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authorFrederic Weisbecker <fweisbec@gmail.com>2009-10-18 01:09:09 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2009-10-18 01:12:33 +0200
commit0f8f86c7bdd1c954fbe153af437a0d91a6c5721a (patch)
tree94a8d419a470a4f9852ca397bb9bbe48db92ff5c /drivers/regulator
parentdca2d6ac09d9ef59ff46820d4f0c94b08a671202 (diff)
parentf39cdf25bf77219676ec5360980ac40b1a7e144a (diff)
Merge commit 'perf/core' into perf/hw-breakpoint
Conflicts: kernel/Makefile kernel/trace/Makefile kernel/trace/trace.h samples/Makefile Merge reason: We need to be uptodate with the perf events development branch because we plan to rewrite the breakpoints API on top of perf events.
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/Kconfig55
-rw-r--r--drivers/regulator/Makefile9
-rw-r--r--drivers/regulator/ab3100.c700
-rw-r--r--drivers/regulator/core.c309
-rw-r--r--drivers/regulator/da903x.c77
-rw-r--r--drivers/regulator/fixed.c91
-rw-r--r--drivers/regulator/lp3971.c2
-rw-r--r--drivers/regulator/mc13783.c410
-rw-r--r--drivers/regulator/pcap-regulator.c318
-rw-r--r--drivers/regulator/pcf50633-regulator.c98
-rw-r--r--drivers/regulator/tps65023-regulator.c632
-rw-r--r--drivers/regulator/tps6507x-regulator.c714
-rw-r--r--drivers/regulator/userspace-consumer.c45
-rw-r--r--drivers/regulator/virtual.c56
-rw-r--r--drivers/regulator/wm831x-dcdc.c862
-rw-r--r--drivers/regulator/wm831x-isink.c260
-rw-r--r--drivers/regulator/wm831x-ldo.c852
-rw-r--r--drivers/regulator/wm8350-regulator.c2
18 files changed, 5330 insertions, 162 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f4317798e47..bcbb161bde0 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1,6 +1,5 @@
menuconfig REGULATOR
bool "Voltage and Current Regulator Support"
- default n
help
Generic Voltage and Current Regulator support.
@@ -30,7 +29,6 @@ config REGULATOR_DEBUG
config REGULATOR_FIXED_VOLTAGE
tristate "Fixed voltage regulator support"
- default n
help
This driver provides support for fixed voltage regulators,
useful for systems which use a combination of software
@@ -38,7 +36,6 @@ config REGULATOR_FIXED_VOLTAGE
config REGULATOR_VIRTUAL_CONSUMER
tristate "Virtual regulator consumer support"
- default n
help
This driver provides a virtual consumer for the voltage and
current regulator API which provides sysfs controls for
@@ -49,17 +46,15 @@ config REGULATOR_VIRTUAL_CONSUMER
config REGULATOR_USERSPACE_CONSUMER
tristate "Userspace regulator consumer support"
- default n
help
There are some classes of devices that are controlled entirely
- from user space. Usersapce consumer driver provides ability to
+ from user space. Userspace consumer driver provides ability to
control power supplies for such devices.
If unsure, say no.
config REGULATOR_BQ24022
tristate "TI bq24022 Dual Input 1-Cell Li-Ion Charger IC"
- default n
help
This driver controls a TI bq24022 Charger attached via
GPIOs. The provided current regulator can enable/disable
@@ -69,7 +64,6 @@ config REGULATOR_BQ24022
config REGULATOR_MAX1586
tristate "Maxim 1586/1587 voltage regulator"
depends on I2C
- default n
help
This driver controls a Maxim 1586 or 1587 voltage output
regulator via I2C bus. The provided regulator is suitable
@@ -82,6 +76,13 @@ config REGULATOR_TWL4030
This driver supports the voltage regulators provided by
this family of companion chips.
+config REGULATOR_WM831X
+ tristate "Wolfson Microelcronics WM831x PMIC regulators"
+ depends on MFD_WM831X
+ help
+ Support the voltage and current regulators of the WM831x series
+ of PMIC devices.
+
config REGULATOR_WM8350
tristate "Wolfson Microelectroncis WM8350 AudioPlus PMIC"
depends on MFD_WM8350
@@ -117,4 +118,44 @@ config REGULATOR_LP3971
Say Y here to support the voltage regulators and convertors
on National Semiconductors LP3971 PMIC
+config REGULATOR_PCAP
+ tristate "PCAP2 regulator driver"
+ depends on EZX_PCAP
+ help
+ This driver provides support for the voltage regulators of the
+ PCAP2 PMIC.
+
+config REGULATOR_MC13783
+ tristate "Support regulators on Freescale MC13783 PMIC"
+ depends on MFD_MC13783
+ help
+ Say y here to support the regulators found on the Freescale MC13783
+ PMIC.
+
+config REGULATOR_AB3100
+ tristate "ST-Ericsson AB3100 Regulator functions"
+ depends on AB3100_CORE
+ default y if AB3100_CORE
+ help
+ These regulators correspond to functionality in the
+ AB3100 analog baseband dealing with power regulators
+ for the system.
+
+config REGULATOR_TPS65023
+ tristate "TI TPS65023 Power regulators"
+ depends on I2C
+ help
+ This driver supports TPS65023 voltage regulator chips. TPS65023 provides
+ three step-down converters and two general-purpose LDO voltage regulators.
+ It supports TI's software based Class-2 SmartReflex implementation.
+
+config REGULATOR_TPS6507X
+ tristate "TI TPS6507X Power regulators"
+ depends on I2C
+ help
+ This driver supports TPS6507X voltage regulator chips. TPS6507X provides
+ three step-down converters and two general-purpose LDO voltage regulators.
+ It supports TI's software based Class-2 SmartReflex implementation.
+
endif
+
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 4d762c4cccf..4257a868377 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -12,9 +12,18 @@ obj-$(CONFIG_REGULATOR_BQ24022) += bq24022.o
obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl4030-regulator.o
+obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
+obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
+obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
+obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
+obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o
+obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
+
+obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
+obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/ab3100.c b/drivers/regulator/ab3100.c
new file mode 100644
index 00000000000..49aeee823a2
--- /dev/null
+++ b/drivers/regulator/ab3100.c
@@ -0,0 +1,700 @@
+/*
+ * drivers/regulator/ab3100.c
+ *
+ * Copyright (C) 2008-2009 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ * Low-level control of the AB3100 IC Low Dropout (LDO)
+ * regulators, external regulator and buck converter
+ * Author: Mattias Wallin <mattias.wallin@stericsson.com>
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/mfd/ab3100.h>
+
+/* LDO registers and some handy masking definitions for AB3100 */
+#define AB3100_LDO_A 0x40
+#define AB3100_LDO_C 0x41
+#define AB3100_LDO_D 0x42
+#define AB3100_LDO_E 0x43
+#define AB3100_LDO_E_SLEEP 0x44
+#define AB3100_LDO_F 0x45
+#define AB3100_LDO_G 0x46
+#define AB3100_LDO_H 0x47
+#define AB3100_LDO_H_SLEEP_MODE 0
+#define AB3100_LDO_H_SLEEP_EN 2
+#define AB3100_LDO_ON 4
+#define AB3100_LDO_H_VSEL_AC 5
+#define AB3100_LDO_K 0x48
+#define AB3100_LDO_EXT 0x49
+#define AB3100_BUCK 0x4A
+#define AB3100_BUCK_SLEEP 0x4B
+#define AB3100_REG_ON_MASK 0x10
+
+/**
+ * struct ab3100_regulator
+ * A struct passed around the individual regulator functions
+ * @platform_device: platform device holding this regulator
+ * @ab3100: handle to the AB3100 parent chip
+ * @plfdata: AB3100 platform data passed in at probe time
+ * @regreg: regulator register number in the AB3100
+ * @fixed_voltage: a fixed voltage for this regulator, if this
+ * 0 the voltages array is used instead.
+ * @typ_voltages: an array of available typical voltages for
+ * this regulator
+ * @voltages_len: length of the array of available voltages
+ */
+struct ab3100_regulator {
+ struct regulator_dev *rdev;
+ struct ab3100 *ab3100;
+ struct ab3100_platform_data *plfdata;
+ u8 regreg;
+ int fixed_voltage;
+ int const *typ_voltages;
+ u8 voltages_len;
+};
+
+/* The order in which registers are initialized */
+static const u8 ab3100_reg_init_order[AB3100_NUM_REGULATORS+2] = {
+ AB3100_LDO_A,
+ AB3100_LDO_C,
+ AB3100_LDO_E,
+ AB3100_LDO_E_SLEEP,
+ AB3100_LDO_F,
+ AB3100_LDO_G,
+ AB3100_LDO_H,
+ AB3100_LDO_K,
+ AB3100_LDO_EXT,
+ AB3100_BUCK,
+ AB3100_BUCK_SLEEP,
+ AB3100_LDO_D,
+};
+
+/* Preset (hardware defined) voltages for these regulators */
+#define LDO_A_VOLTAGE 2750000
+#define LDO_C_VOLTAGE 2650000
+#define LDO_D_VOLTAGE 2650000
+
+static const int const ldo_e_buck_typ_voltages[] = {
+ 1800000,
+ 1400000,
+ 1300000,
+ 1200000,
+ 1100000,
+ 1050000,
+ 900000,
+};
+
+static const int const ldo_f_typ_voltages[] = {
+ 1800000,
+ 1400000,
+ 1300000,
+ 1200000,
+ 1100000,
+ 1050000,
+ 2500000,
+ 2650000,
+};
+
+static const int const ldo_g_typ_voltages[] = {
+ 2850000,
+ 2750000,
+ 1800000,
+ 1500000,
+};
+
+static const int const ldo_h_typ_voltages[] = {
+ 2750000,
+ 1800000,
+ 1500000,
+ 1200000,
+};
+
+static const int const ldo_k_typ_voltages[] = {
+ 2750000,
+ 1800000,
+};
+
+
+/* The regulator devices */
+static struct ab3100_regulator
+ab3100_regulators[AB3100_NUM_REGULATORS] = {
+ {
+ .regreg = AB3100_LDO_A,
+ .fixed_voltage = LDO_A_VOLTAGE,
+ },
+ {
+ .regreg = AB3100_LDO_C,
+ .fixed_voltage = LDO_C_VOLTAGE,
+ },
+ {
+ .regreg = AB3100_LDO_D,
+ .fixed_voltage = LDO_D_VOLTAGE,
+ },
+ {
+ .regreg = AB3100_LDO_E,
+ .typ_voltages = ldo_e_buck_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ },
+ {
+ .regreg = AB3100_LDO_F,
+ .typ_voltages = ldo_f_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_f_typ_voltages),
+ },
+ {
+ .regreg = AB3100_LDO_G,
+ .typ_voltages = ldo_g_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_g_typ_voltages),
+ },
+ {
+ .regreg = AB3100_LDO_H,
+ .typ_voltages = ldo_h_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_h_typ_voltages),
+ },
+ {
+ .regreg = AB3100_LDO_K,
+ .typ_voltages = ldo_k_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_k_typ_voltages),
+ },
+ {
+ .regreg = AB3100_LDO_EXT,
+ /* No voltages for the external regulator */
+ },
+ {
+ .regreg = AB3100_BUCK,
+ .typ_voltages = ldo_e_buck_typ_voltages,
+ .voltages_len = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ },
+};
+
+/*
+ * General functions for enable, disable and is_enabled used for
+ * LDO: A,C,E,F,G,H,K,EXT and BUCK
+ */
+static int ab3100_enable_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ int err;
+ u8 regval;
+
+ err = ab3100_get_register_interruptible(abreg->ab3100, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_warn(&reg->dev, "failed to get regid %d value\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The regulator is already on, no reason to go further */
+ if (regval & AB3100_REG_ON_MASK)
+ return 0;
+
+ regval |= AB3100_REG_ON_MASK;
+
+ err = ab3100_set_register_interruptible(abreg->ab3100, abreg->regreg,
+ regval);
+ if (err) {
+ dev_warn(&reg->dev, "failed to set regid %d value\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* Per-regulator power on delay from spec */
+ switch (abreg->regreg) {
+ case AB3100_LDO_A: /* Fallthrough */
+ case AB3100_LDO_C: /* Fallthrough */
+ case AB3100_LDO_D: /* Fallthrough */
+ case AB3100_LDO_E: /* Fallthrough */
+ case AB3100_LDO_H: /* Fallthrough */
+ case AB3100_LDO_K:
+ udelay(200);
+ break;
+ case AB3100_LDO_F:
+ udelay(600);
+ break;
+ case AB3100_LDO_G:
+ udelay(400);
+ break;
+ case AB3100_BUCK:
+ mdelay(1);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int ab3100_disable_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ int err;
+ u8 regval;
+
+ /*
+ * LDO D is a special regulator. When it is disabled, the entire
+ * system is shut down. So this is handled specially.
+ */
+ if (abreg->regreg == AB3100_LDO_D) {
+ int i;
+
+ dev_info(&reg->dev, "disabling LDO D - shut down system\n");
+ /*
+ * Set regulators to default values, ignore any errors,
+ * we're going DOWN
+ */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ (void) ab3100_set_register_interruptible(abreg->ab3100,
+ ab3100_reg_init_order[i],
+ abreg->plfdata->reg_initvals[i]);
+ }
+
+ /* Setting LDO D to 0x00 cuts the power to the SoC */
+ return ab3100_set_register_interruptible(abreg->ab3100,
+ AB3100_LDO_D, 0x00U);
+
+ }
+
+ /*
+ * All other regulators are handled here
+ */
+ err = ab3100_get_register_interruptible(abreg->ab3100, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_err(&reg->dev, "unable to get register 0x%x\n",
+ abreg->regreg);
+ return err;
+ }
+ regval &= ~AB3100_REG_ON_MASK;
+ return ab3100_set_register_interruptible(abreg->ab3100, abreg->regreg,
+ regval);
+}
+
+static int ab3100_is_enabled_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ u8 regval;
+ int err;
+
+ err = ab3100_get_register_interruptible(abreg->ab3100, abreg->regreg,
+ &regval);
+ if (err) {
+ dev_err(&reg->dev, "unable to get register 0x%x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ return regval & AB3100_REG_ON_MASK;
+}
+
+static int ab3100_list_voltage_regulator(struct regulator_dev *reg,
+ unsigned selector)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+
+ if (selector > abreg->voltages_len)
+ return -EINVAL;
+ return abreg->typ_voltages[selector];
+}
+
+static int ab3100_get_voltage_regulator(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ u8 regval;
+ int err;
+
+ /* Return the voltage for fixed regulators immediately */
+ if (abreg->fixed_voltage)
+ return abreg->fixed_voltage;
+
+ /*
+ * For variable types, read out setting and index into
+ * supplied voltage list.
+ */
+ err = ab3100_get_register_interruptible(abreg->ab3100,
+ abreg->regreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator value in register %02x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The 3 highest bits index voltages */
+ regval &= 0xE0;
+ regval >>= 5;
+
+ if (regval > abreg->voltages_len) {
+ dev_err(&reg->dev,
+ "regulator register %02x contains an illegal voltage setting\n",
+ abreg->regreg);
+ return -EINVAL;
+ }
+
+ return abreg->typ_voltages[regval];
+}
+
+static int ab3100_get_best_voltage_index(struct regulator_dev *reg,
+ int min_uV, int max_uV)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ int i;
+ int bestmatch;
+ int bestindex;
+
+ /*
+ * Locate the minimum voltage fitting the criteria on
+ * this regulator. The switchable voltages are not
+ * in strict falling order so we need to check them
+ * all for the best match.
+ */
+ bestmatch = INT_MAX;
+ bestindex = -1;
+ for (i = 0; i < abreg->voltages_len; i++) {
+ if (abreg->typ_voltages[i] <= max_uV &&
+ abreg->typ_voltages[i] >= min_uV &&
+ abreg->typ_voltages[i] < bestmatch) {
+ bestmatch = abreg->typ_voltages[i];
+ bestindex = i;
+ }
+ }
+
+ if (bestindex < 0) {
+ dev_warn(&reg->dev, "requested %d<=x<=%d uV, out of range!\n",
+ min_uV, max_uV);
+ return -EINVAL;
+ }
+ return bestindex;
+}
+
+static int ab3100_set_voltage_regulator(struct regulator_dev *reg,
+ int min_uV, int max_uV)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ u8 regval;
+ int err;
+ int bestindex;
+
+ bestindex = ab3100_get_best_voltage_index(reg, min_uV, max_uV);
+ if (bestindex < 0)
+ return bestindex;
+
+ err = ab3100_get_register_interruptible(abreg->ab3100,
+ abreg->regreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator register %02x\n",
+ abreg->regreg);
+ return err;
+ }
+
+ /* The highest three bits control the variable regulators */
+ regval &= ~0xE0;
+ regval |= (bestindex << 5);
+
+ err = ab3100_set_register_interruptible(abreg->ab3100,
+ abreg->regreg, regval);
+ if (err)
+ dev_warn(&reg->dev, "failed to set regulator register %02x\n",
+ abreg->regreg);
+
+ return err;
+}
+
+static int ab3100_set_suspend_voltage_regulator(struct regulator_dev *reg,
+ int uV)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+ u8 regval;
+ int err;
+ int bestindex;
+ u8 targetreg;
+
+ if (abreg->regreg == AB3100_LDO_E)
+ targetreg = AB3100_LDO_E_SLEEP;
+ else if (abreg->regreg == AB3100_BUCK)
+ targetreg = AB3100_BUCK_SLEEP;
+ else
+ return -EINVAL;
+
+ /* LDO E and BUCK have special suspend voltages you can set */
+ bestindex = ab3100_get_best_voltage_index(reg, uV, uV);
+
+ err = ab3100_get_register_interruptible(abreg->ab3100,
+ targetreg, &regval);
+ if (err) {
+ dev_warn(&reg->dev,
+ "failed to get regulator register %02x\n",
+ targetreg);
+ return err;
+ }
+
+ /* The highest three bits control the variable regulators */
+ regval &= ~0xE0;
+ regval |= (bestindex << 5);
+
+ err = ab3100_set_register_interruptible(abreg->ab3100,
+ targetreg, regval);
+ if (err)
+ dev_warn(&reg->dev, "failed to set regulator register %02x\n",
+ abreg->regreg);
+
+ return err;
+}
+
+/*
+ * The external regulator can just define a fixed voltage.
+ */
+static int ab3100_get_voltage_regulator_external(struct regulator_dev *reg)
+{
+ struct ab3100_regulator *abreg = reg->reg_data;
+
+ return abreg->plfdata->external_voltage;
+}
+
+static struct regulator_ops regulator_ops_fixed = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator,
+};
+
+static struct regulator_ops regulator_ops_variable = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator,
+ .set_voltage = ab3100_set_voltage_regulator,
+ .list_voltage = ab3100_list_voltage_regulator,
+};
+
+static struct regulator_ops regulator_ops_variable_sleepable = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator,
+ .set_voltage = ab3100_set_voltage_regulator,
+ .set_suspend_voltage = ab3100_set_suspend_voltage_regulator,
+ .list_voltage = ab3100_list_voltage_regulator,
+};
+
+/*
+ * LDO EXT is an external regulator so it is really
+ * not possible to set any voltage locally here, AB3100
+ * is an on/off switch plain an simple. The external
+ * voltage is defined in the board set-up if any.
+ */
+static struct regulator_ops regulator_ops_external = {
+ .enable = ab3100_enable_regulator,
+ .disable = ab3100_disable_regulator,
+ .is_enabled = ab3100_is_enabled_regulator,
+ .get_voltage = ab3100_get_voltage_regulator_external,
+};
+
+static struct regulator_desc
+ab3100_regulator_desc[AB3100_NUM_REGULATORS] = {
+ {
+ .name = "LDO_A",
+ .id = AB3100_LDO_A,
+ .ops = &regulator_ops_fixed,
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_C",
+ .id = AB3100_LDO_C,
+ .ops = &regulator_ops_fixed,
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_D",
+ .id = AB3100_LDO_D,
+ .ops = &regulator_ops_fixed,
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_E",
+ .id = AB3100_LDO_E,
+ .ops = &regulator_ops_variable_sleepable,
+ .n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_F",
+ .id = AB3100_LDO_F,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_f_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_G",
+ .id = AB3100_LDO_G,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_g_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_H",
+ .id = AB3100_LDO_H,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_h_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_K",
+ .id = AB3100_LDO_K,
+ .ops = &regulator_ops_variable,
+ .n_voltages = ARRAY_SIZE(ldo_k_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "LDO_EXT",
+ .id = AB3100_LDO_EXT,
+ .ops = &regulator_ops_external,
+ .type = REGULATOR_VOLTAGE,
+ },
+ {
+ .name = "BUCK",
+ .id = AB3100_BUCK,
+ .ops = &regulator_ops_variable_sleepable,
+ .n_voltages = ARRAY_SIZE(ldo_e_buck_typ_voltages),
+ .type = REGULATOR_VOLTAGE,
+ },
+};
+
+/*
+ * NOTE: the following functions are regulators pluralis - it is the
+ * binding to the AB3100 core driver and the parent platform device
+ * for all the different regulators.
+ */
+
+static int __init ab3100_regulators_probe(struct platform_device *pdev)
+{
+ struct ab3100_platform_data *plfdata = pdev->dev.platform_data;
+ struct ab3100 *ab3100 = platform_get_drvdata(pdev);
+ int err = 0;
+ u8 data;
+ int i;
+
+ /* Check chip state */
+ err = ab3100_get_register_interruptible(ab3100,
+ AB3100_LDO_D, &data);
+ if (err) {
+ dev_err(&pdev->dev, "could not read initial status of LDO_D\n");
+ return err;
+ }
+ if (data & 0x10)
+ dev_notice(&pdev->dev,
+ "chip is already in active mode (Warm start)\n");
+ else
+ dev_notice(&pdev->dev,
+ "chip is in inactive mode (Cold start)\n");
+
+ /* Set up regulators */
+ for (i = 0; i < ARRAY_SIZE(ab3100_reg_init_order); i++) {
+ err = ab3100_set_register_interruptible(ab3100,
+ ab3100_reg_init_order[i],
+ plfdata->reg_initvals[i]);
+ if (err) {
+ dev_err(&pdev->dev, "regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+ }
+
+ if (err) {
+ dev_err(&pdev->dev,
+ "LDO D regulator initialization failed with error %d\n",
+ err);
+ return err;
+ }
+
+ /* Register the regulators */
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ struct ab3100_regulator *reg = &ab3100_regulators[i];
+ struct regulator_dev *rdev;
+
+ /*
+ * Initialize per-regulator struct.
+ * Inherit platform data, this comes down from the
+ * i2c boarddata, from the machine. So if you want to
+ * see what it looks like for a certain machine, go
+ * into the machine I2C setup.
+ */
+ reg->ab3100 = ab3100;
+ reg->plfdata = plfdata;
+
+ /*
+ * Register the regulator, pass around
+ * the ab3100_regulator struct
+ */
+ rdev = regulator_register(&ab3100_regulator_desc[i],
+ &pdev->dev,
+ &plfdata->reg_constraints[i],
+ reg);
+
+ if (IS_ERR(rdev)) {
+ err = PTR_ERR(rdev);
+ dev_err(&pdev->dev,
+ "%s: failed to register regulator %s err %d\n",
+ __func__, ab3100_regulator_desc[i].name,
+ err);
+ i--;
+ /* remove the already registered regulators */
+ while (i > 0) {
+ regulator_unregister(ab3100_regulators[i].rdev);
+ i--;
+ }
+ return err;
+ }
+
+ /* Then set a pointer back to the registered regulator */
+ reg->rdev = rdev;
+ }
+
+ return 0;
+}
+
+static int __exit ab3100_regulators_remove(struct platform_device *pdev)
+{
+ int i;
+
+ for (i = 0; i < AB3100_NUM_REGULATORS; i++) {
+ struct ab3100_regulator *reg = &ab3100_regulators[i];
+
+ regulator_unregister(reg->rdev);
+ }
+ return 0;
+}
+
+static struct platform_driver ab3100_regulators_driver = {
+ .driver = {
+ .name = "ab3100-regulators",
+ .owner = THIS_MODULE,
+ },
+ .probe = ab3100_regulators_probe,
+ .remove = __exit_p(ab3100_regulators_remove),
+};
+
+static __init int ab3100_regulators_init(void)
+{
+ return platform_driver_register(&ab3100_regulators_driver);
+}
+
+static __exit void ab3100_regulators_exit(void)
+{
+ platform_driver_register(&ab3100_regulators_driver);
+}
+
+subsys_initcall(ab3100_regulators_init);
+module_exit(ab3100_regulators_exit);
+
+MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
+MODULE_DESCRIPTION("AB3100 Regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:ab3100-regulators");
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 98c3a74e994..744ea1d0b59 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -37,7 +37,7 @@ static int has_full_constraints;
*/
struct regulator_map {
struct list_head list;
- struct device *dev;
+ const char *dev_name; /* The dev_name() for the consumer */
const char *supply;
struct regulator_dev *regulator;
};
@@ -232,7 +232,7 @@ static ssize_t regulator_name_show(struct device *dev,
struct regulator_dev *rdev = dev_get_drvdata(dev);
const char *name;
- if (rdev->constraints->name)
+ if (rdev->constraints && rdev->constraints->name)
name = rdev->constraints->name;
else if (rdev->desc->name)
name = rdev->desc->name;
@@ -280,8 +280,13 @@ static ssize_t regulator_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct regulator_dev *rdev = dev_get_drvdata(dev);
+ ssize_t ret;
+
+ mutex_lock(&rdev->mutex);
+ ret = regulator_print_state(buf, _regulator_is_enabled(rdev));
+ mutex_unlock(&rdev->mutex);
- return regulator_print_state(buf, _regulator_is_enabled(rdev));
+ return ret;
}
static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
@@ -857,23 +862,39 @@ out:
* set_consumer_device_supply: Bind a regulator to a symbolic supply
* @rdev: regulator source
* @consumer_dev: device the supply applies to
+ * @consumer_dev_name: dev_name() string for device supply applies to
* @supply: symbolic name for supply
*
* Allows platform initialisation code to map physical regulator
* sources to symbolic names for supplies for use by devices. Devices
* should use these symbolic names to request regulators, avoiding the
* need to provide board-specific regulator names as platform data.
+ *
+ * Only one of consumer_dev and consumer_dev_name may be specified.
*/
static int set_consumer_device_supply(struct regulator_dev *rdev,
- struct device *consumer_dev, const char *supply)
+ struct device *consumer_dev, const char *consumer_dev_name,
+ const char *supply)
{
struct regulator_map *node;
+ int has_dev;
+
+ if (consumer_dev && consumer_dev_name)
+ return -EINVAL;
+
+ if (!consumer_dev_name && consumer_dev)
+ consumer_dev_name = dev_name(consumer_dev);
if (supply == NULL)
return -EINVAL;
+ if (consumer_dev_name != NULL)
+ has_dev = 1;
+ else
+ has_dev = 0;
+
list_for_each_entry(node, &regulator_map_list, list) {
- if (consumer_dev != node->dev)
+ if (consumer_dev_name != node->dev_name)
continue;
if (strcmp(node->supply, supply) != 0)
continue;
@@ -886,30 +907,45 @@ static int set_consumer_device_supply(struct regulator_dev *rdev,
return -EBUSY;
}
- node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL);
+ node = kzalloc(sizeof(struct regulator_map), GFP_KERNEL);
if (node == NULL)
return -ENOMEM;
node->regulator = rdev;
- node->dev = consumer_dev;
node->supply = supply;
+ if (has_dev) {
+ node->dev_name = kstrdup(consumer_dev_name, GFP_KERNEL);
+ if (node->dev_name == NULL) {
+ kfree(node);
+ return -ENOMEM;
+ }
+ }
+
list_add(&node->list, &regulator_map_list);
return 0;
}
static void unset_consumer_device_supply(struct regulator_dev *rdev,
- struct device *consumer_dev)
+ const char *consumer_dev_name, struct device *consumer_dev)
{
struct regulator_map *node, *n;
+ if (consumer_dev && !consumer_dev_name)
+ consumer_dev_name = dev_name(consumer_dev);
+
list_for_each_entry_safe(node, n, &regulator_map_list, list) {
- if (rdev == node->regulator &&
- consumer_dev == node->dev) {
- list_del(&node->list);
- kfree(node);
- return;
- }
+ if (rdev != node->regulator)
+ continue;
+
+ if (consumer_dev_name && node->dev_name &&
+ strcmp(consumer_dev_name, node->dev_name))
+ continue;
+
+ list_del(&node->list);
+ kfree(node->dev_name);
+ kfree(node);
+ return;
}
}
@@ -920,6 +956,7 @@ static void unset_regulator_supplies(struct regulator_dev *rdev)
list_for_each_entry_safe(node, n, &regulator_map_list, list) {
if (rdev == node->regulator) {
list_del(&node->list);
+ kfree(node->dev_name);
kfree(node);
return;
}
@@ -1001,35 +1038,33 @@ overflow_err:
return NULL;
}
-/**
- * regulator_get - lookup and obtain a reference to a regulator.
- * @dev: device for regulator "consumer"
- * @id: Supply name or regulator ID.
- *
- * Returns a struct regulator corresponding to the regulator producer,
- * or IS_ERR() condition containing errno.
- *
- * Use of supply names configured via regulator_set_device_supply() is
- * strongly encouraged. It is recommended that the supply name used
- * should match the name used for the supply and/or the relevant
- * device pins in the datasheet.
- */
-struct regulator *regulator_get(struct device *dev, const char *id)
+/* Internal regulator request function */
+static struct regulator *_regulator_get(struct device *dev, const char *id,
+ int exclusive)
{
struct regulator_dev *rdev;
struct regulator_map *map;
struct regulator *regulator = ERR_PTR(-ENODEV);
+ const char *devname = NULL;
+ int ret;
if (id == NULL) {
printk(KERN_ERR "regulator: get() with no identifier\n");
return regulator;
}
+ if (dev)
+ devname = dev_name(dev);
+
mutex_lock(&regulator_list_mutex);
list_for_each_entry(map, &regulator_map_list, list) {
- if (dev == map->dev &&
- strcmp(map->supply, id) == 0) {
+ /* If the mapping has a device set up it must match */
+ if (map->dev_name &&
+ (!devname || strcmp(map->dev_name, devname)))
+ continue;
+
+ if (strcmp(map->supply, id) == 0) {
rdev = map->regulator;
goto found;
}
@@ -1038,6 +1073,16 @@ struct regulator *regulator_get(struct device *dev, const char *id)
return regulator;
found:
+ if (rdev->exclusive) {
+ regulator = ERR_PTR(-EPERM);
+ goto out;
+ }
+
+ if (exclusive && rdev->open_count) {
+ regulator = ERR_PTR(-EBUSY);
+ goto out;
+ }
+
if (!try_module_get(rdev->owner))
goto out;
@@ -1047,13 +1092,70 @@ found:
module_put(rdev->owner);
}
+ rdev->open_count++;
+ if (exclusive) {
+ rdev->exclusive = 1;
+
+ ret = _regulator_is_enabled(rdev);
+ if (ret > 0)
+ rdev->use_count = 1;
+ else
+ rdev->use_count = 0;
+ }
+
out:
mutex_unlock(&regulator_list_mutex);
+
return regulator;
}
+
+/**
+ * regulator_get - lookup and obtain a reference to a regulator.
+ * @dev: device for regulator "consumer"
+ * @id: Supply name or regulator ID.
+ *
+ * Returns a struct regulator corresponding to the regulator producer,
+ * or IS_ERR() condition containing errno.
+ *
+ * Use of supply names configured via regulator_set_device_supply() is
+ * strongly encouraged. It is recommended that the supply name used
+ * should match the name used for the supply and/or the relevant
+ * device pins in the datasheet.
+ */
+struct regulator *regulator_get(struct device *dev, const char *id)
+{
+ return _regulator_get(dev, id, 0);
+}
EXPORT_SYMBOL_GPL(regulator_get);
/**
+ * regulator_get_exclusive - obtain exclusive access to a regulator.
+ * @dev: device for regulator "consumer"
+ * @id: Supply name or regulator ID.
+ *
+ * Returns a struct regulator corresponding to the regulator producer,
+ * or IS_ERR() condition containing errno. Other consumers will be
+ * unable to obtain this reference is held and the use count for the
+ * regulator will be initialised to reflect the current state of the
+ * regulator.
+ *
+ * This is intended for use by consumers which cannot tolerate shared
+ * use of the regulator such as those which need to force the
+ * regulator off for correct operation of the hardware they are
+ * controlling.
+ *
+ * Use of supply names configured via regulator_set_device_supply() is
+ * strongly encouraged. It is recommended that the supply name used
+ * should match the name used for the supply and/or the relevant
+ * device pins in the datasheet.
+ */
+struct regulator *regulator_get_exclusive(struct device *dev, const char *id)
+{
+ return _regulator_get(dev, id, 1);
+}
+EXPORT_SYMBOL_GPL(regulator_get_exclusive);
+
+/**
* regulator_put - "free" the regulator source
* @regulator: regulator source
*
@@ -1081,21 +1183,29 @@ void regulator_put(struct regulator *regulator)
list_del(&regulator->list);
kfree(regulator);
+ rdev->open_count--;
+ rdev->exclusive = 0;
+
module_put(rdev->owner);
mutex_unlock(&regulator_list_mutex);
}
EXPORT_SYMBOL_GPL(regulator_put);
+static int _regulator_can_change_status(struct regulator_dev *rdev)
+{
+ if (!rdev->constraints)
+ return 0;
+
+ if (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_STATUS)
+ return 1;
+ else
+ return 0;
+}
+
/* locks held by regulator_enable() */
static int _regulator_enable(struct regulator_dev *rdev)
{
- int ret = -EINVAL;
-
- if (!rdev->constraints) {
- printk(KERN_ERR "%s: %s has no constraints\n",
- __func__, rdev->desc->name);
- return ret;
- }
+ int ret;
/* do we need to enable the supply regulator first */
if (rdev->supply) {
@@ -1108,24 +1218,35 @@ static int _regulator_enable(struct regulator_dev *rdev)
}
/* check voltage and requested load before enabling */
- if (rdev->desc->ops->enable) {
-
- if (rdev->constraints &&
- (rdev->constraints->valid_ops_mask &
- REGULATOR_CHANGE_DRMS))
- drms_uA_update(rdev);
-
- ret = rdev->desc->ops->enable(rdev);
- if (ret < 0) {
- printk(KERN_ERR "%s: failed to enable %s: %d\n",
+ if (rdev->constraints &&
+ (rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS))
+ drms_uA_update(rdev);
+
+ if (rdev->use_count == 0) {
+ /* The regulator may on if it's not switchable or left on */
+ ret = _regulator_is_enabled(rdev);
+ if (ret == -EINVAL || ret == 0) {
+ if (!_regulator_can_change_status(rdev))
+ return -EPERM;
+
+ if (rdev->desc->ops->enable) {
+ ret = rdev->desc->ops->enable(rdev);
+ if (ret < 0)
+ return ret;
+ } else {
+ return -EINVAL;
+ }
+ } else if (ret < 0) {
+ printk(KERN_ERR "%s: is_enabled() failed for %s: %d\n",
__func__, rdev->desc->name, ret);
return ret;
}
- rdev->use_count++;
- return ret;
+ /* Fallthrough on positive return values - already enabled */
}
- return ret;
+ rdev->use_count++;
+
+ return 0;
}
/**
@@ -1165,7 +1286,8 @@ static int _regulator_disable(struct regulator_dev *rdev)
if (rdev->use_count == 1 && !rdev->constraints->always_on) {
/* we are last user */
- if (rdev->desc->ops->disable) {
+ if (_regulator_can_change_status(rdev) &&
+ rdev->desc->ops->disable) {
ret = rdev->desc->ops->disable(rdev);
if (ret < 0) {
printk(KERN_ERR "%s: failed to disable %s\n",
@@ -1265,20 +1387,11 @@ EXPORT_SYMBOL_GPL(regulator_force_disable);
static int _regulator_is_enabled(struct regulator_dev *rdev)
{
- int ret;
-
- mutex_lock(&rdev->mutex);
-
/* sanity check */
- if (!rdev->desc->ops->is_enabled) {
- ret = -EINVAL;
- goto out;
- }
+ if (!rdev->desc->ops->is_enabled)
+ return -EINVAL;
- ret = rdev->desc->ops->is_enabled(rdev);
-out:
- mutex_unlock(&rdev->mutex);
- return ret;
+ return rdev->desc->ops->is_enabled(rdev);
}
/**
@@ -1295,7 +1408,13 @@ out:
*/
int regulator_is_enabled(struct regulator *regulator)
{
- return _regulator_is_enabled(regulator->rdev);
+ int ret;
+
+ mutex_lock(&regulator->rdev->mutex);
+ ret = _regulator_is_enabled(regulator->rdev);
+ mutex_unlock(&regulator->rdev->mutex);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(regulator_is_enabled);
@@ -1350,6 +1469,35 @@ int regulator_list_voltage(struct regulator *regulator, unsigned selector)
EXPORT_SYMBOL_GPL(regulator_list_voltage);
/**
+ * regulator_is_supported_voltage - check if a voltage range can be supported
+ *
+ * @regulator: Regulator to check.
+ * @min_uV: Minimum required voltage in uV.
+ * @max_uV: Maximum required voltage in uV.
+ *
+ * Returns a boolean or a negative error code.
+ */
+int regulator_is_supported_voltage(struct regulator *regulator,
+ int min_uV, int max_uV)
+{
+ int i, voltages, ret;
+
+ ret = regulator_count_voltages(regulator);
+ if (ret < 0)
+ return ret;
+ voltages = ret;
+
+ for (i = 0; i < voltages; i++) {
+ ret = regulator_list_voltage(regulator, i);
+
+ if (ret >= min_uV && ret <= max_uV)
+ return 1;
+ }
+
+ return 0;
+}
+
+/**
* regulator_set_voltage - set regulator output voltage
* @regulator: regulator source
* @min_uV: Minimum required voltage in uV
@@ -1864,6 +2012,30 @@ int regulator_notifier_call_chain(struct regulator_dev *rdev,
}
EXPORT_SYMBOL_GPL(regulator_notifier_call_chain);
+/**
+ * regulator_mode_to_status - convert a regulator mode into a status
+ *
+ * @mode: Mode to convert
+ *
+ * Convert a regulator mode into a status.
+ */
+int regulator_mode_to_status(unsigned int mode)
+{
+ switch (mode) {
+ case REGULATOR_MODE_FAST:
+ return REGULATOR_STATUS_FAST;
+ case REGULATOR_MODE_NORMAL:
+ return REGULATOR_STATUS_NORMAL;
+ case REGULATOR_MODE_IDLE:
+ return REGULATOR_STATUS_IDLE;
+ case REGULATOR_STATUS_STANDBY:
+ return REGULATOR_STATUS_STANDBY;
+ default:
+ return 0;
+ }
+}
+EXPORT_SYMBOL_GPL(regulator_mode_to_status);
+
/*
* To avoid cluttering sysfs (and memory) with useless state, only
* create attributes that can be meaningfully displayed.
@@ -2067,11 +2239,13 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
for (i = 0; i < init_data->num_consumer_supplies; i++) {
ret = set_consumer_device_supply(rdev,
init_data->consumer_supplies[i].dev,
+ init_data->consumer_supplies[i].dev_name,
init_data->consumer_supplies[i].supply);
if (ret < 0) {
for (--i; i >= 0; i--)
unset_consumer_device_supply(rdev,
- init_data->consumer_supplies[i].dev);
+ init_data->consumer_supplies[i].dev_name,
+ init_data->consumer_supplies[i].dev);
goto scrub;
}
}
@@ -2106,6 +2280,7 @@ void regulator_unregister(struct regulator_dev *rdev)
return;
mutex_lock(&regulator_list_mutex);
+ WARN_ON(rdev->open_count);
unset_regulator_supplies(rdev);
list_del(&rdev->list);
if (rdev->supply)
@@ -2253,14 +2428,14 @@ static int __init regulator_init_complete(void)
ops = rdev->desc->ops;
c = rdev->constraints;
- if (c->name)
+ if (c && c->name)
name = c->name;
else if (rdev->desc->name)
name = rdev->desc->name;
else
name = "regulator";
- if (!ops->disable || c->always_on)
+ if (!ops->disable || (c && c->always_on))
continue;
mutex_lock(&rdev->mutex);
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index b8b89ef10a8..aa224d936e0 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -64,6 +64,14 @@
#define DA9034_MDTV2 (0x33)
#define DA9034_MVRC (0x34)
+/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */
+#define DA9035_OVER3 (0x12)
+#define DA9035_VCC2 (0x1f)
+#define DA9035_3DTV1 (0x2c)
+#define DA9035_3DTV2 (0x2d)
+#define DA9035_3VRC (0x2e)
+#define DA9035_AUTOSKIP (0x2f)
+
struct da903x_regulator_info {
struct regulator_desc desc;
@@ -79,6 +87,10 @@ struct da903x_regulator_info {
int enable_bit;
};
+static int da9034_ldo12_data[] = { 1700, 1750, 1800, 1850, 1900, 1950,
+ 2000, 2050, 2700, 2750, 2800, 2850,
+ 2900, 2950, 3000, 3050 };
+
static inline struct device *to_da903x_dev(struct regulator_dev *rdev)
{
return rdev_get_dev(rdev)->parent->parent;
@@ -162,6 +174,17 @@ static int da903x_is_enabled(struct regulator_dev *rdev)
return !!(reg_val & (1 << info->enable_bit));
}
+static int da903x_list_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+ struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
+ int ret;
+
+ ret = info->min_uV + info->step_uV * selector;
+ if (ret > info->max_uV)
+ return -EINVAL;
+ return ret;
+}
+
/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
@@ -278,7 +301,7 @@ static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
- val = (val > 7 || val < 20) ? 8 : val - 12;
+ val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
@@ -305,9 +328,18 @@ static int da9034_get_ldo12_voltage(struct regulator_dev *rdev)
return info->min_uV + info->step_uV * val;
}
+static int da9034_list_ldo12_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector > ARRAY_SIZE(da9034_ldo12_data))
+ return -EINVAL;
+ return da9034_ldo12_data[selector] * 1000;
+}
+
static struct regulator_ops da903x_regulator_ldo_ops = {
.set_voltage = da903x_set_ldo_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -317,6 +349,7 @@ static struct regulator_ops da903x_regulator_ldo_ops = {
static struct regulator_ops da9030_regulator_ldo14_ops = {
.set_voltage = da9030_set_ldo14_voltage,
.get_voltage = da9030_get_ldo14_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -326,6 +359,7 @@ static struct regulator_ops da9030_regulator_ldo14_ops = {
static struct regulator_ops da9030_regulator_ldo1_15_ops = {
.set_voltage = da9030_set_ldo1_15_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -334,6 +368,7 @@ static struct regulator_ops da9030_regulator_ldo1_15_ops = {
static struct regulator_ops da9034_regulator_dvc_ops = {
.set_voltage = da9034_set_dvc_voltage,
.get_voltage = da903x_get_voltage,
+ .list_voltage = da903x_list_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -343,6 +378,7 @@ static struct regulator_ops da9034_regulator_dvc_ops = {
static struct regulator_ops da9034_regulator_ldo12_ops = {
.set_voltage = da9034_set_ldo12_voltage,
.get_voltage = da9034_get_ldo12_voltage,
+ .list_voltage = da9034_list_ldo12_voltage,
.enable = da903x_enable,
.disable = da903x_disable,
.is_enabled = da903x_is_enabled,
@@ -355,6 +391,7 @@ static struct regulator_ops da9034_regulator_ldo12_ops = {
.ops = &da903x_regulator_ldo_ops, \
.type = REGULATOR_VOLTAGE, \
.id = _pmic##_ID_LDO##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
@@ -367,24 +404,25 @@ static struct regulator_ops da9034_regulator_ldo12_ops = {
.enable_bit = (ebit), \
}
-#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
{ \
.desc = { \
.name = #_id, \
.ops = &da9034_regulator_dvc_ops, \
.type = REGULATOR_VOLTAGE, \
- .id = DA9034_ID_##_id, \
+ .id = _pmic##_ID_##_id, \
+ .n_voltages = (step) ? ((max - min) / step + 1) : 1, \
.owner = THIS_MODULE, \
}, \
.min_uV = (min) * 1000, \
.max_uV = (max) * 1000, \
.step_uV = (step) * 1000, \
- .vol_reg = DA9034_##vreg, \
+ .vol_reg = _pmic##_##vreg, \
.vol_shift = (0), \
.vol_nbits = (nbits), \
- .update_reg = DA9034_##ureg, \
+ .update_reg = _pmic##_##ureg, \
.update_bit = (ubit), \
- .enable_reg = DA9034_##ereg, \
+ .enable_reg = _pmic##_##ereg, \
.enable_bit = (ebit), \
}
@@ -394,8 +432,22 @@ static struct regulator_ops da9034_regulator_ldo12_ops = {
#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \
DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit)
+#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
+#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
+#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \
+ DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \
+ ereg, ebit)
+
static struct da903x_regulator_info da903x_regulator_info[] = {
/* DA9030 */
+ DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0),
+
DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1),
DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2),
DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3),
@@ -417,9 +469,9 @@ static struct da903x_regulator_info da903x_regulator_info[] = {
DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */
/* DA9034 */
- DA9034_DVC(BUCK1, 725, 1500, 25, ADTV1, 5, VCC1, 0, OVER1, 0),
- DA9034_DVC(BUCK2, 725, 1500, 25, CDTV1, 5, VCC1, 2, OVER1, 1),
- DA9034_DVC(LDO2, 725, 1500, 25, SDTV1, 5, VCC1, 4, OVER1, 2),
+ DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0),
+ DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1),
+ DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2),
DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4),
DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5),
@@ -435,6 +487,9 @@ static struct da903x_regulator_info da903x_regulator_info[] = {
DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0),
DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1),
DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */
+
+ /* DA9035 */
+ DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3),
};
static inline struct da903x_regulator_info *find_regulator_info(int id)
@@ -462,8 +517,10 @@ static int __devinit da903x_regulator_probe(struct platform_device *pdev)
}
/* Workaround for the weird LDO12 voltage setting */
- if (ri->desc.id == DA9034_ID_LDO12)
+ if (ri->desc.id == DA9034_ID_LDO12) {
ri->desc.ops = &da9034_regulator_ldo12_ops;
+ ri->desc.n_voltages = ARRAY_SIZE(da9034_ldo12_data);
+ }
if (ri->desc.id == DA9030_ID_LDO14)
ri->desc.ops = &da9030_regulator_ldo14_ops;
diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
index cdc674fb46c..f8b295700d7 100644
--- a/drivers/regulator/fixed.c
+++ b/drivers/regulator/fixed.c
@@ -5,6 +5,9 @@
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
+ * Copyright (c) 2009 Nokia Corporation
+ * Roger Quadros <ext-roger.quadros@nokia.com>
+ *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
@@ -20,20 +23,45 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/fixed.h>
+#include <linux/gpio.h>
struct fixed_voltage_data {
struct regulator_desc desc;
struct regulator_dev *dev;
int microvolts;
+ int gpio;
+ unsigned enable_high:1;
+ unsigned is_enabled:1;
};
static int fixed_voltage_is_enabled(struct regulator_dev *dev)
{
- return 1;
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ return data->is_enabled;
}
static int fixed_voltage_enable(struct regulator_dev *dev)
{
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ if (gpio_is_valid(data->gpio)) {
+ gpio_set_value_cansleep(data->gpio, data->enable_high);
+ data->is_enabled = 1;
+ }
+
+ return 0;
+}
+
+static int fixed_voltage_disable(struct regulator_dev *dev)
+{
+ struct fixed_voltage_data *data = rdev_get_drvdata(dev);
+
+ if (gpio_is_valid(data->gpio)) {
+ gpio_set_value_cansleep(data->gpio, !data->enable_high);
+ data->is_enabled = 0;
+ }
+
return 0;
}
@@ -58,6 +86,7 @@ static int fixed_voltage_list_voltage(struct regulator_dev *dev,
static struct regulator_ops fixed_voltage_ops = {
.is_enabled = fixed_voltage_is_enabled,
.enable = fixed_voltage_enable,
+ .disable = fixed_voltage_disable,
.get_voltage = fixed_voltage_get_voltage,
.list_voltage = fixed_voltage_list_voltage,
};
@@ -70,12 +99,14 @@ static int regulator_fixed_voltage_probe(struct platform_device *pdev)
drvdata = kzalloc(sizeof(struct fixed_voltage_data), GFP_KERNEL);
if (drvdata == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate device data\n");
ret = -ENOMEM;
goto err;
}
drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
if (drvdata->desc.name == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate supply name\n");
ret = -ENOMEM;
goto err;
}
@@ -85,12 +116,62 @@ static int regulator_fixed_voltage_probe(struct platform_device *pdev)
drvdata->desc.n_voltages = 1;
drvdata->microvolts = config->microvolts;
+ drvdata->gpio = config->gpio;
+
+ if (gpio_is_valid(config->gpio)) {
+ drvdata->enable_high = config->enable_high;
+
+ /* FIXME: Remove below print warning
+ *
+ * config->gpio must be set to -EINVAL by platform code if
+ * GPIO control is not required. However, early adopters
+ * not requiring GPIO control may forget to initialize
+ * config->gpio to -EINVAL. This will cause GPIO 0 to be used
+ * for GPIO control.
+ *
+ * This warning will be removed once there are a couple of users
+ * for this driver.
+ */
+ if (!config->gpio)
+ dev_warn(&pdev->dev,
+ "using GPIO 0 for regulator enable control\n");
+
+ ret = gpio_request(config->gpio, config->supply_name);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Could not obtain regulator enable GPIO %d: %d\n",
+ config->gpio, ret);
+ goto err_name;
+ }
+
+ /* set output direction without changing state
+ * to prevent glitch
+ */
+ drvdata->is_enabled = config->enabled_at_boot;
+ ret = drvdata->is_enabled ?
+ config->enable_high : !config->enable_high;
+
+ ret = gpio_direction_output(config->gpio, ret);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Could not configure regulator enable GPIO %d direction: %d\n",
+ config->gpio, ret);
+ goto err_gpio;
+ }
+
+ } else {
+ /* Regulator without GPIO control is considered
+ * always enabled
+ */
+ drvdata->is_enabled = 1;
+ }
drvdata->dev = regulator_register(&drvdata->desc, &pdev->dev,
config->init_data, drvdata);
if (IS_ERR(drvdata->dev)) {
ret = PTR_ERR(drvdata->dev);
- goto err_name;
+ dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
+ goto err_gpio;
}
platform_set_drvdata(pdev, drvdata);
@@ -100,6 +181,9 @@ static int regulator_fixed_voltage_probe(struct platform_device *pdev)
return 0;
+err_gpio:
+ if (gpio_is_valid(config->gpio))
+ gpio_free(config->gpio);
err_name:
kfree(drvdata->desc.name);
err:
@@ -115,6 +199,9 @@ static int regulator_fixed_voltage_remove(struct platform_device *pdev)
kfree(drvdata->desc.name);
kfree(drvdata);
+ if (gpio_is_valid(drvdata->gpio))
+ gpio_free(drvdata->gpio);
+
return 0;
}
diff --git a/drivers/regulator/lp3971.c b/drivers/regulator/lp3971.c
index a61018a2769..7803a320543 100644
--- a/drivers/regulator/lp3971.c
+++ b/drivers/regulator/lp3971.c
@@ -541,7 +541,7 @@ static struct i2c_driver lp3971_i2c_driver = {
static int __init lp3971_module_init(void)
{
- int ret = -ENODEV;
+ int ret;
ret = i2c_add_driver(&lp3971_i2c_driver);
if (ret != 0)
diff --git a/drivers/regulator/mc13783.c b/drivers/regulator/mc13783.c
new file mode 100644
index 00000000000..710211f6744
--- /dev/null
+++ b/drivers/regulator/mc13783.c
@@ -0,0 +1,410 @@
+/*
+ * Regulator Driver for Freescale MC13783 PMIC
+ *
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/mfd/mc13783-private.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+struct mc13783_regulator {
+ struct regulator_desc desc;
+ int reg;
+ int enable_bit;
+};
+
+static struct regulator_ops mc13783_regulator_ops;
+
+static struct mc13783_regulator mc13783_regulators[] = {
+ [MC13783_SW_SW3] = {
+ .desc = {
+ .name = "SW_SW3",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_SW_SW3,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_SWITCHERS_5,
+ .enable_bit = MC13783_SWCTRL_SW3_EN,
+ },
+ [MC13783_SW_PLL] = {
+ .desc = {
+ .name = "SW_PLL",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_SW_PLL,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_SWITCHERS_4,
+ .enable_bit = MC13783_SWCTRL_PLL_EN,
+ },
+ [MC13783_REGU_VAUDIO] = {
+ .desc = {
+ .name = "REGU_VAUDIO",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VAUDIO,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VAUDIO_EN,
+ },
+ [MC13783_REGU_VIOHI] = {
+ .desc = {
+ .name = "REGU_VIOHI",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VIOHI,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VIOHI_EN,
+ },
+ [MC13783_REGU_VIOLO] = {
+ .desc = {
+ .name = "REGU_VIOLO",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VIOLO,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VIOLO_EN,
+ },
+ [MC13783_REGU_VDIG] = {
+ .desc = {
+ .name = "REGU_VDIG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VDIG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VDIG_EN,
+ },
+ [MC13783_REGU_VGEN] = {
+ .desc = {
+ .name = "REGU_VGEN",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VGEN,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VGEN_EN,
+ },
+ [MC13783_REGU_VRFDIG] = {
+ .desc = {
+ .name = "REGU_VRFDIG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFDIG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFDIG_EN,
+ },
+ [MC13783_REGU_VRFREF] = {
+ .desc = {
+ .name = "REGU_VRFREF",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFREF,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFREF_EN,
+ },
+ [MC13783_REGU_VRFCP] = {
+ .desc = {
+ .name = "REGU_VRFCP",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFCP,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFCP_EN,
+ },
+ [MC13783_REGU_VSIM] = {
+ .desc = {
+ .name = "REGU_VSIM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VSIM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VSIM_EN,
+ },
+ [MC13783_REGU_VESIM] = {
+ .desc = {
+ .name = "REGU_VESIM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VESIM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VESIM_EN,
+ },
+ [MC13783_REGU_VCAM] = {
+ .desc = {
+ .name = "REGU_VCAM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VCAM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VCAM_EN,
+ },
+ [MC13783_REGU_VRFBG] = {
+ .desc = {
+ .name = "REGU_VRFBG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFBG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRFBG_EN,
+ },
+ [MC13783_REGU_VVIB] = {
+ .desc = {
+ .name = "REGU_VVIB",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VVIB,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VVIB_EN,
+ },
+ [MC13783_REGU_VRF1] = {
+ .desc = {
+ .name = "REGU_VRF1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRF1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRF1_EN,
+ },
+ [MC13783_REGU_VRF2] = {
+ .desc = {
+ .name = "REGU_VRF2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRF2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRF2_EN,
+ },
+ [MC13783_REGU_VMMC1] = {
+ .desc = {
+ .name = "REGU_VMMC1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VMMC1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VMMC1_EN,
+ },
+ [MC13783_REGU_VMMC2] = {
+ .desc = {
+ .name = "REGU_VMMC2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VMMC2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VMMC2_EN,
+ },
+ [MC13783_REGU_GPO1] = {
+ .desc = {
+ .name = "REGU_GPO1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO1_EN,
+ },
+ [MC13783_REGU_GPO2] = {
+ .desc = {
+ .name = "REGU_GPO2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO2_EN,
+ },
+ [MC13783_REGU_GPO3] = {
+ .desc = {
+ .name = "REGU_GPO3",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO3,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO3_EN,
+ },
+ [MC13783_REGU_GPO4] = {
+ .desc = {
+ .name = "REGU_GPO4",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO4,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO4_EN,
+ },
+};
+
+struct mc13783_priv {
+ struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)];
+ struct mc13783 *mc13783;
+ struct regulator_dev *regulators[0];
+};
+
+static int mc13783_enable(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+ mc13783_regulators[id].enable_bit,
+ mc13783_regulators[id].enable_bit);
+}
+
+static int mc13783_disable(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+ mc13783_regulators[id].enable_bit, 0);
+}
+
+static int mc13783_is_enabled(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int ret, id = rdev_get_id(rdev);
+ unsigned int val;
+
+ ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
+ if (ret)
+ return ret;
+
+ return (val & mc13783_regulators[id].enable_bit) != 0;
+}
+
+static struct regulator_ops mc13783_regulator_ops = {
+ .enable = mc13783_enable,
+ .disable = mc13783_disable,
+ .is_enabled = mc13783_is_enabled,
+};
+
+static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
+{
+ struct mc13783_priv *priv;
+ struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
+ struct mc13783_regulator_init_data *init_data;
+ int i, ret;
+
+ dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
+
+ priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->mc13783 = mc13783;
+
+ for (i = 0; i < mc13783->num_regulators; i++) {
+ init_data = &mc13783->regulators[i];
+ priv->regulators[i] = regulator_register(
+ &mc13783_regulators[init_data->id].desc,
+ &pdev->dev, init_data->init_data, priv);
+
+ if (IS_ERR(priv->regulators[i])) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ mc13783_regulators[i].desc.name);
+ ret = PTR_ERR(priv->regulators[i]);
+ goto err;
+ }
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ return 0;
+err:
+ while (--i >= 0)
+ regulator_unregister(priv->regulators[i]);
+
+ kfree(priv);
+
+ return ret;
+}
+
+static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
+{
+ struct mc13783_priv *priv = platform_get_drvdata(pdev);
+ struct mc13783 *mc13783 = priv->mc13783;
+ int i;
+
+ for (i = 0; i < mc13783->num_regulators; i++)
+ regulator_unregister(priv->regulators[i]);
+
+ return 0;
+}
+
+static struct platform_driver mc13783_regulator_driver = {
+ .driver = {
+ .name = "mc13783-regulator",
+ .owner = THIS_MODULE,
+ },
+ .remove = __devexit_p(mc13783_regulator_remove),
+};
+
+static int __init mc13783_regulator_init(void)
+{
+ return platform_driver_probe(&mc13783_regulator_driver,
+ mc13783_regulator_probe);
+}
+subsys_initcall(mc13783_regulator_init);
+
+static void __exit mc13783_regulator_exit(void)
+{
+ platform_driver_unregister(&mc13783_regulator_driver);
+}
+module_exit(mc13783_regulator_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
+MODULE_ALIAS("platform:mc13783-regulator");
diff --git a/drivers/regulator/pcap-regulator.c b/drivers/regulator/pcap-regulator.c
new file mode 100644
index 00000000000..33d7d899e03
--- /dev/null
+++ b/drivers/regulator/pcap-regulator.c
@@ -0,0 +1,318 @@
+/*
+ * PCAP2 Regulator Driver
+ *
+ * Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/ezx-pcap.h>
+
+static const u16 V1_table[] = {
+ 2775, 1275, 1600, 1725, 1825, 1925, 2075, 2275,
+};
+
+static const u16 V2_table[] = {
+ 2500, 2775,
+};
+
+static const u16 V3_table[] = {
+ 1075, 1275, 1550, 1725, 1876, 1950, 2075, 2275,
+};
+
+static const u16 V4_table[] = {
+ 1275, 1550, 1725, 1875, 1950, 2075, 2275, 2775,
+};
+
+static const u16 V5_table[] = {
+ 1875, 2275, 2475, 2775,
+};
+
+static const u16 V6_table[] = {
+ 2475, 2775,
+};
+
+static const u16 V7_table[] = {
+ 1875, 2775,
+};
+
+#define V8_table V4_table
+
+static const u16 V9_table[] = {
+ 1575, 1875, 2475, 2775,
+};
+
+static const u16 V10_table[] = {
+ 5000,
+};
+
+static const u16 VAUX1_table[] = {
+ 1875, 2475, 2775, 3000,
+};
+
+#define VAUX2_table VAUX1_table
+
+static const u16 VAUX3_table[] = {
+ 1200, 1200, 1200, 1200, 1400, 1600, 1800, 2000,
+ 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600,
+};
+
+static const u16 VAUX4_table[] = {
+ 1800, 1800, 3000, 5000,
+};
+
+static const u16 VSIM_table[] = {
+ 1875, 3000,
+};
+
+static const u16 VSIM2_table[] = {
+ 1875,
+};
+
+static const u16 VVIB_table[] = {
+ 1300, 1800, 2000, 3000,
+};
+
+static const u16 SW1_table[] = {
+ 900, 950, 1000, 1050, 1100, 1150, 1200, 1250,
+ 1300, 1350, 1400, 1450, 1500, 1600, 1875, 2250,
+};
+
+#define SW2_table SW1_table
+
+static const u16 SW3_table[] = {
+ 4000, 4500, 5000, 5500,
+};
+
+struct pcap_regulator {
+ const u8 reg;
+ const u8 en;
+ const u8 index;
+ const u8 stby;
+ const u8 lowpwr;
+ const u8 n_voltages;
+ const u16 *voltage_table;
+};
+
+#define NA 0xff
+
+#define VREG_INFO(_vreg, _reg, _en, _index, _stby, _lowpwr) \
+ [_vreg] = { \
+ .reg = _reg, \
+ .en = _en, \
+ .index = _index, \
+ .stby = _stby, \
+ .lowpwr = _lowpwr, \
+ .n_voltages = ARRAY_SIZE(_vreg##_table), \
+ .voltage_table = _vreg##_table, \
+ }
+
+static struct pcap_regulator vreg_table[] = {
+ VREG_INFO(V1, PCAP_REG_VREG1, 1, 2, 18, 0),
+ VREG_INFO(V2, PCAP_REG_VREG1, 5, 6, 19, 22),
+ VREG_INFO(V3, PCAP_REG_VREG1, 7, 8, 20, 23),
+ VREG_INFO(V4, PCAP_REG_VREG1, 11, 12, 21, 24),
+ /* V5 STBY and LOWPWR are on PCAP_REG_VREG2 */
+ VREG_INFO(V5, PCAP_REG_VREG1, 15, 16, 12, 19),
+
+ VREG_INFO(V6, PCAP_REG_VREG2, 1, 2, 14, 20),
+ VREG_INFO(V7, PCAP_REG_VREG2, 3, 4, 15, 21),
+ VREG_INFO(V8, PCAP_REG_VREG2, 5, 6, 16, 22),
+ VREG_INFO(V9, PCAP_REG_VREG2, 9, 10, 17, 23),
+ VREG_INFO(V10, PCAP_REG_VREG2, 10, NA, 18, 24),
+
+ VREG_INFO(VAUX1, PCAP_REG_AUXVREG, 1, 2, 22, 23),
+ /* VAUX2 ... VSIM2 STBY and LOWPWR are on PCAP_REG_LOWPWR */
+ VREG_INFO(VAUX2, PCAP_REG_AUXVREG, 4, 5, 0, 1),
+ VREG_INFO(VAUX3, PCAP_REG_AUXVREG, 7, 8, 2, 3),
+ VREG_INFO(VAUX4, PCAP_REG_AUXVREG, 12, 13, 4, 5),
+ VREG_INFO(VSIM, PCAP_REG_AUXVREG, 17, 18, NA, 6),
+ VREG_INFO(VSIM2, PCAP_REG_AUXVREG, 16, NA, NA, 7),
+ VREG_INFO(VVIB, PCAP_REG_AUXVREG, 19, 20, NA, NA),
+
+ VREG_INFO(SW1, PCAP_REG_SWCTRL, 1, 2, NA, NA),
+ VREG_INFO(SW2, PCAP_REG_SWCTRL, 6, 7, NA, NA),
+ /* SW3 STBY is on PCAP_REG_AUXVREG */
+ VREG_INFO(SW3, PCAP_REG_SWCTRL, 11, 12, 24, NA),
+
+ /* SWxS used to control SWx voltage on standby */
+/* VREG_INFO(SW1S, PCAP_REG_LOWPWR, NA, 12, NA, NA),
+ VREG_INFO(SW2S, PCAP_REG_LOWPWR, NA, 20, NA, NA), */
+};
+
+static int pcap_regulator_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+ void *pcap = rdev_get_drvdata(rdev);
+ int uV;
+ u8 i;
+
+ /* the regulator doesn't support voltage switching */
+ if (vreg->n_voltages == 1)
+ return -EINVAL;
+
+ for (i = 0; i < vreg->n_voltages; i++) {
+ /* For V1 the first is not the best match */
+ if (i == 0 && rdev_get_id(rdev) == V1)
+ i = 1;
+ else if (i + 1 == vreg->n_voltages && rdev_get_id(rdev) == V1)
+ i = 0;
+
+ uV = vreg->voltage_table[i] * 1000;
+ if (min_uV <= uV && uV <= max_uV)
+ return ezx_pcap_set_bits(pcap, vreg->reg,
+ (vreg->n_voltages - 1) << vreg->index,
+ i << vreg->index);
+
+ if (i == 0 && rdev_get_id(rdev) == V1)
+ i = vreg->n_voltages - 1;
+ }
+
+ /* the requested voltage range is not supported by this regulator */
+ return -EINVAL;
+}
+
+static int pcap_regulator_get_voltage(struct regulator_dev *rdev)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+ void *pcap = rdev_get_drvdata(rdev);
+ u32 tmp;
+ int mV;
+
+ if (vreg->n_voltages == 1)
+ return vreg->voltage_table[0] * 1000;
+
+ ezx_pcap_read(pcap, vreg->reg, &tmp);
+ tmp = ((tmp >> vreg->index) & (vreg->n_voltages - 1));
+ mV = vreg->voltage_table[tmp];
+
+ return mV * 1000;
+}
+
+static int pcap_regulator_enable(struct regulator_dev *rdev)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+ void *pcap = rdev_get_drvdata(rdev);
+
+ if (vreg->en == NA)
+ return -EINVAL;
+
+ return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 1 << vreg->en);
+}
+
+static int pcap_regulator_disable(struct regulator_dev *rdev)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+ void *pcap = rdev_get_drvdata(rdev);
+
+ if (vreg->en == NA)
+ return -EINVAL;
+
+ return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 0);
+}
+
+static int pcap_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+ void *pcap = rdev_get_drvdata(rdev);
+ u32 tmp;
+
+ if (vreg->en == NA)
+ return -EINVAL;
+
+ ezx_pcap_read(pcap, vreg->reg, &tmp);
+ return (tmp >> vreg->en) & 1;
+}
+
+static int pcap_regulator_list_voltage(struct regulator_dev *rdev,
+ unsigned int index)
+{
+ struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
+
+ return vreg->voltage_table[index] * 1000;
+}
+
+static struct regulator_ops pcap_regulator_ops = {
+ .list_voltage = pcap_regulator_list_voltage,
+ .set_voltage = pcap_regulator_set_voltage,
+ .get_voltage = pcap_regulator_get_voltage,
+ .enable = pcap_regulator_enable,
+ .disable = pcap_regulator_disable,
+ .is_enabled = pcap_regulator_is_enabled,
+};
+
+#define VREG(_vreg) \
+ [_vreg] = { \
+ .name = #_vreg, \
+ .id = _vreg, \
+ .n_voltages = ARRAY_SIZE(_vreg##_table), \
+ .ops = &pcap_regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ }
+
+static struct regulator_desc pcap_regulators[] = {
+ VREG(V1), VREG(V2), VREG(V3), VREG(V4), VREG(V5), VREG(V6), VREG(V7),
+ VREG(V8), VREG(V9), VREG(V10), VREG(VAUX1), VREG(VAUX2), VREG(VAUX3),
+ VREG(VAUX4), VREG(VSIM), VREG(VSIM2), VREG(VVIB), VREG(SW1), VREG(SW2),
+};
+
+static int __devinit pcap_regulator_probe(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev;
+ void *pcap = dev_get_drvdata(pdev->dev.parent);
+
+ rdev = regulator_register(&pcap_regulators[pdev->id], &pdev->dev,
+ pdev->dev.platform_data, pcap);
+ if (IS_ERR(rdev))
+ return PTR_ERR(rdev);
+
+ platform_set_drvdata(pdev, rdev);
+
+ return 0;
+}
+
+static int __devexit pcap_regulator_remove(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev = platform_get_drvdata(pdev);
+
+ regulator_unregister(rdev);
+
+ return 0;
+}
+
+static struct platform_driver pcap_regulator_driver = {
+ .driver = {
+ .name = "pcap-regulator",
+ },
+ .probe = pcap_regulator_probe,
+ .remove = __devexit_p(pcap_regulator_remove),
+};
+
+static int __init pcap_regulator_init(void)
+{
+ return platform_driver_register(&pcap_regulator_driver);
+}
+
+static void __exit pcap_regulator_exit(void)
+{
+ platform_driver_unregister(&pcap_regulator_driver);
+}
+
+subsys_initcall(pcap_regulator_init);
+module_exit(pcap_regulator_exit);
+
+MODULE_AUTHOR("Daniel Ribeiro <drwyrm@gmail.com>");
+MODULE_DESCRIPTION("PCAP2 Regulator Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/pcf50633-regulator.c b/drivers/regulator/pcf50633-regulator.c
index 8e14900eb68..0803ffe6236 100644
--- a/drivers/regulator/pcf50633-regulator.c
+++ b/drivers/regulator/pcf50633-regulator.c
@@ -24,11 +24,12 @@
#include <linux/mfd/pcf50633/core.h>
#include <linux/mfd/pcf50633/pmic.h>
-#define PCF50633_REGULATOR(_name, _id) \
+#define PCF50633_REGULATOR(_name, _id, _n) \
{ \
.name = _name, \
.id = _id, \
.ops = &pcf50633_regulator_ops, \
+ .n_voltages = _n, \
.type = REGULATOR_VOLTAGE, \
.owner = THIS_MODULE, \
}
@@ -149,33 +150,20 @@ static int pcf50633_regulator_set_voltage(struct regulator_dev *rdev,
return pcf50633_reg_write(pcf, regnr, volt_bits);
}
-static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
+static int pcf50633_regulator_voltage_value(enum pcf50633_regulator_id id,
+ u8 bits)
{
- struct pcf50633 *pcf;
- int regulator_id, millivolts, volt_bits;
- u8 regnr;
-
- pcf = rdev_get_drvdata(rdev);;
+ int millivolts;
- regulator_id = rdev_get_id(rdev);
- if (regulator_id >= PCF50633_NUM_REGULATORS)
- return -EINVAL;
-
- regnr = pcf50633_regulator_registers[regulator_id];
-
- volt_bits = pcf50633_reg_read(pcf, regnr);
- if (volt_bits < 0)
- return -1;
-
- switch (regulator_id) {
+ switch (id) {
case PCF50633_REGULATOR_AUTO:
- millivolts = auto_voltage_value(volt_bits);
+ millivolts = auto_voltage_value(bits);
break;
case PCF50633_REGULATOR_DOWN1:
- millivolts = down_voltage_value(volt_bits);
+ millivolts = down_voltage_value(bits);
break;
case PCF50633_REGULATOR_DOWN2:
- millivolts = down_voltage_value(volt_bits);
+ millivolts = down_voltage_value(bits);
break;
case PCF50633_REGULATOR_LDO1:
case PCF50633_REGULATOR_LDO2:
@@ -184,7 +172,7 @@ static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
case PCF50633_REGULATOR_LDO5:
case PCF50633_REGULATOR_LDO6:
case PCF50633_REGULATOR_HCLDO:
- millivolts = ldo_voltage_value(volt_bits);
+ millivolts = ldo_voltage_value(bits);
break;
default:
return -EINVAL;
@@ -193,6 +181,49 @@ static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
return millivolts * 1000;
}
+static int pcf50633_regulator_get_voltage(struct regulator_dev *rdev)
+{
+ struct pcf50633 *pcf;
+ int regulator_id;
+ u8 volt_bits, regnr;
+
+ pcf = rdev_get_drvdata(rdev);
+
+ regulator_id = rdev_get_id(rdev);
+ if (regulator_id >= PCF50633_NUM_REGULATORS)
+ return -EINVAL;
+
+ regnr = pcf50633_regulator_registers[regulator_id];
+
+ volt_bits = pcf50633_reg_read(pcf, regnr);
+
+ return pcf50633_regulator_voltage_value(regulator_id, volt_bits);
+}
+
+static int pcf50633_regulator_list_voltage(struct regulator_dev *rdev,
+ unsigned int index)
+{
+ struct pcf50633 *pcf;
+ int regulator_id;
+
+ pcf = rdev_get_drvdata(rdev);
+
+ regulator_id = rdev_get_id(rdev);
+
+ switch (regulator_id) {
+ case PCF50633_REGULATOR_AUTO:
+ index += 0x2f;
+ break;
+ case PCF50633_REGULATOR_HCLDO:
+ index += 0x01;
+ break;
+ default:
+ break;
+ }
+
+ return pcf50633_regulator_voltage_value(regulator_id, index);
+}
+
static int pcf50633_regulator_enable(struct regulator_dev *rdev)
{
struct pcf50633 *pcf = rdev_get_drvdata(rdev);
@@ -246,6 +277,7 @@ static int pcf50633_regulator_is_enabled(struct regulator_dev *rdev)
static struct regulator_ops pcf50633_regulator_ops = {
.set_voltage = pcf50633_regulator_set_voltage,
.get_voltage = pcf50633_regulator_get_voltage,
+ .list_voltage = pcf50633_regulator_list_voltage,
.enable = pcf50633_regulator_enable,
.disable = pcf50633_regulator_disable,
.is_enabled = pcf50633_regulator_is_enabled,
@@ -253,27 +285,27 @@ static struct regulator_ops pcf50633_regulator_ops = {
static struct regulator_desc regulators[] = {
[PCF50633_REGULATOR_AUTO] =
- PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO),
+ PCF50633_REGULATOR("auto", PCF50633_REGULATOR_AUTO, 80),
[PCF50633_REGULATOR_DOWN1] =
- PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1),
+ PCF50633_REGULATOR("down1", PCF50633_REGULATOR_DOWN1, 95),
[PCF50633_REGULATOR_DOWN2] =
- PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2),
+ PCF50633_REGULATOR("down2", PCF50633_REGULATOR_DOWN2, 95),
[PCF50633_REGULATOR_LDO1] =
- PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1),
+ PCF50633_REGULATOR("ldo1", PCF50633_REGULATOR_LDO1, 27),
[PCF50633_REGULATOR_LDO2] =
- PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2),
+ PCF50633_REGULATOR("ldo2", PCF50633_REGULATOR_LDO2, 27),
[PCF50633_REGULATOR_LDO3] =
- PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3),
+ PCF50633_REGULATOR("ldo3", PCF50633_REGULATOR_LDO3, 27),
[PCF50633_REGULATOR_LDO4] =
- PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4),
+ PCF50633_REGULATOR("ldo4", PCF50633_REGULATOR_LDO4, 27),
[PCF50633_REGULATOR_LDO5] =
- PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5),
+ PCF50633_REGULATOR("ldo5", PCF50633_REGULATOR_LDO5, 27),
[PCF50633_REGULATOR_LDO6] =
- PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6),
+ PCF50633_REGULATOR("ldo6", PCF50633_REGULATOR_LDO6, 27),
[PCF50633_REGULATOR_HCLDO] =
- PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO),
+ PCF50633_REGULATOR("hcldo", PCF50633_REGULATOR_HCLDO, 26),
[PCF50633_REGULATOR_MEMLDO] =
- PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO),
+ PCF50633_REGULATOR("memldo", PCF50633_REGULATOR_MEMLDO, 0),
};
static int __devinit pcf50633_regulator_probe(struct platform_device *pdev)
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
new file mode 100644
index 00000000000..07fda0a75ad
--- /dev/null
+++ b/drivers/regulator/tps65023-regulator.c
@@ -0,0 +1,632 @@
+/*
+ * tps65023-regulator.c
+ *
+ * Supports TPS65023 Regulator
+ *
+ * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+/* Register definitions */
+#define TPS65023_REG_VERSION 0
+#define TPS65023_REG_PGOODZ 1
+#define TPS65023_REG_MASK 2
+#define TPS65023_REG_REG_CTRL 3
+#define TPS65023_REG_CON_CTRL 4
+#define TPS65023_REG_CON_CTRL2 5
+#define TPS65023_REG_DEF_CORE 6
+#define TPS65023_REG_DEFSLEW 7
+#define TPS65023_REG_LDO_CTRL 8
+
+/* PGOODZ bitfields */
+#define TPS65023_PGOODZ_PWRFAILZ BIT(7)
+#define TPS65023_PGOODZ_LOWBATTZ BIT(6)
+#define TPS65023_PGOODZ_VDCDC1 BIT(5)
+#define TPS65023_PGOODZ_VDCDC2 BIT(4)
+#define TPS65023_PGOODZ_VDCDC3 BIT(3)
+#define TPS65023_PGOODZ_LDO2 BIT(2)
+#define TPS65023_PGOODZ_LDO1 BIT(1)
+
+/* MASK bitfields */
+#define TPS65023_MASK_PWRFAILZ BIT(7)
+#define TPS65023_MASK_LOWBATTZ BIT(6)
+#define TPS65023_MASK_VDCDC1 BIT(5)
+#define TPS65023_MASK_VDCDC2 BIT(4)
+#define TPS65023_MASK_VDCDC3 BIT(3)
+#define TPS65023_MASK_LDO2 BIT(2)
+#define TPS65023_MASK_LDO1 BIT(1)
+
+/* REG_CTRL bitfields */
+#define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
+#define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
+#define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
+#define TPS65023_REG_CTRL_LDO2_EN BIT(2)
+#define TPS65023_REG_CTRL_LDO1_EN BIT(1)
+
+/* LDO_CTRL bitfields */
+#define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id) ((ldo_id)*4)
+#define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id) (0xF0 >> ((ldo_id)*4))
+
+/* Number of step-down converters available */
+#define TPS65023_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS65023_NUM_LDO 2
+/* Number of total regulators available */
+#define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
+
+/* DCDCs */
+#define TPS65023_DCDC_1 0
+#define TPS65023_DCDC_2 1
+#define TPS65023_DCDC_3 2
+/* LDOs */
+#define TPS65023_LDO_1 3
+#define TPS65023_LDO_2 4
+
+#define TPS65023_MAX_REG_ID TPS65023_LDO_2
+
+/* Supported voltage values for regulators */
+static const u16 VDCDC1_VSEL_table[] = {
+ 800, 825, 850, 875,
+ 900, 925, 950, 975,
+ 1000, 1025, 1050, 1075,
+ 1100, 1125, 1150, 1175,
+ 1200, 1225, 1250, 1275,
+ 1300, 1325, 1350, 1375,
+ 1400, 1425, 1450, 1475,
+ 1500, 1525, 1550, 1600,
+};
+
+static const u16 LDO1_VSEL_table[] = {
+ 1000, 1100, 1300, 1800,
+ 2200, 2600, 2800, 3150,
+};
+
+static const u16 LDO2_VSEL_table[] = {
+ 1050, 1200, 1300, 1800,
+ 2500, 2800, 3000, 3300,
+};
+
+static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDC1_VSEL_table),
+ 0, 0, ARRAY_SIZE(LDO1_VSEL_table),
+ ARRAY_SIZE(LDO2_VSEL_table)};
+
+/* Regulator specific details */
+struct tps_info {
+ const char *name;
+ unsigned min_uV;
+ unsigned max_uV;
+ bool fixed;
+ u8 table_len;
+ const u16 *table;
+};
+
+/* PMIC details */
+struct tps_pmic {
+ struct regulator_desc desc[TPS65023_NUM_REGULATOR];
+ struct i2c_client *client;
+ struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
+ const struct tps_info *info[TPS65023_NUM_REGULATOR];
+ struct mutex io_lock;
+};
+
+static inline int tps_65023_read(struct tps_pmic *tps, u8 reg)
+{
+ return i2c_smbus_read_byte_data(tps->client, reg);
+}
+
+static inline int tps_65023_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(tps->client, reg, val);
+}
+
+static int tps_65023_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data |= mask;
+ err = tps_65023_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_65023_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data &= ~mask;
+
+ err = tps_65023_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+
+}
+
+static int tps_65023_reg_read(struct tps_pmic *tps, u8 reg)
+{
+ int data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_65023_read(tps, reg);
+ if (data < 0)
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return data;
+}
+
+static int tps_65023_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ int err;
+
+ mutex_lock(&tps->io_lock);
+
+ err = tps_65023_write(tps, reg, val);
+ if (err < 0)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps65023_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps65023_ldo_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ data = tps_65023_reg_read(tps, TPS65023_REG_REG_CTRL);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps65023_dcdc_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_dcdc_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS65023_NUM_REGULATOR - dcdc;
+ return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_ldo_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ return tps_65023_set_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_ldo_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ shift = (ldo == TPS65023_LDO_1 ? 1 : 2);
+ return tps_65023_clear_bits(tps, TPS65023_REG_REG_CTRL, 1 << shift);
+}
+
+static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ if (dcdc == TPS65023_DCDC_1) {
+ data = tps_65023_reg_read(tps, TPS65023_REG_DEF_CORE);
+ if (data < 0)
+ return data;
+ data &= (tps->info[dcdc]->table_len - 1);
+ return tps->info[dcdc]->table[data] * 1000;
+ } else
+ return tps->info[dcdc]->min_uV;
+}
+
+static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ int vsel;
+
+ if (dcdc != TPS65023_DCDC_1)
+ return -EINVAL;
+
+ if (min_uV < tps->info[dcdc]->min_uV
+ || min_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[dcdc]->min_uV
+ || max_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
+ int mV = tps->info[dcdc]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ /* write to the register in case we found a match */
+ if (vsel == tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel);
+}
+
+static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
+ if (data < 0)
+ return data;
+
+ data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
+ data &= (tps->info[ldo]->table_len - 1);
+ return tps->info[ldo]->table[data] * 1000;
+}
+
+static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
+ int mV = tps->info[ldo]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ if (vsel == tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
+ if (data < 0)
+ return data;
+
+ data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1);
+ data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)));
+ return tps_65023_reg_write(tps, TPS65023_REG_LDO_CTRL, data);
+}
+
+static int tps65023_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
+ return -EINVAL;
+
+ if (dcdc == TPS65023_DCDC_1) {
+ if (selector >= tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[dcdc]->table[selector] * 1000;
+ } else
+ return tps->info[dcdc]->min_uV;
+}
+
+static int tps65023_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[ldo]->table[selector] * 1000;
+}
+
+/* Operations permitted on VDCDCx */
+static struct regulator_ops tps65023_dcdc_ops = {
+ .is_enabled = tps65023_dcdc_is_enabled,
+ .enable = tps65023_dcdc_enable,
+ .disable = tps65023_dcdc_disable,
+ .get_voltage = tps65023_dcdc_get_voltage,
+ .set_voltage = tps65023_dcdc_set_voltage,
+ .list_voltage = tps65023_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps65023_ldo_ops = {
+ .is_enabled = tps65023_ldo_is_enabled,
+ .enable = tps65023_ldo_enable,
+ .disable = tps65023_ldo_disable,
+ .get_voltage = tps65023_ldo_get_voltage,
+ .set_voltage = tps65023_ldo_set_voltage,
+ .list_voltage = tps65023_ldo_list_voltage,
+};
+
+static
+int tps_65023_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ static int desc_id;
+ const struct tps_info *info = (void *)id->driver_data;
+ struct regulator_init_data *init_data;
+ struct regulator_dev *rdev;
+ struct tps_pmic *tps;
+ int i;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ /**
+ * init_data points to array of regulator_init structures
+ * coming from the board-evm file.
+ */
+ init_data = client->dev.platform_data;
+
+ if (!init_data)
+ return -EIO;
+
+ tps = kzalloc(sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ mutex_init(&tps->io_lock);
+
+ /* common for all regulators */
+ tps->client = client;
+
+ for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
+ /* Store regulator specific information */
+ tps->info[i] = info;
+
+ tps->desc[i].name = info->name;
+ tps->desc[i].id = desc_id++;
+ tps->desc[i].n_voltages = num_voltages[i];
+ tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
+ &tps65023_ldo_ops : &tps65023_dcdc_ops);
+ tps->desc[i].type = REGULATOR_VOLTAGE;
+ tps->desc[i].owner = THIS_MODULE;
+
+ /* Register the regulators */
+ rdev = regulator_register(&tps->desc[i], &client->dev,
+ init_data, tps);
+ if (IS_ERR(rdev)) {
+ dev_err(&client->dev, "failed to register %s\n",
+ id->name);
+
+ /* Unregister */
+ while (i)
+ regulator_unregister(tps->rdev[--i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ tps->rdev[i] = rdev;
+ }
+
+ i2c_set_clientdata(client, tps);
+
+ return 0;
+}
+
+/**
+ * tps_65023_remove - TPS65023 driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister TPS driver as an i2c client device driver
+ */
+static int __devexit tps_65023_remove(struct i2c_client *client)
+{
+ struct tps_pmic *tps = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
+ regulator_unregister(tps->rdev[i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+
+ return 0;
+}
+
+static const struct tps_info tps65023_regs[] = {
+ {
+ .name = "VDCDC1",
+ .min_uV = 800000,
+ .max_uV = 1600000,
+ .table_len = ARRAY_SIZE(VDCDC1_VSEL_table),
+ .table = VDCDC1_VSEL_table,
+ },
+ {
+ .name = "VDCDC2",
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .fixed = 1,
+ },
+ {
+ .name = "VDCDC3",
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .fixed = 1,
+ },
+ {
+ .name = "LDO1",
+ .min_uV = 1000000,
+ .max_uV = 3150000,
+ .table_len = ARRAY_SIZE(LDO1_VSEL_table),
+ .table = LDO1_VSEL_table,
+ },
+ {
+ .name = "LDO2",
+ .min_uV = 1050000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO2_VSEL_table),
+ .table = LDO2_VSEL_table,
+ },
+};
+
+static const struct i2c_device_id tps_65023_id[] = {
+ {.name = "tps65023",
+ .driver_data = (unsigned long) tps65023_regs,},
+ { },
+};
+
+MODULE_DEVICE_TABLE(i2c, tps_65023_id);
+
+static struct i2c_driver tps_65023_i2c_driver = {
+ .driver = {
+ .name = "tps65023",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps_65023_probe,
+ .remove = __devexit_p(tps_65023_remove),
+ .id_table = tps_65023_id,
+};
+
+/**
+ * tps_65023_init
+ *
+ * Module init function
+ */
+static int __init tps_65023_init(void)
+{
+ return i2c_add_driver(&tps_65023_i2c_driver);
+}
+subsys_initcall(tps_65023_init);
+
+/**
+ * tps_65023_cleanup
+ *
+ * Module exit function
+ */
+static void __exit tps_65023_cleanup(void)
+{
+ i2c_del_driver(&tps_65023_i2c_driver);
+}
+module_exit(tps_65023_cleanup);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/tps6507x-regulator.c b/drivers/regulator/tps6507x-regulator.c
new file mode 100644
index 00000000000..f8a6dfbef75
--- /dev/null
+++ b/drivers/regulator/tps6507x-regulator.c
@@ -0,0 +1,714 @@
+/*
+ * tps6507x-regulator.c
+ *
+ * Regulator driver for TPS65073 PMIC
+ *
+ * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+
+/* Register definitions */
+#define TPS6507X_REG_PPATH1 0X01
+#define TPS6507X_REG_INT 0X02
+#define TPS6507X_REG_CHGCONFIG0 0X03
+#define TPS6507X_REG_CHGCONFIG1 0X04
+#define TPS6507X_REG_CHGCONFIG2 0X05
+#define TPS6507X_REG_CHGCONFIG3 0X06
+#define TPS6507X_REG_REG_ADCONFIG 0X07
+#define TPS6507X_REG_TSCMODE 0X08
+#define TPS6507X_REG_ADRESULT_1 0X09
+#define TPS6507X_REG_ADRESULT_2 0X0A
+#define TPS6507X_REG_PGOOD 0X0B
+#define TPS6507X_REG_PGOODMASK 0X0C
+#define TPS6507X_REG_CON_CTRL1 0X0D
+#define TPS6507X_REG_CON_CTRL2 0X0E
+#define TPS6507X_REG_CON_CTRL3 0X0F
+#define TPS6507X_REG_DEFDCDC1 0X10
+#define TPS6507X_REG_DEFDCDC2_LOW 0X11
+#define TPS6507X_REG_DEFDCDC2_HIGH 0X12
+#define TPS6507X_REG_DEFDCDC3_LOW 0X13
+#define TPS6507X_REG_DEFDCDC3_HIGH 0X14
+#define TPS6507X_REG_DEFSLEW 0X15
+#define TPS6507X_REG_LDO_CTRL1 0X16
+#define TPS6507X_REG_DEFLDO2 0X17
+#define TPS6507X_REG_WLED_CTRL1 0X18
+#define TPS6507X_REG_WLED_CTRL2 0X19
+
+/* CON_CTRL1 bitfields */
+#define TPS6507X_CON_CTRL1_DCDC1_ENABLE BIT(4)
+#define TPS6507X_CON_CTRL1_DCDC2_ENABLE BIT(3)
+#define TPS6507X_CON_CTRL1_DCDC3_ENABLE BIT(2)
+#define TPS6507X_CON_CTRL1_LDO1_ENABLE BIT(1)
+#define TPS6507X_CON_CTRL1_LDO2_ENABLE BIT(0)
+
+/* DEFDCDC1 bitfields */
+#define TPS6507X_DEFDCDC1_DCDC1_EXT_ADJ_EN BIT(7)
+#define TPS6507X_DEFDCDC1_DCDC1_MASK 0X3F
+
+/* DEFDCDC2_LOW bitfields */
+#define TPS6507X_DEFDCDC2_LOW_DCDC2_MASK 0X3F
+
+/* DEFDCDC2_HIGH bitfields */
+#define TPS6507X_DEFDCDC2_HIGH_DCDC2_MASK 0X3F
+
+/* DEFDCDC3_LOW bitfields */
+#define TPS6507X_DEFDCDC3_LOW_DCDC3_MASK 0X3F
+
+/* DEFDCDC3_HIGH bitfields */
+#define TPS6507X_DEFDCDC3_HIGH_DCDC3_MASK 0X3F
+
+/* TPS6507X_REG_LDO_CTRL1 bitfields */
+#define TPS6507X_REG_LDO_CTRL1_LDO1_MASK 0X0F
+
+/* TPS6507X_REG_DEFLDO2 bitfields */
+#define TPS6507X_REG_DEFLDO2_LDO2_MASK 0X3F
+
+/* VDCDC MASK */
+#define TPS6507X_DEFDCDCX_DCDC_MASK 0X3F
+
+/* DCDC's */
+#define TPS6507X_DCDC_1 0
+#define TPS6507X_DCDC_2 1
+#define TPS6507X_DCDC_3 2
+/* LDOs */
+#define TPS6507X_LDO_1 3
+#define TPS6507X_LDO_2 4
+
+#define TPS6507X_MAX_REG_ID TPS6507X_LDO_2
+
+/* Number of step-down converters available */
+#define TPS6507X_NUM_DCDC 3
+/* Number of LDO voltage regulators available */
+#define TPS6507X_NUM_LDO 2
+/* Number of total regulators available */
+#define TPS6507X_NUM_REGULATOR (TPS6507X_NUM_DCDC + TPS6507X_NUM_LDO)
+
+/* Supported voltage values for regulators (in milliVolts) */
+static const u16 VDCDCx_VSEL_table[] = {
+ 725, 750, 775, 800,
+ 825, 850, 875, 900,
+ 925, 950, 975, 1000,
+ 1025, 1050, 1075, 1100,
+ 1125, 1150, 1175, 1200,
+ 1225, 1250, 1275, 1300,
+ 1325, 1350, 1375, 1400,
+ 1425, 1450, 1475, 1500,
+ 1550, 1600, 1650, 1700,
+ 1750, 1800, 1850, 1900,
+ 1950, 2000, 2050, 2100,
+ 2150, 2200, 2250, 2300,
+ 2350, 2400, 2450, 2500,
+ 2550, 2600, 2650, 2700,
+ 2750, 2800, 2850, 2900,
+ 3000, 3100, 3200, 3300,
+};
+
+static const u16 LDO1_VSEL_table[] = {
+ 1000, 1100, 1200, 1250,
+ 1300, 1350, 1400, 1500,
+ 1600, 1800, 2500, 2750,
+ 2800, 3000, 3100, 3300,
+};
+
+static const u16 LDO2_VSEL_table[] = {
+ 725, 750, 775, 800,
+ 825, 850, 875, 900,
+ 925, 950, 975, 1000,
+ 1025, 1050, 1075, 1100,
+ 1125, 1150, 1175, 1200,
+ 1225, 1250, 1275, 1300,
+ 1325, 1350, 1375, 1400,
+ 1425, 1450, 1475, 1500,
+ 1550, 1600, 1650, 1700,
+ 1750, 1800, 1850, 1900,
+ 1950, 2000, 2050, 2100,
+ 2150, 2200, 2250, 2300,
+ 2350, 2400, 2450, 2500,
+ 2550, 2600, 2650, 2700,
+ 2750, 2800, 2850, 2900,
+ 3000, 3100, 3200, 3300,
+};
+
+static unsigned int num_voltages[] = {ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(VDCDCx_VSEL_table),
+ ARRAY_SIZE(LDO1_VSEL_table),
+ ARRAY_SIZE(LDO2_VSEL_table)};
+
+struct tps_info {
+ const char *name;
+ unsigned min_uV;
+ unsigned max_uV;
+ u8 table_len;
+ const u16 *table;
+};
+
+struct tps_pmic {
+ struct regulator_desc desc[TPS6507X_NUM_REGULATOR];
+ struct i2c_client *client;
+ struct regulator_dev *rdev[TPS6507X_NUM_REGULATOR];
+ const struct tps_info *info[TPS6507X_NUM_REGULATOR];
+ struct mutex io_lock;
+};
+
+static inline int tps_6507x_read(struct tps_pmic *tps, u8 reg)
+{
+ return i2c_smbus_read_byte_data(tps->client, reg);
+}
+
+static inline int tps_6507x_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ return i2c_smbus_write_byte_data(tps->client, reg, val);
+}
+
+static int tps_6507x_set_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data |= mask;
+ err = tps_6507x_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_6507x_clear_bits(struct tps_pmic *tps, u8 reg, u8 mask)
+{
+ int err, data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0) {
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+ err = data;
+ goto out;
+ }
+
+ data &= ~mask;
+ err = tps_6507x_write(tps, reg, data);
+ if (err)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+out:
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps_6507x_reg_read(struct tps_pmic *tps, u8 reg)
+{
+ int data;
+
+ mutex_lock(&tps->io_lock);
+
+ data = tps_6507x_read(tps, reg);
+ if (data < 0)
+ dev_err(&tps->client->dev, "Read from reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return data;
+}
+
+static int tps_6507x_reg_write(struct tps_pmic *tps, u8 reg, u8 val)
+{
+ int err;
+
+ mutex_lock(&tps->io_lock);
+
+ err = tps_6507x_write(tps, reg, val);
+ if (err < 0)
+ dev_err(&tps->client->dev, "Write for reg 0x%x failed\n", reg);
+
+ mutex_unlock(&tps->io_lock);
+ return err;
+}
+
+static int tps6507x_dcdc_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps6507x_ldo_is_enabled(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ data = tps_6507x_reg_read(tps, TPS6507X_REG_CON_CTRL1);
+
+ if (data < 0)
+ return data;
+ else
+ return (data & 1<<shift) ? 1 : 0;
+}
+
+static int tps6507x_dcdc_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_dcdc_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+ u8 shift;
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - dcdc;
+ return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_ldo_enable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ return tps_6507x_set_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_ldo_disable(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+ u8 shift;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ shift = TPS6507X_MAX_REG_ID - ldo;
+ return tps_6507x_clear_bits(tps, TPS6507X_REG_CON_CTRL1, 1 << shift);
+}
+
+static int tps6507x_dcdc_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, dcdc = rdev_get_id(dev);
+ u8 reg;
+
+ switch (dcdc) {
+ case TPS6507X_DCDC_1:
+ reg = TPS6507X_REG_DEFDCDC1;
+ break;
+ case TPS6507X_DCDC_2:
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
+ break;
+ case TPS6507X_DCDC_3:
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= TPS6507X_DEFDCDCX_DCDC_MASK;
+ return tps->info[dcdc]->table[data] * 1000;
+}
+
+static int tps6507x_dcdc_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, dcdc = rdev_get_id(dev);
+ u8 reg;
+
+ switch (dcdc) {
+ case TPS6507X_DCDC_1:
+ reg = TPS6507X_REG_DEFDCDC1;
+ break;
+ case TPS6507X_DCDC_2:
+ reg = TPS6507X_REG_DEFDCDC2_LOW;
+ break;
+ case TPS6507X_DCDC_3:
+ reg = TPS6507X_REG_DEFDCDC3_LOW;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (min_uV < tps->info[dcdc]->min_uV
+ || min_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[dcdc]->min_uV
+ || max_uV > tps->info[dcdc]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
+ int mV = tps->info[dcdc]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ /* write to the register in case we found a match */
+ if (vsel == tps->info[dcdc]->table_len)
+ return -EINVAL;
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= ~TPS6507X_DEFDCDCX_DCDC_MASK;
+ data |= vsel;
+
+ return tps_6507x_reg_write(tps, reg, data);
+}
+
+static int tps6507x_ldo_get_voltage(struct regulator_dev *dev)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, ldo = rdev_get_id(dev);
+ u8 reg, mask;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+ else {
+ reg = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
+ mask = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
+ TPS6507X_REG_DEFLDO2_LDO2_MASK);
+ }
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= mask;
+ return tps->info[ldo]->table[data] * 1000;
+}
+
+static int tps6507x_ldo_set_voltage(struct regulator_dev *dev,
+ int min_uV, int max_uV)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int data, vsel, ldo = rdev_get_id(dev);
+ u8 reg, mask;
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+ else {
+ reg = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1 : TPS6507X_REG_DEFLDO2);
+ mask = (ldo == TPS6507X_LDO_1 ?
+ TPS6507X_REG_LDO_CTRL1_LDO1_MASK :
+ TPS6507X_REG_DEFLDO2_LDO2_MASK);
+ }
+
+ if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+ if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
+ return -EINVAL;
+
+ for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
+ int mV = tps->info[ldo]->table[vsel];
+ int uV = mV * 1000;
+
+ /* Break at the first in-range value */
+ if (min_uV <= uV && uV <= max_uV)
+ break;
+ }
+
+ if (vsel == tps->info[ldo]->table_len)
+ return -EINVAL;
+
+ data = tps_6507x_reg_read(tps, reg);
+ if (data < 0)
+ return data;
+
+ data &= ~mask;
+ data |= vsel;
+
+ return tps_6507x_reg_write(tps, reg, data);
+}
+
+static int tps6507x_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int dcdc = rdev_get_id(dev);
+
+ if (dcdc < TPS6507X_DCDC_1 || dcdc > TPS6507X_DCDC_3)
+ return -EINVAL;
+
+ if (selector >= tps->info[dcdc]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[dcdc]->table[selector] * 1000;
+}
+
+static int tps6507x_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ struct tps_pmic *tps = rdev_get_drvdata(dev);
+ int ldo = rdev_get_id(dev);
+
+ if (ldo < TPS6507X_LDO_1 || ldo > TPS6507X_LDO_2)
+ return -EINVAL;
+
+ if (selector >= tps->info[ldo]->table_len)
+ return -EINVAL;
+ else
+ return tps->info[ldo]->table[selector] * 1000;
+}
+
+/* Operations permitted on VDCDCx */
+static struct regulator_ops tps6507x_dcdc_ops = {
+ .is_enabled = tps6507x_dcdc_is_enabled,
+ .enable = tps6507x_dcdc_enable,
+ .disable = tps6507x_dcdc_disable,
+ .get_voltage = tps6507x_dcdc_get_voltage,
+ .set_voltage = tps6507x_dcdc_set_voltage,
+ .list_voltage = tps6507x_dcdc_list_voltage,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps6507x_ldo_ops = {
+ .is_enabled = tps6507x_ldo_is_enabled,
+ .enable = tps6507x_ldo_enable,
+ .disable = tps6507x_ldo_disable,
+ .get_voltage = tps6507x_ldo_get_voltage,
+ .set_voltage = tps6507x_ldo_set_voltage,
+ .list_voltage = tps6507x_ldo_list_voltage,
+};
+
+static
+int tps_6507x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ static int desc_id;
+ const struct tps_info *info = (void *)id->driver_data;
+ struct regulator_init_data *init_data;
+ struct regulator_dev *rdev;
+ struct tps_pmic *tps;
+ int i;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ /**
+ * init_data points to array of regulator_init structures
+ * coming from the board-evm file.
+ */
+ init_data = client->dev.platform_data;
+
+ if (!init_data)
+ return -EIO;
+
+ tps = kzalloc(sizeof(*tps), GFP_KERNEL);
+ if (!tps)
+ return -ENOMEM;
+
+ mutex_init(&tps->io_lock);
+
+ /* common for all regulators */
+ tps->client = client;
+
+ for (i = 0; i < TPS6507X_NUM_REGULATOR; i++, info++, init_data++) {
+ /* Register the regulators */
+ tps->info[i] = info;
+ tps->desc[i].name = info->name;
+ tps->desc[i].id = desc_id++;
+ tps->desc[i].n_voltages = num_voltages[i];
+ tps->desc[i].ops = (i > TPS6507X_DCDC_3 ?
+ &tps6507x_ldo_ops : &tps6507x_dcdc_ops);
+ tps->desc[i].type = REGULATOR_VOLTAGE;
+ tps->desc[i].owner = THIS_MODULE;
+
+ rdev = regulator_register(&tps->desc[i],
+ &client->dev, init_data, tps);
+ if (IS_ERR(rdev)) {
+ dev_err(&client->dev, "failed to register %s\n",
+ id->name);
+
+ /* Unregister */
+ while (i)
+ regulator_unregister(tps->rdev[--i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+
+ kfree(tps);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ tps->rdev[i] = rdev;
+ }
+
+ i2c_set_clientdata(client, tps);
+
+ return 0;
+}
+
+/**
+ * tps_6507x_remove - TPS6507x driver i2c remove handler
+ * @client: i2c driver client device structure
+ *
+ * Unregister TPS driver as an i2c client device driver
+ */
+static int __devexit tps_6507x_remove(struct i2c_client *client)
+{
+ struct tps_pmic *tps = i2c_get_clientdata(client);
+ int i;
+
+ for (i = 0; i < TPS6507X_NUM_REGULATOR; i++)
+ regulator_unregister(tps->rdev[i]);
+
+ tps->client = NULL;
+
+ /* clear the client data in i2c */
+ i2c_set_clientdata(client, NULL);
+ kfree(tps);
+
+ return 0;
+}
+
+static const struct tps_info tps6507x_regs[] = {
+ {
+ .name = "VDCDC1",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "VDCDC2",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "VDCDC3",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(VDCDCx_VSEL_table),
+ .table = VDCDCx_VSEL_table,
+ },
+ {
+ .name = "LDO1",
+ .min_uV = 1000000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO1_VSEL_table),
+ .table = LDO1_VSEL_table,
+ },
+ {
+ .name = "LDO2",
+ .min_uV = 725000,
+ .max_uV = 3300000,
+ .table_len = ARRAY_SIZE(LDO2_VSEL_table),
+ .table = LDO2_VSEL_table,
+ },
+};
+
+static const struct i2c_device_id tps_6507x_id[] = {
+ {.name = "tps6507x",
+ .driver_data = (unsigned long) tps6507x_regs,},
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, tps_6507x_id);
+
+static struct i2c_driver tps_6507x_i2c_driver = {
+ .driver = {
+ .name = "tps6507x",
+ .owner = THIS_MODULE,
+ },
+ .probe = tps_6507x_probe,
+ .remove = __devexit_p(tps_6507x_remove),
+ .id_table = tps_6507x_id,
+};
+
+/**
+ * tps_6507x_init
+ *
+ * Module init function
+ */
+static int __init tps_6507x_init(void)
+{
+ return i2c_add_driver(&tps_6507x_i2c_driver);
+}
+subsys_initcall(tps_6507x_init);
+
+/**
+ * tps_6507x_cleanup
+ *
+ * Module exit function
+ */
+static void __exit tps_6507x_cleanup(void)
+{
+ i2c_del_driver(&tps_6507x_i2c_driver);
+}
+module_exit(tps_6507x_cleanup);
+
+MODULE_AUTHOR("Texas Instruments");
+MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/regulator/userspace-consumer.c b/drivers/regulator/userspace-consumer.c
index 06d2fa96a8b..44917da4ac9 100644
--- a/drivers/regulator/userspace-consumer.c
+++ b/drivers/regulator/userspace-consumer.c
@@ -93,16 +93,21 @@ static ssize_t reg_set_state(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(name, 0444, reg_show_name, NULL);
static DEVICE_ATTR(state, 0644, reg_show_state, reg_set_state);
-static struct device_attribute *attributes[] = {
- &dev_attr_name,
- &dev_attr_state,
+static struct attribute *attributes[] = {
+ &dev_attr_name.attr,
+ &dev_attr_state.attr,
+ NULL,
+};
+
+static const struct attribute_group attr_group = {
+ .attrs = attributes,
};
static int regulator_userspace_consumer_probe(struct platform_device *pdev)
{
struct regulator_userspace_consumer_data *pdata;
struct userspace_consumer_data *drvdata;
- int ret, i;
+ int ret;
pdata = pdev->dev.platform_data;
if (!pdata)
@@ -125,31 +130,29 @@ static int regulator_userspace_consumer_probe(struct platform_device *pdev)
goto err_alloc_supplies;
}
- for (i = 0; i < ARRAY_SIZE(attributes); i++) {
- ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0)
- goto err_create_attrs;
- }
+ ret = sysfs_create_group(&pdev->dev.kobj, &attr_group);
+ if (ret != 0)
+ goto err_create_attrs;
- if (pdata->init_on)
+ if (pdata->init_on) {
ret = regulator_bulk_enable(drvdata->num_supplies,
drvdata->supplies);
-
- drvdata->enabled = pdata->init_on;
-
- if (ret) {
- dev_err(&pdev->dev, "Failed to set initial state: %d\n", ret);
- goto err_create_attrs;
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to set initial state: %d\n", ret);
+ goto err_enable;
+ }
}
+ drvdata->enabled = pdata->init_on;
platform_set_drvdata(pdev, drvdata);
return 0;
-err_create_attrs:
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+err_enable:
+ sysfs_remove_group(&pdev->dev.kobj, &attr_group);
+err_create_attrs:
regulator_bulk_free(drvdata->num_supplies, drvdata->supplies);
err_alloc_supplies:
@@ -160,10 +163,8 @@ err_alloc_supplies:
static int regulator_userspace_consumer_remove(struct platform_device *pdev)
{
struct userspace_consumer_data *data = platform_get_drvdata(pdev);
- int i;
- for (i = 0; i < ARRAY_SIZE(attributes); i++)
- device_remove_file(&pdev->dev, attributes[i]);
+ sysfs_remove_group(&pdev->dev.kobj, &attr_group);
if (data->enabled)
regulator_bulk_disable(data->num_supplies, data->supplies);
diff --git a/drivers/regulator/virtual.c b/drivers/regulator/virtual.c
index e7db5664722..addc032c84b 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -27,71 +27,81 @@ struct virtual_consumer_data {
unsigned int mode;
};
-static void update_voltage_constraints(struct virtual_consumer_data *data)
+static void update_voltage_constraints(struct device *dev,
+ struct virtual_consumer_data *data)
{
int ret;
if (data->min_uV && data->max_uV
&& data->min_uV <= data->max_uV) {
+ dev_dbg(dev, "Requesting %d-%duV\n",
+ data->min_uV, data->max_uV);
ret = regulator_set_voltage(data->regulator,
- data->min_uV, data->max_uV);
+ data->min_uV, data->max_uV);
if (ret != 0) {
- printk(KERN_ERR "regulator_set_voltage() failed: %d\n",
- ret);
+ dev_err(dev,
+ "regulator_set_voltage() failed: %d\n", ret);
return;
}
}
if (data->min_uV && data->max_uV && !data->enabled) {
+ dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
data->enabled = 1;
else
- printk(KERN_ERR "regulator_enable() failed: %d\n",
+ dev_err(dev, "regulator_enable() failed: %d\n",
ret);
}
if (!(data->min_uV && data->max_uV) && data->enabled) {
+ dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
data->enabled = 0;
else
- printk(KERN_ERR "regulator_disable() failed: %d\n",
+ dev_err(dev, "regulator_disable() failed: %d\n",
ret);
}
}
-static void update_current_limit_constraints(struct virtual_consumer_data
- *data)
+static void update_current_limit_constraints(struct device *dev,
+ struct virtual_consumer_data *data)
{
int ret;
if (data->max_uA
&& data->min_uA <= data->max_uA) {
+ dev_dbg(dev, "Requesting %d-%duA\n",
+ data->min_uA, data->max_uA);
ret = regulator_set_current_limit(data->regulator,
data->min_uA, data->max_uA);
if (ret != 0) {
- pr_err("regulator_set_current_limit() failed: %d\n",
- ret);
+ dev_err(dev,
+ "regulator_set_current_limit() failed: %d\n",
+ ret);
return;
}
}
if (data->max_uA && !data->enabled) {
+ dev_dbg(dev, "Enabling regulator\n");
ret = regulator_enable(data->regulator);
if (ret == 0)
data->enabled = 1;
else
- printk(KERN_ERR "regulator_enable() failed: %d\n",
+ dev_err(dev, "regulator_enable() failed: %d\n",
ret);
}
if (!(data->min_uA && data->max_uA) && data->enabled) {
+ dev_dbg(dev, "Disabling regulator\n");
ret = regulator_disable(data->regulator);
if (ret == 0)
data->enabled = 0;
else
- printk(KERN_ERR "regulator_disable() failed: %d\n",
+ dev_err(dev, "regulator_disable() failed: %d\n",
ret);
}
}
@@ -115,7 +125,7 @@ static ssize_t set_min_uV(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->lock);
data->min_uV = val;
- update_voltage_constraints(data);
+ update_voltage_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -141,7 +151,7 @@ static ssize_t set_max_uV(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->lock);
data->max_uV = val;
- update_voltage_constraints(data);
+ update_voltage_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -167,7 +177,7 @@ static ssize_t set_min_uA(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->lock);
data->min_uA = val;
- update_current_limit_constraints(data);
+ update_current_limit_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -193,7 +203,7 @@ static ssize_t set_max_uA(struct device *dev, struct device_attribute *attr,
mutex_lock(&data->lock);
data->max_uA = val;
- update_current_limit_constraints(data);
+ update_current_limit_constraints(dev, data);
mutex_unlock(&data->lock);
@@ -276,8 +286,7 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
drvdata = kzalloc(sizeof(struct virtual_consumer_data), GFP_KERNEL);
if (drvdata == NULL) {
- ret = -ENOMEM;
- goto err;
+ return -ENOMEM;
}
mutex_init(&drvdata->lock);
@@ -285,13 +294,18 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
drvdata->regulator = regulator_get(&pdev->dev, reg_id);
if (IS_ERR(drvdata->regulator)) {
ret = PTR_ERR(drvdata->regulator);
+ dev_err(&pdev->dev, "Failed to obtain supply '%s': %d\n",
+ reg_id, ret);
goto err;
}
for (i = 0; i < ARRAY_SIZE(attributes); i++) {
ret = device_create_file(&pdev->dev, attributes[i]);
- if (ret != 0)
- goto err;
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to create attr %d: %d\n",
+ i, ret);
+ goto err_regulator;
+ }
}
drvdata->mode = regulator_get_mode(drvdata->regulator);
@@ -300,6 +314,8 @@ static int regulator_virtual_consumer_probe(struct platform_device *pdev)
return 0;
+err_regulator:
+ regulator_put(drvdata->regulator);
err:
for (i = 0; i < ARRAY_SIZE(attributes); i++)
device_remove_file(&pdev->dev, attributes[i]);
diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
new file mode 100644
index 00000000000..2eefc1a0cf0
--- /dev/null
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -0,0 +1,862 @@
+/*
+ * wm831x-dcdc.c -- DC-DC buck convertor driver for the WM831x series
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/regulator.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+#define WM831X_BUCKV_MAX_SELECTOR 0x68
+#define WM831X_BUCKP_MAX_SELECTOR 0x66
+
+#define WM831X_DCDC_MODE_FAST 0
+#define WM831X_DCDC_MODE_NORMAL 1
+#define WM831X_DCDC_MODE_IDLE 2
+#define WM831X_DCDC_MODE_STANDBY 3
+
+#define WM831X_DCDC_MAX_NAME 6
+
+/* Register offsets in control block */
+#define WM831X_DCDC_CONTROL_1 0
+#define WM831X_DCDC_CONTROL_2 1
+#define WM831X_DCDC_ON_CONFIG 2
+#define WM831X_DCDC_SLEEP_CONTROL 3
+
+/*
+ * Shared
+ */
+
+struct wm831x_dcdc {
+ char name[WM831X_DCDC_MAX_NAME];
+ struct regulator_desc desc;
+ int base;
+ struct wm831x *wm831x;
+ struct regulator_dev *regulator;
+};
+
+static int wm831x_dcdc_is_enabled(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int reg;
+
+ reg = wm831x_reg_read(wm831x, WM831X_DCDC_ENABLE);
+ if (reg < 0)
+ return reg;
+
+ if (reg & mask)
+ return 1;
+ else
+ return 0;
+}
+
+static int wm831x_dcdc_enable(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+
+ return wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, mask, mask);
+}
+
+static int wm831x_dcdc_disable(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+
+ return wm831x_set_bits(wm831x, WM831X_DCDC_ENABLE, mask, 0);
+}
+
+static unsigned int wm831x_dcdc_get_mode(struct regulator_dev *rdev)
+
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+ int val;
+
+ val = wm831x_reg_read(wm831x, reg);
+ if (val < 0)
+ return val;
+
+ val = (val & WM831X_DC1_ON_MODE_MASK) >> WM831X_DC1_ON_MODE_SHIFT;
+
+ switch (val) {
+ case WM831X_DCDC_MODE_FAST:
+ return REGULATOR_MODE_FAST;
+ case WM831X_DCDC_MODE_NORMAL:
+ return REGULATOR_MODE_NORMAL;
+ case WM831X_DCDC_MODE_STANDBY:
+ return REGULATOR_MODE_STANDBY;
+ case WM831X_DCDC_MODE_IDLE:
+ return REGULATOR_MODE_IDLE;
+ default:
+ BUG();
+ }
+}
+
+static int wm831x_dcdc_set_mode_int(struct wm831x *wm831x, int reg,
+ unsigned int mode)
+{
+ int val;
+
+ switch (mode) {
+ case REGULATOR_MODE_FAST:
+ val = WM831X_DCDC_MODE_FAST;
+ break;
+ case REGULATOR_MODE_NORMAL:
+ val = WM831X_DCDC_MODE_NORMAL;
+ break;
+ case REGULATOR_MODE_STANDBY:
+ val = WM831X_DCDC_MODE_STANDBY;
+ break;
+ case REGULATOR_MODE_IDLE:
+ val = WM831X_DCDC_MODE_IDLE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return wm831x_set_bits(wm831x, reg, WM831X_DC1_ON_MODE_MASK,
+ val << WM831X_DC1_ON_MODE_SHIFT);
+}
+
+static int wm831x_dcdc_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+
+ return wm831x_dcdc_set_mode_int(wm831x, reg, mode);
+}
+
+static int wm831x_dcdc_set_suspend_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
+
+ return wm831x_dcdc_set_mode_int(wm831x, reg, mode);
+}
+
+static int wm831x_dcdc_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ int ret;
+
+ /* First, check for errors */
+ ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & (1 << rdev_get_id(rdev))) {
+ dev_dbg(wm831x->dev, "DCDC%d under voltage\n",
+ rdev_get_id(rdev) + 1);
+ return REGULATOR_STATUS_ERROR;
+ }
+
+ /* DCDC1 and DCDC2 can additionally detect high voltage/current */
+ if (rdev_get_id(rdev) < 2) {
+ if (ret & (WM831X_DC1_OV_STS << rdev_get_id(rdev))) {
+ dev_dbg(wm831x->dev, "DCDC%d over voltage\n",
+ rdev_get_id(rdev) + 1);
+ return REGULATOR_STATUS_ERROR;
+ }
+
+ if (ret & (WM831X_DC1_HC_STS << rdev_get_id(rdev))) {
+ dev_dbg(wm831x->dev, "DCDC%d over current\n",
+ rdev_get_id(rdev) + 1);
+ return REGULATOR_STATUS_ERROR;
+ }
+ }
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS);
+ if (ret < 0)
+ return ret;
+ if (!(ret & (1 << rdev_get_id(rdev))))
+ return REGULATOR_STATUS_OFF;
+
+ /* TODO: When we handle hardware control modes so we can report the
+ * current mode. */
+ return REGULATOR_STATUS_ON;
+}
+
+static irqreturn_t wm831x_dcdc_uv_irq(int irq, void *data)
+{
+ struct wm831x_dcdc *dcdc = data;
+
+ regulator_notifier_call_chain(dcdc->regulator,
+ REGULATOR_EVENT_UNDER_VOLTAGE,
+ NULL);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wm831x_dcdc_oc_irq(int irq, void *data)
+{
+ struct wm831x_dcdc *dcdc = data;
+
+ regulator_notifier_call_chain(dcdc->regulator,
+ REGULATOR_EVENT_OVER_CURRENT,
+ NULL);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * BUCKV specifics
+ */
+
+static int wm831x_buckv_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector <= 0x8)
+ return 600000;
+ if (selector <= WM831X_BUCKV_MAX_SELECTOR)
+ return 600000 + ((selector - 0x8) * 12500);
+ return -EINVAL;
+}
+
+static int wm831x_buckv_set_voltage_int(struct regulator_dev *rdev, int reg,
+ int min_uV, int max_uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 vsel;
+
+ if (min_uV < 600000)
+ vsel = 0;
+ else if (min_uV <= 1800000)
+ vsel = ((min_uV - 600000) / 12500) + 8;
+ else
+ return -EINVAL;
+
+ if (wm831x_buckv_list_voltage(rdev, vsel) > max_uV)
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_DC1_ON_VSEL_MASK, vsel);
+}
+
+static int wm831x_buckv_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+
+ return wm831x_buckv_set_voltage_int(rdev, reg, min_uV, max_uV);
+}
+
+static int wm831x_buckv_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
+
+ return wm831x_buckv_set_voltage_int(rdev, reg, uV, uV);
+}
+
+static int wm831x_buckv_get_voltage(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+ int val;
+
+ val = wm831x_reg_read(wm831x, reg);
+ if (val < 0)
+ return val;
+
+ return wm831x_buckv_list_voltage(rdev, val & WM831X_DC1_ON_VSEL_MASK);
+}
+
+/* Current limit options */
+static u16 wm831x_dcdc_ilim[] = {
+ 125, 250, 375, 500, 625, 750, 875, 1000
+};
+
+static int wm831x_buckv_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_dcdc_ilim); i++) {
+ if (max_uA <= wm831x_dcdc_ilim[i])
+ break;
+ }
+ if (i == ARRAY_SIZE(wm831x_dcdc_ilim))
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_DC1_HC_THR_MASK, i);
+}
+
+static int wm831x_buckv_get_current_limit(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_CONTROL_2;
+ int val;
+
+ val = wm831x_reg_read(wm831x, reg);
+ if (val < 0)
+ return val;
+
+ return wm831x_dcdc_ilim[val & WM831X_DC1_HC_THR_MASK];
+}
+
+static struct regulator_ops wm831x_buckv_ops = {
+ .set_voltage = wm831x_buckv_set_voltage,
+ .get_voltage = wm831x_buckv_get_voltage,
+ .list_voltage = wm831x_buckv_list_voltage,
+ .set_suspend_voltage = wm831x_buckv_set_suspend_voltage,
+ .set_current_limit = wm831x_buckv_set_current_limit,
+ .get_current_limit = wm831x_buckv_get_current_limit,
+
+ .is_enabled = wm831x_dcdc_is_enabled,
+ .enable = wm831x_dcdc_enable,
+ .disable = wm831x_dcdc_disable,
+ .get_status = wm831x_dcdc_get_status,
+ .get_mode = wm831x_dcdc_get_mode,
+ .set_mode = wm831x_dcdc_set_mode,
+ .set_suspend_mode = wm831x_dcdc_set_suspend_mode,
+};
+
+static __devinit int wm831x_buckv_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->dcdc);
+ struct wm831x_dcdc *dcdc;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
+
+ if (pdata == NULL || pdata->dcdc[id] == NULL)
+ return -ENODEV;
+
+ dcdc = kzalloc(sizeof(struct wm831x_dcdc), GFP_KERNEL);
+ if (dcdc == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ dcdc->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ dcdc->base = res->start;
+
+ snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
+ dcdc->desc.name = dcdc->name;
+ dcdc->desc.id = id;
+ dcdc->desc.type = REGULATOR_VOLTAGE;
+ dcdc->desc.n_voltages = WM831X_BUCKV_MAX_SELECTOR + 1;
+ dcdc->desc.ops = &wm831x_buckv_ops;
+ dcdc->desc.owner = THIS_MODULE;
+
+ dcdc->regulator = regulator_register(&dcdc->desc, &pdev->dev,
+ pdata->dcdc[id], dcdc);
+ if (IS_ERR(dcdc->regulator)) {
+ ret = PTR_ERR(dcdc->regulator);
+ dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "UV");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_dcdc_uv_irq,
+ IRQF_TRIGGER_RISING, dcdc->name,
+ dcdc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ irq = platform_get_irq_byname(pdev, "HC");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_dcdc_oc_irq,
+ IRQF_TRIGGER_RISING, dcdc->name,
+ dcdc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request HC IRQ %d: %d\n",
+ irq, ret);
+ goto err_uv;
+ }
+
+ platform_set_drvdata(pdev, dcdc);
+
+ return 0;
+
+err_uv:
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
+err_regulator:
+ regulator_unregister(dcdc->regulator);
+err:
+ kfree(dcdc);
+ return ret;
+}
+
+static __devexit int wm831x_buckv_remove(struct platform_device *pdev)
+{
+ struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "HC"), dcdc);
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
+ regulator_unregister(dcdc->regulator);
+ kfree(dcdc);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_buckv_driver = {
+ .probe = wm831x_buckv_probe,
+ .remove = __devexit_p(wm831x_buckv_remove),
+ .driver = {
+ .name = "wm831x-buckv",
+ },
+};
+
+/*
+ * BUCKP specifics
+ */
+
+static int wm831x_buckp_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ if (selector <= WM831X_BUCKP_MAX_SELECTOR)
+ return 850000 + (selector * 25000);
+ else
+ return -EINVAL;
+}
+
+static int wm831x_buckp_set_voltage_int(struct regulator_dev *rdev, int reg,
+ int min_uV, int max_uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 vsel;
+
+ if (min_uV <= 34000000)
+ vsel = (min_uV - 850000) / 25000;
+ else
+ return -EINVAL;
+
+ if (wm831x_buckp_list_voltage(rdev, vsel) > max_uV)
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_DC3_ON_VSEL_MASK, vsel);
+}
+
+static int wm831x_buckp_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+
+ return wm831x_buckp_set_voltage_int(rdev, reg, min_uV, max_uV);
+}
+
+static int wm831x_buckp_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ u16 reg = dcdc->base + WM831X_DCDC_SLEEP_CONTROL;
+
+ return wm831x_buckp_set_voltage_int(rdev, reg, uV, uV);
+}
+
+static int wm831x_buckp_get_voltage(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ u16 reg = dcdc->base + WM831X_DCDC_ON_CONFIG;
+ int val;
+
+ val = wm831x_reg_read(wm831x, reg);
+ if (val < 0)
+ return val;
+
+ return wm831x_buckp_list_voltage(rdev, val & WM831X_DC3_ON_VSEL_MASK);
+}
+
+static struct regulator_ops wm831x_buckp_ops = {
+ .set_voltage = wm831x_buckp_set_voltage,
+ .get_voltage = wm831x_buckp_get_voltage,
+ .list_voltage = wm831x_buckp_list_voltage,
+ .set_suspend_voltage = wm831x_buckp_set_suspend_voltage,
+
+ .is_enabled = wm831x_dcdc_is_enabled,
+ .enable = wm831x_dcdc_enable,
+ .disable = wm831x_dcdc_disable,
+ .get_status = wm831x_dcdc_get_status,
+ .get_mode = wm831x_dcdc_get_mode,
+ .set_mode = wm831x_dcdc_set_mode,
+ .set_suspend_mode = wm831x_dcdc_set_suspend_mode,
+};
+
+static __devinit int wm831x_buckp_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->dcdc);
+ struct wm831x_dcdc *dcdc;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
+
+ if (pdata == NULL || pdata->dcdc[id] == NULL)
+ return -ENODEV;
+
+ dcdc = kzalloc(sizeof(struct wm831x_dcdc), GFP_KERNEL);
+ if (dcdc == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ dcdc->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ dcdc->base = res->start;
+
+ snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
+ dcdc->desc.name = dcdc->name;
+ dcdc->desc.id = id;
+ dcdc->desc.type = REGULATOR_VOLTAGE;
+ dcdc->desc.n_voltages = WM831X_BUCKP_MAX_SELECTOR + 1;
+ dcdc->desc.ops = &wm831x_buckp_ops;
+ dcdc->desc.owner = THIS_MODULE;
+
+ dcdc->regulator = regulator_register(&dcdc->desc, &pdev->dev,
+ pdata->dcdc[id], dcdc);
+ if (IS_ERR(dcdc->regulator)) {
+ ret = PTR_ERR(dcdc->regulator);
+ dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "UV");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_dcdc_uv_irq,
+ IRQF_TRIGGER_RISING, dcdc->name,
+ dcdc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ platform_set_drvdata(pdev, dcdc);
+
+ return 0;
+
+err_regulator:
+ regulator_unregister(dcdc->regulator);
+err:
+ kfree(dcdc);
+ return ret;
+}
+
+static __devexit int wm831x_buckp_remove(struct platform_device *pdev)
+{
+ struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
+ regulator_unregister(dcdc->regulator);
+ kfree(dcdc);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_buckp_driver = {
+ .probe = wm831x_buckp_probe,
+ .remove = __devexit_p(wm831x_buckp_remove),
+ .driver = {
+ .name = "wm831x-buckp",
+ },
+};
+
+/*
+ * DCDC boost convertors
+ */
+
+static int wm831x_boostp_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+ int ret;
+
+ /* First, check for errors */
+ ret = wm831x_reg_read(wm831x, WM831X_DCDC_UV_STATUS);
+ if (ret < 0)
+ return ret;
+
+ if (ret & (1 << rdev_get_id(rdev))) {
+ dev_dbg(wm831x->dev, "DCDC%d under voltage\n",
+ rdev_get_id(rdev) + 1);
+ return REGULATOR_STATUS_ERROR;
+ }
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_DCDC_STATUS);
+ if (ret < 0)
+ return ret;
+ if (ret & (1 << rdev_get_id(rdev)))
+ return REGULATOR_STATUS_ON;
+ else
+ return REGULATOR_STATUS_OFF;
+}
+
+static struct regulator_ops wm831x_boostp_ops = {
+ .get_status = wm831x_boostp_get_status,
+
+ .is_enabled = wm831x_dcdc_is_enabled,
+ .enable = wm831x_dcdc_enable,
+ .disable = wm831x_dcdc_disable,
+};
+
+static __devinit int wm831x_boostp_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->dcdc);
+ struct wm831x_dcdc *dcdc;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing DCDC%d\n", id + 1);
+
+ if (pdata == NULL || pdata->dcdc[id] == NULL)
+ return -ENODEV;
+
+ dcdc = kzalloc(sizeof(struct wm831x_dcdc), GFP_KERNEL);
+ if (dcdc == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ dcdc->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ dcdc->base = res->start;
+
+ snprintf(dcdc->name, sizeof(dcdc->name), "DCDC%d", id + 1);
+ dcdc->desc.name = dcdc->name;
+ dcdc->desc.id = id;
+ dcdc->desc.type = REGULATOR_VOLTAGE;
+ dcdc->desc.ops = &wm831x_boostp_ops;
+ dcdc->desc.owner = THIS_MODULE;
+
+ dcdc->regulator = regulator_register(&dcdc->desc, &pdev->dev,
+ pdata->dcdc[id], dcdc);
+ if (IS_ERR(dcdc->regulator)) {
+ ret = PTR_ERR(dcdc->regulator);
+ dev_err(wm831x->dev, "Failed to register DCDC%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "UV");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_dcdc_uv_irq,
+ IRQF_TRIGGER_RISING, dcdc->name,
+ dcdc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ platform_set_drvdata(pdev, dcdc);
+
+ return 0;
+
+err_regulator:
+ regulator_unregister(dcdc->regulator);
+err:
+ kfree(dcdc);
+ return ret;
+}
+
+static __devexit int wm831x_boostp_remove(struct platform_device *pdev)
+{
+ struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = dcdc->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), dcdc);
+ regulator_unregister(dcdc->regulator);
+ kfree(dcdc);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_boostp_driver = {
+ .probe = wm831x_boostp_probe,
+ .remove = __devexit_p(wm831x_boostp_remove),
+ .driver = {
+ .name = "wm831x-boostp",
+ },
+};
+
+/*
+ * External Power Enable
+ *
+ * These aren't actually DCDCs but look like them in hardware so share
+ * code.
+ */
+
+#define WM831X_EPE_BASE 6
+
+static struct regulator_ops wm831x_epe_ops = {
+ .is_enabled = wm831x_dcdc_is_enabled,
+ .enable = wm831x_dcdc_enable,
+ .disable = wm831x_dcdc_disable,
+ .get_status = wm831x_dcdc_get_status,
+};
+
+static __devinit int wm831x_epe_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->epe);
+ struct wm831x_dcdc *dcdc;
+ int ret;
+
+ dev_dbg(&pdev->dev, "Probing EPE%d\n", id + 1);
+
+ if (pdata == NULL || pdata->epe[id] == NULL)
+ return -ENODEV;
+
+ dcdc = kzalloc(sizeof(struct wm831x_dcdc), GFP_KERNEL);
+ if (dcdc == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ dcdc->wm831x = wm831x;
+
+ /* For current parts this is correct; probably need to revisit
+ * in future.
+ */
+ snprintf(dcdc->name, sizeof(dcdc->name), "EPE%d", id + 1);
+ dcdc->desc.name = dcdc->name;
+ dcdc->desc.id = id + WM831X_EPE_BASE; /* Offset in DCDC registers */
+ dcdc->desc.ops = &wm831x_epe_ops;
+ dcdc->desc.type = REGULATOR_VOLTAGE;
+ dcdc->desc.owner = THIS_MODULE;
+
+ dcdc->regulator = regulator_register(&dcdc->desc, &pdev->dev,
+ pdata->epe[id], dcdc);
+ if (IS_ERR(dcdc->regulator)) {
+ ret = PTR_ERR(dcdc->regulator);
+ dev_err(wm831x->dev, "Failed to register EPE%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, dcdc);
+
+ return 0;
+
+err:
+ kfree(dcdc);
+ return ret;
+}
+
+static __devexit int wm831x_epe_remove(struct platform_device *pdev)
+{
+ struct wm831x_dcdc *dcdc = platform_get_drvdata(pdev);
+
+ regulator_unregister(dcdc->regulator);
+ kfree(dcdc);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_epe_driver = {
+ .probe = wm831x_epe_probe,
+ .remove = __devexit_p(wm831x_epe_remove),
+ .driver = {
+ .name = "wm831x-epe",
+ },
+};
+
+static int __init wm831x_dcdc_init(void)
+{
+ int ret;
+ ret = platform_driver_register(&wm831x_buckv_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x BUCKV driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_buckp_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x BUCKP driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_boostp_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x BOOST driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_epe_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x EPE driver: %d\n", ret);
+
+ return 0;
+}
+subsys_initcall(wm831x_dcdc_init);
+
+static void __exit wm831x_dcdc_exit(void)
+{
+ platform_driver_unregister(&wm831x_epe_driver);
+ platform_driver_unregister(&wm831x_boostp_driver);
+ platform_driver_unregister(&wm831x_buckp_driver);
+ platform_driver_unregister(&wm831x_buckv_driver);
+}
+module_exit(wm831x_dcdc_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mark Brown");
+MODULE_DESCRIPTION("WM831x DC-DC convertor driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-buckv");
+MODULE_ALIAS("platform:wm831x-buckp");
diff --git a/drivers/regulator/wm831x-isink.c b/drivers/regulator/wm831x-isink.c
new file mode 100644
index 00000000000..1d8d9879d3a
--- /dev/null
+++ b/drivers/regulator/wm831x-isink.c
@@ -0,0 +1,260 @@
+/*
+ * wm831x-isink.c -- Current sink driver for the WM831x series
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/regulator.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+#define WM831X_ISINK_MAX_NAME 7
+
+struct wm831x_isink {
+ char name[WM831X_ISINK_MAX_NAME];
+ struct regulator_desc desc;
+ int reg;
+ struct wm831x *wm831x;
+ struct regulator_dev *regulator;
+};
+
+static int wm831x_isink_enable(struct regulator_dev *rdev)
+{
+ struct wm831x_isink *isink = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = isink->wm831x;
+ int ret;
+
+ /* We have a two stage enable: first start the ISINK... */
+ ret = wm831x_set_bits(wm831x, isink->reg, WM831X_CS1_ENA,
+ WM831X_CS1_ENA);
+ if (ret != 0)
+ return ret;
+
+ /* ...then enable drive */
+ ret = wm831x_set_bits(wm831x, isink->reg, WM831X_CS1_DRIVE,
+ WM831X_CS1_DRIVE);
+ if (ret != 0)
+ wm831x_set_bits(wm831x, isink->reg, WM831X_CS1_ENA, 0);
+
+ return ret;
+
+}
+
+static int wm831x_isink_disable(struct regulator_dev *rdev)
+{
+ struct wm831x_isink *isink = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = isink->wm831x;
+ int ret;
+
+ ret = wm831x_set_bits(wm831x, isink->reg, WM831X_CS1_DRIVE, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = wm831x_set_bits(wm831x, isink->reg, WM831X_CS1_ENA, 0);
+ if (ret < 0)
+ return ret;
+
+ return ret;
+
+}
+
+static int wm831x_isink_is_enabled(struct regulator_dev *rdev)
+{
+ struct wm831x_isink *isink = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = isink->wm831x;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, isink->reg);
+ if (ret < 0)
+ return ret;
+
+ if ((ret & (WM831X_CS1_ENA | WM831X_CS1_DRIVE)) ==
+ (WM831X_CS1_ENA | WM831X_CS1_DRIVE))
+ return 1;
+ else
+ return 0;
+}
+
+static int wm831x_isink_set_current(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ struct wm831x_isink *isink = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = isink->wm831x;
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(wm831x_isinkv_values); i++) {
+ int val = wm831x_isinkv_values[i];
+ if (min_uA >= val && val <= max_uA) {
+ ret = wm831x_set_bits(wm831x, isink->reg,
+ WM831X_CS1_ISEL_MASK, i);
+ return ret;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int wm831x_isink_get_current(struct regulator_dev *rdev)
+{
+ struct wm831x_isink *isink = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = isink->wm831x;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, isink->reg);
+ if (ret < 0)
+ return ret;
+
+ ret &= WM831X_CS1_ISEL_MASK;
+ if (ret > WM831X_ISINK_MAX_ISEL)
+ ret = WM831X_ISINK_MAX_ISEL;
+
+ return wm831x_isinkv_values[ret];
+}
+
+static struct regulator_ops wm831x_isink_ops = {
+ .is_enabled = wm831x_isink_is_enabled,
+ .enable = wm831x_isink_enable,
+ .disable = wm831x_isink_disable,
+ .set_current_limit = wm831x_isink_set_current,
+ .get_current_limit = wm831x_isink_get_current,
+};
+
+static irqreturn_t wm831x_isink_irq(int irq, void *data)
+{
+ struct wm831x_isink *isink = data;
+
+ regulator_notifier_call_chain(isink->regulator,
+ REGULATOR_EVENT_OVER_CURRENT,
+ NULL);
+
+ return IRQ_HANDLED;
+}
+
+
+static __devinit int wm831x_isink_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ struct wm831x_isink *isink;
+ int id = pdev->id % ARRAY_SIZE(pdata->isink);
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing ISINK%d\n", id + 1);
+
+ if (pdata == NULL || pdata->isink[id] == NULL)
+ return -ENODEV;
+
+ isink = kzalloc(sizeof(struct wm831x_isink), GFP_KERNEL);
+ if (isink == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ isink->reg = res->start;
+
+ /* For current parts this is correct; probably need to revisit
+ * in future.
+ */
+ snprintf(isink->name, sizeof(isink->name), "ISINK%d", id + 1);
+ isink->desc.name = isink->name;
+ isink->desc.id = id;
+ isink->desc.ops = &wm831x_isink_ops;
+ isink->desc.type = REGULATOR_CURRENT;
+ isink->desc.owner = THIS_MODULE;
+
+ isink->regulator = regulator_register(&isink->desc, &pdev->dev,
+ pdata->isink[id], isink);
+ if (IS_ERR(isink->regulator)) {
+ ret = PTR_ERR(isink->regulator);
+ dev_err(wm831x->dev, "Failed to register ISINK%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ ret = wm831x_request_irq(wm831x, irq, wm831x_isink_irq,
+ IRQF_TRIGGER_RISING, isink->name,
+ isink);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request ISINK IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ platform_set_drvdata(pdev, isink);
+
+ return 0;
+
+err_regulator:
+ regulator_unregister(isink->regulator);
+err:
+ kfree(isink);
+ return ret;
+}
+
+static __devexit int wm831x_isink_remove(struct platform_device *pdev)
+{
+ struct wm831x_isink *isink = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = isink->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq(pdev, 0), isink);
+
+ regulator_unregister(isink->regulator);
+ kfree(isink);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_isink_driver = {
+ .probe = wm831x_isink_probe,
+ .remove = __devexit_p(wm831x_isink_remove),
+ .driver = {
+ .name = "wm831x-isink",
+ },
+};
+
+static int __init wm831x_isink_init(void)
+{
+ int ret;
+ ret = platform_driver_register(&wm831x_isink_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x ISINK driver: %d\n", ret);
+
+ return ret;
+}
+subsys_initcall(wm831x_isink_init);
+
+static void __exit wm831x_isink_exit(void)
+{
+ platform_driver_unregister(&wm831x_isink_driver);
+}
+module_exit(wm831x_isink_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mark Brown");
+MODULE_DESCRIPTION("WM831x current sink driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-isink");
diff --git a/drivers/regulator/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
new file mode 100644
index 00000000000..bb61aede480
--- /dev/null
+++ b/drivers/regulator/wm831x-ldo.c
@@ -0,0 +1,852 @@
+/*
+ * wm831x-ldo.c -- LDO driver for the WM831x series
+ *
+ * Copyright 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/wm831x/core.h>
+#include <linux/mfd/wm831x/regulator.h>
+#include <linux/mfd/wm831x/pdata.h>
+
+#define WM831X_LDO_MAX_NAME 6
+
+#define WM831X_LDO_CONTROL 0
+#define WM831X_LDO_ON_CONTROL 1
+#define WM831X_LDO_SLEEP_CONTROL 2
+
+#define WM831X_ALIVE_LDO_ON_CONTROL 0
+#define WM831X_ALIVE_LDO_SLEEP_CONTROL 1
+
+struct wm831x_ldo {
+ char name[WM831X_LDO_MAX_NAME];
+ struct regulator_desc desc;
+ int base;
+ struct wm831x *wm831x;
+ struct regulator_dev *regulator;
+};
+
+/*
+ * Shared
+ */
+
+static int wm831x_ldo_is_enabled(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int reg;
+
+ reg = wm831x_reg_read(wm831x, WM831X_LDO_ENABLE);
+ if (reg < 0)
+ return reg;
+
+ if (reg & mask)
+ return 1;
+ else
+ return 0;
+}
+
+static int wm831x_ldo_enable(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+
+ return wm831x_set_bits(wm831x, WM831X_LDO_ENABLE, mask, mask);
+}
+
+static int wm831x_ldo_disable(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+
+ return wm831x_set_bits(wm831x, WM831X_LDO_ENABLE, mask, 0);
+}
+
+static irqreturn_t wm831x_ldo_uv_irq(int irq, void *data)
+{
+ struct wm831x_ldo *ldo = data;
+
+ regulator_notifier_call_chain(ldo->regulator,
+ REGULATOR_EVENT_UNDER_VOLTAGE,
+ NULL);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * General purpose LDOs
+ */
+
+#define WM831X_GP_LDO_SELECTOR_LOW 0xe
+#define WM831X_GP_LDO_MAX_SELECTOR 0x1f
+
+static int wm831x_gp_ldo_list_voltage(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ /* 0.9-1.6V in 50mV steps */
+ if (selector <= WM831X_GP_LDO_SELECTOR_LOW)
+ return 900000 + (selector * 50000);
+ /* 1.7-3.3V in 50mV steps */
+ if (selector <= WM831X_GP_LDO_MAX_SELECTOR)
+ return 1600000 + ((selector - WM831X_GP_LDO_SELECTOR_LOW)
+ * 100000);
+ return -EINVAL;
+}
+
+static int wm831x_gp_ldo_set_voltage_int(struct regulator_dev *rdev, int reg,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int vsel, ret;
+
+ if (min_uV < 900000)
+ vsel = 0;
+ else if (min_uV < 1700000)
+ vsel = ((min_uV - 900000) / 50000);
+ else
+ vsel = ((min_uV - 1700000) / 100000)
+ + WM831X_GP_LDO_SELECTOR_LOW + 1;
+
+ ret = wm831x_gp_ldo_list_voltage(rdev, vsel);
+ if (ret < 0)
+ return ret;
+ if (ret < min_uV || ret > max_uV)
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, vsel);
+}
+
+static int wm831x_gp_ldo_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_LDO_ON_CONTROL;
+
+ return wm831x_gp_ldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+}
+
+static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+
+ return wm831x_gp_ldo_set_voltage_int(rdev, reg, uV, uV);
+}
+
+static int wm831x_gp_ldo_get_voltage(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, reg);
+ if (ret < 0)
+ return ret;
+
+ ret &= WM831X_LDO1_ON_VSEL_MASK;
+
+ return wm831x_gp_ldo_list_voltage(rdev, ret);
+}
+
+static unsigned int wm831x_gp_ldo_get_mode(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ unsigned int ret;
+
+ ret = wm831x_reg_read(wm831x, on_reg);
+ if (ret < 0)
+ return 0;
+
+ if (!(ret & WM831X_LDO1_ON_MODE))
+ return REGULATOR_MODE_NORMAL;
+
+ ret = wm831x_reg_read(wm831x, ctrl_reg);
+ if (ret < 0)
+ return 0;
+
+ if (ret & WM831X_LDO1_LP_MODE)
+ return REGULATOR_MODE_STANDBY;
+ else
+ return REGULATOR_MODE_IDLE;
+}
+
+static int wm831x_gp_ldo_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE, 0);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case REGULATOR_MODE_IDLE:
+ ret = wm831x_set_bits(wm831x, ctrl_reg,
+ WM831X_LDO1_LP_MODE,
+ WM831X_LDO1_LP_MODE);
+ if (ret < 0)
+ return ret;
+
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE,
+ WM831X_LDO1_ON_MODE);
+ if (ret < 0)
+ return ret;
+
+ case REGULATOR_MODE_STANDBY:
+ ret = wm831x_set_bits(wm831x, ctrl_reg,
+ WM831X_LDO1_LP_MODE, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO1_ON_MODE,
+ WM831X_LDO1_ON_MODE);
+ if (ret < 0)
+ return ret;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm831x_gp_ldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (!(ret & mask))
+ return REGULATOR_STATUS_OFF;
+
+ /* Is it reporting under voltage? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+ if (ret & mask)
+ return REGULATOR_STATUS_ERROR;
+
+ ret = wm831x_gp_ldo_get_mode(rdev);
+ if (ret < 0)
+ return ret;
+ else
+ return regulator_mode_to_status(ret);
+}
+
+static unsigned int wm831x_gp_ldo_get_optimum_mode(struct regulator_dev *rdev,
+ int input_uV,
+ int output_uV, int load_uA)
+{
+ if (load_uA < 20000)
+ return REGULATOR_MODE_STANDBY;
+ if (load_uA < 50000)
+ return REGULATOR_MODE_IDLE;
+ return REGULATOR_MODE_NORMAL;
+}
+
+
+static struct regulator_ops wm831x_gp_ldo_ops = {
+ .list_voltage = wm831x_gp_ldo_list_voltage,
+ .get_voltage = wm831x_gp_ldo_get_voltage,
+ .set_voltage = wm831x_gp_ldo_set_voltage,
+ .set_suspend_voltage = wm831x_gp_ldo_set_suspend_voltage,
+ .get_mode = wm831x_gp_ldo_get_mode,
+ .set_mode = wm831x_gp_ldo_set_mode,
+ .get_status = wm831x_gp_ldo_get_status,
+ .get_optimum_mode = wm831x_gp_ldo_get_optimum_mode,
+
+ .is_enabled = wm831x_ldo_is_enabled,
+ .enable = wm831x_ldo_enable,
+ .disable = wm831x_ldo_disable,
+};
+
+static __devinit int wm831x_gp_ldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->ldo);
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ if (pdata == NULL || pdata->ldo[id] == NULL)
+ return -ENODEV;
+
+ ldo = kzalloc(sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (ldo == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = WM831X_GP_LDO_MAX_SELECTOR + 1;
+ ldo->desc.ops = &wm831x_gp_ldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+
+ ldo->regulator = regulator_register(&ldo->desc, &pdev->dev,
+ pdata->ldo[id], ldo);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "UV");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name,
+ ldo);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err_regulator:
+ regulator_unregister(ldo->regulator);
+err:
+ kfree(ldo);
+ return ret;
+}
+
+static __devexit int wm831x_gp_ldo_remove(struct platform_device *pdev)
+{
+ struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = ldo->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), ldo);
+ regulator_unregister(ldo->regulator);
+ kfree(ldo);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_gp_ldo_driver = {
+ .probe = wm831x_gp_ldo_probe,
+ .remove = __devexit_p(wm831x_gp_ldo_remove),
+ .driver = {
+ .name = "wm831x-ldo",
+ },
+};
+
+/*
+ * Analogue LDOs
+ */
+
+
+#define WM831X_ALDO_SELECTOR_LOW 0xc
+#define WM831X_ALDO_MAX_SELECTOR 0x1f
+
+static int wm831x_aldo_list_voltage(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ /* 1-1.6V in 50mV steps */
+ if (selector <= WM831X_ALDO_SELECTOR_LOW)
+ return 1000000 + (selector * 50000);
+ /* 1.7-3.5V in 50mV steps */
+ if (selector <= WM831X_ALDO_MAX_SELECTOR)
+ return 1600000 + ((selector - WM831X_ALDO_SELECTOR_LOW)
+ * 100000);
+ return -EINVAL;
+}
+
+static int wm831x_aldo_set_voltage_int(struct regulator_dev *rdev, int reg,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int vsel, ret;
+
+ if (min_uV < 1000000)
+ vsel = 0;
+ else if (min_uV < 1700000)
+ vsel = ((min_uV - 1000000) / 50000);
+ else
+ vsel = ((min_uV - 1700000) / 100000)
+ + WM831X_ALDO_SELECTOR_LOW + 1;
+
+ ret = wm831x_aldo_list_voltage(rdev, vsel);
+ if (ret < 0)
+ return ret;
+ if (ret < min_uV || ret > max_uV)
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, vsel);
+}
+
+static int wm831x_aldo_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_LDO_ON_CONTROL;
+
+ return wm831x_aldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+}
+
+static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+
+ return wm831x_aldo_set_voltage_int(rdev, reg, uV, uV);
+}
+
+static int wm831x_aldo_get_voltage(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, reg);
+ if (ret < 0)
+ return ret;
+
+ ret &= WM831X_LDO7_ON_VSEL_MASK;
+
+ return wm831x_aldo_list_voltage(rdev, ret);
+}
+
+static unsigned int wm831x_aldo_get_mode(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ unsigned int ret;
+
+ ret = wm831x_reg_read(wm831x, on_reg);
+ if (ret < 0)
+ return 0;
+
+ if (ret & WM831X_LDO7_ON_MODE)
+ return REGULATOR_MODE_IDLE;
+ else
+ return REGULATOR_MODE_NORMAL;
+}
+
+static int wm831x_aldo_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int ctrl_reg = ldo->base + WM831X_LDO_CONTROL;
+ int on_reg = ldo->base + WM831X_LDO_ON_CONTROL;
+ int ret;
+
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ ret = wm831x_set_bits(wm831x, on_reg,
+ WM831X_LDO7_ON_MODE, 0);
+ if (ret < 0)
+ return ret;
+ break;
+
+ case REGULATOR_MODE_IDLE:
+ ret = wm831x_set_bits(wm831x, ctrl_reg,
+ WM831X_LDO7_ON_MODE,
+ WM831X_LDO7_ON_MODE);
+ if (ret < 0)
+ return ret;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int wm831x_aldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (!(ret & mask))
+ return REGULATOR_STATUS_OFF;
+
+ /* Is it reporting under voltage? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_UV_STATUS);
+ if (ret & mask)
+ return REGULATOR_STATUS_ERROR;
+
+ ret = wm831x_aldo_get_mode(rdev);
+ if (ret < 0)
+ return ret;
+ else
+ return regulator_mode_to_status(ret);
+}
+
+static struct regulator_ops wm831x_aldo_ops = {
+ .list_voltage = wm831x_aldo_list_voltage,
+ .get_voltage = wm831x_aldo_get_voltage,
+ .set_voltage = wm831x_aldo_set_voltage,
+ .set_suspend_voltage = wm831x_aldo_set_suspend_voltage,
+ .get_mode = wm831x_aldo_get_mode,
+ .set_mode = wm831x_aldo_set_mode,
+ .get_status = wm831x_aldo_get_status,
+
+ .is_enabled = wm831x_ldo_is_enabled,
+ .enable = wm831x_ldo_enable,
+ .disable = wm831x_ldo_disable,
+};
+
+static __devinit int wm831x_aldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->ldo);
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret, irq;
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ if (pdata == NULL || pdata->ldo[id] == NULL)
+ return -ENODEV;
+
+ ldo = kzalloc(sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (ldo == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = WM831X_ALDO_MAX_SELECTOR + 1;
+ ldo->desc.ops = &wm831x_aldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+
+ ldo->regulator = regulator_register(&ldo->desc, &pdev->dev,
+ pdata->ldo[id], ldo);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ irq = platform_get_irq_byname(pdev, "UV");
+ ret = wm831x_request_irq(wm831x, irq, wm831x_ldo_uv_irq,
+ IRQF_TRIGGER_RISING, ldo->name,
+ ldo);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request UV IRQ %d: %d\n",
+ irq, ret);
+ goto err_regulator;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err_regulator:
+ regulator_unregister(ldo->regulator);
+err:
+ kfree(ldo);
+ return ret;
+}
+
+static __devexit int wm831x_aldo_remove(struct platform_device *pdev)
+{
+ struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
+ struct wm831x *wm831x = ldo->wm831x;
+
+ wm831x_free_irq(wm831x, platform_get_irq_byname(pdev, "UV"), ldo);
+ regulator_unregister(ldo->regulator);
+ kfree(ldo);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_aldo_driver = {
+ .probe = wm831x_aldo_probe,
+ .remove = __devexit_p(wm831x_aldo_remove),
+ .driver = {
+ .name = "wm831x-aldo",
+ },
+};
+
+/*
+ * Alive LDO
+ */
+
+#define WM831X_ALIVE_LDO_MAX_SELECTOR 0xf
+
+static int wm831x_alive_ldo_list_voltage(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+ /* 0.8-1.55V in 50mV steps */
+ if (selector <= WM831X_ALIVE_LDO_MAX_SELECTOR)
+ return 800000 + (selector * 50000);
+ return -EINVAL;
+}
+
+static int wm831x_alive_ldo_set_voltage_int(struct regulator_dev *rdev,
+ int reg,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int vsel, ret;
+
+ vsel = (min_uV - 800000) / 50000;
+
+ ret = wm831x_alive_ldo_list_voltage(rdev, vsel);
+ if (ret < 0)
+ return ret;
+ if (ret < min_uV || ret > max_uV)
+ return -EINVAL;
+
+ return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, vsel);
+}
+
+static int wm831x_alive_ldo_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
+
+ return wm831x_alive_ldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+}
+
+static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev,
+ int uV)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ int reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL;
+
+ return wm831x_alive_ldo_set_voltage_int(rdev, reg, uV, uV);
+}
+
+static int wm831x_alive_ldo_get_voltage(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
+ int ret;
+
+ ret = wm831x_reg_read(wm831x, reg);
+ if (ret < 0)
+ return ret;
+
+ ret &= WM831X_LDO11_ON_VSEL_MASK;
+
+ return wm831x_alive_ldo_list_voltage(rdev, ret);
+}
+
+static int wm831x_alive_ldo_get_status(struct regulator_dev *rdev)
+{
+ struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
+ struct wm831x *wm831x = ldo->wm831x;
+ int mask = 1 << rdev_get_id(rdev);
+ int ret;
+
+ /* Is the regulator on? */
+ ret = wm831x_reg_read(wm831x, WM831X_LDO_STATUS);
+ if (ret < 0)
+ return ret;
+ if (ret & mask)
+ return REGULATOR_STATUS_ON;
+ else
+ return REGULATOR_STATUS_OFF;
+}
+
+static struct regulator_ops wm831x_alive_ldo_ops = {
+ .list_voltage = wm831x_alive_ldo_list_voltage,
+ .get_voltage = wm831x_alive_ldo_get_voltage,
+ .set_voltage = wm831x_alive_ldo_set_voltage,
+ .set_suspend_voltage = wm831x_alive_ldo_set_suspend_voltage,
+ .get_status = wm831x_alive_ldo_get_status,
+
+ .is_enabled = wm831x_ldo_is_enabled,
+ .enable = wm831x_ldo_enable,
+ .disable = wm831x_ldo_disable,
+};
+
+static __devinit int wm831x_alive_ldo_probe(struct platform_device *pdev)
+{
+ struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent);
+ struct wm831x_pdata *pdata = wm831x->dev->platform_data;
+ int id = pdev->id % ARRAY_SIZE(pdata->ldo);
+ struct wm831x_ldo *ldo;
+ struct resource *res;
+ int ret;
+
+ dev_dbg(&pdev->dev, "Probing LDO%d\n", id + 1);
+
+ if (pdata == NULL || pdata->ldo[id] == NULL)
+ return -ENODEV;
+
+ ldo = kzalloc(sizeof(struct wm831x_ldo), GFP_KERNEL);
+ if (ldo == NULL) {
+ dev_err(&pdev->dev, "Unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ ldo->wm831x = wm831x;
+
+ res = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "No I/O resource\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ ldo->base = res->start;
+
+ snprintf(ldo->name, sizeof(ldo->name), "LDO%d", id + 1);
+ ldo->desc.name = ldo->name;
+ ldo->desc.id = id;
+ ldo->desc.type = REGULATOR_VOLTAGE;
+ ldo->desc.n_voltages = WM831X_ALIVE_LDO_MAX_SELECTOR + 1;
+ ldo->desc.ops = &wm831x_alive_ldo_ops;
+ ldo->desc.owner = THIS_MODULE;
+
+ ldo->regulator = regulator_register(&ldo->desc, &pdev->dev,
+ pdata->ldo[id], ldo);
+ if (IS_ERR(ldo->regulator)) {
+ ret = PTR_ERR(ldo->regulator);
+ dev_err(wm831x->dev, "Failed to register LDO%d: %d\n",
+ id + 1, ret);
+ goto err;
+ }
+
+ platform_set_drvdata(pdev, ldo);
+
+ return 0;
+
+err:
+ kfree(ldo);
+ return ret;
+}
+
+static __devexit int wm831x_alive_ldo_remove(struct platform_device *pdev)
+{
+ struct wm831x_ldo *ldo = platform_get_drvdata(pdev);
+
+ regulator_unregister(ldo->regulator);
+ kfree(ldo);
+
+ return 0;
+}
+
+static struct platform_driver wm831x_alive_ldo_driver = {
+ .probe = wm831x_alive_ldo_probe,
+ .remove = __devexit_p(wm831x_alive_ldo_remove),
+ .driver = {
+ .name = "wm831x-alive-ldo",
+ },
+};
+
+static int __init wm831x_ldo_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&wm831x_gp_ldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x GP LDO driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_aldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x ALDO driver: %d\n", ret);
+
+ ret = platform_driver_register(&wm831x_alive_ldo_driver);
+ if (ret != 0)
+ pr_err("Failed to register WM831x alive LDO driver: %d\n",
+ ret);
+
+ return 0;
+}
+subsys_initcall(wm831x_ldo_init);
+
+static void __exit wm831x_ldo_exit(void)
+{
+ platform_driver_unregister(&wm831x_alive_ldo_driver);
+ platform_driver_unregister(&wm831x_aldo_driver);
+ platform_driver_unregister(&wm831x_gp_ldo_driver);
+}
+module_exit(wm831x_ldo_exit);
+
+/* Module information */
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("WM831x LDO driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:wm831x-ldo");
+MODULE_ALIAS("platform:wm831x-aldo");
+MODULE_ALIAS("platform:wm831x-aliveldo");
diff --git a/drivers/regulator/wm8350-regulator.c b/drivers/regulator/wm8350-regulator.c
index 17a00b0fafd..768bd0e5b48 100644
--- a/drivers/regulator/wm8350-regulator.c
+++ b/drivers/regulator/wm8350-regulator.c
@@ -1419,6 +1419,8 @@ int wm8350_register_regulator(struct wm8350 *wm8350, int reg,
{
struct platform_device *pdev;
int ret;
+ if (reg < 0 || reg >= NUM_WM8350_REGULATORS)
+ return -EINVAL;
if (wm8350->pmic.pdev[reg])
return -EBUSY;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-29 23:21:07 +0000