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-rw-r--r--arch/arm/Kconfig6
-rw-r--r--arch/arm/common/vic.c8
-rw-r--r--arch/arm/kernel/signal.c6
-rw-r--r--arch/arm/mach-pxa/tosa-bt.c30
-rw-r--r--arch/arm/mach-pxa/tosa.c1
-rw-r--r--arch/arm/mach-s3c2410/usb-simtec.c1
-rw-r--r--arch/arm/mach-s3c2442/Kconfig12
-rw-r--r--arch/arm/mach-s3c2442/Makefile2
-rw-r--r--arch/arm/mach-s3c2442/include/mach/gta02.h84
-rw-r--r--arch/arm/mach-s3c2442/mach-gta02.c646
-rw-r--r--arch/arm/plat-s3c/Makefile1
-rw-r--r--arch/arm/plat-s3c/dev-audio.c68
-rw-r--r--arch/arm/plat-s3c/include/plat/devs.h5
-rw-r--r--arch/arm/plat-s3c64xx/Makefile1
-rw-r--r--arch/arm/plat-s3c64xx/cpufreq.c262
15 files changed, 1109 insertions, 24 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 29475101a7b..aef63c8e3d2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1241,7 +1241,7 @@ endmenu
menu "CPU Power Management"
-if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_PXA)
+if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_PXA || ARCH_S3C64XX)
source "drivers/cpufreq/Kconfig"
@@ -1272,6 +1272,10 @@ config CPU_FREQ_PXA
default y
select CPU_FREQ_DEFAULT_GOV_USERSPACE
+config CPU_FREQ_S3C64XX
+ bool "CPUfreq support for Samsung S3C64XX CPUs"
+ depends on CPU_FREQ && CPU_S3C6410
+
endif
source "drivers/cpuidle/Kconfig"
diff --git a/arch/arm/common/vic.c b/arch/arm/common/vic.c
index 887c6eb3a18..6ed89836e90 100644
--- a/arch/arm/common/vic.c
+++ b/arch/arm/common/vic.c
@@ -229,14 +229,18 @@ static int vic_set_wake(unsigned int irq, unsigned int on)
{
struct vic_device *v = vic_from_irq(irq);
unsigned int off = irq & 31;
+ u32 bit = 1 << off;
if (!v)
return -EINVAL;
+ if (!(bit & v->resume_sources))
+ return -EINVAL;
+
if (on)
- v->resume_irqs |= 1 << off;
+ v->resume_irqs |= bit;
else
- v->resume_irqs &= ~(1 << off);
+ v->resume_irqs &= ~bit;
return 0;
}
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 442b87476f9..93bb4247b7e 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -536,7 +536,7 @@ setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
return err;
}
-static inline void restart_syscall(struct pt_regs *regs)
+static inline void setup_syscall_restart(struct pt_regs *regs)
{
regs->ARM_r0 = regs->ARM_ORIG_r0;
regs->ARM_pc -= thumb_mode(regs) ? 2 : 4;
@@ -571,7 +571,7 @@ handle_signal(unsigned long sig, struct k_sigaction *ka,
}
/* fallthrough */
case -ERESTARTNOINTR:
- restart_syscall(regs);
+ setup_syscall_restart(regs);
}
}
@@ -695,7 +695,7 @@ static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall)
if (regs->ARM_r0 == -ERESTARTNOHAND ||
regs->ARM_r0 == -ERESTARTSYS ||
regs->ARM_r0 == -ERESTARTNOINTR) {
- restart_syscall(regs);
+ setup_syscall_restart(regs);
}
}
single_step_set(current);
diff --git a/arch/arm/mach-pxa/tosa-bt.c b/arch/arm/mach-pxa/tosa-bt.c
index fb0294bd431..c31e601eb49 100644
--- a/arch/arm/mach-pxa/tosa-bt.c
+++ b/arch/arm/mach-pxa/tosa-bt.c
@@ -35,21 +35,25 @@ static void tosa_bt_off(struct tosa_bt_data *data)
gpio_set_value(data->gpio_reset, 0);
}
-static int tosa_bt_toggle_radio(void *data, enum rfkill_state state)
+static int tosa_bt_set_block(void *data, bool blocked)
{
- pr_info("BT_RADIO going: %s\n",
- state == RFKILL_STATE_ON ? "on" : "off");
+ pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on");
- if (state == RFKILL_STATE_ON) {
+ if (!blocked) {
pr_info("TOSA_BT: going ON\n");
tosa_bt_on(data);
} else {
pr_info("TOSA_BT: going OFF\n");
tosa_bt_off(data);
}
+
return 0;
}
+static const struct rfkill_ops tosa_bt_rfkill_ops = {
+ .set_block = tosa_bt_set_block,
+};
+
static int tosa_bt_probe(struct platform_device *dev)
{
int rc;
@@ -70,18 +74,14 @@ static int tosa_bt_probe(struct platform_device *dev)
if (rc)
goto err_pwr_dir;
- rfk = rfkill_allocate(&dev->dev, RFKILL_TYPE_BLUETOOTH);
+ rfk = rfkill_alloc("tosa-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH,
+ &tosa_bt_rfkill_ops, data);
if (!rfk) {
rc = -ENOMEM;
goto err_rfk_alloc;
}
- rfk->name = "tosa-bt";
- rfk->toggle_radio = tosa_bt_toggle_radio;
- rfk->data = data;
-#ifdef CONFIG_RFKILL_LEDS
- rfk->led_trigger.name = "tosa-bt";
-#endif
+ rfkill_set_led_trigger_name(rfk, "tosa-bt");
rc = rfkill_register(rfk);
if (rc)
@@ -92,9 +92,7 @@ static int tosa_bt_probe(struct platform_device *dev)
return 0;
err_rfkill:
- if (rfk)
- rfkill_free(rfk);
- rfk = NULL;
+ rfkill_destroy(rfk);
err_rfk_alloc:
tosa_bt_off(data);
err_pwr_dir:
@@ -113,8 +111,10 @@ static int __devexit tosa_bt_remove(struct platform_device *dev)
platform_set_drvdata(dev, NULL);
- if (rfk)
+ if (rfk) {
rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ }
rfk = NULL;
tosa_bt_off(data);
diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c
index 168267a5dfb..117ad5920e5 100644
--- a/arch/arm/mach-pxa/tosa.c
+++ b/arch/arm/mach-pxa/tosa.c
@@ -31,7 +31,6 @@
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>
-#include <linux/rfkill.h>
#include <linux/spi/spi.h>
#include <asm/setup.h>
diff --git a/arch/arm/mach-s3c2410/usb-simtec.c b/arch/arm/mach-s3c2410/usb-simtec.c
index 6cd9377ddb8..50e25fc5f8a 100644
--- a/arch/arm/mach-s3c2410/usb-simtec.c
+++ b/arch/arm/mach-s3c2410/usb-simtec.c
@@ -22,7 +22,6 @@
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/device.h>
-#include <linux/gpio.h>
#include <linux/io.h>
#include <asm/mach/arch.h>
diff --git a/arch/arm/mach-s3c2442/Kconfig b/arch/arm/mach-s3c2442/Kconfig
index b289d198020..103e913f225 100644
--- a/arch/arm/mach-s3c2442/Kconfig
+++ b/arch/arm/mach-s3c2442/Kconfig
@@ -24,6 +24,18 @@ config SMDK2440_CPU2442
depends on ARCH_S3C2440
select CPU_S3C2442
+config MACH_NEO1973_GTA02
+ bool "Openmoko GTA02 / Freerunner phone"
+ select CPU_S3C2442
+ select MFD_PCF50633
+ select PCF50633_GPIO
+ select I2C
+ select POWER_SUPPLY
+ select MACH_NEO1973
+ select S3C2410_PWM
+ help
+ Say Y here if you are using the Openmoko GTA02 / Freerunner GSM Phone
+
endmenu
diff --git a/arch/arm/mach-s3c2442/Makefile b/arch/arm/mach-s3c2442/Makefile
index 2a909c6c579..2a19113a576 100644
--- a/arch/arm/mach-s3c2442/Makefile
+++ b/arch/arm/mach-s3c2442/Makefile
@@ -12,5 +12,7 @@ obj- :=
obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
obj-$(CONFIG_CPU_S3C2442) += clock.o
+obj-$(CONFIG_MACH_NEO1973_GTA02) += mach-gta02.o
+
# Machine support
diff --git a/arch/arm/mach-s3c2442/include/mach/gta02.h b/arch/arm/mach-s3c2442/include/mach/gta02.h
new file mode 100644
index 00000000000..953331d8d56
--- /dev/null
+++ b/arch/arm/mach-s3c2442/include/mach/gta02.h
@@ -0,0 +1,84 @@
+#ifndef _GTA02_H
+#define _GTA02_H
+
+#include <mach/regs-gpio.h>
+
+/* Different hardware revisions, passed in ATAG_REVISION by u-boot */
+#define GTA02v1_SYSTEM_REV 0x00000310
+#define GTA02v2_SYSTEM_REV 0x00000320
+#define GTA02v3_SYSTEM_REV 0x00000330
+#define GTA02v4_SYSTEM_REV 0x00000340
+#define GTA02v5_SYSTEM_REV 0x00000350
+/* since A7 is basically same as A6, we use A6 PCB ID */
+#define GTA02v6_SYSTEM_REV 0x00000360
+
+#define GTA02_GPIO_n3DL_GSM S3C2410_GPA(13) /* v1 + v2 + v3 only */
+
+#define GTA02_GPIO_PWR_LED1 S3C2410_GPB(0)
+#define GTA02_GPIO_PWR_LED2 S3C2410_GPB(1)
+#define GTA02_GPIO_AUX_LED S3C2410_GPB(2)
+#define GTA02_GPIO_VIBRATOR_ON S3C2410_GPB(3)
+#define GTA02_GPIO_MODEM_RST S3C2410_GPB(5)
+#define GTA02_GPIO_BT_EN S3C2410_GPB(6)
+#define GTA02_GPIO_MODEM_ON S3C2410_GPB(7)
+#define GTA02_GPIO_EXTINT8 S3C2410_GPB(8)
+#define GTA02_GPIO_USB_PULLUP S3C2410_GPB(9)
+
+#define GTA02_GPIO_PIO5 S3C2410_GPC(5) /* v3 + v4 only */
+
+#define GTA02v3_GPIO_nG1_CS S3C2410_GPD(12) /* v3 + v4 only */
+#define GTA02v3_GPIO_nG2_CS S3C2410_GPD(13) /* v3 + v4 only */
+#define GTA02v5_GPIO_HDQ S3C2410_GPD(14) /* v5 + */
+
+#define GTA02_GPIO_nG1_INT S3C2410_GPF(0)
+#define GTA02_GPIO_IO1 S3C2410_GPF(1)
+#define GTA02_GPIO_PIO_2 S3C2410_GPF(2) /* v2 + v3 + v4 only */
+#define GTA02_GPIO_JACK_INSERT S3C2410_GPF(4)
+#define GTA02_GPIO_WLAN_GPIO1 S3C2410_GPF(5) /* v2 + v3 + v4 only */
+#define GTA02_GPIO_AUX_KEY S3C2410_GPF(6)
+#define GTA02_GPIO_HOLD_KEY S3C2410_GPF(7)
+
+#define GTA02_GPIO_3D_IRQ S3C2410_GPG(4)
+#define GTA02v2_GPIO_nG2_INT S3C2410_GPG(8) /* v2 + v3 + v4 only */
+#define GTA02v3_GPIO_nUSB_OC S3C2410_GPG(9) /* v3 + v4 only */
+#define GTA02v3_GPIO_nUSB_FLT S3C2410_GPG(10) /* v3 + v4 only */
+#define GTA02v3_GPIO_nGSM_OC S3C2410_GPG(11) /* v3 + v4 only */
+
+#define GTA02_GPIO_AMP_SHUT S3C2440_GPJ1 /* v2 + v3 + v4 only */
+#define GTA02v1_GPIO_WLAN_GPIO10 S3C2440_GPJ2
+#define GTA02_GPIO_HP_IN S3C2440_GPJ2 /* v2 + v3 + v4 only */
+#define GTA02_GPIO_INT0 S3C2440_GPJ3 /* v2 + v3 + v4 only */
+#define GTA02_GPIO_nGSM_EN S3C2440_GPJ4
+#define GTA02_GPIO_3D_RESET S3C2440_GPJ5
+#define GTA02_GPIO_nDL_GSM S3C2440_GPJ6 /* v4 + v5 only */
+#define GTA02_GPIO_WLAN_GPIO0 S3C2440_GPJ7
+#define GTA02v1_GPIO_BAT_ID S3C2440_GPJ8
+#define GTA02_GPIO_KEEPACT S3C2440_GPJ8
+#define GTA02v1_GPIO_HP_IN S3C2440_GPJ10
+#define GTA02_CHIP_PWD S3C2440_GPJ11 /* v2 + v3 + v4 only */
+#define GTA02_GPIO_nWLAN_RESET S3C2440_GPJ12 /* v2 + v3 + v4 only */
+
+#define GTA02_IRQ_GSENSOR_1 IRQ_EINT0
+#define GTA02_IRQ_MODEM IRQ_EINT1
+#define GTA02_IRQ_PIO_2 IRQ_EINT2 /* v2 + v3 + v4 only */
+#define GTA02_IRQ_nJACK_INSERT IRQ_EINT4
+#define GTA02_IRQ_WLAN_GPIO1 IRQ_EINT5
+#define GTA02_IRQ_AUX IRQ_EINT6
+#define GTA02_IRQ_nHOLD IRQ_EINT7
+#define GTA02_IRQ_PCF50633 IRQ_EINT9
+#define GTA02_IRQ_3D IRQ_EINT12
+#define GTA02_IRQ_GSENSOR_2 IRQ_EINT16 /* v2 + v3 + v4 only */
+#define GTA02v3_IRQ_nUSB_OC IRQ_EINT17 /* v3 + v4 only */
+#define GTA02v3_IRQ_nUSB_FLT IRQ_EINT18 /* v3 + v4 only */
+#define GTA02v3_IRQ_nGSM_OC IRQ_EINT19 /* v3 + v4 only */
+
+/* returns 00 000 on GTA02 A5 and earlier, A6 returns 01 001 */
+#define GTA02_PCB_ID1_0 S3C2410_GPC(13)
+#define GTA02_PCB_ID1_1 S3C2410_GPC(15)
+#define GTA02_PCB_ID1_2 S3C2410_GPD(0)
+#define GTA02_PCB_ID2_0 S3C2410_GPD(3)
+#define GTA02_PCB_ID2_1 S3C2410_GPD(4)
+
+int gta02_get_pcb_revision(void);
+
+#endif /* _GTA02_H */
diff --git a/arch/arm/mach-s3c2442/mach-gta02.c b/arch/arm/mach-s3c2442/mach-gta02.c
new file mode 100644
index 00000000000..e23b581aa0e
--- /dev/null
+++ b/arch/arm/mach-s3c2442/mach-gta02.c
@@ -0,0 +1,646 @@
+/*
+ * linux/arch/arm/mach-s3c2442/mach-gta02.c
+ *
+ * S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
+ *
+ * Copyright (C) 2006-2009 by Openmoko, Inc.
+ * Authors: Harald Welte <laforge@openmoko.org>
+ * Andy Green <andy@openmoko.org>
+ * Werner Almesberger <werner@openmoko.org>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/gpio.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <linux/serial_core.h>
+#include <linux/spi/spi.h>
+
+#include <linux/mmc/host.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/io.h>
+
+#include <linux/i2c.h>
+#include <linux/backlight.h>
+#include <linux/regulator/machine.h>
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/mbc.h>
+#include <linux/mfd/pcf50633/adc.h>
+#include <linux/mfd/pcf50633/gpio.h>
+#include <linux/mfd/pcf50633/pmic.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include <mach/regs-irq.h>
+#include <mach/regs-gpio.h>
+#include <mach/regs-gpioj.h>
+#include <mach/fb.h>
+
+#include <mach/spi.h>
+#include <mach/spi-gpio.h>
+#include <plat/usb-control.h>
+#include <mach/regs-mem.h>
+#include <mach/hardware.h>
+
+#include <mach/gta02.h>
+
+#include <plat/regs-serial.h>
+#include <plat/nand.h>
+#include <plat/devs.h>
+#include <plat/cpu.h>
+#include <plat/pm.h>
+#include <plat/udc.h>
+#include <plat/gpio-cfg.h>
+#include <plat/iic.h>
+
+static struct pcf50633 *gta02_pcf;
+
+/*
+ * This gets called every 1ms when we paniced.
+ */
+
+static long gta02_panic_blink(long count)
+{
+ long delay = 0;
+ static long last_blink;
+ static char led;
+
+ /* Fast blink: 200ms period. */
+ if (count - last_blink < 100)
+ return 0;
+
+ led ^= 1;
+ gpio_direction_output(GTA02_GPIO_AUX_LED, led);
+
+ last_blink = count;
+
+ return delay;
+}
+
+
+static struct map_desc gta02_iodesc[] __initdata = {
+ {
+ .virtual = 0xe0000000,
+ .pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
+ .length = SZ_1M,
+ .type = MT_DEVICE
+ },
+};
+
+#define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN)
+#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
+#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
+
+static struct s3c2410_uartcfg gta02_uartcfgs[] = {
+ [0] = {
+ .hwport = 0,
+ .flags = 0,
+ .ucon = UCON,
+ .ulcon = ULCON,
+ .ufcon = UFCON,
+ },
+ [1] = {
+ .hwport = 1,
+ .flags = 0,
+ .ucon = UCON,
+ .ulcon = ULCON,
+ .ufcon = UFCON,
+ },
+ [2] = {
+ .hwport = 2,
+ .flags = 0,
+ .ucon = UCON,
+ .ulcon = ULCON,
+ .ufcon = UFCON,
+ },
+};
+
+#ifdef CONFIG_CHARGER_PCF50633
+/*
+ * On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
+ * We use this to recognize that we can pull 1A from the USB socket.
+ *
+ * These constants are the measured pcf50633 ADC levels with the 1A
+ * charger / 48K resistor, and with no pulldown resistor.
+ */
+
+#define ADC_NOM_CHG_DETECT_1A 6
+#define ADC_NOM_CHG_DETECT_USB 43
+
+static void
+gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res)
+{
+ int ma;
+
+ /* Interpret charger type */
+ if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
+
+ /*
+ * Sanity - stop GPO driving out now that we have a 1A charger
+ * GPO controls USB Host power generation on GTA02
+ */
+ pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
+
+ ma = 1000;
+ } else
+ ma = 100;
+
+ pcf50633_mbc_usb_curlim_set(pcf, ma);
+}
+
+static struct delayed_work gta02_charger_work;
+static int gta02_usb_vbus_draw;
+
+static void gta02_charger_worker(struct work_struct *work)
+{
+ if (gta02_usb_vbus_draw) {
+ pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
+ return;
+ }
+
+#ifdef CONFIG_PCF50633_ADC
+ pcf50633_adc_async_read(gta02_pcf,
+ PCF50633_ADCC1_MUX_ADCIN1,
+ PCF50633_ADCC1_AVERAGE_16,
+ gta02_configure_pmu_for_charger,
+ NULL);
+#else
+ /*
+ * If the PCF50633 ADC is disabled we fallback to a
+ * 100mA limit for safety.
+ */
+ pcf50633_mbc_usb_curlim_set(pcf, 100);
+#endif
+}
+
+#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
+
+static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
+{
+ if (irq == PCF50633_IRQ_USBINS) {
+ schedule_delayed_work(&gta02_charger_work,
+ GTA02_CHARGER_CONFIGURE_TIMEOUT);
+
+ return;
+ }
+
+ if (irq == PCF50633_IRQ_USBREM) {
+ cancel_delayed_work_sync(&gta02_charger_work);
+ gta02_usb_vbus_draw = 0;
+ }
+}
+
+static void gta02_udc_vbus_draw(unsigned int ma)
+{
+ if (!gta02_pcf)
+ return;
+
+ gta02_usb_vbus_draw = ma;
+
+ schedule_delayed_work(&gta02_charger_work,
+ GTA02_CHARGER_CONFIGURE_TIMEOUT);
+}
+#else /* !CONFIG_CHARGER_PCF50633 */
+#define gta02_pmu_event_callback NULL
+#define gta02_udc_vbus_draw NULL
+#endif
+
+/*
+ * This is called when pc50633 is probed, unfortunately quite late in the
+ * day since it is an I2C bus device. Here we can belatedly define some
+ * platform devices with the advantage that we can mark the pcf50633 as the
+ * parent. This makes them get suspended and resumed with their parent
+ * the pcf50633 still around.
+ */
+
+static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);
+
+
+static char *gta02_batteries[] = {
+ "battery",
+};
+
+struct pcf50633_platform_data gta02_pcf_pdata = {
+ .resumers = {
+ [0] = PCF50633_INT1_USBINS |
+ PCF50633_INT1_USBREM |
+ PCF50633_INT1_ALARM,
+ [1] = PCF50633_INT2_ONKEYF,
+ [2] = PCF50633_INT3_ONKEY1S,
+ [3] = PCF50633_INT4_LOWSYS |
+ PCF50633_INT4_LOWBAT |
+ PCF50633_INT4_HIGHTMP,
+ },
+
+ .batteries = gta02_batteries,
+ .num_batteries = ARRAY_SIZE(gta02_batteries),
+ .reg_init_data = {
+ [PCF50633_REGULATOR_AUTO] = {
+ .constraints = {
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .always_on = 1,
+ .apply_uV = 1,
+ .state_mem = {
+ .enabled = 1,
+ },
+ },
+ },
+ [PCF50633_REGULATOR_DOWN1] = {
+ .constraints = {
+ .min_uV = 1300000,
+ .max_uV = 1600000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .always_on = 1,
+ .apply_uV = 1,
+ },
+ },
+ [PCF50633_REGULATOR_DOWN2] = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ .always_on = 1,
+ .state_mem = {
+ .enabled = 1,
+ },
+ },
+ },
+ [PCF50633_REGULATOR_HCLDO] = {
+ .constraints = {
+ .min_uV = 2000000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
+ .always_on = 1,
+ },
+ },
+ [PCF50633_REGULATOR_LDO1] = {
+ .constraints = {
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ .state_mem = {
+ .enabled = 0,
+ },
+ },
+ },
+ [PCF50633_REGULATOR_LDO2] = {
+ .constraints = {
+ .min_uV = 3300000,
+ .max_uV = 3300000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ },
+ },
+ [PCF50633_REGULATOR_LDO3] = {
+ .constraints = {
+ .min_uV = 3000000,
+ .max_uV = 3000000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ },
+ },
+ [PCF50633_REGULATOR_LDO4] = {
+ .constraints = {
+ .min_uV = 3200000,
+ .max_uV = 3200000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ },
+ },
+ [PCF50633_REGULATOR_LDO5] = {
+ .constraints = {
+ .min_uV = 3000000,
+ .max_uV = 3000000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .apply_uV = 1,
+ .state_mem = {
+ .enabled = 1,
+ },
+ },
+ },
+ [PCF50633_REGULATOR_LDO6] = {
+ .constraints = {
+ .min_uV = 3000000,
+ .max_uV = 3000000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ },
+ },
+ [PCF50633_REGULATOR_MEMLDO] = {
+ .constraints = {
+ .min_uV = 1800000,
+ .max_uV = 1800000,
+ .valid_modes_mask = REGULATOR_MODE_NORMAL,
+ .state_mem = {
+ .enabled = 1,
+ },
+ },
+ },
+
+ },
+ .probe_done = gta02_pmu_attach_child_devices,
+ .mbc_event_callback = gta02_pmu_event_callback,
+};
+
+
+/* NOR Flash. */
+
+#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */
+#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */
+
+static struct physmap_flash_data gta02_nor_flash_data = {
+ .width = 2,
+};
+
+static struct resource gta02_nor_flash_resource = {
+ .start = GTA02_FLASH_BASE,
+ .end = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device gta02_nor_flash = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = &gta02_nor_flash_data,
+ },
+ .resource = &gta02_nor_flash_resource,
+ .num_resources = 1,
+};
+
+
+struct platform_device s3c24xx_pwm_device = {
+ .name = "s3c24xx_pwm",
+ .num_resources = 0,
+};
+
+static struct i2c_board_info gta02_i2c_devs[] __initdata = {
+ {
+ I2C_BOARD_INFO("pcf50633", 0x73),
+ .irq = GTA02_IRQ_PCF50633,
+ .platform_data = &gta02_pcf_pdata,
+ },
+ {
+ I2C_BOARD_INFO("wm8753", 0x1a),
+ },
+};
+
+static struct s3c2410_nand_set gta02_nand_sets[] = {
+ [0] = {
+ /*
+ * This name is also hard-coded in the boot loaders, so
+ * changing it would would require all users to upgrade
+ * their boot loaders, some of which are stored in a NOR
+ * that is considered to be immutable.
+ */
+ .name = "neo1973-nand",
+ .nr_chips = 1,
+ .use_bbt = 1,
+ .force_soft_ecc = 1,
+ },
+};
+
+/*
+ * Choose a set of timings derived from S3C@2442B MCP54
+ * data sheet (K5D2G13ACM-D075 MCP Memory).
+ */
+
+static struct s3c2410_platform_nand gta02_nand_info = {
+ .tacls = 0,
+ .twrph0 = 25,
+ .twrph1 = 15,
+ .nr_sets = ARRAY_SIZE(gta02_nand_sets),
+ .sets = gta02_nand_sets,
+};
+
+
+static void gta02_udc_command(enum s3c2410_udc_cmd_e cmd)
+{
+ switch (cmd) {
+ case S3C2410_UDC_P_ENABLE:
+ pr_debug("%s S3C2410_UDC_P_ENABLE\n", __func__);
+ gpio_direction_output(GTA02_GPIO_USB_PULLUP, 1);
+ break;
+ case S3C2410_UDC_P_DISABLE:
+ pr_debug("%s S3C2410_UDC_P_DISABLE\n", __func__);
+ gpio_direction_output(GTA02_GPIO_USB_PULLUP, 0);
+ break;
+ case S3C2410_UDC_P_RESET:
+ pr_debug("%s S3C2410_UDC_P_RESET\n", __func__);
+ /* FIXME: Do something here. */
+ }
+}
+
+/* Get PMU to set USB current limit accordingly. */
+static struct s3c2410_udc_mach_info gta02_udc_cfg = {
+ .vbus_draw = gta02_udc_vbus_draw,
+ .udc_command = gta02_udc_command,
+
+};
+
+
+
+static void gta02_bl_set_intensity(int intensity)
+{
+ struct pcf50633 *pcf = gta02_pcf;
+ int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
+
+ /* We map 8-bit intensity to 6-bit intensity in hardware. */
+ intensity >>= 2;
+
+ /*
+ * This can happen during, eg, print of panic on blanked console,
+ * but we can't service i2c without interrupts active, so abort.
+ */
+ if (in_atomic()) {
+ printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n");
+ return;
+ }
+
+ old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT);
+ if (intensity == old_intensity)
+ return;
+
+ /* We can't do this anywhere else. */
+ pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5);
+
+ if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3))
+ old_intensity = 0;
+
+ /*
+ * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60)
+ * if seen, you have to re-enable the LED unit.
+ */
+ if (!intensity || !old_intensity)
+ pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0);
+
+ /* Illegal to set LEDOUT to 0. */
+ if (!intensity)
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2);
+ else
+ pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f,
+ intensity);
+
+ if (intensity)
+ pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2);
+
+}
+
+static struct generic_bl_info gta02_bl_info = {
+ .name = "gta02-bl",
+ .max_intensity = 0xff,
+ .default_intensity = 0xff,
+ .set_bl_intensity = gta02_bl_set_intensity,
+};
+
+static struct platform_device gta02_bl_dev = {
+ .name = "generic-bl",
+ .id = 1,
+ .dev = {
+ .platform_data = &gta02_bl_info,
+ },
+};
+
+
+
+/* USB */
+static struct s3c2410_hcd_info gta02_usb_info = {
+ .port[0] = {
+ .flags = S3C_HCDFLG_USED,
+ },
+ .port[1] = {
+ .flags = 0,
+ },
+};
+
+
+static void __init gta02_map_io(void)
+{
+ s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
+ s3c24xx_init_clocks(12000000);
+ s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
+}
+
+
+/* These are the guys that don't need to be children of PMU. */
+
+static struct platform_device *gta02_devices[] __initdata = {
+ &s3c_device_usb,
+ &s3c_device_wdt,
+ &s3c_device_sdi,
+ &s3c_device_usbgadget,
+ &s3c_device_nand,
+ &gta02_nor_flash,
+ &s3c24xx_pwm_device,
+ &s3c_device_iis,
+ &s3c_device_i2c0,
+};
+
+/* These guys DO need to be children of PMU. */
+
+static struct platform_device *gta02_devices_pmu_children[] = {
+ &gta02_bl_dev,
+};
+
+
+/*
+ * This is called when pc50633 is probed, quite late in the day since it is an
+ * I2C bus device. Here we can define platform devices with the advantage that
+ * we can mark the pcf50633 as the parent. This makes them get suspended and
+ * resumed with their parent the pcf50633 still around. All devices whose
+ * operation depends on something from pcf50633 must have this relationship
+ * made explicit like this, or suspend and resume will become an unreliable
+ * hellworld.
+ */
+
+static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
+{
+ int n;
+
+ /* Grab a copy of the now probed PMU pointer. */
+ gta02_pcf = pcf;
+
+ for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
+ gta02_devices_pmu_children[n]->dev.parent = pcf->dev;
+
+ platform_add_devices(gta02_devices_pmu_children,
+ ARRAY_SIZE(gta02_devices_pmu_children));
+}
+
+static void gta02_poweroff(void)
+{
+ pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
+}
+
+static void __init gta02_machine_init(void)
+{
+ /* Set the panic callback to make AUX LED blink at ~5Hz. */
+ panic_blink = gta02_panic_blink;
+
+ s3c_pm_init();
+
+#ifdef CONFIG_CHARGER_PCF50633
+ INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
+#endif
+
+ s3c_device_usb.dev.platform_data = &gta02_usb_info;
+ s3c_device_nand.dev.platform_data = &gta02_nand_info;
+
+ s3c24xx_udc_set_platdata(&gta02_udc_cfg);
+ s3c_i2c0_set_platdata(NULL);
+
+ i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
+
+ platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
+ pm_power_off = gta02_poweroff;
+}
+
+
+MACHINE_START(NEO1973_GTA02, "GTA02")
+ /* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
+ .phys_io = S3C2410_PA_UART,
+ .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
+ .boot_params = S3C2410_SDRAM_PA + 0x100,
+ .map_io = gta02_map_io,
+ .init_irq = s3c24xx_init_irq,
+ .init_machine = gta02_machine_init,
+ .timer = &s3c24xx_timer,
+MACHINE_END
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 610651455a7..74bb7cb5da4 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_S3C_DEV_HSMMC) += dev-hsmmc.o
obj-$(CONFIG_S3C_DEV_HSMMC1) += dev-hsmmc1.o
obj-y += dev-i2c0.o
obj-$(CONFIG_S3C_DEV_I2C1) += dev-i2c1.o
+obj-$(CONFIG_SND_S3C24XX_SOC) += dev-audio.o
obj-$(CONFIG_S3C_DEV_FB) += dev-fb.o
obj-$(CONFIG_S3C_DEV_USB_HOST) += dev-usb.o
obj-$(CONFIG_S3C_DEV_USB_HSOTG) += dev-usb-hsotg.o
diff --git a/arch/arm/plat-s3c/dev-audio.c b/arch/arm/plat-s3c/dev-audio.c
new file mode 100644
index 00000000000..1322beb40dd
--- /dev/null
+++ b/arch/arm/plat-s3c/dev-audio.c
@@ -0,0 +1,68 @@
+/* linux/arch/arm/plat-s3c/dev-audio.c
+ *
+ * Copyright 2009 Wolfson Microelectronics
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/platform_device.h>
+
+#include <mach/irqs.h>
+#include <mach/map.h>
+
+#include <plat/devs.h>
+
+
+static struct resource s3c64xx_iis0_resource[] = {
+ [0] = {
+ .start = S3C64XX_PA_IIS0,
+ .end = S3C64XX_PA_IIS0 + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+struct platform_device s3c64xx_device_iis0 = {
+ .name = "s3c64xx-iis",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(s3c64xx_iis0_resource),
+ .resource = s3c64xx_iis0_resource,
+};
+EXPORT_SYMBOL(s3c64xx_device_iis0);
+
+static struct resource s3c64xx_iis1_resource[] = {
+ [0] = {
+ .start = S3C64XX_PA_IIS1,
+ .end = S3C64XX_PA_IIS1 + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+struct platform_device s3c64xx_device_iis1 = {
+ .name = "s3c64xx-iis",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(s3c64xx_iis1_resource),
+ .resource = s3c64xx_iis1_resource,
+};
+EXPORT_SYMBOL(s3c64xx_device_iis1);
+
+static struct resource s3c64xx_iisv4_resource[] = {
+ [0] = {
+ .start = S3C64XX_PA_IISV4,
+ .end = S3C64XX_PA_IISV4 + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+struct platform_device s3c64xx_device_iisv4 = {
+ .name = "s3c64xx-iis-v4",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(s3c64xx_iisv4_resource),
+ .resource = s3c64xx_iisv4_resource,
+};
+EXPORT_SYMBOL(s3c64xx_device_iisv4);
diff --git a/arch/arm/plat-s3c/include/plat/devs.h b/arch/arm/plat-s3c/include/plat/devs.h
index a0b6768fddc..b5b9c4d46e9 100644
--- a/arch/arm/plat-s3c/include/plat/devs.h
+++ b/arch/arm/plat-s3c/include/plat/devs.h
@@ -24,13 +24,16 @@ extern struct platform_device *s3c24xx_uart_src[];
extern struct platform_device s3c_device_timer[];
+extern struct platform_device s3c64xx_device_iis0;
+extern struct platform_device s3c64xx_device_iis1;
+extern struct platform_device s3c64xx_device_iisv4;
+
extern struct platform_device s3c_device_fb;
extern struct platform_device s3c_device_usb;
extern struct platform_device s3c_device_lcd;
extern struct platform_device s3c_device_wdt;
extern struct platform_device s3c_device_i2c0;
extern struct platform_device s3c_device_i2c1;
-extern struct platform_device s3c_device_iis;
extern struct platform_device s3c_device_rtc;
extern struct platform_device s3c_device_adc;
extern struct platform_device s3c_device_sdi;
diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile
index 2ed5df34f9e..3c8882cd626 100644
--- a/arch/arm/plat-s3c64xx/Makefile
+++ b/arch/arm/plat-s3c64xx/Makefile
@@ -23,6 +23,7 @@ obj-y += gpiolib.o
obj-$(CONFIG_CPU_S3C6400_INIT) += s3c6400-init.o
obj-$(CONFIG_CPU_S3C6400_CLOCK) += s3c6400-clock.o
+obj-$(CONFIG_CPU_FREQ_S3C64XX) += cpufreq.o
# PM support
diff --git a/arch/arm/plat-s3c64xx/cpufreq.c b/arch/arm/plat-s3c64xx/cpufreq.c
new file mode 100644
index 00000000000..e6e0843215d
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/cpufreq.c
@@ -0,0 +1,262 @@
+/* linux/arch/arm/plat-s3c64xx/cpufreq.c
+ *
+ * Copyright 2009 Wolfson Microelectronics plc
+ *
+ * S3C64xx CPUfreq Support
+ *
+ * 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/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/cpufreq.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/regulator/consumer.h>
+
+static struct clk *armclk;
+static struct regulator *vddarm;
+
+#ifdef CONFIG_CPU_S3C6410
+struct s3c64xx_dvfs {
+ unsigned int vddarm_min;
+ unsigned int vddarm_max;
+};
+
+static struct s3c64xx_dvfs s3c64xx_dvfs_table[] = {
+ [0] = { 1000000, 1000000 },
+ [1] = { 1000000, 1050000 },
+ [2] = { 1050000, 1100000 },
+ [3] = { 1050000, 1150000 },
+ [4] = { 1250000, 1350000 },
+};
+
+static struct cpufreq_frequency_table s3c64xx_freq_table[] = {
+ { 0, 66000 },
+ { 0, 133000 },
+ { 1, 222000 },
+ { 1, 266000 },
+ { 2, 333000 },
+ { 2, 400000 },
+ { 3, 532000 },
+ { 3, 533000 },
+ { 4, 667000 },
+ { 0, CPUFREQ_TABLE_END },
+};
+#endif
+
+static int s3c64xx_cpufreq_verify_speed(struct cpufreq_policy *policy)
+{
+ if (policy->cpu != 0)
+ return -EINVAL;
+
+ return cpufreq_frequency_table_verify(policy, s3c64xx_freq_table);
+}
+
+static unsigned int s3c64xx_cpufreq_get_speed(unsigned int cpu)
+{
+ if (cpu != 0)
+ return 0;
+
+ return clk_get_rate(armclk) / 1000;
+}
+
+static int s3c64xx_cpufreq_set_target(struct cpufreq_policy *policy,
+ unsigned int target_freq,
+ unsigned int relation)
+{
+ int ret;
+ unsigned int i;
+ struct cpufreq_freqs freqs;
+ struct s3c64xx_dvfs *dvfs;
+
+ ret = cpufreq_frequency_table_target(policy, s3c64xx_freq_table,
+ target_freq, relation, &i);
+ if (ret != 0)
+ return ret;
+
+ freqs.cpu = 0;
+ freqs.old = clk_get_rate(armclk) / 1000;
+ freqs.new = s3c64xx_freq_table[i].frequency;
+ freqs.flags = 0;
+ dvfs = &s3c64xx_dvfs_table[s3c64xx_freq_table[i].index];
+
+ if (freqs.old == freqs.new)
+ return 0;
+
+ pr_debug("cpufreq: Transition %d-%dkHz\n", freqs.old, freqs.new);
+
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+
+#ifdef CONFIG_REGULATOR
+ if (vddarm && freqs.new > freqs.old) {
+ ret = regulator_set_voltage(vddarm,
+ dvfs->vddarm_min,
+ dvfs->vddarm_max);
+ if (ret != 0) {
+ pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
+ freqs.new, ret);
+ goto err;
+ }
+ }
+#endif
+
+ ret = clk_set_rate(armclk, freqs.new * 1000);
+ if (ret < 0) {
+ pr_err("cpufreq: Failed to set rate %dkHz: %d\n",
+ freqs.new, ret);
+ goto err;
+ }
+
+#ifdef CONFIG_REGULATOR
+ if (vddarm && freqs.new < freqs.old) {
+ ret = regulator_set_voltage(vddarm,
+ dvfs->vddarm_min,
+ dvfs->vddarm_max);
+ if (ret != 0) {
+ pr_err("cpufreq: Failed to set VDDARM for %dkHz: %d\n",
+ freqs.new, ret);
+ goto err_clk;
+ }
+ }
+#endif
+
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+
+ pr_debug("cpufreq: Set actual frequency %lukHz\n",
+ clk_get_rate(armclk) / 1000);
+
+ return 0;
+
+err_clk:
+ if (clk_set_rate(armclk, freqs.old * 1000) < 0)
+ pr_err("Failed to restore original clock rate\n");
+err:
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+
+ return ret;
+}
+
+#ifdef CONFIG_REGULATOR
+static void __init s3c64xx_cpufreq_constrain_voltages(void)
+{
+ int count, v, i, found;
+ struct cpufreq_frequency_table *freq;
+ struct s3c64xx_dvfs *dvfs;
+
+ count = regulator_count_voltages(vddarm);
+ if (count < 0) {
+ pr_err("cpufreq: Unable to check supported voltages\n");
+ return;
+ }
+
+ freq = s3c64xx_freq_table;
+ while (freq->frequency != CPUFREQ_TABLE_END) {
+ if (freq->frequency == CPUFREQ_ENTRY_INVALID)
+ continue;
+
+ dvfs = &s3c64xx_dvfs_table[freq->index];
+ found = 0;
+
+ for (i = 0; i < count; i++) {
+ v = regulator_list_voltage(vddarm, i);
+ if (v >= dvfs->vddarm_min && v <= dvfs->vddarm_max)
+ found = 1;
+ }
+
+ if (!found) {
+ pr_debug("cpufreq: %dkHz unsupported by regulator\n",
+ freq->frequency);
+ freq->frequency = CPUFREQ_ENTRY_INVALID;
+ }
+
+ freq++;
+ }
+}
+#endif
+
+static int __init s3c64xx_cpufreq_driver_init(struct cpufreq_policy *policy)
+{
+ int ret;
+ struct cpufreq_frequency_table *freq;
+
+ if (policy->cpu != 0)
+ return -EINVAL;
+
+ if (s3c64xx_freq_table == NULL) {
+ pr_err("cpufreq: No frequency information for this CPU\n");
+ return -ENODEV;
+ }
+
+ armclk = clk_get(NULL, "armclk");
+ if (IS_ERR(armclk)) {
+ pr_err("cpufreq: Unable to obtain ARMCLK: %ld\n",
+ PTR_ERR(armclk));
+ return PTR_ERR(armclk);
+ }
+
+#ifdef CONFIG_REGULATOR
+ vddarm = regulator_get(NULL, "vddarm");
+ if (IS_ERR(vddarm)) {
+ ret = PTR_ERR(vddarm);
+ pr_err("cpufreq: Failed to obtain VDDARM: %d\n", ret);
+ pr_err("cpufreq: Only frequency scaling available\n");
+ vddarm = NULL;
+ } else {
+ s3c64xx_cpufreq_constrain_voltages();
+ }
+#endif
+
+ freq = s3c64xx_freq_table;
+ while (freq->frequency != CPUFREQ_TABLE_END) {
+ unsigned long r;
+
+ /* Check for frequencies we can generate */
+ r = clk_round_rate(armclk, freq->frequency * 1000);
+ r /= 1000;
+ if (r != freq->frequency)
+ freq->frequency = CPUFREQ_ENTRY_INVALID;
+
+ /* If we have no regulator then assume startup
+ * frequency is the maximum we can support. */
+ if (!vddarm && freq->frequency > s3c64xx_cpufreq_get_speed(0))
+ freq->frequency = CPUFREQ_ENTRY_INVALID;
+
+ freq++;
+ }
+
+ policy->cur = clk_get_rate(armclk) / 1000;
+
+ /* Pick a conservative guess in ns: we'll need ~1 I2C/SPI
+ * write plus clock reprogramming. */
+ policy->cpuinfo.transition_latency = 2 * 1000 * 1000;
+
+ ret = cpufreq_frequency_table_cpuinfo(policy, s3c64xx_freq_table);
+ if (ret != 0) {
+ pr_err("cpufreq: Failed to configure frequency table: %d\n",
+ ret);
+ regulator_put(vddarm);
+ clk_put(armclk);
+ }
+
+ return ret;
+}
+
+static struct cpufreq_driver s3c64xx_cpufreq_driver = {
+ .owner = THIS_MODULE,
+ .flags = 0,
+ .verify = s3c64xx_cpufreq_verify_speed,
+ .target = s3c64xx_cpufreq_set_target,
+ .get = s3c64xx_cpufreq_get_speed,
+ .init = s3c64xx_cpufreq_driver_init,
+ .name = "s3c",
+};
+
+static int __init s3c64xx_cpufreq_init(void)
+{
+ return cpufreq_register_driver(&s3c64xx_cpufreq_driver);
+}
+module_init(s3c64xx_cpufreq_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 03:57:34 +0000