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authorLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:49:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-23 18:49:36 -0800
commit0ba3307a8ec35252f7b1e222e32889a6f3d9ceb3 (patch)
tree26126ed7a2080a706f0488c215549fc9f5f76a59 /drivers/clk
parent903a9f77d1d00c8621bc37afd959ac45a4b3ebec (diff)
parentcd2f43a1f7400a74a084094502f70df2e169c6e8 (diff)
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM driver updates from Olof Johansson: "Updates of SoC-near drivers and other driver updates that makes more sense to take through our tree. The largest part of this is a conversion of device registration for some renesas shmobile/sh devices over to use resources. This has required coordination with the corresponding arch/sh changes, and we've agreed to merge the arch/sh changes through our tree. Added in this branch is support for Trusted Foundations secure firmware, which is what is used on many of the commercial Nvidia Tegra products that are in the market, including the Nvidia Shield. The code is local to arch/arm at this time since it's uncertain whether it will be shared with arm64 longer-term, if needed we will refactor later. A couple of new RTC drivers used on ARM boards, merged through our tree on request by the RTC maintainer. ... plus a bunch of smaller updates across the board, gpio conversions for davinci, etc" * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits) watchdog: davinci: rename platform driver to davinci-wdt tty: serial: Limit msm_serial_hs driver to platforms that use it mmc: msm_sdcc: Limit driver to platforms that use it usb: phy: msm: Move mach dependent code to platform data clk: versatile: fixup IM-PD1 clock implementation clk: versatile: pass a name to ICST clock provider ARM: integrator: pass parent IRQ to the SIC irqchip: versatile FPGA: support cascaded interrupts from DT gpio: davinci: don't create irq_domain in case of unbanked irqs gpio: davinci: use chained_irq_enter/chained_irq_exit API gpio: davinci: add OF support gpio: davinci: remove unused variable intc_irq_num gpio: davinci: convert to use irqdomain support. gpio: introduce GPIO_DAVINCI kconfig option gpio: davinci: get rid of DAVINCI_N_GPIO gpio: davinci: use {readl|writel}_relaxed() instead of __raw_* serial: sh-sci: Add OF support serial: sh-sci: Add device tree bindings documentation serial: sh-sci: Remove platform data mapbase and irqs fields serial: sh-sci: Remove platform data scbrr_algo_id field ...
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/versatile/clk-icst.c3
-rw-r--r--drivers/clk/versatile/clk-icst.h1
-rw-r--r--drivers/clk/versatile/clk-impd1.c88
-rw-r--r--drivers/clk/versatile/clk-integrator.c2
-rw-r--r--drivers/clk/versatile/clk-realview.c6
5 files changed, 80 insertions, 20 deletions
diff --git a/drivers/clk/versatile/clk-icst.c b/drivers/clk/versatile/clk-icst.c
index f5e4c21b301f..8cbfcf88fae3 100644
--- a/drivers/clk/versatile/clk-icst.c
+++ b/drivers/clk/versatile/clk-icst.c
@@ -119,6 +119,7 @@ static const struct clk_ops icst_ops = {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
+ const char *name,
void __iomem *base)
{
struct clk *clk;
@@ -130,7 +131,7 @@ struct clk *icst_clk_register(struct device *dev,
pr_err("could not allocate ICST clock!\n");
return ERR_PTR(-ENOMEM);
}
- init.name = "icst";
+ init.name = name;
init.ops = &icst_ops;
init.flags = CLK_IS_ROOT;
init.parent_names = NULL;
diff --git a/drivers/clk/versatile/clk-icst.h b/drivers/clk/versatile/clk-icst.h
index dad51b6ffd00..be99dd0da785 100644
--- a/drivers/clk/versatile/clk-icst.h
+++ b/drivers/clk/versatile/clk-icst.h
@@ -15,4 +15,5 @@ struct clk_icst_desc {
struct clk *icst_clk_register(struct device *dev,
const struct clk_icst_desc *desc,
+ const char *name,
void __iomem *base);
diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 369139af2a3b..844f8d711a12 100644
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -1,6 +1,6 @@
/*
* Clock driver for the ARM Integrator/IM-PD1 board
- * Copyright (C) 2012 Linus Walleij
+ * Copyright (C) 2012-2013 Linus Walleij
*
* 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
@@ -18,20 +18,28 @@
#include "clk-icst.h"
struct impd1_clk {
- struct clk *vcoclk;
+ char *vco1name;
+ struct clk *vco1clk;
+ char *vco2name;
+ struct clk *vco2clk;
+ struct clk *mmciclk;
+ char *uartname;
struct clk *uartclk;
- struct clk_lookup *clks[3];
+ char *spiname;
+ struct clk *spiclk;
+ char *scname;
+ struct clk *scclk;
+ struct clk_lookup *clks[6];
};
+/* One entry for each connected IM-PD1 LM */
static struct impd1_clk impd1_clks[4];
/*
- * There are two VCO's on the IM-PD1 but only one is used by the
- * kernel, that is why we are only implementing the control of
- * IMPD1_OSC1 here.
+ * There are two VCO's on the IM-PD1
*/
-static const struct icst_params impd1_vco_params = {
+static const struct icst_params impd1_vco1_params = {
.ref = 24000000, /* 24 MHz */
.vco_max = ICST525_VCO_MAX_3V,
.vco_min = ICST525_VCO_MIN,
@@ -44,11 +52,29 @@ static const struct icst_params impd1_vco_params = {
};
static const struct clk_icst_desc impd1_icst1_desc = {
- .params = &impd1_vco_params,
+ .params = &impd1_vco1_params,
.vco_offset = IMPD1_OSC1,
.lock_offset = IMPD1_LOCK,
};
+static const struct icst_params impd1_vco2_params = {
+ .ref = 24000000, /* 24 MHz */
+ .vco_max = ICST525_VCO_MAX_3V,
+ .vco_min = ICST525_VCO_MIN,
+ .vd_min = 12,
+ .vd_max = 519,
+ .rd_min = 3,
+ .rd_max = 120,
+ .s2div = icst525_s2div,
+ .idx2s = icst525_idx2s,
+};
+
+static const struct clk_icst_desc impd1_icst2_desc = {
+ .params = &impd1_vco2_params,
+ .vco_offset = IMPD1_OSC2,
+ .lock_offset = IMPD1_LOCK,
+};
+
/**
* integrator_impd1_clk_init() - set up the integrator clock tree
* @base: base address of the logic module (LM)
@@ -66,16 +92,39 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
}
imc = &impd1_clks[id];
- clk = icst_clk_register(NULL, &impd1_icst1_desc, base);
- imc->vcoclk = clk;
+ imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
+ clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, base);
+ imc->vco1clk = clk;
imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
- /* UART reference clock */
- clk = clk_register_fixed_rate(NULL, "uartclk", NULL, CLK_IS_ROOT,
- 14745600);
+ /* VCO2 is also called "CLK2" */
+ imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
+ clk = icst_clk_register(NULL, &impd1_icst2_desc, imc->vco2name, base);
+ imc->vco2clk = clk;
+
+ /* MMCI uses CLK2 right off */
+ imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
+
+ /* UART reference clock divides CLK2 by a fixed factor 4 */
+ imc->uartname = kasprintf(GFP_KERNEL, "lm%x-uartclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->uartname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 4);
imc->uartclk = clk;
- imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
- imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+ imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
+ imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+
+ /* SPI PL022 clock divides CLK2 by a fixed factor 64 */
+ imc->spiname = kasprintf(GFP_KERNEL, "lm%x-spiclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->spiname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 64);
+ imc->clks[4] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+
+ /* Smart Card clock divides CLK2 by a fixed factor 4 */
+ imc->scname = kasprintf(GFP_KERNEL, "lm%x-scclk", id);
+ clk = clk_register_fixed_factor(NULL, imc->scname, imc->vco2name,
+ CLK_IGNORE_UNUSED, 1, 4);
+ imc->scclk = clk;
+ imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
clkdev_add(imc->clks[i]);
@@ -92,6 +141,13 @@ void integrator_impd1_clk_exit(unsigned int id)
for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
clkdev_drop(imc->clks[i]);
+ clk_unregister(imc->spiclk);
clk_unregister(imc->uartclk);
- clk_unregister(imc->vcoclk);
+ clk_unregister(imc->vco2clk);
+ clk_unregister(imc->vco1clk);
+ kfree(imc->scname);
+ kfree(imc->spiname);
+ kfree(imc->uartname);
+ kfree(imc->vco2name);
+ kfree(imc->vco1name);
}
diff --git a/drivers/clk/versatile/clk-integrator.c b/drivers/clk/versatile/clk-integrator.c
index 08593b4ee2c9..bda8967e09c2 100644
--- a/drivers/clk/versatile/clk-integrator.c
+++ b/drivers/clk/versatile/clk-integrator.c
@@ -78,7 +78,7 @@ void __init integrator_clk_init(bool is_cp)
clk_register_clkdev(clk, NULL, "sp804");
/* ICST VCO clock used on the Integrator/CP CLCD */
- clk = icst_clk_register(NULL, &cp_icst_desc,
+ clk = icst_clk_register(NULL, &cp_icst_desc, "icst",
__io_address(INTEGRATOR_HDR_BASE));
clk_register_clkdev(clk, NULL, "clcd");
}
diff --git a/drivers/clk/versatile/clk-realview.c b/drivers/clk/versatile/clk-realview.c
index cda07e70a408..747e7b31117c 100644
--- a/drivers/clk/versatile/clk-realview.c
+++ b/drivers/clk/versatile/clk-realview.c
@@ -84,9 +84,11 @@ void __init realview_clk_init(void __iomem *sysbase, bool is_pb1176)
/* ICST VCO clock */
if (is_pb1176)
- clk = icst_clk_register(NULL, &realview_osc0_desc, sysbase);
+ clk = icst_clk_register(NULL, &realview_osc0_desc,
+ "osc0", sysbase);
else
- clk = icst_clk_register(NULL, &realview_osc4_desc, sysbase);
+ clk = icst_clk_register(NULL, &realview_osc4_desc,
+ "osc4", sysbase);
clk_register_clkdev(clk, NULL, "dev:clcd");
clk_register_clkdev(clk, NULL, "issp:clcd");