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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:41:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:41:24 -0700
commit34800598b2eebe061445216473b1e4c2ff5cba99 (patch)
treea6d0eb6fe45d9480888d7ddb34840e172ed80e56 /arch/arm/mach-sa1100
parent46b407ca4a6149c8d27fcec1881d4f184bec7c77 (diff)
parent511f1cb6d426938fabf9c6d69ce4861b66ffd919 (diff)
Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: driver specific updates" from Arnd Bergmann: "These are all specific to some driver. They are typically the platform side of a change in the drivers directory, such as adding a new driver or extending the interface to the platform. In cases where there is no maintainer for the driver, or the maintainer prefers to have the platform changes in the same branch as the driver changes, the patches to the drivers are included as well. A much smaller set of driver updates that depend on other branches getting merged first will be sent later. The new export of tegra_chip_uid conflicts with other changes in fuse.c. In rtc-sa1100.c, the global removal of IRQF_DISABLED conflicts with the cleanup of the interrupt handling of that driver. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" Fixed up aforementioned trivial conflicts. * tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (94 commits) ARM: SAMSUNG: change the name from s3c-sdhci to exynos4-sdhci mmc: sdhci-s3c: add platform data for the second capability ARM: SAMSUNG: support the second capability for samsung-soc ARM: EXYNOS: add support DMA for EXYNOS4X12 SoC ARM: EXYNOS: Add apb_pclk clkdev entry for mdma1 ARM: EXYNOS: Enable MDMA driver regulator: Remove bq24022 regulator driver rtc: sa1100: add OF support pxa: magician/hx4700: Convert to gpio-regulator from bq24022 ARM: OMAP3+: SmartReflex: fix error handling ARM: OMAP3+: SmartReflex: fix the use of debugfs_create_* API ARM: OMAP3+: SmartReflex: micro-optimization for sanity check ARM: OMAP3+: SmartReflex: misc cleanups ARM: OMAP3+: SmartReflex: move late_initcall() closer to its argument ARM: OMAP3+: SmartReflex: add missing platform_set_drvdata() ARM: OMAP3+: hwmod: add SmartReflex IRQs ARM: OMAP3+: SmartReflex: clear ERRCONFIG_VPBOUNDINTST only on a need ARM: OMAP3+: SmartReflex: Fix status masking in ERRCONFIG register ARM: OMAP3+: SmartReflex: Add a shutdown hook ARM: OMAP3+: SmartReflex Class3: disable errorgen before disable VP ... Conflicts: arch/arm/mach-tegra/Makefile arch/arm/mach-tegra/fuse.c drivers/rtc/rtc-sa1100.c
Diffstat (limited to 'arch/arm/mach-sa1100')
-rw-r--r--arch/arm/mach-sa1100/clock.c82
-rw-r--r--arch/arm/mach-sa1100/generic.c8
2 files changed, 55 insertions, 35 deletions
diff --git a/arch/arm/mach-sa1100/clock.c b/arch/arm/mach-sa1100/clock.c
index dab3c6347a8f..172ebd0ee0a2 100644
--- a/arch/arm/mach-sa1100/clock.c
+++ b/arch/arm/mach-sa1100/clock.c
@@ -11,17 +11,29 @@
#include <linux/clk.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
+#include <linux/io.h>
+#include <linux/clkdev.h>
#include <mach/hardware.h>
-/*
- * Very simple clock implementation - we only have one clock to deal with.
- */
+struct clkops {
+ void (*enable)(struct clk *);
+ void (*disable)(struct clk *);
+};
+
struct clk {
+ const struct clkops *ops;
unsigned int enabled;
};
-static void clk_gpio27_enable(void)
+#define DEFINE_CLK(_name, _ops) \
+struct clk clk_##_name = { \
+ .ops = _ops, \
+ }
+
+static DEFINE_SPINLOCK(clocks_lock);
+
+static void clk_gpio27_enable(struct clk *clk)
{
/*
* First, set up the 3.6864MHz clock on GPIO 27 for the SA-1111:
@@ -32,38 +44,24 @@ static void clk_gpio27_enable(void)
TUCR = TUCR_3_6864MHz;
}
-static void clk_gpio27_disable(void)
+static void clk_gpio27_disable(struct clk *clk)
{
TUCR = 0;
GPDR &= ~GPIO_32_768kHz;
GAFR &= ~GPIO_32_768kHz;
}
-static struct clk clk_gpio27;
-
-static DEFINE_SPINLOCK(clocks_lock);
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- const char *devname = dev_name(dev);
-
- return strcmp(devname, "sa1111.0") ? ERR_PTR(-ENOENT) : &clk_gpio27;
-}
-EXPORT_SYMBOL(clk_get);
-
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
int clk_enable(struct clk *clk)
{
unsigned long flags;
- spin_lock_irqsave(&clocks_lock, flags);
- if (clk->enabled++ == 0)
- clk_gpio27_enable();
- spin_unlock_irqrestore(&clocks_lock, flags);
+ if (clk) {
+ spin_lock_irqsave(&clocks_lock, flags);
+ if (clk->enabled++ == 0)
+ clk->ops->enable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+ }
+
return 0;
}
EXPORT_SYMBOL(clk_enable);
@@ -72,17 +70,31 @@ void clk_disable(struct clk *clk)
{
unsigned long flags;
- WARN_ON(clk->enabled == 0);
-
- spin_lock_irqsave(&clocks_lock, flags);
- if (--clk->enabled == 0)
- clk_gpio27_disable();
- spin_unlock_irqrestore(&clocks_lock, flags);
+ if (clk) {
+ WARN_ON(clk->enabled == 0);
+ spin_lock_irqsave(&clocks_lock, flags);
+ if (--clk->enabled == 0)
+ clk->ops->disable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+ }
}
EXPORT_SYMBOL(clk_disable);
-unsigned long clk_get_rate(struct clk *clk)
+const struct clkops clk_gpio27_ops = {
+ .enable = clk_gpio27_enable,
+ .disable = clk_gpio27_disable,
+};
+
+static DEFINE_CLK(gpio27, &clk_gpio27_ops);
+
+static struct clk_lookup sa11xx_clkregs[] = {
+ CLKDEV_INIT("sa1111.0", NULL, &clk_gpio27),
+ CLKDEV_INIT("sa1100-rtc", NULL, NULL),
+};
+
+static int __init sa11xx_clk_init(void)
{
- return 3686400;
+ clkdev_add_table(sa11xx_clkregs, ARRAY_SIZE(sa11xx_clkregs));
+ return 0;
}
-EXPORT_SYMBOL(clk_get_rate);
+core_initcall(sa11xx_clk_init);
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index bb10ee2cb89f..7c1ebf4a7920 100644
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -345,9 +345,17 @@ void sa11x0_register_irda(struct irda_platform_data *irda)
sa11x0_register_device(&sa11x0ir_device, irda);
}
+static struct resource sa1100_rtc_resources[] = {
+ DEFINE_RES_MEM(0x90010000, 0x9001003f),
+ DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"),
+ DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"),
+};
+
static struct platform_device sa11x0rtc_device = {
.name = "sa1100-rtc",
.id = -1,
+ .num_resources = ARRAY_SIZE(sa1100_rtc_resources),
+ .resource = sa1100_rtc_resources,
};
static struct platform_device *sa11x0_devices[] __initdata = {