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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 01:41:24 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 01:41:24 +0200
commit34800598b2eebe061445216473b1e4c2ff5cba99 (patch)
treea6d0eb6fe45d9480888d7ddb34840e172ed80e56 /arch/arm/mach-lpc32xx
parentMerge tag 'rpmsg' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (diff)
parentMerge tag 'regulator-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/br... (diff)
downloadlinux-34800598b2eebe061445216473b1e4c2ff5cba99.tar.xz
linux-34800598b2eebe061445216473b1e4c2ff5cba99.zip
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-lpc32xx')
-rw-r--r--arch/arm/mach-lpc32xx/clock.c36
-rw-r--r--arch/arm/mach-lpc32xx/common.c22
-rw-r--r--arch/arm/mach-lpc32xx/common.h1
-rw-r--r--arch/arm/mach-lpc32xx/phy3250.c1
4 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/mach-lpc32xx/clock.c b/arch/arm/mach-lpc32xx/clock.c
index 0e01bf44479c..f55c772d1816 100644
--- a/arch/arm/mach-lpc32xx/clock.c
+++ b/arch/arm/mach-lpc32xx/clock.c
@@ -721,6 +721,41 @@ static struct clk clk_tsc = {
.get_rate = local_return_parent_rate,
};
+static int adc_onoff_enable(struct clk *clk, int enable)
+{
+ u32 tmp;
+ u32 divider;
+
+ /* Use PERIPH_CLOCK */
+ tmp = __raw_readl(LPC32XX_CLKPWR_ADC_CLK_CTRL_1);
+ tmp |= LPC32XX_CLKPWR_ADCCTRL1_PCLK_SEL;
+ /*
+ * Set clock divider so that we have equal to or less than
+ * 4.5MHz clock at ADC
+ */
+ divider = clk->get_rate(clk) / 4500000 + 1;
+ tmp |= divider;
+ __raw_writel(tmp, LPC32XX_CLKPWR_ADC_CLK_CTRL_1);
+
+ /* synchronize rate of this clock w/ actual HW setting */
+ clk->rate = clk->get_rate(clk->parent) / divider;
+
+ if (enable == 0)
+ __raw_writel(0, clk->enable_reg);
+ else
+ __raw_writel(clk->enable_mask, clk->enable_reg);
+
+ return 0;
+}
+
+static struct clk clk_adc = {
+ .parent = &clk_pclk,
+ .enable = adc_onoff_enable,
+ .enable_reg = LPC32XX_CLKPWR_ADC_CLK_CTRL,
+ .enable_mask = LPC32XX_CLKPWR_ADC32CLKCTRL_CLK_EN,
+ .get_rate = local_return_parent_rate,
+};
+
static int mmc_onoff_enable(struct clk *clk, int enable)
{
u32 tmp;
@@ -1055,6 +1090,7 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("dev:ssp1", NULL, clk_ssp1)
_REGISTER_CLOCK("lpc32xx_keys.0", NULL, clk_kscan)
_REGISTER_CLOCK("lpc32xx-nand.0", "nand_ck", clk_nand)
+ _REGISTER_CLOCK("lpc32xx-adc", NULL, clk_adc)
_REGISTER_CLOCK(NULL, "i2s0_ck", clk_i2s0)
_REGISTER_CLOCK(NULL, "i2s1_ck", clk_i2s1)
_REGISTER_CLOCK("ts-lpc32xx", NULL, clk_tsc)
diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c
index 369b152896cd..6c76bb36559b 100644
--- a/arch/arm/mach-lpc32xx/common.c
+++ b/arch/arm/mach-lpc32xx/common.c
@@ -138,6 +138,28 @@ struct platform_device lpc32xx_rtc_device = {
};
/*
+ * ADC support
+ */
+static struct resource adc_resources[] = {
+ {
+ .start = LPC32XX_ADC_BASE,
+ .end = LPC32XX_ADC_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = IRQ_LPC32XX_TS_IRQ,
+ .end = IRQ_LPC32XX_TS_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+struct platform_device lpc32xx_adc_device = {
+ .name = "lpc32xx-adc",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(adc_resources),
+ .resource = adc_resources,
+};
+
+/*
* Returns the unique ID for the device
*/
void lpc32xx_get_uid(u32 devid[4])
diff --git a/arch/arm/mach-lpc32xx/common.h b/arch/arm/mach-lpc32xx/common.h
index 75640bfb097f..68f2e46d98ad 100644
--- a/arch/arm/mach-lpc32xx/common.h
+++ b/arch/arm/mach-lpc32xx/common.h
@@ -29,6 +29,7 @@ extern struct platform_device lpc32xx_i2c0_device;
extern struct platform_device lpc32xx_i2c1_device;
extern struct platform_device lpc32xx_i2c2_device;
extern struct platform_device lpc32xx_tsc_device;
+extern struct platform_device lpc32xx_adc_device;
extern struct platform_device lpc32xx_rtc_device;
/*
diff --git a/arch/arm/mach-lpc32xx/phy3250.c b/arch/arm/mach-lpc32xx/phy3250.c
index 8571d6250dc1..0d79a3f8a5e0 100644
--- a/arch/arm/mach-lpc32xx/phy3250.c
+++ b/arch/arm/mach-lpc32xx/phy3250.c
@@ -254,6 +254,7 @@ static struct platform_device *phy3250_devs[] __initdata = {
&lpc32xx_i2c2_device,
&lpc32xx_watchdog_device,
&lpc32xx_gpio_led_device,
+ &lpc32xx_adc_device,
};
static struct amba_device *amba_devs[] __initdata = {