[ARM] Merge most of the PXA work for initial merge

This includes PXA work up to the SPI changes for the initial merge,
since e172274c depends on the SPI
tree being merged.

Conflicts:

	arch/arm/configs/em_x270_defconfig
	arch/arm/configs/xm_x270_defconfig

arch/arm/Kconfig

@@ -22,6 +22,9 @@ config ARM
 	  Europe.  There is an ARM Linux project with a web page at
 	  <http://www.arm.linux.org.uk/>.
 
+config HAVE_PWM
+	bool
+
 config SYS_SUPPORTS_APM_EMULATION
 	bool
 

arch/arm/common/sharpsl_pm.c

@@ -31,6 +31,7 @@
 #include <asm/irq.h>
 #include <asm/arch/pm.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/sharpsl.h>
 #include <asm/hardware/sharpsl_pm.h>
 
@@ -157,6 +158,7 @@ static void sharpsl_battery_thread(struct work_struct *private_)
 	dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %ld\n", voltage,
 			sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies);
 
+#ifdef CONFIG_BACKLIGHT_CORGI
 	/* If battery is low. limit backlight intensity to save power. */
 	if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
 			&& ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
@@ -169,6 +171,7 @@ static void sharpsl_battery_thread(struct work_struct *private_)
 		sharpsl_pm.machinfo->backlight_limit(0);
 		sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT;
 	}
+#endif
 
 	/* Suspend if critical battery level */
 	if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)

arch/arm/mach-ixp4xx/common.c

@@ -326,11 +326,11 @@ static struct resource ixp4xx_udc_resources[] = {
 };
 
 /*
- * USB device controller. The IXP4xx uses the same controller as PXA2XX,
+ * USB device controller. The IXP4xx uses the same controller as PXA25X,
  * so we just use the same device.
  */
 static struct platform_device ixp4xx_udc_device = {
-	.name           = "pxa2xx-udc",
+	.name           = "pxa25x-udc",
 	.id             = -1,
 	.num_resources  = 2,
 	.resource       = ixp4xx_udc_resources,

arch/arm/mach-pxa/Kconfig

@@ -20,8 +20,7 @@ endmenu
 
 endif
 
-choice
-	prompt "Select target board"
+menu "Select target boards"
 
 config ARCH_GUMSTIX
 	bool "Gumstix XScale boards"
@@ -37,10 +36,12 @@ config ARCH_LUBBOCK
 config MACH_LOGICPD_PXA270
 	bool "LogicPD PXA270 Card Engine Development Platform"
 	select PXA27x
+	select HAVE_PWM
 
 config MACH_MAINSTONE
 	bool "Intel HCDDBBVA0 Development Platform"
 	select PXA27x
+	select HAVE_PWM
 
 config ARCH_PXA_IDP
 	bool "Accelent Xscale IDP"
@@ -116,6 +117,7 @@ config MACH_COLIBRI
 config MACH_ZYLONITE
 	bool "PXA3xx Development Platform"
 	select PXA3xx
+	select HAVE_PWM
 
 config MACH_LITTLETON
 	bool "PXA3xx Form Factor Platform (aka Littleton)"
@@ -138,7 +140,7 @@ config MACH_PCM027
 	select PXA27x
 	select IWMMXT
 
-endchoice
+endmenu
 
 choice
 	prompt "Used baseboard"
@@ -146,25 +148,24 @@ choice
 
 config MACH_PCM990_BASEBOARD
 	bool "PHYTEC PCM-990 development board"
+	select HAVE_PWM
 
 endchoice
 
-if PXA_SHARPSL
-
 choice
-	prompt "Select target Sharp Zaurus device range"
+	prompt "display on pcm990"
+	depends on MACH_PCM990_BASEBOARD
 
-config PXA_SHARPSL_25x
-	bool "Sharp PXA25x models (SL-5600, SL-C7xx and SL-C6000x)"
-	select PXA25x
+config PCM990_DISPLAY_SHARP
+	bool "sharp lq084v1dg21 stn display"
 
-config PXA_SHARPSL_27x
-	bool "Sharp PXA270 models (SL-Cxx00)"
-	select PXA27x
+config PCM990_DISPLAY_NEC
+	bool "nec nl6448bc20_18d tft display"
 
-endchoice
+config PCM990_DISPLAY_NONE
+	bool "no display"
 
-endif
+endchoice
 
 if ARCH_GUMSTIX
 
@@ -199,28 +200,33 @@ endmenu
 
 config MACH_POODLE
 	bool "Enable Sharp SL-5600 (Poodle) Support"
-	depends on PXA_SHARPSL_25x
+	depends on PXA_SHARPSL
+	select PXA25x
 	select SHARP_LOCOMO
 	select PXA_SSP
 
 config MACH_CORGI
 	bool "Enable Sharp SL-C700 (Corgi) Support"
-	depends on PXA_SHARPSL_25x
+	depends on PXA_SHARPSL
+	select PXA25x
 	select PXA_SHARP_C7xx
 
 config MACH_SHEPHERD
 	bool "Enable Sharp SL-C750 (Shepherd) Support"
-	depends on PXA_SHARPSL_25x
+	depends on PXA_SHARPSL
+	select PXA25x
 	select PXA_SHARP_C7xx
 
 config MACH_HUSKY
 	bool "Enable Sharp SL-C760 (Husky) Support"
-	depends on PXA_SHARPSL_25x
+	depends on PXA_SHARPSL
+	select PXA25x
 	select PXA_SHARP_C7xx
 
 config MACH_AKITA
 	bool "Enable Sharp SL-1000 (Akita) Support"
-	depends on PXA_SHARPSL_27x
+	depends on PXA_SHARPSL
+	select PXA27x
 	select PXA_SHARP_Cxx00
 	select MACH_SPITZ
 	select I2C
@@ -228,17 +234,20 @@ config MACH_AKITA
 
 config MACH_SPITZ
 	bool "Enable Sharp Zaurus SL-3000 (Spitz) Support"
-	depends on PXA_SHARPSL_27x
+	depends on PXA_SHARPSL
+	select PXA27x
 	select PXA_SHARP_Cxx00
 
 config MACH_BORZOI
 	bool "Enable Sharp Zaurus SL-3100 (Borzoi) Support"
-	depends on PXA_SHARPSL_27x
+	depends on PXA_SHARPSL
+	select PXA27x
 	select PXA_SHARP_Cxx00
 
 config MACH_TOSA
 	bool "Enable Sharp SL-6000x (Tosa) Support"
-	depends on PXA_SHARPSL_25x
+	depends on PXA_SHARPSL
+	select PXA25x
 
 config PXA25x
 	bool
@@ -273,4 +282,10 @@ config PXA_SSP
 	tristate
 	help
 	  Enable support for PXA2xx SSP ports
+
+config PXA_PWM
+	tristate
+	default BACKLIGHT_PWM
+	help
+	  Enable support for PXA2xx/PXA3xx PWM controllers
 endif

arch/arm/mach-pxa/Makefile

@@ -10,10 +10,11 @@ obj-$(CONFIG_CPU_FREQ)		+= cpu-pxa.o
 
 # Generic drivers that other drivers may depend upon
 obj-$(CONFIG_PXA_SSP)		+= ssp.o
+obj-$(CONFIG_PXA_PWM)		+= pwm.o
 
 # SoC-specific code
-obj-$(CONFIG_PXA25x)		+= mfp-pxa2xx.o pxa25x.o
-obj-$(CONFIG_PXA27x)		+= mfp-pxa2xx.o pxa27x.o
+obj-$(CONFIG_PXA25x)		+= mfp-pxa2xx.o pxa2xx.o pxa25x.o
+obj-$(CONFIG_PXA27x)		+= mfp-pxa2xx.o pxa2xx.o pxa27x.o
 obj-$(CONFIG_PXA3xx)		+= mfp-pxa3xx.o pxa3xx.o smemc.o
 obj-$(CONFIG_CPU_PXA300)	+= pxa300.o
 obj-$(CONFIG_CPU_PXA320)	+= pxa320.o

arch/arm/mach-pxa/clock.c

@@ -12,7 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 
-#include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include <asm/hardware.h>
 
@@ -47,6 +47,9 @@ struct clk *clk_get(struct device *dev, const char *id)
 		clk = p;
 	mutex_unlock(&clocks_mutex);
 
+	if (!IS_ERR(clk) && clk->ops == NULL)
+		clk = clk->other;
+
 	return clk;
 }
 EXPORT_SYMBOL(clk_get);

arch/arm/mach-pxa/clock.h

@@ -15,6 +15,7 @@ struct clk {
 	unsigned int		cken;
 	unsigned int		delay;
 	unsigned int		enabled;
+	struct clk		*other;
 };
 
 #define INIT_CKEN(_name, _cken, _rate, _delay, _dev)	\
@@ -35,6 +36,17 @@ struct clk {
 		.cken	= CKEN_##_cken,			\
 	}
 
+/*
+ * This is a placeholder to alias one clock device+name pair
+ * to another struct clk.
+ */
+#define INIT_CKOTHER(_name, _other, _dev)		\
+	{						\
+		.name	= _name,			\
+		.dev	= _dev,				\
+		.other	= _other,			\
+	}
+
 extern const struct clkops clk_cken_ops;
 
 void clk_cken_enable(struct clk *clk);

arch/arm/mach-pxa/cm-x270-pci.c

@@ -41,6 +41,7 @@ void __init cmx270_pci_adjust_zones(int node, unsigned long *zone_size,
 {
 	unsigned int sz = SZ_64M >> PAGE_SHIFT;
 
+	if (machine_is_armcore()) {
 		pr_info("Adjusting zones for CM-x270\n");
 
 		/*
@@ -53,6 +54,7 @@ void __init cmx270_pci_adjust_zones(int node, unsigned long *zone_size,
 		zone_size[0] = sz;
 		zhole_size[1] = zhole_size[0];
 		zhole_size[0] = 0;
+	}
 }
 
 static void cmx270_it8152_irq_demux(unsigned int irq, struct irq_desc *desc)

arch/arm/mach-pxa/cm-x270.c

@@ -31,6 +31,7 @@
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
+#include <asm/arch/audio.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/ohci.h>
 #include <asm/arch/mmc.h>
@@ -81,12 +82,6 @@ static struct platform_device cmx270_device_dm9k = {
 	}
 };
 
-/* audio device */
-static struct platform_device cmx270_audio_device = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-};
-
 /* touchscreen controller */
 static struct platform_device cmx270_ts_device = {
 	.name		= "ucb1400_ts",
@@ -219,7 +214,6 @@ static struct platform_device cmx270_ata = {
 /* platform devices */
 static struct platform_device *platform_devices[] __initdata = {
 	&cmx270_device_dm9k,
-	&cmx270_audio_device,
 	&cmx270_rtc_device,
 	&cmx270_2700G,
 	&cmx270_led_device,
@@ -594,6 +588,7 @@ static void __init cmx270_init(void)
 
 	/* register CM-X270 platform devices */
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+	pxa_set_ac97_info(NULL);
 
 	/* set MCI and OHCI platform parameters */
 	pxa_set_mci_info(&cmx270_mci_platform_data);

arch/arm/mach-pxa/corgi.c

@@ -36,6 +36,7 @@
 #include <asm/mach/irq.h>
 
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/mmc.h>

arch/arm/mach-pxa/corgi_pm.c

@@ -26,6 +26,7 @@
 #include <asm/arch/sharpsl.h>
 #include <asm/arch/corgi.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include "sharpsl.h"
 
@@ -204,7 +205,9 @@ static struct sharpsl_charger_machinfo corgi_pm_machinfo = {
 	.read_devdata    = corgipm_read_devdata,
 	.charger_wakeup  = corgi_charger_wakeup,
 	.should_wakeup   = corgi_should_wakeup,
+#ifdef CONFIG_BACKLIGHT_CORGI
 	.backlight_limit = corgibl_limit_intensity,
+#endif
 	.charge_on_volt	  = SHARPSL_CHARGE_ON_VOLT,
 	.charge_on_temp	  = SHARPSL_CHARGE_ON_TEMP,
 	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
@@ -226,6 +229,10 @@ static int __devinit corgipm_init(void)
 {
 	int ret;
 
+	if (!machine_is_corgi() && !machine_is_shepherd()
+			&& !machine_is_husky())
+		return -ENODEV;
+
 	corgipm_device = platform_device_alloc("sharpsl-pm", -1);
 	if (!corgipm_device)
 		return -ENOMEM;

arch/arm/mach-pxa/devices.c

@@ -10,11 +10,14 @@
 #include <asm/arch/mmc.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/i2c.h>
+#include <asm/arch/mfp-pxa27x.h>
 #include <asm/arch/ohci.h>
 #include <asm/arch/pxa27x_keypad.h>
 #include <asm/arch/camera.h>
+#include <asm/arch/audio.h>
 
 #include "devices.h"
+#include "generic.h"
 
 void __init pxa_register_device(struct platform_device *dev, void *data)
 {
@@ -91,8 +94,19 @@ static struct resource pxa2xx_udc_resources[] = {
 
 static u64 udc_dma_mask = ~(u32)0;
 
-struct platform_device pxa_device_udc = {
-	.name		= "pxa2xx-udc",
+struct platform_device pxa25x_device_udc = {
+	.name		= "pxa25x-udc",
+	.id		= -1,
+	.resource	= pxa2xx_udc_resources,
+	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
+	.dev		=  {
+		.platform_data	= &pxa_udc_info,
+		.dma_mask	= &udc_dma_mask,
+	}
+};
+
+struct platform_device pxa27x_device_udc = {
+	.name		= "pxa27x-udc",
 	.id		= -1,
 	.resource	= pxa2xx_udc_resources,
 	.num_resources	= ARRAY_SIZE(pxa2xx_udc_resources),
@@ -233,8 +247,15 @@ struct platform_device pxa_device_i2c = {
 	.num_resources	= ARRAY_SIZE(pxai2c_resources),
 };
 
+static unsigned long pxa27x_i2c_mfp_cfg[] = {
+	GPIO117_I2C_SCL,
+	GPIO118_I2C_SDA,
+};
+
 void __init pxa_set_i2c_info(struct i2c_pxa_platform_data *info)
 {
+	if (cpu_is_pxa27x())
+		pxa2xx_mfp_config(ARRAY_AND_SIZE(pxa27x_i2c_mfp_cfg));
 	pxa_register_device(&pxa_device_i2c, info);
 }
 
@@ -278,8 +299,69 @@ struct platform_device pxa_device_rtc = {
 	.id		= -1,
 };
 
+static struct resource pxa_ac97_resources[] = {
+	[0] = {
+		.start  = 0x40500000,
+		.end	= 0x40500000 + 0xfff,
+		.flags  = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start  = IRQ_AC97,
+		.end    = IRQ_AC97,
+		.flags  = IORESOURCE_IRQ,
+	},
+};
+
+static u64 pxa_ac97_dmamask = 0xffffffffUL;
+
+struct platform_device pxa_device_ac97 = {
+	.name           = "pxa2xx-ac97",
+	.id             = -1,
+	.dev            = {
+		.dma_mask = &pxa_ac97_dmamask,
+		.coherent_dma_mask = 0xffffffff,
+	},
+	.num_resources  = ARRAY_SIZE(pxa_ac97_resources),
+	.resource       = pxa_ac97_resources,
+};
+
+void __init pxa_set_ac97_info(pxa2xx_audio_ops_t *ops)
+{
+	pxa_register_device(&pxa_device_ac97, ops);
+}
+
 #ifdef CONFIG_PXA25x
 
+static struct resource pxa25x_resource_pwm0[] = {
+	[0] = {
+		.start	= 0x40b00000,
+		.end	= 0x40b0000f,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device pxa25x_device_pwm0 = {
+	.name		= "pxa25x-pwm",
+	.id		= 0,
+	.resource	= pxa25x_resource_pwm0,
+	.num_resources	= ARRAY_SIZE(pxa25x_resource_pwm0),
+};
+
+static struct resource pxa25x_resource_pwm1[] = {
+	[0] = {
+		.start	= 0x40c00000,
+		.end	= 0x40c0000f,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device pxa25x_device_pwm1 = {
+	.name		= "pxa25x-pwm",
+	.id		= 1,
+	.resource	= pxa25x_resource_pwm1,
+	.num_resources	= ARRAY_SIZE(pxa25x_resource_pwm1),
+};
+
 static u64 pxa25x_ssp_dma_mask = DMA_BIT_MASK(32);
 
 static struct resource pxa25x_resource_ssp[] = {
@@ -568,6 +650,36 @@ struct platform_device pxa27x_device_ssp3 = {
 	.num_resources	= ARRAY_SIZE(pxa27x_resource_ssp3),
 };
 
+static struct resource pxa27x_resource_pwm0[] = {
+	[0] = {
+		.start	= 0x40b00000,
+		.end	= 0x40b0001f,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device pxa27x_device_pwm0 = {
+	.name		= "pxa27x-pwm",
+	.id		= 0,
+	.resource	= pxa27x_resource_pwm0,
+	.num_resources	= ARRAY_SIZE(pxa27x_resource_pwm0),
+};
+
+static struct resource pxa27x_resource_pwm1[] = {
+	[0] = {
+		.start	= 0x40c00000,
+		.end	= 0x40c0001f,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+struct platform_device pxa27x_device_pwm1 = {
+	.name		= "pxa27x-pwm",
+	.id		= 1,
+	.resource	= pxa27x_resource_pwm1,
+	.num_resources	= ARRAY_SIZE(pxa27x_resource_pwm1),
+};
+
 static struct resource pxa27x_resource_camera[] = {
 	[0] = {
 		.start	= 0x50000000,

arch/arm/mach-pxa/devices.h

 extern struct platform_device pxa_device_mci;
 extern struct platform_device pxa3xx_device_mci2;
 extern struct platform_device pxa3xx_device_mci3;
-extern struct platform_device pxa_device_udc;
+extern struct platform_device pxa25x_device_udc;
+extern struct platform_device pxa27x_device_udc;
 extern struct platform_device pxa_device_fb;
 extern struct platform_device pxa_device_ffuart;
 extern struct platform_device pxa_device_btuart;
@@ -11,6 +12,7 @@ extern struct platform_device pxa_device_i2c;
 extern struct platform_device pxa_device_i2s;
 extern struct platform_device pxa_device_ficp;
 extern struct platform_device pxa_device_rtc;
+extern struct platform_device pxa_device_ac97;
 
 extern struct platform_device pxa27x_device_i2c_power;
 extern struct platform_device pxa27x_device_ohci;
@@ -24,4 +26,9 @@ extern struct platform_device pxa27x_device_ssp2;
 extern struct platform_device pxa27x_device_ssp3;
 extern struct platform_device pxa3xx_device_ssp4;
 
+extern struct platform_device pxa25x_device_pwm0;
+extern struct platform_device pxa25x_device_pwm1;
+extern struct platform_device pxa27x_device_pwm0;
+extern struct platform_device pxa27x_device_pwm1;
+
 void __init pxa_register_device(struct platform_device *dev, void *data);

arch/arm/mach-pxa/em-x270.c

@@ -24,6 +24,8 @@
 
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
+#include <asm/arch/pxa27x-udc.h>
+#include <asm/arch/audio.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/ohci.h>
 #include <asm/arch/mmc.h>
@@ -72,12 +74,6 @@ static struct platform_device em_x270_dm9k = {
 	}
 };
 
-/* audio device */
-static struct platform_device em_x270_audio = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-};
-
 /* WM9712 touchscreen controller. Hopefully the driver will make it to
  * the mainstream sometime */
 static struct platform_device em_x270_ts = {
@@ -217,7 +213,6 @@ static struct platform_device em_x270_nand = {
 /* platform devices */
 static struct platform_device *platform_devices[] __initdata = {
 	&em_x270_dm9k,
-	&em_x270_audio,
 	&em_x270_ts,
 	&em_x270_rtc,
 	&em_x270_nand,
@@ -325,6 +320,7 @@ static void __init em_x270_init(void)
 
 	/* register EM-X270 platform devices */
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
+	pxa_set_ac97_info(NULL);
 
 	/* set MCI and OHCI platform parameters */
 	pxa_set_mci_info(&em_x270_mci_platform_data);

arch/arm/mach-pxa/generic.c

@@ -59,23 +59,6 @@ unsigned int get_memclk_frequency_10khz(void)
 }
 EXPORT_SYMBOL(get_memclk_frequency_10khz);
 
-/*
- * Routine to safely enable or disable a clock in the CKEN
- */
-void __pxa_set_cken(int clock, int enable)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-
-	if (enable)
-		CKEN |= (1 << clock);
-	else
-		CKEN &= ~(1 << clock);
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(__pxa_set_cken);
-
 /*
  * Intel PXA2xx internal register mapping.
  *

arch/arm/mach-pxa/irq.c

@@ -21,7 +21,6 @@
 #include <asm/irq.h>
 #include <asm/mach/irq.h>
 #include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-gpio.h>
 
 #include "generic.h"
 

arch/arm/mach-pxa/lpd270.c

@@ -23,6 +23,7 @@
 #include <linux/ioport.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -134,9 +135,12 @@ static struct sys_device lpd270_irq_device = {
 
 static int __init lpd270_irq_device_init(void)
 {
-	int ret = sysdev_class_register(&lpd270_irq_sysclass);
+	int ret = -ENODEV;
+	if (machine_is_logicpd_pxa270()) {
+		ret = sysdev_class_register(&lpd270_irq_sysclass);
 		if (ret == 0)
 			ret = sysdev_register(&lpd270_irq_device);
+	}
 	return ret;
 }
 
@@ -164,11 +168,6 @@ static struct platform_device smc91x_device = {
 	.resource	= smc91x_resources,
 };
 
-static struct platform_device lpd270_audio_device = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-};
-
 static struct resource lpd270_flash_resources[] = {
 	[0] = {
 		.start	= PXA_CS0_PHYS,
@@ -233,21 +232,20 @@ static struct platform_device lpd270_flash_device[2] = {
 	},
 };
 
-static void lpd270_backlight_power(int on)
-{
-	if (on) {
-		pxa_gpio_mode(GPIO16_PWM0_MD);
-		pxa_set_cken(CKEN_PWM0, 1);
-		PWM_CTRL0 = 0;
-		PWM_PWDUTY0 = 0x3ff;
-		PWM_PERVAL0 = 0x3ff;
-	} else {
-		PWM_CTRL0 = 0;
-		PWM_PWDUTY0 = 0x0;
-		PWM_PERVAL0 = 0x3FF;
-		pxa_set_cken(CKEN_PWM0, 0);
-	}
-}
+static struct platform_pwm_backlight_data lpd270_backlight_data = {
+	.pwm_id		= 0,
+	.max_brightness	= 1,
+	.dft_brightness	= 1,
+	.pwm_period_ns	= 78770,
+};
+
+static struct platform_device lpd270_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent	= &pxa27x_device_pwm0.dev,
+		.platform_data = &lpd270_backlight_data,
+	},
+};
 
 /* 5.7" TFT QVGA (LoLo display number 1) */
 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
@@ -269,7 +267,6 @@ static struct pxafb_mach_info sharp_lq057q3dc02 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 /* 12.1" TFT SVGA (LoLo display number 2) */
@@ -292,7 +289,6 @@ static struct pxafb_mach_info sharp_lq121s1dg31 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 /* 3.6" TFT QVGA (LoLo display number 3) */
@@ -315,7 +311,6 @@ static struct pxafb_mach_info sharp_lq036q1da01 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 /* 6.4" TFT VGA (LoLo display number 5) */
@@ -338,7 +333,6 @@ static struct pxafb_mach_info sharp_lq64d343 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 /* 10.4" TFT VGA (LoLo display number 7) */
@@ -361,7 +355,6 @@ static struct pxafb_mach_info sharp_lq10d368 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 /* 3.5" TFT QVGA (LoLo display number 8) */
@@ -384,7 +377,6 @@ static struct pxafb_mach_info sharp_lq035q7db02_20 = {
 	.num_modes		= 1,
 	.lccr0			= 0x07800080,
 	.lccr3			= 0x00400000,
-	.pxafb_backlight_power	= lpd270_backlight_power,
 };
 
 static struct pxafb_mach_info *lpd270_lcd_to_use;
@@ -414,7 +406,7 @@ __setup("lcd=", lpd270_set_lcd);
 
 static struct platform_device *platform_devices[] __initdata = {
 	&smc91x_device,
-	&lpd270_audio_device,
+	&lpd270_backlight_device,
 	&lpd270_flash_device[0],
 	&lpd270_flash_device[1],
 };
@@ -454,9 +446,12 @@ static void __init lpd270_init(void)
 	 * On LogicPD PXA270, we route AC97_SYSCLK via GPIO45.
 	 */
 	pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
+	pxa_gpio_mode(GPIO16_PWM0_MD);
 
 	platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 
+	pxa_set_ac97_info(NULL);
+
 	if (lpd270_lcd_to_use != NULL)
 		set_pxa_fb_info(lpd270_lcd_to_use);
 

arch/arm/mach-pxa/lubbock.c

@@ -43,6 +43,7 @@
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/mfp-pxa25x.h>
+#include <asm/arch/audio.h>
 #include <asm/arch/lubbock.h>
 #include <asm/arch/udc.h>
 #include <asm/arch/irda.h>
@@ -196,11 +197,6 @@ static struct pxa2xx_udc_mach_info udc_info __initdata = {
 	// no D+ pullup; lubbock can't connect/disconnect in software
 };
 
-static struct platform_device lub_audio_device = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-};
-
 static struct resource sa1111_resources[] = {
 	[0] = {
 		.start	= 0x10000000,
@@ -368,7 +364,6 @@ static struct platform_device lubbock_flash_device[2] = {
 
 static struct platform_device *devices[] __initdata = {
 	&sa1111_device,
-	&lub_audio_device,
 	&smc91x_device,
 	&lubbock_flash_device[0],
 	&lubbock_flash_device[1],
@@ -494,6 +489,7 @@ static void __init lubbock_init(void)
 	set_pxa_fb_info(&sharp_lm8v31);
 	pxa_set_mci_info(&lubbock_mci_platform_data);
 	pxa_set_ficp_info(&lubbock_ficp_platform_data);
+	pxa_set_ac97_info(NULL);
 
 	lubbock_flash_data[0].width = lubbock_flash_data[1].width =
 		(BOOT_DEF & 1) ? 2 : 4;

arch/arm/mach-pxa/magician.c

@@ -25,6 +25,7 @@
 #include <linux/mtd/map.h>
 #include <linux/mtd/physmap.h>
 #include <linux/pda_power.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/gpio.h>
 #include <asm/hardware.h>
@@ -33,12 +34,14 @@
 #include <asm/arch/magician.h>
 #include <asm/arch/mfp-pxa27x.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/i2c.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/ohci.h>
 
+#include "devices.h"
 #include "generic.h"
 
 static unsigned long magician_pin_config[] = {
@@ -348,40 +351,58 @@ static struct pxafb_mach_info samsung_info = {
  * Backlight
  */
 
-static void magician_set_bl_intensity(int intensity)
+static int magician_backlight_init(struct device *dev)
 {
-	if (intensity) {
-		PWM_CTRL0 = 1;
-		PWM_PERVAL0 = 0xc8;
-		if (intensity > 0xc7) {
-			PWM_PWDUTY0 = intensity - 0x48;
+	int ret;
+
+	ret = gpio_request(EGPIO_MAGICIAN_BL_POWER, "BL_POWER");
+	if (ret)
+		goto err;
+	ret = gpio_request(EGPIO_MAGICIAN_BL_POWER2, "BL_POWER2");
+	if (ret)
+		goto err2;
+	return 0;
+
+err2:
+	gpio_free(EGPIO_MAGICIAN_BL_POWER);
+err:
+	return ret;
+}
+
+static int magician_backlight_notify(int brightness)
+{
+	gpio_set_value(EGPIO_MAGICIAN_BL_POWER, brightness);
+	if (brightness >= 200) {
 		gpio_set_value(EGPIO_MAGICIAN_BL_POWER2, 1);
+		return brightness - 72;
 	} else {
-			PWM_PWDUTY0 = intensity;
 		gpio_set_value(EGPIO_MAGICIAN_BL_POWER2, 0);
-		}
-		gpio_set_value(EGPIO_MAGICIAN_BL_POWER, 1);
-		pxa_set_cken(CKEN_PWM0, 1);
-	} else {
-		/* PWM_PWDUTY0 = intensity; */
-		gpio_set_value(EGPIO_MAGICIAN_BL_POWER, 0);
-		pxa_set_cken(CKEN_PWM0, 0);
+		return brightness;
 	}
 }
 
-static struct generic_bl_info backlight_info = {
-	.default_intensity = 0x64,
-	.limit_mask        = 0x0b,
-	.max_intensity     = 0xc7+0x48,
-	.set_bl_intensity  = magician_set_bl_intensity,
+static void magician_backlight_exit(struct device *dev)
+{
+	gpio_free(EGPIO_MAGICIAN_BL_POWER);
+	gpio_free(EGPIO_MAGICIAN_BL_POWER2);
+}
+
+static struct platform_pwm_backlight_data backlight_data = {
+	.pwm_id         = 0,
+	.max_brightness = 272,
+	.dft_brightness = 100,
+	.pwm_period_ns  = 30923,
+	.init           = magician_backlight_init,
+	.notify         = magician_backlight_notify,
+	.exit           = magician_backlight_exit,
 };
 
 static struct platform_device backlight = {
-	.name = "generic-bl",
+	.name = "pwm-backlight",
 	.dev  = {
-		.platform_data = &backlight_info,
+		.parent        = &pxa27x_device_pwm0.dev,
+		.platform_data = &backlight_data,
 	},
-	.id   = -1,
 };
 
 /*

arch/arm/mach-pxa/mainstone.c

@@ -23,9 +23,9 @@
 #include <linux/ioport.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
-#include <linux/backlight.h>
 #include <linux/input.h>
 #include <linux/gpio_keys.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/types.h>
 #include <asm/setup.h>
@@ -280,12 +280,6 @@ static pxa2xx_audio_ops_t mst_audio_ops = {
 	.resume		= mst_audio_resume,
 };
 
-static struct platform_device mst_audio_device = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-	.dev		= { .platform_data = &mst_audio_ops },
-};
-
 static struct resource flash_resources[] = {
 	[0] = {
 		.start	= PXA_CS0_PHYS,
@@ -349,56 +343,27 @@ static struct platform_device mst_flash_device[2] = {
 	},
 };
 
-#ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
-static int mainstone_backlight_update_status(struct backlight_device *bl)
-{
-	int brightness = bl->props.brightness;
-
-	if (bl->props.power != FB_BLANK_UNBLANK ||
-	    bl->props.fb_blank != FB_BLANK_UNBLANK)
-		brightness = 0;
-
-	if (brightness != 0)
-		pxa_set_cken(CKEN_PWM0, 1);
-
-	PWM_CTRL0 = 0;
-	PWM_PWDUTY0 = brightness;
-	PWM_PERVAL0 = bl->props.max_brightness;
-
-	if (brightness == 0)
-		pxa_set_cken(CKEN_PWM0, 0);
-	return 0; /* pointless return value */
-}
-
-static int mainstone_backlight_get_brightness(struct backlight_device *bl)
-{
-	return PWM_PWDUTY0;
-}
+#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
+static struct platform_pwm_backlight_data mainstone_backlight_data = {
+	.pwm_id		= 0,
+	.max_brightness	= 1023,
+	.dft_brightness	= 1023,
+	.pwm_period_ns	= 78770,
+};
 
-static /*const*/ struct backlight_ops mainstone_backlight_ops = {
-	.update_status	= mainstone_backlight_update_status,
-	.get_brightness	= mainstone_backlight_get_brightness,
+static struct platform_device mainstone_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent = &pxa27x_device_pwm0.dev,
+		.platform_data = &mainstone_backlight_data,
+	},
 };
 
 static void __init mainstone_backlight_register(void)
 {
-	struct backlight_device *bl;
-
-	bl = backlight_device_register("mainstone-bl", &pxa_device_fb.dev,
-				       NULL, &mainstone_backlight_ops);
-	if (IS_ERR(bl)) {
-		printk(KERN_ERR "mainstone: unable to register backlight: %ld\n",
-		       PTR_ERR(bl));
-		return;
-	}
-
-	/*
-	 * broken design - register-then-setup interfaces are
-	 * utterly broken by definition.
-	 */
-	bl->props.max_brightness = 1023;
-	bl->props.brightness = 1023;
-	backlight_update_status(bl);
+	int ret = platform_device_register(&mainstone_backlight_device);
+	if (ret)
+		printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
 }
 #else
 #define mainstone_backlight_register()	do { } while (0)
@@ -528,7 +493,6 @@ static struct platform_device mst_gpio_keys_device = {
 
 static struct platform_device *platform_devices[] __initdata = {
 	&smc91x_device,
-	&mst_audio_device,
 	&mst_flash_device[0],
 	&mst_flash_device[1],
 	&mst_gpio_keys_device,
@@ -638,6 +602,7 @@ static void __init mainstone_init(void)
 	pxa_set_ficp_info(&mainstone_ficp_platform_data);
 	pxa_set_ohci_info(&mainstone_ohci_platform_data);
 	pxa_set_i2c_info(NULL);
+	pxa_set_ac97_info(&mst_audio_ops);
 
 	mainstone_init_keypad();
 }

arch/arm/mach-pxa/mfp-pxa2xx.c

@@ -20,6 +20,7 @@
 
 #include <asm/arch/hardware.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/mfp-pxa2xx.h>
 
 #include "generic.h"

arch/arm/mach-pxa/pcm990-baseboard.c

@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/ide.h>
 #include <linux/i2c.h>
+#include <linux/pwm_backlight.h>
 
 #include <media/soc_camera.h>
 
@@ -33,12 +34,103 @@
 #include <asm/mach/map.h>
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
+#include <asm/arch/audio.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/ohci.h>
 #include <asm/arch/pcm990_baseboard.h>
+#include <asm/arch/pxafb.h>
+
+#include "devices.h"
 
 /*
- * The PCM-990 development baseboard uses PCM-027's hardeware in the
+ * pcm990_lcd_power - control power supply to the LCD
+ * @on: 0 = switch off, 1 = switch on
+ *
+ * Called by the pxafb driver
+ */
+#ifndef CONFIG_PCM990_DISPLAY_NONE
+static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
+{
+	if (on) {
+		/* enable LCD-Latches
+		 * power on LCD
+		 */
+		__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) =
+			PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON;
+	} else {
+		/* disable LCD-Latches
+		 * power off LCD
+		 */
+		__PCM990_CTRL_REG(PCM990_CTRL_PHYS + PCM990_CTRL_REG3) = 0x00;
+	}
+}
+#endif
+
+#if defined(CONFIG_PCM990_DISPLAY_SHARP)
+static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
+	.pixclock		= 28000,
+	.xres			= 640,
+	.yres			= 480,
+	.bpp			= 16,
+	.hsync_len		= 20,
+	.left_margin		= 103,
+	.right_margin		= 47,
+	.vsync_len		= 6,
+	.upper_margin		= 28,
+	.lower_margin		= 5,
+	.sync			= 0,
+	.cmap_greyscale		= 0,
+};
+
+static struct pxafb_mach_info pcm990_fbinfo __initdata = {
+	.modes			= &fb_info_sharp_lq084v1dg21,
+	.num_modes		= 1,
+	.lccr0			= LCCR0_PAS,
+	.lccr3			= LCCR3_PCP,
+	.pxafb_lcd_power	= pcm990_lcd_power,
+};
+#elif defined(CONFIG_PCM990_DISPLAY_NEC)
+struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
+	.pixclock		= 39720,
+	.xres			= 640,
+	.yres			= 480,
+	.bpp			= 16,
+	.hsync_len		= 32,
+	.left_margin		= 16,
+	.right_margin		= 48,
+	.vsync_len		= 2,
+	.upper_margin		= 12,
+	.lower_margin		= 17,
+	.sync			= 0,
+	.cmap_greyscale		= 0,
+};
+
+static struct pxafb_mach_info pcm990_fbinfo __initdata = {
+	.modes			= &fb_info_nec_nl6448bc20_18d,
+	.num_modes		= 1,
+	.lccr0			= LCCR0_Act,
+	.lccr3			= LCCR3_PixFlEdg,
+	.pxafb_lcd_power	= pcm990_lcd_power,
+};
+#endif
+
+static struct platform_pwm_backlight_data pcm990_backlight_data = {
+	.pwm_id		= 0,
+	.max_brightness	= 1023,
+	.dft_brightness	= 1023,
+	.pwm_period_ns	= 78770,
+};
+
+static struct platform_device pcm990_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent = &pxa27x_device_pwm0.dev,
+		.platform_data = &pcm990_backlight_data,
+	},
+};
+
+/*
+ * The PCM-990 development baseboard uses PCM-027's hardware in the
  * following way:
  *
  * - LCD support is in use
@@ -332,36 +424,6 @@ static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
 };
 #endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
 
-/*
- * AC97 support
- * Note: The connected AC97 mixer also reports interrupts at PCM990_AC97_IRQ
- */
-static struct resource pxa27x_ac97_resources[] = {
-	[0] = {
-		.start  = 0x40500000,
-		.end	= 0x40500000 + 0xfff,
-		.flags  = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start  = IRQ_AC97,
-		.end    = IRQ_AC97,
-		.flags  = IORESOURCE_IRQ,
-	},
-};
-
-static u64 pxa_ac97_dmamask = 0xffffffffUL;
-
-static struct platform_device pxa27x_device_ac97 = {
-	.name           = "pxa2xx-ac97",
-	.id             = -1,
-	.dev            = {
-		.dma_mask = &pxa_ac97_dmamask,
-		.coherent_dma_mask = 0xffffffff,
-	},
-	.num_resources  = ARRAY_SIZE(pxa27x_ac97_resources),
-	.resource       = pxa27x_ac97_resources,
-};
-
 /*
  * enable generic access to the base board control CPLDs U6 and U7
  */
@@ -393,7 +455,11 @@ void __init pcm990_baseboard_init(void)
 	/* register CPLD's IRQ controller */
 	pcm990_init_irq();
 
-	platform_device_register(&pxa27x_device_ac97);
+#ifndef CONFIG_PCM990_DISPLAY_NONE
+	set_pxa_fb_info(&pcm990_fbinfo);
+#endif
+	pxa_gpio_mode(GPIO16_PWM0_MD);
+	platform_device_register(&pcm990_backlight_device);
 
 	/* MMC */
 	pxa_set_mci_info(&pcm990_mci_platform_data);
@@ -402,6 +468,7 @@ void __init pcm990_baseboard_init(void)
 	pxa_set_ohci_info(&pcm990_ohci_platform_data);
 
 	pxa_set_i2c_info(NULL);
+	pxa_set_ac97_info(NULL);
 
 #if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
 	pxa_set_camera_info(&pcm990_pxacamera_platform_data);

arch/arm/mach-pxa/poodle.c

@@ -32,6 +32,7 @@
 #include <asm/mach/irq.h>
 
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/udc.h>

arch/arm/mach-pxa/pwm.c

+/*
+ * linux/arch/arm/mach-pxa/pwm.c
+ *
+ * simple driver for PWM (Pulse Width Modulator) controller
+ *
+ * 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.
+ *
+ * 2008-02-13	initial version
+ * 		eric miao <eric.miao@marvell.com>
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/pwm.h>
+
+#include <asm/div64.h>
+#include <asm/arch/pxa-regs.h>
+
+/* PWM registers and bits definitions */
+#define PWMCR		(0x00)
+#define PWMDCR		(0x04)
+#define PWMPCR		(0x08)
+
+#define PWMCR_SD	(1 << 6)
+#define PWMDCR_FD	(1 << 10)
+
+struct pwm_device {
+	struct list_head	node;
+	struct platform_device *pdev;
+
+	const char	*label;
+	struct clk	*clk;
+	int		clk_enabled;
+	void __iomem	*mmio_base;
+
+	unsigned int	use_count;
+	unsigned int	pwm_id;
+};
+
+/*
+ * period_ns = 10^9 * (PRESCALE + 1) * (PV + 1) / PWM_CLK_RATE
+ * duty_ns   = 10^9 * (PRESCALE + 1) * DC / PWM_CLK_RATE
+ */
+int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
+{
+	unsigned long long c;
+	unsigned long period_cycles, prescale, pv, dc;
+
+	if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
+		return -EINVAL;
+
+	c = clk_get_rate(pwm->clk);
+	c = c * period_ns;
+	do_div(c, 1000000000);
+	period_cycles = c;
+
+	if (period_cycles < 0)
+		period_cycles = 1;
+	prescale = (period_cycles - 1) / 1024;
+	pv = period_cycles / (prescale + 1) - 1;
+
+	if (prescale > 63)
+		return -EINVAL;
+
+	if (duty_ns == period_ns)
+		dc = PWMDCR_FD;
+	else
+		dc = (pv + 1) * duty_ns / period_ns;
+
+	/* NOTE: the clock to PWM has to be enabled first
+	 * before writing to the registers
+	 */
+	clk_enable(pwm->clk);
+	__raw_writel(prescale, pwm->mmio_base + PWMCR);
+	__raw_writel(dc, pwm->mmio_base + PWMDCR);
+	__raw_writel(pv, pwm->mmio_base + PWMPCR);
+	clk_disable(pwm->clk);
+
+	return 0;
+}
+EXPORT_SYMBOL(pwm_config);
+
+int pwm_enable(struct pwm_device *pwm)
+{
+	int rc = 0;
+
+	if (!pwm->clk_enabled) {
+		rc = clk_enable(pwm->clk);
+		if (!rc)
+			pwm->clk_enabled = 1;
+	}
+	return rc;
+}
+EXPORT_SYMBOL(pwm_enable);
+
+void pwm_disable(struct pwm_device *pwm)
+{
+	if (pwm->clk_enabled) {
+		clk_disable(pwm->clk);
+		pwm->clk_enabled = 0;
+	}
+}
+EXPORT_SYMBOL(pwm_disable);
+
+static DEFINE_MUTEX(pwm_lock);
+static LIST_HEAD(pwm_list);
+
+struct pwm_device *pwm_request(int pwm_id, const char *label)
+{
+	struct pwm_device *pwm;
+	int found = 0;
+
+	mutex_lock(&pwm_lock);
+
+	list_for_each_entry(pwm, &pwm_list, node) {
+		if (pwm->pwm_id == pwm_id) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (found) {
+		if (pwm->use_count == 0) {
+			pwm->use_count++;
+			pwm->label = label;
+		} else
+			pwm = ERR_PTR(-EBUSY);
+	} else
+		pwm = ERR_PTR(-ENOENT);
+
+	mutex_unlock(&pwm_lock);
+	return pwm;
+}
+EXPORT_SYMBOL(pwm_request);
+
+void pwm_free(struct pwm_device *pwm)
+{
+	mutex_lock(&pwm_lock);
+
+	if (pwm->use_count) {
+		pwm->use_count--;
+		pwm->label = NULL;
+	} else
+		pr_warning("PWM device already freed\n");
+
+	mutex_unlock(&pwm_lock);
+}
+EXPORT_SYMBOL(pwm_free);
+
+static inline void __add_pwm(struct pwm_device *pwm)
+{
+	mutex_lock(&pwm_lock);
+	list_add_tail(&pwm->node, &pwm_list);
+	mutex_unlock(&pwm_lock);
+}
+
+static struct pwm_device *pwm_probe(struct platform_device *pdev,
+		unsigned int pwm_id, struct pwm_device *parent_pwm)
+{
+	struct pwm_device *pwm;
+	struct resource *r;
+	int ret = 0;
+
+	pwm = kzalloc(sizeof(struct pwm_device), GFP_KERNEL);
+	if (pwm == NULL) {
+		dev_err(&pdev->dev, "failed to allocate memory\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	pwm->clk = clk_get(&pdev->dev, "PWMCLK");
+	if (IS_ERR(pwm->clk)) {
+		ret = PTR_ERR(pwm->clk);
+		goto err_free;
+	}
+	pwm->clk_enabled = 0;
+
+	pwm->use_count = 0;
+	pwm->pwm_id = pwm_id;
+	pwm->pdev = pdev;
+
+	if (parent_pwm != NULL) {
+		/* registers for the second PWM has offset of 0x10 */
+		pwm->mmio_base = parent_pwm->mmio_base + 0x10;
+		__add_pwm(pwm);
+		return pwm;
+	}
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (r == NULL) {
+		dev_err(&pdev->dev, "no memory resource defined\n");
+		ret = -ENODEV;
+		goto err_free_clk;
+	}
+
+	r = request_mem_region(r->start, r->end - r->start + 1, pdev->name);
+	if (r == NULL) {
+		dev_err(&pdev->dev, "failed to request memory resource\n");
+		ret = -EBUSY;
+		goto err_free_clk;
+	}
+
+	pwm->mmio_base = ioremap(r->start, r->end - r->start + 1);
+	if (pwm->mmio_base == NULL) {
+		dev_err(&pdev->dev, "failed to ioremap() registers\n");
+		ret = -ENODEV;
+		goto err_free_mem;
+	}
+
+	__add_pwm(pwm);
+	platform_set_drvdata(pdev, pwm);
+	return pwm;
+
+err_free_mem:
+	release_mem_region(r->start, r->end - r->start + 1);
+err_free_clk:
+	clk_put(pwm->clk);
+err_free:
+	kfree(pwm);
+	return ERR_PTR(ret);
+}
+
+static int __devinit pxa25x_pwm_probe(struct platform_device *pdev)
+{
+	struct pwm_device *pwm = pwm_probe(pdev, pdev->id, NULL);
+
+	if (IS_ERR(pwm))
+		return PTR_ERR(pwm);
+
+	return 0;
+}
+
+static int __devinit pxa27x_pwm_probe(struct platform_device *pdev)
+{
+	struct pwm_device *pwm;
+
+	pwm = pwm_probe(pdev, pdev->id, NULL);
+	if (IS_ERR(pwm))
+		return PTR_ERR(pwm);
+
+	pwm = pwm_probe(pdev, pdev->id + 2, pwm);
+	if (IS_ERR(pwm))
+		return PTR_ERR(pwm);
+
+	return 0;
+}
+
+static int __devexit pwm_remove(struct platform_device *pdev)
+{
+	struct pwm_device *pwm;
+	struct resource *r;
+
+	pwm = platform_get_drvdata(pdev);
+	if (pwm == NULL)
+		return -ENODEV;
+
+	mutex_lock(&pwm_lock);
+	list_del(&pwm->node);
+	mutex_unlock(&pwm_lock);
+
+	iounmap(pwm->mmio_base);
+
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(r->start, r->end - r->start + 1);
+
+	clk_put(pwm->clk);
+	kfree(pwm);
+	return 0;
+}
+
+static struct platform_driver pxa25x_pwm_driver = {
+	.driver		= {
+		.name	= "pxa25x-pwm",
+	},
+	.probe		= pxa25x_pwm_probe,
+	.remove		= __devexit_p(pwm_remove),
+};
+
+static struct platform_driver pxa27x_pwm_driver = {
+	.driver		= {
+		.name	= "pxa27x-pwm",
+	},
+	.probe		= pxa27x_pwm_probe,
+	.remove		= __devexit_p(pwm_remove),
+};
+
+static int __init pwm_init(void)
+{
+	int ret = 0;
+
+	ret = platform_driver_register(&pxa25x_pwm_driver);
+	if (ret) {
+		printk(KERN_ERR "failed to register pxa25x_pwm_driver\n");
+		return ret;
+	}
+
+	ret = platform_driver_register(&pxa27x_pwm_driver);
+	if (ret) {
+		printk(KERN_ERR "failed to register pxa27x_pwm_driver\n");
+		return ret;
+	}
+
+	return ret;
+}
+arch_initcall(pwm_init);
+
+static void __exit pwm_exit(void)
+{
+	platform_driver_unregister(&pxa25x_pwm_driver);
+	platform_driver_unregister(&pxa27x_pwm_driver);
+}
+module_exit(pwm_exit);
+
+MODULE_LICENSE("GPL v2");

arch/arm/mach-pxa/pxa25x.c

@@ -26,6 +26,7 @@
 #include <asm/hardware.h>
 #include <asm/arch/irqs.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/mfp-pxa25x.h>
 #include <asm/arch/pm.h>
 #include <asm/arch/dma.h>
@@ -117,29 +118,35 @@ static struct clk pxa25x_hwuart_clk =
 	INIT_CKEN("UARTCLK", HWUART, 14745600, 1, &pxa_device_hwuart.dev)
 ;
 
+/*
+ * PXA 2xx clock declarations. Order is important (see aliases below)
+ * Please be careful not to disrupt the ordering.
+ */
 static struct clk pxa25x_clks[] = {
 	INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev),
 	INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev),
 	INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
 	INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
-	INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev),
+	INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa25x_device_udc.dev),
 	INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
 	INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),
 
 	INIT_CKEN("SSPCLK",  SSP, 3686400, 0, &pxa25x_device_ssp.dev),
 	INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev),
 	INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev),
+	INIT_CKEN("PWMCLK", PWM0, 3686400, 0, &pxa25x_device_pwm0.dev),
+	INIT_CKEN("PWMCLK", PWM1, 3686400, 0, &pxa25x_device_pwm1.dev),
 
 	INIT_CKEN("AC97CLK",     AC97,     24576000, 0, NULL),
 
 	/*
-	INIT_CKEN("PWMCLK",  PWM0, 3686400,  0, NULL),
-	INIT_CKEN("PWMCLK",  PWM0, 3686400,  0, NULL),
 	INIT_CKEN("I2SCLK",  I2S,  14745600, 0, NULL),
 	*/
 	INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL),
 };
 
+static struct clk gpio7_clk = INIT_CKOTHER("GPIO7_CK", &pxa25x_clks[4], NULL);
+
 #ifdef CONFIG_PM
 
 #define SAVE(x)		sleep_save[SLEEP_SAVE_##x] = x
@@ -260,7 +267,7 @@ void __init pxa25x_init_irq(void)
 }
 
 static struct platform_device *pxa25x_devices[] __initdata = {
-	&pxa_device_udc,
+	&pxa25x_device_udc,
 	&pxa_device_ffuart,
 	&pxa_device_btuart,
 	&pxa_device_stuart,
@@ -269,6 +276,8 @@ static struct platform_device *pxa25x_devices[] __initdata = {
 	&pxa25x_device_ssp,
 	&pxa25x_device_nssp,
 	&pxa25x_device_assp,
+	&pxa25x_device_pwm0,
+	&pxa25x_device_pwm1,
 };
 
 static struct sys_device pxa25x_sysdev[] = {
@@ -311,6 +320,8 @@ static int __init pxa25x_init(void)
 	if (cpu_is_pxa25x())
 		ret = platform_device_register(&pxa_device_hwuart);
 
+	clks_register(&gpio7_clk, 1);
+
 	return ret;
 }
 

arch/arm/mach-pxa/pxa27x.c

@@ -146,7 +146,7 @@ static struct clk pxa27x_clks[] = {
 
 	INIT_CKEN("I2SCLK",  I2S,  14682000, 0, &pxa_device_i2s.dev),
 	INIT_CKEN("I2CCLK",  I2C,  32842000, 0, &pxa_device_i2c.dev),
-	INIT_CKEN("UDCCLK",  USB,  48000000, 5, &pxa_device_udc.dev),
+	INIT_CKEN("UDCCLK",  USB,  48000000, 5, &pxa27x_device_udc.dev),
 	INIT_CKEN("MMCCLK",  MMC,  19500000, 0, &pxa_device_mci.dev),
 	INIT_CKEN("FICPCLK", FICP, 48000000, 0, &pxa_device_ficp.dev),
 
@@ -157,12 +157,13 @@ static struct clk pxa27x_clks[] = {
 	INIT_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev),
 	INIT_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
 	INIT_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
+	INIT_CKEN("PWMCLK", PWM0, 13000000, 0, &pxa27x_device_pwm0.dev),
+	INIT_CKEN("PWMCLK", PWM1, 13000000, 0, &pxa27x_device_pwm1.dev),
 
 	INIT_CKEN("AC97CLK",     AC97,     24576000, 0, NULL),
 	INIT_CKEN("AC97CONFCLK", AC97CONF, 24576000, 0, NULL),
 
 	/*
-	INIT_CKEN("PWMCLK",  PWM0, 13000000, 0, NULL),
 	INIT_CKEN("MSLCLK",  MSL,  48000000, 0, NULL),
 	INIT_CKEN("USIMCLK", USIM, 48000000, 0, NULL),
 	INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0, NULL),
@@ -349,11 +350,14 @@ struct platform_device pxa27x_device_i2c_power = {
 
 void __init pxa_set_i2c_power_info(struct i2c_pxa_platform_data *info)
 {
+	local_irq_disable();
+	PCFR |= PCFR_PI2CEN;
+	local_irq_enable();
 	pxa27x_device_i2c_power.dev.platform_data = info;
 }
 
 static struct platform_device *devices[] __initdata = {
-	&pxa_device_udc,
+	&pxa27x_device_udc,
 	&pxa_device_ffuart,
 	&pxa_device_btuart,
 	&pxa_device_stuart,
@@ -363,6 +367,8 @@ static struct platform_device *devices[] __initdata = {
 	&pxa27x_device_ssp1,
 	&pxa27x_device_ssp2,
 	&pxa27x_device_ssp3,
+	&pxa27x_device_pwm0,
+	&pxa27x_device_pwm1,
 };
 
 static struct sys_device pxa27x_sysdev[] = {

arch/arm/mach-pxa/pxa2xx.c

+/*
+ * linux/arch/arm/mach-pxa/pxa2xx.c
+ *
+ * code specific to pxa2xx
+ *
+ * Copyright (C) 2008 Dmitry Baryshkov
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+
+#include <asm/arch/mfp-pxa2xx.h>
+#include <asm/arch/mfp-pxa25x.h>
+#include <asm/arch/irda.h>
+
+static unsigned long pxa2xx_mfp_fir[] = {
+	GPIO46_FICP_RXD,
+	GPIO47_FICP_TXD,
+};
+
+static unsigned long pxa2xx_mfp_sir[] = {
+	GPIO46_STUART_RXD,
+	GPIO47_STUART_TXD,
+};
+
+static unsigned long pxa2xx_mfp_off[] = {
+	GPIO46_GPIO | MFP_LPM_DRIVE_LOW,
+	GPIO47_GPIO | MFP_LPM_DRIVE_LOW,
+};
+
+void pxa2xx_transceiver_mode(struct device *dev, int mode)
+{
+	if (mode & IR_OFF) {
+		pxa2xx_mfp_config(pxa2xx_mfp_off, ARRAY_SIZE(pxa2xx_mfp_off));
+	} else if (mode & IR_SIRMODE) {
+		pxa2xx_mfp_config(pxa2xx_mfp_sir, ARRAY_SIZE(pxa2xx_mfp_sir));
+	} else if (mode & IR_FIRMODE) {
+		pxa2xx_mfp_config(pxa2xx_mfp_fir, ARRAY_SIZE(pxa2xx_mfp_fir));
+	} else
+		BUG();
+}

arch/arm/mach-pxa/pxa3xx.c

@@ -231,7 +231,7 @@ static struct clk pxa3xx_clks[] = {
 	PXA3xx_CKEN("UARTCLK", STUART, 14857000, 1, NULL),
 
 	PXA3xx_CKEN("I2CCLK", I2C,  32842000, 0, &pxa_device_i2c.dev),
-	PXA3xx_CKEN("UDCCLK", UDC,  48000000, 5, &pxa_device_udc.dev),
+	PXA3xx_CKEN("UDCCLK", UDC,  48000000, 5, &pxa27x_device_udc.dev),
 	PXA3xx_CKEN("USBCLK", USBH, 48000000, 0, &pxa27x_device_ohci.dev),
 	PXA3xx_CKEN("KBDCLK", KEYPAD,  32768, 0, &pxa27x_device_keypad.dev),
 
@@ -239,6 +239,8 @@ static struct clk pxa3xx_clks[] = {
 	PXA3xx_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
 	PXA3xx_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
 	PXA3xx_CKEN("SSPCLK", SSP4, 13000000, 0, &pxa3xx_device_ssp4.dev),
+	PXA3xx_CKEN("PWMCLK", PWM0, 13000000, 0, &pxa27x_device_pwm0.dev),
+	PXA3xx_CKEN("PWMCLK", PWM1, 13000000, 0, &pxa27x_device_pwm1.dev),
 
 	PXA3xx_CKEN("MMCCLK", MMC1, 19500000, 0, &pxa_device_mci.dev),
 	PXA3xx_CKEN("MMCCLK", MMC2, 19500000, 0, &pxa3xx_device_mci2.dev),
@@ -520,7 +522,7 @@ void __init pxa3xx_init_irq(void)
  */
 
 static struct platform_device *devices[] __initdata = {
-	&pxa_device_udc,
+/*	&pxa_device_udc,	The UDC driver is PXA25x only */
 	&pxa_device_ffuart,
 	&pxa_device_btuart,
 	&pxa_device_stuart,
@@ -530,6 +532,8 @@ static struct platform_device *devices[] __initdata = {
 	&pxa27x_device_ssp2,
 	&pxa27x_device_ssp3,
 	&pxa3xx_device_ssp4,
+	&pxa27x_device_pwm0,
+	&pxa27x_device_pwm1,
 };
 
 static struct sys_device pxa3xx_sysdev[] = {

arch/arm/mach-pxa/spitz_pm.c

@@ -26,6 +26,7 @@
 #include <asm/arch/sharpsl.h>
 #include <asm/arch/spitz.h>
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include "sharpsl.h"
 
@@ -207,7 +208,9 @@ struct sharpsl_charger_machinfo spitz_pm_machinfo = {
 	.read_devdata     = spitzpm_read_devdata,
 	.charger_wakeup   = spitz_charger_wakeup,
 	.should_wakeup    = spitz_should_wakeup,
+#ifdef CONFIG_BACKLIGHT_CORGI
         .backlight_limit  = corgibl_limit_intensity,
+#endif
 	.charge_on_volt	  = SHARPSL_CHARGE_ON_VOLT,
 	.charge_on_temp	  = SHARPSL_CHARGE_ON_TEMP,
 	.charge_acin_high = SHARPSL_CHARGE_ON_ACIN_HIGH,
@@ -229,6 +232,10 @@ static int __devinit spitzpm_init(void)
 {
 	int ret;
 
+	if (!machine_is_spitz() && !machine_is_akita()
+			&& !machine_is_borzoi())
+		return -ENODEV;
+
 	spitzpm_device = platform_device_alloc("sharpsl-pm", -1);
 	if (!spitzpm_device)
 		return -ENOMEM;

arch/arm/mach-pxa/standby.S

@@ -14,6 +14,7 @@
 #include <asm/hardware.h>
 
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 
 		.text
 
@@ -35,20 +36,20 @@ ENTRY(pxa_cpu_standby)
 
 #ifdef CONFIG_PXA3xx
 
-#define MDCNFG		0x0000
-#define MDCNFG_DMCEN	(1 << 30)
-#define DDR_HCAL	0x0060
-#define DDR_HCAL_HCRNG	0x1f
-#define DDR_HCAL_HCPROG	(1 << 28)
-#define DDR_HCAL_HCEN	(1 << 31)
-#define DMCIER		0x0070
-#define DMCIER_EDLP	(1 << 29)
-#define DMCISR		0x0078
-#define RCOMP		0x0100
-#define RCOMP_SWEVAL	(1 << 31)
+#define PXA3_MDCNFG		0x0000
+#define PXA3_MDCNFG_DMCEN	(1 << 30)
+#define PXA3_DDR_HCAL		0x0060
+#define PXA3_DDR_HCAL_HCRNG	0x1f
+#define PXA3_DDR_HCAL_HCPROG	(1 << 28)
+#define PXA3_DDR_HCAL_HCEN	(1 << 31)
+#define PXA3_DMCIER		0x0070
+#define PXA3_DMCIER_EDLP	(1 << 29)
+#define PXA3_DMCISR		0x0078
+#define PXA3_RCOMP		0x0100
+#define PXA3_RCOMP_SWEVAL	(1 << 31)
 
 ENTRY(pm_enter_standby_start)
-	mov	r1, #0xf6000000		@ DMEMC_REG_BASE (MDCNFG)
+	mov	r1, #0xf6000000			@ DMEMC_REG_BASE (PXA3_MDCNFG)
 	add	r1, r1, #0x00100000
 
 	/*
@@ -59,54 +60,54 @@ ENTRY(pm_enter_standby_start)
 	 * This also means that only the dynamic memory controller
 	 * can be reliably accessed in the code following standby.
 	 */
-	ldr	r2, [r1]		@ Dummy read MDCNFG
+	ldr	r2, [r1]			@ Dummy read PXA3_MDCNFG
 
 	mcr	p14, 0, r0, c7, c0, 0
 	.rept	8
 	nop
 	.endr
 
-	ldr	r0, [r1, #DDR_HCAL]	@ Clear (and wait for) HCEN
-	bic	r0, r0, #DDR_HCAL_HCEN
-	str	r0, [r1, #DDR_HCAL]
-1:	ldr	r0, [r1, #DDR_HCAL]
-	tst	r0, #DDR_HCAL_HCEN
+	ldr	r0, [r1, #PXA3_DDR_HCAL]	@ Clear (and wait for) HCEN
+	bic	r0, r0, #PXA3_DDR_HCAL_HCEN
+	str	r0, [r1, #PXA3_DDR_HCAL]
+1:	ldr	r0, [r1, #PXA3_DDR_HCAL]
+	tst	r0, #PXA3_DDR_HCAL_HCEN
 	bne	1b
 
-	ldr	r0, [r1, #RCOMP]	@ Initiate RCOMP
-	orr	r0, r0, #RCOMP_SWEVAL
-	str	r0, [r1, #RCOMP]
+	ldr	r0, [r1, #PXA3_RCOMP]		@ Initiate RCOMP
+	orr	r0, r0, #PXA3_RCOMP_SWEVAL
+	str	r0, [r1, #PXA3_RCOMP]
 
 	mov	r0, #~0				@ Clear interrupts
-	str	r0, [r1, #DMCISR]
+	str	r0, [r1, #PXA3_DMCISR]
 
-	ldr	r0, [r1, #DMCIER]	@ set DMIER[EDLP]
-	orr	r0, r0, #DMCIER_EDLP
-	str	r0, [r1, #DMCIER]
+	ldr	r0, [r1, #PXA3_DMCIER]		@ set DMIER[EDLP]
+	orr	r0, r0, #PXA3_DMCIER_EDLP
+	str	r0, [r1, #PXA3_DMCIER]
 
-	ldr	r0, [r1, #DDR_HCAL]	@ clear HCRNG, set HCPROG, HCEN
-	bic	r0, r0, #DDR_HCAL_HCRNG
-	orr	r0, r0, #DDR_HCAL_HCEN | DDR_HCAL_HCPROG
-	str	r0, [r1, #DDR_HCAL]
+	ldr	r0, [r1, #PXA3_DDR_HCAL]	@ clear HCRNG, set HCPROG, HCEN
+	bic	r0, r0, #PXA3_DDR_HCAL_HCRNG
+	orr	r0, r0, #PXA3_DDR_HCAL_HCEN | PXA3_DDR_HCAL_HCPROG
+	str	r0, [r1, #PXA3_DDR_HCAL]
 
-1:	ldr	r0, [r1, #DMCISR]
-	tst	r0, #DMCIER_EDLP
+1:	ldr	r0, [r1, #PXA3_DMCISR]
+	tst	r0, #PXA3_DMCIER_EDLP
 	beq	1b
 
-	ldr	r0, [r1, #MDCNFG]	@ set MDCNFG[DMCEN]
-	orr	r0, r0, #MDCNFG_DMCEN
-	str	r0, [r1, #MDCNFG]
-1:	ldr	r0, [r1, #MDCNFG]
-	tst	r0, #MDCNFG_DMCEN
+	ldr	r0, [r1, #PXA3_MDCNFG]		@ set PXA3_MDCNFG[DMCEN]
+	orr	r0, r0, #PXA3_MDCNFG_DMCEN
+	str	r0, [r1, #PXA3_MDCNFG]
+1:	ldr	r0, [r1, #PXA3_MDCNFG]
+	tst	r0, #PXA3_MDCNFG_DMCEN
 	beq	1b
 
-	ldr	r0, [r1, #DDR_HCAL]	@ set DDR_HCAL[HCRNG]
+	ldr	r0, [r1, #PXA3_DDR_HCAL]	@ set PXA3_DDR_HCAL[HCRNG]
 	orr	r0, r0, #2 @ HCRNG
-	str	r0, [r1, #DDR_HCAL]
+	str	r0, [r1, #PXA3_DDR_HCAL]
 
-	ldr	r0, [r1, #DMCIER]	@ Clear the interrupt
+	ldr	r0, [r1, #PXA3_DMCIER]		@ Clear the interrupt
 	bic	r0, r0, #0x20000000
-	str	r0, [r1, #DMCIER]
+	str	r0, [r1, #PXA3_DMCIER]
 
 	mov	pc, lr
 ENTRY(pm_enter_standby_end)

arch/arm/mach-pxa/trizeps4.c

@@ -41,6 +41,7 @@
 #include <asm/mach/flash.h>
 
 #include <asm/arch/pxa-regs.h>
+#include <asm/arch/pxa2xx-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
 #include <asm/arch/trizeps4.h>
 #include <asm/arch/audio.h>
@@ -175,19 +176,10 @@ static struct platform_device uart_devices = {
 	.resource	= NULL,
 };
 
-/********************************************************************************************
- * PXA270 ac97 sound codec
- ********************************************************************************************/
-static struct platform_device ac97_audio_device = {
-	.name		= "pxa2xx-ac97",
-	.id		= -1,
-};
-
 static struct platform_device * trizeps4_devices[] __initdata = {
 	&flash_device,
 	&uart_devices,
 	&dm9000_device,
-	&ac97_audio_device,
 };
 
 #ifdef CONFIG_MACH_TRIZEPS4_CONXS
@@ -438,6 +430,7 @@ static void __init trizeps4_init(void)
 	pxa_set_mci_info(&trizeps4_mci_platform_data);
 	pxa_set_ficp_info(&trizeps4_ficp_platform_data);
 	pxa_set_ohci_info(&trizeps4_ohci_platform_data);
+	pxa_set_ac97_info(NULL);
 }
 
 static void __init trizeps4_map_io(void)
@@ -487,6 +480,7 @@ static void __init trizeps4_map_io(void)
 	ConXS_BCR = trizeps_conxs_bcr;
 #endif
 
+#warning FIXME - accessing PM registers directly is deprecated
 	PWER  = 0x00000002;
 	PFER  = 0x00000000;
 	PRER  = 0x00000002;

arch/arm/mach-pxa/zylonite.c

@@ -18,22 +18,24 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/pwm_backlight.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/hardware.h>
+#include <asm/arch/audio.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/zylonite.h>
 #include <asm/arch/mmc.h>
 #include <asm/arch/pxa27x_keypad.h>
 
+#include "devices.h"
 #include "generic.h"
 
 #define MAX_SLOTS	3
 struct platform_mmc_slot zylonite_mmc_slot[MAX_SLOTS];
 
-int gpio_backlight;
 int gpio_eth_irq;
 
 int wm9713_irq;
@@ -62,10 +64,20 @@ static struct platform_device smc91x_device = {
 };
 
 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
-static void zylonite_backlight_power(int on)
-{
-	gpio_set_value(gpio_backlight, on);
-}
+static struct platform_pwm_backlight_data zylonite_backlight_data = {
+	.pwm_id		= 3,
+	.max_brightness	= 100,
+	.dft_brightness	= 100,
+	.pwm_period_ns	= 10000,
+};
+
+static struct platform_device zylonite_backlight_device = {
+	.name		= "pwm-backlight",
+	.dev		= {
+		.parent = &pxa27x_device_pwm1.dev,
+		.platform_data	= &zylonite_backlight_data,
+	},
+};
 
 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
 	.pixclock		= 110000,
@@ -98,7 +110,6 @@ static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
 static struct pxafb_mach_info zylonite_toshiba_lcd_info = {
 	.num_modes      	= 1,
 	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
-	.pxafb_backlight_power	= zylonite_backlight_power,
 };
 
 static struct pxafb_mode_info sharp_ls037_modes[] = {
@@ -134,13 +145,11 @@ static struct pxafb_mach_info zylonite_sharp_lcd_info = {
 	.modes			= sharp_ls037_modes,
 	.num_modes		= 2,
 	.lcd_conn		= LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
-	.pxafb_backlight_power	= zylonite_backlight_power,
 };
 
 static void __init zylonite_init_lcd(void)
 {
-	/* backlight GPIO: output, default on */
-	gpio_direction_output(gpio_backlight, 1);
+	platform_device_register(&zylonite_backlight_device);
 
 	if (lcd_id & 0x20) {
 		set_pxa_fb_info(&zylonite_sharp_lcd_info);
@@ -329,6 +338,7 @@ static void __init zylonite_init(void)
 	smc91x_resources[1].end   = gpio_to_irq(gpio_eth_irq);
 	platform_device_register(&smc91x_device);
 
+	pxa_set_ac97_info(NULL);
 	zylonite_init_lcd();
 	zylonite_init_mmc();
 	zylonite_init_keypad();

arch/arm/mach-pxa/zylonite_pxa300.c

@@ -50,6 +50,7 @@ static mfp_cfg_t common_mfp_cfg[] __initdata = {
 	GPIO75_LCD_BIAS,
 	GPIO76_LCD_VSYNC,
 	GPIO127_LCD_CS_N,
+	GPIO20_PWM3_OUT,	/* backlight */
 
 	/* BTUART */
 	GPIO111_UART2_RTS,
@@ -200,9 +201,6 @@ void __init zylonite_pxa300_init(void)
 		/* detect LCD panel */
 		zylonite_detect_lcd_panel();
 
-		/* GPIO pin assignment */
-		gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
-
 		/* MMC card detect & write protect for controller 0 */
 		zylonite_mmc_slot[0].gpio_cd  = EXT_GPIO(0);
 		zylonite_mmc_slot[0].gpio_wp  = EXT_GPIO(2);

arch/arm/mach-pxa/zylonite_pxa320.c

@@ -49,6 +49,7 @@ static mfp_cfg_t mfp_cfg[] __initdata = {
 	GPIO15_2_LCD_LCLK,
 	GPIO16_2_LCD_PCLK,
 	GPIO17_2_LCD_BIAS,
+	GPIO14_PWM3_OUT,	/* backlight */
 
 	/* FFUART */
 	GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
@@ -187,7 +188,6 @@ void __init zylonite_pxa320_init(void)
 		zylonite_detect_lcd_panel();
 
 		/* GPIO pin assignment */
-		gpio_backlight	= mfp_to_gpio(MFP_PIN_GPIO14);
 		gpio_eth_irq	= mfp_to_gpio(MFP_PIN_GPIO9);
 
 		/* MMC card detect & write protect for controller 0 */

drivers/i2c/busses/i2c-pxa.c

@@ -39,7 +39,6 @@
 #include <asm/io.h>
 #include <asm/arch/i2c.h>
 #include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-gpio.h>
 
 struct pxa_i2c {
 	spinlock_t		lock;
@@ -945,32 +944,6 @@ static const struct i2c_algorithm i2c_pxa_pio_algorithm = {
 	.functionality	= i2c_pxa_functionality,
 };
 
-static void i2c_pxa_enable(struct platform_device *dev)
-{
-	if (cpu_is_pxa27x()) {
-		switch (dev->id) {
-		case 0:
-			pxa_gpio_mode(GPIO117_I2CSCL_MD);
-			pxa_gpio_mode(GPIO118_I2CSDA_MD);
-			break;
-		case 1:
-			local_irq_disable();
-			PCFR |= PCFR_PI2CEN;
-			local_irq_enable();
-			break;
-		}
-	}
-}
-
-static void i2c_pxa_disable(struct platform_device *dev)
-{
-	if (cpu_is_pxa27x() && dev->id == 1) {
-		local_irq_disable();
-		PCFR &= ~PCFR_PI2CEN;
-		local_irq_enable();
-	}
-}
-
 #define res_len(r)		((r)->end - (r)->start + 1)
 static int i2c_pxa_probe(struct platform_device *dev)
 {
@@ -1036,7 +1009,6 @@ static int i2c_pxa_probe(struct platform_device *dev)
 #endif
 
 	clk_enable(i2c->clk);
-	i2c_pxa_enable(dev);
 
 	if (plat) {
 		i2c->adap.class = plat->class;
@@ -1080,7 +1052,6 @@ static int i2c_pxa_probe(struct platform_device *dev)
 		free_irq(irq, i2c);
 ereqirq:
 	clk_disable(i2c->clk);
-	i2c_pxa_disable(dev);
 	iounmap(i2c->reg_base);
 eremap:
 	clk_put(i2c->clk);
@@ -1103,7 +1074,6 @@ static int __exit i2c_pxa_remove(struct platform_device *dev)
 
 	clk_disable(i2c->clk);
 	clk_put(i2c->clk);
-	i2c_pxa_disable(dev);
 
 	iounmap(i2c->reg_base);
 	release_mem_region(i2c->iobase, i2c->iosize);

drivers/net/irda/pxaficp_ir.c

@@ -13,16 +13,8 @@
  *
  */
 #include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/errno.h>
 #include <linux/netdevice.h>
-#include <linux/slab.h>
-#include <linux/rtnetlink.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
-#include <linux/pm.h>
 #include <linux/clk.h>
 
 #include <net/irda/irda.h>
@@ -30,17 +22,9 @@
 #include <net/irda/wrapper.h>
 #include <net/irda/irda_device.h>
 
-#include <asm/irq.h>
 #include <asm/dma.h>
-#include <asm/delay.h>
-#include <asm/hardware.h>
 #include <asm/arch/irda.h>
 #include <asm/arch/pxa-regs.h>
-#include <asm/arch/pxa2xx-gpio.h>
-
-#ifdef CONFIG_MACH_MAINSTONE
-#include <asm/arch/mainstone.h>
-#endif
 
 #define IrSR_RXPL_NEG_IS_ZERO (1<<4)
 #define IrSR_RXPL_POS_IS_ZERO 0x0
@@ -163,10 +147,6 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 			/* set board transceiver to SIR mode */
 			si->pdata->transceiver_mode(si->dev, IR_SIRMODE);
 
-			/* configure GPIO46/47 */
-			pxa_gpio_mode(GPIO46_STRXD_MD);
-			pxa_gpio_mode(GPIO47_STTXD_MD);
-
 			/* enable the STUART clock */
 			pxa_irda_enable_sirclk(si);
 		}
@@ -201,10 +181,6 @@ static int pxa_irda_set_speed(struct pxa_irda *si, int speed)
 		/* set board transceiver to FIR mode */
 		si->pdata->transceiver_mode(si->dev, IR_FIRMODE);
 
-		/* configure GPIO46/47 */
-		pxa_gpio_mode(GPIO46_ICPRXD_MD);
-		pxa_gpio_mode(GPIO47_ICPTXD_MD);
-
 		/* enable the FICP clock */
 		pxa_irda_enable_firclk(si);
 

drivers/pcmcia/pxa2xx_cm_x270.c

@@ -18,6 +18,7 @@
 
 #include <pcmcia/ss.h>
 #include <asm/hardware.h>
+#include <asm/mach-types.h>
 
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/pxa2xx-gpio.h>
@@ -130,7 +131,7 @@ static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
 }
 
 
-static struct pcmcia_low_level cmx270_pcmcia_ops = {
+static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
 	.owner			= THIS_MODULE,
 	.hw_init		= cmx270_pcmcia_hw_init,
 	.hw_shutdown		= cmx270_pcmcia_shutdown,
@@ -147,15 +148,21 @@ static int __init cmx270_pcmcia_init(void)
 {
 	int ret;
 
+	if (!machine_is_armcore())
+		return -ENODEV;
+
 	cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
 
 	if (!cmx270_pcmcia_device)
 		return -ENOMEM;
 
-	cmx270_pcmcia_device->dev.platform_data = &cmx270_pcmcia_ops;
+	ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
+				       sizeof(cmx270_pcmcia_ops));
 
+	if (ret == 0) {
 		printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
 		ret = platform_device_add(cmx270_pcmcia_device);
+	}
 
 	if (ret)
 		platform_device_put(cmx270_pcmcia_device);

drivers/pcmcia/pxa2xx_mainstone.c

@@ -22,6 +22,7 @@
 #include <pcmcia/ss.h>
 
 #include <asm/hardware.h>
+#include <asm/mach-types.h>
 #include <asm/irq.h>
 
 #include <asm/arch/pxa-regs.h>
@@ -136,7 +137,7 @@ static void mst_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
 {
 }
 
-static struct pcmcia_low_level mst_pcmcia_ops = {
+static struct pcmcia_low_level mst_pcmcia_ops __initdata = {
 	.owner			= THIS_MODULE,
 	.hw_init		= mst_pcmcia_hw_init,
 	.hw_shutdown		= mst_pcmcia_hw_shutdown,
@@ -153,12 +154,16 @@ static int __init mst_pcmcia_init(void)
 {
 	int ret;
 
+	if (!machine_is_mainstone())
+		return -ENODEV;
+
 	mst_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
 	if (!mst_pcmcia_device)
 		return -ENOMEM;
 
-	mst_pcmcia_device->dev.platform_data = &mst_pcmcia_ops;
-
+	ret = platform_device_add_data(mst_pcmcia_device, &mst_pcmcia_ops,
+				       sizeof(mst_pcmcia_ops));
+	if (ret == 0)
 		ret = platform_device_add(mst_pcmcia_device);
 
 	if (ret)

drivers/pcmcia/pxa2xx_sharpsl.c

@@ -222,7 +222,7 @@ static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
 	sharpsl_pcmcia_init_reset(skt);
 }
 
-static struct pcmcia_low_level sharpsl_pcmcia_ops = {
+static struct pcmcia_low_level sharpsl_pcmcia_ops __initdata = {
 	.owner                  = THIS_MODULE,
 	.hw_init                = sharpsl_pcmcia_hw_init,
 	.hw_shutdown            = sharpsl_pcmcia_hw_shutdown,
@@ -261,10 +261,12 @@ static int __init sharpsl_pcmcia_init(void)
 	if (!sharpsl_pcmcia_device)
 		return -ENOMEM;
 
-	sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
+	ret = platform_device_add_data(sharpsl_pcmcia_device,
+			&sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
+	if (ret == 0) {
 		sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
-
 		ret = platform_device_add(sharpsl_pcmcia_device);
+	}
 
 	if (ret)
 		platform_device_put(sharpsl_pcmcia_device);

drivers/usb/gadget/Kconfig

@@ -172,7 +172,7 @@ config USB_NET2280
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
-config USB_GADGET_PXA2XX
+config USB_GADGET_PXA25X
 	boolean "PXA 25x or IXP 4xx"
 	depends on (ARCH_PXA && PXA25x) || ARCH_IXP4XX
 	help
@@ -184,19 +184,19 @@ config USB_GADGET_PXA2XX
 	   zero (for control transfers).
 
 	   Say "y" to link the driver statically, or "m" to build a
-	   dynamically linked module called "pxa2xx_udc" and force all
+	   dynamically linked module called "pxa25x_udc" and force all
 	   gadget drivers to also be dynamically linked.
 
-config USB_PXA2XX
+config USB_PXA25X
 	tristate
-	depends on USB_GADGET_PXA2XX
+	depends on USB_GADGET_PXA25X
 	default USB_GADGET
 	select USB_GADGET_SELECTED
 
 # if there's only one gadget driver, using only two bulk endpoints,
 # don't waste memory for the other endpoints
-config USB_PXA2XX_SMALL
-	depends on USB_GADGET_PXA2XX
+config USB_PXA25X_SMALL
+	depends on USB_GADGET_PXA25X
 	bool
 	default n if USB_ETH_RNDIS
 	default y if USB_ZERO

drivers/usb/gadget/Makefile

@@ -8,7 +8,7 @@ endif
 obj-$(CONFIG_USB_DUMMY_HCD)	+= dummy_hcd.o
 obj-$(CONFIG_USB_NET2280)	+= net2280.o
 obj-$(CONFIG_USB_AMD5536UDC)	+= amd5536udc.o
-obj-$(CONFIG_USB_PXA2XX)	+= pxa2xx_udc.o
+obj-$(CONFIG_USB_PXA25X)	+= pxa25x_udc.o
 obj-$(CONFIG_USB_PXA27X)	+= pxa27x_udc.o
 obj-$(CONFIG_USB_GOKU)		+= goku_udc.o
 obj-$(CONFIG_USB_OMAP)		+= omap_udc.o

drivers/usb/gadget/ether.c

@@ -262,7 +262,7 @@ MODULE_PARM_DESC(host_addr, "Host Ethernet Address");
 /* For CDC-incapable hardware, choose the simple cdc subset.
  * Anything that talks bulk (without notable bugs) can do this.
  */
-#ifdef CONFIG_USB_GADGET_PXA2XX
+#ifdef CONFIG_USB_GADGET_PXA25X
 #define	DEV_CONFIG_SUBSET
 #endif
 

drivers/usb/gadget/gadget_chips.h

@@ -29,8 +29,8 @@
 #define	gadget_is_dummy(g)	0
 #endif
 
-#ifdef CONFIG_USB_GADGET_PXA2XX
-#define	gadget_is_pxa(g)	!strcmp("pxa2xx_udc", (g)->name)
+#ifdef CONFIG_USB_GADGET_PXA25X
+#define	gadget_is_pxa(g)	!strcmp("pxa25x_udc", (g)->name)
 #else
 #define	gadget_is_pxa(g)	0
 #endif

drivers/usb/gadget/inode.c

@@ -1501,7 +1501,7 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 		}
 		break;
 
-#ifndef	CONFIG_USB_GADGET_PXA2XX
+#ifndef	CONFIG_USB_GADGET_PXA25X
 	/* PXA automagically handles this request too */
 	case USB_REQ_GET_CONFIGURATION:
 		if (ctrl->bRequestType != 0x80)

drivers/video/backlight/Makefile

@@ -10,3 +10,4 @@ obj-$(CONFIG_BACKLIGHT_LOCOMO)	+= locomolcd.o
 obj-$(CONFIG_BACKLIGHT_OMAP1)	+= omap1_bl.o
 obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
 obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
+obj-$(CONFIG_BACKLIGHT_PWM)	+= pwm_bl.o