Merge upstream kernel changes into 'C/H/S support' branch of libata.

5 files changed, 158 insertions, 15 deletions

diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index dd012d6e2f5..f2c9e0d2b24 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -15,6 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/sysdev.h>
 #include <linux/major.h>
 #include <linux/fb.h>
 #include <linux/interrupt.h>
@@ -106,6 +107,35 @@ static void __init lubbock_init_irq(void)
 	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 }
 
+#ifdef CONFIG_PM
+
+static int lubbock_irq_resume(struct sys_device *dev)
+{
+	LUB_IRQ_MASK_EN = lubbock_irq_enabled;
+	return 0;
+}
+
+static struct sysdev_class lubbock_irq_sysclass = {
+	set_kset_name("cpld_irq"),
+	.resume = lubbock_irq_resume,
+};
+
+static struct sys_device lubbock_irq_device = {
+	.cls = &lubbock_irq_sysclass,
+};
+
+static int __init lubbock_irq_device_init(void)
+{
+	int ret = sysdev_class_register(&lubbock_irq_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&lubbock_irq_device);
+	return ret;
+}
+
+device_initcall(lubbock_irq_device_init);
+
+#endif
+
 static int lubbock_udc_is_connected(void)
 {
 	return (LUB_MISC_RD & (1 << 9)) == 0;
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 3f952237ae3..9896afca751 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -15,6 +15,7 @@
 
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/sysdev.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
@@ -62,7 +63,6 @@ static struct irqchip mainstone_irq_chip = {
 	.unmask		= mainstone_unmask_irq,
 };
 
-
 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
 				  struct pt_regs *regs)
 {
@@ -100,6 +100,35 @@ static void __init mainstone_init_irq(void)
 	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 }
 
+#ifdef CONFIG_PM
+
+static int mainstone_irq_resume(struct sys_device *dev)
+{
+	MST_INTMSKENA = mainstone_irq_enabled;
+	return 0;
+}
+
+static struct sysdev_class mainstone_irq_sysclass = {
+	set_kset_name("cpld_irq"),
+	.resume = mainstone_irq_resume,
+};
+
+static struct sys_device mainstone_irq_device = {
+	.cls = &mainstone_irq_sysclass,
+};
+
+static int __init mainstone_irq_device_init(void)
+{
+	int ret = sysdev_class_register(&mainstone_irq_sysclass);
+	if (ret == 0)
+		ret = sysdev_register(&mainstone_irq_device);
+	return ret;
+}
+
+device_initcall(mainstone_irq_device_init);
+
+#endif
+
 
 static struct resource smc91x_resources[] = {
 	[0] = {
@@ -304,6 +333,15 @@ static void __init mainstone_map_io(void)
 	PWER  = 0xC0000002;
 	PRER  = 0x00000002;
 	PFER  = 0x00000002;
+ 	/*	for use I SRAM as framebuffer.	*/
+ 	PSLR |= 0xF04;
+ 	PCFR = 0x66;
+ 	/*	For Keypad wakeup.	*/
+ 	KPC &=~KPC_ASACT;
+ 	KPC |=KPC_AS;
+ 	PKWR  = 0x000FD000;
+ 	/*	Need read PKWR back after set it.	*/
+ 	PKWR;
 }
 
 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index 82a4bf34c25..ac4dd433616 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/arch/arm/mach-pxa/pm.c
@@ -29,9 +29,6 @@
  */
 #undef DEBUG
 
-extern void pxa_cpu_suspend(void);
-extern void pxa_cpu_resume(void);
-
 #define SAVE(x)		sleep_save[SLEEP_SAVE_##x] = x
 #define RESTORE(x)	x = sleep_save[SLEEP_SAVE_##x]
 
@@ -63,6 +60,12 @@ enum {	SLEEP_SAVE_START = 0,
 	SLEEP_SAVE_ICMR,
 	SLEEP_SAVE_CKEN,
 
+#ifdef CONFIG_PXA27x
+ 	SLEEP_SAVE_MDREFR,
+ 	SLEEP_SAVE_PWER, SLEEP_SAVE_PCFR, SLEEP_SAVE_PRER,
+ 	SLEEP_SAVE_PFER, SLEEP_SAVE_PKWR,
+#endif
+
 	SLEEP_SAVE_CKSUM,
 
 	SLEEP_SAVE_SIZE
@@ -75,9 +78,7 @@ static int pxa_pm_enter(suspend_state_t state)
 	unsigned long checksum = 0;
 	struct timespec delta, rtc;
 	int i;
-
-	if (state != PM_SUSPEND_MEM)
-		return -EINVAL;
+	extern void pxa_cpu_pm_enter(suspend_state_t state);
 
 #ifdef CONFIG_IWMMXT
 	/* force any iWMMXt context to ram **/
@@ -100,16 +101,17 @@ static int pxa_pm_enter(suspend_state_t state)
 	SAVE(GAFR2_L); SAVE(GAFR2_U);
 
 #ifdef CONFIG_PXA27x
+	SAVE(MDREFR);
 	SAVE(GPLR3); SAVE(GPDR3); SAVE(GRER3); SAVE(GFER3); SAVE(PGSR3);
 	SAVE(GAFR3_L); SAVE(GAFR3_U);
+	SAVE(PWER); SAVE(PCFR); SAVE(PRER);
+	SAVE(PFER); SAVE(PKWR);
 #endif
 
 	SAVE(ICMR);
 	ICMR = 0;
 
 	SAVE(CKEN);
-	CKEN = 0;
-
 	SAVE(PSTR);
 
 	/* Note: wake up source are set up in each machine specific files */
@@ -123,16 +125,15 @@ static int pxa_pm_enter(suspend_state_t state)
 	/* Clear sleep reset status */
 	RCSR = RCSR_SMR;
 
-	/* set resume return address */
-	PSPR = virt_to_phys(pxa_cpu_resume);
-
 	/* before sleeping, calculate and save a checksum */
 	for (i = 0; i < SLEEP_SAVE_SIZE - 1; i++)
 		checksum += sleep_save[i];
 	sleep_save[SLEEP_SAVE_CKSUM] = checksum;
 
 	/* *** go zzz *** */
-	pxa_cpu_suspend();
+	pxa_cpu_pm_enter(state);
+
+	cpu_init();
 
 	/* after sleeping, validate the checksum */
 	checksum = 0;
@@ -145,7 +146,7 @@ static int pxa_pm_enter(suspend_state_t state)
 		LUB_HEXLED = 0xbadbadc5;
 #endif
 		while (1)
-			pxa_cpu_suspend();
+			pxa_cpu_pm_enter(state);
 	}
 
 	/* ensure not to come back here if it wasn't intended */
@@ -162,8 +163,11 @@ static int pxa_pm_enter(suspend_state_t state)
 	RESTORE(PGSR0); RESTORE(PGSR1); RESTORE(PGSR2);
 
 #ifdef CONFIG_PXA27x
+	RESTORE(MDREFR);
 	RESTORE(GAFR3_L); RESTORE(GAFR3_U); RESTORE_GPLEVEL(3);
 	RESTORE(GPDR3); RESTORE(GRER3); RESTORE(GFER3); RESTORE(PGSR3);
+	RESTORE(PWER); RESTORE(PCFR); RESTORE(PRER);
+	RESTORE(PFER); RESTORE(PKWR);
 #endif
 
 	PSSR = PSSR_RDH | PSSR_PH;
@@ -197,7 +201,9 @@ unsigned long sleep_phys_sp(void *sp)
  */
 static int pxa_pm_prepare(suspend_state_t state)
 {
-	return 0;
+	extern int pxa_cpu_pm_prepare(suspend_state_t state);
+
+	return pxa_cpu_pm_prepare(state);
 }
 
 /*
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index e887b7175ef..7869c3b4e62 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -16,6 +16,7 @@
  * initialization stuff for PXA machines which can be overridden later if
  * need be.
  */
+#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -102,3 +103,35 @@ unsigned int get_lcdclk_frequency_10khz(void)
 }
 
 EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
+
+#ifdef CONFIG_PM
+
+int pxa_cpu_pm_prepare(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+void pxa_cpu_pm_enter(suspend_state_t state)
+{
+	extern void pxa_cpu_suspend(unsigned int);
+	extern void pxa_cpu_resume(void);
+
+	CKEN = 0;
+
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		/* set resume return address */
+		PSPR = virt_to_phys(pxa_cpu_resume);
+		pxa_cpu_suspend(3);
+		break;
+	}
+}
+
+#endif
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 7e863afefb5..893964fb965 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -120,6 +120,42 @@ EXPORT_SYMBOL(get_clk_frequency_khz);
 EXPORT_SYMBOL(get_memclk_frequency_10khz);
 EXPORT_SYMBOL(get_lcdclk_frequency_10khz);
 
+#ifdef CONFIG_PM
+
+int pxa_cpu_pm_prepare(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+void pxa_cpu_pm_enter(suspend_state_t state)
+{
+	extern void pxa_cpu_standby(void);
+	extern void pxa_cpu_suspend(unsigned int);
+	extern void pxa_cpu_resume(void);
+
+	CKEN = CKEN22_MEMC | CKEN9_OSTIMER;
+
+	/* ensure voltage-change sequencer not initiated, which hangs */
+	PCFR &= ~PCFR_FVC;
+
+	/* Clear edge-detect status register. */
+	PEDR = 0xDF12FE1B;
+
+	switch (state) {
+	case PM_SUSPEND_MEM:
+		/* set resume return address */
+		PSPR = virt_to_phys(pxa_cpu_resume);
+		pxa_cpu_suspend(3);
+		break;
+	}
+}
+
+#endif
 
 /*
  * device registration specific to PXA27x.