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path: root/packages/linux/linux-ezx-2.6.21/patches/ezx-pm.patch
blob: 85b6f5c15dc1cee9c8c4d471006791e04e80bdee (plain)
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Index: linux-2.6.21/arch/arm/mach-pxa/pxa27x.c
===================================================================
--- linux-2.6.21.orig/arch/arm/mach-pxa/pxa27x.c	2007-05-08 16:29:23.000000000 -0300
+++ linux-2.6.21/arch/arm/mach-pxa/pxa27x.c	2007-05-08 16:29:36.000000000 -0300
@@ -22,6 +22,10 @@
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/ohci.h>
 
+#ifdef CONFIG_PXA_EZX
+#include <asm/arch/ezx.h>
+#endif
+
 #include "generic.h"
 
 /* Crystal clock: 13MHz */
@@ -156,7 +160,13 @@
 		break;
 	case PM_SUSPEND_MEM:
 		/* set resume return address */
+#ifdef CONFIG_PXA_EZX
+		/* set EZX flags for blob - WM */
+		*(unsigned long *)(phys_to_virt(RESUME_ADDR)) = virt_to_phys(pxa_cpu_resume);
+		*(unsigned long *)(phys_to_virt(FLAG_ADDR)) = SLEEP_FLAG;
+#else
 		PSPR = virt_to_phys(pxa_cpu_resume);
+#endif
 		pxa_cpu_suspend(PWRMODE_SLEEP);
 		break;
 	}
Index: linux-2.6.21/arch/arm/mach-pxa/pm.c
===================================================================
--- linux-2.6.21.orig/arch/arm/mach-pxa/pm.c	2007-05-08 16:29:23.000000000 -0300
+++ linux-2.6.21/arch/arm/mach-pxa/pm.c	2007-05-08 16:29:36.000000000 -0300
@@ -24,6 +24,10 @@
 #include <asm/arch/lubbock.h>
 #include <asm/mach/time.h>
 
+#ifdef CONFIG_PXA_EZX
+#include <asm/arch/ezx.h>
+#endif
+
 
 /*
  * Debug macros
@@ -152,8 +156,12 @@
 	}
 
 	/* ensure not to come back here if it wasn't intended */
+#ifdef CONFIG_PXA_EZX
+        *(unsigned long *)(phys_to_virt(RESUME_ADDR)) = 0;
+        *(unsigned long *)(phys_to_virt(FLAG_ADDR)) = OFF_FLAG;
+#else
 	PSPR = 0;
-
+#endif
 	/* restore registers */
 	RESTORE_GPLEVEL(0); RESTORE_GPLEVEL(1); RESTORE_GPLEVEL(2);
 	RESTORE(GPDR0); RESTORE(GPDR1); RESTORE(GPDR2);
Index: linux-2.6.21/arch/arm/mach-pxa/ezx.c
===================================================================
--- linux-2.6.21.orig/arch/arm/mach-pxa/ezx.c	2007-05-08 16:29:36.000000000 -0300
+++ linux-2.6.21/arch/arm/mach-pxa/ezx.c	2007-05-08 16:32:56.000000000 -0300
@@ -18,6 +18,7 @@
 #include <asm/arch/pxafb.h>
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/ohci.h>
+#include <asm/arch/system.h>
 
 #include "generic.h"
 #include "ezx.h"
@@ -137,8 +138,69 @@
 	&ezxbp_device,
 };
 
+/* PM */
+extern int bp_handshake_passed(void);
+
+#define POWER_OFF_TIMEOUT       (2*60*HZ)
+
+static void ezx_reboot_poweroff(char mode)
+{
+#ifdef CONFIG_EZX_BP
+	unsigned long start = jiffies;
+
+	printk("Waiting for BP to turn off. This can take some time...\n");
+	*(unsigned long *)(phys_to_virt(BPSIG_ADDR)) = NO_FLAG;
+	cpu_proc_fin();
+
+	do {
+		/*
+		 * Turn off gracefully. Wait BP turn off first, and then
+		 * properly turn off.
+		 */
+		if (pxa_gpio_get_value(GPIO_BB_WDI) == 0) {
+			*(unsigned long *)(phys_to_virt(BPSIG_ADDR)) = WDI_FLAG;
+
+			/* reset BP */
+			pxa_gpio_set_value(GPIO_BB_RESET, 0);
+			mdelay(1);
+			pxa_gpio_set_value(GPIO_BB_RESET, 1);
+
+			if (mode == 'z')
+				arch_reset('h');
+			break;
+		}
+		/* Just turn it off! */
+		if (!bp_handshake_passed() || !pxa_gpio_get_value(GPIO_BB_WDI2)
+				|| (jiffies - start) >= POWER_OFF_TIMEOUT) {
+			break;
+		}
+	} while(1);
+#endif
+
+	if (mode == 'z')
+		/* Panic! Ask PCAP to turn both processors off */
+		pxa_gpio_set_value(GPIO_WDI_AP, 0);
+	else
+		arm_machine_restart(mode);
+
+	while(1);
+}
+
+static inline void ezx_poweroff(void)
+{
+	ezx_reboot_poweroff('z');
+}
+
+static inline void ezx_restart(char mode)
+{
+	ezx_reboot_poweroff(mode);
+}
+
 static int __init ezx_init(void)
 {
+	pm_power_off = ezx_poweroff;
+	arm_pm_restart = ezx_restart;
+
 	CKEN = CKEN9_OSTIMER | CKEN22_MEMC;
 
 	ezx_ssp_set_machinfo(&ezx_ssp_machinfo);