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[s3c24xx] Add 2.6.31 patches

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17665 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
lars
2009-09-21 18:29:46 +00:00
parent dac1d868d3
commit e2813918b9
156 changed files with 51350 additions and 0 deletions
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72
target/linux/s3c24xx/patches-2.6.31/002-s3c-pm.patch Normal file
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@@ -0,0 +1,72 @@
diff --git a/arch/arm/plat-s3c/pm.c b/arch/arm/plat-s3c/pm.c
index 8d97db2..a7667d5 100644
--- a/arch/arm/plat-s3c/pm.c
+++ b/arch/arm/plat-s3c/pm.c
@@ -301,11 +301,14 @@ static int s3c_pm_enter(suspend_state_t state)
s3c_pm_arch_stop_clocks();
- /* s3c_cpu_save will also act as our return point from when
- * we resume as it saves its own register state and restores it
- * during the resume. */
+ /* s3c2410_cpu_save will also act as our return point from when
+ * we resume as it saves its own register state, so use the return
+ * code to differentiate return from save and return from sleep */
- s3c_cpu_save(regs_save);
+ if (s3c_cpu_save(regs_save) == 0) {
+ flush_cache_all();
+ pm_cpu_sleep();
+ }
/* restore the cpu state using the kernel's cpu init code. */
diff --git a/arch/arm/plat-s3c24xx/irq-pm.c b/arch/arm/plat-s3c24xx/irq-pm.c
index b7acf1a..925514e 100644
--- a/arch/arm/plat-s3c24xx/irq-pm.c
+++ b/arch/arm/plat-s3c24xx/irq-pm.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/sysdev.h>
+#include <linux/irq.h>
#include <plat/cpu.h>
#include <plat/pm.h>
@@ -80,7 +81,9 @@ int s3c24xx_irq_suspend(struct sys_device *dev, pm_message_t state)
int s3c24xx_irq_resume(struct sys_device *dev)
{
- unsigned int i;
+ unsigned int i, irq;
+ unsigned long eintpnd;
+ struct irq_desc *desc;
for (i = 0; i < ARRAY_SIZE(save_extint); i++)
__raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
@@ -91,5 +94,25 @@ int s3c24xx_irq_resume(struct sys_device *dev)
s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
__raw_writel(save_eintmask, S3C24XX_EINTMASK);
+ /*
+ * ACK those interrupts which are now masked and pending.
+ * Level interrupts if not ACKed here, create an interrupt storm
+ * because they are not handled at all.
+ */
+
+ eintpnd = __raw_readl(S3C24XX_EINTPEND);
+
+ eintpnd &= save_eintmask;
+ eintpnd &= ~0xff; /* ignore lower irqs */
+
+ while (eintpnd) {
+ irq = __ffs(eintpnd);
+ eintpnd &= ~(1 << irq);
+
+ irq += (IRQ_EINT4 - 4);
+ desc = irq_to_desc(irq);
+ desc->chip->ack(irq);
+ }
+
return 0;
}