1 files changed, 87 insertions, 10 deletions

diff --git a/arch/sh/boards/mach-hp6xx/pm.c b/arch/sh/boards/mach-hp6xx/pm.c
index e96684def78..8b50cf763c0 100644
--- a/arch/sh/boards/mach-hp6xx/pm.c
+++ b/arch/sh/boards/mach-hp6xx/pm.c
@@ -10,15 +10,92 @@
 #include <linux/suspend.h>
 #include <linux/errno.h>
 #include <linux/time.h>
+#include <linux/delay.h>
+#include <linux/gfp.h>
 #include <asm/io.h>
 #include <asm/hd64461.h>
-#include <asm/hp6xx.h>
+#include <asm/bl_bit.h>
+#include <mach/hp6xx.h>
 #include <cpu/dac.h>
-#include <asm/pm.h>
+#include <asm/freq.h>
+#include <asm/watchdog.h>
+
+#define INTR_OFFSET	0x600
 
 #define STBCR		0xffffff82
 #define STBCR2		0xffffff88
 
+#define STBCR_STBY	0x80
+#define STBCR_MSTP2	0x04
+
+#define MCR		0xffffff68
+#define RTCNT		0xffffff70
+
+#define MCR_RMODE	2
+#define MCR_RFSH	4
+
+extern u8 wakeup_start;
+extern u8 wakeup_end;
+
+static void pm_enter(void)
+{
+	u8 stbcr, csr;
+	u16 frqcr, mcr;
+	u32 vbr_new, vbr_old;
+
+	set_bl_bit();
+
+	/* set wdt */
+	csr = sh_wdt_read_csr();
+	csr &= ~WTCSR_TME;
+	csr |= WTCSR_CKS_4096;
+	sh_wdt_write_csr(csr);
+	csr = sh_wdt_read_csr();
+	sh_wdt_write_cnt(0);
+
+	/* disable PLL1 */
+	frqcr = __raw_readw(FRQCR);
+	frqcr &= ~(FRQCR_PLLEN | FRQCR_PSTBY);
+	__raw_writew(frqcr, FRQCR);
+
+	/* enable standby */
+	stbcr = __raw_readb(STBCR);
+	__raw_writeb(stbcr | STBCR_STBY | STBCR_MSTP2, STBCR);
+
+	/* set self-refresh */
+	mcr = __raw_readw(MCR);
+	__raw_writew(mcr & ~MCR_RFSH, MCR);
+
+	/* set interrupt handler */
+	asm volatile("stc vbr, %0" : "=r" (vbr_old));
+	vbr_new = get_zeroed_page(GFP_ATOMIC);
+	udelay(50);
+	memcpy((void*)(vbr_new + INTR_OFFSET),
+	       &wakeup_start, &wakeup_end - &wakeup_start);
+	asm volatile("ldc %0, vbr" : : "r" (vbr_new));
+
+	__raw_writew(0, RTCNT);
+	__raw_writew(mcr | MCR_RFSH | MCR_RMODE, MCR);
+
+	cpu_sleep();
+
+	asm volatile("ldc %0, vbr" : : "r" (vbr_old));
+
+	free_page(vbr_new);
+
+	/* enable PLL1 */
+	frqcr = __raw_readw(FRQCR);
+	frqcr |= FRQCR_PSTBY;
+	__raw_writew(frqcr, FRQCR);
+	udelay(50);
+	frqcr |= FRQCR_PLLEN;
+	__raw_writew(frqcr, FRQCR);
+
+	__raw_writeb(stbcr, STBCR);
+
+	clear_bl_bit();
+}
+
 static int hp6x0_pm_enter(suspend_state_t state)
 {
 	u8 stbcr, stbcr2;
@@ -39,21 +116,21 @@ static int hp6x0_pm_enter(suspend_state_t state)
 	outw(hd64461_stbcr, HD64461_STBCR);
 #endif
 
-	ctrl_outb(0x1f, DACR);
+	__raw_writeb(0x1f, DACR);
 
-	stbcr = ctrl_inb(STBCR);
-	ctrl_outb(0x01, STBCR);
+	stbcr = __raw_readb(STBCR);
+	__raw_writeb(0x01, STBCR);
 
-	stbcr2 = ctrl_inb(STBCR2);
-	ctrl_outb(0x7f , STBCR2);
+	stbcr2 = __raw_readb(STBCR2);
+	__raw_writeb(0x7f , STBCR2);
 
 	outw(0xf07f, HD64461_SCPUCR);
 
 	pm_enter();
 
 	outw(0, HD64461_SCPUCR);
-	ctrl_outb(stbcr, STBCR);
-	ctrl_outb(stbcr2, STBCR2);
+	__raw_writeb(stbcr, STBCR);
+	__raw_writeb(stbcr2, STBCR2);
 
 #ifdef CONFIG_HD64461_ENABLER
 	hd64461_stbcr = inw(HD64461_STBCR);
@@ -67,7 +144,7 @@ static int hp6x0_pm_enter(suspend_state_t state)
 	return 0;
 }
 
-static struct platform_suspend_ops hp6x0_pm_ops = {
+static const struct platform_suspend_ops hp6x0_pm_ops = {
 	.enter		= hp6x0_pm_enter,
 	.valid		= suspend_valid_only_mem,
 };