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From e73ac678d32e5748c73902591922b0e9b5b6c182 Mon Sep 17 00:00:00 2001
From: Jiri Pinkava <jiri.pinkava@vscht.cz>
Date: Thu, 27 May 2010 15:53:03 +0200
Subject: [PATCH 12/14] n30: Basic suspend to ram for Acer n30 / n35
Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
---
arch/arm/Makefile | 1 +
arch/arm/mach-s3c2410/Kconfig | 1 +
arch/arm/mach-s3c2410/Makefile.boot | 11 +++++++----
arch/arm/mach-s3c2410/include/mach/h1940.h | 1 +
arch/arm/mach-s3c2410/mach-n30.c | 22 ++++++++++++++++++++++
arch/arm/mach-s3c2410/pm-h1940.S | 2 ++
arch/arm/mach-s3c2410/sleep.S | 3 +++
7 files changed, 37 insertions(+), 4 deletions(-)
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 59c1ce8..40ec8d4 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -119,6 +119,7 @@ textofs-y := 0x00008000
textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
# We don't want the htc bootloader to corrupt kernel during resume
textofs-$(CONFIG_PM_H1940) := 0x00108000
+textofs-$(CONFIG_MACH_N35) := 0x00208000
# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
ifeq ($(CONFIG_ARCH_SA1100),y)
textofs-$(CONFIG_SA1111) := 0x00208000
diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 1d55349..bcb7061 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -98,6 +98,7 @@ config MACH_N30
bool "Acer N30 family"
select CPU_S3C2410
select MACH_N35
+ select PM_H1940 if PM
select S3C_DEV_USB_HOST
select S3C_DEV_NAND
select S3C2410_SETUP_TS
diff --git a/arch/arm/mach-s3c2410/Makefile.boot b/arch/arm/mach-s3c2410/Makefile.boot
index 58c1dd7..aaf5bdc 100644
--- a/arch/arm/mach-s3c2410/Makefile.boot
+++ b/arch/arm/mach-s3c2410/Makefile.boot
@@ -1,7 +1,10 @@
+zreladdr-y := 0x30008000
+params_phys-y := 0x30000100
ifeq ($(CONFIG_PM_H1940),y)
- zreladdr-y := 0x30108000
+ zreladdr-y := 0x30108000
params_phys-y := 0x30100100
-else
- zreladdr-y := 0x30008000
- params_phys-y := 0x30000100
+endif
+ifeq ($(CONFIG_MACH_N35),y)
+ zreladdr-y := 0x30208000
+ params_phys-y := 0x30200100
endif
--- linux-3.1.6/arch/arm/mach-s3c2410/include/mach/h1940.h.orig 2011-12-21 22:00:46.000000000 +0100
+++ linux-3.1.6/arch/arm/mach-s3c2410/include/mach/h1940.h 2011-12-31 17:01:21.985102436 +0100
@@ -17,6 +17,8 @@
#define H1940_SUSPEND_CHECK (0x30080000)
extern void h1940_pm_return(void);
+extern void h1940_pm_return_end(void);
+
extern int h1940_led_blink_set(unsigned gpio, int state,
unsigned long *delay_on, unsigned long *delay_off);
--- linux-3.1.6/arch/arm/mach-s3c2410/mach-n30.c.orig 2011-12-31 16:57:30.185718019 +0100
+++ linux-3.1.6/arch/arm/mach-s3c2410/mach-n30.c 2011-12-31 17:01:45.708299675 +0100
@@ -19,6 +19,7 @@
#include <linux/delay.h>
#include <linux/gpio_keys.h>
+#include <linux/memblock.h>
#include <linux/init.h>
#include <linux/gpio.h>
#include <linux/input.h>
@@ -27,6 +28,7 @@
#include <linux/platform_device.h>
#include <linux/pwm_backlight.h>
#include <linux/serial_core.h>
+#include <linux/sysdev.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <linux/mmc/host.h>
@@ -36,6 +38,7 @@
#include <asm/mach-types.h>
#include <mach/fb.h>
+#include <mach/h1940.h>
#include <mach/leds-gpio.h>
#include <mach/regs-gpio.h>
#include <mach/regs-lcd.h>
@@ -49,6 +52,7 @@
#include <plat/clock.h>
#include <plat/cpu.h>
+#include <plat/pm.h>
#include <plat/devs.h>
#include <plat/mci.h>
#include <plat/nand.h>
@@ -58,6 +62,8 @@
#include <video/platform_lcd.h>
+#define N35_SUSPEND_RESUMEAT (S3C2410_SDRAM_PA + 0x201000)
+
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/nand_ecc.h>
@@ -796,12 +802,26 @@
s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
}
+/* Acer N30/N35 need to reserve this memory to suspend */
+static void __init n30_reserve(void)
+{
+ memblock_reserve(0x30201000, 0x1000);
+}
+
/* GPB3 is the line that controls the pull-up for the USB D+ line */
static void __init n30_init(void)
{
WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
+ /* setup PM */
+
+#ifdef CONFIG_PM_H1940
+ memcpy(phys_to_virt(N35_SUSPEND_RESUMEAT), h1940_pm_return,
+ h1940_pm_return_end - h1940_pm_return);
+#endif
+ s3c_pm_init();
+
s3c24xx_fb_set_platdata(&n30_fb_info);
s3c24xx_ts_set_platdata(&n30_ts_cfg);
s3c24xx_udc_set_platdata(&n30_udc_cfg);
@@ -867,6 +887,7 @@
.init_machine = n30_init,
.init_irq = s3c24xx_init_irq,
.map_io = n30_map_io,
+ .reserve = n30_reserve,
MACHINE_END
MACHINE_START(N35, "Acer-N35")
@@ -877,4 +898,5 @@
.init_machine = n30_init,
.init_irq = s3c24xx_init_irq,
.map_io = n30_map_io,
+ .reserve = n30_reserve,
MACHINE_END
diff --git a/arch/arm/mach-s3c2410/pm-h1940.S b/arch/arm/mach-s3c2410/pm-h1940.S
index c93bf2d..020ed0c 100644
--- a/arch/arm/mach-s3c2410/pm-h1940.S
+++ b/arch/arm/mach-s3c2410/pm-h1940.S
@@ -27,7 +27,9 @@
.text
.global h1940_pm_return
+ .global h1940_pm_return_end
h1940_pm_return:
mov r0, #S3C2410_PA_GPIO
ldr pc, [ r0, #S3C2410_GSTATUS3 - S3C24XX_VA_GPIO ]
+h1940_pm_return_end:
diff --git a/arch/arm/mach-s3c2410/sleep.S b/arch/arm/mach-s3c2410/sleep.S
index dd5b638..84ecef3 100644
--- a/arch/arm/mach-s3c2410/sleep.S
+++ b/arch/arm/mach-s3c2410/sleep.S
@@ -51,6 +51,9 @@ ENTRY(s3c2410_cpu_suspend)
orr r7, r7, #S3C2410_REFRESH_SELF @ SDRAM sleep command
orr r8, r8, #S3C2410_MISCCR_SDSLEEP @ SDRAM power-down signals
+ @ turn off data port pull ups
+ orr r8, r8, #S3C2410_MISCCR_SPUCR_HDIS
+ orr r8, r8, #S3C2410_MISCCR_SPUCR_LDIS
orr r9, r9, #S3C2410_CLKCON_POWER @ power down command
teq pc, #0 @ first as a trial-run to load cache
--
1.7.3.1
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