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openwrt/target/linux/s3c24xx/patches/0083-fix-lcm-reinit-post-resume.patch.patch

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From 3d71204efba10914e339b411471877b81cf1e5d9 Mon Sep 17 00:00:00 2001
From: warmcat <andy@warmcat.com>
Date: Fri, 25 Jul 2008 23:06:01 +0100
Subject: [PATCH] fix-lcm-reinit-post-resume.patch
---
arch/arm/mach-s3c2440/mach-gta02.c | 12 +++++++++
drivers/mfd/glamo/glamo-core.c | 15 ++++++++++-
drivers/mfd/glamo/glamo-spi-gpio.c | 38 ++++++++++++++++++++++++++--
drivers/video/display/jbt6k74.c | 47 ++++++++++++++++++++++++++++++++----
include/linux/glamofb.h | 1 +
include/linux/jbt6k74.h | 8 ++++++
6 files changed, 111 insertions(+), 10 deletions(-)
create mode 100644 include/linux/jbt6k74.h
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
index f2b1b66..750fd97 100644
--- a/arch/arm/mach-s3c2440/mach-gta02.c
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
@@ -76,6 +76,7 @@
#include <asm/plat-s3c24xx/cpu.h>
#include <asm/plat-s3c24xx/pm.h>
#include <asm/plat-s3c24xx/udc.h>
+#include <linux/jbt6k74.h>
#include <linux/glamofb.h>
@@ -756,10 +757,21 @@ static struct s3c2410_ts_mach_info gta02_ts_cfg = {
/* SPI: LCM control interface attached to Glamo3362 */
+void gta02_jbt6k74_reset(int devidx, int level)
+{
+ glamo_lcm_reset(level);
+}
+
+
+const struct jbt6k74_platform_data jbt6k74_pdata = {
+ .reset = gta02_jbt6k74_reset,
+};
+
static struct spi_board_info gta02_spi_board_info[] = {
{
.modalias = "jbt6k74",
/* platform_data */
+ .platform_data = &jbt6k74_pdata,
/* controller_data */
/* irq */
.max_speed_hz = 10 * 1000 * 1000,
diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c
index ffa4945..2076e61 100644
--- a/drivers/mfd/glamo/glamo-core.c
+++ b/drivers/mfd/glamo/glamo-core.c
@@ -513,6 +513,17 @@ void glamo_engine_reset(struct glamo_core *glamo, enum glamo_engine engine)
}
EXPORT_SYMBOL_GPL(glamo_engine_reset);
+void glamo_lcm_reset(int level)
+{
+ if (!glamo_handle)
+ return;
+
+ glamo_gpio_setpin(glamo_handle, GLAMO_GPIO4, level);
+ glamo_gpio_cfgpin(glamo_handle, GLAMO_GPIO4_OUTPUT);
+
+}
+EXPORT_SYMBOL_GPL(glamo_lcm_reset);
+
enum glamo_pll {
GLAMO_PLL1,
GLAMO_PLL2,
@@ -1142,8 +1153,8 @@ static int glamo_resume(struct platform_device *pdev)
static struct platform_driver glamo_driver = {
.probe = glamo_probe,
.remove = glamo_remove,
- .suspend = glamo_suspend,
- .resume = glamo_resume,
+ .suspend_late = glamo_suspend,
+ .resume_early = glamo_resume,
.driver = {
.name = "glamo3362",
.owner = THIS_MODULE,
diff --git a/drivers/mfd/glamo/glamo-spi-gpio.c b/drivers/mfd/glamo/glamo-spi-gpio.c
index 73926bd..eda7322 100644
--- a/drivers/mfd/glamo/glamo-spi-gpio.c
+++ b/drivers/mfd/glamo/glamo-spi-gpio.c
@@ -224,14 +224,46 @@ static int glamo_spigpio_remove(struct platform_device *pdev)
return 0;
}
-#define glamo_spigpio_suspend NULL
+/*#define glamo_spigpio_suspend NULL
#define glamo_spigpio_resume NULL
+*/
+
+
+#ifdef CONFIG_PM
+static int glamo_spigpio_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ return 0;
+}
+
+static int glamo_spigpio_resume(struct platform_device *pdev)
+{
+ struct glamo_spigpio *sp = platform_get_drvdata(pdev);
+
+ if (!sp)
+ return 0;
+
+ /* set state of spi pins */
+ glamo_gpio_setpin(sp->glamo, sp->info->pin_clk, 0);
+ glamo_gpio_setpin(sp->glamo, sp->info->pin_mosi, 0);
+ glamo_gpio_setpin(sp->glamo, sp->info->pin_cs, 1);
+
+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_clk);
+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_mosi);
+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_cs);
+ if (sp->info->pin_miso)
+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_miso);
+
+ return 0;
+}
+#endif
static struct platform_driver glamo_spi_drv = {
.probe = glamo_spigpio_probe,
.remove = glamo_spigpio_remove,
- .suspend = glamo_spigpio_suspend,
- .resume = glamo_spigpio_resume,
+#ifdef CONFIG_PM
+ .suspend_late = glamo_spigpio_suspend,
+ .resume_early = glamo_spigpio_resume,
+#endif
.driver = {
.name = "glamo-spi-gpio",
.owner = THIS_MODULE,
diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
index d021d7e..d7e9442 100644
--- a/drivers/video/display/jbt6k74.c
+++ b/drivers/video/display/jbt6k74.c
@@ -27,6 +27,8 @@
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
+#include <linux/workqueue.h>
+#include <linux/jbt6k74.h>
#include <linux/spi/spi.h>
@@ -114,11 +116,15 @@ struct jbt_info {
struct mutex lock; /* protects tx_buf and reg_cache */
u16 tx_buf[8];
u16 reg_cache[0xEE];
+ struct work_struct work;
};
#define JBT_COMMAND 0x000
#define JBT_DATA 0x100
+static void jbt_resume_work(struct work_struct *work);
+
+
static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
{
int rc;
@@ -130,6 +136,9 @@ static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
1*sizeof(u16));
if (rc == 0)
jbt->reg_cache[reg] = 0;
+ else
+ printk(KERN_ERR"jbt_reg_write_nodata spi_write ret %d\n",
+ rc);
mutex_unlock(&jbt->lock);
@@ -149,6 +158,8 @@ static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data)
2*sizeof(u16));
if (rc == 0)
jbt->reg_cache[reg] = data;
+ else
+ printk(KERN_ERR"jbt_reg_write spi_write ret %d\n", rc);
mutex_unlock(&jbt->lock);
@@ -169,6 +180,8 @@ static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data)
3*sizeof(u16));
if (rc == 0)
jbt->reg_cache[reg] = data;
+ else
+ printk(KERN_ERR"jbt_reg_write16 spi_write ret %d\n", rc);
mutex_unlock(&jbt->lock);
@@ -563,6 +576,8 @@ static int __devinit jbt_probe(struct spi_device *spi)
if (!jbt)
return -ENOMEM;
+ INIT_WORK(&jbt->work, jbt_resume_work);
+
jbt->spi_dev = spi;
jbt->state = JBT_STATE_DEEP_STANDBY;
mutex_init(&jbt->lock);
@@ -618,28 +633,50 @@ static int __devexit jbt_remove(struct spi_device *spi)
static int jbt_suspend(struct spi_device *spi, pm_message_t state)
{
struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
+ struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
/* Save mode for resume */
jbt->last_state = jbt->state;
jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
+ (jbt6k74_pdata->reset)(0, 0);
+
return 0;
}
-static int jbt_resume(struct spi_device *spi)
+static void jbt_resume_work(struct work_struct *work)
{
- struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
+ struct jbt_info *jbt = container_of(work, struct jbt_info, work);
+
+ printk(KERN_INFO"jbt_resume_work waiting...\n");
+ msleep(2000);
+ printk(KERN_INFO"jbt_resume_work GO...\n");
- jbt6k74_enter_state(jbt, jbt->last_state);
+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
+ msleep(100);
switch (jbt->last_state) {
- case JBT_STATE_NORMAL:
case JBT_STATE_QVGA_NORMAL:
- jbt6k74_display_onoff(jbt, 1);
+ jbt6k74_enter_state(jbt, JBT_STATE_QVGA_NORMAL);
break;
default:
+ jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
break;
}
+ jbt6k74_display_onoff(jbt, 1);
+
+ printk(KERN_INFO"jbt_resume_work done...\n");
+}
+
+static int jbt_resume(struct spi_device *spi)
+{
+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
+ struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
+
+ (jbt6k74_pdata->reset)(0, 1);
+
+ if (!schedule_work(&jbt->work))
+ dev_err(&spi->dev, "Unable to schedule LCM wakeup work\n");
return 0;
}
diff --git a/include/linux/glamofb.h b/include/linux/glamofb.h
index 24742a2..75eefef 100644
--- a/include/linux/glamofb.h
+++ b/include/linux/glamofb.h
@@ -35,5 +35,6 @@ struct glamofb_platform_data {
void glamofb_cmd_mode(struct glamofb_handle *gfb, int on);
int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val);
+void glamo_lcm_reset(int level);
#endif
diff --git a/include/linux/jbt6k74.h b/include/linux/jbt6k74.h
new file mode 100644
index 0000000..3fbe178
--- /dev/null
+++ b/include/linux/jbt6k74.h
@@ -0,0 +1,8 @@
+#ifndef __JBT6K74_H__
+#define __JBT6K74_H__
+
+struct jbt6k74_platform_data {
+ void (* reset)(int devindex, int level);
+};
+
+#endif
--
1.5.6.3
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