mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 22:15:55 +02:00
a95f9f92e2
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13619 3c298f89-4303-0410-b956-a3cf2f4a3e73
287 lines
7.8 KiB
Diff
Executable File
287 lines
7.8 KiB
Diff
Executable File
From 3d71204efba10914e339b411471877b81cf1e5d9 Mon Sep 17 00:00:00 2001
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From: warmcat <andy@warmcat.com>
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Date: Fri, 25 Jul 2008 23:06:01 +0100
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Subject: [PATCH] fix-lcm-reinit-post-resume.patch
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---
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arch/arm/mach-s3c2440/mach-gta02.c | 12 +++++++++
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drivers/mfd/glamo/glamo-core.c | 15 ++++++++++-
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drivers/mfd/glamo/glamo-spi-gpio.c | 38 ++++++++++++++++++++++++++--
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drivers/video/display/jbt6k74.c | 47 ++++++++++++++++++++++++++++++++----
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include/linux/glamofb.h | 1 +
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include/linux/jbt6k74.h | 8 ++++++
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6 files changed, 111 insertions(+), 10 deletions(-)
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create mode 100644 include/linux/jbt6k74.h
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diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
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index f2b1b66..750fd97 100644
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--- a/arch/arm/mach-s3c2440/mach-gta02.c
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+++ b/arch/arm/mach-s3c2440/mach-gta02.c
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@@ -76,6 +76,7 @@
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#include <asm/plat-s3c24xx/cpu.h>
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#include <asm/plat-s3c24xx/pm.h>
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#include <asm/plat-s3c24xx/udc.h>
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+#include <linux/jbt6k74.h>
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#include <linux/glamofb.h>
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@@ -756,10 +757,21 @@ static struct s3c2410_ts_mach_info gta02_ts_cfg = {
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/* SPI: LCM control interface attached to Glamo3362 */
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+void gta02_jbt6k74_reset(int devidx, int level)
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+{
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+ glamo_lcm_reset(level);
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+}
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+
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+
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+const struct jbt6k74_platform_data jbt6k74_pdata = {
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+ .reset = gta02_jbt6k74_reset,
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+};
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+
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static struct spi_board_info gta02_spi_board_info[] = {
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{
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.modalias = "jbt6k74",
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/* platform_data */
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+ .platform_data = &jbt6k74_pdata,
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/* controller_data */
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/* irq */
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.max_speed_hz = 10 * 1000 * 1000,
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diff --git a/drivers/mfd/glamo/glamo-core.c b/drivers/mfd/glamo/glamo-core.c
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index ffa4945..2076e61 100644
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--- a/drivers/mfd/glamo/glamo-core.c
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+++ b/drivers/mfd/glamo/glamo-core.c
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@@ -513,6 +513,17 @@ void glamo_engine_reset(struct glamo_core *glamo, enum glamo_engine engine)
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}
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EXPORT_SYMBOL_GPL(glamo_engine_reset);
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+void glamo_lcm_reset(int level)
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+{
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+ if (!glamo_handle)
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+ return;
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+
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+ glamo_gpio_setpin(glamo_handle, GLAMO_GPIO4, level);
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+ glamo_gpio_cfgpin(glamo_handle, GLAMO_GPIO4_OUTPUT);
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+
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+}
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+EXPORT_SYMBOL_GPL(glamo_lcm_reset);
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+
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enum glamo_pll {
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GLAMO_PLL1,
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GLAMO_PLL2,
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@@ -1142,8 +1153,8 @@ static int glamo_resume(struct platform_device *pdev)
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static struct platform_driver glamo_driver = {
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.probe = glamo_probe,
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.remove = glamo_remove,
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- .suspend = glamo_suspend,
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- .resume = glamo_resume,
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+ .suspend_late = glamo_suspend,
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+ .resume_early = glamo_resume,
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.driver = {
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.name = "glamo3362",
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.owner = THIS_MODULE,
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diff --git a/drivers/mfd/glamo/glamo-spi-gpio.c b/drivers/mfd/glamo/glamo-spi-gpio.c
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index 73926bd..eda7322 100644
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--- a/drivers/mfd/glamo/glamo-spi-gpio.c
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+++ b/drivers/mfd/glamo/glamo-spi-gpio.c
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@@ -224,14 +224,46 @@ static int glamo_spigpio_remove(struct platform_device *pdev)
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return 0;
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}
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-#define glamo_spigpio_suspend NULL
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+/*#define glamo_spigpio_suspend NULL
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#define glamo_spigpio_resume NULL
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+*/
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+
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+
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+#ifdef CONFIG_PM
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+static int glamo_spigpio_suspend(struct platform_device *pdev, pm_message_t state)
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+{
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+ return 0;
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+}
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+
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+static int glamo_spigpio_resume(struct platform_device *pdev)
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+{
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+ struct glamo_spigpio *sp = platform_get_drvdata(pdev);
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+
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+ if (!sp)
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+ return 0;
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+
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+ /* set state of spi pins */
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+ glamo_gpio_setpin(sp->glamo, sp->info->pin_clk, 0);
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+ glamo_gpio_setpin(sp->glamo, sp->info->pin_mosi, 0);
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+ glamo_gpio_setpin(sp->glamo, sp->info->pin_cs, 1);
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+
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+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_clk);
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+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_mosi);
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+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_cs);
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+ if (sp->info->pin_miso)
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+ glamo_gpio_cfgpin(sp->glamo, sp->info->pin_miso);
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+
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+ return 0;
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+}
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+#endif
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static struct platform_driver glamo_spi_drv = {
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.probe = glamo_spigpio_probe,
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.remove = glamo_spigpio_remove,
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- .suspend = glamo_spigpio_suspend,
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- .resume = glamo_spigpio_resume,
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+#ifdef CONFIG_PM
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+ .suspend_late = glamo_spigpio_suspend,
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+ .resume_early = glamo_spigpio_resume,
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+#endif
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.driver = {
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.name = "glamo-spi-gpio",
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.owner = THIS_MODULE,
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diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
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index d021d7e..d7e9442 100644
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--- a/drivers/video/display/jbt6k74.c
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+++ b/drivers/video/display/jbt6k74.c
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@@ -27,6 +27,8 @@
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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+#include <linux/workqueue.h>
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+#include <linux/jbt6k74.h>
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#include <linux/spi/spi.h>
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@@ -114,11 +116,15 @@ struct jbt_info {
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struct mutex lock; /* protects tx_buf and reg_cache */
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u16 tx_buf[8];
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u16 reg_cache[0xEE];
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+ struct work_struct work;
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};
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#define JBT_COMMAND 0x000
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#define JBT_DATA 0x100
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+static void jbt_resume_work(struct work_struct *work);
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+
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+
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static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
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{
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int rc;
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@@ -130,6 +136,9 @@ static int jbt_reg_write_nodata(struct jbt_info *jbt, u8 reg)
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1*sizeof(u16));
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if (rc == 0)
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jbt->reg_cache[reg] = 0;
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+ else
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+ printk(KERN_ERR"jbt_reg_write_nodata spi_write ret %d\n",
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+ rc);
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mutex_unlock(&jbt->lock);
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@@ -149,6 +158,8 @@ static int jbt_reg_write(struct jbt_info *jbt, u8 reg, u8 data)
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2*sizeof(u16));
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if (rc == 0)
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jbt->reg_cache[reg] = data;
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+ else
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+ printk(KERN_ERR"jbt_reg_write spi_write ret %d\n", rc);
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mutex_unlock(&jbt->lock);
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@@ -169,6 +180,8 @@ static int jbt_reg_write16(struct jbt_info *jbt, u8 reg, u16 data)
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3*sizeof(u16));
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if (rc == 0)
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jbt->reg_cache[reg] = data;
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+ else
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+ printk(KERN_ERR"jbt_reg_write16 spi_write ret %d\n", rc);
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mutex_unlock(&jbt->lock);
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@@ -563,6 +576,8 @@ static int __devinit jbt_probe(struct spi_device *spi)
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if (!jbt)
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return -ENOMEM;
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+ INIT_WORK(&jbt->work, jbt_resume_work);
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+
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jbt->spi_dev = spi;
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jbt->state = JBT_STATE_DEEP_STANDBY;
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mutex_init(&jbt->lock);
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@@ -618,28 +633,50 @@ static int __devexit jbt_remove(struct spi_device *spi)
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static int jbt_suspend(struct spi_device *spi, pm_message_t state)
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{
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struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
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+ struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
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/* Save mode for resume */
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jbt->last_state = jbt->state;
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jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
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+ (jbt6k74_pdata->reset)(0, 0);
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+
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return 0;
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}
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-static int jbt_resume(struct spi_device *spi)
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+static void jbt_resume_work(struct work_struct *work)
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{
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- struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
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+ struct jbt_info *jbt = container_of(work, struct jbt_info, work);
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+
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+ printk(KERN_INFO"jbt_resume_work waiting...\n");
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+ msleep(2000);
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+ printk(KERN_INFO"jbt_resume_work GO...\n");
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- jbt6k74_enter_state(jbt, jbt->last_state);
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+ jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
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+ msleep(100);
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switch (jbt->last_state) {
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- case JBT_STATE_NORMAL:
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case JBT_STATE_QVGA_NORMAL:
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- jbt6k74_display_onoff(jbt, 1);
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+ jbt6k74_enter_state(jbt, JBT_STATE_QVGA_NORMAL);
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break;
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default:
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+ jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
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break;
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}
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+ jbt6k74_display_onoff(jbt, 1);
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+
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+ printk(KERN_INFO"jbt_resume_work done...\n");
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+}
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+
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+static int jbt_resume(struct spi_device *spi)
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+{
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+ struct jbt_info *jbt = dev_get_drvdata(&spi->dev);
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+ struct jbt6k74_platform_data *jbt6k74_pdata = spi->dev.platform_data;
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+
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+ (jbt6k74_pdata->reset)(0, 1);
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+
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+ if (!schedule_work(&jbt->work))
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+ dev_err(&spi->dev, "Unable to schedule LCM wakeup work\n");
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return 0;
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}
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diff --git a/include/linux/glamofb.h b/include/linux/glamofb.h
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index 24742a2..75eefef 100644
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--- a/include/linux/glamofb.h
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+++ b/include/linux/glamofb.h
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@@ -35,5 +35,6 @@ struct glamofb_platform_data {
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void glamofb_cmd_mode(struct glamofb_handle *gfb, int on);
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int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val);
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+void glamo_lcm_reset(int level);
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#endif
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diff --git a/include/linux/jbt6k74.h b/include/linux/jbt6k74.h
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new file mode 100644
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index 0000000..3fbe178
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--- /dev/null
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+++ b/include/linux/jbt6k74.h
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@@ -0,0 +1,8 @@
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+#ifndef __JBT6K74_H__
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+#define __JBT6K74_H__
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+
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+struct jbt6k74_platform_data {
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+ void (* reset)(int devindex, int level);
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+};
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+
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+#endif
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--
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1.5.6.3
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