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authorwarmcat <andy@warmcat.com>2008-11-19 17:09:33 +0000
committerAndy Green <agreen@pads.home.warmcat.com>2008-11-19 17:09:33 +0000
commit72389bf132fb8cb7c05b2e5b360e240676d53e4c (patch)
tree89a678132d1a7db1e573f6e5b22dca3b609e2c2a /drivers/video/display
parent695aab30a59b56143489a17b6b4268b3a9548148 (diff)
fix-lcm-reinit-post-resume.patch
Diffstat (limited to 'drivers/video/display')
-rw-r--r--drivers/video/display/jbt6k74.c47
1 files changed, 42 insertions, 5 deletions
diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
index d021d7e34c0..d7e94421ae2 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;
}