mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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fc54b9bf15
(stable-branch of Openmoko) git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
153 lines
4.3 KiB
Diff
153 lines
4.3 KiB
Diff
From fb42ce6724576fc173faf8abfb04aa2c36d213b7 Mon Sep 17 00:00:00 2001
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From: Andy Green <agreen@pads.home.warmcat.com>
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Date: Fri, 5 Dec 2008 11:03:59 +0000
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Subject: [PATCH]
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---
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drivers/video/display/jbt6k74.c | 68 ++++++++++++++-------------------------
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1 files changed, 24 insertions(+), 44 deletions(-)
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diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
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index 0635823..b1b5b1e 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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@@ -252,36 +252,22 @@ static int jbt_init_regs(struct jbt_info *jbt, int qvga)
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return rc ? -EIO : 0;
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}
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-int jbt6k74_display_onoff(struct jbt_info *jbt, int on)
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-{
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- if (on)
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- return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON);
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- else
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- return jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
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-}
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-EXPORT_SYMBOL_GPL(jbt6k74_display_onoff);
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-
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static int standby_to_sleep(struct jbt_info *jbt)
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{
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- static int once = 0;
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- if (!once++) {
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- int rc;
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-
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- /* three times command zero */
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- rc = jbt_reg_write_nodata(jbt, 0x00);
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- mdelay(1);
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- rc |= jbt_reg_write_nodata(jbt, 0x00);
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- mdelay(1);
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- rc |= jbt_reg_write_nodata(jbt, 0x00);
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- mdelay(1);
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-
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- /* deep standby out */
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- rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x17);
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-
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- return rc ? -EIO : 0;
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- }
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- else
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- return 0;
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+ int rc;
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+
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+ /* three times command zero */
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+ rc = jbt_reg_write_nodata(jbt, 0x00);
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+ mdelay(1);
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+ rc |= jbt_reg_write_nodata(jbt, 0x00);
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+ mdelay(1);
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+ rc |= jbt_reg_write_nodata(jbt, 0x00);
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+ mdelay(1);
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+
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+ /* deep standby out */
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+ rc |= jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x17);
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+
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+ return rc ? -EIO : 0;
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}
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static int sleep_to_normal(struct jbt_info *jbt)
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@@ -307,7 +293,7 @@ static int sleep_to_normal(struct jbt_info *jbt)
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rc |= jbt_init_regs(jbt, 0);
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/* Turn on display */
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- rc |= jbt6k74_display_onoff(jbt, 1);
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+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON);
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return rc ? -EIO : 0;
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}
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@@ -335,7 +321,7 @@ static int sleep_to_qvga_normal(struct jbt_info *jbt)
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rc |= jbt_init_regs(jbt, 1);
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/* Turn on display */
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- rc |= jbt6k74_display_onoff(jbt, 1);
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+ rc |= jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_ON);
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return rc ? -EIO : 0;
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}
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@@ -344,8 +330,7 @@ static int normal_to_sleep(struct jbt_info *jbt)
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{
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int rc;
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- rc = jbt6k74_display_onoff(jbt, 0);
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- rc |= jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
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+ rc = jbt_reg_write_nodata(jbt, JBT_REG_DISPLAY_OFF);
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rc |= jbt_reg_write16(jbt, JBT_REG_OUTPUT_CONTROL, 0x8002);
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rc |= jbt_reg_write_nodata(jbt, JBT_REG_SLEEP_IN);
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@@ -354,11 +339,7 @@ static int normal_to_sleep(struct jbt_info *jbt)
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static int sleep_to_standby(struct jbt_info *jbt)
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{
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-#if 0
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return jbt_reg_write(jbt, JBT_REG_POWER_ON_OFF, 0x00);
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-#else
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- return 0;
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-#endif
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}
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/* frontend function */
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@@ -576,11 +557,10 @@ static int fb_notifier_callback(struct notifier_block *self,
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switch (fb_blank) {
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case FB_BLANK_UNBLANK:
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dev_info(&jbt->spi_dev->dev, "**** jbt6k74 unblank\n");
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+ jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
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break;
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case FB_BLANK_NORMAL:
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dev_info(&jbt->spi_dev->dev, "**** jbt6k74 normal\n");
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- /*jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
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- jbt6k74_display_onoff(jbt, 1); */
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break;
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case FB_BLANK_VSYNC_SUSPEND:
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dev_info(&jbt->spi_dev->dev, "**** jbt6k74 vsync suspend\n");
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@@ -591,11 +571,12 @@ static int fb_notifier_callback(struct notifier_block *self,
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* a visible artefact (white screen) before the backlight
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* is dimmed to a dark enough level */
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/* jbt6k74_enter_state(jbt, JBT_STATE_SLEEP); */
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- /*jbt6k74_display_onoff(jbt, 0);*/
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break;
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case FB_BLANK_POWERDOWN:
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dev_info(&jbt->spi_dev->dev, "**** jbt6k74 powerdown\n");
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- /*jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);*/
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+ /* FIXME: deep standby causes WSOD on certain devices. We use
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+ * sleep as workaround */
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+ jbt6k74_enter_state(jbt, JBT_STATE_SLEEP);
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break;
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}
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@@ -692,13 +673,12 @@ static int jbt_suspend(struct spi_device *spi, pm_message_t state)
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/* Save mode for resume */
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jbt->last_state = jbt->state;
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-
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- jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
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+ /* FIXME: deep standby causes WSOD on certain devices. We use
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+ * sleep as workaround */
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+ jbt6k74_enter_state(jbt, JBT_STATE_SLEEP);
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jbt->have_resumed = 0;
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-/* (jbt6k74_pdata->reset)(0, 0); */
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-
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dev_info(&spi->dev, "**** jbt6k74 suspend end\n");
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return 0;
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--
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1.5.6.5
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