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OMAP: DSS2: don't power off a panel twice

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If we blank the panel by
echo 1 > /sys/devices/platform/omapfb/graphics/fb0/blank

Then, we reboot the sytem, the kernel will crash at
drivers/video/omap2/dss/core.c:323

This is because the panel is closed twice. Now check the state of a dssdev
to forbid a panel is power on or power off twice.

Signed-off-by: Stanley.Miao <stanley.miao@windriver.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
This commit is contained in:
Stanley.Miao 2010-09-03 05:03:48 +02:00 committed by Tomi Valkeinen
parent 41814cfc01
commit 18016e35d4
6 changed files with 36 additions and 0 deletions
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6
drivers/video/omap2/displays/panel-acx565akm.c
View File

@ -587,6 +587,9 @@ static int acx_panel_power_on(struct omap_dss_device *dssdev)
dev_dbg(&dssdev->dev, "%s\n", __func__);
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
mutex_lock(&md->mutex);
r = omapdss_sdi_display_enable(dssdev);
@ -644,6 +647,9 @@ static void acx_panel_power_off(struct omap_dss_device *dssdev)
dev_dbg(&dssdev->dev, "%s\n", __func__);
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
mutex_lock(&md->mutex);
if (!md->enabled) {

6
drivers/video/omap2/displays/panel-generic.c
View File

@ -39,6 +39,9 @@ static int generic_panel_power_on(struct omap_dss_device *dssdev)
{
int r;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
@ -58,6 +61,9 @@ err0:
static void generic_panel_power_off(struct omap_dss_device *dssdev)
{
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);

6
drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c
View File

@ -43,6 +43,9 @@ static int sharp_lq_panel_power_on(struct omap_dss_device *dssdev)
{
int r;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
@ -65,6 +68,9 @@ err0:
static void sharp_lq_panel_power_off(struct omap_dss_device *dssdev)
{
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);

6
drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
View File

@ -135,6 +135,9 @@ static int sharp_ls_power_on(struct omap_dss_device *dssdev)
{
int r = 0;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
@ -157,6 +160,9 @@ err0:
static void sharp_ls_power_off(struct omap_dss_device *dssdev)
{
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);

6
drivers/video/omap2/displays/panel-toppoly-tdo35s.c
View File

@ -46,6 +46,9 @@ static int toppoly_tdo_panel_power_on(struct omap_dss_device *dssdev)
{
int r;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
@ -65,6 +68,9 @@ err0:
static void toppoly_tdo_panel_power_off(struct omap_dss_device *dssdev)
{
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
if (dssdev->platform_disable)
dssdev->platform_disable(dssdev);

6
drivers/video/omap2/displays/panel-tpo-td043mtea1.c
View File

@ -269,6 +269,9 @@ static int tpo_td043_power_on(struct omap_dss_device *dssdev)
int nreset_gpio = dssdev->reset_gpio;
int r;
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
return 0;
r = omapdss_dpi_display_enable(dssdev);
if (r)
goto err0;
@ -308,6 +311,9 @@ static void tpo_td043_power_off(struct omap_dss_device *dssdev)
struct tpo_td043_device *tpo_td043 = dev_get_drvdata(&dssdev->dev);
int nreset_gpio = dssdev->reset_gpio;
if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
return;
tpo_td043_write(tpo_td043->spi, 3,
TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM);