From: Bryan Wu <bryan.wu@canonical.com>
To: bryan.wu@canonical.com,
"Stanley.Miao" <stanley.miao@windriver.com>,
linux-omap@vger.kernel.org
Cc: lwalkera@ieee.org, lwalkera@gmail.com, tomi.valkeinen@nokia.com
Subject: Re: [PATCH V2] OMAP: DSS2: don't power off a panel twice
Date: Tue, 17 Aug 2010 17:01:33 +0800 [thread overview]
Message-ID: <4C6A4FED.5020006@canonical.com> (raw)
In-Reply-To: <4C624850.3060709@canonical.com>
Is there any feedback about this patch,
Tested-by: Bryan Wu <bryan.wu@canonical.com>
-Bryan
On 08/11/2010 02:50 PM, Bryan Wu wrote:
> Tested on my Beagle board. It fixed the issue.
>
> Thanks,
> -Bryan
>
> On 08/11/2010 11:19 AM, Stanley.Miao wrote:
>> 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>
>> ---
>> drivers/video/omap2/displays/panel-acx565akm.c | 6 ++++++
>> drivers/video/omap2/displays/panel-generic.c | 6 ++++++
>> .../video/omap2/displays/panel-sharp-lq043t1dg01.c | 6 ++++++
>> .../video/omap2/displays/panel-sharp-ls037v7dw01.c | 6 ++++++
>> drivers/video/omap2/displays/panel-taal.c | 6 ++++++
>> .../video/omap2/displays/panel-toppoly-tdo35s.c | 6 ++++++
>> .../video/omap2/displays/panel-tpo-td043mtea1.c | 6 ++++++
>> 7 files changed, 42 insertions(+), 0 deletions(-)
>>
>> diff --git a/drivers/video/omap2/displays/panel-acx565akm.c b/drivers/video/omap2/displays/panel-acx565akm.c
>> index 1f8eb70..374cbeb 100644
>> --- a/drivers/video/omap2/displays/panel-acx565akm.c
>> +++ b/drivers/video/omap2/displays/panel-acx565akm.c
>> @@ -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);
>> @@ -642,6 +645,9 @@ 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) {
>> diff --git a/drivers/video/omap2/displays/panel-generic.c b/drivers/video/omap2/displays/panel-generic.c
>> index 300eff5..395a68d 100644
>> --- a/drivers/video/omap2/displays/panel-generic.c
>> +++ b/drivers/video/omap2/displays/panel-generic.c
>> @@ -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);
>>
>> diff --git a/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c b/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c
>> index 1026746..0c6896c 100644
>> --- a/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c
>> +++ b/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c
>> @@ -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);
>>
>> diff --git a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
>> index 7d9eb2b..9a138f6 100644
>> --- a/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
>> +++ b/drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c
>> @@ -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);
>>
>> diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c
>> index aaf5d30..c649f06 100644
>> --- a/drivers/video/omap2/displays/panel-taal.c
>> +++ b/drivers/video/omap2/displays/panel-taal.c
>> @@ -635,6 +635,9 @@ static int taal_power_on(struct omap_dss_device *dssdev)
>> u8 id1, id2, id3;
>> int r;
>>
>> + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
>> + return 0;
>> +
>> if (dssdev->platform_enable) {
>> r = dssdev->platform_enable(dssdev);
>> if (r)
>> @@ -715,6 +718,9 @@ static void taal_power_off(struct omap_dss_device *dssdev)
>> {
>> struct taal_data *td = dev_get_drvdata(&dssdev->dev);
>>
>> + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
>> + return;
>> +
>> dsi_bus_lock();
>>
>> cancel_delayed_work(&td->esd_work);
>> diff --git a/drivers/video/omap2/displays/panel-toppoly-tdo35s.c b/drivers/video/omap2/displays/panel-toppoly-tdo35s.c
>> index fa434ca..49e1dec 100644
>> --- a/drivers/video/omap2/displays/panel-toppoly-tdo35s.c
>> +++ b/drivers/video/omap2/displays/panel-toppoly-tdo35s.c
>> @@ -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);
>>
>> diff --git a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
>> index e866e76..dbe9d43 100644
>> --- a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
>> +++ b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
>> @@ -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);
>>
>
>
next prev parent reply other threads:[~2010-08-17 9:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-11 3:19 [PATCH V2] OMAP: DSS2: don't power off a panel twice Stanley.Miao
2010-08-11 6:50 ` Bryan Wu
2010-08-17 9:01 ` Bryan Wu [this message]
2010-08-17 9:27 ` stanley.miao
2010-08-17 9:27 ` stanley.miao
2010-08-17 9:48 ` Bryan Wu
2010-08-17 9:48 ` Bryan Wu
2010-08-17 10:34 ` Tomi Valkeinen
2010-09-03 2:52 ` stanley.miao
2010-10-21 13:42 ` Tomi Valkeinen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4C6A4FED.5020006@canonical.com \
--to=bryan.wu@canonical.com \
--cc=linux-omap@vger.kernel.org \
--cc=lwalkera@gmail.com \
--cc=lwalkera@ieee.org \
--cc=stanley.miao@windriver.com \
--cc=tomi.valkeinen@nokia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.