diff options
| author | Jason Chen <b02280@freescale.com> | 2011-05-31 16:54:51 +0800 |
|---|---|---|
| committer | Alex Gonzalez <alex.gonzalez@digi.com> | 2011-08-01 09:51:45 +0200 |
| commit | 0c43582c291821ad89d27bed5ef571e2e330515c (patch) | |
| tree | 2a026a9c2e638956157cf46b104fd6cb07511d18 /drivers/video/mxc | |
| parent | c349e6de124becdd2cbcd0bd75ec255eea3e96eb (diff) | |
ENGR00144288 mxc edid: do not change fb info if edid no change
do not change fb info if edid no change
Signed-off-by: Jason Chen <b02280@freescale.com>
Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>
Diffstat (limited to 'drivers/video/mxc')
| -rw-r--r-- | drivers/video/mxc/mxc_edid.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/video/mxc/mxc_edid.c b/drivers/video/mxc/mxc_edid.c index 09159b989aa9..380e762c9d6b 100644 --- a/drivers/video/mxc/mxc_edid.c +++ b/drivers/video/mxc/mxc_edid.c @@ -395,24 +395,30 @@ static void det_worker(struct work_struct *work) /* cable connection changes */ if (mxc_ddc.update()) { + u8 edid_old[MXC_EDID_LENGTH]; mxc_ddc.cable_plugin = 1; sprintf(event_string, "EVENT=plugin"); - /* make sure fb is powerdown */ - acquire_console_sem(); - fb_blank(mxc_ddc.fbi, FB_BLANK_POWERDOWN); - release_console_sem(); + memcpy(edid_old, mxc_ddc.edid, MXC_EDID_LENGTH); if (mxc_edid_read(mxc_ddc.client->adapter, mxc_ddc.client->addr, mxc_ddc.edid, &mxc_ddc.edid_cfg, mxc_ddc.fbi) < 0) dev_err(&mxc_ddc.client->dev, "MXC ddc: read edid fail\n"); else { - if (mxc_ddc.fbi->monspecs.modedb_len > 0) { + if (!memcmp(edid_old, mxc_ddc.edid, MXC_EDID_LENGTH)) + dev_info(&mxc_ddc.client->dev, + "Sii902x: same edid\n"); + else if (mxc_ddc.fbi->monspecs.modedb_len > 0) { int i; const struct fb_videomode *mode; struct fb_videomode m; + /* make sure fb is powerdown */ + acquire_console_sem(); + fb_blank(mxc_ddc.fbi, FB_BLANK_POWERDOWN); + release_console_sem(); + fb_destroy_modelist(&mxc_ddc.fbi->modelist); for (i = 0; i < mxc_ddc.fbi->monspecs.modedb_len; i++) @@ -433,18 +439,15 @@ static void det_worker(struct work_struct *work) fb_set_var(mxc_ddc.fbi, &mxc_ddc.fbi->var); mxc_ddc.fbi->flags &= ~FBINFO_MISC_USEREVENT; release_console_sem(); - } - acquire_console_sem(); - fb_blank(mxc_ddc.fbi, FB_BLANK_UNBLANK); - release_console_sem(); + acquire_console_sem(); + fb_blank(mxc_ddc.fbi, FB_BLANK_UNBLANK); + release_console_sem(); + } } } else { mxc_ddc.cable_plugin = 0; sprintf(event_string, "EVENT=plugout"); - acquire_console_sem(); - fb_blank(mxc_ddc.fbi, FB_BLANK_POWERDOWN); - release_console_sem(); } kobject_uevent_env(&mxc_ddc.pdev->dev.kobj, KOBJ_CHANGE, envp); |