diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2012-01-31 09:16:59 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-02-01 15:23:55 +1000 |
| commit | 7df898b1a70b13c3a8892625f4ead929d9554293 (patch) | |
| tree | beda118e6b81145a03ee25821dbdad9f5ec9303e /drivers | |
| parent | 62aa2b537c6f5957afd98e29f96897419ed5ebab (diff) | |
| download | lwn-7df898b1a70b13c3a8892625f4ead929d9554293.tar.gz lwn-7df898b1a70b13c3a8892625f4ead929d9554293.zip | |
drm/nouveau/disp: check that panel power gpio is enabled at init time
Reported-by: Yuriy Khomchik <homyur@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_display.c | 10 |
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.h b/drivers/gpu/drm/nouveau/nouveau_bios.h index 1e382ad5a2b8..a37c31e358aa 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.h +++ b/drivers/gpu/drm/nouveau/nouveau_bios.h @@ -54,9 +54,10 @@ struct bit_entry { int bit_table(struct drm_device *, u8 id, struct bit_entry *); enum dcb_gpio_tag { - DCB_GPIO_TVDAC0 = 0xc, + DCB_GPIO_PANEL_POWER = 0x01, + DCB_GPIO_TVDAC0 = 0x0c, DCB_GPIO_TVDAC1 = 0x2d, - DCB_GPIO_PWM_FAN = 0x9, + DCB_GPIO_PWM_FAN = 0x09, DCB_GPIO_FAN_SENSE = 0x3d, DCB_GPIO_UNUSED = 0xff }; diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index 3cb52bc52b21..795a9e3c990a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -219,6 +219,16 @@ nouveau_display_init(struct drm_device *dev) if (ret) return ret; + /* power on internal panel if it's not already. the init tables of + * some vbios default this to off for some reason, causing the + * panel to not work after resume + */ + if (nouveau_gpio_func_get(dev, DCB_GPIO_PANEL_POWER) == 0) { + nouveau_gpio_func_set(dev, DCB_GPIO_PANEL_POWER, true); + msleep(300); + } + + /* enable polling for external displays */ drm_kms_helper_poll_enable(dev); /* enable hotplug interrupts */ |