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drm/nouveau/disp: check that panel power gpio is enabled at init time

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Reported-by: Yuriy Khomchik <homyur@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-01-31 09:16:59 +10:00
parent 62aa2b537c
commit 7df898b1a7
2 changed files with 13 additions and 2 deletions
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5
drivers/gpu/drm/nouveau/nouveau_bios.h
View file

@ -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
};

10
drivers/gpu/drm/nouveau/nouveau_display.c
View file

@ -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 */