diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2012-12-10 18:53:43 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-01-13 18:07:32 +1000 |
| commit | 1a1841d300a1b6cac35b0761755364d6d3e10b2e (patch) | |
| tree | dc791bacb66771e5d8fa5db60c8c44117a382ca2 /drivers/gpu/drm/nouveau/nouveau_display.c | |
| parent | 4459146deb9eeabb0adf10d829bd8019d16bb0f4 (diff) | |
drm/nouveau: do not forcibly power on lvds panels
This fix was put in place to fix a bug where the eDP panel on certain
laptops fails to respond over the aux channel after suspend.
It appears that on some systems (Dell M6600, with LVDS panel) there's a
very bad interaction with the eDP init table that causes the SOR to get
very confused and not drive the panel correctly, leading to bleed.
A DPMS off/on cycle is enough to bring it back, but, this will avoid the
problem by not touching the panel GPIOs at times we're not meant to.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_display.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_display.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index e4188f24fc7..508b00a2ce0 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -225,15 +225,6 @@ 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 (gpio && gpio->get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff) == 0) { - gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1); - msleep(300); - } - /* enable polling for external displays */ drm_kms_helper_poll_enable(dev); |