diff options
| author | Matthew Garrett <mjg59@srcf.ucam.org> | 2009-02-18 02:08:25 +0000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2009-02-18 13:48:33 +1000 |
| commit | 96ce587e8b915afeac38e5f547ba95803c1780f2 (patch) | |
| tree | acd11f89b3ec7877a9c54a708a65ad2b56c9c334 /shared-core/nouveau_state.c | |
| parent | 0054e14793e585ec0d8e95e3d7b82cbf1a684af8 (diff) | |
nouveau: Add in-kernel backlight control support
Several nvidia-based systems don't support backlight control via the
standard ACPI control mechanisms. Instead, it's necessary for the driver
to modify the backlight control registers directly. This patch adds
support for determining whether the registers appear to be in use, and
if so registers a kernel backlight device to control them. The backlight
can then be controlled via existing userspace tools.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'shared-core/nouveau_state.c')
| -rw-r--r-- | shared-core/nouveau_state.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/shared-core/nouveau_state.c b/shared-core/nouveau_state.c index 0b6002ce..c9f43295 100644 --- a/shared-core/nouveau_state.c +++ b/shared-core/nouveau_state.c @@ -363,6 +363,11 @@ nouveau_card_init(struct drm_device *dev) ret = nouveau_dma_channel_init(dev); if (ret) return ret; + ret = nouveau_backlight_init(dev); + if (ret) + DRM_ERROR("Error code %d when trying to register backlight\n", + ret); + dev_priv->init_state = NOUVEAU_CARD_INIT_DONE; return 0; } @@ -375,6 +380,8 @@ static void nouveau_card_takedown(struct drm_device *dev) DRM_DEBUG("prev state = %d\n", dev_priv->init_state); if (dev_priv->init_state != NOUVEAU_CARD_INIT_DOWN) { + nouveau_backlight_exit(dev); + nouveau_dma_channel_takedown(dev); engine->fifo.takedown(dev); |