mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-04-29 10:34:22 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/bridge: it6505: Add pre_enable/post_disable callback

Browse Source 
Add atomic_pre_enable and atomic_post_disable callback to make sure the
bridge is not powered off until atomic_post_disable is called. This
prevents a power leakage when it6505 is powered off, but the upstream
DRM bridge is still sending display signals.

Fixes: b5c84a9edc ("drm/bridge: add it6505 driver")
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221004044943.2407781-3-treapking@chromium.org
This commit is contained in:
Pin-yen Lin
2022-10-04 12:49:43 +08:00
committed by Robert Foss
parent 10517777d3
commit 439adf7272
1 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/gpu/drm/bridge/ite-it6505.c
View File

@@ -2991,6 +2991,28 @@ static void it6505_bridge_atomic_disable(struct drm_bridge *bridge,
}
}
static void it6505_bridge_atomic_pre_enable(struct drm_bridge *bridge,
struct drm_bridge_state *old_state)
{
struct it6505 *it6505 = bridge_to_it6505(bridge);
struct device *dev = &it6505->client->dev;
DRM_DEV_DEBUG_DRIVER(dev, "start");
pm_runtime_get_sync(dev);
}
static void it6505_bridge_atomic_post_disable(struct drm_bridge *bridge,
struct drm_bridge_state *old_state)
{
struct it6505 *it6505 = bridge_to_it6505(bridge);
struct device *dev = &it6505->client->dev;
DRM_DEV_DEBUG_DRIVER(dev, "start");
pm_runtime_put_sync(dev);
}
static enum drm_connector_status
it6505_bridge_detect(struct drm_bridge *bridge)
{
@@ -3025,6 +3047,8 @@ static const struct drm_bridge_funcs it6505_bridge_funcs = {
.mode_valid = it6505_bridge_mode_valid,
.atomic_enable = it6505_bridge_atomic_enable,
.atomic_disable = it6505_bridge_atomic_disable,
.atomic_pre_enable = it6505_bridge_atomic_pre_enable,
.atomic_post_disable = it6505_bridge_atomic_post_disable,
.detect = it6505_bridge_detect,
.get_edid = it6505_bridge_get_edid,
};