diff options
| author | Pin-yen Lin <treapking@chromium.org> | 2022-10-04 07:49:43 +0300 |
|---|---|---|
| committer | Robert Foss <robert.foss@linaro.org> | 2022-10-04 11:54:09 +0300 |
| commit | 439adf72726462a0245822d1434f908d451a46ad (patch) | |
| tree | d6f6a3b68354d3c9bfa1e7f1145e88f8c526813d /drivers | |
| parent | 10517777d302d2e09bee3bf272dd28c0b0c8f3d0 (diff) | |
| download | linux-439adf72726462a0245822d1434f908d451a46ad.tar.xz | |
drm/bridge: it6505: Add pre_enable/post_disable callback
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: b5c84a9edcd4 ("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
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/bridge/ite-it6505.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index ae1105334ca5..a4302492cf8d 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -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, }; |