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drm/bridge: maxim-max96752f: Add video status check

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Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
Change-Id: I3880a68f9a6ec2aef2b82a568d4f40dd39feeaa0
This commit is contained in:
Wyon Bi
2022-08-03 09:48:32 +00:00
parent be3554a423
commit 416f7f52af
1 changed files with 20 additions and 0 deletions
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20
drivers/gpu/drm/bridge/maxim-max96752f.c
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@@ -141,6 +141,19 @@ max96752f_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
return out_bus_fmts;
}
static bool max96752f_bridge_video_locked(struct max96752f_bridge *des)
{
u32 val;
if (regmap_read(des->regmap, 0x0003, &val))
return false;
if (!FIELD_GET(VIDEO_LOCK, val))
return false;
return true;
}
static int max96752f_bridge_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
{
@@ -152,6 +165,13 @@ static int max96752f_bridge_attach(struct drm_bridge *bridge,
if (ret)
return ret;
if (max96752f_bridge_video_locked(des)) {
if (des->panel) {
drm_panel_prepare(des->panel);
drm_panel_enable(des->panel);
}
}
if (des->next_bridge)
return drm_bridge_attach(bridge->encoder, des->next_bridge,
bridge, 0);