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drm/rockchip: analogix_dp: Add support for external bridge

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The current output code only supports connection to drm panels.
Add code to support drm bridge, to support connections to
external connectors.

Change-Id: I775244b7183692f07b74123fa43c8bb958525087
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
This commit is contained in:
Wyon Bi
2021-07-01 09:15:43 +08:00
parent 36b35520b4
commit d8a6016ef3
1 changed files with 24 additions and 1 deletions
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25
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
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@@ -72,6 +72,7 @@ struct rockchip_dp_device {
struct drm_device *drm_dev;
struct device *dev;
struct drm_encoder encoder;
struct drm_bridge *bridge;
struct drm_display_mode mode;
int num_clks;
@@ -233,6 +234,24 @@ static int rockchip_dp_get_modes(struct analogix_dp_plat_data *plat_data,
return 0;
}
static int rockchip_dp_bridge_attach(struct analogix_dp_plat_data *plat_data,
struct drm_bridge *bridge,
struct drm_connector *connector)
{
struct rockchip_dp_device *dp = to_dp(plat_data);
int ret;
if (dp->bridge) {
ret = drm_bridge_attach(&dp->encoder, dp->bridge, bridge);
if (ret) {
DRM_ERROR("Failed to attach bridge to drm: %d\n", ret);
return ret;
}
}
return 0;
}
static bool
rockchip_dp_drm_encoder_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
@@ -495,6 +514,7 @@ static int rockchip_dp_bind(struct device *dev, struct device *master,
dp->plat_data.power_on_end = rockchip_dp_poweron_end;
dp->plat_data.power_off = rockchip_dp_powerdown;
dp->plat_data.get_modes = rockchip_dp_get_modes;
dp->plat_data.attach = rockchip_dp_bridge_attach;
dp->plat_data.property_ops = &rockchip_dp_encoder_property_ops;
ret = rockchip_drm_psr_register(&dp->encoder, analogix_dp_psr_set);
@@ -562,10 +582,11 @@ static int rockchip_dp_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct drm_panel *panel = NULL;
struct drm_bridge *bridge = NULL;
struct rockchip_dp_device *dp;
int ret, id;
ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);
ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, &bridge);
if (ret < 0 && ret != -ENODEV)
return ret;
@@ -580,6 +601,8 @@ static int rockchip_dp_probe(struct platform_device *pdev)
dp->dev = dev;
dp->adp = ERR_PTR(-ENODEV);
dp->plat_data.panel = panel;
dp->plat_data.skip_connector = !!bridge;
dp->bridge = bridge;
ret = rockchip_dp_of_probe(dp);
if (ret < 0)