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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
committed by Tao Huang
parent d177813589
commit 94e5981901
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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@@ -65,6 +65,7 @@ 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;
struct regmap *grf;
@@ -165,6 +166,24 @@ 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, 0);
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,
@@ -418,6 +437,7 @@ static int rockchip_dp_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
const struct rockchip_dp_chip_data *dp_data;
struct drm_panel *panel = NULL;
struct drm_bridge *bridge = NULL;
struct rockchip_dp_device *dp;
int ret;
@@ -425,7 +445,7 @@ static int rockchip_dp_probe(struct platform_device *pdev)
if (!dp_data)
return -ENODEV;
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;
@@ -442,6 +462,9 @@ static int rockchip_dp_probe(struct platform_device *pdev)
dp->plat_data.power_on_start = rockchip_dp_poweron_start;
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.skip_connector = !!bridge;
dp->bridge = bridge;
ret = rockchip_dp_of_probe(dp);
if (ret < 0)