[PATCH v2 1/4] drm/bridge: ti-sn65dsi86: Implement bridge connector operations

[Kieran Bingham]

From: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>

Implement the bridge connector-related .get_edid() operation, and report
the related bridge capabilities and type.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>
Reviewed-by: Stephen Boyd <swboyd at chromium.org>
Reviewed-by: Douglas Anderson <dianders at chromium.org>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas at ideasonboard.com>
---
Changes since v1:

- The connector .get_modes() operation doesn't rely on EDID anymore,
  __ti_sn_bridge_get_edid() and ti_sn_bridge_get_edid() got merged
  together

Notes from Kieran:

RB Tags collected from:
 https://lore.kernel.org/all/20210322030128.2283-9-laurent.pinchart+renesas@ideasonboard.com/

However this was over a year ago, so let me know if other patches now
superceed this one or otherwise invalidate this update.

 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index c55848588123..ffb6c04f6c46 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -1154,6 +1154,19 @@ static void ti_sn_bridge_post_disable(struct drm_bridge *bridge)
 	pm_runtime_put_sync(pdata->dev);
 }
 
+static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
+					  struct drm_connector *connector)
+{
+	struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
+	struct edid *edid;
+
+	pm_runtime_get_sync(pdata->dev);
+	edid = drm_get_edid(connector, &pdata->aux.ddc);
+	pm_runtime_put_autosuspend(pdata->dev);
+
+	return edid;
+}
+
 static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
 	.attach = ti_sn_bridge_attach,
 	.detach = ti_sn_bridge_detach,
@@ -1162,6 +1175,7 @@ static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
 	.enable = ti_sn_bridge_enable,
 	.disable = ti_sn_bridge_disable,
 	.post_disable = ti_sn_bridge_post_disable,
+	.get_edid = ti_sn_bridge_get_edid,
 };
 
 static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
@@ -1248,6 +1262,8 @@ static int ti_sn_bridge_probe(struct auxiliary_device *adev,
 
 	pdata->bridge.funcs = &ti_sn_bridge_funcs;
 	pdata->bridge.of_node = np;
+	pdata->bridge.ops = DRM_BRIDGE_OP_EDID;
+	pdata->bridge.type = DRM_MODE_CONNECTOR_eDP;
 
 	drm_bridge_add(&pdata->bridge);
 
-- 
2.32.0