linux-kernel - [PATCH v2 10/14] drm/bridge: ti-sn65dsi86: Stop caching the EDID ourselves

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Date:   Mon, 29 Mar 2021 19:53:41 -0700
From:   Douglas Anderson <dianders@...omium.org>
To:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Sam Ravnborg <sam@...nborg.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        robdclark@...omium.org,
        Stanislav Lisovskiy <stanislav.lisovskiy@...el.com>,
        linux-arm-msm@...r.kernel.org, Steev Klimaszewski <steev@...i.org>,
        Linus W <linus.walleij@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Robert Foss <robert.foss@...aro.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 10/14] drm/bridge: ti-sn65dsi86: Stop caching the EDID ourselves

Now that we have the patch ("drm/edid: Use the cached EDID in
drm_get_edid() if eDP") we no longer need to maintain our own
cache. Drop this code.

Signed-off-by: Douglas Anderson <dianders@...omium.org>
---

(no changes since v1)

 drivers/gpu/drm/bridge/ti-sn65dsi86.c | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 9577ebd58c4c..c0398daaa4a6 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -121,7 +121,6 @@
  * @debugfs:      Used for managing our debugfs.
  * @host_node:    Remote DSI node.
  * @dsi:          Our MIPI DSI source.
- * @edid:         Detected EDID of eDP panel.
  * @refclk:       Our reference clock.
  * @panel:        Our panel.
  * @enable_gpio:  The GPIO we toggle to enable the bridge.
@@ -147,7 +146,6 @@ struct ti_sn_bridge {
 	struct drm_bridge		bridge;
 	struct drm_connector		connector;
 	struct dentry			*debugfs;
-	struct edid			*edid;
 	struct device_node		*host_node;
 	struct mipi_dsi_device		*dsi;
 	struct clk			*refclk;
@@ -269,17 +267,17 @@ connector_to_ti_sn_bridge(struct drm_connector *connector)
 static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector)
 {
 	struct ti_sn_bridge *pdata = connector_to_ti_sn_bridge(connector);
-	struct edid *edid = pdata->edid;
-	int num;
+	struct edid *edid;
+	int num = 0;
 
-	if (!edid) {
-		pm_runtime_get_sync(pdata->dev);
-		edid = pdata->edid = drm_get_edid(connector, &pdata->aux.ddc);
-		pm_runtime_put(pdata->dev);
-	}
+	pm_runtime_get_sync(pdata->dev);
+	edid = drm_get_edid(connector, &pdata->aux.ddc);
+	pm_runtime_put(pdata->dev);
 
-	if (edid && drm_edid_is_valid(edid)) {
-		num = drm_add_edid_modes(connector, edid);
+	if (edid) {
+		if (drm_edid_is_valid(edid))
+			num = drm_add_edid_modes(connector, edid);
+		kfree(edid);
 		if (num)
 			return num;
 	}
@@ -1308,8 +1306,6 @@ static int ti_sn_bridge_remove(struct i2c_client *client)
 	if (!pdata)
 		return -EINVAL;
 
-	kfree(pdata->edid);
-
 	ti_sn_debugfs_remove(pdata);
 
 	drm_bridge_remove(&pdata->bridge);
-- 
2.31.0.291.g576ba9dcdaf-goog