linux-kernel - [PATCH v4 07/24] drm/bridge: anx7625: Switch to devm MIPI-DSI helpers

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Date:   Fri, 10 Sep 2021 12:12:01 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Andrzej Hajda <a.hajda@...sung.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Jonas Karlman <jonas@...boo.se>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>,
        Neil Armstrong <narmstrong@...libre.com>,
        Robert Foss <robert.foss@...aro.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
Cc:     Sean Paul <sean@...rly.run>, freedreno@...ts.freedesktop.org,
        Kyungmin Park <kyungmin.park@...sung.com>,
        linux-kernel@...r.kernel.org,
        Xinliang Liu <xinliang.liu@...aro.org>,
        Seung-Woo Kim <sw0312.kim@...sung.com>,
        Tian Tao <tiantao6@...ilicon.com>,
        Inki Dae <inki.dae@...sung.com>,
        linux-samsung-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        Rob Clark <robdclark@...il.com>,
        dri-devel@...ts.freedesktop.org,
        John Stultz <john.stultz@...aro.org>,
        Chen Feng <puck.chen@...ilicon.com>,
        Xinwei Kong <kong.kongxinwei@...ilicon.com>,
        Joonyoung Shim <jy0922.shim@...sung.com>
Subject: [PATCH v4 07/24] drm/bridge: anx7625: Switch to devm MIPI-DSI helpers

Let's switch to the new devm MIPI-DSI function to register and attach
our secondary device.

Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/gpu/drm/bridge/analogix/anx7625.c | 20 +++++---------------
 1 file changed, 5 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 1a871f6b6822..4adeb2bad03a 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1316,6 +1316,7 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
 		.channel = 0,
 		.node = NULL,
 	};
+	int ret;
 
 	DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n");
 
@@ -1325,7 +1326,7 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
 		return -EINVAL;
 	}
 
-	dsi = mipi_dsi_device_register_full(host, &info);
+	dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
 	if (IS_ERR(dsi)) {
 		DRM_DEV_ERROR(dev, "fail to create dsi device.\n");
 		return -EINVAL;
@@ -1337,10 +1338,10 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
 		MIPI_DSI_MODE_VIDEO_SYNC_PULSE	|
 		MIPI_DSI_MODE_VIDEO_HSE;
 
-	if (mipi_dsi_attach(dsi) < 0) {
+	ret = devm_mipi_dsi_attach(dev, dsi);
+	if (ret) {
 		DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n");
-		mipi_dsi_device_unregister(dsi);
-		return -EINVAL;
+		return ret;
 	}
 
 	ctx->dsi = dsi;
@@ -1350,16 +1351,6 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
 	return 0;
 }
 
-static void anx7625_bridge_detach(struct drm_bridge *bridge)
-{
-	struct anx7625_data *ctx = bridge_to_anx7625(bridge);
-
-	if (ctx->dsi) {
-		mipi_dsi_detach(ctx->dsi);
-		mipi_dsi_device_unregister(ctx->dsi);
-	}
-}
-
 static int anx7625_bridge_attach(struct drm_bridge *bridge,
 				 enum drm_bridge_attach_flags flags)
 {
@@ -1624,7 +1615,6 @@ static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge,
 
 static const struct drm_bridge_funcs anx7625_bridge_funcs = {
 	.attach = anx7625_bridge_attach,
-	.detach = anx7625_bridge_detach,
 	.disable = anx7625_bridge_disable,
 	.mode_valid = anx7625_bridge_mode_valid,
 	.mode_set = anx7625_bridge_mode_set,
-- 
2.31.1