[PATCH v5 07/21] drm/bridge: lt9611: Switch to devm MIPI-DSI helpers

From: Maxime Ripard <maxime@cerno.tech>
To: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Maxime Ripard <maxime@cerno.tech>,
	Sam Ravnborg <sam@ravnborg.org>,
	Daniel Vetter <daniel.vetter@intel.com>,
	David Airlie <airlied@linux.ie>,
	Thierry Reding <thierry.reding@gmail.com>,
	Andrzej Hajda <a.hajda@samsung.com>,
	Robert Foss <robert.foss@linaro.org>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>,
	Xinliang Liu <xinliang.liu@linaro.org>,
	linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Tian Tao <tiantao6@hisilicon.com>,
	freedreno@lists.freedesktop.org,
	Chen Feng <puck.chen@hisilicon.com>,
	Joonyoung Shim <jy0922.shim@samsung.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	John Stultz <john.stultz@linaro.org>,
	Rob Clark <robdclark@gmail.com>,
	linux-arm-msm@vger.kernel.org, Sean Paul <sean@poorly.run>,
	Inki Dae <inki.dae@samsung.com>,
	Xinwei Kong <kong.kongxinwei@hisilicon.com>,
	dri-devel@lists.freedesktop.org
Subject: [PATCH v5 07/21] drm/bridge: lt9611: Switch to devm MIPI-DSI helpers
Date: Thu, 21 Oct 2021 09:39:33 +0200	[thread overview]
Message-ID: <20211021073947.499373-8-maxime@cerno.tech> (raw)
In-Reply-To: <20211021073947.499373-1-maxime@cerno.tech>

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

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/bridge/lontium-lt9611.c | 24 ++++--------------------
 1 file changed, 4 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c
index 29b1ce2140ab..654131aca5ed 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611.c
@@ -760,6 +760,7 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
 	const struct mipi_dsi_device_info info = { "lt9611", 0, NULL };
 	struct mipi_dsi_device *dsi;
 	struct mipi_dsi_host *host;
+	struct device *dev = lt9611->dev;
 	int ret;
 
 	host = of_find_mipi_dsi_host_by_node(dsi_node);
@@ -768,7 +769,7 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
 		return ERR_PTR(-EPROBE_DEFER);
 	}
 
-	dsi = mipi_dsi_device_register_full(host, &info);
+	dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
 	if (IS_ERR(dsi)) {
 		dev_err(lt9611->dev, "failed to create dsi device\n");
 		return dsi;
@@ -779,29 +780,15 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611,
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
 			  MIPI_DSI_MODE_VIDEO_HSE;
 
-	ret = mipi_dsi_attach(dsi);
+	ret = devm_mipi_dsi_attach(dev, dsi);
 	if (ret < 0) {
-		dev_err(lt9611->dev, "failed to attach dsi to host\n");
-		mipi_dsi_device_unregister(dsi);
+		dev_err(dev, "failed to attach dsi to host\n");
 		return ERR_PTR(ret);
 	}
 
 	return dsi;
 }
 
-static void lt9611_bridge_detach(struct drm_bridge *bridge)
-{
-	struct lt9611 *lt9611 = bridge_to_lt9611(bridge);
-
-	if (lt9611->dsi1) {
-		mipi_dsi_detach(lt9611->dsi1);
-		mipi_dsi_device_unregister(lt9611->dsi1);
-	}
-
-	mipi_dsi_detach(lt9611->dsi0);
-	mipi_dsi_device_unregister(lt9611->dsi0);
-}
-
 static int lt9611_connector_init(struct drm_bridge *bridge, struct lt9611 *lt9611)
 {
 	int ret;
@@ -855,9 +842,7 @@ static int lt9611_bridge_attach(struct drm_bridge *bridge,
 	return 0;
 
 err_unregister_dsi0:
-	lt9611_bridge_detach(bridge);
 	drm_connector_cleanup(&lt9611->connector);
-	mipi_dsi_device_unregister(lt9611->dsi0);
 
 	return ret;
 }
@@ -952,7 +937,6 @@ static void lt9611_bridge_hpd_enable(struct drm_bridge *bridge)
 
 static const struct drm_bridge_funcs lt9611_bridge_funcs = {
 	.attach = lt9611_bridge_attach,
-	.detach = lt9611_bridge_detach,
 	.mode_valid = lt9611_bridge_mode_valid,
 	.enable = lt9611_bridge_enable,
 	.disable = lt9611_bridge_disable,
-- 
2.31.1

