linux-kernel - [PATCH v6 02/21] drm/bridge: adv7511: Register and attach our DSI device at probe

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Date:   Mon, 25 Oct 2021 17:15:17 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Thierry Reding <thierry.reding@...il.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Robert Foss <robert.foss@...aro.org>,
        Jonas Karlman <jonas@...boo.se>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Neil Armstrong <narmstrong@...libre.com>
Cc:     Seung-Woo Kim <sw0312.kim@...sung.com>,
        linux-arm-msm@...r.kernel.org,
        Joonyoung Shim <jy0922.shim@...sung.com>,
        Rob Clark <robdclark@...il.com>,
        Tian Tao <tiantao6@...ilicon.com>,
        Chen Feng <puck.chen@...ilicon.com>,
        Xinwei Kong <kong.kongxinwei@...ilicon.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        linux-samsung-soc@...r.kernel.org,
        Xinliang Liu <xinliang.liu@...aro.org>,
        John Stultz <john.stultz@...aro.org>,
        linux-kernel@...r.kernel.org, Inki Dae <inki.dae@...sung.com>,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        Sean Paul <sean@...rly.run>
Subject: [PATCH v6 02/21] drm/bridge: adv7511: Register and attach our DSI device at probe

In order to avoid any probe ordering issue, the best practice is to move
the secondary MIPI-DSI device registration and attachment to the
MIPI-DSI host at probe time. Let's do this.

Acked-by: Sam Ravnborg <sam@...nborg.org>
Tested-by: John Stultz <john.stultz@...aro.org>
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 9e3585f23cf1..f8e5da148599 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -910,9 +910,6 @@ static int adv7511_bridge_attach(struct drm_bridge *bridge,
 			return ret;
 	}
 
-	if (adv->type == ADV7533 || adv->type == ADV7535)
-		ret = adv7533_attach_dsi(adv);
-
 	if (adv->i2c_main->irq)
 		regmap_write(adv->regmap, ADV7511_REG_INT_ENABLE(0),
 			     ADV7511_INT0_HPD);
@@ -1288,8 +1285,18 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	drm_bridge_add(&adv7511->bridge);
 
 	adv7511_audio_init(dev, adv7511);
+
+	if (adv7511->type == ADV7533 || adv7511->type == ADV7535) {
+		ret = adv7533_attach_dsi(adv7511);
+		if (ret)
+			goto err_unregister_audio;
+	}
+
 	return 0;
 
+err_unregister_audio:
+	adv7511_audio_exit(adv7511);
+	drm_bridge_remove(&adv7511->bridge);
 err_unregister_cec:
 	i2c_unregister_device(adv7511->i2c_cec);
 	clk_disable_unprepare(adv7511->cec_clk);
-- 
2.31.1