[PATCH v6 11/21] drm/bridge: ps8640: Switch to devm MIPI-DSI helpers

From: Maxime Ripard
Date: Mon Oct 25 2021 - 11:16:37 EST


Let's switch to the new devm MIPI-DSI function to register and attach
our secondary device. This also avoids leaking the device on removal.

Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
---
drivers/gpu/drm/bridge/parade-ps8640.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c
index 3aaa90913bf8..5ae15fc407c5 100644
--- a/drivers/gpu/drm/bridge/parade-ps8640.c
+++ b/drivers/gpu/drm/bridge/parade-ps8640.c
@@ -428,7 +428,7 @@ static int ps8640_bridge_attach(struct drm_bridge *bridge,
if (!host)
return -ENODEV;

- dsi = mipi_dsi_device_register_full(host, &info);
+ dsi = devm_mipi_dsi_device_register_full(dev, host, &info);
if (IS_ERR(dsi)) {
dev_err(dev, "failed to create dsi device\n");
ret = PTR_ERR(dsi);
@@ -442,27 +442,22 @@ static int ps8640_bridge_attach(struct drm_bridge *bridge,
MIPI_DSI_MODE_VIDEO_SYNC_PULSE;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->lanes = NUM_MIPI_LANES;
- ret = mipi_dsi_attach(dsi);
+
+ ret = devm_mipi_dsi_attach(dev, dsi);
if (ret) {
dev_err(dev, "failed to attach dsi device: %d\n", ret);
- goto err_dsi_attach;
+ return ret;
}

ret = drm_dp_aux_register(&ps_bridge->aux);
if (ret) {
dev_err(dev, "failed to register DP AUX channel: %d\n", ret);
- goto err_aux_register;
+ return ret;
}

/* Attach the panel-bridge to the dsi bridge */
return drm_bridge_attach(bridge->encoder, ps_bridge->panel_bridge,
&ps_bridge->bridge, flags);
-
-err_aux_register:
- mipi_dsi_detach(dsi);
-err_dsi_attach:
- mipi_dsi_device_unregister(dsi);
- return ret;
}

static void ps8640_bridge_detach(struct drm_bridge *bridge)
--
2.31.1