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drm/bridge: ti-sn65dsi86: make use of debugfs_init callback

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[ Upstream commit 1d1f7b15cb9c11974cebfd39da51dc69b8cb31ff ]

Do not create a custom directory in debugfs-root, but use the
debugfs_init callback to create a custom directory at the given place
for the bridge. The new directory layout looks like this on a Renesas
GrayHawk-Single with a R-Car V4M SoC:

	/sys/kernel/debug/dri/feb00000.display/DP-1/1-002c

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250315201651.7339-2-wsa+renesas@sang-engineering.com
Stable-dep-of: 55e8ff842051 ("drm/bridge: ti-sn65dsi86: Add HPD for DisplayPort connector type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wolfram Sang
2025-03-15 21:15:11 +01:00
committed by Greg Kroah-Hartman
parent ee800ff711
commit 1c9a8a84c5
1 changed files with 10 additions and 30 deletions
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40
drivers/gpu/drm/bridge/ti-sn65dsi86.c
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@@ -424,36 +424,8 @@ static int status_show(struct seq_file *s, void *data)
return 0; return 0;
} }
DEFINE_SHOW_ATTRIBUTE(status); DEFINE_SHOW_ATTRIBUTE(status);
static void ti_sn65dsi86_debugfs_remove(void *data)
{
debugfs_remove_recursive(data);
}
static void ti_sn65dsi86_debugfs_init(struct ti_sn65dsi86 *pdata)
{
struct device *dev = pdata->dev;
struct dentry *debugfs;
int ret;
debugfs = debugfs_create_dir(dev_name(dev), NULL);
/*
* We might get an error back if debugfs wasn't enabled in the kernel
* so let's just silently return upon failure.
*/
if (IS_ERR_OR_NULL(debugfs))
return;
ret = devm_add_action_or_reset(dev, ti_sn65dsi86_debugfs_remove, debugfs);
if (ret)
return;
debugfs_create_file("status", 0600, debugfs, pdata, &status_fops);
}
/* ----------------------------------------------------------------------------- /* -----------------------------------------------------------------------------
* Auxiliary Devices (*not* AUX) * Auxiliary Devices (*not* AUX)
*/ */
@@ -1217,6 +1189,15 @@ static struct edid *ti_sn_bridge_get_edid(struct drm_bridge *bridge,
return drm_get_edid(connector, &pdata->aux.ddc); return drm_get_edid(connector, &pdata->aux.ddc);
} }
static void ti_sn65dsi86_debugfs_init(struct drm_bridge *bridge, struct dentry *root)
{
struct ti_sn65dsi86 *pdata = bridge_to_ti_sn65dsi86(bridge);
struct dentry *debugfs;
debugfs = debugfs_create_dir(dev_name(pdata->dev), root);
debugfs_create_file("status", 0600, debugfs, pdata, &status_fops);
}
static const struct drm_bridge_funcs ti_sn_bridge_funcs = { static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
.attach = ti_sn_bridge_attach, .attach = ti_sn_bridge_attach,
.detach = ti_sn_bridge_detach, .detach = ti_sn_bridge_detach,
@@ -1230,6 +1211,7 @@ static const struct drm_bridge_funcs ti_sn_bridge_funcs = {
.atomic_reset = drm_atomic_helper_bridge_reset, .atomic_reset = drm_atomic_helper_bridge_reset,
.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
.debugfs_init = ti_sn65dsi86_debugfs_init,
}; };
static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata, static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
@@ -1935,8 +1917,6 @@ static int ti_sn65dsi86_probe(struct i2c_client *client)
if (ret) if (ret)
return ret; return ret;
ti_sn65dsi86_debugfs_init(pdata);
/* /*
* Break ourselves up into a collection of aux devices. The only real * Break ourselves up into a collection of aux devices. The only real
* motiviation here is to solve the chicken-and-egg problem of probe * motiviation here is to solve the chicken-and-egg problem of probe