diff options
| author | Bhanuprakash Modem <bhanuprakash.modem@intel.com> | 2020-06-22 19:55:18 +0530 |
|---|---|---|
| committer | Manasi Navare <manasi.d.navare@intel.com> | 2020-06-25 15:47:14 -0700 |
| commit | 41752663b410c6265e24ff0570350b0b05ecdafe (patch) | |
| tree | 6ea7e74641e248bc15e8ab9c58cd795e3773aea3 /drivers | |
| parent | 6b86a1224af8b369d34a41b0954d9eeabd6f35ef (diff) | |
| download | linux-41752663b410c6265e24ff0570350b0b05ecdafe.tar.bz2 | |
drm/debug: Expose connector VRR monitor range via debugfs
[Why]
It's useful to know the min and max vrr range for IGT testing.
[How]
Expose the min and max vfreq for the connector via a debugfs file
on the connector, "vrr_range".
Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
v2:
* Fix the typo in max_vfreq (Manasi)
* Change the name of node to i915_vrr_info so we can add
other vrr info for more debug info (Manasi)
* Change the VRR capable to display Yes or No (Manasi)
* Fix indentation checkpatch errors (Manasi)
v3:
* Remove the unnecessary debug print (Manasi)
v4:
* Rebase
v5:
* Rename to vrr_range to match AMD debugfs
v6:
* Rebase (manasi)
v7:
* Fix cmpilation due to rebase
v8:
* Move debugfs node creation logic to DRM (Emil)
* Remove AMD specific logic (Emil)
v9:
* Separate patch for removal of AMD specific logic (Manasi)
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Harry Wentland <harry.wentland@amd.com>
CC: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200622142519.16214-3-bhanuprakash.modem@intel.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_debugfs.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index bfe4602f206b..3d7182001004 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -376,6 +376,24 @@ static ssize_t edid_write(struct file *file, const char __user *ubuf, return (ret) ? ret : len; } +/* + * Returns the min and max vrr vfreq through the connector's debugfs file. + * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range + */ +static int vrr_range_show(struct seq_file *m, void *data) +{ + struct drm_connector *connector = m->private; + + if (connector->status != connector_status_connected) + return -ENODEV; + + seq_printf(m, "Min: %u\n", (u8)connector->display_info.monitor_range.min_vfreq); + seq_printf(m, "Max: %u\n", (u8)connector->display_info.monitor_range.max_vfreq); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(vrr_range); + static const struct file_operations drm_edid_fops = { .owner = THIS_MODULE, .open = edid_open, @@ -413,6 +431,10 @@ void drm_debugfs_connector_add(struct drm_connector *connector) /* edid */ debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector, &drm_edid_fops); + + /* vrr range */ + debugfs_create_file("vrr_range", S_IRUGO, root, connector, + &vrr_range_fops); } void drm_debugfs_connector_remove(struct drm_connector *connector) |