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drm/i915: Expose SAGV state via debugfs

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Since SAGV is controlled via unidirectional pcode commands
we have no way to query the current state. So instead let's
expose the last programmed state via debugfs. This way we
can at least know whether SAGV should be enabled or not
(which can be important to know when dealing with underruns/etc.).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230131002127.29305-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä
2023-01-31 02:21:27 +02:00
parent 9541fd164b
commit 14f25bd0bb
3 changed files with 28 additions and 7 deletions
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2
drivers/gpu/drm/i915/display/intel_display_debugfs.c
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@@ -1622,7 +1622,7 @@ void intel_display_debugfs_register(struct drm_i915_private *i915)
intel_dmc_debugfs_register(i915);
intel_fbc_debugfs_register(i915);
intel_hpd_debugfs_register(i915);
skl_watermark_ipc_debugfs_register(i915);
skl_watermark_debugfs_register(i915);
}
static int i915_panel_show(struct seq_file *m, void *data)