[Intel-gfx] [PATCH 2/2] drm/i915: Add the darkscreen debugfs under crtc

[Nemesa Garg]

Add debugfs entry for darkscreen to know the status
bpc and timer value .

Signed-off-by: Nemesa Garg <nemesa.g...@intel.com>
---
 .../gpu/drm/i915/display/intel_darkscreen.c   | 38 +++++++++++++++++++
 .../drm/i915/display/intel_display_debugfs.c  |  2 +
 2 files changed, 40 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_darkscreen.c 
b/drivers/gpu/drm/i915/display/intel_darkscreen.c
index ef68dbc7a296..c6490c16fdb5 100644
--- a/drivers/gpu/drm/i915/display/intel_darkscreen.c
+++ b/drivers/gpu/drm/i915/display/intel_darkscreen.c
@@ -67,3 +67,41 @@ void dark_screen_enable(struct intel_crtc_state *crtc_state)
        intel_de_rmw(dev_priv, DARK_SCREEN(crtc->config->cpu_transcoder), 0, 
DARK_SCREEN_DETECT |
                       DARK_SCREEN_DONE);
 }
+
+static int intel_darkscreen_debugfs_status_get(void *data, u64 *val)
+{
+       struct intel_crtc *crtc = data;
+
+       *val = crtc->dark_screen.enable;
+
+       return 0;
+}
+
+static int intel_darkscreen_debugfs_status_set(void *data, u64 val)
+{
+       struct intel_crtc *crtc = data;
+       struct intel_crtc_state *crtc_state;
+
+       crtc->dark_screen.enable = val;
+
+       crtc_state = to_intel_crtc_state(crtc->base.state);
+
+       if (crtc_state)
+               dark_screen_enable(crtc_state);
+
+       return 0;
+}
+
+/*
+ * Check the status whether the darkscreen
+ * is enabled or not.
+ */
+DEFINE_DEBUGFS_ATTRIBUTE(intel_darkscreen_debugfs_status_fops,
+                        intel_darkscreen_debugfs_status_get,
+                        intel_darkscreen_debugfs_status_set, "%llu\n");
+
+void intel_darkscreen_crtc_debugfs_add(struct intel_crtc *crtc)
+{
+       debugfs_create_file("i915_darkscreen_status", 0644, 
crtc->base.debugfs_entry,
+                           crtc, &intel_darkscreen_debugfs_status_fops);
+}
diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c 
b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
index 2836826f8c05..27a6141eab3e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c
+++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c
@@ -33,6 +33,7 @@
 #include "intel_psr.h"
 #include "intel_psr_regs.h"
 #include "intel_wm.h"
+#include "intel_darkscreen.h"
 
 static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
 {
@@ -1539,6 +1540,7 @@ void intel_crtc_debugfs_add(struct intel_crtc *crtc)
        intel_drrs_crtc_debugfs_add(crtc);
        intel_fbc_crtc_debugfs_add(crtc);
        hsw_ips_crtc_debugfs_add(crtc);
+       intel_darkscreen_crtc_debugfs_add(crtc);
 
        debugfs_create_file("i915_current_bpc", 0444, root, crtc,
                            &i915_current_bpc_fops);
-- 
2.25.1