[PATCH 08/10] drm/i915/crc: implement get_crc_sources callback

[Mahesh Kumar <mahesh1.kumar@intel.com>]

This patch implements get_crc_sources callback, which returns list of
all the valid crc sources supported by driver in current platform.

Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c  |  1 +
 drivers/gpu/drm/i915/intel_drv.h      |  2 ++
 drivers/gpu/drm/i915/intel_pipe_crc.c | 11 +++++++++++
 3 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 8951734b1afa..fb49b8fdf06a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12866,6 +12866,7 @@ static const struct drm_crtc_funcs intel_crtc_funcs = {
 	.atomic_destroy_state = intel_crtc_destroy_state,
 	.set_crc_source = intel_crtc_set_crc_source,
 	.verify_crc_source = intel_crtc_verify_crc_source,
+	.get_crc_sources = intel_crtc_get_crc_sources,
 };
 
 struct wait_rps_boost {
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 083d40eae5c8..9f02fdc6b729 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -2163,11 +2163,13 @@ int intel_crtc_set_crc_source(struct drm_crtc *crtc, const char *source_name,
 			      size_t *values_cnt);
 int intel_crtc_verify_crc_source(struct drm_crtc *crtc,
 				 const char *source_name, size_t *values_cnt);
+void intel_crtc_get_crc_sources(struct seq_file *m, struct drm_crtc *crtc);
 void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc);
 void intel_crtc_enable_pipe_crc(struct intel_crtc *crtc);
 #else
 #define intel_crtc_set_crc_source NULL
 #define intel_crtc_verify_crc_source NULL
+#define intel_crtc_get_crc_sources NULL
 static inline void intel_crtc_disable_pipe_crc(struct intel_crtc *crtc)
 {
 }
diff --git a/drivers/gpu/drm/i915/intel_pipe_crc.c b/drivers/gpu/drm/i915/intel_pipe_crc.c
index 65148c0476fc..82c4a56928c0 100644
--- a/drivers/gpu/drm/i915/intel_pipe_crc.c
+++ b/drivers/gpu/drm/i915/intel_pipe_crc.c
@@ -1001,6 +1001,17 @@ intel_is_valid_crc_source(struct drm_i915_private *dev_priv,
 		return ivb_crc_source_valid(dev_priv, source);
 }
 
+void intel_crtc_get_crc_sources(struct seq_file *m, struct drm_crtc *crtc)
+{
+	struct drm_i915_private *dev_priv = to_i915(crtc->dev);
+	enum intel_pipe_crc_source source;
+
+	seq_puts(m, "[");
+	for (source = 0; source < INTEL_PIPE_CRC_SOURCE_MAX; source++)
+		if (intel_is_valid_crc_source(dev_priv, source) == 0)
+			seq_printf(m, "%s,", pipe_crc_source_name(source));
+	seq_puts(m, "auto] ");
+}
 
 int intel_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
 				 size_t *values_cnt)
-- 
2.16.2

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