[Intel-gfx] [PATCH 04/10] drm/amdgpu_dm/crc: Implement verify_crc_source callback

[Mahesh Kumar]

This patch implements "verify_crc_source" callback function for
AMD drm driver.

Signed-off-by: Mahesh Kumar <mahesh1.ku...@intel.com>
Cc: dri-de...@lists.freedesktop.org
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Acked-by: Leo Li <sunpeng...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c     |  1 +
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h     |  4 ++++
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c | 16 ++++++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f0fc3067ab5d..be127ba7e604 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2608,6 +2608,7 @@ static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = 
{
        .atomic_duplicate_state = dm_crtc_duplicate_state,
        .atomic_destroy_state = dm_crtc_destroy_state,
        .set_crc_source = amdgpu_dm_crtc_set_crc_source,
+       .verify_crc_source = amdgpu_dm_crtc_verify_crc_source,
        .enable_vblank = dm_enable_vblank,
        .disable_vblank = dm_disable_vblank,
 };
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index a29dc35954c9..e43ed064dc46 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -260,9 +260,13 @@ amdgpu_dm_remove_sink_from_freesync_module(struct 
drm_connector *connector);
 #ifdef CONFIG_DEBUG_FS
 int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
                                  size_t *values_cnt);
+int amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc,
+                                    const char *src_name,
+                                    size_t *values_cnt);
 void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc);
 #else
 #define amdgpu_dm_crtc_set_crc_source NULL
+#define amdgpu_dm_crtc_verify_crc_source NULL
 #define amdgpu_dm_crtc_handle_crc_irq(x)
 #endif
 
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
index 52f2c01349e3..dfcca594d52a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c
@@ -46,6 +46,22 @@ static enum amdgpu_dm_pipe_crc_source 
dm_parse_crc_source(const char *source)
        return AMDGPU_DM_PIPE_CRC_SOURCE_INVALID;
 }
 
+int
+amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc, const char *src_name,
+                                size_t *values_cnt)
+{
+       enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name);
+
+       if (source < 0) {
+               DRM_DEBUG_DRIVER("Unknown CRC source %s for CRTC%d\n",
+                                src_name, crtc->index);
+               return -EINVAL;
+       }
+
+       *values_cnt = 3;
+       return 0;
+}
+
 int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name,
                           size_t *values_cnt)
 {
-- 
2.16.2

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