[Intel-gfx] [PATCH 03/10] drm/rockchip/crc: Implement verify_crc_source callback

[Mahesh Kumar]

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

Changes since V1:
 - simplify the verification (Jani N)

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: Heiko Stuebner <he...@sntech.de>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c 
b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index effecbed2d11..77e91b15ddb4 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1138,12 +1138,31 @@ static int vop_crtc_set_crc_source(struct drm_crtc 
*crtc,
 
        return ret;
 }
+
+static int
+vop_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
+                          size_t *values_cnt)
+{
+       if (source_name && strcmp(source_name, "auto") != 0)
+               return -EINVAL;
+
+       *values_cnt = 3;
+       return 0;
+}
+
 #else
 static int vop_crtc_set_crc_source(struct drm_crtc *crtc,
                                   const char *source_name, size_t *values_cnt)
 {
        return -ENODEV;
 }
+
+static int
+vop_crtc_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
+                          size_t *values_cnt)
+{
+       return -ENODEV;
+}
 #endif
 
 static const struct drm_crtc_funcs vop_crtc_funcs = {
@@ -1156,6 +1175,7 @@ static const struct drm_crtc_funcs vop_crtc_funcs = {
        .enable_vblank = vop_crtc_enable_vblank,
        .disable_vblank = vop_crtc_disable_vblank,
        .set_crc_source = vop_crtc_set_crc_source,
+       .verify_crc_source = vop_crtc_verify_crc_source,
 };
 
 static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)
-- 
2.16.2

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