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[v13,3/9] drm/display/dsc: Add drm_dsc_get_bpp_int helper

Message ID 20230329-rfc-msm-dsc-helper-v13-3-d7581e7becec@quicinc.com (mailing list archive)
State New, archived
Headers show
Series Introduce MSM-specific DSC helpers | expand

Commit Message

Jessica Zhang May 18, 2023, 1:14 a.m. UTC 
Add helper to get the integer value of drm_dsc_config.bits_per_pixel

Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
---
 include/drm/display/drm_dsc_helper.h | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h
index e0cbc38ada26..7bf7e8ff8eb4 100644
--- a/include/drm/display/drm_dsc_helper.h
+++ b/include/drm/display/drm_dsc_helper.h
@@ -9,6 +9,7 @@ 
 #define DRM_DSC_HELPER_H_
 
 #include <drm/display/drm_dsc.h>
+#include <linux/bug.h>
 
 enum drm_dsc_params_type {
 	DRM_DSC_1_2_444,
@@ -26,6 +27,12 @@  void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg);
 int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_type type);
 int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg);
 
+static inline u32 drm_dsc_get_bpp_int(const struct drm_dsc_config *dsc)
+{
+	WARN_ON_ONCE(dsc->bits_per_pixel & 0xf);
+	return dsc->bits_per_pixel >> 4;
+}
+
 static inline u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc)
 {
 	return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset);