From 68858328124162b9b42bc7b8232eee1915cc1d8f Mon Sep 17 00:00:00 2001 From: Jessica Zhang Date: Wed, 24 May 2023 10:45:16 -0700 Subject: [PATCH] drm/display/dsc: Add drm_dsc_get_bpp_int helper Add helper to get the integer value of drm_dsc_config.bits_per_pixel Reviewed-by: Marijn Suijten Reviewed-by: Dmitry Baryshkov Signed-off-by: Jessica Zhang Patchwork: https://patchwork.freedesktop.org/patch/539268/ Link: https://lore.kernel.org/r/20230329-rfc-msm-dsc-helper-v14-3-bafc7be95691@quicinc.com Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/display/drm_dsc_helper.c | 13 +++++++++++++ include/drm/display/drm_dsc_helper.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/display/drm_dsc_helper.c b/drivers/gpu/drm/display/drm_dsc_helper.c index b31fe98..4424380 100644 --- a/drivers/gpu/drm/display/drm_dsc_helper.c +++ b/drivers/gpu/drm/display/drm_dsc_helper.c @@ -1437,6 +1437,19 @@ int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg) EXPORT_SYMBOL(drm_dsc_compute_rc_parameters); /** + * drm_dsc_get_bpp_int() - Get integer bits per pixel value for the given DRM DSC config + * @vdsc_cfg: Pointer to DRM DSC config struct + * + * Return: Integer BPP value + */ +u32 drm_dsc_get_bpp_int(const struct drm_dsc_config *vdsc_cfg) +{ + WARN_ON_ONCE(vdsc_cfg->bits_per_pixel & 0xf); + return vdsc_cfg->bits_per_pixel >> 4; +} +EXPORT_SYMBOL(drm_dsc_get_bpp_int); + +/** * drm_dsc_initial_scale_value() - Calculate the initial scale value for the given DSC config * @dsc: Pointer to DRM DSC config struct * diff --git a/include/drm/display/drm_dsc_helper.h b/include/drm/display/drm_dsc_helper.h index f4e18e5..913aa20 100644 --- a/include/drm/display/drm_dsc_helper.h +++ b/include/drm/display/drm_dsc_helper.h @@ -27,6 +27,7 @@ int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg); u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc); u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc); +u32 drm_dsc_get_bpp_int(const struct drm_dsc_config *vdsc_cfg); #endif /* _DRM_DSC_HELPER_H_ */ -- 2.7.4