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drm/display/dsc: Add drm_dsc_get_bpp_int helper

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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>
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 <dmitry.baryshkov@linaro.org>
This commit is contained in:
Jessica Zhang 2023-05-24 10:45:16 -07:00 committed by Dmitry Baryshkov
parent e871a70d8c
commit 6885832812
2 changed files with 14 additions and 0 deletions
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13
drivers/gpu/drm/display/drm_dsc_helper.c
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@ -1436,6 +1436,19 @@ 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

1
include/drm/display/drm_dsc_helper.h
View File

@ -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_ */