Commit 68858328 authored by Jessica Zhang's avatar Jessica Zhang Committed by Dmitry Baryshkov
Browse files

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: default avatarMarijn Suijten <marijn.suijten@somainline.org>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: default avatarJessica 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: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent e871a70d

drivers/gpu/drm/display/drm_dsc_helper.c

+13 −0
Original line number Diff line number Diff line
@@ -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

include/drm/display/drm_dsc_helper.h

+1 −0
Original line number Diff line number Diff line
@@ -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_ */