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disp: msm: add support for variable compression ratios

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Currently the compression ratio is hard-coded to either 2:1 or
3:1 in several places. This is not sufficient for new compression
algorithms as they can support higher compression ratios.

Add support for calculating the compression ratios from the source
and target bpp thereby eliminating hard-coding.

Change-Id: I6383f3d0c781193d0a9ed74df5a95d8e856edb3d
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
This commit is contained in:
Abhinav Kumar
2019-11-14 19:17:52 -08:00
committed by Gerrit - the friendly Code Review server
parent 27844b7b60
commit e3f23771ba
5 changed files with 49 additions and 34 deletions
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20
msm/msm_drv.h
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@@ -228,20 +228,8 @@ enum msm_display_compression_type {
MSM_DISPLAY_COMPRESSION_VDC
};
/**
* enum msm_display_compression_ratio - compression ratio
* @MSM_DISPLAY_COMPRESSION_NONE: no compression
* @MSM_DISPLAY_COMPRESSION_RATIO_2_TO_1: 2 to 1 compression
* @MSM_DISPLAY_COMPRESSION_RATIO_3_TO_1: 3 to 1 compression
* @MSM_DISPLAY_COMPRESSION_RATIO_4_TO_1: 4 to 1 compression
*/
enum msm_display_compression_ratio {
MSM_DISPLAY_COMPRESSION_RATIO_NONE,
MSM_DISPLAY_COMPRESSION_RATIO_2_TO_1,
MSM_DISPLAY_COMPRESSION_RATIO_3_TO_1,
MSM_DISPLAY_COMPRESSION_RATIO_4_TO_1,
MSM_DISPLAY_COMPRESSION_RATIO_MAX,
};
#define MSM_DISPLAY_COMPRESSION_RATIO_NONE 1
#define MSM_DISPLAY_COMPRESSION_RATIO_MAX 5
/**
* enum msm_display_caps - features/capabilities supported by displays
@@ -606,7 +594,7 @@ struct msm_display_vdc_info {
*/
struct msm_compression_info {
enum msm_display_compression_type comp_type;
enum msm_display_compression_ratio comp_ratio;
u32 comp_ratio;
union{
struct msm_display_dsc_info dsc_info;
@@ -1231,4 +1219,6 @@ int msm_get_mixer_count(struct msm_drm_private *priv,
const struct drm_display_mode *mode,
const struct msm_resource_caps_info *res, u32 *num_lm);
int msm_get_src_bpc(int chroma_format, int bpc);
#endif /* __MSM_DRV_H__ */