Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6244f0a8 authored by Abhijit Kulkarni's avatar Abhijit Kulkarni
Browse files

disp: msm: sde: fix dsc 1_2 rate control parameter 



This change fixes the rate control parameter namely
first_line_bpg_offset as per recommended hardware
settings.

Change-Id: I88cfc745443cdf6b96a8fca01306dec8a7572b1f
Signed-off-by: default avatarAbhijit Kulkarni <kabhijit@codeaurora.org>
parent 7a98aa21

msm/sde_dsc_helper.c

+44 −8
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ static u16 sde_dsc_rc_buf_thresh[DSC_NUM_BUF_RANGES - 1] = 
 */

static char sde_dsc_rc_range_min_qp[DSC_RATIO_TYPE_MAX][DSC_NUM_BUF_RANGES] = {

	/* DSC v1.1 */

	{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 12},

	{0, 0, 1, 1, 3, 3, 3, 3, 3, 3, 5, 5, 5, 7, 13},

	{0, 4, 5, 5, 7, 7, 7, 7, 7, 7, 9, 9, 9, 11, 17},

	{0, 4, 5, 6, 7, 7, 7, 7, 7, 7, 9, 9, 9, 11, 15},

	/* DSC v1.1 SCR and DSC v1.2 RGB 444 */
@@ -180,6 +180,36 @@ static int _get_rc_table_index(struct drm_dsc_config *dsc, int scr_ver) 
	return -EINVAL;

}



u8 _get_dsc_v1_2_bpg_offset(struct drm_dsc_config *dsc)

{

	u8 bpg_offset = 0;

	u8 uncompressed_bpg_rate;

	u8 bpp = DSC_BPP(*dsc);



	if (dsc->slice_height < 8)

		bpg_offset = 2 * (dsc->slice_height - 1);

	else if (dsc->slice_height < 20)

		bpg_offset = 12;

	else if (dsc->slice_height <= 30)

		bpg_offset = 13;

	else if (dsc->slice_height < 42)

		bpg_offset = 14;

	else

		bpg_offset = 15;



	if (dsc->native_422)

		uncompressed_bpg_rate = 3 * bpp * 4;

	else if (dsc->native_420)

		uncompressed_bpg_rate = 3 * bpp;

	else

		uncompressed_bpg_rate = (3 * bpp + 2) * 3;



	if (bpg_offset < (uncompressed_bpg_rate - (3 * bpp)))

		return bpg_offset;

	else

		return (uncompressed_bpg_rate - (3 * bpp));

}



int sde_dsc_populate_dsc_config(struct drm_dsc_config *dsc, int scr_ver) {

	int bpp, bpc;

	int groups_per_line, groups_total;
@@ -193,12 +223,15 @@ int sde_dsc_populate_dsc_config(struct drm_dsc_config *dsc, int scr_ver) { 


	dsc->rc_model_size = 8192;



	if (dsc->dsc_version_major == 0x1 && ((dsc->dsc_version_minor == 0x1 &&

			scr_ver == 0x1) ||

			(dsc->dsc_version_minor == 0x2)))

	if ((dsc->dsc_version_major == 0x1) &&

			(dsc->dsc_version_minor == 0x1)) {

		if (scr_ver == 0x1)

			dsc->first_line_bpg_offset = 15;

		else

			dsc->first_line_bpg_offset = 12;

	} else if (dsc->dsc_version_minor == 0x2) {

		dsc->first_line_bpg_offset = _get_dsc_v1_2_bpg_offset(dsc);

	}



	dsc->rc_edge_factor = 6;

	dsc->rc_tgt_offset_high = 3;
@@ -499,7 +532,10 @@ int sde_dsc_create_pps_buf_cmd(struct msm_display_dsc_info *dsc_info, 
	}



	if (dsc->dsc_version_minor == 0x2) {

		data = dsc->native_422 | dsc->native_420 << 1;

		if (dsc->native_422)

			data = BIT(0);

		else if (dsc->native_420)

			data = BIT(1);

		*bp++ = data;				/* pps88 */

		*bp++ = dsc->second_line_bpg_offset;	/* pps89 */