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Commit ea29a285 authored by Saurabh Shah's avatar Saurabh Shah
Browse files

msm: mdss: add support for rotator downscale 



Add support for rotator downscale, available from 8994. This allows
source data to be downscaled via power of 2 steps, before being
written back to memory.

Change-Id: If42a5a8c9cb336abfc22dc9848c24ec0f54cd878
Signed-off-by: default avatarCasey Piper <cpiper@codeaurora.org>
Signed-off-by: default avatarSaurabh Shah <saurshah@codeaurora.org>
Signed-off-by: default avatarAdrian Salido-Moreno <adrianm@codeaurora.org>
parent 648cfa62

Documentation/devicetree/bindings/fb/mdss-mdp.txt

+3 −0
Original line number Diff line number Diff line
@@ -270,6 +270,8 @@ Optional properties: 
			    access the memory.

- qcom,mdss-has-source-split: Boolean property to indicate if source split

			      feature is available or not.

- qcom,mdss-has-rotator-downscale: Boolean property to indicate if rotator

				   downscale feature is available or not.

- qcom,mdss-ad-off:		Array of offset addresses for the available

				Assertive Display (AD) blocks. These offsets

				are calculated from the register "mdp_phys"
@@ -524,6 +526,7 @@ Example: 
		qcom,mdss-no-lut-read;

		qcom,mdss-no-hist-vote;

		qcom,mdss-traffic-shaper-enabled;

		qcom,mdss-has-rotator-downscale;



		qcom,mdss-has-dst-split;

		qcom,mdss-pipe-vig-xin-id = <0 4 8>;

drivers/video/msm/mdss/mdss.h

+1 −0
Original line number Diff line number Diff line
@@ -241,6 +241,7 @@ struct mdss_data_type { 
	int iommu_ref_cnt;

	u32 latency_buff_per;

	atomic_t active_intf_cnt;

	bool has_rot_dwnscale;



	u64 ab_rt[MDSS_MAX_HW_BLK];

	u64 ab_nrt[MDSS_MAX_HW_BLK];

drivers/video/msm/mdss/mdss_mdp.c

+4 −1
Original line number Diff line number Diff line
@@ -1449,6 +1449,8 @@ static ssize_t mdss_mdp_show_capabilities(struct device *dev, 
		SPRINT(" src_split");

	if (mdata->max_mixer_width)

		SPRINT(" max_mixer_width");

	if (mdata->has_rot_dwnscale)

		SPRINT(" rotator_downscale");

	SPRINT("\n");



	return cnt;
@@ -2728,7 +2730,8 @@ static int mdss_mdp_parse_dt_misc(struct platform_device *pdev) 
	mdss_mdp_parse_vbif_qos(pdev);

	mdata->traffic_shaper_en = of_property_read_bool(pdev->dev.of_node,

		 "qcom,mdss-traffic-shaper-enabled");



	mdata->has_rot_dwnscale = of_property_read_bool(pdev->dev.of_node,

		"qcom,mdss-has-rotator-downscale");

	return 0;

}

drivers/video/msm/mdss/mdss_mdp_hwio.h

+1 −0
Original line number Diff line number Diff line
@@ -397,6 +397,7 @@ enum mdss_mdp_writeback_index { 
#define MDSS_MDP_REG_WB_DST_MATRIX_ROW3			0x03C

#define MDSS_MDP_REG_WB_DST_WRITE_CONFIG		0x048

#define MDSS_MDP_REG_WB_ROTATION_DNSCALER		0x050

#define MDSS_MDP_REG_WB_ROTATOR_PIPE_DOWNSCALER		0x054

#define MDSS_MDP_REG_WB_N16_INIT_PHASE_X_C03		0x060

#define MDSS_MDP_REG_WB_N16_INIT_PHASE_X_C12		0x064

#define MDSS_MDP_REG_WB_N16_INIT_PHASE_Y_C03		0x068

drivers/video/msm/mdss/mdss_mdp_intf_writeback.c

+17 −7
Original line number Diff line number Diff line
@@ -53,6 +53,9 @@ struct mdss_mdp_writeback_ctx { 
	u16 height;

	struct mdss_rect dst_rect;



	u32 dnsc_factor_w;

	u32 dnsc_factor_h;



	u8 rot90;

	u32 bwc_mode;

	int initialized;
@@ -140,6 +143,7 @@ static int mdss_mdp_writeback_format_setup(struct mdss_mdp_writeback_ctx *ctx, 
{

	struct mdss_mdp_format_params *fmt;

	u32 dst_format, pattern, ystride0, ystride1, outsize, chroma_samp;

	u32 dnsc_factor;

	u32 opmode = ctx->opmode;

	bool rotation = false;

	struct mdss_data_type *mdata;
@@ -227,6 +231,12 @@ static int mdss_mdp_writeback_format_setup(struct mdss_mdp_writeback_ctx *ctx, 
		   (ctx->dst_planes.ystride[3] << 16);

	outsize = (ctx->dst_rect.h << 16) | ctx->dst_rect.w;



	if (ctx->type == MDSS_MDP_WRITEBACK_TYPE_ROTATOR &&

			mdata->has_rot_dwnscale) {

		dnsc_factor = (ctx->dnsc_factor_h) | (ctx->dnsc_factor_w << 16);

		mdp_wb_write(ctx, MDSS_MDP_REG_WB_ROTATOR_PIPE_DOWNSCALER,

								dnsc_factor);

	}

	mdp_wb_write(ctx, MDSS_MDP_REG_WB_ALPHA_X_VALUE, 0xFF);

	mdp_wb_write(ctx, MDSS_MDP_REG_WB_DST_FORMAT, dst_format);

	mdp_wb_write(ctx, MDSS_MDP_REG_WB_DST_OP_MODE, opmode);
@@ -306,12 +316,14 @@ static int mdss_mdp_writeback_prepare_rot(struct mdss_mdp_ctl *ctl, void *arg) 
	ctx->bwc_mode = rot->bwc_mode;

	ctx->opmode |= ctx->bwc_mode;



	ctx->width = rot->dst.w;

	ctx->height = rot->dst.h;

	ctx->width = ctx->dst_rect.w = rot->dnsc_factor_w ?

		rot->dst.w / rot->dnsc_factor_w : rot->dst.w;

	ctx->height = ctx->dst_rect.h = rot->dnsc_factor_h ?

		rot->dst.h / rot->dnsc_factor_h : rot->dst.h;

	ctx->dst_rect.x = rot->dst.x;

	ctx->dst_rect.y = rot->dst.y;

	ctx->dst_rect.w = rot->src_rect.w;

	ctx->dst_rect.h = rot->src_rect.h;

	ctx->dnsc_factor_w = rot->dnsc_factor_w;

	ctx->dnsc_factor_h = rot->dnsc_factor_h;



	ctx->rot90 = !!(rot->flags & MDP_ROT_90);
@@ -327,10 +339,8 @@ static int mdss_mdp_writeback_prepare_rot(struct mdss_mdp_ctl *ctl, void *arg) 
	else

		format = rot->format;



	if (ctx->rot90) {

	if (ctx->rot90)

		ctx->opmode |= BIT(5); /* ROT 90 */

		swap(ctx->dst_rect.w, ctx->dst_rect.h);

	}



	return mdss_mdp_writeback_format_setup(ctx, format);

}