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Commit 05a142c2 authored by Bich Hemon's avatar Bich Hemon Committed by Vincent Abriou
Browse files

drm/sti: adapt YUV colorspace in display pipeline 



Use BT601 for SD/ED resolution and BT709 for HD resolution

Signed-off-by: default avatarBich Hemon <bich.hemon@st.com>
Reviewed-by: default avatarBenjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: default avatarVincent Abriou <vincent.abriou@st.com>
parent dd86dc2f

drivers/gpu/drm/sti/sti_tvout.c

+39 −22
Original line number Diff line number Diff line
@@ -95,6 +95,8 @@ 


#define ENCODER_CRTC_MASK                (BIT(0) | BIT(1))



#define TVO_MIN_HD_HEIGHT                720



/* enum listing the supported output data format */

enum sti_tvout_video_out_type {

	STI_TVOUT_VIDEO_OUT_RGB,
@@ -257,6 +259,31 @@ static void tvout_vip_set_in_vid_fmt(struct sti_tvout *tvout, 
	tvout_write(tvout, val, reg);

}



/**

 * Set preformatter matrix

 *

 * @tvout: tvout structure

 * @mode: display mode structure

 */

static void tvout_preformatter_set_matrix(struct sti_tvout *tvout,

					  struct drm_display_mode *mode)

{

	unsigned int i;

	const u32 *pf_matrix;



	if (mode->vdisplay >= TVO_MIN_HD_HEIGHT)

		pf_matrix = rgb_to_ycbcr_709;

	else

		pf_matrix = rgb_to_ycbcr_601;



	for (i = 0; i < 8; i++) {

		tvout_write(tvout, *(pf_matrix + i),

			    TVO_CSC_MAIN_M0 + (i * 4));

		tvout_write(tvout, *(pf_matrix + i),

			    TVO_CSC_AUX_M0 + (i * 4));

	}

}



/**

 * Start VIP block for DVO output

 *
@@ -447,10 +474,6 @@ static void sti_tvout_encoder_mode_set(struct drm_encoder *encoder, 
{

}



static void sti_tvout_encoder_prepare(struct drm_encoder *encoder)

{

}



static void sti_tvout_encoder_destroy(struct drm_encoder *encoder)

{

	struct sti_tvout_encoder *sti_encoder = to_sti_tvout_encoder(encoder);
@@ -463,10 +486,12 @@ static const struct drm_encoder_funcs sti_tvout_encoder_funcs = { 
	.destroy = sti_tvout_encoder_destroy,

};



static void sti_dvo_encoder_commit(struct drm_encoder *encoder)

static void sti_dvo_encoder_enable(struct drm_encoder *encoder)

{

	struct sti_tvout *tvout = to_sti_tvout(encoder);



	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);



	tvout_dvo_start(tvout, sti_crtc_is_main(encoder->crtc));

}
@@ -481,8 +506,7 @@ static void sti_dvo_encoder_disable(struct drm_encoder *encoder) 
static const struct drm_encoder_helper_funcs sti_dvo_encoder_helper_funcs = {

	.dpms = sti_tvout_encoder_dpms,

	.mode_set = sti_tvout_encoder_mode_set,

	.prepare = sti_tvout_encoder_prepare,

	.commit = sti_dvo_encoder_commit,

	.enable = sti_dvo_encoder_enable,

	.disable = sti_dvo_encoder_disable,

};
@@ -513,10 +537,12 @@ sti_tvout_create_dvo_encoder(struct drm_device *dev, 
	return drm_encoder;

}



static void sti_hda_encoder_commit(struct drm_encoder *encoder)

static void sti_hda_encoder_enable(struct drm_encoder *encoder)

{

	struct sti_tvout *tvout = to_sti_tvout(encoder);



	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);



	tvout_hda_start(tvout, sti_crtc_is_main(encoder->crtc));

}
@@ -534,8 +560,7 @@ static void sti_hda_encoder_disable(struct drm_encoder *encoder) 
static const struct drm_encoder_helper_funcs sti_hda_encoder_helper_funcs = {

	.dpms = sti_tvout_encoder_dpms,

	.mode_set = sti_tvout_encoder_mode_set,

	.prepare = sti_tvout_encoder_prepare,

	.commit = sti_hda_encoder_commit,

	.commit = sti_hda_encoder_enable,

	.disable = sti_hda_encoder_disable,

};
@@ -564,10 +589,12 @@ static struct drm_encoder *sti_tvout_create_hda_encoder(struct drm_device *dev, 
	return drm_encoder;

}



static void sti_hdmi_encoder_commit(struct drm_encoder *encoder)

static void sti_hdmi_encoder_enable(struct drm_encoder *encoder)

{

	struct sti_tvout *tvout = to_sti_tvout(encoder);



	tvout_preformatter_set_matrix(tvout, &encoder->crtc->mode);



	tvout_hdmi_start(tvout, sti_crtc_is_main(encoder->crtc));

}
@@ -582,8 +609,7 @@ static void sti_hdmi_encoder_disable(struct drm_encoder *encoder) 
static const struct drm_encoder_helper_funcs sti_hdmi_encoder_helper_funcs = {

	.dpms = sti_tvout_encoder_dpms,

	.mode_set = sti_tvout_encoder_mode_set,

	.prepare = sti_tvout_encoder_prepare,

	.commit = sti_hdmi_encoder_commit,

	.commit = sti_hdmi_encoder_enable,

	.disable = sti_hdmi_encoder_disable,

};
@@ -635,18 +661,9 @@ static int sti_tvout_bind(struct device *dev, struct device *master, void *data) 
{

	struct sti_tvout *tvout = dev_get_drvdata(dev);

	struct drm_device *drm_dev = data;

	unsigned int i;



	tvout->drm_dev = drm_dev;



	/* set preformatter matrix */

	for (i = 0; i < 8; i++) {

		tvout_write(tvout, rgb_to_ycbcr_601[i],

			TVO_CSC_MAIN_M0 + (i * 4));

		tvout_write(tvout, rgb_to_ycbcr_601[i],

			TVO_CSC_AUX_M0 + (i * 4));

	}



	sti_tvout_create_encoders(drm_dev, tvout);



	return 0;

drivers/gpu/drm/sti/sti_vid.c

+25 −6
Original line number Diff line number Diff line
@@ -42,6 +42,17 @@ 
#define VID_MPR1_BT709          0x0AC50000

#define VID_MPR2_BT709          0x07150545

#define VID_MPR3_BT709          0x00000AE8

/* YCbCr to RGB BT709:

 * R = Y+1.3711Cr

 * G = Y-0.6992Cr-0.3359Cb

 * B = Y+1.7344Cb

 */

#define VID_MPR0_BT601          0x0A800000

#define VID_MPR1_BT601          0x0AAF0000

#define VID_MPR2_BT601          0x094E0754

#define VID_MPR3_BT601          0x00000ADD



#define VID_MIN_HD_HEIGHT       720



void sti_vid_commit(struct sti_vid *vid,

		    struct drm_plane_state *state)
@@ -52,6 +63,7 @@ void sti_vid_commit(struct sti_vid *vid, 
	int dst_y = state->crtc_y;

	int dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);

	int dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);

	int src_h = state->src_h >> 16;

	u32 val, ydo, xdo, yds, xds;



	/* Input / output size
@@ -71,6 +83,19 @@ void sti_vid_commit(struct sti_vid *vid, 


	writel((ydo << 16) | xdo, vid->regs + VID_VPO);

	writel((yds << 16) | xds, vid->regs + VID_VPS);



	/* Color conversion parameters */

	if (src_h >= VID_MIN_HD_HEIGHT) {

		writel(VID_MPR0_BT709, vid->regs + VID_MPR0);

		writel(VID_MPR1_BT709, vid->regs + VID_MPR1);

		writel(VID_MPR2_BT709, vid->regs + VID_MPR2);

		writel(VID_MPR3_BT709, vid->regs + VID_MPR3);

	} else {

		writel(VID_MPR0_BT601, vid->regs + VID_MPR0);

		writel(VID_MPR1_BT601, vid->regs + VID_MPR1);

		writel(VID_MPR2_BT601, vid->regs + VID_MPR2);

		writel(VID_MPR3_BT601, vid->regs + VID_MPR3);

	}

}



void sti_vid_disable(struct sti_vid *vid)
@@ -91,12 +116,6 @@ static void sti_vid_init(struct sti_vid *vid) 
	/* Opaque */

	writel(VID_ALP_OPAQUE, vid->regs + VID_ALP);



	/* Color conversion parameters */

	writel(VID_MPR0_BT709, vid->regs + VID_MPR0);

	writel(VID_MPR1_BT709, vid->regs + VID_MPR1);

	writel(VID_MPR2_BT709, vid->regs + VID_MPR2);

	writel(VID_MPR3_BT709, vid->regs + VID_MPR3);



	/* Brightness, contrast, tint, saturation */

	writel(VID_BC_DFLT, vid->regs + VID_BC);

	writel(VID_TINT_DFLT, vid->regs + VID_TINT);