drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c - pub/scm/linux/kernel/git/mzx/extcon - Git at Google

 /*
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */

 #include "mdp4_kms.h"

 #define DOWN_SCALE_MAX	8
 #define UP_SCALE_MAX	8

 struct mdp4_plane {
 	struct drm_plane base;
 	const char *name;

 	enum mdp4_pipe pipe;

 	uint32_t nformats;
 	uint32_t formats[32];

 	bool enabled;
 };
 #define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)

 /* MDP format helper functions */
 static inline
 enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
 {
 	bool is_tile = false;

 	if (fb->modifier[1] == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
 		is_tile = true;

 	if (fb->pixel_format == DRM_FORMAT_NV12 && is_tile)
 		return FRAME_TILE_YCBCR_420;

 	return FRAME_LINEAR;
 }

 static void mdp4_plane_set_scanout(struct drm_plane *plane,
 		struct drm_framebuffer *fb);
 static int mdp4_plane_mode_set(struct drm_plane *plane,
 		struct drm_crtc *crtc, struct drm_framebuffer *fb,
 		int crtc_x, int crtc_y,
 		unsigned int crtc_w, unsigned int crtc_h,
 		uint32_t src_x, uint32_t src_y,
 		uint32_t src_w, uint32_t src_h);

 static struct mdp4_kms *get_kms(struct drm_plane *plane)
 {
 	struct msm_drm_private *priv = plane->dev->dev_private;
 	return to_mdp4_kms(to_mdp_kms(priv->kms));
 }

 static void mdp4_plane_destroy(struct drm_plane *plane)
 {
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);

 	drm_plane_helper_disable(plane);
 	drm_plane_cleanup(plane);

 	kfree(mdp4_plane);
 }

 /* helper to install properties which are common to planes and crtcs */
 void mdp4_plane_install_properties(struct drm_plane *plane,
 		struct drm_mode_object *obj)
 {
 	// XXX
 }

 int mdp4_plane_set_property(struct drm_plane *plane,
 		struct drm_property *property, uint64_t val)
 {
 	// XXX
 	return -EINVAL;
 }

 static const struct drm_plane_funcs mdp4_plane_funcs = {
 		.update_plane = drm_atomic_helper_update_plane,
 		.disable_plane = drm_atomic_helper_disable_plane,
 		.destroy = mdp4_plane_destroy,
 		.set_property = mdp4_plane_set_property,
 		.reset = drm_atomic_helper_plane_reset,
 		.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 		.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 };

 static int mdp4_plane_prepare_fb(struct drm_plane *plane,
 		struct drm_framebuffer *fb,
 		const struct drm_plane_state *new_state)
 {
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
 	struct mdp4_kms *mdp4_kms = get_kms(plane);

 	DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id);
 	return msm_framebuffer_prepare(fb, mdp4_kms->id);
 }

 static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
 		struct drm_framebuffer *fb,
 		const struct drm_plane_state *old_state)
 {
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
 	struct mdp4_kms *mdp4_kms = get_kms(plane);

 	DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
 	msm_framebuffer_cleanup(fb, mdp4_kms->id);
 }


 static int mdp4_plane_atomic_check(struct drm_plane *plane,
 		struct drm_plane_state *state)
 {
 	return 0;
 }

 static void mdp4_plane_atomic_update(struct drm_plane *plane,
 				     struct drm_plane_state *old_state)
 {
 	struct drm_plane_state *state = plane->state;
 	int ret;

 	ret = mdp4_plane_mode_set(plane,
 			state->crtc, state->fb,
 			state->crtc_x, state->crtc_y,
 			state->crtc_w, state->crtc_h,
 			state->src_x,  state->src_y,
 			state->src_w, state->src_h);
 	/* atomic_check should have ensured that this doesn't fail */
 	WARN_ON(ret < 0);
 }

 static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
 		.prepare_fb = mdp4_plane_prepare_fb,
 		.cleanup_fb = mdp4_plane_cleanup_fb,
 		.atomic_check = mdp4_plane_atomic_check,
 		.atomic_update = mdp4_plane_atomic_update,
 };

 static void mdp4_plane_set_scanout(struct drm_plane *plane,
 		struct drm_framebuffer *fb)
 {
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
 	struct mdp4_kms *mdp4_kms = get_kms(plane);
 	enum mdp4_pipe pipe = mdp4_plane->pipe;

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
 			MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
 			MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
 			MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
 			MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
 			msm_framebuffer_iova(fb, mdp4_kms->id, 0));
 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
 			msm_framebuffer_iova(fb, mdp4_kms->id, 1));
 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
 			msm_framebuffer_iova(fb, mdp4_kms->id, 2));
 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
 			msm_framebuffer_iova(fb, mdp4_kms->id, 3));

 	plane->fb = fb;
 }

 static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
 		enum mdp4_pipe pipe, struct csc_cfg *csc)
 {
 	int i;

 	for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
 				csc->matrix[i]);
 	}

 	for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
 				csc->pre_bias[i]);

 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
 				csc->post_bias[i]);
 	}

 	for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
 				csc->pre_clamp[i]);

 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
 				csc->post_clamp[i]);
 	}
 }

 #define MDP4_VG_PHASE_STEP_DEFAULT	0x20000000

 static int mdp4_plane_mode_set(struct drm_plane *plane,
 		struct drm_crtc *crtc, struct drm_framebuffer *fb,
 		int crtc_x, int crtc_y,
 		unsigned int crtc_w, unsigned int crtc_h,
 		uint32_t src_x, uint32_t src_y,
 		uint32_t src_w, uint32_t src_h)
 {
 	struct drm_device *dev = plane->dev;
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
 	struct mdp4_kms *mdp4_kms = get_kms(plane);
 	enum mdp4_pipe pipe = mdp4_plane->pipe;
 	const struct mdp_format *format;
 	uint32_t op_mode = 0;
 	uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
 	uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
 	enum mdp4_frame_format frame_type;

 	if (!(crtc && fb)) {
 		DBG("%s: disabled!", mdp4_plane->name);
 		return 0;
 	}

 	frame_type = mdp4_get_frame_format(fb);

 	/* src values are in Q16 fixed point, convert to integer: */
 	src_x = src_x >> 16;
 	src_y = src_y >> 16;
 	src_w = src_w >> 16;
 	src_h = src_h >> 16;

 	DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
 			fb->base.id, src_x, src_y, src_w, src_h,
 			crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);

 	format = to_mdp_format(msm_framebuffer_format(fb));

 	if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
 		dev_err(dev->dev, "Width down scaling exceeds limits!\n");
 		return -ERANGE;
 	}

 	if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
 		dev_err(dev->dev, "Height down scaling exceeds limits!\n");
 		return -ERANGE;
 	}

 	if (crtc_w > (src_w * UP_SCALE_MAX)) {
 		dev_err(dev->dev, "Width up scaling exceeds limits!\n");
 		return -ERANGE;
 	}

 	if (crtc_h > (src_h * UP_SCALE_MAX)) {
 		dev_err(dev->dev, "Height up scaling exceeds limits!\n");
 		return -ERANGE;
 	}

 	if (src_w != crtc_w) {
 		uint32_t sel_unit = SCALE_FIR;
 		op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN;

 		if (MDP_FORMAT_IS_YUV(format)) {
 			if (crtc_w > src_w)
 				sel_unit = SCALE_PIXEL_RPT;
 			else if (crtc_w <= (src_w / 4))
 				sel_unit = SCALE_MN_PHASE;

 			op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
 			phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
 					src_w, crtc_w);
 		}
 	}

 	if (src_h != crtc_h) {
 		uint32_t sel_unit = SCALE_FIR;
 		op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN;

 		if (MDP_FORMAT_IS_YUV(format)) {

 			if (crtc_h > src_h)
 				sel_unit = SCALE_PIXEL_RPT;
 			else if (crtc_h <= (src_h / 4))
 				sel_unit = SCALE_MN_PHASE;

 			op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
 			phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
 					src_h, crtc_h);
 		}
 	}

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
 			MDP4_PIPE_SRC_SIZE_WIDTH(src_w) |
 			MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
 			MDP4_PIPE_SRC_XY_X(src_x) |
 			MDP4_PIPE_SRC_XY_Y(src_y));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
 			MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) |
 			MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
 			MDP4_PIPE_DST_XY_X(crtc_x) |
 			MDP4_PIPE_DST_XY_Y(crtc_y));

 	mdp4_plane_set_scanout(plane, fb);

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
 			MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
 			MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
 			MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
 			MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
 			COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
 			MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
 			MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
 			MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
 			MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
 			MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) |
 			COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
 			MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
 			MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
 			MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
 			MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));

 	if (MDP_FORMAT_IS_YUV(format)) {
 		struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);

 		op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR;
 		op_mode |= MDP4_PIPE_OP_MODE_CSC_EN;
 		mdp4_write_csc_config(mdp4_kms, pipe, csc);
 	}

 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
 	mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);

 	if (frame_type != FRAME_LINEAR)
 		mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
 				MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) |
 				MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));

 	return 0;
 }

 static const char *pipe_names[] = {
 		"VG1", "VG2",
 		"RGB1", "RGB2", "RGB3",
 		"VG3", "VG4",
 };

 enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
 {
 	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
 	return mdp4_plane->pipe;
 }

 /* initialize plane */
 struct drm_plane *mdp4_plane_init(struct drm_device *dev,
 		enum mdp4_pipe pipe_id, bool private_plane)
 {
 	struct drm_plane *plane = NULL;
 	struct mdp4_plane *mdp4_plane;
 	int ret;
 	enum drm_plane_type type;

 	mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
 	if (!mdp4_plane) {
 		ret = -ENOMEM;
 		goto fail;
 	}

 	plane = &mdp4_plane->base;

 	mdp4_plane->pipe = pipe_id;
 	mdp4_plane->name = pipe_names[pipe_id];

 	mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
 			ARRAY_SIZE(mdp4_plane->formats));

 	type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
 	ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
 				 mdp4_plane->formats, mdp4_plane->nformats, type);
 	if (ret)
 		goto fail;

 	drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);

 	mdp4_plane_install_properties(plane, &plane->base);

 	return plane;

 fail:
 	if (plane)
 		mdp4_plane_destroy(plane);

 	return ERR_PTR(ret);
 }
	/*
	* Copyright (C) 2013 Red Hat
	* Author: Rob Clark <robdclark@gmail.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published by
	* the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	* more details.
	*
	* You should have received a copy of the GNU General Public License along with
	* this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include "mdp4_kms.h"

	#define DOWN_SCALE_MAX 8
	#define UP_SCALE_MAX 8

	struct mdp4_plane {
	struct drm_plane base;
	const char *name;

	enum mdp4_pipe pipe;

	uint32_t nformats;
	uint32_t formats[32];

	bool enabled;
	};
	#define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)

	/* MDP format helper functions */
	static inline
	enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
	{
	bool is_tile = false;

	if (fb->modifier[1] == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
	is_tile = true;

	if (fb->pixel_format == DRM_FORMAT_NV12 && is_tile)
	return FRAME_TILE_YCBCR_420;

	return FRAME_LINEAR;
	}

	static void mdp4_plane_set_scanout(struct drm_plane *plane,
	struct drm_framebuffer *fb);
	static int mdp4_plane_mode_set(struct drm_plane *plane,
	struct drm_crtc crtc, struct drm_framebuffer fb,
	int crtc_x, int crtc_y,
	unsigned int crtc_w, unsigned int crtc_h,
	uint32_t src_x, uint32_t src_y,
	uint32_t src_w, uint32_t src_h);

	static struct mdp4_kms get_kms(struct drm_plane plane)
	{
	struct msm_drm_private *priv = plane->dev->dev_private;
	return to_mdp4_kms(to_mdp_kms(priv->kms));
	}

	static void mdp4_plane_destroy(struct drm_plane *plane)
	{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);

	drm_plane_helper_disable(plane);
	drm_plane_cleanup(plane);

	kfree(mdp4_plane);
	}

	/* helper to install properties which are common to planes and crtcs */
	void mdp4_plane_install_properties(struct drm_plane *plane,
	struct drm_mode_object *obj)
	{
	// XXX
	}

	int mdp4_plane_set_property(struct drm_plane *plane,
	struct drm_property *property, uint64_t val)
	{
	// XXX
	return -EINVAL;
	}

	static const struct drm_plane_funcs mdp4_plane_funcs = {
	.update_plane = drm_atomic_helper_update_plane,
	.disable_plane = drm_atomic_helper_disable_plane,
	.destroy = mdp4_plane_destroy,
	.set_property = mdp4_plane_set_property,
	.reset = drm_atomic_helper_plane_reset,
	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
	};

	static int mdp4_plane_prepare_fb(struct drm_plane *plane,
	struct drm_framebuffer *fb,
	const struct drm_plane_state *new_state)
	{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
	struct mdp4_kms *mdp4_kms = get_kms(plane);

	DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id);
	return msm_framebuffer_prepare(fb, mdp4_kms->id);
	}

	static void mdp4_plane_cleanup_fb(struct drm_plane *plane,
	struct drm_framebuffer *fb,
	const struct drm_plane_state *old_state)
	{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
	struct mdp4_kms *mdp4_kms = get_kms(plane);

	DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id);
	msm_framebuffer_cleanup(fb, mdp4_kms->id);
	}


	static int mdp4_plane_atomic_check(struct drm_plane *plane,
	struct drm_plane_state *state)
	{
	return 0;
	}

	static void mdp4_plane_atomic_update(struct drm_plane *plane,
	struct drm_plane_state *old_state)
	{
	struct drm_plane_state *state = plane->state;
	int ret;

	ret = mdp4_plane_mode_set(plane,
	state->crtc, state->fb,
	state->crtc_x, state->crtc_y,
	state->crtc_w, state->crtc_h,
	state->src_x, state->src_y,
	state->src_w, state->src_h);
	/* atomic_check should have ensured that this doesn't fail */
	WARN_ON(ret < 0);
	}

	static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = {
	.prepare_fb = mdp4_plane_prepare_fb,
	.cleanup_fb = mdp4_plane_cleanup_fb,
	.atomic_check = mdp4_plane_atomic_check,
	.atomic_update = mdp4_plane_atomic_update,
	};

	static void mdp4_plane_set_scanout(struct drm_plane *plane,
	struct drm_framebuffer *fb)
	{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
	struct mdp4_kms *mdp4_kms = get_kms(plane);
	enum mdp4_pipe pipe = mdp4_plane->pipe;

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe),
	MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) \|
	MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe),
	MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) \|
	MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe),
	msm_framebuffer_iova(fb, mdp4_kms->id, 0));
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe),
	msm_framebuffer_iova(fb, mdp4_kms->id, 1));
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe),
	msm_framebuffer_iova(fb, mdp4_kms->id, 2));
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe),
	msm_framebuffer_iova(fb, mdp4_kms->id, 3));

	plane->fb = fb;
	}

	static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms,
	enum mdp4_pipe pipe, struct csc_cfg *csc)
	{
	int i;

	for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) {
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i),
	csc->matrix[i]);
	}

	for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) {
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i),
	csc->pre_bias[i]);

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i),
	csc->post_bias[i]);
	}

	for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) {
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i),
	csc->pre_clamp[i]);

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i),
	csc->post_clamp[i]);
	}
	}

	#define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000

	static int mdp4_plane_mode_set(struct drm_plane *plane,
	struct drm_crtc crtc, struct drm_framebuffer fb,
	int crtc_x, int crtc_y,
	unsigned int crtc_w, unsigned int crtc_h,
	uint32_t src_x, uint32_t src_y,
	uint32_t src_w, uint32_t src_h)
	{
	struct drm_device *dev = plane->dev;
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
	struct mdp4_kms *mdp4_kms = get_kms(plane);
	enum mdp4_pipe pipe = mdp4_plane->pipe;
	const struct mdp_format *format;
	uint32_t op_mode = 0;
	uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
	uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
	enum mdp4_frame_format frame_type;

	if (!(crtc && fb)) {
	DBG("%s: disabled!", mdp4_plane->name);
	return 0;
	}

	frame_type = mdp4_get_frame_format(fb);

	/* src values are in Q16 fixed point, convert to integer: */
	src_x = src_x >> 16;
	src_y = src_y >> 16;
	src_w = src_w >> 16;
	src_h = src_h >> 16;

	DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name,
	fb->base.id, src_x, src_y, src_w, src_h,
	crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);

	format = to_mdp_format(msm_framebuffer_format(fb));

	if (src_w > (crtc_w * DOWN_SCALE_MAX)) {
	dev_err(dev->dev, "Width down scaling exceeds limits!\n");
	return -ERANGE;
	}

	if (src_h > (crtc_h * DOWN_SCALE_MAX)) {
	dev_err(dev->dev, "Height down scaling exceeds limits!\n");
	return -ERANGE;
	}

	if (crtc_w > (src_w * UP_SCALE_MAX)) {
	dev_err(dev->dev, "Width up scaling exceeds limits!\n");
	return -ERANGE;
	}

	if (crtc_h > (src_h * UP_SCALE_MAX)) {
	dev_err(dev->dev, "Height up scaling exceeds limits!\n");
	return -ERANGE;
	}

	if (src_w != crtc_w) {
	uint32_t sel_unit = SCALE_FIR;
	op_mode \|= MDP4_PIPE_OP_MODE_SCALEX_EN;

	if (MDP_FORMAT_IS_YUV(format)) {
	if (crtc_w > src_w)
	sel_unit = SCALE_PIXEL_RPT;
	else if (crtc_w <= (src_w / 4))
	sel_unit = SCALE_MN_PHASE;

	op_mode \|= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit);
	phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
	src_w, crtc_w);
	}
	}

	if (src_h != crtc_h) {
	uint32_t sel_unit = SCALE_FIR;
	op_mode \|= MDP4_PIPE_OP_MODE_SCALEY_EN;

	if (MDP_FORMAT_IS_YUV(format)) {

	if (crtc_h > src_h)
	sel_unit = SCALE_PIXEL_RPT;
	else if (crtc_h <= (src_h / 4))
	sel_unit = SCALE_MN_PHASE;

	op_mode \|= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit);
	phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT,
	src_h, crtc_h);
	}
	}

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe),
	MDP4_PIPE_SRC_SIZE_WIDTH(src_w) \|
	MDP4_PIPE_SRC_SIZE_HEIGHT(src_h));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe),
	MDP4_PIPE_SRC_XY_X(src_x) \|
	MDP4_PIPE_SRC_XY_Y(src_y));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe),
	MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) \|
	MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe),
	MDP4_PIPE_DST_XY_X(crtc_x) \|
	MDP4_PIPE_DST_XY_Y(crtc_y));

	mdp4_plane_set_scanout(plane, fb);

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe),
	MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) \|
	MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) \|
	MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) \|
	MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) \|
	COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) \|
	MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) \|
	MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) \|
	MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) \|
	MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) \|
	MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) \|
	COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
	MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) \|
	MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) \|
	MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) \|
	MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));

	if (MDP_FORMAT_IS_YUV(format)) {
	struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB);

	op_mode \|= MDP4_PIPE_OP_MODE_SRC_YCBCR;
	op_mode \|= MDP4_PIPE_OP_MODE_CSC_EN;
	mdp4_write_csc_config(mdp4_kms, pipe, csc);
	}

	mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode);
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);

	if (frame_type != FRAME_LINEAR)
	mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
	MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) \|
	MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));

	return 0;
	}

	static const char *pipe_names[] = {
	"VG1", "VG2",
	"RGB1", "RGB2", "RGB3",
	"VG3", "VG4",
	};

	enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane)
	{
	struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane);
	return mdp4_plane->pipe;
	}

	/* initialize plane */
	struct drm_plane mdp4_plane_init(struct drm_device dev,
	enum mdp4_pipe pipe_id, bool private_plane)
	{
	struct drm_plane *plane = NULL;
	struct mdp4_plane *mdp4_plane;
	int ret;
	enum drm_plane_type type;

	mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL);
	if (!mdp4_plane) {
	ret = -ENOMEM;
	goto fail;
	}

	plane = &mdp4_plane->base;

	mdp4_plane->pipe = pipe_id;
	mdp4_plane->name = pipe_names[pipe_id];

	mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats,
	ARRAY_SIZE(mdp4_plane->formats));

	type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
	ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs,
	mdp4_plane->formats, mdp4_plane->nformats, type);
	if (ret)
	goto fail;

	drm_plane_helper_add(plane, &mdp4_plane_helper_funcs);

	mdp4_plane_install_properties(plane, &plane->base);

	return plane;

	fail:
	if (plane)
	mdp4_plane_destroy(plane);

	return ERR_PTR(ret);
	}