[mirror_ubuntu-jammy-kernel.git] / drivers / gpu / drm / imx / ipuv3-plane.c

/*
 * i.MX IPUv3 DP Overlay Planes
 *
 * Copyright (C) 2013 Philipp Zabel, Pengutronix
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 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.
 */

#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>

#include "video/imx-ipu-v3.h"
#include "ipuv3-plane.h"

static inline struct ipu_plane *to_ipu_plane(struct drm_plane *p)
{
	return container_of(p, struct ipu_plane, base);
}

static const uint32_t ipu_plane_formats[] = {
	DRM_FORMAT_ARGB1555,
	DRM_FORMAT_XRGB1555,
	DRM_FORMAT_ABGR1555,
	DRM_FORMAT_XBGR1555,
	DRM_FORMAT_RGBA5551,
	DRM_FORMAT_BGRA5551,
	DRM_FORMAT_ARGB4444,
	DRM_FORMAT_ARGB8888,
	DRM_FORMAT_XRGB8888,
	DRM_FORMAT_ABGR8888,
	DRM_FORMAT_XBGR8888,
	DRM_FORMAT_RGBA8888,
	DRM_FORMAT_RGBX8888,
	DRM_FORMAT_BGRA8888,
	DRM_FORMAT_BGRA8888,
	DRM_FORMAT_UYVY,
	DRM_FORMAT_VYUY,
	DRM_FORMAT_YUYV,
	DRM_FORMAT_YVYU,
	DRM_FORMAT_YUV420,
	DRM_FORMAT_YVU420,
	DRM_FORMAT_YUV422,
	DRM_FORMAT_YVU422,
	DRM_FORMAT_YUV444,
	DRM_FORMAT_YVU444,
	DRM_FORMAT_NV12,
	DRM_FORMAT_NV16,
	DRM_FORMAT_RGB565,
};

int ipu_plane_irq(struct ipu_plane *ipu_plane)
{
	return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
				     IPU_IRQ_EOF);
}

static inline unsigned long
drm_plane_state_to_eba(struct drm_plane_state *state)
{
	struct drm_framebuffer *fb = state->fb;
	struct drm_gem_cma_object *cma_obj;
	int x = state->src_x >> 16;
	int y = state->src_y >> 16;

	cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
	BUG_ON(!cma_obj);

	return cma_obj->paddr + fb->offsets[0] + fb->pitches[0] * y +
	       fb->format->cpp[0] * x;
}

static inline unsigned long
drm_plane_state_to_ubo(struct drm_plane_state *state)
{
	struct drm_framebuffer *fb = state->fb;
	struct drm_gem_cma_object *cma_obj;
	unsigned long eba = drm_plane_state_to_eba(state);
	int x = state->src_x >> 16;
	int y = state->src_y >> 16;

	cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
	BUG_ON(!cma_obj);

	x /= drm_format_horz_chroma_subsampling(fb->format->format);
	y /= drm_format_vert_chroma_subsampling(fb->format->format);

	return cma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
	       fb->format->cpp[1] * x - eba;
}

static inline unsigned long
drm_plane_state_to_vbo(struct drm_plane_state *state)
{
	struct drm_framebuffer *fb = state->fb;
	struct drm_gem_cma_object *cma_obj;
	unsigned long eba = drm_plane_state_to_eba(state);
	int x = state->src_x >> 16;
	int y = state->src_y >> 16;

	cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
	BUG_ON(!cma_obj);

	x /= drm_format_horz_chroma_subsampling(fb->format->format);
	y /= drm_format_vert_chroma_subsampling(fb->format->format);

	return cma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
	       fb->format->cpp[2] * x - eba;
}

void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
{
	if (!IS_ERR_OR_NULL(ipu_plane->dp))
		ipu_dp_put(ipu_plane->dp);
	if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
		ipu_dmfc_put(ipu_plane->dmfc);
	if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
		ipu_idmac_put(ipu_plane->ipu_ch);
}

int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
{
	int ret;

	ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
	if (IS_ERR(ipu_plane->ipu_ch)) {
		ret = PTR_ERR(ipu_plane->ipu_ch);
		DRM_ERROR("failed to get idmac channel: %d\n", ret);
		return ret;
	}

	ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
	if (IS_ERR(ipu_plane->dmfc)) {
		ret = PTR_ERR(ipu_plane->dmfc);
		DRM_ERROR("failed to get dmfc: ret %d\n", ret);
		goto err_out;
	}

	if (ipu_plane->dp_flow >= 0) {
		ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
		if (IS_ERR(ipu_plane->dp)) {
			ret = PTR_ERR(ipu_plane->dp);
			DRM_ERROR("failed to get dp flow: %d\n", ret);
			goto err_out;
		}
	}

	return 0;
err_out:
	ipu_plane_put_resources(ipu_plane);

	return ret;
}

static void ipu_plane_enable(struct ipu_plane *ipu_plane)
{
	if (ipu_plane->dp)
		ipu_dp_enable(ipu_plane->ipu);
	ipu_dmfc_enable_channel(ipu_plane->dmfc);
	ipu_idmac_enable_channel(ipu_plane->ipu_ch);
	if (ipu_plane->dp)
		ipu_dp_enable_channel(ipu_plane->dp);
}

static int ipu_disable_plane(struct drm_plane *plane)
{
	struct ipu_plane *ipu_plane = to_ipu_plane(plane);

	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);

	ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);

	if (ipu_plane->dp)
		ipu_dp_disable_channel(ipu_plane->dp);
	ipu_idmac_disable_channel(ipu_plane->ipu_ch);
	ipu_dmfc_disable_channel(ipu_plane->dmfc);
	if (ipu_plane->dp)
		ipu_dp_disable(ipu_plane->ipu);

	return 0;
}

static void ipu_plane_destroy(struct drm_plane *plane)
{
	struct ipu_plane *ipu_plane = to_ipu_plane(plane);

	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);

	drm_plane_cleanup(plane);
	kfree(ipu_plane);
}

static const struct drm_plane_funcs ipu_plane_funcs = {
	.update_plane	= drm_atomic_helper_update_plane,
	.disable_plane	= drm_atomic_helper_disable_plane,
	.destroy	= ipu_plane_destroy,
	.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 ipu_plane_atomic_check(struct drm_plane *plane,
				  struct drm_plane_state *state)
{
	struct drm_plane_state *old_state = plane->state;
	struct drm_crtc_state *crtc_state;
	struct device *dev = plane->dev->dev;
	struct drm_framebuffer *fb = state->fb;
	struct drm_framebuffer *old_fb = old_state->fb;
	unsigned long eba, ubo, vbo, old_ubo, old_vbo;
	int hsub, vsub;

	/* Ok to disable */
	if (!fb)
		return 0;

	if (!state->crtc)
		return -EINVAL;

	crtc_state =
		drm_atomic_get_existing_crtc_state(state->state, state->crtc);
	if (WARN_ON(!crtc_state))
		return -EINVAL;

	/* CRTC should be enabled */
	if (!crtc_state->enable)
		return -EINVAL;

	/* no scaling */
	if (state->src_w >> 16 != state->crtc_w ||
	    state->src_h >> 16 != state->crtc_h)
		return -EINVAL;

	switch (plane->type) {
	case DRM_PLANE_TYPE_PRIMARY:
		/* full plane doesn't support partial off screen */
		if (state->crtc_x || state->crtc_y ||
		    state->crtc_w != crtc_state->adjusted_mode.hdisplay ||
		    state->crtc_h != crtc_state->adjusted_mode.vdisplay)
			return -EINVAL;

		/* full plane minimum width is 13 pixels */
		if (state->crtc_w < 13)
			return -EINVAL;
		break;
	case DRM_PLANE_TYPE_OVERLAY:
		if (state->crtc_x < 0 || state->crtc_y < 0)
			return -EINVAL;

		if (state->crtc_x + state->crtc_w >
		    crtc_state->adjusted_mode.hdisplay)
			return -EINVAL;
		if (state->crtc_y + state->crtc_h >
		    crtc_state->adjusted_mode.vdisplay)
			return -EINVAL;
		break;
	default:
		dev_warn(dev, "Unsupported plane type\n");
		return -EINVAL;
	}

	if (state->crtc_h < 2)
		return -EINVAL;

	/*
	 * We support resizing active plane or changing its format by
	 * forcing CRTC mode change in plane's ->atomic_check callback
	 * and disabling all affected active planes in CRTC's ->atomic_disable
	 * callback.  The planes will be reenabled in plane's ->atomic_update
	 * callback.
	 */
	if (old_fb && (state->src_w != old_state->src_w ||
			      state->src_h != old_state->src_h ||
			      fb->format->format != old_fb->format->format))
		crtc_state->mode_changed = true;

	eba = drm_plane_state_to_eba(state);

	if (eba & 0x7)
		return -EINVAL;

	if (fb->pitches[0] < 1 || fb->pitches[0] > 16384)
		return -EINVAL;

	if (old_fb && fb->pitches[0] != old_fb->pitches[0])
		crtc_state->mode_changed = true;

	switch (fb->format->format) {
	case DRM_FORMAT_YUV420:
	case DRM_FORMAT_YVU420:
	case DRM_FORMAT_YUV422:
	case DRM_FORMAT_YVU422:
	case DRM_FORMAT_YUV444:
	case DRM_FORMAT_YVU444:
		/*
		 * Multiplanar formats have to meet the following restrictions:
		 * - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
		 * - EBA, UBO and VBO are a multiple of 8
		 * - UBO and VBO are unsigned and not larger than 0xfffff8
		 * - Only EBA may be changed while scanout is active
		 * - The strides of U and V planes must be identical.
		 */
		vbo = drm_plane_state_to_vbo(state);

		if (vbo & 0x7 || vbo > 0xfffff8)
			return -EINVAL;

		if (old_fb && (fb->format->format == old_fb->format->format)) {
			old_vbo = drm_plane_state_to_vbo(old_state);
			if (vbo != old_vbo)
				crtc_state->mode_changed = true;
		}

		if (fb->pitches[1] != fb->pitches[2])
			return -EINVAL;

		/* fall-through */
	case DRM_FORMAT_NV12:
	case DRM_FORMAT_NV16:
		ubo = drm_plane_state_to_ubo(state);

		if (ubo & 0x7 || ubo > 0xfffff8)
			return -EINVAL;

		if (old_fb && (fb->format->format == old_fb->format->format)) {
			old_ubo = drm_plane_state_to_ubo(old_state);
			if (ubo != old_ubo)
				crtc_state->mode_changed = true;
		}

		if (fb->pitches[1] < 1 || fb->pitches[1] > 16384)
			return -EINVAL;

		if (old_fb && old_fb->pitches[1] != fb->pitches[1])
			crtc_state->mode_changed = true;

		/*
		 * The x/y offsets must be even in case of horizontal/vertical
		 * chroma subsampling.
		 */
		hsub = drm_format_horz_chroma_subsampling(fb->format->format);
		vsub = drm_format_vert_chroma_subsampling(fb->format->format);
		if (((state->src_x >> 16) & (hsub - 1)) ||
		    ((state->src_y >> 16) & (vsub - 1)))
			return -EINVAL;
	}

	return 0;
}

static void ipu_plane_atomic_disable(struct drm_plane *plane,
				     struct drm_plane_state *old_state)
{
	ipu_disable_plane(plane);
}

static void ipu_plane_atomic_update(struct drm_plane *plane,
				    struct drm_plane_state *old_state)
{
	struct ipu_plane *ipu_plane = to_ipu_plane(plane);
	struct drm_plane_state *state = plane->state;
	struct drm_crtc_state *crtc_state = state->crtc->state;
	struct drm_framebuffer *fb = state->fb;
	unsigned long eba, ubo, vbo;
	enum ipu_color_space ics;
	int active;

	eba = drm_plane_state_to_eba(state);

	if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state)) {
		active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
		ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
		ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
		return;
	}

	switch (ipu_plane->dp_flow) {
	case IPU_DP_FLOW_SYNC_BG:
		ipu_dp_setup_channel(ipu_plane->dp,
					IPUV3_COLORSPACE_RGB,
					IPUV3_COLORSPACE_RGB);
		ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
		break;
	case IPU_DP_FLOW_SYNC_FG:
		ics = ipu_drm_fourcc_to_colorspace(state->fb->format->format);
		ipu_dp_setup_channel(ipu_plane->dp, ics,
					IPUV3_COLORSPACE_UNKNOWN);
		ipu_dp_set_window_pos(ipu_plane->dp, state->crtc_x,
					state->crtc_y);
		/* Enable local alpha on partial plane */
		switch (state->fb->format->format) {
		case DRM_FORMAT_ARGB1555:
		case DRM_FORMAT_ABGR1555:
		case DRM_FORMAT_RGBA5551:
		case DRM_FORMAT_BGRA5551:
		case DRM_FORMAT_ARGB4444:
		case DRM_FORMAT_ARGB8888:
		case DRM_FORMAT_ABGR8888:
		case DRM_FORMAT_RGBA8888:
		case DRM_FORMAT_BGRA8888:
			ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
			break;
		default:
			ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
			break;
		}
	}

	ipu_dmfc_config_wait4eot(ipu_plane->dmfc, state->crtc_w);

	ipu_cpmem_zero(ipu_plane->ipu_ch);
	ipu_cpmem_set_resolution(ipu_plane->ipu_ch, state->src_w >> 16,
					state->src_h >> 16);
	ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->format->format);
	ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
	ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
	ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]);
	switch (fb->format->format) {
	case DRM_FORMAT_YUV420:
	case DRM_FORMAT_YVU420:
	case DRM_FORMAT_YUV422:
	case DRM_FORMAT_YVU422:
	case DRM_FORMAT_YUV444:
	case DRM_FORMAT_YVU444:
		ubo = drm_plane_state_to_ubo(state);
		vbo = drm_plane_state_to_vbo(state);
		if (fb->format->format == DRM_FORMAT_YVU420 ||
		    fb->format->format == DRM_FORMAT_YVU422 ||
		    fb->format->format == DRM_FORMAT_YVU444)
			swap(ubo, vbo);

		ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
					      fb->pitches[1], ubo, vbo);

		dev_dbg(ipu_plane->base.dev->dev,
			"phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
			state->src_x >> 16, state->src_y >> 16);
		break;
	case DRM_FORMAT_NV12:
	case DRM_FORMAT_NV16:
		ubo = drm_plane_state_to_ubo(state);

		ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
					      fb->pitches[1], ubo, ubo);

		dev_dbg(ipu_plane->base.dev->dev,
			"phy = %lu %lu, x = %d, y = %d", eba, ubo,
			state->src_x >> 16, state->src_y >> 16);
		break;
	default:
		dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
			eba, state->src_x >> 16, state->src_y >> 16);
		break;
	}
	ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
	ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
	ipu_plane_enable(ipu_plane);
}

static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
	.prepare_fb = drm_fb_cma_prepare_fb,
	.atomic_check = ipu_plane_atomic_check,
	.atomic_disable = ipu_plane_atomic_disable,
	.atomic_update = ipu_plane_atomic_update,
};

struct ipu_plane *ipu_plane_init(struct drm_device *dev, struct ipu_soc *ipu,
				 int dma, int dp, unsigned int possible_crtcs,
				 enum drm_plane_type type)
{
	struct ipu_plane *ipu_plane;
	int ret;

	DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
		      dma, dp, possible_crtcs);

	ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
	if (!ipu_plane) {
		DRM_ERROR("failed to allocate plane\n");
		return ERR_PTR(-ENOMEM);
	}

	ipu_plane->ipu = ipu;
	ipu_plane->dma = dma;
	ipu_plane->dp_flow = dp;

	ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
				       &ipu_plane_funcs, ipu_plane_formats,
				       ARRAY_SIZE(ipu_plane_formats), type,
				       NULL);
	if (ret) {
		DRM_ERROR("failed to initialize plane\n");
		kfree(ipu_plane);
		return ERR_PTR(ret);
	}

	drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);

	return ipu_plane;
}
Commit	Line	Data
b8d181e4 PZ	1	/*
	2	* i.MX IPUv3 DP Overlay Planes
	3	*
	4	* Copyright (C) 2013 Philipp Zabel, Pengutronix
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version 2
	9	* of the License, or (at your option) any later version.
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*/
	15
	16	#include <drm/drmP.h>
5f2f9115	17	#include <drm/drm_atomic.h>
255c35f8	18	#include <drm/drm_atomic_helper.h>
b8d181e4 PZ	19	#include <drm/drm_fb_cma_helper.h>
b8d181e4 PZ	20	#include <drm/drm_gem_cma_helper.h>
33f14235	21	#include <drm/drm_plane_helper.h>
b8d181e4	22
39b9004d	23	#include "video/imx-ipu-v3.h"
b8d181e4 PZ	24	#include "ipuv3-plane.h"
b8d181e4 PZ	25
3df07390 PZ	26	static inline struct ipu_plane to_ipu_plane(struct drm_plane p)
	27	{
	28	return container_of(p, struct ipu_plane, base);
	29	}
b8d181e4 PZ	30
b8d181e4 PZ	31	static const uint32_t ipu_plane_formats[] = {
c639a1cf	32	DRM_FORMAT_ARGB1555,
b8d181e4	33	DRM_FORMAT_XRGB1555,
c639a1cf	34	DRM_FORMAT_ABGR1555,
b8d181e4	35	DRM_FORMAT_XBGR1555,
c639a1cf PZ	36	DRM_FORMAT_RGBA5551,
c639a1cf PZ	37	DRM_FORMAT_BGRA5551,
cb166a30	38	DRM_FORMAT_ARGB4444,
b8d181e4 PZ	39	DRM_FORMAT_ARGB8888,
	40	DRM_FORMAT_XRGB8888,
	41	DRM_FORMAT_ABGR8888,
	42	DRM_FORMAT_XBGR8888,
59d6b718 PZ	43	DRM_FORMAT_RGBA8888,
	44	DRM_FORMAT_RGBX8888,
	45	DRM_FORMAT_BGRA8888,
	46	DRM_FORMAT_BGRA8888,
7932131f PZ	47	DRM_FORMAT_UYVY,
7932131f PZ	48	DRM_FORMAT_VYUY,
b8d181e4 PZ	49	DRM_FORMAT_YUYV,
	50	DRM_FORMAT_YVYU,
	51	DRM_FORMAT_YUV420,
	52	DRM_FORMAT_YVU420,
eae13c93 PZ	53	DRM_FORMAT_YUV422,
	54	DRM_FORMAT_YVU422,
	55	DRM_FORMAT_YUV444,
	56	DRM_FORMAT_YVU444,
	57	DRM_FORMAT_NV12,
	58	DRM_FORMAT_NV16,
33bee520	59	DRM_FORMAT_RGB565,
b8d181e4 PZ	60	};
	61
	62	int ipu_plane_irq(struct ipu_plane *ipu_plane)
	63	{
	64	return ipu_idmac_channel_irq(ipu_plane->ipu, ipu_plane->ipu_ch,
	65	IPU_IRQ_EOF);
	66	}
	67
33f14235 LY	68	static inline unsigned long
33f14235 LY	69	drm_plane_state_to_eba(struct drm_plane_state *state)
b8d181e4	70	{
33f14235 LY	71	struct drm_framebuffer *fb = state->fb;
33f14235 LY	72	struct drm_gem_cma_object *cma_obj;
f2fa3536 PZ	73	int x = state->src_x >> 16;
f2fa3536 PZ	74	int y = state->src_y >> 16;
b8d181e4	75
33f14235 LY	76	cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
33f14235 LY	77	BUG_ON(!cma_obj);
b8d181e4	78
f2fa3536	79	return cma_obj->paddr + fb->offsets[0] + fb->pitches[0] * y +
353c8598	80	fb->format->cpp[0] * x;
33f14235	81	}
08a89018	82
33f14235 LY	83	static inline unsigned long
	84	drm_plane_state_to_ubo(struct drm_plane_state *state)
	85	{
	86	struct drm_framebuffer *fb = state->fb;
	87	struct drm_gem_cma_object *cma_obj;
	88	unsigned long eba = drm_plane_state_to_eba(state);
f2fa3536 PZ	89	int x = state->src_x >> 16;
f2fa3536 PZ	90	int y = state->src_y >> 16;
b8d181e4	91
33f14235 LY	92	cma_obj = drm_fb_cma_get_gem_obj(fb, 1);
33f14235 LY	93	BUG_ON(!cma_obj);
9a666030	94
438b74a5 VS	95	x /= drm_format_horz_chroma_subsampling(fb->format->format);
438b74a5 VS	96	y /= drm_format_vert_chroma_subsampling(fb->format->format);
f2fa3536 PZ	97
f2fa3536 PZ	98	return cma_obj->paddr + fb->offsets[1] + fb->pitches[1] * y +
353c8598	99	fb->format->cpp[1] * x - eba;
33f14235	100	}
9a666030	101
33f14235 LY	102	static inline unsigned long
	103	drm_plane_state_to_vbo(struct drm_plane_state *state)
	104	{
	105	struct drm_framebuffer *fb = state->fb;
	106	struct drm_gem_cma_object *cma_obj;
	107	unsigned long eba = drm_plane_state_to_eba(state);
f2fa3536 PZ	108	int x = state->src_x >> 16;
f2fa3536 PZ	109	int y = state->src_y >> 16;
33f14235 LY	110
	111	cma_obj = drm_fb_cma_get_gem_obj(fb, 2);
	112	BUG_ON(!cma_obj);
	113
438b74a5 VS	114	x /= drm_format_horz_chroma_subsampling(fb->format->format);
438b74a5 VS	115	y /= drm_format_vert_chroma_subsampling(fb->format->format);
f2fa3536 PZ	116
f2fa3536 PZ	117	return cma_obj->paddr + fb->offsets[2] + fb->pitches[2] * y +
353c8598	118	fb->format->cpp[2] * x - eba;
33f14235 LY	119	}
33f14235 LY	120
b8d181e4 PZ	121	void ipu_plane_put_resources(struct ipu_plane *ipu_plane)
	122	{
	123	if (!IS_ERR_OR_NULL(ipu_plane->dp))
	124	ipu_dp_put(ipu_plane->dp);
	125	if (!IS_ERR_OR_NULL(ipu_plane->dmfc))
	126	ipu_dmfc_put(ipu_plane->dmfc);
	127	if (!IS_ERR_OR_NULL(ipu_plane->ipu_ch))
	128	ipu_idmac_put(ipu_plane->ipu_ch);
	129	}
	130
	131	int ipu_plane_get_resources(struct ipu_plane *ipu_plane)
	132	{
	133	int ret;
	134
	135	ipu_plane->ipu_ch = ipu_idmac_get(ipu_plane->ipu, ipu_plane->dma);
	136	if (IS_ERR(ipu_plane->ipu_ch)) {
	137	ret = PTR_ERR(ipu_plane->ipu_ch);
	138	DRM_ERROR("failed to get idmac channel: %d\n", ret);
	139	return ret;
	140	}
	141
	142	ipu_plane->dmfc = ipu_dmfc_get(ipu_plane->ipu, ipu_plane->dma);
	143	if (IS_ERR(ipu_plane->dmfc)) {
	144	ret = PTR_ERR(ipu_plane->dmfc);
	145	DRM_ERROR("failed to get dmfc: ret %d\n", ret);
	146	goto err_out;
	147	}
	148
	149	if (ipu_plane->dp_flow >= 0) {
	150	ipu_plane->dp = ipu_dp_get(ipu_plane->ipu, ipu_plane->dp_flow);
	151	if (IS_ERR(ipu_plane->dp)) {
	152	ret = PTR_ERR(ipu_plane->dp);
	153	DRM_ERROR("failed to get dp flow: %d\n", ret);
	154	goto err_out;
	155	}
	156	}
	157
	158	return 0;
	159	err_out:
	160	ipu_plane_put_resources(ipu_plane);
	161
	162	return ret;
	163	}
	164
33f14235	165	static void ipu_plane_enable(struct ipu_plane *ipu_plane)
b8d181e4	166	{
285bbb01 PZ	167	if (ipu_plane->dp)
285bbb01 PZ	168	ipu_dp_enable(ipu_plane->ipu);
b8d181e4 PZ	169	ipu_dmfc_enable_channel(ipu_plane->dmfc);
	170	ipu_idmac_enable_channel(ipu_plane->ipu_ch);
	171	if (ipu_plane->dp)
	172	ipu_dp_enable_channel(ipu_plane->dp);
b8d181e4 PZ	173	}
b8d181e4 PZ	174
df4b2233	175	static int ipu_disable_plane(struct drm_plane *plane)
b8d181e4	176	{
df4b2233 LS	177	struct ipu_plane *ipu_plane = to_ipu_plane(plane);
	178
	179	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
	180
b8d181e4 PZ	181	ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
	182
	183	if (ipu_plane->dp)
	184	ipu_dp_disable_channel(ipu_plane->dp);
	185	ipu_idmac_disable_channel(ipu_plane->ipu_ch);
	186	ipu_dmfc_disable_channel(ipu_plane->dmfc);
285bbb01 PZ	187	if (ipu_plane->dp)
285bbb01 PZ	188	ipu_dp_disable(ipu_plane->ipu);
b8d181e4 PZ	189
	190	return 0;
	191	}
	192
33f14235	193	static void ipu_plane_destroy(struct drm_plane *plane)
b8d181e4 PZ	194	{
	195	struct ipu_plane *ipu_plane = to_ipu_plane(plane);
	196
	197	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
	198
33f14235 LY	199	drm_plane_cleanup(plane);
	200	kfree(ipu_plane);
	201	}
b8d181e4	202
33f14235	203	static const struct drm_plane_funcs ipu_plane_funcs = {
5f2f9115 LY	204	.update_plane = drm_atomic_helper_update_plane,
5f2f9115 LY	205	.disable_plane = drm_atomic_helper_disable_plane,
33f14235	206	.destroy = ipu_plane_destroy,
255c35f8 LY	207	.reset = drm_atomic_helper_plane_reset,
	208	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
	209	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
33f14235 LY	210	};
	211
	212	static int ipu_plane_atomic_check(struct drm_plane *plane,
	213	struct drm_plane_state *state)
	214	{
	215	struct drm_plane_state *old_state = plane->state;
	216	struct drm_crtc_state *crtc_state;
	217	struct device *dev = plane->dev->dev;
	218	struct drm_framebuffer *fb = state->fb;
	219	struct drm_framebuffer *old_fb = old_state->fb;
	220	unsigned long eba, ubo, vbo, old_ubo, old_vbo;
5fb57ab3	221	int hsub, vsub;
33f14235 LY	222
	223	/* Ok to disable */
	224	if (!fb)
5f2f9115 LY	225	return 0;
	226
	227	if (!state->crtc)
	228	return -EINVAL;
	229
	230	crtc_state =
	231	drm_atomic_get_existing_crtc_state(state->state, state->crtc);
	232	if (WARN_ON(!crtc_state))
	233	return -EINVAL;
33f14235 LY	234
33f14235 LY	235	/* CRTC should be enabled */
5f2f9115	236	if (!crtc_state->enable)
33f14235 LY	237	return -EINVAL;
	238
	239	/* no scaling */
	240	if (state->src_w >> 16 != state->crtc_w \|\|
	241	state->src_h >> 16 != state->crtc_h)
	242	return -EINVAL;
	243
33f14235 LY	244	switch (plane->type) {
	245	case DRM_PLANE_TYPE_PRIMARY:
	246	/* full plane doesn't support partial off screen */
	247	if (state->crtc_x \|\| state->crtc_y \|\|
	248	state->crtc_w != crtc_state->adjusted_mode.hdisplay \|\|
	249	state->crtc_h != crtc_state->adjusted_mode.vdisplay)
	250	return -EINVAL;
	251
	252	/* full plane minimum width is 13 pixels */
	253	if (state->crtc_w < 13)
	254	return -EINVAL;
	255	break;
	256	case DRM_PLANE_TYPE_OVERLAY:
	257	if (state->crtc_x < 0 \|\| state->crtc_y < 0)
	258	return -EINVAL;
	259
	260	if (state->crtc_x + state->crtc_w >
	261	crtc_state->adjusted_mode.hdisplay)
	262	return -EINVAL;
	263	if (state->crtc_y + state->crtc_h >
	264	crtc_state->adjusted_mode.vdisplay)
	265	return -EINVAL;
	266	break;
	267	default:
	268	dev_warn(dev, "Unsupported plane type\n");
	269	return -EINVAL;
	270	}
	271
	272	if (state->crtc_h < 2)
	273	return -EINVAL;
	274
	275	/*
1780999c LY	276	* We support resizing active plane or changing its format by
	277	* forcing CRTC mode change in plane's ->atomic_check callback
	278	* and disabling all affected active planes in CRTC's ->atomic_disable
	279	* callback. The planes will be reenabled in plane's ->atomic_update
	280	* callback.
33f14235 LY	281	*/
	282	if (old_fb && (state->src_w != old_state->src_w \|\|
	283	state->src_h != old_state->src_h \|\|
438b74a5	284	fb->format->format != old_fb->format->format))
1780999c	285	crtc_state->mode_changed = true;
33f14235 LY	286
	287	eba = drm_plane_state_to_eba(state);
	288
	289	if (eba & 0x7)
	290	return -EINVAL;
	291
	292	if (fb->pitches[0] < 1 \|\| fb->pitches[0] > 16384)
	293	return -EINVAL;
	294
	295	if (old_fb && fb->pitches[0] != old_fb->pitches[0])
1780999c	296	crtc_state->mode_changed = true;
33f14235	297
438b74a5	298	switch (fb->format->format) {
33f14235 LY	299	case DRM_FORMAT_YUV420:
33f14235 LY	300	case DRM_FORMAT_YVU420:
eae13c93 PZ	301	case DRM_FORMAT_YUV422:
	302	case DRM_FORMAT_YVU422:
	303	case DRM_FORMAT_YUV444:
	304	case DRM_FORMAT_YVU444:
33f14235 LY	305	/*
	306	* Multiplanar formats have to meet the following restrictions:
	307	* - The (up to) three plane addresses are EBA, EBA+UBO, EBA+VBO
	308	* - EBA, UBO and VBO are a multiple of 8
	309	* - UBO and VBO are unsigned and not larger than 0xfffff8
	310	* - Only EBA may be changed while scanout is active
	311	* - The strides of U and V planes must be identical.
	312	*/
33f14235 LY	313	vbo = drm_plane_state_to_vbo(state);
33f14235 LY	314
eae13c93	315	if (vbo & 0x7 \|\| vbo > 0xfffff8)
33f14235 LY	316	return -EINVAL;
33f14235 LY	317
438b74a5	318	if (old_fb && (fb->format->format == old_fb->format->format)) {
33f14235	319	old_vbo = drm_plane_state_to_vbo(old_state);
eae13c93	320	if (vbo != old_vbo)
181c9bfe	321	crtc_state->mode_changed = true;
33f14235 LY	322	}
	323
	324	if (fb->pitches[1] != fb->pitches[2])
	325	return -EINVAL;
	326
eae13c93 PZ	327	/* fall-through */
	328	case DRM_FORMAT_NV12:
	329	case DRM_FORMAT_NV16:
	330	ubo = drm_plane_state_to_ubo(state);
	331
	332	if (ubo & 0x7 \|\| ubo > 0xfffff8)
	333	return -EINVAL;
	334
438b74a5	335	if (old_fb && (fb->format->format == old_fb->format->format)) {
eae13c93 PZ	336	old_ubo = drm_plane_state_to_ubo(old_state);
	337	if (ubo != old_ubo)
	338	crtc_state->mode_changed = true;
	339	}
	340
33f14235 LY	341	if (fb->pitches[1] < 1 \|\| fb->pitches[1] > 16384)
	342	return -EINVAL;
	343
	344	if (old_fb && old_fb->pitches[1] != fb->pitches[1])
1780999c	345	crtc_state->mode_changed = true;
5fb57ab3 PZ	346
	347	/*
	348	* The x/y offsets must be even in case of horizontal/vertical
	349	* chroma subsampling.
	350	*/
438b74a5 VS	351	hsub = drm_format_horz_chroma_subsampling(fb->format->format);
438b74a5 VS	352	vsub = drm_format_vert_chroma_subsampling(fb->format->format);
5fb57ab3 PZ	353	if (((state->src_x >> 16) & (hsub - 1)) \|\|
	354	((state->src_y >> 16) & (vsub - 1)))
	355	return -EINVAL;
33f14235	356	}
b8d181e4 PZ	357
	358	return 0;
	359	}
	360
33f14235 LY	361	static void ipu_plane_atomic_disable(struct drm_plane *plane,
	362	struct drm_plane_state *old_state)
	363	{
	364	ipu_disable_plane(plane);
	365	}
	366
	367	static void ipu_plane_atomic_update(struct drm_plane *plane,
	368	struct drm_plane_state *old_state)
b8d181e4 PZ	369	{
b8d181e4 PZ	370	struct ipu_plane *ipu_plane = to_ipu_plane(plane);
33f14235	371	struct drm_plane_state *state = plane->state;
3fd8b292 PZ	372	struct drm_crtc_state *crtc_state = state->crtc->state;
	373	struct drm_framebuffer *fb = state->fb;
	374	unsigned long eba, ubo, vbo;
33f14235	375	enum ipu_color_space ics;
3fd8b292	376	int active;
b8d181e4	377
3fd8b292	378	eba = drm_plane_state_to_eba(state);
5f4df0c7	379
3fd8b292 PZ	380	if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state)) {
	381	active = ipu_idmac_get_current_buffer(ipu_plane->ipu_ch);
	382	ipu_cpmem_set_buffer(ipu_plane->ipu_ch, !active, eba);
	383	ipu_idmac_select_buffer(ipu_plane->ipu_ch, !active);
	384	return;
33f14235	385	}
b8d181e4	386
33f14235 LY	387	switch (ipu_plane->dp_flow) {
	388	case IPU_DP_FLOW_SYNC_BG:
	389	ipu_dp_setup_channel(ipu_plane->dp,
	390	IPUV3_COLORSPACE_RGB,
	391	IPUV3_COLORSPACE_RGB);
	392	ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
	393	break;
	394	case IPU_DP_FLOW_SYNC_FG:
438b74a5	395	ics = ipu_drm_fourcc_to_colorspace(state->fb->format->format);
33f14235 LY	396	ipu_dp_setup_channel(ipu_plane->dp, ics,
	397	IPUV3_COLORSPACE_UNKNOWN);
	398	ipu_dp_set_window_pos(ipu_plane->dp, state->crtc_x,
	399	state->crtc_y);
	400	/* Enable local alpha on partial plane */
438b74a5	401	switch (state->fb->format->format) {
33f14235 LY	402	case DRM_FORMAT_ARGB1555:
	403	case DRM_FORMAT_ABGR1555:
	404	case DRM_FORMAT_RGBA5551:
	405	case DRM_FORMAT_BGRA5551:
	406	case DRM_FORMAT_ARGB4444:
	407	case DRM_FORMAT_ARGB8888:
	408	case DRM_FORMAT_ABGR8888:
	409	case DRM_FORMAT_RGBA8888:
	410	case DRM_FORMAT_BGRA8888:
	411	ipu_dp_set_global_alpha(ipu_plane->dp, false, 0, false);
	412	break;
	413	default:
86126748	414	ipu_dp_set_global_alpha(ipu_plane->dp, true, 0, true);
33f14235 LY	415	break;
	416	}
	417	}
	418
	419	ipu_dmfc_config_wait4eot(ipu_plane->dmfc, state->crtc_w);
	420
	421	ipu_cpmem_zero(ipu_plane->ipu_ch);
	422	ipu_cpmem_set_resolution(ipu_plane->ipu_ch, state->src_w >> 16,
	423	state->src_h >> 16);
438b74a5	424	ipu_cpmem_set_fmt(ipu_plane->ipu_ch, state->fb->format->format);
33f14235 LY	425	ipu_cpmem_set_high_priority(ipu_plane->ipu_ch);
	426	ipu_idmac_set_double_buffer(ipu_plane->ipu_ch, 1);
	427	ipu_cpmem_set_stride(ipu_plane->ipu_ch, state->fb->pitches[0]);
438b74a5	428	switch (fb->format->format) {
3fd8b292 PZ	429	case DRM_FORMAT_YUV420:
3fd8b292 PZ	430	case DRM_FORMAT_YVU420:
eae13c93 PZ	431	case DRM_FORMAT_YUV422:
	432	case DRM_FORMAT_YVU422:
	433	case DRM_FORMAT_YUV444:
	434	case DRM_FORMAT_YVU444:
3fd8b292 PZ	435	ubo = drm_plane_state_to_ubo(state);
3fd8b292 PZ	436	vbo = drm_plane_state_to_vbo(state);
438b74a5 VS	437	if (fb->format->format == DRM_FORMAT_YVU420 \|\|
	438	fb->format->format == DRM_FORMAT_YVU422 \|\|
	439	fb->format->format == DRM_FORMAT_YVU444)
eae13c93	440	swap(ubo, vbo);
3fd8b292	441
eae13c93 PZ	442	ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
eae13c93 PZ	443	fb->pitches[1], ubo, vbo);
3fd8b292 PZ	444
	445	dev_dbg(ipu_plane->base.dev->dev,
	446	"phy = %lu %lu %lu, x = %d, y = %d", eba, ubo, vbo,
	447	state->src_x >> 16, state->src_y >> 16);
	448	break;
eae13c93 PZ	449	case DRM_FORMAT_NV12:
	450	case DRM_FORMAT_NV16:
	451	ubo = drm_plane_state_to_ubo(state);
	452
	453	ipu_cpmem_set_yuv_planar_full(ipu_plane->ipu_ch,
	454	fb->pitches[1], ubo, ubo);
	455
	456	dev_dbg(ipu_plane->base.dev->dev,
	457	"phy = %lu %lu, x = %d, y = %d", eba, ubo,
	458	state->src_x >> 16, state->src_y >> 16);
	459	break;
3fd8b292 PZ	460	default:
	461	dev_dbg(ipu_plane->base.dev->dev, "phys = %lu, x = %d, y = %d",
	462	eba, state->src_x >> 16, state->src_y >> 16);
	463	break;
	464	}
	465	ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 0, eba);
	466	ipu_cpmem_set_buffer(ipu_plane->ipu_ch, 1, eba);
33f14235	467	ipu_plane_enable(ipu_plane);
b8d181e4 PZ	468	}
b8d181e4 PZ	469
33f14235	470	static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
782ea2a4	471	.prepare_fb = drm_fb_cma_prepare_fb,
33f14235 LY	472	.atomic_check = ipu_plane_atomic_check,
	473	.atomic_disable = ipu_plane_atomic_disable,
	474	.atomic_update = ipu_plane_atomic_update,
b8d181e4 PZ	475	};
	476
	477	struct ipu_plane ipu_plane_init(struct drm_device dev, struct ipu_soc *ipu,
	478	int dma, int dp, unsigned int possible_crtcs,
43895599	479	enum drm_plane_type type)
b8d181e4 PZ	480	{
	481	struct ipu_plane *ipu_plane;
	482	int ret;
	483
	484	DRM_DEBUG_KMS("channel %d, dp flow %d, possible_crtcs=0x%x\n",
	485	dma, dp, possible_crtcs);
	486
	487	ipu_plane = kzalloc(sizeof(*ipu_plane), GFP_KERNEL);
	488	if (!ipu_plane) {
	489	DRM_ERROR("failed to allocate plane\n");
	490	return ERR_PTR(-ENOMEM);
	491	}
	492
	493	ipu_plane->ipu = ipu;
	494	ipu_plane->dma = dma;
	495	ipu_plane->dp_flow = dp;
	496
43895599 PZ	497	ret = drm_universal_plane_init(dev, &ipu_plane->base, possible_crtcs,
43895599 PZ	498	&ipu_plane_funcs, ipu_plane_formats,
b0b3b795 VS	499	ARRAY_SIZE(ipu_plane_formats), type,
b0b3b795 VS	500	NULL);
b8d181e4 PZ	501	if (ret) {
	502	DRM_ERROR("failed to initialize plane\n");
	503	kfree(ipu_plane);
	504	return ERR_PTR(ret);
	505	}
	506
33f14235 LY	507	drm_plane_helper_add(&ipu_plane->base, &ipu_plane_helper_funcs);
33f14235 LY	508
b8d181e4 PZ	509	return ipu_plane;
b8d181e4 PZ	510	}