[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / meson / meson_crtc.c

/*
 * Copyright (C) 2016 BayLibre, SAS
 * Author: Neil Armstrong <narmstrong@baylibre.com>
 * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
 * Copyright (C) 2014 Endless Mobile
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 * Written by:
 *     Jasper St. Pierre <jstpierre@mecheye.net>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_flip_work.h>
#include <drm/drm_crtc_helper.h>

#include "meson_crtc.h"
#include "meson_plane.h"
#include "meson_venc.h"
#include "meson_vpp.h"
#include "meson_viu.h"
#include "meson_canvas.h"
#include "meson_registers.h"

/* CRTC definition */

struct meson_crtc {
	struct drm_crtc base;
	struct drm_pending_vblank_event *event;
	struct meson_drm *priv;
};
#define to_meson_crtc(x) container_of(x, struct meson_crtc, base)

/* CRTC */

static int meson_crtc_enable_vblank(struct drm_crtc *crtc)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	struct meson_drm *priv = meson_crtc->priv;

	meson_venc_enable_vsync(priv);

	return 0;
}

static void meson_crtc_disable_vblank(struct drm_crtc *crtc)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	struct meson_drm *priv = meson_crtc->priv;

	meson_venc_disable_vsync(priv);
}

static const struct drm_crtc_funcs meson_crtc_funcs = {
	.atomic_destroy_state	= drm_atomic_helper_crtc_destroy_state,
	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
	.destroy		= drm_crtc_cleanup,
	.page_flip		= drm_atomic_helper_page_flip,
	.reset			= drm_atomic_helper_crtc_reset,
	.set_config             = drm_atomic_helper_set_config,
	.enable_vblank		= meson_crtc_enable_vblank,
	.disable_vblank		= meson_crtc_disable_vblank,

};

static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
				     struct drm_crtc_state *old_state)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	struct drm_crtc_state *crtc_state = crtc->state;
	struct meson_drm *priv = meson_crtc->priv;

	DRM_DEBUG_DRIVER("\n");

	if (!crtc_state) {
		DRM_ERROR("Invalid crtc_state\n");
		return;
	}

	/* Enable VPP Postblend */
	writel(crtc_state->mode.hdisplay,
	       priv->io_base + _REG(VPP_POSTBLEND_H_SIZE));

	writel_bits_relaxed(VPP_POSTBLEND_ENABLE, VPP_POSTBLEND_ENABLE,
			    priv->io_base + _REG(VPP_MISC));

	priv->viu.osd1_enabled = true;
}

static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
				      struct drm_crtc_state *old_state)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	struct meson_drm *priv = meson_crtc->priv;

	priv->viu.osd1_enabled = false;
	priv->viu.osd1_commit = false;

	/* Disable VPP Postblend */
	writel_bits_relaxed(VPP_POSTBLEND_ENABLE, 0,
			    priv->io_base + _REG(VPP_MISC));

	if (crtc->state->event && !crtc->state->active) {
		spin_lock_irq(&crtc->dev->event_lock);
		drm_crtc_send_vblank_event(crtc, crtc->state->event);
		spin_unlock_irq(&crtc->dev->event_lock);

		crtc->state->event = NULL;
	}
}

static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
				    struct drm_crtc_state *state)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	unsigned long flags;

	if (crtc->state->event) {
		WARN_ON(drm_crtc_vblank_get(crtc) != 0);

		spin_lock_irqsave(&crtc->dev->event_lock, flags);
		meson_crtc->event = crtc->state->event;
		spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
		crtc->state->event = NULL;
	}
}

static void meson_crtc_atomic_flush(struct drm_crtc *crtc,
				    struct drm_crtc_state *old_crtc_state)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	struct meson_drm *priv = meson_crtc->priv;

	priv->viu.osd1_commit = true;
}

static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = {
	.atomic_begin	= meson_crtc_atomic_begin,
	.atomic_flush	= meson_crtc_atomic_flush,
	.atomic_enable	= meson_crtc_atomic_enable,
	.atomic_disable	= meson_crtc_atomic_disable,
};

void meson_crtc_irq(struct meson_drm *priv)
{
	struct meson_crtc *meson_crtc = to_meson_crtc(priv->crtc);
	unsigned long flags;

	/* Update the OSD registers */
	if (priv->viu.osd1_enabled && priv->viu.osd1_commit) {
		writel_relaxed(priv->viu.osd1_ctrl_stat,
				priv->io_base + _REG(VIU_OSD1_CTRL_STAT));
		writel_relaxed(priv->viu.osd1_blk0_cfg[0],
				priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W0));
		writel_relaxed(priv->viu.osd1_blk0_cfg[1],
				priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W1));
		writel_relaxed(priv->viu.osd1_blk0_cfg[2],
				priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W2));
		writel_relaxed(priv->viu.osd1_blk0_cfg[3],
				priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W3));
		writel_relaxed(priv->viu.osd1_blk0_cfg[4],
				priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W4));

		/* If output is interlace, make use of the Scaler */
		if (priv->viu.osd1_interlace) {
			struct drm_plane *plane = priv->primary_plane;
			struct drm_plane_state *state = plane->state;
			struct drm_rect dest = {
				.x1 = state->crtc_x,
				.y1 = state->crtc_y,
				.x2 = state->crtc_x + state->crtc_w,
				.y2 = state->crtc_y + state->crtc_h,
			};

			meson_vpp_setup_interlace_vscaler_osd1(priv, &dest);
		} else
			meson_vpp_disable_interlace_vscaler_osd1(priv);

		meson_canvas_setup(priv, MESON_CANVAS_ID_OSD1,
			   priv->viu.osd1_addr, priv->viu.osd1_stride,
			   priv->viu.osd1_height, MESON_CANVAS_WRAP_NONE,
			   MESON_CANVAS_BLKMODE_LINEAR);

		/* Enable OSD1 */
		writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND,
				    priv->io_base + _REG(VPP_MISC));

		priv->viu.osd1_commit = false;
	}

	drm_crtc_handle_vblank(priv->crtc);

	spin_lock_irqsave(&priv->drm->event_lock, flags);
	if (meson_crtc->event) {
		drm_crtc_send_vblank_event(priv->crtc, meson_crtc->event);
		drm_crtc_vblank_put(priv->crtc);
		meson_crtc->event = NULL;
	}
	spin_unlock_irqrestore(&priv->drm->event_lock, flags);
}

int meson_crtc_create(struct meson_drm *priv)
{
	struct meson_crtc *meson_crtc;
	struct drm_crtc *crtc;
	int ret;

	meson_crtc = devm_kzalloc(priv->drm->dev, sizeof(*meson_crtc),
				  GFP_KERNEL);
	if (!meson_crtc)
		return -ENOMEM;

	meson_crtc->priv = priv;
	crtc = &meson_crtc->base;
	ret = drm_crtc_init_with_planes(priv->drm, crtc,
					priv->primary_plane, NULL,
					&meson_crtc_funcs, "meson_crtc");
	if (ret) {
		dev_err(priv->drm->dev, "Failed to init CRTC\n");
		return ret;
	}

	drm_crtc_helper_add(crtc, &meson_crtc_helper_funcs);

	priv->crtc = crtc;

	return 0;
}
Commit	Line	Data
bbbe775e NA	1	/*
	2	* Copyright (C) 2016 BayLibre, SAS
	3	* Author: Neil Armstrong <narmstrong@baylibre.com>
	4	* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
	5	* Copyright (C) 2014 Endless Mobile
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 of the
	10	* License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	19	*
	20	* Written by:
	21	* Jasper St. Pierre <jstpierre@mecheye.net>
	22	*/
	23
	24	#include <linux/kernel.h>
	25	#include <linux/module.h>
	26	#include <linux/mutex.h>
	27	#include <linux/platform_device.h>
	28	#include <drm/drmP.h>
	29	#include <drm/drm_atomic.h>
	30	#include <drm/drm_atomic_helper.h>
	31	#include <drm/drm_flip_work.h>
	32	#include <drm/drm_crtc_helper.h>
	33
	34	#include "meson_crtc.h"
	35	#include "meson_plane.h"
65686873	36	#include "meson_venc.h"
bbbe775e NA	37	#include "meson_vpp.h"
bbbe775e NA	38	#include "meson_viu.h"
e88230a3	39	#include "meson_canvas.h"
bbbe775e NA	40	#include "meson_registers.h"
	41
	42	/* CRTC definition */
	43
	44	struct meson_crtc {
	45	struct drm_crtc base;
	46	struct drm_pending_vblank_event *event;
	47	struct meson_drm *priv;
	48	};
	49	#define to_meson_crtc(x) container_of(x, struct meson_crtc, base)
	50
	51	/* CRTC */
	52
65686873 SG	53	static int meson_crtc_enable_vblank(struct drm_crtc *crtc)
	54	{
	55	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	56	struct meson_drm *priv = meson_crtc->priv;
	57
	58	meson_venc_enable_vsync(priv);
	59
	60	return 0;
	61	}
	62
	63	static void meson_crtc_disable_vblank(struct drm_crtc *crtc)
	64	{
	65	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	66	struct meson_drm *priv = meson_crtc->priv;
	67
	68	meson_venc_disable_vsync(priv);
	69	}
	70
bbbe775e NA	71	static const struct drm_crtc_funcs meson_crtc_funcs = {
	72	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
	73	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
	74	.destroy = drm_crtc_cleanup,
	75	.page_flip = drm_atomic_helper_page_flip,
	76	.reset = drm_atomic_helper_crtc_reset,
	77	.set_config = drm_atomic_helper_set_config,
65686873 SG	78	.enable_vblank = meson_crtc_enable_vblank,
	79	.disable_vblank = meson_crtc_disable_vblank,
	80
bbbe775e NA	81	};
bbbe775e NA	82
0b20a0f8 LP	83	static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
0b20a0f8 LP	84	struct drm_crtc_state *old_state)
bbbe775e NA	85	{
bbbe775e NA	86	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
cc0c43a0	87	struct drm_crtc_state *crtc_state = crtc->state;
bbbe775e NA	88	struct meson_drm *priv = meson_crtc->priv;
bbbe775e NA	89
cc0c43a0 NA	90	DRM_DEBUG_DRIVER("\n");
	91
	92	if (!crtc_state) {
	93	DRM_ERROR("Invalid crtc_state\n");
	94	return;
	95	}
	96
bbbe775e	97	/* Enable VPP Postblend */
cc0c43a0	98	writel(crtc_state->mode.hdisplay,
bbbe775e NA	99	priv->io_base + _REG(VPP_POSTBLEND_H_SIZE));
	100
	101	writel_bits_relaxed(VPP_POSTBLEND_ENABLE, VPP_POSTBLEND_ENABLE,
	102	priv->io_base + _REG(VPP_MISC));
	103
	104	priv->viu.osd1_enabled = true;
	105	}
	106
64581714 LP	107	static void meson_crtc_atomic_disable(struct drm_crtc *crtc,
64581714 LP	108	struct drm_crtc_state *old_state)
bbbe775e NA	109	{
	110	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	111	struct meson_drm *priv = meson_crtc->priv;
	112
	113	priv->viu.osd1_enabled = false;
cc0c43a0	114	priv->viu.osd1_commit = false;
bbbe775e NA	115
	116	/* Disable VPP Postblend */
	117	writel_bits_relaxed(VPP_POSTBLEND_ENABLE, 0,
	118	priv->io_base + _REG(VPP_MISC));
	119
	120	if (crtc->state->event && !crtc->state->active) {
	121	spin_lock_irq(&crtc->dev->event_lock);
	122	drm_crtc_send_vblank_event(crtc, crtc->state->event);
	123	spin_unlock_irq(&crtc->dev->event_lock);
	124
	125	crtc->state->event = NULL;
	126	}
	127	}
	128
	129	static void meson_crtc_atomic_begin(struct drm_crtc *crtc,
	130	struct drm_crtc_state *state)
	131	{
	132	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	133	unsigned long flags;
	134
	135	if (crtc->state->event) {
	136	WARN_ON(drm_crtc_vblank_get(crtc) != 0);
	137
	138	spin_lock_irqsave(&crtc->dev->event_lock, flags);
	139	meson_crtc->event = crtc->state->event;
	140	spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
	141	crtc->state->event = NULL;
	142	}
	143	}
	144
	145	static void meson_crtc_atomic_flush(struct drm_crtc *crtc,
	146	struct drm_crtc_state *old_crtc_state)
	147	{
	148	struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
	149	struct meson_drm *priv = meson_crtc->priv;
	150
cc0c43a0	151	priv->viu.osd1_commit = true;
bbbe775e NA	152	}
	153
	154	static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = {
bbbe775e NA	155	.atomic_begin = meson_crtc_atomic_begin,
bbbe775e NA	156	.atomic_flush = meson_crtc_atomic_flush,
0b20a0f8	157	.atomic_enable = meson_crtc_atomic_enable,
64581714	158	.atomic_disable = meson_crtc_atomic_disable,
bbbe775e NA	159	};
	160
	161	void meson_crtc_irq(struct meson_drm *priv)
	162	{
	163	struct meson_crtc *meson_crtc = to_meson_crtc(priv->crtc);
	164	unsigned long flags;
	165
	166	/* Update the OSD registers */
	167	if (priv->viu.osd1_enabled && priv->viu.osd1_commit) {
	168	writel_relaxed(priv->viu.osd1_ctrl_stat,
	169	priv->io_base + _REG(VIU_OSD1_CTRL_STAT));
	170	writel_relaxed(priv->viu.osd1_blk0_cfg[0],
	171	priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W0));
	172	writel_relaxed(priv->viu.osd1_blk0_cfg[1],
	173	priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W1));
	174	writel_relaxed(priv->viu.osd1_blk0_cfg[2],
	175	priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W2));
	176	writel_relaxed(priv->viu.osd1_blk0_cfg[3],
	177	priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W3));
	178	writel_relaxed(priv->viu.osd1_blk0_cfg[4],
	179	priv->io_base + _REG(VIU_OSD1_BLK0_CFG_W4));
	180
	181	/* If output is interlace, make use of the Scaler */
	182	if (priv->viu.osd1_interlace) {
	183	struct drm_plane *plane = priv->primary_plane;
	184	struct drm_plane_state *state = plane->state;
	185	struct drm_rect dest = {
	186	.x1 = state->crtc_x,
	187	.y1 = state->crtc_y,
	188	.x2 = state->crtc_x + state->crtc_w,
	189	.y2 = state->crtc_y + state->crtc_h,
	190	};
	191
	192	meson_vpp_setup_interlace_vscaler_osd1(priv, &dest);
	193	} else
	194	meson_vpp_disable_interlace_vscaler_osd1(priv);
	195
e88230a3 NA	196	meson_canvas_setup(priv, MESON_CANVAS_ID_OSD1,
	197	priv->viu.osd1_addr, priv->viu.osd1_stride,
	198	priv->viu.osd1_height, MESON_CANVAS_WRAP_NONE,
	199	MESON_CANVAS_BLKMODE_LINEAR);
	200
bbbe775e NA	201	/* Enable OSD1 */
	202	writel_bits_relaxed(VPP_OSD1_POSTBLEND, VPP_OSD1_POSTBLEND,
	203	priv->io_base + _REG(VPP_MISC));
	204
	205	priv->viu.osd1_commit = false;
	206	}
	207
	208	drm_crtc_handle_vblank(priv->crtc);
	209
	210	spin_lock_irqsave(&priv->drm->event_lock, flags);
	211	if (meson_crtc->event) {
	212	drm_crtc_send_vblank_event(priv->crtc, meson_crtc->event);
	213	drm_crtc_vblank_put(priv->crtc);
	214	meson_crtc->event = NULL;
	215	}
	216	spin_unlock_irqrestore(&priv->drm->event_lock, flags);
	217	}
	218
	219	int meson_crtc_create(struct meson_drm *priv)
	220	{
	221	struct meson_crtc *meson_crtc;
	222	struct drm_crtc *crtc;
	223	int ret;
	224
	225	meson_crtc = devm_kzalloc(priv->drm->dev, sizeof(*meson_crtc),
	226	GFP_KERNEL);
	227	if (!meson_crtc)
	228	return -ENOMEM;
	229
	230	meson_crtc->priv = priv;
	231	crtc = &meson_crtc->base;
	232	ret = drm_crtc_init_with_planes(priv->drm, crtc,
	233	priv->primary_plane, NULL,
	234	&meson_crtc_funcs, "meson_crtc");
	235	if (ret) {
	236	dev_err(priv->drm->dev, "Failed to init CRTC\n");
	237	return ret;
	238	}
	239
	240	drm_crtc_helper_add(crtc, &meson_crtc_helper_funcs);
	241
	242	priv->crtc = crtc;
	243
	244	return 0;
	245	}