[deliverable/linux.git] / drivers / gpu / drm / rockchip / rockchip_drm_drv.c

/*
 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
 * Author:Mark Yao <mark.yao@rock-chips.com>
 *
 * based on exynos_drm_drv.c
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * 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 <asm/dma-iommu.h>

#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <linux/dma-mapping.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
#include <linux/of_graph.h>
#include <linux/component.h>
#include <linux/console.h>

#include "rockchip_drm_drv.h"
#include "rockchip_drm_fb.h"
#include "rockchip_drm_fbdev.h"
#include "rockchip_drm_gem.h"

#define DRIVER_NAME	"rockchip"
#define DRIVER_DESC	"RockChip Soc DRM"
#define DRIVER_DATE	"20140818"
#define DRIVER_MAJOR	1
#define DRIVER_MINOR	0

static bool is_support_iommu = true;
static struct drm_driver rockchip_drm_driver;

/*
 * Attach a (component) device to the shared drm dma mapping from master drm
 * device.  This is used by the VOPs to map GEM buffers to a common DMA
 * mapping.
 */
int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
				   struct device *dev)
{
	struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping;
	int ret;

	if (!is_support_iommu)
		return 0;

	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
	if (ret)
		return ret;

	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));

	return arm_iommu_attach_device(dev, mapping);
}

void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
				    struct device *dev)
{
	if (!is_support_iommu)
		return;

	arm_iommu_detach_device(dev);
}

int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
				 const struct rockchip_crtc_funcs *crtc_funcs)
{
	int pipe = drm_crtc_index(crtc);
	struct rockchip_drm_private *priv = crtc->dev->dev_private;

	if (pipe >= ROCKCHIP_MAX_CRTC)
		return -EINVAL;

	priv->crtc_funcs[pipe] = crtc_funcs;

	return 0;
}

void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc)
{
	int pipe = drm_crtc_index(crtc);
	struct rockchip_drm_private *priv = crtc->dev->dev_private;

	if (pipe >= ROCKCHIP_MAX_CRTC)
		return;

	priv->crtc_funcs[pipe] = NULL;
}

static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm,
						int pipe)
{
	struct drm_crtc *crtc;
	int i = 0;

	list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
		if (i++ == pipe)
			return crtc;

	return NULL;
}

static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev,
					   unsigned int pipe)
{
	struct rockchip_drm_private *priv = dev->dev_private;
	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);

	if (crtc && priv->crtc_funcs[pipe] &&
	    priv->crtc_funcs[pipe]->enable_vblank)
		return priv->crtc_funcs[pipe]->enable_vblank(crtc);

	return 0;
}

static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev,
					     unsigned int pipe)
{
	struct rockchip_drm_private *priv = dev->dev_private;
	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);

	if (crtc && priv->crtc_funcs[pipe] &&
	    priv->crtc_funcs[pipe]->enable_vblank)
		priv->crtc_funcs[pipe]->disable_vblank(crtc);
}

static int rockchip_drm_bind(struct device *dev)
{
	struct drm_device *drm_dev;
	struct rockchip_drm_private *private;
	struct dma_iommu_mapping *mapping = NULL;
	int ret;

	drm_dev = drm_dev_alloc(&rockchip_drm_driver, dev);
	if (!drm_dev)
		return -ENOMEM;

	dev_set_drvdata(dev, drm_dev);

	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
	if (!private) {
		ret = -ENOMEM;
		goto err_free;
	}

	drm_dev->dev_private = private;

	INIT_LIST_HEAD(&private->psr_list);
	spin_lock_init(&private->psr_list_lock);

	drm_mode_config_init(drm_dev);

	rockchip_drm_mode_config_init(drm_dev);

	dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
				      GFP_KERNEL);
	if (!dev->dma_parms) {
		ret = -ENOMEM;
		goto err_config_cleanup;
	}

	if (is_support_iommu) {
		/* TODO(djkurtz): fetch the mapping start/size from somewhere */
		mapping = arm_iommu_create_mapping(&platform_bus_type,
						   0x00000000,
						   SZ_2G);
		if (IS_ERR(mapping)) {
			ret = PTR_ERR(mapping);
			goto err_config_cleanup;
		}

		ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
		if (ret)
			goto err_release_mapping;

		dma_set_max_seg_size(dev, DMA_BIT_MASK(32));

		ret = arm_iommu_attach_device(dev, mapping);
		if (ret)
			goto err_release_mapping;
	}

	/* Try to bind all sub drivers. */
	ret = component_bind_all(dev, drm_dev);
	if (ret)
		goto err_detach_device;

	/* init kms poll for handling hpd */
	drm_kms_helper_poll_init(drm_dev);

	/*
	 * enable drm irq mode.
	 * - with irq_enabled = true, we can use the vblank feature.
	 */
	drm_dev->irq_enabled = true;

	ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
	if (ret)
		goto err_kms_helper_poll_fini;

	drm_mode_config_reset(drm_dev);

	ret = rockchip_drm_fbdev_init(drm_dev);
	if (ret)
		goto err_vblank_cleanup;

	ret = drm_dev_register(drm_dev, 0);
	if (ret)
		goto err_fbdev_fini;

	if (is_support_iommu)
		arm_iommu_release_mapping(mapping);
	return 0;
err_fbdev_fini:
	rockchip_drm_fbdev_fini(drm_dev);
err_vblank_cleanup:
	drm_vblank_cleanup(drm_dev);
err_kms_helper_poll_fini:
	drm_kms_helper_poll_fini(drm_dev);
	component_unbind_all(dev, drm_dev);
err_detach_device:
	if (is_support_iommu)
		arm_iommu_detach_device(dev);
err_release_mapping:
	if (is_support_iommu)
		arm_iommu_release_mapping(mapping);
err_config_cleanup:
	drm_mode_config_cleanup(drm_dev);
	drm_dev->dev_private = NULL;
err_free:
	drm_dev_unref(drm_dev);
	return ret;
}

static void rockchip_drm_unbind(struct device *dev)
{
	struct drm_device *drm_dev = dev_get_drvdata(dev);

	rockchip_drm_fbdev_fini(drm_dev);
	drm_vblank_cleanup(drm_dev);
	drm_kms_helper_poll_fini(drm_dev);
	component_unbind_all(dev, drm_dev);
	if (is_support_iommu)
		arm_iommu_detach_device(dev);
	drm_mode_config_cleanup(drm_dev);
	drm_dev->dev_private = NULL;
	drm_dev_unregister(drm_dev);
	drm_dev_unref(drm_dev);
	dev_set_drvdata(dev, NULL);
}

static void rockchip_drm_lastclose(struct drm_device *dev)
{
	struct rockchip_drm_private *priv = dev->dev_private;

	drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper);
}

static const struct file_operations rockchip_drm_driver_fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.mmap = rockchip_gem_mmap,
	.poll = drm_poll,
	.read = drm_read,
	.unlocked_ioctl = drm_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl = drm_compat_ioctl,
#endif
	.release = drm_release,
};

static struct drm_driver rockchip_drm_driver = {
	.driver_features	= DRIVER_MODESET | DRIVER_GEM |
				  DRIVER_PRIME | DRIVER_ATOMIC,
	.lastclose		= rockchip_drm_lastclose,
	.get_vblank_counter	= drm_vblank_no_hw_counter,
	.enable_vblank		= rockchip_drm_crtc_enable_vblank,
	.disable_vblank		= rockchip_drm_crtc_disable_vblank,
	.gem_vm_ops		= &drm_gem_cma_vm_ops,
	.gem_free_object_unlocked = rockchip_gem_free_object,
	.dumb_create		= rockchip_gem_dumb_create,
	.dumb_map_offset	= rockchip_gem_dumb_map_offset,
	.dumb_destroy		= drm_gem_dumb_destroy,
	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
	.gem_prime_import	= drm_gem_prime_import,
	.gem_prime_export	= drm_gem_prime_export,
	.gem_prime_get_sg_table	= rockchip_gem_prime_get_sg_table,
	.gem_prime_vmap		= rockchip_gem_prime_vmap,
	.gem_prime_vunmap	= rockchip_gem_prime_vunmap,
	.gem_prime_mmap		= rockchip_gem_mmap_buf,
	.fops			= &rockchip_drm_driver_fops,
	.name	= DRIVER_NAME,
	.desc	= DRIVER_DESC,
	.date	= DRIVER_DATE,
	.major	= DRIVER_MAJOR,
	.minor	= DRIVER_MINOR,
};

#ifdef CONFIG_PM_SLEEP
void rockchip_drm_fb_suspend(struct drm_device *drm)
{
	struct rockchip_drm_private *priv = drm->dev_private;

	console_lock();
	drm_fb_helper_set_suspend(&priv->fbdev_helper, 1);
	console_unlock();
}

void rockchip_drm_fb_resume(struct drm_device *drm)
{
	struct rockchip_drm_private *priv = drm->dev_private;

	console_lock();
	drm_fb_helper_set_suspend(&priv->fbdev_helper, 0);
	console_unlock();
}

static int rockchip_drm_sys_suspend(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);
	struct rockchip_drm_private *priv = drm->dev_private;

	drm_kms_helper_poll_disable(drm);
	rockchip_drm_fb_suspend(drm);

	priv->state = drm_atomic_helper_suspend(drm);
	if (IS_ERR(priv->state)) {
		rockchip_drm_fb_resume(drm);
		drm_kms_helper_poll_enable(drm);
		return PTR_ERR(priv->state);
	}

	return 0;
}

static int rockchip_drm_sys_resume(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);
	struct rockchip_drm_private *priv = drm->dev_private;

	drm_atomic_helper_resume(drm, priv->state);
	rockchip_drm_fb_resume(drm);
	drm_kms_helper_poll_enable(drm);

	return 0;
}
#endif

static const struct dev_pm_ops rockchip_drm_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
				rockchip_drm_sys_resume)
};

static int compare_of(struct device *dev, void *data)
{
	struct device_node *np = data;

	return dev->of_node == np;
}

static void rockchip_add_endpoints(struct device *dev,
				   struct component_match **match,
				   struct device_node *port)
{
	struct device_node *ep, *remote;

	for_each_child_of_node(port, ep) {
		remote = of_graph_get_remote_port_parent(ep);
		if (!remote || !of_device_is_available(remote)) {
			of_node_put(remote);
			continue;
		} else if (!of_device_is_available(remote->parent)) {
			dev_warn(dev, "parent device of %s is not available\n",
				 remote->full_name);
			of_node_put(remote);
			continue;
		}

		component_match_add(dev, match, compare_of, remote);
		of_node_put(remote);
	}
}

static const struct component_master_ops rockchip_drm_ops = {
	.bind = rockchip_drm_bind,
	.unbind = rockchip_drm_unbind,
};

static int rockchip_drm_platform_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct component_match *match = NULL;
	struct device_node *np = dev->of_node;
	struct device_node *port;
	int i;

	if (!np)
		return -ENODEV;
	/*
	 * Bind the crtc ports first, so that
	 * drm_of_find_possible_crtcs called from encoder .bind callbacks
	 * works as expected.
	 */
	for (i = 0;; i++) {
		struct device_node *iommu;

		port = of_parse_phandle(np, "ports", i);
		if (!port)
			break;

		if (!of_device_is_available(port->parent)) {
			of_node_put(port);
			continue;
		}

		iommu = of_parse_phandle(port->parent, "iommus", 0);
		if (!iommu || !of_device_is_available(iommu->parent)) {
			dev_dbg(dev, "no iommu attached for %s, using non-iommu buffers\n",
				port->parent->full_name);
			/*
			 * if there is a crtc not support iommu, force set all
			 * crtc use non-iommu buffer.
			 */
			is_support_iommu = false;
		}

		of_node_put(iommu);
		component_match_add(dev, &match, compare_of, port->parent);
		of_node_put(port);
	}

	if (i == 0) {
		dev_err(dev, "missing 'ports' property\n");
		return -ENODEV;
	}

	if (!match) {
		dev_err(dev, "No available vop found for display-subsystem.\n");
		return -ENODEV;
	}
	/*
	 * For each bound crtc, bind the encoders attached to its
	 * remote endpoint.
	 */
	for (i = 0;; i++) {
		port = of_parse_phandle(np, "ports", i);
		if (!port)
			break;

		if (!of_device_is_available(port->parent)) {
			of_node_put(port);
			continue;
		}

		rockchip_add_endpoints(dev, &match, port);
		of_node_put(port);
	}

	return component_master_add_with_match(dev, &rockchip_drm_ops, match);
}

static int rockchip_drm_platform_remove(struct platform_device *pdev)
{
	component_master_del(&pdev->dev, &rockchip_drm_ops);

	return 0;
}

static const struct of_device_id rockchip_drm_dt_ids[] = {
	{ .compatible = "rockchip,display-subsystem", },
	{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);

static struct platform_driver rockchip_drm_platform_driver = {
	.probe = rockchip_drm_platform_probe,
	.remove = rockchip_drm_platform_remove,
	.driver = {
		.name = "rockchip-drm",
		.of_match_table = rockchip_drm_dt_ids,
		.pm = &rockchip_drm_pm_ops,
	},
};

module_platform_driver(rockchip_drm_platform_driver);

MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
2048e328 MY	1	/*
	2	* Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
	3	* Author:Mark Yao <mark.yao@rock-chips.com>
	4	*
	5	* based on exynos_drm_drv.c
	6	*
	7	* This software is licensed under the terms of the GNU General Public
	8	* License version 2, as published by the Free Software Foundation, and
	9	* may be copied, distributed, and modified under those terms.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*/
	16
	17	#include <asm/dma-iommu.h>
	18
	19	#include <drm/drmP.h>
	20	#include <drm/drm_crtc_helper.h>
	21	#include <drm/drm_fb_helper.h>
80f67cd8	22	#include <drm/drm_gem_cma_helper.h>
2048e328 MY	23	#include <linux/dma-mapping.h>
2048e328 MY	24	#include <linux/pm_runtime.h>
00fe6148	25	#include <linux/module.h>
2048e328 MY	26	#include <linux/of_graph.h>
2048e328 MY	27	#include <linux/component.h>
5a587383	28	#include <linux/console.h>
2048e328 MY	29
	30	#include "rockchip_drm_drv.h"
	31	#include "rockchip_drm_fb.h"
	32	#include "rockchip_drm_fbdev.h"
	33	#include "rockchip_drm_gem.h"
	34
	35	#define DRIVER_NAME "rockchip"
	36	#define DRIVER_DESC "RockChip Soc DRM"
	37	#define DRIVER_DATE "20140818"
	38	#define DRIVER_MAJOR 1
	39	#define DRIVER_MINOR 0
	40
2d90d477	41	static bool is_support_iommu = true;
f706974a	42	static struct drm_driver rockchip_drm_driver;
2d90d477	43
2048e328 MY	44	/*
	45	* Attach a (component) device to the shared drm dma mapping from master drm
	46	* device. This is used by the VOPs to map GEM buffers to a common DMA
	47	* mapping.
	48	*/
	49	int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
	50	struct device *dev)
	51	{
	52	struct dma_iommu_mapping *mapping = drm_dev->dev->archdata.mapping;
	53	int ret;
	54
2d90d477 MY	55	if (!is_support_iommu)
	56	return 0;
	57
2048e328 MY	58	ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
	59	if (ret)
	60	return ret;
	61
	62	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
	63
	64	return arm_iommu_attach_device(dev, mapping);
	65	}
2048e328 MY	66
	67	void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
	68	struct device *dev)
	69	{
2d90d477 MY	70	if (!is_support_iommu)
	71	return;
	72
2048e328 MY	73	arm_iommu_detach_device(dev);
2048e328 MY	74	}
2048e328	75
b5f7b755 MY	76	int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
b5f7b755 MY	77	const struct rockchip_crtc_funcs *crtc_funcs)
2048e328	78	{
b5f7b755 MY	79	int pipe = drm_crtc_index(crtc);
b5f7b755 MY	80	struct rockchip_drm_private *priv = crtc->dev->dev_private;
2048e328	81
15da7808	82	if (pipe >= ROCKCHIP_MAX_CRTC)
2048e328 MY	83	return -EINVAL;
	84
	85	priv->crtc_funcs[pipe] = crtc_funcs;
	86
	87	return 0;
	88	}
2048e328	89
b5f7b755	90	void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc)
2048e328	91	{
b5f7b755 MY	92	int pipe = drm_crtc_index(crtc);
b5f7b755 MY	93	struct rockchip_drm_private *priv = crtc->dev->dev_private;
2048e328	94
15da7808	95	if (pipe >= ROCKCHIP_MAX_CRTC)
2048e328 MY	96	return;
	97
	98	priv->crtc_funcs[pipe] = NULL;
	99	}
2048e328 MY	100
	101	static struct drm_crtc rockchip_crtc_from_pipe(struct drm_device drm,
	102	int pipe)
	103	{
	104	struct drm_crtc *crtc;
	105	int i = 0;
	106
	107	list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
	108	if (i++ == pipe)
	109	return crtc;
	110
	111	return NULL;
	112	}
	113
88e72717 TR	114	static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev,
88e72717 TR	115	unsigned int pipe)
2048e328 MY	116	{
	117	struct rockchip_drm_private *priv = dev->dev_private;
	118	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
	119
	120	if (crtc && priv->crtc_funcs[pipe] &&
	121	priv->crtc_funcs[pipe]->enable_vblank)
	122	return priv->crtc_funcs[pipe]->enable_vblank(crtc);
	123
	124	return 0;
	125	}
	126
88e72717 TR	127	static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev,
88e72717 TR	128	unsigned int pipe)
2048e328 MY	129	{
	130	struct rockchip_drm_private *priv = dev->dev_private;
	131	struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
	132
	133	if (crtc && priv->crtc_funcs[pipe] &&
	134	priv->crtc_funcs[pipe]->enable_vblank)
	135	priv->crtc_funcs[pipe]->disable_vblank(crtc);
	136	}
	137
f706974a	138	static int rockchip_drm_bind(struct device *dev)
2048e328	139	{
f706974a	140	struct drm_device *drm_dev;
2048e328	141	struct rockchip_drm_private *private;
2d90d477	142	struct dma_iommu_mapping *mapping = NULL;
2048e328 MY	143	int ret;
2048e328 MY	144
f706974a TV	145	drm_dev = drm_dev_alloc(&rockchip_drm_driver, dev);
f706974a TV	146	if (!drm_dev)
2048e328 MY	147	return -ENOMEM;
2048e328 MY	148
f706974a TV	149	dev_set_drvdata(dev, drm_dev);
	150
	151	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
	152	if (!private) {
	153	ret = -ENOMEM;
9127f99c	154	goto err_free;
f706974a TV	155	}
f706974a TV	156
2048e328 MY	157	drm_dev->dev_private = private;
2048e328 MY	158
5182c1a5	159	INIT_LIST_HEAD(&private->psr_list);
18d8d4d2	160	spin_lock_init(&private->psr_list_lock);
5182c1a5	161
2048e328 MY	162	drm_mode_config_init(drm_dev);
	163
	164	rockchip_drm_mode_config_init(drm_dev);
	165
	166	dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
	167	GFP_KERNEL);
	168	if (!dev->dma_parms) {
	169	ret = -ENOMEM;
	170	goto err_config_cleanup;
	171	}
	172
2d90d477 MY	173	if (is_support_iommu) {
	174	/* TODO(djkurtz): fetch the mapping start/size from somewhere */
	175	mapping = arm_iommu_create_mapping(&platform_bus_type,
	176	0x00000000,
	177	SZ_2G);
	178	if (IS_ERR(mapping)) {
	179	ret = PTR_ERR(mapping);
	180	goto err_config_cleanup;
	181	}
2048e328	182
2d90d477 MY	183	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
	184	if (ret)
	185	goto err_release_mapping;
2048e328	186
2d90d477	187	dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
2048e328	188
2d90d477 MY	189	ret = arm_iommu_attach_device(dev, mapping);
	190	if (ret)
	191	goto err_release_mapping;
	192	}
2048e328 MY	193
	194	/* Try to bind all sub drivers. */
	195	ret = component_bind_all(dev, drm_dev);
	196	if (ret)
	197	goto err_detach_device;
	198
	199	/* init kms poll for handling hpd */
	200	drm_kms_helper_poll_init(drm_dev);
	201
	202	/*
	203	* enable drm irq mode.
	204	* - with irq_enabled = true, we can use the vblank feature.
	205	*/
	206	drm_dev->irq_enabled = true;
	207
	208	ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
	209	if (ret)
	210	goto err_kms_helper_poll_fini;
	211
63ebb9fa MY	212	drm_mode_config_reset(drm_dev);
63ebb9fa MY	213
2048e328 MY	214	ret = rockchip_drm_fbdev_init(drm_dev);
	215	if (ret)
	216	goto err_vblank_cleanup;
	217
9127f99c TF	218	ret = drm_dev_register(drm_dev, 0);
	219	if (ret)
	220	goto err_fbdev_fini;
	221
2d90d477 MY	222	if (is_support_iommu)
2d90d477 MY	223	arm_iommu_release_mapping(mapping);
2048e328	224	return 0;
9127f99c TF	225	err_fbdev_fini:
9127f99c TF	226	rockchip_drm_fbdev_fini(drm_dev);
2048e328 MY	227	err_vblank_cleanup:
	228	drm_vblank_cleanup(drm_dev);
	229	err_kms_helper_poll_fini:
	230	drm_kms_helper_poll_fini(drm_dev);
	231	component_unbind_all(dev, drm_dev);
	232	err_detach_device:
2d90d477 MY	233	if (is_support_iommu)
2d90d477 MY	234	arm_iommu_detach_device(dev);
2048e328	235	err_release_mapping:
2d90d477 MY	236	if (is_support_iommu)
2d90d477 MY	237	arm_iommu_release_mapping(mapping);
2048e328 MY	238	err_config_cleanup:
	239	drm_mode_config_cleanup(drm_dev);
	240	drm_dev->dev_private = NULL;
f706974a TV	241	err_free:
f706974a TV	242	drm_dev_unref(drm_dev);
2048e328 MY	243	return ret;
	244	}
	245
f706974a	246	static void rockchip_drm_unbind(struct device *dev)
2048e328	247	{
f706974a	248	struct drm_device *drm_dev = dev_get_drvdata(dev);
2048e328 MY	249
	250	rockchip_drm_fbdev_fini(drm_dev);
	251	drm_vblank_cleanup(drm_dev);
	252	drm_kms_helper_poll_fini(drm_dev);
	253	component_unbind_all(dev, drm_dev);
2d90d477 MY	254	if (is_support_iommu)
2d90d477 MY	255	arm_iommu_detach_device(dev);
2048e328 MY	256	drm_mode_config_cleanup(drm_dev);
2048e328 MY	257	drm_dev->dev_private = NULL;
f706974a TV	258	drm_dev_unregister(drm_dev);
	259	drm_dev_unref(drm_dev);
	260	dev_set_drvdata(dev, NULL);
2048e328 MY	261	}
2048e328 MY	262
8ff490ae	263	static void rockchip_drm_lastclose(struct drm_device *dev)
2048e328 MY	264	{
	265	struct rockchip_drm_private *priv = dev->dev_private;
	266
	267	drm_fb_helper_restore_fbdev_mode_unlocked(&priv->fbdev_helper);
	268	}
	269
	270	static const struct file_operations rockchip_drm_driver_fops = {
	271	.owner = THIS_MODULE,
	272	.open = drm_open,
	273	.mmap = rockchip_gem_mmap,
	274	.poll = drm_poll,
	275	.read = drm_read,
	276	.unlocked_ioctl = drm_ioctl,
	277	#ifdef CONFIG_COMPAT
	278	.compat_ioctl = drm_compat_ioctl,
	279	#endif
	280	.release = drm_release,
	281	};
	282
2048e328	283	static struct drm_driver rockchip_drm_driver = {
63ebb9fa MY	284	.driver_features = DRIVER_MODESET \| DRIVER_GEM \|
63ebb9fa MY	285	DRIVER_PRIME \| DRIVER_ATOMIC,
2048e328	286	.lastclose = rockchip_drm_lastclose,
b44f8408	287	.get_vblank_counter = drm_vblank_no_hw_counter,
2048e328 MY	288	.enable_vblank = rockchip_drm_crtc_enable_vblank,
2048e328 MY	289	.disable_vblank = rockchip_drm_crtc_disable_vblank,
80f67cd8	290	.gem_vm_ops = &drm_gem_cma_vm_ops,
c2466ac3	291	.gem_free_object_unlocked = rockchip_gem_free_object,
2048e328 MY	292	.dumb_create = rockchip_gem_dumb_create,
	293	.dumb_map_offset = rockchip_gem_dumb_map_offset,
	294	.dumb_destroy = drm_gem_dumb_destroy,
	295	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	296	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
	297	.gem_prime_import = drm_gem_prime_import,
	298	.gem_prime_export = drm_gem_prime_export,
	299	.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
	300	.gem_prime_vmap = rockchip_gem_prime_vmap,
	301	.gem_prime_vunmap = rockchip_gem_prime_vunmap,
	302	.gem_prime_mmap = rockchip_gem_mmap_buf,
	303	.fops = &rockchip_drm_driver_fops,
	304	.name = DRIVER_NAME,
	305	.desc = DRIVER_DESC,
	306	.date = DRIVER_DATE,
	307	.major = DRIVER_MAJOR,
	308	.minor = DRIVER_MINOR,
	309	};
	310
	311	#ifdef CONFIG_PM_SLEEP
5a587383	312	void rockchip_drm_fb_suspend(struct drm_device *drm)
2048e328	313	{
5a587383	314	struct rockchip_drm_private *priv = drm->dev_private;
2048e328	315
5a587383 TV	316	console_lock();
	317	drm_fb_helper_set_suspend(&priv->fbdev_helper, 1);
	318	console_unlock();
	319	}
2048e328	320
5a587383 TV	321	void rockchip_drm_fb_resume(struct drm_device *drm)
	322	{
	323	struct rockchip_drm_private *priv = drm->dev_private;
2048e328	324
5a587383 TV	325	console_lock();
	326	drm_fb_helper_set_suspend(&priv->fbdev_helper, 0);
	327	console_unlock();
	328	}
2048e328	329
5a587383 TV	330	static int rockchip_drm_sys_suspend(struct device *dev)
	331	{
	332	struct drm_device *drm = dev_get_drvdata(dev);
	333	struct rockchip_drm_private *priv = drm->dev_private;
	334
	335	drm_kms_helper_poll_disable(drm);
	336	rockchip_drm_fb_suspend(drm);
	337
	338	priv->state = drm_atomic_helper_suspend(drm);
	339	if (IS_ERR(priv->state)) {
	340	rockchip_drm_fb_resume(drm);
	341	drm_kms_helper_poll_enable(drm);
	342	return PTR_ERR(priv->state);
2048e328	343	}
2048e328 MY	344
	345	return 0;
	346	}
	347
	348	static int rockchip_drm_sys_resume(struct device *dev)
	349	{
	350	struct drm_device *drm = dev_get_drvdata(dev);
5a587383	351	struct rockchip_drm_private *priv = drm->dev_private;
2048e328	352
5a587383 TV	353	drm_atomic_helper_resume(drm, priv->state);
	354	rockchip_drm_fb_resume(drm);
	355	drm_kms_helper_poll_enable(drm);
2048e328 MY	356
	357	return 0;
	358	}
	359	#endif
	360
	361	static const struct dev_pm_ops rockchip_drm_pm_ops = {
	362	SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
	363	rockchip_drm_sys_resume)
	364	};
	365
2048e328 MY	366	static int compare_of(struct device dev, void data)
	367	{
	368	struct device_node *np = data;
	369
	370	return dev->of_node == np;
	371	}
	372
5bad7d29 MY	373	static void rockchip_add_endpoints(struct device *dev,
	374	struct component_match **match,
	375	struct device_node *port)
	376	{
	377	struct device_node ep, remote;
	378
	379	for_each_child_of_node(port, ep) {
	380	remote = of_graph_get_remote_port_parent(ep);
	381	if (!remote \|\| !of_device_is_available(remote)) {
	382	of_node_put(remote);
	383	continue;
	384	} else if (!of_device_is_available(remote->parent)) {
	385	dev_warn(dev, "parent device of %s is not available\n",
	386	remote->full_name);
	387	of_node_put(remote);
	388	continue;
	389	}
	390
	391	component_match_add(dev, match, compare_of, remote);
	392	of_node_put(remote);
	393	}
	394	}
	395
2048e328 MY	396	static const struct component_master_ops rockchip_drm_ops = {
	397	.bind = rockchip_drm_bind,
	398	.unbind = rockchip_drm_unbind,
	399	};
	400
	401	static int rockchip_drm_platform_probe(struct platform_device *pdev)
	402	{
5bad7d29 MY	403	struct device *dev = &pdev->dev;
	404	struct component_match *match = NULL;
	405	struct device_node *np = dev->of_node;
	406	struct device_node *port;
	407	int i;
2048e328	408
5bad7d29	409	if (!np)
2048e328	410	return -ENODEV;
5bad7d29 MY	411	/*
	412	* Bind the crtc ports first, so that
	413	* drm_of_find_possible_crtcs called from encoder .bind callbacks
	414	* works as expected.
	415	*/
	416	for (i = 0;; i++) {
2d90d477 MY	417	struct device_node *iommu;
2d90d477 MY	418
5bad7d29 MY	419	port = of_parse_phandle(np, "ports", i);
	420	if (!port)
	421	break;
	422
	423	if (!of_device_is_available(port->parent)) {
	424	of_node_put(port);
	425	continue;
	426	}
2048e328	427
2d90d477 MY	428	iommu = of_parse_phandle(port->parent, "iommus", 0);
	429	if (!iommu \|\| !of_device_is_available(iommu->parent)) {
	430	dev_dbg(dev, "no iommu attached for %s, using non-iommu buffers\n",
	431	port->parent->full_name);
	432	/*
	433	* if there is a crtc not support iommu, force set all
	434	* crtc use non-iommu buffer.
	435	*/
	436	is_support_iommu = false;
	437	}
	438
6d5fa28c	439	of_node_put(iommu);
5bad7d29 MY	440	component_match_add(dev, &match, compare_of, port->parent);
	441	of_node_put(port);
	442	}
	443
	444	if (i == 0) {
	445	dev_err(dev, "missing 'ports' property\n");
	446	return -ENODEV;
	447	}
	448
	449	if (!match) {
	450	dev_err(dev, "No available vop found for display-subsystem.\n");
	451	return -ENODEV;
	452	}
	453	/*
	454	* For each bound crtc, bind the encoders attached to its
	455	* remote endpoint.
	456	*/
	457	for (i = 0;; i++) {
	458	port = of_parse_phandle(np, "ports", i);
	459	if (!port)
	460	break;
	461
	462	if (!of_device_is_available(port->parent)) {
	463	of_node_put(port);
	464	continue;
	465	}
	466
	467	rockchip_add_endpoints(dev, &match, port);
	468	of_node_put(port);
	469	}
	470
	471	return component_master_add_with_match(dev, &rockchip_drm_ops, match);
2048e328 MY	472	}
	473
	474	static int rockchip_drm_platform_remove(struct platform_device *pdev)
	475	{
	476	component_master_del(&pdev->dev, &rockchip_drm_ops);
	477
	478	return 0;
	479	}
	480
	481	static const struct of_device_id rockchip_drm_dt_ids[] = {
	482	{ .compatible = "rockchip,display-subsystem", },
	483	{ /* sentinel */ },
	484	};
	485	MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
	486
	487	static struct platform_driver rockchip_drm_platform_driver = {
	488	.probe = rockchip_drm_platform_probe,
	489	.remove = rockchip_drm_platform_remove,
	490	.driver = {
2048e328 MY	491	.name = "rockchip-drm",
	492	.of_match_table = rockchip_drm_dt_ids,
	493	.pm = &rockchip_drm_pm_ops,
	494	},
	495	};
	496
	497	module_platform_driver(rockchip_drm_platform_driver);
	498
	499	MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
	500	MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
	501	MODULE_LICENSE("GPL v2");