[deliverable/linux.git] / drivers / gpu / drm / sti / sti_drv.c

/*
 * Copyright (C) STMicroelectronics SA 2014
 * Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
 * License terms:  GNU General Public License (GPL), version 2
 */

#include <drm/drmP.h>

#include <linux/component.h>
#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_platform.h>

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

#include "sti_crtc.h"
#include "sti_drv.h"
#include "sti_plane.h"

#define DRIVER_NAME	"sti"
#define DRIVER_DESC	"STMicroelectronics SoC DRM"
#define DRIVER_DATE	"20140601"
#define DRIVER_MAJOR	1
#define DRIVER_MINOR	0

#define STI_MAX_FB_HEIGHT	4096
#define STI_MAX_FB_WIDTH	4096

static int sti_drm_fps_get(void *data, u64 *val)
{
	struct drm_device *drm_dev = data;
	struct drm_plane *p;
	unsigned int i = 0;

	*val = 0;
	list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
		struct sti_plane *plane = to_sti_plane(p);

		*val |= plane->fps_info.output << i;
		i++;
	}

	return 0;
}

static int sti_drm_fps_set(void *data, u64 val)
{
	struct drm_device *drm_dev = data;
	struct drm_plane *p;
	unsigned int i = 0;

	list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
		struct sti_plane *plane = to_sti_plane(p);

		plane->fps_info.output = (val >> i) & 1;
		i++;
	}

	return 0;
}

DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
			sti_drm_fps_get, sti_drm_fps_set, "%llu\n");

static int sti_drm_fps_dbg_show(struct seq_file *s, void *data)
{
	struct drm_info_node *node = s->private;
	struct drm_device *dev = node->minor->dev;
	struct drm_plane *p;
	int ret;

	ret = mutex_lock_interruptible(&dev->struct_mutex);
	if (ret)
		return ret;

	list_for_each_entry(p, &dev->mode_config.plane_list, head) {
		struct sti_plane *plane = to_sti_plane(p);

		seq_printf(s, "%s%s\n",
			   plane->fps_info.fps_str,
			   plane->fps_info.fips_str);
	}

	mutex_unlock(&dev->struct_mutex);
	return 0;
}

static struct drm_info_list sti_drm_dbg_list[] = {
	{"fps_get", sti_drm_fps_dbg_show, 0},
};

static int sti_drm_debugfs_create(struct dentry *root,
				  struct drm_minor *minor,
				  const char *name,
				  const struct file_operations *fops)
{
	struct drm_device *dev = minor->dev;
	struct drm_info_node *node;
	struct dentry *ent;

	ent = debugfs_create_file(name, S_IRUGO | S_IWUSR, root, dev, fops);
	if (IS_ERR(ent))
		return PTR_ERR(ent);

	node = kmalloc(sizeof(*node), GFP_KERNEL);
	if (!node) {
		debugfs_remove(ent);
		return -ENOMEM;
	}

	node->minor = minor;
	node->dent = ent;
	node->info_ent = (void *)fops;

	mutex_lock(&minor->debugfs_lock);
	list_add(&node->list, &minor->debugfs_list);
	mutex_unlock(&minor->debugfs_lock);

	return 0;
}

static int sti_drm_dbg_init(struct drm_minor *minor)
{
	int ret;

	ret = drm_debugfs_create_files(sti_drm_dbg_list,
				       ARRAY_SIZE(sti_drm_dbg_list),
				       minor->debugfs_root, minor);
	if (ret)
		goto err;

	ret = sti_drm_debugfs_create(minor->debugfs_root, minor, "fps_show",
				     &sti_drm_fps_fops);
	if (ret)
		goto err;

	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
	return 0;
err:
	DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
	return ret;
}

void sti_drm_dbg_cleanup(struct drm_minor *minor)
{
	drm_debugfs_remove_files(sti_drm_dbg_list,
				 ARRAY_SIZE(sti_drm_dbg_list), minor);

	drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
				 1, minor);
}

static void sti_atomic_schedule(struct sti_private *private,
				struct drm_atomic_state *state)
{
	private->commit.state = state;
	schedule_work(&private->commit.work);
}

static void sti_atomic_complete(struct sti_private *private,
				struct drm_atomic_state *state)
{
	struct drm_device *drm = private->drm_dev;

	/*
	 * Everything below can be run asynchronously without the need to grab
	 * any modeset locks at all under one condition: It must be guaranteed
	 * that the asynchronous work has either been cancelled (if the driver
	 * supports it, which at least requires that the framebuffers get
	 * cleaned up with drm_atomic_helper_cleanup_planes()) or completed
	 * before the new state gets committed on the software side with
	 * drm_atomic_helper_swap_state().
	 *
	 * This scheme allows new atomic state updates to be prepared and
	 * checked in parallel to the asynchronous completion of the previous
	 * update. Which is important since compositors need to figure out the
	 * composition of the next frame right after having submitted the
	 * current layout.
	 */

	drm_atomic_helper_commit_modeset_disables(drm, state);
	drm_atomic_helper_commit_planes(drm, state, false);
	drm_atomic_helper_commit_modeset_enables(drm, state);

	drm_atomic_helper_wait_for_vblanks(drm, state);

	drm_atomic_helper_cleanup_planes(drm, state);
	drm_atomic_state_free(state);
}

static void sti_atomic_work(struct work_struct *work)
{
	struct sti_private *private = container_of(work,
			struct sti_private, commit.work);

	sti_atomic_complete(private, private->commit.state);
}

static int sti_atomic_commit(struct drm_device *drm,
			     struct drm_atomic_state *state, bool nonblock)
{
	struct sti_private *private = drm->dev_private;
	int err;

	err = drm_atomic_helper_prepare_planes(drm, state);
	if (err)
		return err;

	/* serialize outstanding nonblocking commits */
	mutex_lock(&private->commit.lock);
	flush_work(&private->commit.work);

	/*
	 * This is the point of no return - everything below never fails except
	 * when the hw goes bonghits. Which means we can commit the new state on
	 * the software side now.
	 */

	drm_atomic_helper_swap_state(drm, state);

	if (nonblock)
		sti_atomic_schedule(private, state);
	else
		sti_atomic_complete(private, state);

	mutex_unlock(&private->commit.lock);
	return 0;
}

static const struct drm_mode_config_funcs sti_mode_config_funcs = {
	.fb_create = drm_fb_cma_create,
	.atomic_check = drm_atomic_helper_check,
	.atomic_commit = sti_atomic_commit,
};

static void sti_mode_config_init(struct drm_device *dev)
{
	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;

	/*
	 * set max width and height as default value.
	 * this value would be used to check framebuffer size limitation
	 * at drm_mode_addfb().
	 */
	dev->mode_config.max_width = STI_MAX_FB_WIDTH;
	dev->mode_config.max_height = STI_MAX_FB_HEIGHT;

	dev->mode_config.funcs = &sti_mode_config_funcs;
}

static int sti_load(struct drm_device *dev, unsigned long flags)
{
	struct sti_private *private;
	int ret;

	private = kzalloc(sizeof(*private), GFP_KERNEL);
	if (!private) {
		DRM_ERROR("Failed to allocate private\n");
		return -ENOMEM;
	}
	dev->dev_private = (void *)private;
	private->drm_dev = dev;

	mutex_init(&private->commit.lock);
	INIT_WORK(&private->commit.work, sti_atomic_work);

	drm_mode_config_init(dev);
	drm_kms_helper_poll_init(dev);

	sti_mode_config_init(dev);

	ret = component_bind_all(dev->dev, dev);
	if (ret) {
		drm_kms_helper_poll_fini(dev);
		drm_mode_config_cleanup(dev);
		kfree(private);
		return ret;
	}

	drm_mode_config_reset(dev);

	drm_helper_disable_unused_functions(dev);
	drm_fbdev_cma_init(dev, 32,
			   dev->mode_config.num_crtc,
			   dev->mode_config.num_connector);

	return 0;
}

static const struct file_operations sti_driver_fops = {
	.owner = THIS_MODULE,
	.open = drm_open,
	.mmap = drm_gem_cma_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 sti_driver = {
	.driver_features = DRIVER_HAVE_IRQ | DRIVER_MODESET |
	    DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
	.load = sti_load,
	.gem_free_object = drm_gem_cma_free_object,
	.gem_vm_ops = &drm_gem_cma_vm_ops,
	.dumb_create = drm_gem_cma_dumb_create,
	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
	.dumb_destroy = drm_gem_dumb_destroy,
	.fops = &sti_driver_fops,

	.get_vblank_counter = drm_vblank_no_hw_counter,
	.enable_vblank = sti_crtc_enable_vblank,
	.disable_vblank = sti_crtc_disable_vblank,

	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
	.gem_prime_export = drm_gem_prime_export,
	.gem_prime_import = drm_gem_prime_import,
	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	.gem_prime_vmap = drm_gem_cma_prime_vmap,
	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
	.gem_prime_mmap = drm_gem_cma_prime_mmap,

	.debugfs_init = sti_drm_dbg_init,
	.debugfs_cleanup = sti_drm_dbg_cleanup,

	.name = DRIVER_NAME,
	.desc = DRIVER_DESC,
	.date = DRIVER_DATE,
	.major = DRIVER_MAJOR,
	.minor = DRIVER_MINOR,
};

static int compare_of(struct device *dev, void *data)
{
	return dev->of_node == data;
}

static int sti_bind(struct device *dev)
{
	return drm_platform_init(&sti_driver, to_platform_device(dev));
}

static void sti_unbind(struct device *dev)
{
	drm_put_dev(dev_get_drvdata(dev));
}

static const struct component_master_ops sti_ops = {
	.bind = sti_bind,
	.unbind = sti_unbind,
};

static int sti_platform_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct device_node *node = dev->of_node;
	struct device_node *child_np;
	struct component_match *match = NULL;

	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));

	of_platform_populate(node, NULL, NULL, dev);

	child_np = of_get_next_available_child(node, NULL);

	while (child_np) {
		component_match_add(dev, &match, compare_of, child_np);
		of_node_put(child_np);
		child_np = of_get_next_available_child(node, child_np);
	}

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

static int sti_platform_remove(struct platform_device *pdev)
{
	component_master_del(&pdev->dev, &sti_ops);
	of_platform_depopulate(&pdev->dev);

	return 0;
}

static const struct of_device_id sti_dt_ids[] = {
	{ .compatible = "st,sti-display-subsystem", },
	{ /* end node */ },
};
MODULE_DEVICE_TABLE(of, sti_dt_ids);

static struct platform_driver sti_platform_driver = {
	.probe = sti_platform_probe,
	.remove = sti_platform_remove,
	.driver = {
		.name = DRIVER_NAME,
		.of_match_table = sti_dt_ids,
	},
};

static struct platform_driver * const drivers[] = {
	&sti_tvout_driver,
	&sti_vtac_driver,
	&sti_hqvdp_driver,
	&sti_hdmi_driver,
	&sti_hda_driver,
	&sti_dvo_driver,
	&sti_vtg_driver,
	&sti_compositor_driver,
	&sti_platform_driver,
};

static int sti_drm_init(void)
{
	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
}
module_init(sti_drm_init);

static void sti_drm_exit(void)
{
	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
}
module_exit(sti_drm_exit);

MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
9bbf86fe BG	1	/*
	2	* Copyright (C) STMicroelectronics SA 2014
	3	* Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
	4	* License terms: GNU General Public License (GPL), version 2
	5	*/
	6
	7	#include <drm/drmP.h>
	8
	9	#include <linux/component.h>
	10	#include <linux/debugfs.h>
	11	#include <linux/kernel.h>
	12	#include <linux/module.h>
	13	#include <linux/of_platform.h>
	14
de4b00b0 BG	15	#include <drm/drm_atomic.h>
de4b00b0 BG	16	#include <drm/drm_atomic_helper.h>
9bbf86fe BG	17	#include <drm/drm_crtc_helper.h>
	18	#include <drm/drm_gem_cma_helper.h>
	19	#include <drm/drm_fb_cma_helper.h>
	20
9e1f05b2 VA	21	#include "sti_crtc.h"
9e1f05b2 VA	22	#include "sti_drv.h"
bf8f9e4a	23	#include "sti_plane.h"
9bbf86fe BG	24
	25	#define DRIVER_NAME "sti"
	26	#define DRIVER_DESC "STMicroelectronics SoC DRM"
	27	#define DRIVER_DATE "20140601"
	28	#define DRIVER_MAJOR 1
	29	#define DRIVER_MINOR 0
	30
	31	#define STI_MAX_FB_HEIGHT 4096
	32	#define STI_MAX_FB_WIDTH 4096
	33
bf8f9e4a VA	34	static int sti_drm_fps_get(void data, u64 val)
	35	{
	36	struct drm_device *drm_dev = data;
	37	struct drm_plane *p;
	38	unsigned int i = 0;
	39
	40	*val = 0;
	41	list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
	42	struct sti_plane *plane = to_sti_plane(p);
	43
	44	*val \|= plane->fps_info.output << i;
	45	i++;
	46	}
	47
	48	return 0;
	49	}
	50
	51	static int sti_drm_fps_set(void *data, u64 val)
	52	{
	53	struct drm_device *drm_dev = data;
	54	struct drm_plane *p;
	55	unsigned int i = 0;
	56
	57	list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
	58	struct sti_plane *plane = to_sti_plane(p);
	59
	60	plane->fps_info.output = (val >> i) & 1;
	61	i++;
	62	}
	63
	64	return 0;
	65	}
	66
	67	DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
	68	sti_drm_fps_get, sti_drm_fps_set, "%llu\n");
	69
	70	static int sti_drm_fps_dbg_show(struct seq_file s, void data)
	71	{
	72	struct drm_info_node *node = s->private;
	73	struct drm_device *dev = node->minor->dev;
	74	struct drm_plane *p;
	75	int ret;
	76
	77	ret = mutex_lock_interruptible(&dev->struct_mutex);
	78	if (ret)
	79	return ret;
	80
	81	list_for_each_entry(p, &dev->mode_config.plane_list, head) {
	82	struct sti_plane *plane = to_sti_plane(p);
	83
	84	seq_printf(s, "%s%s\n",
	85	plane->fps_info.fps_str,
	86	plane->fps_info.fips_str);
	87	}
	88
	89	mutex_unlock(&dev->struct_mutex);
	90	return 0;
	91	}
	92
	93	static struct drm_info_list sti_drm_dbg_list[] = {
	94	{"fps_get", sti_drm_fps_dbg_show, 0},
	95	};
	96
	97	static int sti_drm_debugfs_create(struct dentry *root,
98	struct drm_minor *minor,
99	const char *name,
100	const struct file_operations *fops)
101	{
102	struct drm_device *dev = minor->dev;
103	struct drm_info_node *node;
104	struct dentry *ent;
105
106	ent = debugfs_create_file(name, S_IRUGO \| S_IWUSR, root, dev, fops);
107	if (IS_ERR(ent))
108	return PTR_ERR(ent);
109
110	node = kmalloc(sizeof(*node), GFP_KERNEL);
111	if (!node) {
112	debugfs_remove(ent);
113	return -ENOMEM;
114	}
115
116	node->minor = minor;
117	node->dent = ent;
118	node->info_ent = (void *)fops;
119
120	mutex_lock(&minor->debugfs_lock);
121	list_add(&node->list, &minor->debugfs_list);
122	mutex_unlock(&minor->debugfs_lock);
123
124	return 0;
125	}
126
127	static int sti_drm_dbg_init(struct drm_minor *minor)
128	{
129	int ret;
130
131	ret = drm_debugfs_create_files(sti_drm_dbg_list,
132	ARRAY_SIZE(sti_drm_dbg_list),
133	minor->debugfs_root, minor);
134	if (ret)
135	goto err;
136
137	ret = sti_drm_debugfs_create(minor->debugfs_root, minor, "fps_show",
138	&sti_drm_fps_fops);
139	if (ret)
140	goto err;
141
142	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
143	return 0;
144	err:
145	DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
146	return ret;
147	}
148
149	void sti_drm_dbg_cleanup(struct drm_minor *minor)
150	{
151	drm_debugfs_remove_files(sti_drm_dbg_list,
152	ARRAY_SIZE(sti_drm_dbg_list), minor);
153
154	drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
155	1, minor);
156	}
157
9e1f05b2 VA	158	static void sti_atomic_schedule(struct sti_private *private,
9e1f05b2 VA	159	struct drm_atomic_state *state)
de4b00b0 BG	160	{
	161	private->commit.state = state;
	162	schedule_work(&private->commit.work);
	163	}
	164
9e1f05b2 VA	165	static void sti_atomic_complete(struct sti_private *private,
9e1f05b2 VA	166	struct drm_atomic_state *state)
de4b00b0 BG	167	{
	168	struct drm_device *drm = private->drm_dev;
	169
	170	/*
	171	* Everything below can be run asynchronously without the need to grab
	172	* any modeset locks at all under one condition: It must be guaranteed
	173	* that the asynchronous work has either been cancelled (if the driver
	174	* supports it, which at least requires that the framebuffers get
	175	* cleaned up with drm_atomic_helper_cleanup_planes()) or completed
	176	* before the new state gets committed on the software side with
	177	* drm_atomic_helper_swap_state().
	178	*
	179	* This scheme allows new atomic state updates to be prepared and
	180	* checked in parallel to the asynchronous completion of the previous
	181	* update. Which is important since compositors need to figure out the
	182	* composition of the next frame right after having submitted the
	183	* current layout.
	184	*/
	185
	186	drm_atomic_helper_commit_modeset_disables(drm, state);
aef9dbb8	187	drm_atomic_helper_commit_planes(drm, state, false);
de4b00b0 BG	188	drm_atomic_helper_commit_modeset_enables(drm, state);
	189
	190	drm_atomic_helper_wait_for_vblanks(drm, state);
	191
	192	drm_atomic_helper_cleanup_planes(drm, state);
	193	drm_atomic_state_free(state);
	194	}
	195
9e1f05b2	196	static void sti_atomic_work(struct work_struct *work)
de4b00b0	197	{
9e1f05b2 VA	198	struct sti_private *private = container_of(work,
9e1f05b2 VA	199	struct sti_private, commit.work);
de4b00b0	200
9e1f05b2	201	sti_atomic_complete(private, private->commit.state);
de4b00b0 BG	202	}
de4b00b0 BG	203
9e1f05b2	204	static int sti_atomic_commit(struct drm_device *drm,
ab575184	205	struct drm_atomic_state *state, bool nonblock)
de4b00b0	206	{
9e1f05b2	207	struct sti_private *private = drm->dev_private;
de4b00b0 BG	208	int err;
	209
	210	err = drm_atomic_helper_prepare_planes(drm, state);
	211	if (err)
	212	return err;
	213
ab575184	214	/* serialize outstanding nonblocking commits */
de4b00b0 BG	215	mutex_lock(&private->commit.lock);
	216	flush_work(&private->commit.work);
	217
	218	/*
	219	* This is the point of no return - everything below never fails except
	220	* when the hw goes bonghits. Which means we can commit the new state on
	221	* the software side now.
	222	*/
	223
	224	drm_atomic_helper_swap_state(drm, state);
	225
ab575184	226	if (nonblock)
9e1f05b2	227	sti_atomic_schedule(private, state);
de4b00b0	228	else
9e1f05b2	229	sti_atomic_complete(private, state);
de4b00b0 BG	230
	231	mutex_unlock(&private->commit.lock);
	232	return 0;
	233	}
	234
c5de4853	235	static const struct drm_mode_config_funcs sti_mode_config_funcs = {
9bbf86fe	236	.fb_create = drm_fb_cma_create,
de4b00b0	237	.atomic_check = drm_atomic_helper_check,
9e1f05b2	238	.atomic_commit = sti_atomic_commit,
9bbf86fe BG	239	};
9bbf86fe BG	240
9e1f05b2	241	static void sti_mode_config_init(struct drm_device *dev)
9bbf86fe BG	242	{
	243	dev->mode_config.min_width = 0;
	244	dev->mode_config.min_height = 0;
	245
	246	/*
	247	* set max width and height as default value.
	248	* this value would be used to check framebuffer size limitation
	249	* at drm_mode_addfb().
	250	*/
738be9d6 VA	251	dev->mode_config.max_width = STI_MAX_FB_WIDTH;
738be9d6 VA	252	dev->mode_config.max_height = STI_MAX_FB_HEIGHT;
9bbf86fe	253
9e1f05b2	254	dev->mode_config.funcs = &sti_mode_config_funcs;
9bbf86fe BG	255	}
9bbf86fe BG	256
9e1f05b2	257	static int sti_load(struct drm_device *dev, unsigned long flags)
9bbf86fe	258	{
9e1f05b2	259	struct sti_private *private;
9bbf86fe BG	260	int ret;
9bbf86fe BG	261
9e1f05b2	262	private = kzalloc(sizeof(*private), GFP_KERNEL);
9bbf86fe BG	263	if (!private) {
	264	DRM_ERROR("Failed to allocate private\n");
	265	return -ENOMEM;
	266	}
	267	dev->dev_private = (void *)private;
	268	private->drm_dev = dev;
	269
de4b00b0	270	mutex_init(&private->commit.lock);
9e1f05b2	271	INIT_WORK(&private->commit.work, sti_atomic_work);
de4b00b0	272
9bbf86fe BG	273	drm_mode_config_init(dev);
	274	drm_kms_helper_poll_init(dev);
	275
9e1f05b2	276	sti_mode_config_init(dev);
9bbf86fe BG	277
9bbf86fe BG	278	ret = component_bind_all(dev->dev, dev);
f78e772a BG	279	if (ret) {
	280	drm_kms_helper_poll_fini(dev);
	281	drm_mode_config_cleanup(dev);
	282	kfree(private);
9bbf86fe	283	return ret;
f78e772a	284	}
9bbf86fe	285
de4b00b0	286	drm_mode_config_reset(dev);
9bbf86fe	287
4314e19e	288	drm_helper_disable_unused_functions(dev);
9bbf86fe	289	drm_fbdev_cma_init(dev, 32,
9e1f05b2 VA	290	dev->mode_config.num_crtc,
9e1f05b2 VA	291	dev->mode_config.num_connector);
b5d34a27	292
9bbf86fe BG	293	return 0;
	294	}
	295
9e1f05b2	296	static const struct file_operations sti_driver_fops = {
9bbf86fe BG	297	.owner = THIS_MODULE,
	298	.open = drm_open,
	299	.mmap = drm_gem_cma_mmap,
	300	.poll = drm_poll,
	301	.read = drm_read,
	302	.unlocked_ioctl = drm_ioctl,
	303	#ifdef CONFIG_COMPAT
	304	.compat_ioctl = drm_compat_ioctl,
	305	#endif
	306	.release = drm_release,
	307	};
	308
9e1f05b2	309	static struct drm_driver sti_driver = {
9bbf86fe	310	.driver_features = DRIVER_HAVE_IRQ \| DRIVER_MODESET \|
f29ddaf1	311	DRIVER_GEM \| DRIVER_PRIME \| DRIVER_ATOMIC,
9e1f05b2	312	.load = sti_load,
9bbf86fe BG	313	.gem_free_object = drm_gem_cma_free_object,
	314	.gem_vm_ops = &drm_gem_cma_vm_ops,
	315	.dumb_create = drm_gem_cma_dumb_create,
	316	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
	317	.dumb_destroy = drm_gem_dumb_destroy,
9e1f05b2	318	.fops = &sti_driver_fops,
9bbf86fe	319
b44f8408	320	.get_vblank_counter = drm_vblank_no_hw_counter,
9e1f05b2 VA	321	.enable_vblank = sti_crtc_enable_vblank,
9e1f05b2 VA	322	.disable_vblank = sti_crtc_disable_vblank,
9bbf86fe BG	323
	324	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	325	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
ffd157ce	326	.gem_prime_export = drm_gem_prime_export,
9bbf86fe BG	327	.gem_prime_import = drm_gem_prime_import,
	328	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
	329	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	330	.gem_prime_vmap = drm_gem_cma_prime_vmap,
	331	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
	332	.gem_prime_mmap = drm_gem_cma_prime_mmap,
	333
bf8f9e4a VA	334	.debugfs_init = sti_drm_dbg_init,
	335	.debugfs_cleanup = sti_drm_dbg_cleanup,
	336
9bbf86fe BG	337	.name = DRIVER_NAME,
	338	.desc = DRIVER_DESC,
	339	.date = DRIVER_DATE,
	340	.major = DRIVER_MAJOR,
	341	.minor = DRIVER_MINOR,
	342	};
	343
	344	static int compare_of(struct device dev, void data)
	345	{
	346	return dev->of_node == data;
	347	}
	348
9e1f05b2	349	static int sti_bind(struct device *dev)
9bbf86fe	350	{
9e1f05b2	351	return drm_platform_init(&sti_driver, to_platform_device(dev));
9bbf86fe BG	352	}
9bbf86fe BG	353
9e1f05b2	354	static void sti_unbind(struct device *dev)
9bbf86fe BG	355	{
	356	drm_put_dev(dev_get_drvdata(dev));
	357	}
	358
9e1f05b2 VA	359	static const struct component_master_ops sti_ops = {
	360	.bind = sti_bind,
	361	.unbind = sti_unbind,
9bbf86fe BG	362	};
9bbf86fe BG	363
9e1f05b2	364	static int sti_platform_probe(struct platform_device *pdev)
9bbf86fe BG	365	{
9bbf86fe BG	366	struct device *dev = &pdev->dev;
53bdcf5f	367	struct device_node *node = dev->of_node;
9bbf86fe BG	368	struct device_node *child_np;
	369	struct component_match *match = NULL;
	370
	371	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
	372
53bdcf5f BG	373	of_platform_populate(node, NULL, NULL, dev);
53bdcf5f BG	374
9bbf86fe BG	375	child_np = of_get_next_available_child(node, NULL);
	376
	377	while (child_np) {
	378	component_match_add(dev, &match, compare_of, child_np);
	379	of_node_put(child_np);
	380	child_np = of_get_next_available_child(node, child_np);
	381	}
	382
9e1f05b2	383	return component_master_add_with_match(dev, &sti_ops, match);
9bbf86fe BG	384	}
9bbf86fe BG	385
9e1f05b2	386	static int sti_platform_remove(struct platform_device *pdev)
9bbf86fe	387	{
9e1f05b2	388	component_master_del(&pdev->dev, &sti_ops);
9bbf86fe	389	of_platform_depopulate(&pdev->dev);
53bdcf5f	390
9bbf86fe BG	391	return 0;
	392	}
	393
9e1f05b2	394	static const struct of_device_id sti_dt_ids[] = {
9bbf86fe BG	395	{ .compatible = "st,sti-display-subsystem", },
	396	{ /* end node */ },
	397	};
9e1f05b2	398	MODULE_DEVICE_TABLE(of, sti_dt_ids);
9bbf86fe	399
9e1f05b2 VA	400	static struct platform_driver sti_platform_driver = {
	401	.probe = sti_platform_probe,
	402	.remove = sti_platform_remove,
9bbf86fe	403	.driver = {
9bbf86fe	404	.name = DRIVER_NAME,
9e1f05b2	405	.of_match_table = sti_dt_ids,
9bbf86fe BG	406	},
	407	};
	408
dcec16ef TR	409	static struct platform_driver * const drivers[] = {
	410	&sti_tvout_driver,
	411	&sti_vtac_driver,
	412	&sti_hqvdp_driver,
	413	&sti_hdmi_driver,
	414	&sti_hda_driver,
	415	&sti_dvo_driver,
	416	&sti_vtg_driver,
	417	&sti_compositor_driver,
	418	&sti_platform_driver,
	419	};
	420
	421	static int sti_drm_init(void)
	422	{
	423	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
	424	}
	425	module_init(sti_drm_init);
	426
	427	static void sti_drm_exit(void)
	428	{
	429	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
	430	}
	431	module_exit(sti_drm_exit);
9bbf86fe BG	432
	433	MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
	434	MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
	435	MODULE_LICENSE("GPL");