[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;

	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);
	}

	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, 0);
	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(state, true);

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

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

static void sti_output_poll_changed(struct drm_device *ddev)
{
	struct sti_private *private = ddev->dev_private;

	if (!ddev->mode_config.num_connector)
		return;

	if (private->fbdev) {
		drm_fbdev_cma_hotplug_event(private->fbdev);
		return;
	}

	private->fbdev = drm_fbdev_cma_init(ddev, 32,
					    ddev->mode_config.num_crtc,
					    ddev->mode_config.num_connector);
	if (IS_ERR(private->fbdev))
		private->fbdev = NULL;
}

static const struct drm_mode_config_funcs sti_mode_config_funcs = {
	.fb_create = drm_fb_cma_create,
	.output_poll_changed = sti_output_poll_changed,
	.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 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_MODESET |
	    DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
	.gem_free_object_unlocked = 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_init(struct drm_device *ddev)
{
	struct sti_private *private;

	private = kzalloc(sizeof(*private), GFP_KERNEL);
	if (!private)
		return -ENOMEM;

	ddev->dev_private = (void *)private;
	dev_set_drvdata(ddev->dev, ddev);
	private->drm_dev = ddev;

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

	drm_mode_config_init(ddev);

	sti_mode_config_init(ddev);

	drm_kms_helper_poll_init(ddev);

	return 0;
}

static void sti_cleanup(struct drm_device *ddev)
{
	struct sti_private *private = ddev->dev_private;

	if (private->fbdev) {
		drm_fbdev_cma_fini(private->fbdev);
		private->fbdev = NULL;
	}

	drm_kms_helper_poll_fini(ddev);
	drm_vblank_cleanup(ddev);
	kfree(private);
	ddev->dev_private = NULL;
}

static int sti_bind(struct device *dev)
{
	struct drm_device *ddev;
	int ret;

	ddev = drm_dev_alloc(&sti_driver, dev);
	if (!ddev)
		return -ENOMEM;

	ddev->platformdev = to_platform_device(dev);

	ret = sti_init(ddev);
	if (ret)
		goto err_drm_dev_unref;

	ret = component_bind_all(ddev->dev, ddev);
	if (ret)
		goto err_cleanup;

	ret = drm_dev_register(ddev, 0);
	if (ret)
		goto err_register;

	drm_mode_config_reset(ddev);

	return 0;

err_register:
	drm_mode_config_cleanup(ddev);
err_cleanup:
	sti_cleanup(ddev);
err_drm_dev_unref:
	drm_dev_unref(ddev);
	return ret;
}

static void sti_unbind(struct device *dev)
{
	struct drm_device *ddev = dev_get_drvdata(dev);

	drm_dev_unregister(ddev);
	sti_cleanup(ddev);
	drm_dev_unref(ddev);
}

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;
bf8f9e4a VA	75
	76	list_for_each_entry(p, &dev->mode_config.plane_list, head) {
	77	struct sti_plane *plane = to_sti_plane(p);
	78
	79	seq_printf(s, "%s%s\n",
	80	plane->fps_info.fps_str,
	81	plane->fps_info.fips_str);
	82	}
	83
bf8f9e4a VA	84	return 0;
	85	}
	86
	87	static struct drm_info_list sti_drm_dbg_list[] = {
	88	{"fps_get", sti_drm_fps_dbg_show, 0},
	89	};
	90
	91	static int sti_drm_debugfs_create(struct dentry *root,
	92	struct drm_minor *minor,
	93	const char *name,
	94	const struct file_operations *fops)
	95	{
	96	struct drm_device *dev = minor->dev;
	97	struct drm_info_node *node;
	98	struct dentry *ent;
	99
	100	ent = debugfs_create_file(name, S_IRUGO \| S_IWUSR, root, dev, fops);
	101	if (IS_ERR(ent))
	102	return PTR_ERR(ent);
	103
	104	node = kmalloc(sizeof(*node), GFP_KERNEL);
	105	if (!node) {
	106	debugfs_remove(ent);
	107	return -ENOMEM;
	108	}
	109
	110	node->minor = minor;
	111	node->dent = ent;
	112	node->info_ent = (void *)fops;
	113
	114	mutex_lock(&minor->debugfs_lock);
	115	list_add(&node->list, &minor->debugfs_list);
	116	mutex_unlock(&minor->debugfs_lock);
	117
	118	return 0;
	119	}
	120
	121	static int sti_drm_dbg_init(struct drm_minor *minor)
	122	{
	123	int ret;
	124
	125	ret = drm_debugfs_create_files(sti_drm_dbg_list,
	126	ARRAY_SIZE(sti_drm_dbg_list),
	127	minor->debugfs_root, minor);
	128	if (ret)
	129	goto err;
	130
	131	ret = sti_drm_debugfs_create(minor->debugfs_root, minor, "fps_show",
	132	&sti_drm_fps_fops);
	133	if (ret)
	134	goto err;
	135
	136	DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
	137	return 0;
	138	err:
	139	DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
	140	return ret;
	141	}
	142
	143	void sti_drm_dbg_cleanup(struct drm_minor *minor)
	144	{
	145	drm_debugfs_remove_files(sti_drm_dbg_list,
	146	ARRAY_SIZE(sti_drm_dbg_list), minor);
	147
148	drm_debugfs_remove_files((struct drm_info_list *)&sti_drm_fps_fops,
149	1, minor);
150	}
151
9e1f05b2 VA	152	static void sti_atomic_schedule(struct sti_private *private,
9e1f05b2 VA	153	struct drm_atomic_state *state)
de4b00b0 BG	154	{
	155	private->commit.state = state;
	156	schedule_work(&private->commit.work);
	157	}
	158
9e1f05b2 VA	159	static void sti_atomic_complete(struct sti_private *private,
9e1f05b2 VA	160	struct drm_atomic_state *state)
de4b00b0 BG	161	{
	162	struct drm_device *drm = private->drm_dev;
	163
	164	/*
	165	* Everything below can be run asynchronously without the need to grab
	166	* any modeset locks at all under one condition: It must be guaranteed
	167	* that the asynchronous work has either been cancelled (if the driver
	168	* supports it, which at least requires that the framebuffers get
	169	* cleaned up with drm_atomic_helper_cleanup_planes()) or completed
	170	* before the new state gets committed on the software side with
	171	* drm_atomic_helper_swap_state().
	172	*
	173	* This scheme allows new atomic state updates to be prepared and
	174	* checked in parallel to the asynchronous completion of the previous
	175	* update. Which is important since compositors need to figure out the
	176	* composition of the next frame right after having submitted the
	177	* current layout.
	178	*/
	179
	180	drm_atomic_helper_commit_modeset_disables(drm, state);
2b58e98d	181	drm_atomic_helper_commit_planes(drm, state, 0);
de4b00b0 BG	182	drm_atomic_helper_commit_modeset_enables(drm, state);
	183
	184	drm_atomic_helper_wait_for_vblanks(drm, state);
	185
	186	drm_atomic_helper_cleanup_planes(drm, state);
	187	drm_atomic_state_free(state);
	188	}
	189
9e1f05b2	190	static void sti_atomic_work(struct work_struct *work)
de4b00b0	191	{
9e1f05b2 VA	192	struct sti_private *private = container_of(work,
9e1f05b2 VA	193	struct sti_private, commit.work);
de4b00b0	194
9e1f05b2	195	sti_atomic_complete(private, private->commit.state);
de4b00b0 BG	196	}
de4b00b0 BG	197
9e1f05b2	198	static int sti_atomic_commit(struct drm_device *drm,
ab575184	199	struct drm_atomic_state *state, bool nonblock)
de4b00b0	200	{
9e1f05b2	201	struct sti_private *private = drm->dev_private;
de4b00b0 BG	202	int err;
	203
	204	err = drm_atomic_helper_prepare_planes(drm, state);
	205	if (err)
	206	return err;
	207
ab575184	208	/* serialize outstanding nonblocking commits */
de4b00b0 BG	209	mutex_lock(&private->commit.lock);
	210	flush_work(&private->commit.work);
	211
	212	/*
	213	* This is the point of no return - everything below never fails except
	214	* when the hw goes bonghits. Which means we can commit the new state on
	215	* the software side now.
	216	*/
	217
5e84c269	218	drm_atomic_helper_swap_state(state, true);
de4b00b0	219
ab575184	220	if (nonblock)
9e1f05b2	221	sti_atomic_schedule(private, state);
de4b00b0	222	else
9e1f05b2	223	sti_atomic_complete(private, state);
de4b00b0 BG	224
	225	mutex_unlock(&private->commit.lock);
	226	return 0;
	227	}
	228
84601dbd BG	229	static void sti_output_poll_changed(struct drm_device *ddev)
	230	{
	231	struct sti_private *private = ddev->dev_private;
	232
	233	if (!ddev->mode_config.num_connector)
	234	return;
	235
	236	if (private->fbdev) {
	237	drm_fbdev_cma_hotplug_event(private->fbdev);
	238	return;
	239	}
	240
	241	private->fbdev = drm_fbdev_cma_init(ddev, 32,
	242	ddev->mode_config.num_crtc,
	243	ddev->mode_config.num_connector);
	244	if (IS_ERR(private->fbdev))
	245	private->fbdev = NULL;
	246	}
	247
c5de4853	248	static const struct drm_mode_config_funcs sti_mode_config_funcs = {
9bbf86fe	249	.fb_create = drm_fb_cma_create,
84601dbd	250	.output_poll_changed = sti_output_poll_changed,
de4b00b0	251	.atomic_check = drm_atomic_helper_check,
9e1f05b2	252	.atomic_commit = sti_atomic_commit,
9bbf86fe BG	253	};
9bbf86fe BG	254
9e1f05b2	255	static void sti_mode_config_init(struct drm_device *dev)
9bbf86fe BG	256	{
	257	dev->mode_config.min_width = 0;
	258	dev->mode_config.min_height = 0;
	259
	260	/*
	261	* set max width and height as default value.
	262	* this value would be used to check framebuffer size limitation
	263	* at drm_mode_addfb().
	264	*/
738be9d6 VA	265	dev->mode_config.max_width = STI_MAX_FB_WIDTH;
738be9d6 VA	266	dev->mode_config.max_height = STI_MAX_FB_HEIGHT;
9bbf86fe	267
9e1f05b2	268	dev->mode_config.funcs = &sti_mode_config_funcs;
9bbf86fe BG	269	}
9bbf86fe BG	270
9e1f05b2	271	static const struct file_operations sti_driver_fops = {
9bbf86fe BG	272	.owner = THIS_MODULE,
	273	.open = drm_open,
	274	.mmap = drm_gem_cma_mmap,
	275	.poll = drm_poll,
	276	.read = drm_read,
	277	.unlocked_ioctl = drm_ioctl,
	278	#ifdef CONFIG_COMPAT
	279	.compat_ioctl = drm_compat_ioctl,
	280	#endif
	281	.release = drm_release,
	282	};
	283
9e1f05b2	284	static struct drm_driver sti_driver = {
e1f96ef4	285	.driver_features = DRIVER_MODESET \|
f29ddaf1	286	DRIVER_GEM \| DRIVER_PRIME \| DRIVER_ATOMIC,
d41ec9ca	287	.gem_free_object_unlocked = drm_gem_cma_free_object,
9bbf86fe BG	288	.gem_vm_ops = &drm_gem_cma_vm_ops,
	289	.dumb_create = drm_gem_cma_dumb_create,
	290	.dumb_map_offset = drm_gem_cma_dumb_map_offset,
	291	.dumb_destroy = drm_gem_dumb_destroy,
9e1f05b2	292	.fops = &sti_driver_fops,
9bbf86fe	293
b44f8408	294	.get_vblank_counter = drm_vblank_no_hw_counter,
9e1f05b2 VA	295	.enable_vblank = sti_crtc_enable_vblank,
9e1f05b2 VA	296	.disable_vblank = sti_crtc_disable_vblank,
9bbf86fe BG	297
	298	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	299	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
ffd157ce	300	.gem_prime_export = drm_gem_prime_export,
9bbf86fe BG	301	.gem_prime_import = drm_gem_prime_import,
	302	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
	303	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
	304	.gem_prime_vmap = drm_gem_cma_prime_vmap,
	305	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
	306	.gem_prime_mmap = drm_gem_cma_prime_mmap,
	307
bf8f9e4a VA	308	.debugfs_init = sti_drm_dbg_init,
	309	.debugfs_cleanup = sti_drm_dbg_cleanup,
	310
9bbf86fe BG	311	.name = DRIVER_NAME,
	312	.desc = DRIVER_DESC,
	313	.date = DRIVER_DATE,
	314	.major = DRIVER_MAJOR,
	315	.minor = DRIVER_MINOR,
	316	};
	317
	318	static int compare_of(struct device dev, void data)
	319	{
	320	return dev->of_node == data;
	321	}
	322
84601dbd BG	323	static int sti_init(struct drm_device *ddev)
	324	{
	325	struct sti_private *private;
	326
	327	private = kzalloc(sizeof(*private), GFP_KERNEL);
	328	if (!private)
	329	return -ENOMEM;
	330
	331	ddev->dev_private = (void *)private;
	332	dev_set_drvdata(ddev->dev, ddev);
	333	private->drm_dev = ddev;
	334
	335	mutex_init(&private->commit.lock);
	336	INIT_WORK(&private->commit.work, sti_atomic_work);
	337
	338	drm_mode_config_init(ddev);
	339
	340	sti_mode_config_init(ddev);
	341
	342	drm_kms_helper_poll_init(ddev);
	343
	344	return 0;
	345	}
	346
	347	static void sti_cleanup(struct drm_device *ddev)
	348	{
	349	struct sti_private *private = ddev->dev_private;
	350
	351	if (private->fbdev) {
	352	drm_fbdev_cma_fini(private->fbdev);
	353	private->fbdev = NULL;
	354	}
	355
	356	drm_kms_helper_poll_fini(ddev);
	357	drm_vblank_cleanup(ddev);
	358	kfree(private);
	359	ddev->dev_private = NULL;
	360	}
	361
9e1f05b2	362	static int sti_bind(struct device *dev)
9bbf86fe	363	{
84601dbd BG	364	struct drm_device *ddev;
	365	int ret;
	366
	367	ddev = drm_dev_alloc(&sti_driver, dev);
	368	if (!ddev)
	369	return -ENOMEM;
	370
	371	ddev->platformdev = to_platform_device(dev);
	372
	373	ret = sti_init(ddev);
	374	if (ret)
	375	goto err_drm_dev_unref;
	376
	377	ret = component_bind_all(ddev->dev, ddev);
	378	if (ret)
	379	goto err_cleanup;
	380
	381	ret = drm_dev_register(ddev, 0);
	382	if (ret)
	383	goto err_register;
	384
	385	drm_mode_config_reset(ddev);
	386
	387	return 0;
	388
	389	err_register:
	390	drm_mode_config_cleanup(ddev);
	391	err_cleanup:
	392	sti_cleanup(ddev);
	393	err_drm_dev_unref:
	394	drm_dev_unref(ddev);
	395	return ret;
9bbf86fe BG	396	}
9bbf86fe BG	397
9e1f05b2	398	static void sti_unbind(struct device *dev)
9bbf86fe	399	{
84601dbd BG	400	struct drm_device *ddev = dev_get_drvdata(dev);
	401
	402	drm_dev_unregister(ddev);
	403	sti_cleanup(ddev);
	404	drm_dev_unref(ddev);
9bbf86fe BG	405	}
9bbf86fe BG	406
9e1f05b2 VA	407	static const struct component_master_ops sti_ops = {
	408	.bind = sti_bind,
	409	.unbind = sti_unbind,
9bbf86fe BG	410	};
9bbf86fe BG	411
9e1f05b2	412	static int sti_platform_probe(struct platform_device *pdev)
9bbf86fe BG	413	{
9bbf86fe BG	414	struct device *dev = &pdev->dev;
53bdcf5f	415	struct device_node *node = dev->of_node;
9bbf86fe BG	416	struct device_node *child_np;
	417	struct component_match *match = NULL;
	418
	419	dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
	420
53bdcf5f BG	421	of_platform_populate(node, NULL, NULL, dev);
53bdcf5f BG	422
9bbf86fe BG	423	child_np = of_get_next_available_child(node, NULL);
	424
	425	while (child_np) {
	426	component_match_add(dev, &match, compare_of, child_np);
	427	of_node_put(child_np);
	428	child_np = of_get_next_available_child(node, child_np);
	429	}
	430
9e1f05b2	431	return component_master_add_with_match(dev, &sti_ops, match);
9bbf86fe BG	432	}
9bbf86fe BG	433
9e1f05b2	434	static int sti_platform_remove(struct platform_device *pdev)
9bbf86fe	435	{
9e1f05b2	436	component_master_del(&pdev->dev, &sti_ops);
9bbf86fe	437	of_platform_depopulate(&pdev->dev);
53bdcf5f	438
9bbf86fe BG	439	return 0;
	440	}
	441
9e1f05b2	442	static const struct of_device_id sti_dt_ids[] = {
9bbf86fe BG	443	{ .compatible = "st,sti-display-subsystem", },
	444	{ /* end node */ },
	445	};
9e1f05b2	446	MODULE_DEVICE_TABLE(of, sti_dt_ids);
9bbf86fe	447
9e1f05b2 VA	448	static struct platform_driver sti_platform_driver = {
	449	.probe = sti_platform_probe,
	450	.remove = sti_platform_remove,
9bbf86fe	451	.driver = {
9bbf86fe	452	.name = DRIVER_NAME,
9e1f05b2	453	.of_match_table = sti_dt_ids,
9bbf86fe BG	454	},
	455	};
	456
dcec16ef TR	457	static struct platform_driver * const drivers[] = {
	458	&sti_tvout_driver,
	459	&sti_vtac_driver,
	460	&sti_hqvdp_driver,
	461	&sti_hdmi_driver,
	462	&sti_hda_driver,
	463	&sti_dvo_driver,
	464	&sti_vtg_driver,
	465	&sti_compositor_driver,
	466	&sti_platform_driver,
	467	};
	468
	469	static int sti_drm_init(void)
	470	{
	471	return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
	472	}
	473	module_init(sti_drm_init);
	474
	475	static void sti_drm_exit(void)
	476	{
	477	platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
	478	}
	479	module_exit(sti_drm_exit);
9bbf86fe BG	480
	481	MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
	482	MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
	483	MODULE_LICENSE("GPL");