[linux.git] / drivers / gpu / drm / drm_debugfs.c

/*
 * Created: Sun Dec 21 13:08:50 2008 by [email protected]
 *
 * Copyright 2008 Ben Gamari <[email protected]>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include <linux/debugfs.h>
#include <linux/export.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/uaccess.h>

#include <drm/drm_atomic.h>
#include <drm/drm_auth.h>
#include <drm/drm_client.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
#include <drm/drm_file.h>
#include <drm/drm_gem.h>

#include "drm_crtc_internal.h"
#include "drm_internal.h"

#if defined(CONFIG_DEBUG_FS)

/***************************************************
 * Initialization, etc.
 **************************************************/

static int drm_name_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_minor *minor = node->minor;
	struct drm_device *dev = minor->dev;
	struct drm_master *master;

	mutex_lock(&dev->master_mutex);
	master = dev->master;
	seq_printf(m, "%s", dev->driver->name);
	if (dev->dev)
		seq_printf(m, " dev=%s", dev_name(dev->dev));
	if (master && master->unique)
		seq_printf(m, " master=%s", master->unique);
	if (dev->unique)
		seq_printf(m, " unique=%s", dev->unique);
	seq_printf(m, "\n");
	mutex_unlock(&dev->master_mutex);

	return 0;
}

static int drm_clients_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;
	struct drm_file *priv;
	kuid_t uid;

	seq_printf(m,
		   "%20s %5s %3s master a %5s %10s\n",
		   "command",
		   "pid",
		   "dev",
		   "uid",
		   "magic");

	/* dev->filelist is sorted youngest first, but we want to present
	 * oldest first (i.e. kernel, servers, clients), so walk backwardss.
	 */
	mutex_lock(&dev->filelist_mutex);
	list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
		struct task_struct *task;
		bool is_current_master = drm_is_current_master(priv);

		rcu_read_lock(); /* locks pid_task()->comm */
		task = pid_task(priv->pid, PIDTYPE_PID);
		uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
		seq_printf(m, "%20s %5d %3d   %c    %c %5d %10u\n",
			   task ? task->comm : "<unknown>",
			   pid_vnr(priv->pid),
			   priv->minor->index,
			   is_current_master ? 'y' : 'n',
			   priv->authenticated ? 'y' : 'n',
			   from_kuid_munged(seq_user_ns(m), uid),
			   priv->magic);
		rcu_read_unlock();
	}
	mutex_unlock(&dev->filelist_mutex);
	return 0;
}

static int drm_gem_one_name_info(int id, void *ptr, void *data)
{
	struct drm_gem_object *obj = ptr;
	struct seq_file *m = data;

	seq_printf(m, "%6d %8zd %7d %8d\n",
		   obj->name, obj->size,
		   obj->handle_count,
		   kref_read(&obj->refcount));
	return 0;
}

static int drm_gem_name_info(struct seq_file *m, void *data)
{
	struct drm_info_node *node = (struct drm_info_node *) m->private;
	struct drm_device *dev = node->minor->dev;

	seq_printf(m, "  name     size handles refcount\n");

	mutex_lock(&dev->object_name_lock);
	idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
	mutex_unlock(&dev->object_name_lock);

	return 0;
}

static const struct drm_info_list drm_debugfs_list[] = {
	{"name", drm_name_info, 0},
	{"clients", drm_clients_info, 0},
	{"gem_names", drm_gem_name_info, DRIVER_GEM},
};
#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)


static int drm_debugfs_open(struct inode *inode, struct file *file)
{
	struct drm_info_node *node = inode->i_private;

	return single_open(file, node->info_ent->show, node);
}


static const struct file_operations drm_debugfs_fops = {
	.owner = THIS_MODULE,
	.open = drm_debugfs_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};


/**
 * drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
 * 			minor
 * @files: The array of files to create
 * @count: The number of files given
 * @root: DRI debugfs dir entry.
 * @minor: device minor number
 *
 * Create a given set of debugfs files represented by an array of
 * &struct drm_info_list in the given root directory. These files will be removed
 * automatically on drm_debugfs_cleanup().
 */
void drm_debugfs_create_files(const struct drm_info_list *files, int count,
			      struct dentry *root, struct drm_minor *minor)
{
	struct drm_device *dev = minor->dev;
	struct drm_info_node *tmp;
	int i;

	for (i = 0; i < count; i++) {
		u32 features = files[i].driver_features;

		if (features && !drm_core_check_all_features(dev, features))
			continue;

		tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
		if (tmp == NULL)
			continue;

		tmp->minor = minor;
		tmp->dent = debugfs_create_file(files[i].name,
						S_IFREG | S_IRUGO, root, tmp,
						&drm_debugfs_fops);
		tmp->info_ent = &files[i];

		mutex_lock(&minor->debugfs_lock);
		list_add(&tmp->list, &minor->debugfs_list);
		mutex_unlock(&minor->debugfs_lock);
	}
}
EXPORT_SYMBOL(drm_debugfs_create_files);

int drm_debugfs_init(struct drm_minor *minor, int minor_id,
		     struct dentry *root)
{
	struct drm_device *dev = minor->dev;
	char name[64];

	INIT_LIST_HEAD(&minor->debugfs_list);
	mutex_init(&minor->debugfs_lock);
	sprintf(name, "%d", minor_id);
	minor->debugfs_root = debugfs_create_dir(name, root);

	drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
				 minor->debugfs_root, minor);

	if (drm_drv_uses_atomic_modeset(dev)) {
		drm_atomic_debugfs_init(minor);
	}

	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
		drm_framebuffer_debugfs_init(minor);

		drm_client_debugfs_init(minor);
	}

	if (dev->driver->debugfs_init)
		dev->driver->debugfs_init(minor);

	return 0;
}


int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
			     struct drm_minor *minor)
{
	struct list_head *pos, *q;
	struct drm_info_node *tmp;
	int i;

	mutex_lock(&minor->debugfs_lock);
	for (i = 0; i < count; i++) {
		list_for_each_safe(pos, q, &minor->debugfs_list) {
			tmp = list_entry(pos, struct drm_info_node, list);
			if (tmp->info_ent == &files[i]) {
				debugfs_remove(tmp->dent);
				list_del(pos);
				kfree(tmp);
			}
		}
	}
	mutex_unlock(&minor->debugfs_lock);
	return 0;
}
EXPORT_SYMBOL(drm_debugfs_remove_files);

static void drm_debugfs_remove_all_files(struct drm_minor *minor)
{
	struct drm_info_node *node, *tmp;

	mutex_lock(&minor->debugfs_lock);
	list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
		debugfs_remove(node->dent);
		list_del(&node->list);
		kfree(node);
	}
	mutex_unlock(&minor->debugfs_lock);
}

void drm_debugfs_cleanup(struct drm_minor *minor)
{
	if (!minor->debugfs_root)
		return;

	drm_debugfs_remove_all_files(minor);

	debugfs_remove_recursive(minor->debugfs_root);
	minor->debugfs_root = NULL;
}

static int connector_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;

	seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));

	return 0;
}

static int connector_open(struct inode *inode, struct file *file)
{
	struct drm_connector *dev = inode->i_private;

	return single_open(file, connector_show, dev);
}

static ssize_t connector_write(struct file *file, const char __user *ubuf,
			       size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_connector *connector = m->private;
	char buf[12];

	if (len > sizeof(buf) - 1)
		return -EINVAL;

	if (copy_from_user(buf, ubuf, len))
		return -EFAULT;

	buf[len] = '\0';

	if (sysfs_streq(buf, "on"))
		connector->force = DRM_FORCE_ON;
	else if (sysfs_streq(buf, "digital"))
		connector->force = DRM_FORCE_ON_DIGITAL;
	else if (sysfs_streq(buf, "off"))
		connector->force = DRM_FORCE_OFF;
	else if (sysfs_streq(buf, "unspecified"))
		connector->force = DRM_FORCE_UNSPECIFIED;
	else
		return -EINVAL;

	return len;
}

static int edid_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;
	struct drm_property_blob *edid = connector->edid_blob_ptr;

	if (connector->override_edid && edid)
		seq_write(m, edid->data, edid->length);

	return 0;
}

static int edid_open(struct inode *inode, struct file *file)
{
	struct drm_connector *dev = inode->i_private;

	return single_open(file, edid_show, dev);
}

static ssize_t edid_write(struct file *file, const char __user *ubuf,
			  size_t len, loff_t *offp)
{
	struct seq_file *m = file->private_data;
	struct drm_connector *connector = m->private;
	char *buf;
	int ret;

	buf = memdup_user(ubuf, len);
	if (IS_ERR(buf))
		return PTR_ERR(buf);

	if (len == 5 && !strncmp(buf, "reset", 5))
		ret = drm_edid_override_reset(connector);
	else
		ret = drm_edid_override_set(connector, buf, len);

	kfree(buf);

	return ret ? ret : len;
}

/*
 * Returns the min and max vrr vfreq through the connector's debugfs file.
 * Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
 */
static int vrr_range_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;

	if (connector->status != connector_status_connected)
		return -ENODEV;

	seq_printf(m, "Min: %u\n", (u8)connector->display_info.monitor_range.min_vfreq);
	seq_printf(m, "Max: %u\n", (u8)connector->display_info.monitor_range.max_vfreq);

	return 0;
}
DEFINE_SHOW_ATTRIBUTE(vrr_range);

/*
 * Returns Connector's max supported bpc through debugfs file.
 * Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc
 */
static int output_bpc_show(struct seq_file *m, void *data)
{
	struct drm_connector *connector = m->private;

	if (connector->status != connector_status_connected)
		return -ENODEV;

	seq_printf(m, "Maximum: %u\n", connector->display_info.bpc);

	return 0;
}
DEFINE_SHOW_ATTRIBUTE(output_bpc);

static const struct file_operations drm_edid_fops = {
	.owner = THIS_MODULE,
	.open = edid_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
	.write = edid_write
};


static const struct file_operations drm_connector_fops = {
	.owner = THIS_MODULE,
	.open = connector_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
	.write = connector_write
};

void drm_debugfs_connector_add(struct drm_connector *connector)
{
	struct drm_minor *minor = connector->dev->primary;
	struct dentry *root;

	if (!minor->debugfs_root)
		return;

	root = debugfs_create_dir(connector->name, minor->debugfs_root);
	connector->debugfs_entry = root;

	/* force */
	debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector,
			    &drm_connector_fops);

	/* edid */
	debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root, connector,
			    &drm_edid_fops);

	/* vrr range */
	debugfs_create_file("vrr_range", S_IRUGO, root, connector,
			    &vrr_range_fops);

	/* max bpc */
	debugfs_create_file("output_bpc", 0444, root, connector,
			    &output_bpc_fops);

	if (connector->funcs->debugfs_init)
		connector->funcs->debugfs_init(connector, root);
}

void drm_debugfs_connector_remove(struct drm_connector *connector)
{
	if (!connector->debugfs_entry)
		return;

	debugfs_remove_recursive(connector->debugfs_entry);

	connector->debugfs_entry = NULL;
}

void drm_debugfs_crtc_add(struct drm_crtc *crtc)
{
	struct drm_minor *minor = crtc->dev->primary;
	struct dentry *root;
	char *name;

	name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
	if (!name)
		return;

	root = debugfs_create_dir(name, minor->debugfs_root);
	kfree(name);

	crtc->debugfs_entry = root;

	drm_debugfs_crtc_crc_add(crtc);
}

void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
{
	debugfs_remove_recursive(crtc->debugfs_entry);
	crtc->debugfs_entry = NULL;
}

#endif /* CONFIG_DEBUG_FS */
Commit	Line	Data
28a62277 BG	1	/*
	2	* Created: Sun Dec 21 13:08:50 2008 by [email protected]
	3	*
	4	* Copyright 2008 Ben Gamari <[email protected]>
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a
	7	* copy of this software and associated documentation files (the "Software"),
	8	* to deal in the Software without restriction, including without limitation
	9	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	10	* and/or sell copies of the Software, and to permit persons to whom the
	11	* Software is furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the next
	14	* paragraph) shall be included in all copies or substantial portions of the
	15	* Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	18	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	19	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	20	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	21	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	22	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	23	* OTHER DEALINGS IN THE SOFTWARE.
	24	*/
	25
	26	#include <linux/debugfs.h>
0500c04e	27	#include <linux/export.h>
28a62277	28	#include <linux/seq_file.h>
5a0e3ad6	29	#include <linux/slab.h>
0500c04e	30	#include <linux/uaccess.h>
4834442d	31
0500c04e SR	32	#include <drm/drm_atomic.h>
0500c04e SR	33	#include <drm/drm_auth.h>
e896c132	34	#include <drm/drm_client.h>
4834442d	35	#include <drm/drm_debugfs.h>
0500c04e SR	36	#include <drm/drm_device.h>
0500c04e SR	37	#include <drm/drm_drv.h>
4cf2b281	38	#include <drm/drm_edid.h>
0500c04e	39	#include <drm/drm_file.h>
c6fdea6e	40	#include <drm/drm_gem.h>
4834442d	41
5bc9cb4d	42	#include "drm_crtc_internal.h"
0500c04e	43	#include "drm_internal.h"
28a62277 BG	44
	45	#if defined(CONFIG_DEBUG_FS)
	46
	47	/***************************************************
	48	* Initialization, etc.
	49	**************************************************/
	50
c6fdea6e SV	51	static int drm_name_info(struct seq_file m, void data)
	52	{
	53	struct drm_info_node node = (struct drm_info_node ) m->private;
	54	struct drm_minor *minor = node->minor;
	55	struct drm_device *dev = minor->dev;
	56	struct drm_master *master;
	57
	58	mutex_lock(&dev->master_mutex);
	59	master = dev->master;
	60	seq_printf(m, "%s", dev->driver->name);
	61	if (dev->dev)
	62	seq_printf(m, " dev=%s", dev_name(dev->dev));
	63	if (master && master->unique)
	64	seq_printf(m, " master=%s", master->unique);
	65	if (dev->unique)
	66	seq_printf(m, " unique=%s", dev->unique);
	67	seq_printf(m, "\n");
	68	mutex_unlock(&dev->master_mutex);
	69
	70	return 0;
	71	}
	72
	73	static int drm_clients_info(struct seq_file m, void data)
	74	{
	75	struct drm_info_node node = (struct drm_info_node ) m->private;
	76	struct drm_device *dev = node->minor->dev;
	77	struct drm_file *priv;
	78	kuid_t uid;
	79
	80	seq_printf(m,
	81	"%20s %5s %3s master a %5s %10s\n",
	82	"command",
	83	"pid",
	84	"dev",
	85	"uid",
	86	"magic");
	87
	88	/* dev->filelist is sorted youngest first, but we want to present
	89	* oldest first (i.e. kernel, servers, clients), so walk backwardss.
	90	*/
	91	mutex_lock(&dev->filelist_mutex);
	92	list_for_each_entry_reverse(priv, &dev->filelist, lhead) {
	93	struct task_struct *task;
5eff9585	94	bool is_current_master = drm_is_current_master(priv);
c6fdea6e SV	95
	96	rcu_read_lock(); /* locks pid_task()->comm */
	97	task = pid_task(priv->pid, PIDTYPE_PID);
	98	uid = task ? __task_cred(task)->euid : GLOBAL_ROOT_UID;
	99	seq_printf(m, "%20s %5d %3d %c %c %5d %10u\n",
	100	task ? task->comm : "<unknown>",
	101	pid_vnr(priv->pid),
	102	priv->minor->index,
5eff9585	103	is_current_master ? 'y' : 'n',
c6fdea6e SV	104	priv->authenticated ? 'y' : 'n',
	105	from_kuid_munged(seq_user_ns(m), uid),
	106	priv->magic);
	107	rcu_read_unlock();
	108	}
	109	mutex_unlock(&dev->filelist_mutex);
	110	return 0;
	111	}
	112
	113	static int drm_gem_one_name_info(int id, void ptr, void data)
	114	{
	115	struct drm_gem_object *obj = ptr;
	116	struct seq_file *m = data;
	117
	118	seq_printf(m, "%6d %8zd %7d %8d\n",
	119	obj->name, obj->size,
	120	obj->handle_count,
	121	kref_read(&obj->refcount));
	122	return 0;
	123	}
	124
	125	static int drm_gem_name_info(struct seq_file m, void data)
	126	{
	127	struct drm_info_node node = (struct drm_info_node ) m->private;
	128	struct drm_device *dev = node->minor->dev;
	129
	130	seq_printf(m, " name size handles refcount\n");
	131
	132	mutex_lock(&dev->object_name_lock);
	133	idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
	134	mutex_unlock(&dev->object_name_lock);
	135
	136	return 0;
	137	}
	138
36f73b2f	139	static const struct drm_info_list drm_debugfs_list[] = {
28a62277	140	{"name", drm_name_info, 0},
28a62277	141	{"clients", drm_clients_info, 0},
28a62277	142	{"gem_names", drm_gem_name_info, DRIVER_GEM},
28a62277 BG	143	};
	144	#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)
	145
	146
	147	static int drm_debugfs_open(struct inode inode, struct file file)
	148	{
	149	struct drm_info_node *node = inode->i_private;
	150
	151	return single_open(file, node->info_ent->show, node);
	152	}
	153
	154
	155	static const struct file_operations drm_debugfs_fops = {
	156	.owner = THIS_MODULE,
	157	.open = drm_debugfs_open,
	158	.read = seq_read,
	159	.llseek = seq_lseek,
	160	.release = single_release,
	161	};
	162
	163
	164	/**
0cad7f71 SV	165	* drm_debugfs_create_files - Initialize a given set of debugfs files for DRM
	166	* minor
	167	* @files: The array of files to create
	168	* @count: The number of files given
	169	* @root: DRI debugfs dir entry.
	170	* @minor: device minor number
28a62277 BG	171	*
28a62277 BG	172	* Create a given set of debugfs files represented by an array of
0cad7f71	173	* &struct drm_info_list in the given root directory. These files will be removed
086f2e5c	174	* automatically on drm_debugfs_cleanup().
28a62277	175	*/
a212d6a5 WK	176	void drm_debugfs_create_files(const struct drm_info_list *files, int count,
a212d6a5 WK	177	struct dentry root, struct drm_minor minor)
28a62277 BG	178	{
28a62277 BG	179	struct drm_device *dev = minor->dev;
28a62277	180	struct drm_info_node *tmp;
987d65d0	181	int i;
28a62277 BG	182
	183	for (i = 0; i < count; i++) {
	184	u32 features = files[i].driver_features;
	185
23d498f6	186	if (features && !drm_core_check_all_features(dev, features))
28a62277 BG	187	continue;
28a62277 BG	188
9a298b2a	189	tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
987d65d0 GKH	190	if (tmp == NULL)
987d65d0 GKH	191	continue;
28a62277 BG	192
28a62277 BG	193	tmp->minor = minor;
987d65d0 GKH	194	tmp->dent = debugfs_create_file(files[i].name,
	195	S_IFREG \| S_IRUGO, root, tmp,
	196	&drm_debugfs_fops);
28a62277	197	tmp->info_ent = &files[i];
b3e067c0 MS	198
	199	mutex_lock(&minor->debugfs_lock);
	200	list_add(&tmp->list, &minor->debugfs_list);
	201	mutex_unlock(&minor->debugfs_lock);
28a62277	202	}
28a62277 BG	203	}
	204	EXPORT_SYMBOL(drm_debugfs_create_files);
	205
28a62277 BG	206	int drm_debugfs_init(struct drm_minor *minor, int minor_id,
	207	struct dentry *root)
	208	{
	209	struct drm_device *dev = minor->dev;
	210	char name[64];
28a62277	211
b3e067c0 MS	212	INIT_LIST_HEAD(&minor->debugfs_list);
b3e067c0 MS	213	mutex_init(&minor->debugfs_lock);
28a62277 BG	214	sprintf(name, "%d", minor_id);
28a62277 BG	215	minor->debugfs_root = debugfs_create_dir(name, root);
28a62277	216
a212d6a5 WK	217	drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
a212d6a5 WK	218	minor->debugfs_root, minor);
28a62277	219
3c499ea0	220	if (drm_drv_uses_atomic_modeset(dev)) {
a212d6a5	221	drm_atomic_debugfs_init(minor);
6559c901 RC	222	}
6559c901 RC	223
0c51ef86	224	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
a212d6a5 WK	225	drm_framebuffer_debugfs_init(minor);
	226
	227	drm_client_debugfs_init(minor);
45d58b40 NT	228	}
45d58b40 NT	229
7ce84471 WK	230	if (dev->driver->debugfs_init)
	231	dev->driver->debugfs_init(minor);
	232
28a62277 BG	233	return 0;
	234	}
	235
	236
7d74795b	237	int drm_debugfs_remove_files(const struct drm_info_list *files, int count,
28a62277 BG	238	struct drm_minor *minor)
	239	{
	240	struct list_head pos, q;
	241	struct drm_info_node *tmp;
	242	int i;
	243
b3e067c0	244	mutex_lock(&minor->debugfs_lock);
28a62277	245	for (i = 0; i < count; i++) {
b3e067c0	246	list_for_each_safe(pos, q, &minor->debugfs_list) {
28a62277 BG	247	tmp = list_entry(pos, struct drm_info_node, list);
	248	if (tmp->info_ent == &files[i]) {
	249	debugfs_remove(tmp->dent);
	250	list_del(pos);
9a298b2a	251	kfree(tmp);
28a62277 BG	252	}
	253	}
	254	}
b3e067c0	255	mutex_unlock(&minor->debugfs_lock);
28a62277 BG	256	return 0;
	257	}
	258	EXPORT_SYMBOL(drm_debugfs_remove_files);
	259
086f2e5c NT	260	static void drm_debugfs_remove_all_files(struct drm_minor *minor)
	261	{
	262	struct drm_info_node node, tmp;
	263
	264	mutex_lock(&minor->debugfs_lock);
	265	list_for_each_entry_safe(node, tmp, &minor->debugfs_list, list) {
	266	debugfs_remove(node->dent);
	267	list_del(&node->list);
	268	kfree(node);
	269	}
	270	mutex_unlock(&minor->debugfs_lock);
	271	}
	272
b792e640	273	void drm_debugfs_cleanup(struct drm_minor *minor)
28a62277	274	{
28a62277	275	if (!minor->debugfs_root)
b792e640	276	return;
28a62277	277
086f2e5c	278	drm_debugfs_remove_all_files(minor);
28a62277	279
086f2e5c	280	debugfs_remove_recursive(minor->debugfs_root);
28a62277	281	minor->debugfs_root = NULL;
28a62277 BG	282	}
28a62277 BG	283
30f65707 TW	284	static int connector_show(struct seq_file m, void data)
	285	{
	286	struct drm_connector *connector = m->private;
30f65707	287
6140cf20	288	seq_printf(m, "%s\n", drm_get_connector_force_name(connector->force));
30f65707 TW	289
	290	return 0;
	291	}
	292
	293	static int connector_open(struct inode inode, struct file file)
	294	{
	295	struct drm_connector *dev = inode->i_private;
	296
	297	return single_open(file, connector_show, dev);
	298	}
	299
	300	static ssize_t connector_write(struct file file, const char __user ubuf,
	301	size_t len, loff_t *offp)
	302	{
	303	struct seq_file *m = file->private_data;
	304	struct drm_connector *connector = m->private;
	305	char buf[12];
	306
	307	if (len > sizeof(buf) - 1)
	308	return -EINVAL;
	309
	310	if (copy_from_user(buf, ubuf, len))
	311	return -EFAULT;
	312
	313	buf[len] = '\0';
	314
c704b170	315	if (sysfs_streq(buf, "on"))
30f65707	316	connector->force = DRM_FORCE_ON;
c704b170	317	else if (sysfs_streq(buf, "digital"))
30f65707	318	connector->force = DRM_FORCE_ON_DIGITAL;
c704b170	319	else if (sysfs_streq(buf, "off"))
30f65707	320	connector->force = DRM_FORCE_OFF;
c704b170	321	else if (sysfs_streq(buf, "unspecified"))
30f65707 TW	322	connector->force = DRM_FORCE_UNSPECIFIED;
	323	else
	324	return -EINVAL;
	325
	326	return len;
	327	}
	328
4cf2b281 TW	329	static int edid_show(struct seq_file m, void data)
	330	{
	331	struct drm_connector *connector = m->private;
	332	struct drm_property_blob *edid = connector->edid_blob_ptr;
	333
	334	if (connector->override_edid && edid)
	335	seq_write(m, edid->data, edid->length);
	336
	337	return 0;
	338	}
	339
	340	static int edid_open(struct inode inode, struct file file)
	341	{
	342	struct drm_connector *dev = inode->i_private;
	343
	344	return single_open(file, edid_show, dev);
	345	}
	346
	347	static ssize_t edid_write(struct file file, const char __user ubuf,
	348	size_t len, loff_t *offp)
	349	{
	350	struct seq_file *m = file->private_data;
	351	struct drm_connector *connector = m->private;
	352	char *buf;
4cf2b281 TW	353	int ret;
	354
	355	buf = memdup_user(ubuf, len);
	356	if (IS_ERR(buf))
	357	return PTR_ERR(buf);
	358
6aa145bc JN	359	if (len == 5 && !strncmp(buf, "reset", 5))
	360	ret = drm_edid_override_reset(connector);
	361	else
	362	ret = drm_edid_override_set(connector, buf, len);
4cf2b281 TW	363
	364	kfree(buf);
	365
6aa145bc	366	return ret ? ret : len;
4cf2b281 TW	367	}
4cf2b281 TW	368
41752663 BM	369	/*
	370	* Returns the min and max vrr vfreq through the connector's debugfs file.
	371	* Example usage: cat /sys/kernel/debug/dri/0/DP-1/vrr_range
	372	*/
	373	static int vrr_range_show(struct seq_file m, void data)
	374	{
	375	struct drm_connector *connector = m->private;
	376
	377	if (connector->status != connector_status_connected)
	378	return -ENODEV;
	379
	380	seq_printf(m, "Min: %u\n", (u8)connector->display_info.monitor_range.min_vfreq);
	381	seq_printf(m, "Max: %u\n", (u8)connector->display_info.monitor_range.max_vfreq);
	382
	383	return 0;
	384	}
	385	DEFINE_SHOW_ATTRIBUTE(vrr_range);
	386
67d935b4 BM	387	/*
	388	* Returns Connector's max supported bpc through debugfs file.
	389	* Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc
	390	*/
	391	static int output_bpc_show(struct seq_file m, void data)
	392	{
	393	struct drm_connector *connector = m->private;
	394
	395	if (connector->status != connector_status_connected)
	396	return -ENODEV;
	397
	398	seq_printf(m, "Maximum: %u\n", connector->display_info.bpc);
	399
	400	return 0;
	401	}
	402	DEFINE_SHOW_ATTRIBUTE(output_bpc);
	403
4cf2b281 TW	404	static const struct file_operations drm_edid_fops = {
	405	.owner = THIS_MODULE,
	406	.open = edid_open,
	407	.read = seq_read,
	408	.llseek = seq_lseek,
	409	.release = single_release,
	410	.write = edid_write
	411	};
	412
	413
30f65707 TW	414	static const struct file_operations drm_connector_fops = {
	415	.owner = THIS_MODULE,
	416	.open = connector_open,
	417	.read = seq_read,
	418	.llseek = seq_lseek,
	419	.release = single_release,
	420	.write = connector_write
	421	};
	422
b792e640	423	void drm_debugfs_connector_add(struct drm_connector *connector)
30f65707 TW	424	{
30f65707 TW	425	struct drm_minor *minor = connector->dev->primary;
b792e640	426	struct dentry *root;
30f65707 TW	427
30f65707 TW	428	if (!minor->debugfs_root)
b792e640	429	return;
30f65707 TW	430
30f65707 TW	431	root = debugfs_create_dir(connector->name, minor->debugfs_root);
30f65707 TW	432	connector->debugfs_entry = root;
	433
	434	/* force */
b792e640 GKH	435	debugfs_create_file("force", S_IRUGO \| S_IWUSR, root, connector,
b792e640 GKH	436	&drm_connector_fops);
30f65707	437
4cf2b281	438	/* edid */
b792e640 GKH	439	debugfs_create_file("edid_override", S_IRUGO \| S_IWUSR, root, connector,
b792e640 GKH	440	&drm_edid_fops);
41752663 BM	441
	442	/* vrr range */
	443	debugfs_create_file("vrr_range", S_IRUGO, root, connector,
	444	&vrr_range_fops);
2509969a	445
67d935b4 BM	446	/* max bpc */
	447	debugfs_create_file("output_bpc", 0444, root, connector,
	448	&output_bpc_fops);
	449
2509969a DA	450	if (connector->funcs->debugfs_init)
2509969a DA	451	connector->funcs->debugfs_init(connector, root);
30f65707 TW	452	}
	453
	454	void drm_debugfs_connector_remove(struct drm_connector *connector)
	455	{
	456	if (!connector->debugfs_entry)
	457	return;
	458
	459	debugfs_remove_recursive(connector->debugfs_entry);
	460
	461	connector->debugfs_entry = NULL;
	462	}
	463
b792e640	464	void drm_debugfs_crtc_add(struct drm_crtc *crtc)
9edbf1fa TV	465	{
	466	struct drm_minor *minor = crtc->dev->primary;
	467	struct dentry *root;
	468	char *name;
	469
	470	name = kasprintf(GFP_KERNEL, "crtc-%d", crtc->index);
	471	if (!name)
b792e640	472	return;
9edbf1fa TV	473
	474	root = debugfs_create_dir(name, minor->debugfs_root);
	475	kfree(name);
9edbf1fa TV	476
	477	crtc->debugfs_entry = root;
	478
b792e640	479	drm_debugfs_crtc_crc_add(crtc);
9edbf1fa TV	480	}
	481
	482	void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
	483	{
	484	debugfs_remove_recursive(crtc->debugfs_entry);
	485	crtc->debugfs_entry = NULL;
	486	}
	487
	488	#endif /* CONFIG_DEBUG_FS */