423 lines
10 KiB
C
423 lines
10 KiB
C
/*
|
|
* Created: Sun Dec 21 13:08:50 2008 by bgamari@gmail.com
|
|
*
|
|
* Copyright 2008 Ben Gamari <bgamari@gmail.com>
|
|
*
|
|
* 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/seq_file.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/export.h>
|
|
|
|
#include <drm/drm_debugfs.h>
|
|
#include <drm/drm_edid.h>
|
|
#include <drm/drm_atomic.h>
|
|
#include <drm/drmP.h>
|
|
|
|
#include "drm_internal.h"
|
|
#include "drm_crtc_internal.h"
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
|
|
/***************************************************
|
|
* Initialization, etc.
|
|
**************************************************/
|
|
|
|
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().
|
|
*/
|
|
int 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 dentry *ent;
|
|
struct drm_info_node *tmp;
|
|
int i, ret;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
u32 features = files[i].driver_features;
|
|
|
|
if (features != 0 &&
|
|
(dev->driver->driver_features & features) != features)
|
|
continue;
|
|
|
|
tmp = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
|
|
if (tmp == NULL) {
|
|
ret = -1;
|
|
goto fail;
|
|
}
|
|
ent = debugfs_create_file(files[i].name, S_IFREG | S_IRUGO,
|
|
root, tmp, &drm_debugfs_fops);
|
|
if (!ent) {
|
|
DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n",
|
|
root, files[i].name);
|
|
kfree(tmp);
|
|
ret = -1;
|
|
goto fail;
|
|
}
|
|
|
|
tmp->minor = minor;
|
|
tmp->dent = ent;
|
|
tmp->info_ent = &files[i];
|
|
|
|
mutex_lock(&minor->debugfs_lock);
|
|
list_add(&tmp->list, &minor->debugfs_list);
|
|
mutex_unlock(&minor->debugfs_lock);
|
|
}
|
|
return 0;
|
|
|
|
fail:
|
|
drm_debugfs_remove_files(files, count, minor);
|
|
return ret;
|
|
}
|
|
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];
|
|
int ret;
|
|
|
|
INIT_LIST_HEAD(&minor->debugfs_list);
|
|
mutex_init(&minor->debugfs_lock);
|
|
sprintf(name, "%d", minor_id);
|
|
minor->debugfs_root = debugfs_create_dir(name, root);
|
|
if (!minor->debugfs_root) {
|
|
DRM_ERROR("Cannot create /sys/kernel/debug/dri/%s\n", name);
|
|
return -1;
|
|
}
|
|
|
|
ret = drm_debugfs_create_files(drm_debugfs_list, DRM_DEBUGFS_ENTRIES,
|
|
minor->debugfs_root, minor);
|
|
if (ret) {
|
|
debugfs_remove(minor->debugfs_root);
|
|
minor->debugfs_root = NULL;
|
|
DRM_ERROR("Failed to create core drm debugfs files\n");
|
|
return ret;
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
|
|
ret = drm_atomic_debugfs_init(minor);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to create atomic debugfs files\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
|
|
ret = drm_framebuffer_debugfs_init(minor);
|
|
if (ret) {
|
|
DRM_ERROR("Failed to create framebuffer debugfs file\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (dev->driver->debugfs_init) {
|
|
ret = dev->driver->debugfs_init(minor);
|
|
if (ret) {
|
|
DRM_ERROR("DRM: Driver failed to initialize "
|
|
"/sys/kernel/debug/dri.\n");
|
|
return ret;
|
|
}
|
|
}
|
|
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);
|
|
}
|
|
|
|
int drm_debugfs_cleanup(struct drm_minor *minor)
|
|
{
|
|
if (!minor->debugfs_root)
|
|
return 0;
|
|
|
|
drm_debugfs_remove_all_files(minor);
|
|
|
|
debugfs_remove_recursive(minor->debugfs_root);
|
|
minor->debugfs_root = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 (!strcmp(buf, "on"))
|
|
connector->force = DRM_FORCE_ON;
|
|
else if (!strcmp(buf, "digital"))
|
|
connector->force = DRM_FORCE_ON_DIGITAL;
|
|
else if (!strcmp(buf, "off"))
|
|
connector->force = DRM_FORCE_OFF;
|
|
else if (!strcmp(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;
|
|
struct edid *edid;
|
|
int ret;
|
|
|
|
buf = memdup_user(ubuf, len);
|
|
if (IS_ERR(buf))
|
|
return PTR_ERR(buf);
|
|
|
|
edid = (struct edid *) buf;
|
|
|
|
if (len == 5 && !strncmp(buf, "reset", 5)) {
|
|
connector->override_edid = false;
|
|
ret = drm_mode_connector_update_edid_property(connector, NULL);
|
|
} else if (len < EDID_LENGTH ||
|
|
EDID_LENGTH * (1 + edid->extensions) > len)
|
|
ret = -EINVAL;
|
|
else {
|
|
connector->override_edid = false;
|
|
ret = drm_mode_connector_update_edid_property(connector, edid);
|
|
if (!ret)
|
|
connector->override_edid = true;
|
|
}
|
|
|
|
kfree(buf);
|
|
|
|
return (ret) ? ret : len;
|
|
}
|
|
|
|
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
|
|
};
|
|
|
|
int drm_debugfs_connector_add(struct drm_connector *connector)
|
|
{
|
|
struct drm_minor *minor = connector->dev->primary;
|
|
struct dentry *root, *ent;
|
|
|
|
if (!minor->debugfs_root)
|
|
return -1;
|
|
|
|
root = debugfs_create_dir(connector->name, minor->debugfs_root);
|
|
if (!root)
|
|
return -ENOMEM;
|
|
|
|
connector->debugfs_entry = root;
|
|
|
|
/* force */
|
|
ent = debugfs_create_file("force", S_IRUGO | S_IWUSR, root, connector,
|
|
&drm_connector_fops);
|
|
if (!ent)
|
|
goto error;
|
|
|
|
/* edid */
|
|
ent = debugfs_create_file("edid_override", S_IRUGO | S_IWUSR, root,
|
|
connector, &drm_edid_fops);
|
|
if (!ent)
|
|
goto error;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
debugfs_remove_recursive(connector->debugfs_entry);
|
|
connector->debugfs_entry = NULL;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void drm_debugfs_connector_remove(struct drm_connector *connector)
|
|
{
|
|
if (!connector->debugfs_entry)
|
|
return;
|
|
|
|
debugfs_remove_recursive(connector->debugfs_entry);
|
|
|
|
connector->debugfs_entry = NULL;
|
|
}
|
|
|
|
int 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 -ENOMEM;
|
|
|
|
root = debugfs_create_dir(name, minor->debugfs_root);
|
|
kfree(name);
|
|
if (!root)
|
|
return -ENOMEM;
|
|
|
|
crtc->debugfs_entry = root;
|
|
|
|
if (drm_debugfs_crtc_crc_add(crtc))
|
|
goto error;
|
|
|
|
return 0;
|
|
|
|
error:
|
|
drm_debugfs_crtc_remove(crtc);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void drm_debugfs_crtc_remove(struct drm_crtc *crtc)
|
|
{
|
|
debugfs_remove_recursive(crtc->debugfs_entry);
|
|
crtc->debugfs_entry = NULL;
|
|
}
|
|
|
|
#endif /* CONFIG_DEBUG_FS */
|