mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-27 14:43:58 +08:00
b516a6c954
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so no need to do this explicitly. Additionally it uses debugfs_remove_recursive() to clean up the debugfs files, so no need for adding fake drm_info_node entries. And finally there's no need to clean up on error, drm_debugfs_cleanup() is called in the error path. Cc: linux@armlinux.org.uk Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20170126225621.12314-6-noralf@tronnes.org
133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
/*
|
|
* Copyright (C) 2012 Russell King
|
|
* Rewritten from the dovefb driver, and Armada510 manuals.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#include <linux/ctype.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/module.h>
|
|
#include <linux/seq_file.h>
|
|
#include <drm/drmP.h>
|
|
#include "armada_crtc.h"
|
|
#include "armada_drm.h"
|
|
|
|
static int armada_debugfs_gem_linear_show(struct seq_file *m, void *data)
|
|
{
|
|
struct drm_info_node *node = m->private;
|
|
struct drm_device *dev = node->minor->dev;
|
|
struct armada_private *priv = dev->dev_private;
|
|
struct drm_printer p = drm_seq_file_printer(m);
|
|
|
|
mutex_lock(&priv->linear_lock);
|
|
drm_mm_print(&priv->linear, &p);
|
|
mutex_unlock(&priv->linear_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int armada_debugfs_reg_show(struct seq_file *m, void *data)
|
|
{
|
|
struct drm_device *dev = m->private;
|
|
struct armada_private *priv = dev->dev_private;
|
|
int n, i;
|
|
|
|
if (priv) {
|
|
for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
|
|
struct armada_crtc *dcrtc = priv->dcrtc[n];
|
|
if (!dcrtc)
|
|
continue;
|
|
|
|
for (i = 0x84; i <= 0x1c4; i += 4) {
|
|
uint32_t v = readl_relaxed(dcrtc->base + i);
|
|
seq_printf(m, "%u: 0x%04x: 0x%08x\n", n, i, v);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int armada_debugfs_reg_r_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, armada_debugfs_reg_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations fops_reg_r = {
|
|
.owner = THIS_MODULE,
|
|
.open = armada_debugfs_reg_r_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int armada_debugfs_write(struct file *file, const char __user *ptr,
|
|
size_t len, loff_t *off)
|
|
{
|
|
struct drm_device *dev = file->private_data;
|
|
struct armada_private *priv = dev->dev_private;
|
|
struct armada_crtc *dcrtc = priv->dcrtc[0];
|
|
char buf[32], *p;
|
|
uint32_t reg, val;
|
|
int ret;
|
|
|
|
if (*off != 0)
|
|
return 0;
|
|
|
|
if (len > sizeof(buf) - 1)
|
|
len = sizeof(buf) - 1;
|
|
|
|
ret = strncpy_from_user(buf, ptr, len);
|
|
if (ret < 0)
|
|
return ret;
|
|
buf[len] = '\0';
|
|
|
|
reg = simple_strtoul(buf, &p, 16);
|
|
if (!isspace(*p))
|
|
return -EINVAL;
|
|
val = simple_strtoul(p + 1, NULL, 16);
|
|
|
|
if (reg >= 0x84 && reg <= 0x1c4)
|
|
writel(val, dcrtc->base + reg);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations fops_reg_w = {
|
|
.owner = THIS_MODULE,
|
|
.open = simple_open,
|
|
.write = armada_debugfs_write,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static struct drm_info_list armada_debugfs_list[] = {
|
|
{ "gem_linear", armada_debugfs_gem_linear_show, 0 },
|
|
};
|
|
#define ARMADA_DEBUGFS_ENTRIES ARRAY_SIZE(armada_debugfs_list)
|
|
|
|
int armada_drm_debugfs_init(struct drm_minor *minor)
|
|
{
|
|
struct dentry *de;
|
|
int ret;
|
|
|
|
ret = drm_debugfs_create_files(armada_debugfs_list,
|
|
ARMADA_DEBUGFS_ENTRIES,
|
|
minor->debugfs_root, minor);
|
|
if (ret)
|
|
return ret;
|
|
|
|
de = debugfs_create_file("reg", S_IFREG | S_IRUSR,
|
|
minor->debugfs_root, minor->dev, &fops_reg_r);
|
|
if (!de)
|
|
return -ENOMEM;
|
|
|
|
de = debugfs_create_file("reg_wr", S_IFREG | S_IWUSR,
|
|
minor->debugfs_root, minor->dev, &fops_reg_w);
|
|
if (!de)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|