112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2012 Russell King
|
|
* Rewritten from the dovefb driver, and Armada510 manuals.
|
|
*/
|
|
|
|
#include <linux/ctype.h>
|
|
#include <linux/module.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include <drm/drm_debugfs.h>
|
|
#include <drm/drm_file.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 = drm_to_armada_dev(dev);
|
|
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_crtc_reg_show(struct seq_file *m, void *data)
|
|
{
|
|
struct armada_crtc *dcrtc = m->private;
|
|
int i;
|
|
|
|
for (i = 0x84; i <= 0x1c4; i += 4) {
|
|
u32 v = readl_relaxed(dcrtc->base + i);
|
|
seq_printf(m, "0x%04x: 0x%08x\n", i, v);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int armada_debugfs_crtc_reg_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, armada_debugfs_crtc_reg_show,
|
|
inode->i_private);
|
|
}
|
|
|
|
static int armada_debugfs_crtc_reg_write(struct file *file,
|
|
const char __user *ptr, size_t len, loff_t *off)
|
|
{
|
|
struct armada_crtc *dcrtc;
|
|
unsigned long reg, mask, val;
|
|
char buf[32];
|
|
int ret;
|
|
u32 v;
|
|
|
|
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';
|
|
|
|
if (sscanf(buf, "%lx %lx %lx", ®, &mask, &val) != 3)
|
|
return -EINVAL;
|
|
if (reg < 0x84 || reg > 0x1c4 || reg & 3)
|
|
return -ERANGE;
|
|
|
|
dcrtc = ((struct seq_file *)file->private_data)->private;
|
|
v = readl(dcrtc->base + reg);
|
|
v &= ~mask;
|
|
v |= val & mask;
|
|
writel(v, dcrtc->base + reg);
|
|
|
|
return len;
|
|
}
|
|
|
|
static const struct file_operations armada_debugfs_crtc_reg_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = armada_debugfs_crtc_reg_open,
|
|
.read = seq_read,
|
|
.write = armada_debugfs_crtc_reg_write,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc)
|
|
{
|
|
debugfs_create_file("armada-regs", 0600, dcrtc->crtc.debugfs_entry,
|
|
dcrtc, &armada_debugfs_crtc_reg_fops);
|
|
}
|
|
|
|
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)
|
|
{
|
|
drm_debugfs_create_files(armada_debugfs_list, ARMADA_DEBUGFS_ENTRIES,
|
|
minor->debugfs_root, minor);
|
|
|
|
return 0;
|
|
}
|