mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-17 09:57:46 +07:00
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
/*
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* Copyright (C) 2012 Russell King
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* Rewritten from the dovefb driver, and Armada510 manuals.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/ctype.h>
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#include <linux/debugfs.h>
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#include <linux/module.h>
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#include <linux/seq_file.h>
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#include <drm/drmP.h>
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#include "armada_crtc.h"
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#include "armada_drm.h"
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static int armada_debugfs_gem_linear_show(struct seq_file *m, void *data)
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{
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struct drm_info_node *node = m->private;
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struct drm_device *dev = node->minor->dev;
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struct armada_private *priv = dev->dev_private;
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struct drm_printer p = drm_seq_file_printer(m);
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mutex_lock(&priv->linear_lock);
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drm_mm_print(&priv->linear, &p);
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mutex_unlock(&priv->linear_lock);
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return 0;
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}
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static int armada_debugfs_reg_show(struct seq_file *m, void *data)
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{
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struct drm_device *dev = m->private;
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struct armada_private *priv = dev->dev_private;
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int n, i;
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if (priv) {
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for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) {
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struct armada_crtc *dcrtc = priv->dcrtc[n];
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if (!dcrtc)
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continue;
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for (i = 0x84; i <= 0x1c4; i += 4) {
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uint32_t v = readl_relaxed(dcrtc->base + i);
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seq_printf(m, "%u: 0x%04x: 0x%08x\n", n, i, v);
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}
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}
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}
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return 0;
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}
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static int armada_debugfs_reg_r_open(struct inode *inode, struct file *file)
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{
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return single_open(file, armada_debugfs_reg_show, inode->i_private);
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}
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static const struct file_operations fops_reg_r = {
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.owner = THIS_MODULE,
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.open = armada_debugfs_reg_r_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int armada_debugfs_write(struct file *file, const char __user *ptr,
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size_t len, loff_t *off)
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{
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struct drm_device *dev = file->private_data;
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struct armada_private *priv = dev->dev_private;
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struct armada_crtc *dcrtc = priv->dcrtc[0];
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char buf[32], *p;
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uint32_t reg, val;
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int ret;
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if (*off != 0)
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return 0;
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if (len > sizeof(buf) - 1)
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len = sizeof(buf) - 1;
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ret = strncpy_from_user(buf, ptr, len);
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if (ret < 0)
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return ret;
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buf[len] = '\0';
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reg = simple_strtoul(buf, &p, 16);
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if (!isspace(*p))
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return -EINVAL;
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val = simple_strtoul(p + 1, NULL, 16);
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if (reg >= 0x84 && reg <= 0x1c4)
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writel(val, dcrtc->base + reg);
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return len;
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}
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static const struct file_operations fops_reg_w = {
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.owner = THIS_MODULE,
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.open = simple_open,
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.write = armada_debugfs_write,
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.llseek = noop_llseek,
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};
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static struct drm_info_list armada_debugfs_list[] = {
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{ "gem_linear", armada_debugfs_gem_linear_show, 0 },
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};
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#define ARMADA_DEBUGFS_ENTRIES ARRAY_SIZE(armada_debugfs_list)
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int armada_drm_debugfs_init(struct drm_minor *minor)
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{
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struct dentry *de;
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int ret;
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ret = drm_debugfs_create_files(armada_debugfs_list,
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ARMADA_DEBUGFS_ENTRIES,
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minor->debugfs_root, minor);
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if (ret)
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return ret;
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de = debugfs_create_file("reg", S_IFREG | S_IRUSR,
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minor->debugfs_root, minor->dev, &fops_reg_r);
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if (!de)
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return -ENOMEM;
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de = debugfs_create_file("reg_wr", S_IFREG | S_IWUSR,
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minor->debugfs_root, minor->dev, &fops_reg_w);
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if (!de)
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return -ENOMEM;
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return 0;
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}
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