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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /* * 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; } |