drivers/gpu/drm/pl111/pl111_debugfs.c

   1 /*
   2  *  Copyright © 2017 Broadcom
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #include <linux/amba/clcd-regs.h>
  10 #include <linux/seq_file.h>
  11
  12 #include <drm/drm_debugfs.h>
  13 #include <drm/drm_file.h>
  14
  15 #include "pl111_drm.h"
  16
  17 #define REGDEF(reg) { reg, #reg }
  18 static const struct {
  19         u32 reg;
  20         const char *name;
  21 } pl111_reg_defs[] = {
  22         REGDEF(CLCD_TIM0),
  23         REGDEF(CLCD_TIM1),
  24         REGDEF(CLCD_TIM2),
  25         REGDEF(CLCD_TIM3),
  26         REGDEF(CLCD_UBAS),
  27         REGDEF(CLCD_LBAS),
  28         REGDEF(CLCD_PL111_CNTL),
  29         REGDEF(CLCD_PL111_IENB),
  30         REGDEF(CLCD_PL111_RIS),
  31         REGDEF(CLCD_PL111_MIS),
  32         REGDEF(CLCD_PL111_ICR),
  33         REGDEF(CLCD_PL111_UCUR),
  34         REGDEF(CLCD_PL111_LCUR),
  35 };
  36
  37 int pl111_debugfs_regs(struct seq_file *m, void *unused)
  38 {
  39         struct drm_info_node *node = (struct drm_info_node *)m->private;
  40         struct drm_device *dev = node->minor->dev;
  41         struct pl111_drm_dev_private *priv = dev->dev_private;
  42         int i;
  43
  44         for (i = 0; i < ARRAY_SIZE(pl111_reg_defs); i++) {
  45                 seq_printf(m, "%s (0x%04x): 0x%08x\n",
  46                            pl111_reg_defs[i].name, pl111_reg_defs[i].reg,
  47                            readl(priv->regs + pl111_reg_defs[i].reg));
  48         }
  49
  50         return 0;
  51 }
  52
  53 static const struct drm_info_list pl111_debugfs_list[] = {
  54         {"regs", pl111_debugfs_regs, 0},
  55 };
  56
  57 int
  58 pl111_debugfs_init(struct drm_minor *minor)
  59 {
  60         return drm_debugfs_create_files(pl111_debugfs_list,
  61                                         ARRAY_SIZE(pl111_debugfs_list),
  62                                         minor->debugfs_root, minor);
  63 }