drivers/gpu/drm/pl111/pl111_debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  Copyright © 2017 Broadcom
   4  */
   5
   6 #include <linux/amba/clcd-regs.h>
   7 #include <linux/seq_file.h>
   8 #include <drm/drm_debugfs.h>
   9 #include <drm/drmP.h>
  10 #include "pl111_drm.h"
  11
  12 #define REGDEF(reg) { reg, #reg }
  13 static const struct {
  14         u32 reg;
  15         const char *name;
  16 } pl111_reg_defs[] = {
  17         REGDEF(CLCD_TIM0),
  18         REGDEF(CLCD_TIM1),
  19         REGDEF(CLCD_TIM2),
  20         REGDEF(CLCD_TIM3),
  21         REGDEF(CLCD_UBAS),
  22         REGDEF(CLCD_LBAS),
  23         REGDEF(CLCD_PL111_CNTL),
  24         REGDEF(CLCD_PL111_IENB),
  25         REGDEF(CLCD_PL111_RIS),
  26         REGDEF(CLCD_PL111_MIS),
  27         REGDEF(CLCD_PL111_ICR),
  28         REGDEF(CLCD_PL111_UCUR),
  29         REGDEF(CLCD_PL111_LCUR),
  30 };
  31
  32 int pl111_debugfs_regs(struct seq_file *m, void *unused)
  33 {
  34         struct drm_info_node *node = (struct drm_info_node *)m->private;
  35         struct drm_device *dev = node->minor->dev;
  36         struct pl111_drm_dev_private *priv = dev->dev_private;
  37         int i;
  38
  39         for (i = 0; i < ARRAY_SIZE(pl111_reg_defs); i++) {
  40                 seq_printf(m, "%s (0x%04x): 0x%08x\n",
  41                            pl111_reg_defs[i].name, pl111_reg_defs[i].reg,
  42                            readl(priv->regs + pl111_reg_defs[i].reg));
  43         }
  44
  45         return 0;
  46 }
  47
  48 static const struct drm_info_list pl111_debugfs_list[] = {
  49         {"regs", pl111_debugfs_regs, 0},
  50 };
  51
  52 int
  53 pl111_debugfs_init(struct drm_minor *minor)
  54 {
  55         return drm_debugfs_create_files(pl111_debugfs_list,
  56                                         ARRAY_SIZE(pl111_debugfs_list),
  57                                         minor->debugfs_root, minor);
  58 }