drm/pl111/pl111_debugfs.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  *  Copyright © 2017 Broadcom
0004  */
0005
0006 #include <linux/seq_file.h>
0007
0008 #include <drm/drm_debugfs.h>
0009 #include <drm/drm_file.h>
0010
0011 #include "pl111_drm.h"
0012
0013 #define REGDEF(reg) { reg, #reg }
0014 static const struct {
0015     u32 reg;
0016     const char *name;
0017 } pl111_reg_defs[] = {
0018     REGDEF(CLCD_TIM0),
0019     REGDEF(CLCD_TIM1),
0020     REGDEF(CLCD_TIM2),
0021     REGDEF(CLCD_TIM3),
0022     REGDEF(CLCD_UBAS),
0023     REGDEF(CLCD_LBAS),
0024     REGDEF(CLCD_PL111_CNTL),
0025     REGDEF(CLCD_PL111_IENB),
0026     REGDEF(CLCD_PL111_RIS),
0027     REGDEF(CLCD_PL111_MIS),
0028     REGDEF(CLCD_PL111_ICR),
0029     REGDEF(CLCD_PL111_UCUR),
0030     REGDEF(CLCD_PL111_LCUR),
0031 };
0032
0033 static int pl111_debugfs_regs(struct seq_file *m, void *unused)
0034 {
0035     struct drm_info_node *node = (struct drm_info_node *)m->private;
0036     struct drm_device *dev = node->minor->dev;
0037     struct pl111_drm_dev_private *priv = dev->dev_private;
0038     int i;
0039
0040     for (i = 0; i < ARRAY_SIZE(pl111_reg_defs); i++) {
0041         seq_printf(m, "%s (0x%04x): 0x%08x\n",
0042                pl111_reg_defs[i].name, pl111_reg_defs[i].reg,
0043                readl(priv->regs + pl111_reg_defs[i].reg));
0044     }
0045
0046     return 0;
0047 }
0048
0049 static const struct drm_info_list pl111_debugfs_list[] = {
0050     {"regs", pl111_debugfs_regs, 0},
0051 };
0052
0053 void
0054 pl111_debugfs_init(struct drm_minor *minor)
0055 {
0056     drm_debugfs_create_files(pl111_debugfs_list,
0057                  ARRAY_SIZE(pl111_debugfs_list),
0058                  minor->debugfs_root, minor);
0059 }