drivers/gpu/drm/pl111/pl111_debugfs.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/pl111/pl111_debugfs.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/pl111/pl111_debugfs.c
Extension
.c
Size
1322 bytes
Lines
60
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Copyright © 2017 Broadcom
 */

#include <linux/seq_file.h>

#include <drm/drm_debugfs.h>
#include <drm/drm_file.h>

#include "pl111_drm.h"

#define REGDEF(reg) { reg, #reg }
static const struct {
	u32 reg;
	const char *name;
} pl111_reg_defs[] = {
	REGDEF(CLCD_TIM0),
	REGDEF(CLCD_TIM1),
	REGDEF(CLCD_TIM2),
	REGDEF(CLCD_TIM3),
	REGDEF(CLCD_UBAS),
	REGDEF(CLCD_LBAS),
	REGDEF(CLCD_PL111_CNTL),
	REGDEF(CLCD_PL111_IENB),
	REGDEF(CLCD_PL111_RIS),
	REGDEF(CLCD_PL111_MIS),
	REGDEF(CLCD_PL111_ICR),
	REGDEF(CLCD_PL111_UCUR),
	REGDEF(CLCD_PL111_LCUR),
};

static int pl111_debugfs_regs(struct seq_file *m, void *unused)
{
	struct drm_info_node *node = (struct drm_info_node *)m->private;
	struct drm_device *dev = node->minor->dev;
	struct pl111_drm_dev_private *priv = dev->dev_private;
	int i;

	for (i = 0; i < ARRAY_SIZE(pl111_reg_defs); i++) {
		seq_printf(m, "%s (0x%04x): 0x%08x\n",
			   pl111_reg_defs[i].name, pl111_reg_defs[i].reg,
			   readl(priv->regs + pl111_reg_defs[i].reg));
	}

	return 0;
}

static const struct drm_info_list pl111_debugfs_list[] = {
	{"regs", pl111_debugfs_regs, 0},
};

void
pl111_debugfs_init(struct drm_minor *minor)
{
	drm_debugfs_create_files(pl111_debugfs_list,
				 ARRAY_SIZE(pl111_debugfs_list),
				 minor->debugfs_root, minor);
}

Annotation

Implementation Notes