drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c
Extension
.c
Size
18986 bytes
Lines
764
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+
/*
 * R-Car Display Unit DRM driver
 *
 * Copyright (C) 2013-2015 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 */

#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/wait.h>

#include <drm/clients/drm_client_setup.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>

#include "rcar_du_drv.h"
#include "rcar_du_kms.h"

/* -----------------------------------------------------------------------------
 * Device Information
 */

static const struct rcar_du_device_info rzg1_du_r8a7743_info = {
	.gen = 2,
	.features = RCAR_DU_FEATURE_CRTC_IRQ
		  | RCAR_DU_FEATURE_CRTC_CLOCK
		  | RCAR_DU_FEATURE_INTERLACED
		  | RCAR_DU_FEATURE_TVM_SYNC,
	.channels_mask = BIT(1) | BIT(0),
	.routes = {
		/*
		 * R8A774[34] has one RGB output and one LVDS output
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(1) | BIT(0),
			.port = 0,
		},
		[RCAR_DU_OUTPUT_LVDS0] = {
			.possible_crtcs = BIT(0),
			.port = 1,
		},
	},
	.num_lvds = 1,
	.num_rpf = 4,
};

static const struct rcar_du_device_info rzg1_du_r8a7745_info = {
	.gen = 2,
	.features = RCAR_DU_FEATURE_CRTC_IRQ
		  | RCAR_DU_FEATURE_CRTC_CLOCK
		  | RCAR_DU_FEATURE_INTERLACED
		  | RCAR_DU_FEATURE_TVM_SYNC,
	.channels_mask = BIT(1) | BIT(0),
	.routes = {
		/*
		 * R8A7745 has two RGB outputs
		 */
		[RCAR_DU_OUTPUT_DPAD0] = {
			.possible_crtcs = BIT(0),
			.port = 0,
		},
		[RCAR_DU_OUTPUT_DPAD1] = {
			.possible_crtcs = BIT(1),
			.port = 1,
		},
	},
	.num_rpf = 4,
};

static const struct rcar_du_device_info rzg1_du_r8a77470_info = {
	.gen = 2,
	.features = RCAR_DU_FEATURE_CRTC_IRQ
		  | RCAR_DU_FEATURE_CRTC_CLOCK
		  | RCAR_DU_FEATURE_INTERLACED
		  | RCAR_DU_FEATURE_TVM_SYNC,
	.channels_mask = BIT(1) | BIT(0),

Annotation

Implementation Notes