drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c
Extension
.c
Size
1234 bytes
Lines
54
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-or-later
/*
 * Copyright 2015 Freescale Semiconductor, Inc.
 *
 * Freescale DCU drm device driver
 */

#include <drm/drm_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_probe_helper.h>

#include "fsl_dcu_drm_crtc.h"
#include "fsl_dcu_drm_drv.h"

static const struct drm_mode_config_funcs fsl_dcu_drm_mode_config_funcs = {
	.atomic_check = drm_atomic_helper_check,
	.atomic_commit = drm_atomic_helper_commit,
	.fb_create = drm_gem_fb_create,
};

int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev)
{
	int ret;

	drm_mode_config_init(fsl_dev->drm);

	fsl_dev->drm->mode_config.min_width = 0;
	fsl_dev->drm->mode_config.min_height = 0;
	fsl_dev->drm->mode_config.max_width = 2031;
	fsl_dev->drm->mode_config.max_height = 2047;
	fsl_dev->drm->mode_config.funcs = &fsl_dcu_drm_mode_config_funcs;

	ret = fsl_dcu_drm_crtc_create(fsl_dev);
	if (ret)
		goto err;

	ret = fsl_dcu_drm_encoder_create(fsl_dev, &fsl_dev->crtc);
	if (ret)
		goto err;

	ret = fsl_dcu_create_outputs(fsl_dev);
	if (ret)
		goto err;

	drm_mode_config_reset(fsl_dev->drm);
	drm_kms_helper_poll_init(fsl_dev->drm);

	return 0;

err:
	drm_mode_config_cleanup(fsl_dev->drm);
	return ret;
}

Annotation

Implementation Notes