drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c

Source file repositories/reference/linux-study-clean/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c
Extension
.c
Size
22323 bytes
Lines
839
Domain
Driver Families
Bucket
drivers/media
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+
/*
 * Copyright 2020 Kévin L'hôpital <kevin.lhopital@bootlin.com>
 * Copyright 2020-2022 Bootlin
 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 */

#include <linux/clk.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <media/mipi-csi2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>

#include "sun8i_a83t_dphy.h"
#include "sun8i_a83t_mipi_csi2.h"
#include "sun8i_a83t_mipi_csi2_reg.h"

/* Format */

static const struct sun8i_a83t_mipi_csi2_format
sun8i_a83t_mipi_csi2_formats[] = {
	{
		.mbus_code	= MEDIA_BUS_FMT_SBGGR8_1X8,
		.data_type	= MIPI_CSI2_DT_RAW8,
		.bpp		= 8,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SGBRG8_1X8,
		.data_type	= MIPI_CSI2_DT_RAW8,
		.bpp		= 8,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
		.data_type	= MIPI_CSI2_DT_RAW8,
		.bpp		= 8,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SRGGB8_1X8,
		.data_type	= MIPI_CSI2_DT_RAW8,
		.bpp		= 8,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SBGGR10_1X10,
		.data_type	= MIPI_CSI2_DT_RAW10,
		.bpp		= 10,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SGBRG10_1X10,
		.data_type	= MIPI_CSI2_DT_RAW10,
		.bpp		= 10,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
		.data_type	= MIPI_CSI2_DT_RAW10,
		.bpp		= 10,
	},
	{
		.mbus_code	= MEDIA_BUS_FMT_SRGGB10_1X10,
		.data_type	= MIPI_CSI2_DT_RAW10,
		.bpp		= 10,
	},
};

static const struct sun8i_a83t_mipi_csi2_format *
sun8i_a83t_mipi_csi2_format_find(u32 mbus_code)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(sun8i_a83t_mipi_csi2_formats); i++)
		if (sun8i_a83t_mipi_csi2_formats[i].mbus_code == mbus_code)
			return &sun8i_a83t_mipi_csi2_formats[i];

	return NULL;
}

/* Controller */

static void
sun8i_a83t_mipi_csi2_init(struct sun8i_a83t_mipi_csi2_device *csi2_dev)
{
	struct regmap *regmap = csi2_dev->regmap;

	/*

Annotation

Implementation Notes