drivers/staging/iio/addac/adt7316-i2c.c

Source file repositories/reference/linux-study-clean/drivers/staging/iio/addac/adt7316-i2c.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/iio/addac/adt7316-i2c.c
Extension
.c
Size
3118 bytes
Lines
149
Domain
Driver Families
Bucket
drivers/staging
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

if (ret < 0) {
			dev_err(&cl->dev, "I2C multi read error\n");
			return ret;
		}
	}

	return 0;
}

static int adt7316_i2c_multi_write(void *client, u8 reg, u8 count, u8 *data)
{
	struct i2c_client *cl = client;
	int i, ret;

	if (count > ADT7316_REG_MAX_ADDR)
		count = ADT7316_REG_MAX_ADDR;

	for (i = 0; i < count; i++) {
		ret = adt7316_i2c_write(cl, reg, data[i]);
		if (ret < 0) {
			dev_err(&cl->dev, "I2C multi write error\n");
			return ret;
		}
	}

	return 0;
}

/*
 * device probe and remove
 */

static int adt7316_i2c_probe(struct i2c_client *client)
{
	const struct i2c_device_id *id = i2c_client_get_device_id(client);
	struct adt7316_bus bus = {
		.client = client,
		.irq = client->irq,
		.read = adt7316_i2c_read,
		.write = adt7316_i2c_write,
		.multi_read = adt7316_i2c_multi_read,
		.multi_write = adt7316_i2c_multi_write,
	};

	return adt7316_probe(&client->dev, &bus, id->name);
}

static const struct i2c_device_id adt7316_i2c_id[] = {
	{ "adt7316" },
	{ "adt7317" },
	{ "adt7318" },
	{ "adt7516" },
	{ "adt7517" },
	{ "adt7519" },
	{ }
};

MODULE_DEVICE_TABLE(i2c, adt7316_i2c_id);

static const struct of_device_id adt7316_of_match[] = {
	{ .compatible = "adi,adt7316" },
	{ .compatible = "adi,adt7317" },
	{ .compatible = "adi,adt7318" },
	{ .compatible = "adi,adt7516" },
	{ .compatible = "adi,adt7517" },
	{ .compatible = "adi,adt7519" },
	{ }
};

MODULE_DEVICE_TABLE(of, adt7316_of_match);

static struct i2c_driver adt7316_driver = {
	.driver = {
		.name = "adt7316",
		.of_match_table = adt7316_of_match,
		.pm = pm_sleep_ptr(&adt7316_pm_ops),
	},
	.probe = adt7316_i2c_probe,
	.id_table = adt7316_i2c_id,
};
module_i2c_driver(adt7316_driver);

MODULE_AUTHOR("Sonic Zhang <sonic.zhang@analog.com>");
MODULE_DESCRIPTION("I2C bus driver for Analog Devices ADT7316/7/9 and ADT7516/7/8 digital temperature sensor, ADC and DAC");
MODULE_LICENSE("GPL v2");

Annotation

Implementation Notes