drivers/iio/imu/adis16480.c

Source file repositories/reference/linux-study-clean/drivers/iio/imu/adis16480.c

File Facts

System
Linux kernel
Corpus path
drivers/iio/imu/adis16480.c
Extension
.c
Size
57805 bytes
Lines
1873
Domain
Driver Families
Bucket
drivers/iio
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern 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

static const struct file_operations adis16480_firmware_revision_fops = {
	.open = simple_open,
	.read = adis16480_show_firmware_revision,
	.llseek = default_llseek,
	.owner = THIS_MODULE,
};

static ssize_t adis16480_show_firmware_date(struct file *file,
		char __user *userbuf, size_t count, loff_t *ppos)
{
	struct adis16480 *adis16480 = file->private_data;
	u16 md, year;
	char buf[12];
	size_t len;
	int ret;

	ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_FIRM_Y, &year);
	if (ret)
		return ret;

	ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_FIRM_DM, &md);
	if (ret)
		return ret;

	len = snprintf(buf, sizeof(buf), "%.2x-%.2x-%.4x\n",
			md >> 8, md & 0xff, year);

	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
}

static const struct file_operations adis16480_firmware_date_fops = {
	.open = simple_open,
	.read = adis16480_show_firmware_date,
	.llseek = default_llseek,
	.owner = THIS_MODULE,
};

static int adis16480_show_serial_number(void *arg, u64 *val)
{
	struct adis16480 *adis16480 = arg;
	u16 serial;
	int ret;

	ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_SERIAL_NUM,
		&serial);
	if (ret)
		return ret;

	*val = serial;

	return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(adis16480_serial_number_fops,
	adis16480_show_serial_number, NULL, "0x%.4llx\n");

static int adis16480_show_product_id(void *arg, u64 *val)
{
	struct adis16480 *adis16480 = arg;
	u16 prod_id;
	int ret;

	ret = adis_read_reg_16(&adis16480->adis, ADIS16480_REG_PROD_ID,
		&prod_id);
	if (ret)
		return ret;

	*val = prod_id;

	return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(adis16480_product_id_fops,
	adis16480_show_product_id, NULL, "%llu\n");

static int adis16480_show_flash_count(void *arg, u64 *val)
{
	struct adis16480 *adis16480 = arg;
	u32 flash_count;
	int ret;

	ret = adis_read_reg_32(&adis16480->adis, ADIS16480_REG_FLASH_CNT,
		&flash_count);
	if (ret)
		return ret;

	*val = flash_count;

	return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(adis16480_flash_count_fops,
	adis16480_show_flash_count, NULL, "%lld\n");

Annotation

Implementation Notes