drivers/hwmon/pmbus/max20730.c

Source file repositories/reference/linux-study-clean/drivers/hwmon/pmbus/max20730.c

File Facts

System
Linux kernel
Corpus path
drivers/hwmon/pmbus/max20730.c
Extension
.c
Size
21928 bytes
Lines
788
Domain
Driver Families
Bucket
drivers/hwmon
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 max20730_fops = {
	.llseek = noop_llseek,
	.read = max20730_debugfs_read,
	.write = NULL,
	.open = simple_open,
};

static int max20730_init_debugfs(struct i2c_client *client,
				 struct max20730_data *data)
{
	int ret, i;
	struct dentry *debugfs;
	struct dentry *max20730_dir;
	struct max20730_debugfs_data *psu;

	ret = i2c_smbus_read_word_data(client, MAX20730_MFR_DEVSET2);
	if (ret < 0)
		return ret;
	data->mfr_devset2 = ret;

	ret = i2c_smbus_read_word_data(client, MAX20730_MFR_VOUT_MIN);
	if (ret < 0)
		return ret;
	data->mfr_voutmin = ret;

	psu = devm_kzalloc(&client->dev, sizeof(*psu), GFP_KERNEL);
	if (!psu)
		return -ENOMEM;
	psu->client = client;

	debugfs = pmbus_get_debugfs_dir(client);
	if (!debugfs)
		return -ENOENT;

	max20730_dir = debugfs_create_dir(client->name, debugfs);

	for (i = 0; i < MAX20730_DEBUGFS_NUM_ENTRIES; ++i)
		psu->debugfs_entries[i] = i;

	debugfs_create_file("vout_min", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MIN],
			    &max20730_fops);
	debugfs_create_file("frequency", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_FREQUENCY],
			    &max20730_fops);
	debugfs_create_file("power_good_delay", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_PG_DELAY],
			    &max20730_fops);
	debugfs_create_file("internal_gain", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_INTERNAL_GAIN],
			    &max20730_fops);
	debugfs_create_file("boot_voltage", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_BOOT_VOLTAGE],
			    &max20730_fops);
	debugfs_create_file("out_voltage_ramp_rate", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_OUT_V_RAMP_RATE],
			    &max20730_fops);
	debugfs_create_file("oc_protection_mode", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_OC_PROTECT_MODE],
			    &max20730_fops);
	debugfs_create_file("soft_start_timing", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_SS_TIMING],
			    &max20730_fops);
	debugfs_create_file("imax", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_IMAX],
			    &max20730_fops);
	debugfs_create_file("operation", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_OPERATION],
			    &max20730_fops);
	debugfs_create_file("on_off_config", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_ON_OFF_CONFIG],
			    &max20730_fops);
	debugfs_create_file("smbalert_mask", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_SMBALERT_MASK],
			    &max20730_fops);
	debugfs_create_file("vout_mode", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MODE],
			    &max20730_fops);
	debugfs_create_file("vout_command", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_COMMAND],
			    &max20730_fops);
	debugfs_create_file("vout_max", 0444, max20730_dir,
			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MAX],
			    &max20730_fops);

	return 0;
}
#else
static int max20730_init_debugfs(struct i2c_client *client,
				 struct max20730_data *data)

Annotation

Implementation Notes