Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0011ddfe authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (emc1403) Add support for EMC1404 and EMC1424



EMC1404 and EMC1424 are similar to EMC1403 and EMC1423,
but support an additional external temperature sensor.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 454aee17
Loading
Loading
Loading
Loading
+51 −8
Original line number Diff line number Diff line
@@ -21,7 +21,6 @@
 *
 * TODO
 *	-	cache alarm and critical limit registers
 *	-	add emc1404 support
 */

#include <linux/module.h>
@@ -41,6 +40,7 @@

struct thermal_data {
	struct i2c_client *client;
	const struct attribute_group *groups[3];
	struct mutex mutex;
	/*
	 * Cache the hyst value so we don't keep re-reading it. In theory
@@ -233,6 +233,22 @@ static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO,
static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO | S_IWUSR,
	show_hyst, store_hyst, 0x1A);

static SENSOR_DEVICE_ATTR(temp4_min, S_IRUGO | S_IWUSR,
	show_temp, store_temp, 0x2D);
static SENSOR_DEVICE_ATTR(temp4_max, S_IRUGO | S_IWUSR,
	show_temp, store_temp, 0x2C);
static SENSOR_DEVICE_ATTR(temp4_crit, S_IRUGO | S_IWUSR,
	show_temp, store_temp, 0x30);
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 0x2A);
static SENSOR_DEVICE_ATTR_2(temp4_min_alarm, S_IRUGO,
	show_bit, NULL, 0x36, 0x08);
static SENSOR_DEVICE_ATTR_2(temp4_max_alarm, S_IRUGO,
	show_bit, NULL, 0x35, 0x08);
static SENSOR_DEVICE_ATTR_2(temp4_crit_alarm, S_IRUGO,
	show_bit, NULL, 0x37, 0x08);
static SENSOR_DEVICE_ATTR(temp4_crit_hyst, S_IRUGO | S_IWUSR,
	show_hyst, store_hyst, 0x30);

static SENSOR_DEVICE_ATTR_2(power_state, S_IRUGO | S_IWUSR,
	show_bit, store_bit, 0x03, 0x40);

@@ -264,7 +280,26 @@ static struct attribute *emc1403_attrs[] = {
	&sensor_dev_attr_power_state.dev_attr.attr,
	NULL
};
ATTRIBUTE_GROUPS(emc1403);

static const struct attribute_group emc1403_group = {
	.attrs = emc1403_attrs,
};

static struct attribute *emc1404_attrs[] = {
	&sensor_dev_attr_temp4_min.dev_attr.attr,
	&sensor_dev_attr_temp4_max.dev_attr.attr,
	&sensor_dev_attr_temp4_crit.dev_attr.attr,
	&sensor_dev_attr_temp4_input.dev_attr.attr,
	&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
	&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
	&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
	&sensor_dev_attr_temp4_crit_hyst.dev_attr.attr,
	NULL
};

static const struct attribute_group emc1404_group = {
	.attrs = emc1404_attrs,
};

static int emc1403_detect(struct i2c_client *client,
			struct i2c_board_info *info)
@@ -284,10 +319,12 @@ static int emc1403_detect(struct i2c_client *client,
	case 0x23:
		strlcpy(info->type, "emc1423", I2C_NAME_SIZE);
		break;
	/*
	 * Note: 0x25 is the 1404 which is very similar and this
	 * driver could be extended
	 */
	case 0x25:
		strlcpy(info->type, "emc1404", I2C_NAME_SIZE);
		break;
	case 0x27:
		strlcpy(info->type, "emc1424", I2C_NAME_SIZE);
		break;
	default:
		return -ENODEV;
	}
@@ -314,13 +351,17 @@ static int emc1403_probe(struct i2c_client *client,
	mutex_init(&data->mutex);
	data->hyst_valid = jiffies - 1;		/* Expired */

	data->groups[0] = &emc1403_group;
	if (id->driver_data)
		data->groups[1] = &emc1404_group;

	hwmon_dev = hwmon_device_register_with_groups(&client->dev,
						      client->name, data,
						      emc1403_groups);
						      data->groups);
	if (IS_ERR(hwmon_dev))
		return PTR_ERR(hwmon_dev);

	dev_info(&client->dev, "EMC1403 Thermal chip found\n");
	dev_info(&client->dev, "%s Thermal chip found\n", id->name);
	return 0;
}

@@ -330,7 +371,9 @@ static const unsigned short emc1403_address_list[] = {

static const struct i2c_device_id emc1403_idtable[] = {
	{ "emc1403", 0 },
	{ "emc1404", 1 },
	{ "emc1423", 0 },
	{ "emc1424", 1 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, emc1403_idtable);