From: Il Han <corone.il.han@xxxxxxxxx>
The driver supports the Sensylink CTF2304.
Signed-off-by: Il Han <corone.il.han@xxxxxxxxx>
---
Documentation/hwmon/ctf2304.rst | 41 +++
drivers/hwmon/Kconfig | 10 +
drivers/hwmon/Makefile | 1 +
drivers/hwmon/ctf2304.c | 554 ++++++++++++++++++++++++++++++++
4 files changed, 606 insertions(+)
create mode 100644 Documentation/hwmon/ctf2304.rst
create mode 100644 drivers/hwmon/ctf2304.c
diff --git a/Documentation/hwmon/ctf2304.rst b/Documentation/hwmon/ctf2304.rst
new file mode 100644
index 000000000000..d0e9ef9ea52e
--- /dev/null
+++ b/Documentation/hwmon/ctf2304.rst
@@ -0,0 +1,41 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver ctf2304
+=====================
+
+Supported chips:
+
+ * Sensylink CTF2304
+
+ Prefix: 'ctf2304'
+
+ Addresses scanned: -
+
+ Datasheet:
+
+Author: Il Han <corone.il.han@xxxxxxxxx>
+
+
+Description
+-----------
+
+This driver implements support for the Sensylink CTF2304 chip.
+
+The CTF2304 controls the speeds of up to four fans using four independent
+PWM outputs with local and remote temperature and remote voltage sensing.
+
+
+Sysfs entries
+-------------
+
+================== === =======================================================
+fan[1-4]_input RO fan tachometer speed in RPM
+fan[1-4]_target RW desired fan speed in RPM
+fan[1-4]_div RW sets the RPM range of the fan.
+pwm[1-4]_enable RW regulator mode,
+ 0=auto temperature mode, 1=manual mode, 2=rpm mode
+pwm[1-4] RW read: current pwm duty cycle,
+ write: target pwm duty cycle (0-255)
+in[1-8]_input RO measured output voltage
+temp[1-9]_input RO measured temperature
+================== === =======================================================
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 5b3b76477b0e..da9fbb0f8af3 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -474,6 +474,16 @@ config SENSORS_CORSAIR_PSU
This driver can also be built as a module. If so, the module
will be called corsair-psu.
+config SENSORS_CTF2304
+ tristate "Sensylink CTF2304 sensor chip"
+ depends on I2C
+ help
+ If you say yes here you get support for PWM and Fan Controller
+ with temperature and voltage sensing.
+
+ This driver can also be built as a module. If so, the module
+ will be called ctf2304.
+
config SENSORS_DRIVETEMP
tristate "Hard disk drives with temperature sensors"
depends on SCSI && ATA
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 88712b5031c8..3742b52f032d 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_SENSORS_BT1_PVT) += bt1-pvt.o
obj-$(CONFIG_SENSORS_CORETEMP) += coretemp.o
obj-$(CONFIG_SENSORS_CORSAIR_CPRO) += corsair-cpro.o
obj-$(CONFIG_SENSORS_CORSAIR_PSU) += corsair-psu.o
+obj-$(CONFIG_SENSORS_CTF2304) += ctf2304.o
obj-$(CONFIG_SENSORS_DA9052_ADC)+= da9052-hwmon.o
obj-$(CONFIG_SENSORS_DA9055)+= da9055-hwmon.o
obj-$(CONFIG_SENSORS_DELL_SMM) += dell-smm-hwmon.o
diff --git a/drivers/hwmon/ctf2304.c b/drivers/hwmon/ctf2304.c
new file mode 100644
index 000000000000..5788740a57e5
--- /dev/null
+++ b/drivers/hwmon/ctf2304.c
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ctf2304.c - Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring.
+ *
+ * (C) 2023 by Il Han <corone.il.han@xxxxxxxxx>
+ */
+
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+/* CTF2304 registers */
+#define CTF2304_REG_LOCAL_TEMP 0x00
+#define CTF2304_REG_REMOTE_CHANNEL(ch) (0x01 + (ch))
+#define CTF2304_REG_TACH_COUNT(ch) (0x09 + (ch))
+#define CTF2304_REG_FAN_CONFIG1 0x10
+#define CTF2304_REG_FAN_CONFIG2 0x11
+#define CTF2304_REG_FAN_RPM_CTRL 0x18
+#define CTF2304_REG_PWMOUT(ch) (0x40 + (ch))
+#define CTF2304_REG_TARGET_COUNT(ch) (0x44 + (ch))
+
+/* Fan Configure1 register bits */
+#define CTF2304_FAN_CFG1_TRANGE 0x0400
+#define CTF2304_FAN_CFG1_MODE_MASK (0x7)
+#define CTF2304_FAN_CFG1_MODE_SHIFT 7
+
+/* Fan Configure2 register bits */
+#define CTF2304_FAN_CFG2_MODE_MASK(ch) (0x6 << (ch) * 4)
+#define CTF2304_FAN_CFG2_MODE_SHIFT(ch) (1 + (ch) * 4)
+#define CTF2304_FAN_CFG2_DCY_MODE 0
+#define CTF2304_FAN_CFG2_RPM_MODE 1
+#define CTF2304_FAN_CFG2_TEMP_MODE 2
+#define CTF2304_FAN_CFG2_MAX_MODE 3
+
+/* Fan RPM CTRL register bits */
+#define CTF2304_FAN_DIV_MASK(ch) (0x6 << (ch) * 4)
+#define CTF2304_FAN_DIV_SHIFT(ch) (1 + (ch) * 4)
+
+#define CTF2304_VCC 3300
+
+#define FAN_RPM_MIN 480
+#define FAN_RPM_MAX 1966080
+
+#define FAN_COUNT_REG_MAX 0xFFF
+
+#define TEMP_FROM_REG(reg) (((reg) * 1000) >> 8)
+#define VOLT_FROM_REG(reg, fs) ((((reg) >> 4) * (fs)) >> 12)
+#define DIV_FROM_REG(reg) (1 << (reg))
+#define DIV_TO_REG(div) ((div == 8) ? 0x3 : \
+ (div == 4) ? 0x2 : \
+ (div == 1) ? 0x0 : 0x1)
+#define RPM_FROM_REG(reg) (((reg) >> 4) ? \
+ ((32768 * 60) / ((reg) >> 4)) : \
+ FAN_RPM_MAX)
+#define RPM_TO_REG(rpm) ((rpm) ? \
+ ((32768 * 60) / (rpm)) : \
+ FAN_COUNT_REG_MAX)
+
+#define NR_CHANNEL 8
+#define NR_FAN_CHANNEL 4
+
+/*
+ * Client data (each client gets its own)
+ */
+struct ctf2304_data {
+ struct i2c_client *client;
+ struct mutex update_lock;
+ char valid; /* zero until following fields are valid */
+ unsigned long last_updated; /* in jiffies */
+
+ /* register values */
+ u16 local_temp;
+ u16 remote_channel[NR_CHANNEL];
+ u16 tach[NR_FAN_CHANNEL];
+ u16 fan_config1;
+ u16 fan_config2;
+ u16 fan_rpm_ctrl;
+ u16 pwm[NR_FAN_CHANNEL];
+ u16 target_count[NR_FAN_CHANNEL];
+};
+
+static struct ctf2304_data *ctf2304_update_device(struct device *dev)
+{
+ struct ctf2304_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int i;
+ int rv;
+
+ mutex_lock(&data->update_lock);
+
+ if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_LOCAL_TEMP);
+ if (rv >= 0)
+ data->local_temp = rv;
+
+ for (i = 0; i < NR_CHANNEL; i++) {
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_REMOTE_CHANNEL(i));
+ if (rv >= 0)
+ data->remote_channel[i] = rv;
+ }
+
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_FAN_CONFIG1);
+ if (rv >= 0)
+ data->fan_config1 = rv;
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_FAN_CONFIG2);
+ if (rv >= 0)
+ data->fan_config2 = rv;
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_FAN_RPM_CTRL);
+ if (rv >= 0)
+ data->fan_rpm_ctrl = rv;
+
+ for (i = 0; i < NR_FAN_CHANNEL; i++) {
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_TACH_COUNT(i));
+ if (rv >= 0)
+ data->tach[i] = rv;
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_PWMOUT(i));
+ if (rv >= 0)
+ data->pwm[i] = rv;
+ rv = i2c_smbus_read_word_swapped(client,
+ CTF2304_REG_TARGET_COUNT(i));
+ if (rv >= 0)
+ data->target_count[i] = rv;
+ }
+
+ data->last_updated = jiffies;
+ data->valid = true;
+ }
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+static int register_to_temp(u16 reg, u16 config)
+{
+ if (config & CTF2304_FAN_CFG1_TRANGE)
+ return TEMP_FROM_REG(reg & 0x7FF0) + ((reg >> 15) ? -64000:0);
+ else
+ return TEMP_FROM_REG(reg);
+}
+
+static ssize_t show_temp(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ u16 reg;
+
+ if (attr->index == 0)
+ reg = data->local_temp;
+ else
+ reg = data->remote_channel[attr->index-1];
+
+ return sprintf(buf, "%d\n", register_to_temp(reg, data->fan_config1));
+}
+
+static int get_full_scale(u16 config)
+{
+ int full_scale;
+ u8 bits;
+
+ bits = (config >> CTF2304_FAN_CFG1_MODE_SHIFT)
+ & CTF2304_FAN_CFG1_MODE_MASK;
+
+ if (bits == 0x0)
+ full_scale = 2560;
+ else if (bits == 0x1)
+ full_scale = CTF2304_VCC;
+ else if (bits == 0x2)
+ full_scale = 4096;
+ else if (bits == 0x3)
+ full_scale = 2048;
+ else if (bits == 0x4)
+ full_scale = 1024;
+ else if (bits == 0x5)
+ full_scale = 512;
+ else
+ full_scale = 256;
+
+ return full_scale;
+}
+
+static int register_to_volt(u16 reg, u16 config)
+{
+ int full_scale;
+
+ full_scale = get_full_scale(config);
+
+ return VOLT_FROM_REG(reg, full_scale);
+}
+
+static ssize_t show_voltage(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ int voltage;
+
+ voltage = register_to_volt(data->remote_channel[attr->index],
+ data->fan_config1);
+
+ return sprintf(buf, "%d\n", voltage);
+}
+
+static ssize_t get_fan(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ int rpm;
+
+ rpm = RPM_FROM_REG(data->tach[attr->index]);
+
+ return sprintf(buf, "%d\n", rpm);
+}
+
+static ssize_t get_fan_target(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ int rpm;
+
+ rpm = RPM_FROM_REG(data->target_count[attr->index]);
+
+ return sprintf(buf, "%d\n", rpm);
+}
+
+static ssize_t set_fan_target(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long rpm;
+ int target_count;
+ int err;
+
+ err = kstrtoul(buf, 10, &rpm);
+ if (err)
+ return err;
+
+ rpm = clamp_val(rpm, FAN_RPM_MIN, FAN_RPM_MAX);
+ target_count = RPM_TO_REG(rpm);
+ target_count = clamp_val(target_count, 0x1, 0xFFF);
+
+ mutex_lock(&data->update_lock);
+
+ data->target_count[attr->index] = target_count << 4;
+ i2c_smbus_write_word_swapped(client,
+ CTF2304_REG_TARGET_COUNT(attr->index),
+ data->target_count[attr->index]);
+
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t show_fan_div(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ u8 bits;
+
+ bits = (data->fan_rpm_ctrl & CTF2304_FAN_DIV_MASK(attr->index))
+ >> CTF2304_FAN_DIV_SHIFT(attr->index);
+
+ return sprintf(buf, "%d\n", DIV_FROM_REG(bits));
+}
+
+static ssize_t set_fan_div(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long div;
+ int err;
+
+ err = kstrtoul(buf, 10, &div);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+
+ data->fan_rpm_ctrl = (data->fan_rpm_ctrl
+ & ~CTF2304_FAN_DIV_MASK(attr->index))
+ | (DIV_TO_REG(div)
+ << CTF2304_FAN_DIV_SHIFT(attr->index));
+
+ i2c_smbus_write_word_swapped(client,
+ CTF2304_REG_FAN_RPM_CTRL, data->fan_rpm_ctrl);
+
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t get_pwm(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ int pwm;
+
+ pwm = data->pwm[attr->index] >> 8;
+
+ return sprintf(buf, "%d\n", pwm);
+}
+
+static ssize_t set_pwm(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long pwm;
+ int err;
+
+ err = kstrtoul(buf, 10, &pwm);
+ if (err)
+ return err;
+
+ pwm = clamp_val(pwm, 0, 255);
+
+ mutex_lock(&data->update_lock);
+
+ data->pwm[attr->index] = (data->pwm[attr->index] & 0xFF) | (pwm << 8);
+ i2c_smbus_write_word_swapped(client,
+ CTF2304_REG_PWMOUT(attr->index),
+ data->pwm[attr->index]);
+
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t get_pwm_enable(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = ctf2304_update_device(dev);
+ int config;
+ int mode;
+
+ config = (data->fan_config2 & CTF2304_FAN_CFG2_MODE_MASK(attr->index))
+ >> CTF2304_FAN_CFG2_MODE_SHIFT(attr->index);
+ if (config == CTF2304_FAN_CFG2_RPM_MODE)
+ mode = 2;
+ else if (config == CTF2304_FAN_CFG2_DCY_MODE)
+ mode = 1;
+ else
+ mode = 0;
+
+ return sprintf(buf, "%d\n", mode);
+}
+
+static ssize_t set_pwm_enable(struct device *dev,
+ struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct ctf2304_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long mode;
+ int err;
+
+ err = kstrtoul(buf, 10, &mode);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+
+ switch (mode) {
+ case 0:
+ data->fan_config2 =
+ (data->fan_config2
+ & ~CTF2304_FAN_CFG2_MODE_MASK(attr->index))
+ | (CTF2304_FAN_CFG2_TEMP_MODE
+ << CTF2304_FAN_CFG2_MODE_SHIFT(attr->index));
+ break;
+ case 1:
+ data->fan_config2 =
+ (data->fan_config2
+ & ~CTF2304_FAN_CFG2_MODE_MASK(attr->index))
+ | (CTF2304_FAN_CFG2_DCY_MODE
+ << CTF2304_FAN_CFG2_MODE_SHIFT(attr->index));
+ break;
+ case 2:
+ data->fan_config2 =
+ (data->fan_config2
+ & ~CTF2304_FAN_CFG2_MODE_MASK(attr->index))
+ | (CTF2304_FAN_CFG2_RPM_MODE
+ << CTF2304_FAN_CFG2_MODE_SHIFT(attr->index));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ i2c_smbus_write_word_swapped(client,
+ CTF2304_REG_FAN_CONFIG2, data->fan_config2);
+
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static SENSOR_DEVICE_ATTR(temp1_input, 0444, show_temp, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, 0444, show_temp, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp3_input, 0444, show_temp, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp4_input, 0444, show_temp, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp5_input, 0444, show_temp, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp6_input, 0444, show_temp, NULL, 5);
+static SENSOR_DEVICE_ATTR(temp7_input, 0444, show_temp, NULL, 6);
+static SENSOR_DEVICE_ATTR(temp8_input, 0444, show_temp, NULL, 7);
+static SENSOR_DEVICE_ATTR(temp9_input, 0444, show_temp, NULL, 8);
+static SENSOR_DEVICE_ATTR(in1_input, 0444, show_voltage, NULL, 0);
+static SENSOR_DEVICE_ATTR(in2_input, 0444, show_voltage, NULL, 1);
+static SENSOR_DEVICE_ATTR(in3_input, 0444, show_voltage, NULL, 2);
+static SENSOR_DEVICE_ATTR(in4_input, 0444, show_voltage, NULL, 3);
+static SENSOR_DEVICE_ATTR(in5_input, 0444, show_voltage, NULL, 4);
+static SENSOR_DEVICE_ATTR(in6_input, 0444, show_voltage, NULL, 5);
+static SENSOR_DEVICE_ATTR(in7_input, 0444, show_voltage, NULL, 6);
+static SENSOR_DEVICE_ATTR(in8_input, 0444, show_voltage, NULL, 7);
+static SENSOR_DEVICE_ATTR(fan1_input, 0444, get_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, 0444, get_fan, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan3_input, 0444, get_fan, NULL, 2);
+static SENSOR_DEVICE_ATTR(fan4_input, 0444, get_fan, NULL, 3);
+static SENSOR_DEVICE_ATTR(fan1_target, 0644,
+ get_fan_target, set_fan_target, 0);
+static SENSOR_DEVICE_ATTR(fan2_target, 0644,
+ get_fan_target, set_fan_target, 1);
+static SENSOR_DEVICE_ATTR(fan3_target, 0644,
+ get_fan_target, set_fan_target, 2);
+static SENSOR_DEVICE_ATTR(fan4_target, 0644,
+ get_fan_target, set_fan_target, 3);
+static SENSOR_DEVICE_ATTR(fan1_div, 0644, show_fan_div, set_fan_div, 0);
+static SENSOR_DEVICE_ATTR(fan2_div, 0644, show_fan_div, set_fan_div, 1);
+static SENSOR_DEVICE_ATTR(fan3_div, 0644, show_fan_div, set_fan_div, 2);
+static SENSOR_DEVICE_ATTR(fan4_div, 0644, show_fan_div, set_fan_div, 3);
+static SENSOR_DEVICE_ATTR(pwm1, 0644, get_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm2, 0644, get_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm3, 0644, get_pwm, set_pwm, 2);
+static SENSOR_DEVICE_ATTR(pwm4, 0644, get_pwm, set_pwm, 3);
+static SENSOR_DEVICE_ATTR(pwm1_enable, 0644,
+ get_pwm_enable, set_pwm_enable, 0);
+static SENSOR_DEVICE_ATTR(pwm2_enable, 0644,
+ get_pwm_enable, set_pwm_enable, 1);
+static SENSOR_DEVICE_ATTR(pwm3_enable, 0644,
+ get_pwm_enable, set_pwm_enable, 2);
+static SENSOR_DEVICE_ATTR(pwm4_enable, 0644,
+ get_pwm_enable, set_pwm_enable, 3);
+
+static struct attribute *ctf2304_attrs[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp4_input.dev_attr.attr,
+ &sensor_dev_attr_temp5_input.dev_attr.attr,
+ &sensor_dev_attr_temp6_input.dev_attr.attr,
+ &sensor_dev_attr_temp7_input.dev_attr.attr,
+ &sensor_dev_attr_temp8_input.dev_attr.attr,
+ &sensor_dev_attr_temp9_input.dev_attr.attr,
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in3_input.dev_attr.attr,
+ &sensor_dev_attr_in4_input.dev_attr.attr,
+ &sensor_dev_attr_in5_input.dev_attr.attr,
+ &sensor_dev_attr_in6_input.dev_attr.attr,
+ &sensor_dev_attr_in7_input.dev_attr.attr,
+ &sensor_dev_attr_in8_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan3_input.dev_attr.attr,
+ &sensor_dev_attr_fan4_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_target.dev_attr.attr,
+ &sensor_dev_attr_fan2_target.dev_attr.attr,
+ &sensor_dev_attr_fan3_target.dev_attr.attr,
+ &sensor_dev_attr_fan4_target.dev_attr.attr,
+ &sensor_dev_attr_fan1_div.dev_attr.attr,
+ &sensor_dev_attr_fan2_div.dev_attr.attr,
+ &sensor_dev_attr_fan3_div.dev_attr.attr,
+ &sensor_dev_attr_fan4_div.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm3.dev_attr.attr,
+ &sensor_dev_attr_pwm4.dev_attr.attr,
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm3_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm4_enable.dev_attr.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(ctf2304);
+
+static int ctf2304_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct ctf2304_data *data;
+ struct device *hwmon_dev;
+
+ data = devm_kzalloc(dev, sizeof(struct ctf2304_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ mutex_init(&data->update_lock);
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data,
+ ctf2304_groups);
+
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id ctf2304_id[] = {
+ { "ctf2304", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ctf2304_id);
+
+static struct i2c_driver ctf2304_driver = {
+ .class = I2C_CLASS_HWMON,
+ .probe = ctf2304_probe,
+ .driver = {
+ .name = "ctf2304",
+ },
+ .id_table = ctf2304_id,
+};
+
+module_i2c_driver(ctf2304_driver);
+
+MODULE_AUTHOR("Il Han <corone.il.han@xxxxxxxxx>");
+MODULE_DESCRIPTION("CTF2304 sensor driver");
+MODULE_LICENSE("GPL");
--
2.26.2
