Update hwmon init with info instead of group.
Also added additional attribute for fan i.e.,
fanY_pulse
pwmY_freq
Signed-off-by: Naresh Solanki <[email protected]>
---
drivers/hwmon/max6639.c | 536 ++++++++++++++++++++++++++--------------
1 file changed, 357 insertions(+), 179 deletions(-)
diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
index cbb595fe47aa..b757a85837e8 100644
--- a/drivers/hwmon/max6639.c
+++ b/drivers/hwmon/max6639.c
@@ -55,13 +55,17 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
#define MAX6639_GCONFIG_PWM_FREQ_HI 0x08
#define MAX6639_FAN_CONFIG1_PWM 0x80
-
+#define MAX6639_FAN_CONFIG3_FREQ_MASK 0x03
#define MAX6639_FAN_CONFIG3_THERM_FULL_SPEED 0x40
#define MAX6639_NUM_CHANNELS 2
static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 };
+/* Supported PWM frequency */
+static const unsigned int freq_table[] = { 20, 33, 50, 100, 5000, 8333, 12500,
+ 25000 };
+
#define FAN_FROM_REG(val, rpm_range) ((val) == 0 || (val) == 255 ? \
0 : (rpm_ranges[rpm_range] * 30) / (val))
#define TEMP_LIMIT_TO_REG(val) clamp_val((val) / 1000, 0, 255)
@@ -73,19 +77,16 @@ struct max6639_data {
struct regmap *regmap;
/* Register values initialized only once */
- u8 ppr; /* Pulses per rotation 0..3 for 1..4 ppr */
- u8 rpm_range; /* Index in above rpm_ranges table */
+ u8 ppr[MAX6639_NUM_CHANNELS]; /* Pulses per rotation 0..3 for 1..4 ppr */
+ u8 rpm_range[MAX6639_NUM_CHANNELS]; /* Index in above rpm_ranges table */
/* Optional regulator for FAN supply */
struct regulator *reg;
};
-static ssize_t temp_input_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_temp_read_input(struct device *dev, int channel, long *temp)
{
- long temp;
struct max6639_data *data = dev_get_drvdata(dev);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
unsigned int val;
int res;
@@ -93,251 +94,425 @@ static ssize_t temp_input_show(struct device *dev,
* Lock isn't needed as MAX6639_REG_TEMP wpnt change for at least 250ms after reading
* MAX6639_REG_TEMP_EXT
*/
- res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
+ res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
if (res < 0)
return res;
- temp = val >> 5;
- res = regmap_read(data->regmap, MAX6639_REG_TEMP(attr->index), &val);
+ *temp = val >> 5;
+ res = regmap_read(data->regmap, MAX6639_REG_TEMP(channel), &val);
if (res < 0)
return res;
- temp |= val << 3;
- temp *= 125;
+ *temp |= val << 3;
+ *temp *= 125;
- return sprintf(buf, "%ld\n", temp);
+ return res;
}
-static ssize_t temp_fault_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_temp_read_fault(struct device *dev, int channel, long *fault)
{
struct max6639_data *data = dev_get_drvdata(dev);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
unsigned int val;
int res;
- res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
- if (res < 0)
- return res;
+ res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
+ *fault = val & 1;
- return sprintf(buf, "%d\n", val & 1);
+ return res;
}
-static ssize_t temp_max_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_temp_read_max(struct device *dev, int channel, long *max)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
unsigned int val;
int res;
- res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index), &val);
- if (res < 0)
- return res;
+ res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(channel), &val);
+ *max = val * 1000;
- return sprintf(buf, "%d\n", (val * 1000));
+ return res;
}
-static ssize_t temp_max_store(struct device *dev,
- struct device_attribute *dev_attr,
- const char *buf, size_t count)
+static int max6639_temp_read_crit(struct device *dev, int channel, long *crit)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
- unsigned long val;
+ unsigned int val;
int res;
- res = kstrtoul(buf, 10, &val);
- if (res)
- return res;
+ res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), &val);
+ *crit = val * 1000;
- regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index),
- TEMP_LIMIT_TO_REG(val));
- return count;
+ return res;
}
-static ssize_t temp_crit_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_temp_read_emergency(struct device *dev, int channel, long *emerg)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
unsigned int val;
int res;
- res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index), &val);
- if (res < 0)
- return res;
+ res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(channel), &val);
+ *emerg = val * 1000;
- return sprintf(buf, "%d\n", (val * 1000));
+ return res;
}
-static ssize_t temp_crit_store(struct device *dev,
- struct device_attribute *dev_attr,
- const char *buf, size_t count)
+static int max6639_get_status(struct device *dev, unsigned int *status)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
- unsigned long val;
+ unsigned int val;
int res;
- res = kstrtoul(buf, 10, &val);
- if (res)
- return res;
+ res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
+ *status = val;
- regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index),
- TEMP_LIMIT_TO_REG(val));
- return count;
+ return res;
}
-static ssize_t temp_emergency_show(struct device *dev,
- struct device_attribute *dev_attr,
- char *buf)
+static int max6639_temp_set_max(struct max6639_data *data, int channel, unsigned long val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
- struct max6639_data *data = dev_get_drvdata(dev);
- unsigned int val;
int res;
- res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), &val);
- if (res < 0)
- return res;
-
- return sprintf(buf, "%d\n", (val * 1000));
+ res = regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(channel),
+ TEMP_LIMIT_TO_REG(val));
+ return res;
}
-static ssize_t temp_emergency_store(struct device *dev,
- struct device_attribute *dev_attr,
- const char *buf, size_t count)
+static int max6639_temp_set_crit(struct max6639_data *data, int channel, unsigned long val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
- struct max6639_data *data = dev_get_drvdata(dev);
- unsigned long val;
int res;
- res = kstrtoul(buf, 10, &val);
- if (res)
- return res;
+ res = regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
+
+ return res;
+}
+
+static int max6639_temp_set_emergency(struct max6639_data *data, int channel, unsigned long val)
+{
+ int res;
- regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), TEMP_LIMIT_TO_REG(val));
+ res = regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
- return count;
+ return res;
}
-static ssize_t pwm_show(struct device *dev, struct device_attribute *dev_attr,
- char *buf)
+static int max6639_read_fan(struct device *dev, u32 attr, int channel,
+ long *fan_val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
- unsigned int val;
- int res;
+ unsigned int val, res;
- res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), &val);
- if (res < 0)
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ switch (attr) {
+ case hwmon_fan_input:
+ res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(channel), &val);
+ *fan_val = FAN_FROM_REG(val, data->rpm_range[channel]);
+ return res;
+ case hwmon_fan_fault:
+ res = max6639_get_status(dev, &val);
+ *fan_val = !!(val & (2 >> channel));
return res;
+ case hwmon_fan_pulses:
+ *fan_val = data->ppr[channel];
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
- return sprintf(buf, "%d\n", val * 255 / 120);
+static int max6639_set_ppr(struct max6639_data *data, int channel, u8 ppr)
+{
+ return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr-- << 6);
}
-static ssize_t pwm_store(struct device *dev,
- struct device_attribute *dev_attr, const char *buf,
- size_t count)
+static int max6639_write_fan(struct device *dev, u32 attr, int channel,
+ long val)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
struct max6639_data *data = dev_get_drvdata(dev);
- unsigned long val;
- int res;
+ int err;
- res = kstrtoul(buf, 10, &val);
- if (res)
- return res;
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ switch (attr) {
+ case hwmon_fan_pulses:
+ if (val <= 0 || val > 5) {
+ dev_err(dev, "invalid pulses-per-revolution %ld. Valid range id 1 - 4.",
+ val);
+ return -EINVAL;
+ }
+ /* Set Fan pulse per revolution */
+ err = max6639_set_ppr(data, channel, val);
+ if (err)
+ dev_err(dev, "Failed to set pulses-per-revolution");
+ else
+ data->ppr[channel] = val;
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
- val = clamp_val(val, 0, 255);
+static umode_t max6639_fan_is_visible(const void *_data, u32 attr, int channel)
+{
+ struct max6639_data *data = (struct max6639_data *)_data;
- regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), val * 120 / 255);
+ if (IS_ERR(data))
+ return PTR_ERR(data);
- return count;
+ switch (attr) {
+ case hwmon_fan_input:
+ case hwmon_fan_fault:
+ return 0444;
+ case hwmon_fan_pulses:
+ return 0644;
+ default:
+ return 0;
+ }
}
-static ssize_t fan_input_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
+ long *pwm_val)
{
struct max6639_data *data = dev_get_drvdata(dev);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
- unsigned int val;
- int res;
-
- res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(attr->index), &val);
- if (res < 0)
+ unsigned int val, res;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ switch (attr) {
+ case hwmon_pwm_input:
+ res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
+ *pwm_val = val * 255 / 120;
+ return 0;
+ case hwmon_pwm_freq:
+ u8 x;
+
+ res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
+ if (res < 0)
+ return res;
+ x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
+
+ res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
+ if (res < 0)
+ return res;
+
+ if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
+ x |= 0x4;
+ x &= 0x7;
+ *pwm_val = freq_table[x];
return res;
-
- return sprintf(buf, "%d\n", FAN_FROM_REG(val, data->rpm_range));
+ default:
+ return -EOPNOTSUPP;
+ }
}
-static ssize_t alarm_show(struct device *dev,
- struct device_attribute *dev_attr, char *buf)
+static int max6639_write_pwm(struct device *dev, u32 attr, int channel,
+ long val)
{
struct max6639_data *data = dev_get_drvdata(dev);
- struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
- unsigned int val;
+ int err;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ switch (attr) {
+ case hwmon_pwm_input:
+ val = clamp_val(val, 0, 255);
+ err = regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(channel),
+ val * 120 / 255);
+ return err;
+ case hwmon_pwm_freq:
+ u8 x;
+
+ val = clamp_val(val, 0, 25000);
+ /* Chip supports limited number of frequency */
+ for (x = 0; x < sizeof(freq_table); x++)
+ if (val <= freq_table[x])
+ break;
+
+ err = regmap_update_bits(data->regmap, MAX6639_REG_FAN_CONFIG3(channel),
+ MAX6639_FAN_CONFIG3_FREQ_MASK, x);
+ if (err < 0)
+ return err;
+
+ if (x >> 2)
+ err = regmap_set_bits(data->regmap, MAX6639_REG_GCONFIG,
+ MAX6639_GCONFIG_PWM_FREQ_HI);
+ else
+ err = regmap_clear_bits(data->regmap, MAX6639_REG_GCONFIG,
+ MAX6639_GCONFIG_PWM_FREQ_HI);
+ return err;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t max6639_pwm_is_visible(const void *_data, u32 attr, int channel)
+{
+ struct max6639_data *data = (struct max6639_data *)_data;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ switch (attr) {
+ case hwmon_pwm_input:
+ case hwmon_pwm_freq:
+ return 0644;
+ default:
+ return 0;
+ }
+}
+
+static int max6639_read_temp(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ unsigned int status;
int res;
- res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
- if (res < 0)
+ switch (attr) {
+ case hwmon_temp_input:
+ res = max6639_temp_read_input(dev, channel, val);
+ return res;
+ case hwmon_temp_fault:
+ res = max6639_temp_read_fault(dev, channel, val);
return res;
+ case hwmon_temp_max:
+ res = max6639_temp_read_max(dev, channel, val);
+ return res;
+ case hwmon_temp_crit:
+ res = max6639_temp_read_crit(dev, channel, val);
+ return res;
+ case hwmon_temp_emergency:
+ res = max6639_temp_read_emergency(dev, channel, val);
+ return res;
+ case hwmon_temp_max_alarm:
+ res = max6639_get_status(dev, &status);
+ *val = !!(status & (0x08 >> channel));
+ return res;
+ case hwmon_temp_crit_alarm:
+ res = max6639_get_status(dev, &status);
+ *val = !!(status & (0x80 >> channel));
+ return res;
+ case hwmon_temp_emergency_alarm:
+ res = max6639_get_status(dev, &status);
+ *val = !!(status & (0x20 >> channel));
+ return res;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int max6639_write_temp(struct device *dev, u32 attr, int channel,
+ long val)
+{
+ struct max6639_data *data = dev_get_drvdata(dev);
+
+ switch (attr) {
+ case hwmon_temp_max:
+ return max6639_temp_set_max(data, channel, val);
+ case hwmon_temp_crit:
+ return max6639_temp_set_crit(data, channel, val);
+ case hwmon_temp_emergency:
+ return max6639_temp_set_emergency(data, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t max6639_temp_is_visible(const void *_data, u32 attr, int channel)
+{
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_fault:
+ case hwmon_temp_max_alarm:
+ case hwmon_temp_crit_alarm:
+ case hwmon_temp_emergency_alarm:
+ return 0444;
+ case hwmon_temp_max:
+ case hwmon_temp_crit:
+ case hwmon_temp_emergency:
+ return 0644;
+ default:
+ return 0;
+ }
+}
+
+static int max6639_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ switch (type) {
+ case hwmon_fan:
+ return max6639_read_fan(dev, attr, channel, val);
+ case hwmon_pwm:
+ return max6639_read_pwm(dev, attr, channel, val);
+ case hwmon_temp:
+ return max6639_read_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
- return sprintf(buf, "%d\n", !!(val & (1 << attr->index)));
+static int max6639_write(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long val)
+{
+ switch (type) {
+ case hwmon_fan:
+ return max6639_write_fan(dev, attr, channel, val);
+ case hwmon_pwm:
+ return max6639_write_pwm(dev, attr, channel, val);
+ case hwmon_temp:
+ return max6639_write_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
}
-static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
-static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
-static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0);
-static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1);
-static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
-static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
-static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp_crit, 0);
-static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp_crit, 1);
-static SENSOR_DEVICE_ATTR_RW(temp1_emergency, temp_emergency, 0);
-static SENSOR_DEVICE_ATTR_RW(temp2_emergency, temp_emergency, 1);
-static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
-static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
-static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
-static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
-static SENSOR_DEVICE_ATTR_RO(fan1_fault, alarm, 1);
-static SENSOR_DEVICE_ATTR_RO(fan2_fault, alarm, 0);
-static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 3);
-static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 2);
-static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 7);
-static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 6);
-static SENSOR_DEVICE_ATTR_RO(temp1_emergency_alarm, alarm, 5);
-static SENSOR_DEVICE_ATTR_RO(temp2_emergency_alarm, alarm, 4);
-
-
-static struct attribute *max6639_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp2_input.dev_attr.attr,
- &sensor_dev_attr_temp1_fault.dev_attr.attr,
- &sensor_dev_attr_temp2_fault.dev_attr.attr,
- &sensor_dev_attr_temp1_max.dev_attr.attr,
- &sensor_dev_attr_temp2_max.dev_attr.attr,
- &sensor_dev_attr_temp1_crit.dev_attr.attr,
- &sensor_dev_attr_temp2_crit.dev_attr.attr,
- &sensor_dev_attr_temp1_emergency.dev_attr.attr,
- &sensor_dev_attr_temp2_emergency.dev_attr.attr,
- &sensor_dev_attr_pwm1.dev_attr.attr,
- &sensor_dev_attr_pwm2.dev_attr.attr,
- &sensor_dev_attr_fan1_input.dev_attr.attr,
- &sensor_dev_attr_fan2_input.dev_attr.attr,
- &sensor_dev_attr_fan1_fault.dev_attr.attr,
- &sensor_dev_attr_fan2_fault.dev_attr.attr,
- &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
- &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
- &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
- &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
- &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
- &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
+static umode_t max6639_is_visible(const void *data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ switch (type) {
+ case hwmon_fan:
+ return max6639_fan_is_visible(data, attr, channel);
+ case hwmon_pwm:
+ return max6639_pwm_is_visible(data, attr, channel);
+ case hwmon_temp:
+ return max6639_temp_is_visible(data, attr, channel);
+ default:
+ return 0;
+ }
+}
+
+static const struct hwmon_channel_info * const max6639_info[] = {
+ HWMON_CHANNEL_INFO(fan,
+ HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES,
+ HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES),
+ HWMON_CHANNEL_INFO(pwm,
+ HWMON_PWM_INPUT | HWMON_PWM_FREQ,
+ HWMON_PWM_INPUT | HWMON_PWM_FREQ),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
+ HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
+ HWMON_T_EMERGENCY_ALARM,
+ HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
+ HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
+ HWMON_T_EMERGENCY_ALARM),
NULL
};
-ATTRIBUTE_GROUPS(max6639);
+
+static const struct hwmon_ops max6639_hwmon_ops = {
+ .is_visible = max6639_is_visible,
+ .read = max6639_read,
+ .write = max6639_write,
+};
+
+static const struct hwmon_chip_info max6639_chip_info = {
+ .ops = &max6639_hwmon_ops,
+ .info = max6639_info,
+};
/*
* returns respective index in rpm_ranges table
@@ -355,11 +530,6 @@ static int rpm_range_to_reg(int range)
return 1; /* default: 4000 RPM */
}
-static int max6639_set_ppr(struct max6639_data *data, u8 channel, u8 ppr)
-{
- return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr << 6);
-}
-
static int max6639_init_client(struct i2c_client *client,
struct max6639_data *data)
{
@@ -380,14 +550,16 @@ static int max6639_init_client(struct i2c_client *client,
ppr = max6639_info->ppr;
else
ppr = 2;
- ppr -= 1;
+
+ data->ppr[0] = ppr;
+ data->ppr[1] = ppr;
if (max6639_info)
rpm_range = rpm_range_to_reg(max6639_info->rpm_range);
- data->rpm_range = rpm_range;
+ data->rpm_range[0] = rpm_range;
+ data->rpm_range[1] = rpm_range;
for (i = 0; i < MAX6639_NUM_CHANNELS; i++) {
-
/* Set Fan pulse per revolution */
err = max6639_set_ppr(data, i, ppr);
if (err)
@@ -395,15 +567,17 @@ static int max6639_init_client(struct i2c_client *client,
/* Fans config PWM, RPM */
err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG1(i),
- MAX6639_FAN_CONFIG1_PWM | rpm_range);
+ MAX6639_FAN_CONFIG1_PWM | data->rpm_range[i]);
if (err)
return err;
/* Fans PWM polarity high by default */
- if (max6639_info && max6639_info->pwm_polarity == 0)
- err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
- else
- err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
+ if (max6639_info) {
+ if (max6639_info->pwm_polarity == 0)
+ err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
+ else
+ err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
+ }
if (err)
return err;
@@ -534,9 +708,13 @@ static int max6639_probe(struct i2c_client *client)
if (err < 0)
return err;
- hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
- data,
- max6639_groups);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ data, &max6639_chip_info,
+ NULL);
+
+ if (IS_ERR(hwmon_dev))
+ return dev_err_probe(dev, PTR_ERR(hwmon_dev),
+ "unable to register hwmon device\n");
return PTR_ERR_OR_ZERO(hwmon_dev);
}
base-commit: 5fbf8734fb36cf67339f599f0e51747a6aff690c
--
2.42.0
Hi Naresh,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 5fbf8734fb36cf67339f599f0e51747a6aff690c]
url: https://github.com/intel-lab-lkp/linux/commits/Naresh-Solanki/hwmon-max6639-Update-hwmon-init-using-info/20240528-172245
base: 5fbf8734fb36cf67339f599f0e51747a6aff690c
patch link: https://lore.kernel.org/r/20240528091808.863702-1-naresh.solanki%409elements.com
patch subject: [PATCH v2] hwmon: (max6639) : Update hwmon init using info
config: i386-buildonly-randconfig-003-20240528 (https://download.01.org/0day-ci/archive/20240528/[email protected]/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240528/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All warnings (new ones prefixed by >>):
>> drivers/hwmon/max6639.c:291:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
291 | u8 x;
| ^
drivers/hwmon/max6639.c:328:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
328 | u8 x;
| ^
2 warnings generated.
vim +291 drivers/hwmon/max6639.c
275
276 static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
277 long *pwm_val)
278 {
279 struct max6639_data *data = dev_get_drvdata(dev);
280 unsigned int val, res;
281
282 if (IS_ERR(data))
283 return PTR_ERR(data);
284
285 switch (attr) {
286 case hwmon_pwm_input:
287 res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
288 *pwm_val = val * 255 / 120;
289 return 0;
290 case hwmon_pwm_freq:
> 291 u8 x;
292
293 res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
294 if (res < 0)
295 return res;
296 x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
297
298 res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
299 if (res < 0)
300 return res;
301
302 if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
303 x |= 0x4;
304 x &= 0x7;
305 *pwm_val = freq_table[x];
306 return res;
307 default:
308 return -EOPNOTSUPP;
309 }
310 }
311
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Naresh,
kernel test robot noticed the following build errors:
[auto build test ERROR on 5fbf8734fb36cf67339f599f0e51747a6aff690c]
url: https://github.com/intel-lab-lkp/linux/commits/Naresh-Solanki/hwmon-max6639-Update-hwmon-init-using-info/20240528-172245
base: 5fbf8734fb36cf67339f599f0e51747a6aff690c
patch link: https://lore.kernel.org/r/20240528091808.863702-1-naresh.solanki%409elements.com
patch subject: [PATCH v2] hwmon: (max6639) : Update hwmon init using info
config: i386-randconfig-015-20240528 (https://download.01.org/0day-ci/archive/20240528/[email protected]/config)
compiler: gcc-10 (Ubuntu 10.5.0-1ubuntu1) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240528/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All errors (new ones prefixed by >>):
drivers/hwmon/max6639.c: In function 'max6639_read_pwm':
>> drivers/hwmon/max6639.c:291:3: error: a label can only be part of a statement and a declaration is not a statement
291 | u8 x;
| ^~
drivers/hwmon/max6639.c: In function 'max6639_write_pwm':
drivers/hwmon/max6639.c:328:3: error: a label can only be part of a statement and a declaration is not a statement
328 | u8 x;
| ^~
vim +291 drivers/hwmon/max6639.c
275
276 static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
277 long *pwm_val)
278 {
279 struct max6639_data *data = dev_get_drvdata(dev);
280 unsigned int val, res;
281
282 if (IS_ERR(data))
283 return PTR_ERR(data);
284
285 switch (attr) {
286 case hwmon_pwm_input:
287 res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
288 *pwm_val = val * 255 / 120;
289 return 0;
290 case hwmon_pwm_freq:
> 291 u8 x;
292
293 res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
294 if (res < 0)
295 return res;
296 x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
297
298 res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
299 if (res < 0)
300 return res;
301
302 if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
303 x |= 0x4;
304 x &= 0x7;
305 *pwm_val = freq_table[x];
306 return res;
307 default:
308 return -EOPNOTSUPP;
309 }
310 }
311
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
On 5/28/24 02:18, Naresh Solanki wrote:
> Update hwmon init with info instead of group.
A more detailed description which doesn't require insider knowledge
would be helpful.
> Also added additional attribute for fan i.e.,
> fanY_pulse
> pwmY_freq
Separate patches for additional attributes, please.
>
> Signed-off-by: Naresh Solanki <[email protected]>
> ---
> drivers/hwmon/max6639.c | 536 ++++++++++++++++++++++++++--------------
> 1 file changed, 357 insertions(+), 179 deletions(-)
>
> diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
> index cbb595fe47aa..b757a85837e8 100644
> --- a/drivers/hwmon/max6639.c
> +++ b/drivers/hwmon/max6639.c
> @@ -55,13 +55,17 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
> #define MAX6639_GCONFIG_PWM_FREQ_HI 0x08
>
> #define MAX6639_FAN_CONFIG1_PWM 0x80
> -
> +#define MAX6639_FAN_CONFIG3_FREQ_MASK 0x03
> #define MAX6639_FAN_CONFIG3_THERM_FULL_SPEED 0x40
>
> #define MAX6639_NUM_CHANNELS 2
>
> static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 };
>
> +/* Supported PWM frequency */
> +static const unsigned int freq_table[] = { 20, 33, 50, 100, 5000, 8333, 12500,
> + 25000 };
> +
> #define FAN_FROM_REG(val, rpm_range) ((val) == 0 || (val) == 255 ? \
> 0 : (rpm_ranges[rpm_range] * 30) / (val))
> #define TEMP_LIMIT_TO_REG(val) clamp_val((val) / 1000, 0, 255)
> @@ -73,19 +77,16 @@ struct max6639_data {
> struct regmap *regmap;
>
> /* Register values initialized only once */
> - u8 ppr; /* Pulses per rotation 0..3 for 1..4 ppr */
> - u8 rpm_range; /* Index in above rpm_ranges table */
> + u8 ppr[MAX6639_NUM_CHANNELS]; /* Pulses per rotation 0..3 for 1..4 ppr */
> + u8 rpm_range[MAX6639_NUM_CHANNELS]; /* Index in above rpm_ranges table */
>
> /* Optional regulator for FAN supply */
> struct regulator *reg;
> };
>
> -static ssize_t temp_input_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_temp_read_input(struct device *dev, int channel, long *temp)
> {
> - long temp;
> struct max6639_data *data = dev_get_drvdata(dev);
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> unsigned int val;
> int res;
>
> @@ -93,251 +94,425 @@ static ssize_t temp_input_show(struct device *dev,
> * Lock isn't needed as MAX6639_REG_TEMP wpnt change for at least 250ms after reading
> * MAX6639_REG_TEMP_EXT
> */
> - res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
> + res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
> if (res < 0)
> return res;
>
> - temp = val >> 5;
> - res = regmap_read(data->regmap, MAX6639_REG_TEMP(attr->index), &val);
> + *temp = val >> 5;
> + res = regmap_read(data->regmap, MAX6639_REG_TEMP(channel), &val);
> if (res < 0)
> return res;
>
> - temp |= val << 3;
> - temp *= 125;
> + *temp |= val << 3;
> + *temp *= 125;
>
> - return sprintf(buf, "%ld\n", temp);
> + return res;
return 0;
because res is known to be 0 here.
> }
>
> -static ssize_t temp_fault_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_temp_read_fault(struct device *dev, int channel, long *fault)
> {
> struct max6639_data *data = dev_get_drvdata(dev);
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> unsigned int val;
> int res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
> - if (res < 0)
> - return res;
> + res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
Please always handle errors first before assigning results, as implemented in
max6639_temp_read_input().
if (res < 0)
return res;
*fault = val & 1;
return 0;
> + *fault = val & 1;
>
> - return sprintf(buf, "%d\n", val & 1);
> + return res;
> }
>
> -static ssize_t temp_max_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_temp_read_max(struct device *dev, int channel, long *max)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> unsigned int val;
> int res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index), &val);
> - if (res < 0)
> - return res;
> + res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(channel), &val);
> + *max = val * 1000;
>
> - return sprintf(buf, "%d\n", (val * 1000));
> + return res;
> }
>
> -static ssize_t temp_max_store(struct device *dev,
> - struct device_attribute *dev_attr,
> - const char *buf, size_t count)
> +static int max6639_temp_read_crit(struct device *dev, int channel, long *crit)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned long val;
> + unsigned int val;
> int res;
>
> - res = kstrtoul(buf, 10, &val);
> - if (res)
> - return res;
> + res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), &val);
> + *crit = val * 1000;
>
> - regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index),
> - TEMP_LIMIT_TO_REG(val));
> - return count;
> + return res;
> }
>
> -static ssize_t temp_crit_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_temp_read_emergency(struct device *dev, int channel, long *emerg)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> unsigned int val;
> int res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index), &val);
> - if (res < 0)
> - return res;
> + res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(channel), &val);
> + *emerg = val * 1000;
>
> - return sprintf(buf, "%d\n", (val * 1000));
> + return res;
> }
>
> -static ssize_t temp_crit_store(struct device *dev,
> - struct device_attribute *dev_attr,
> - const char *buf, size_t count)
> +static int max6639_get_status(struct device *dev, unsigned int *status)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned long val;
> + unsigned int val;
> int res;
>
> - res = kstrtoul(buf, 10, &val);
> - if (res)
> - return res;
> + res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
> + *status = val;
>
> - regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index),
> - TEMP_LIMIT_TO_REG(val));
> - return count;
> + return res;
> }
>
> -static ssize_t temp_emergency_show(struct device *dev,
> - struct device_attribute *dev_attr,
> - char *buf)
> +static int max6639_temp_set_max(struct max6639_data *data, int channel, unsigned long val)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> - struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned int val;
> int res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), &val);
> - if (res < 0)
> - return res;
> -
> - return sprintf(buf, "%d\n", (val * 1000));
> + res = regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(channel),
> + TEMP_LIMIT_TO_REG(val));
> + return res;
> }
>
> -static ssize_t temp_emergency_store(struct device *dev,
> - struct device_attribute *dev_attr,
> - const char *buf, size_t count)
> +static int max6639_temp_set_crit(struct max6639_data *data, int channel, unsigned long val)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> - struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned long val;
> int res;
>
> - res = kstrtoul(buf, 10, &val);
> - if (res)
> - return res;
> + res = regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
> +
> + return res;
> +}
> +
> +static int max6639_temp_set_emergency(struct max6639_data *data, int channel, unsigned long val)
> +{
> + int res;
>
> - regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), TEMP_LIMIT_TO_REG(val));
> + res = regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
>
> - return count;
> + return res;
> }
>
> -static ssize_t pwm_show(struct device *dev, struct device_attribute *dev_attr,
> - char *buf)
> +static int max6639_read_fan(struct device *dev, u32 attr, int channel,
> + long *fan_val)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned int val;
> - int res;
> + unsigned int val, res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), &val);
> - if (res < 0)
> + if (IS_ERR(data))
> + return PTR_ERR(data);
> +
> + switch (attr) {
> + case hwmon_fan_input:
> + res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(channel), &val);
> + *fan_val = FAN_FROM_REG(val, data->rpm_range[channel]);
> + return res;
> + case hwmon_fan_fault:
> + res = max6639_get_status(dev, &val);
> + *fan_val = !!(val & (2 >> channel));
!!BIT(1 - channel)
in these cases might be easier to read than the shifts.
> return res;
> + case hwmon_fan_pulses:
> + *fan_val = data->ppr[channel];
> + return 0;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
>
> - return sprintf(buf, "%d\n", val * 255 / 120);
> +static int max6639_set_ppr(struct max6639_data *data, int channel, u8 ppr)
> +{
> + return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr-- << 6);
The -- here is confusing. I thoink it would be better to handle it in the calling code.
> }
>
> -static ssize_t pwm_store(struct device *dev,
> - struct device_attribute *dev_attr, const char *buf,
> - size_t count)
> +static int max6639_write_fan(struct device *dev, u32 attr, int channel,
> + long val)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> struct max6639_data *data = dev_get_drvdata(dev);
> - unsigned long val;
> - int res;
> + int err;
>
> - res = kstrtoul(buf, 10, &val);
> - if (res)
> - return res;
> + if (IS_ERR(data))
> + return PTR_ERR(data);
> +
> + switch (attr) {
> + case hwmon_fan_pulses:
> + if (val <= 0 || val > 5) {
> + dev_err(dev, "invalid pulses-per-revolution %ld. Valid range id 1 - 4.",
> + val);
No such error messages as result to user input, please.
> + return -EINVAL;
> + }
> + /* Set Fan pulse per revolution */
> + err = max6639_set_ppr(data, channel, val);
> + if (err)
> + dev_err(dev, "Failed to set pulses-per-revolution");
If this is an error, return it.
> + else
> + data->ppr[channel] = val;
> + return 0;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
>
> - val = clamp_val(val, 0, 255);
> +static umode_t max6639_fan_is_visible(const void *_data, u32 attr, int channel)
> +{
> + struct max6639_data *data = (struct max6639_data *)_data;
>
> - regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), val * 120 / 255);
> + if (IS_ERR(data))
> + return PTR_ERR(data);
>
> - return count;
> + switch (attr) {
> + case hwmon_fan_input:
> + case hwmon_fan_fault:
> + return 0444;
> + case hwmon_fan_pulses:
> + return 0644;
> + default:
> + return 0;
> + }
> }
>
> -static ssize_t fan_input_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
> + long *pwm_val)
> {
> struct max6639_data *data = dev_get_drvdata(dev);
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> - unsigned int val;
> - int res;
> -
> - res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(attr->index), &val);
> - if (res < 0)
> + unsigned int val, res;
> +
> + if (IS_ERR(data))
> + return PTR_ERR(data);
> +
> + switch (attr) {
> + case hwmon_pwm_input:
> + res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
> + *pwm_val = val * 255 / 120;
> + return 0;
> + case hwmon_pwm_freq:
> + u8 x;
> +
Please avoid.
> + res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
> + if (res < 0)
> + return res;
> + x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
> +
> + res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
> + if (res < 0)
> + return res;
> +
> + if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
> + x |= 0x4;
> + x &= 0x7;
> + *pwm_val = freq_table[x];
> return res;
> -
> - return sprintf(buf, "%d\n", FAN_FROM_REG(val, data->rpm_range));
> + default:
> + return -EOPNOTSUPP;
> + }
> }
>
> -static ssize_t alarm_show(struct device *dev,
> - struct device_attribute *dev_attr, char *buf)
> +static int max6639_write_pwm(struct device *dev, u32 attr, int channel,
> + long val)
> {
> struct max6639_data *data = dev_get_drvdata(dev);
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> - unsigned int val;
> + int err;
> +
> + if (IS_ERR(data))
> + return PTR_ERR(data);
> +
> + switch (attr) {
> + case hwmon_pwm_input:
> + val = clamp_val(val, 0, 255);
> + err = regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(channel),
> + val * 120 / 255);
> + return err;
> + case hwmon_pwm_freq:
> + u8 x;
> +
> + val = clamp_val(val, 0, 25000);
> + /* Chip supports limited number of frequency */
frequencies, but the comment is really not necessary.
> + for (x = 0; x < sizeof(freq_table); x++)
> + if (val <= freq_table[x])
> + break;
> +
Use find_closest()
> + err = regmap_update_bits(data->regmap, MAX6639_REG_FAN_CONFIG3(channel),
> + MAX6639_FAN_CONFIG3_FREQ_MASK, x);
> + if (err < 0)
> + return err;
> +
> + if (x >> 2)
> + err = regmap_set_bits(data->regmap, MAX6639_REG_GCONFIG,
> + MAX6639_GCONFIG_PWM_FREQ_HI);
> + else
> + err = regmap_clear_bits(data->regmap, MAX6639_REG_GCONFIG,
> + MAX6639_GCONFIG_PWM_FREQ_HI);
> + return err;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static umode_t max6639_pwm_is_visible(const void *_data, u32 attr, int channel)
> +{
> + struct max6639_data *data = (struct max6639_data *)_data;
> +
> + if (IS_ERR(data))
> + return PTR_ERR(data);
Pointless assignment and check. The parameter isn't used.
> +
> + switch (attr) {
> + case hwmon_pwm_input:
> + case hwmon_pwm_freq:
> + return 0644;
> + default:
> + return 0;
> + }
> +}
> +
> +static int max6639_read_temp(struct device *dev, u32 attr, int channel,
> + long *val)
> +{
> + unsigned int status;
> int res;
>
> - res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
> - if (res < 0)
> + switch (attr) {
> + case hwmon_temp_input:
> + res = max6639_temp_read_input(dev, channel, val);
> + return res;
> + case hwmon_temp_fault:
> + res = max6639_temp_read_fault(dev, channel, val);
> return res;
> + case hwmon_temp_max:
> + res = max6639_temp_read_max(dev, channel, val);
> + return res;
> + case hwmon_temp_crit:
> + res = max6639_temp_read_crit(dev, channel, val);
> + return res;
> + case hwmon_temp_emergency:
> + res = max6639_temp_read_emergency(dev, channel, val);
> + return res;
> + case hwmon_temp_max_alarm:
> + res = max6639_get_status(dev, &status);
> + *val = !!(status & (0x08 >> channel));
BIT(3 - channel) ?
> + return res;
> + case hwmon_temp_crit_alarm:
> + res = max6639_get_status(dev, &status);
> + *val = !!(status & (0x80 >> channel));
> + return res;
> + case hwmon_temp_emergency_alarm:
> + res = max6639_get_status(dev, &status);
> + *val = !!(status & (0x20 >> channel));
> + return res;
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static int max6639_write_temp(struct device *dev, u32 attr, int channel,
> + long val)
> +{
> + struct max6639_data *data = dev_get_drvdata(dev);
> +
> + switch (attr) {
> + case hwmon_temp_max:
> + return max6639_temp_set_max(data, channel, val);
> + case hwmon_temp_crit:
> + return max6639_temp_set_crit(data, channel, val);
> + case hwmon_temp_emergency:
> + return max6639_temp_set_emergency(data, channel, val);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
> +
> +static umode_t max6639_temp_is_visible(const void *_data, u32 attr, int channel)
> +{
> + switch (attr) {
> + case hwmon_temp_input:
> + case hwmon_temp_fault:
> + case hwmon_temp_max_alarm:
> + case hwmon_temp_crit_alarm:
> + case hwmon_temp_emergency_alarm:
> + return 0444;
> + case hwmon_temp_max:
> + case hwmon_temp_crit:
> + case hwmon_temp_emergency:
> + return 0644;
> + default:
> + return 0;
> + }
> +}
> +
> +static int max6639_read(struct device *dev, enum hwmon_sensor_types type,
> + u32 attr, int channel, long *val)
> +{
> + switch (type) {
> + case hwmon_fan:
> + return max6639_read_fan(dev, attr, channel, val);
> + case hwmon_pwm:
> + return max6639_read_pwm(dev, attr, channel, val);
> + case hwmon_temp:
> + return max6639_read_temp(dev, attr, channel, val);
> + default:
> + return -EOPNOTSUPP;
> + }
> +}
>
> - return sprintf(buf, "%d\n", !!(val & (1 << attr->index)));
> +static int max6639_write(struct device *dev, enum hwmon_sensor_types type,
> + u32 attr, int channel, long val)
> +{
> + switch (type) {
> + case hwmon_fan:
> + return max6639_write_fan(dev, attr, channel, val);
> + case hwmon_pwm:
> + return max6639_write_pwm(dev, attr, channel, val);
> + case hwmon_temp:
> + return max6639_write_temp(dev, attr, channel, val);
> + default:
> + return -EOPNOTSUPP;
> + }
> }
>
> -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
> -static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
> -static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0);
> -static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1);
> -static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
> -static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
> -static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp_crit, 0);
> -static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp_crit, 1);
> -static SENSOR_DEVICE_ATTR_RW(temp1_emergency, temp_emergency, 0);
> -static SENSOR_DEVICE_ATTR_RW(temp2_emergency, temp_emergency, 1);
> -static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
> -static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
> -static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
> -static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
> -static SENSOR_DEVICE_ATTR_RO(fan1_fault, alarm, 1);
> -static SENSOR_DEVICE_ATTR_RO(fan2_fault, alarm, 0);
> -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 3);
> -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 2);
> -static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 7);
> -static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 6);
> -static SENSOR_DEVICE_ATTR_RO(temp1_emergency_alarm, alarm, 5);
> -static SENSOR_DEVICE_ATTR_RO(temp2_emergency_alarm, alarm, 4);
> -
> -
> -static struct attribute *max6639_attrs[] = {
> - &sensor_dev_attr_temp1_input.dev_attr.attr,
> - &sensor_dev_attr_temp2_input.dev_attr.attr,
> - &sensor_dev_attr_temp1_fault.dev_attr.attr,
> - &sensor_dev_attr_temp2_fault.dev_attr.attr,
> - &sensor_dev_attr_temp1_max.dev_attr.attr,
> - &sensor_dev_attr_temp2_max.dev_attr.attr,
> - &sensor_dev_attr_temp1_crit.dev_attr.attr,
> - &sensor_dev_attr_temp2_crit.dev_attr.attr,
> - &sensor_dev_attr_temp1_emergency.dev_attr.attr,
> - &sensor_dev_attr_temp2_emergency.dev_attr.attr,
> - &sensor_dev_attr_pwm1.dev_attr.attr,
> - &sensor_dev_attr_pwm2.dev_attr.attr,
> - &sensor_dev_attr_fan1_input.dev_attr.attr,
> - &sensor_dev_attr_fan2_input.dev_attr.attr,
> - &sensor_dev_attr_fan1_fault.dev_attr.attr,
> - &sensor_dev_attr_fan2_fault.dev_attr.attr,
> - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
> - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
> - &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
> - &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
> - &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
> - &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
> +static umode_t max6639_is_visible(const void *data,
> + enum hwmon_sensor_types type,
> + u32 attr, int channel)
> +{
> + switch (type) {
> + case hwmon_fan:
> + return max6639_fan_is_visible(data, attr, channel);
> + case hwmon_pwm:
> + return max6639_pwm_is_visible(data, attr, channel);
> + case hwmon_temp:
> + return max6639_temp_is_visible(data, attr, channel);
> + default:
> + return 0;
> + }
> +}
> +
> +static const struct hwmon_channel_info * const max6639_info[] = {
> + HWMON_CHANNEL_INFO(fan,
> + HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES,
> + HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES),
> + HWMON_CHANNEL_INFO(pwm,
> + HWMON_PWM_INPUT | HWMON_PWM_FREQ,
> + HWMON_PWM_INPUT | HWMON_PWM_FREQ),
> + HWMON_CHANNEL_INFO(temp,
> + HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
> + HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
> + HWMON_T_EMERGENCY_ALARM,
> + HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
> + HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
> + HWMON_T_EMERGENCY_ALARM),
> NULL
> };
> -ATTRIBUTE_GROUPS(max6639);
> +
> +static const struct hwmon_ops max6639_hwmon_ops = {
> + .is_visible = max6639_is_visible,
> + .read = max6639_read,
> + .write = max6639_write,
> +};
> +
> +static const struct hwmon_chip_info max6639_chip_info = {
> + .ops = &max6639_hwmon_ops,
> + .info = max6639_info,
> +};
>
> /*
> * returns respective index in rpm_ranges table
> @@ -355,11 +530,6 @@ static int rpm_range_to_reg(int range)
> return 1; /* default: 4000 RPM */
> }
>
> -static int max6639_set_ppr(struct max6639_data *data, u8 channel, u8 ppr)
> -{
> - return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr << 6);
> -}
> -
> static int max6639_init_client(struct i2c_client *client,
> struct max6639_data *data)
> {
> @@ -380,14 +550,16 @@ static int max6639_init_client(struct i2c_client *client,
> ppr = max6639_info->ppr;
> else
> ppr = 2;
> - ppr -= 1;
> +
> + data->ppr[0] = ppr;
> + data->ppr[1] = ppr;
>
I think we should drop support for max6639_platform_data entirely.
It isn't used anywhere in the kernel and obviously incomplete.
> if (max6639_info)
> rpm_range = rpm_range_to_reg(max6639_info->rpm_range);
> - data->rpm_range = rpm_range;
> + data->rpm_range[0] = rpm_range;
> + data->rpm_range[1] = rpm_range;
>
> for (i = 0; i < MAX6639_NUM_CHANNELS; i++) {
> -
> /* Set Fan pulse per revolution */
> err = max6639_set_ppr(data, i, ppr);
> if (err)
> @@ -395,15 +567,17 @@ static int max6639_init_client(struct i2c_client *client,
>
> /* Fans config PWM, RPM */
> err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG1(i),
> - MAX6639_FAN_CONFIG1_PWM | rpm_range);
> + MAX6639_FAN_CONFIG1_PWM | data->rpm_range[i]);
> if (err)
> return err;
>
> /* Fans PWM polarity high by default */
> - if (max6639_info && max6639_info->pwm_polarity == 0)
> - err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
> - else
> - err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
> + if (max6639_info) {
> + if (max6639_info->pwm_polarity == 0)
> + err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
> + else
> + err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
> + }
> if (err)
> return err;
>
> @@ -534,9 +708,13 @@ static int max6639_probe(struct i2c_client *client)
> if (err < 0)
> return err;
>
> - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
> - data,
> - max6639_groups);
> + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
> + data, &max6639_chip_info,
> + NULL);
> +
> + if (IS_ERR(hwmon_dev))
> + return dev_err_probe(dev, PTR_ERR(hwmon_dev),
> + "unable to register hwmon device\n");
This is a functional change unrelated to the conversion, and I am not
in favor of it. Please refrain from making such changes.
Thanks,
Guenter
Hi Naresh,
kernel test robot noticed the following build errors:
[auto build test ERROR on 5fbf8734fb36cf67339f599f0e51747a6aff690c]
url: https://github.com/intel-lab-lkp/linux/commits/Naresh-Solanki/hwmon-max6639-Update-hwmon-init-using-info/20240528-172245
base: 5fbf8734fb36cf67339f599f0e51747a6aff690c
patch link: https://lore.kernel.org/r/20240528091808.863702-1-naresh.solanki%409elements.com
patch subject: [PATCH v2] hwmon: (max6639) : Update hwmon init using info
config: arm64-randconfig-002-20240528 (https://download.01.org/0day-ci/archive/20240528/[email protected]/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240528/[email protected]/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All errors (new ones prefixed by >>):
>> drivers/hwmon/max6639.c:291:3: error: expected expression
u8 x;
^
>> drivers/hwmon/max6639.c:296:3: error: use of undeclared identifier 'x'
x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
^
drivers/hwmon/max6639.c:303:4: error: use of undeclared identifier 'x'
x |= 0x4;
^
drivers/hwmon/max6639.c:304:3: error: use of undeclared identifier 'x'
x &= 0x7;
^
drivers/hwmon/max6639.c:305:25: error: use of undeclared identifier 'x'
*pwm_val = freq_table[x];
^
drivers/hwmon/max6639.c:328:3: error: expected expression
u8 x;
^
drivers/hwmon/max6639.c:332:8: error: use of undeclared identifier 'x'
for (x = 0; x < sizeof(freq_table); x++)
^
drivers/hwmon/max6639.c:332:15: error: use of undeclared identifier 'x'
for (x = 0; x < sizeof(freq_table); x++)
^
drivers/hwmon/max6639.c:332:39: error: use of undeclared identifier 'x'
for (x = 0; x < sizeof(freq_table); x++)
^
drivers/hwmon/max6639.c:333:26: error: use of undeclared identifier 'x'
if (val <= freq_table[x])
^
drivers/hwmon/max6639.c:337:38: error: use of undeclared identifier 'x'
MAX6639_FAN_CONFIG3_FREQ_MASK, x);
^
drivers/hwmon/max6639.c:341:7: error: use of undeclared identifier 'x'
if (x >> 2)
^
12 errors generated.
vim +291 drivers/hwmon/max6639.c
275
276 static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
277 long *pwm_val)
278 {
279 struct max6639_data *data = dev_get_drvdata(dev);
280 unsigned int val, res;
281
282 if (IS_ERR(data))
283 return PTR_ERR(data);
284
285 switch (attr) {
286 case hwmon_pwm_input:
287 res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
288 *pwm_val = val * 255 / 120;
289 return 0;
290 case hwmon_pwm_freq:
> 291 u8 x;
292
293 res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
294 if (res < 0)
295 return res;
> 296 x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
297
298 res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
299 if (res < 0)
300 return res;
301
302 if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
303 x |= 0x4;
304 x &= 0x7;
305 *pwm_val = freq_table[x];
306 return res;
307 default:
308 return -EOPNOTSUPP;
309 }
310 }
311
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Guenter,
On Tue, 28 May 2024 at 20:05, Guenter Roeck <[email protected]> wrote:
>
> On 5/28/24 02:18, Naresh Solanki wrote:
> > Update hwmon init with info instead of group.
>
> A more detailed description which doesn't require insider knowledge
> would be helpful.
Sure. Will update as:
hwmon: (max6639) : Update hwmon init using info structure
Update hwmon init with info instead of group. The hwmon info structure
is more flexible to describe sensor attributes & easy to maintain.
>
> > Also added additional attribute for fan i.e.,
> > fanY_pulse
> > pwmY_freq
>
> Separate patches for additional attributes, please.
Ack.
>
> >
> > Signed-off-by: Naresh Solanki <[email protected]>
> > ---
> > drivers/hwmon/max6639.c | 536 ++++++++++++++++++++++++++--------------
> > 1 file changed, 357 insertions(+), 179 deletions(-)
> >
> > diff --git a/drivers/hwmon/max6639.c b/drivers/hwmon/max6639.c
> > index cbb595fe47aa..b757a85837e8 100644
> > --- a/drivers/hwmon/max6639.c
> > +++ b/drivers/hwmon/max6639.c
> > @@ -55,13 +55,17 @@ static const unsigned short normal_i2c[] = { 0x2c, 0x2e, 0x2f, I2C_CLIENT_END };
> > #define MAX6639_GCONFIG_PWM_FREQ_HI 0x08
> >
> > #define MAX6639_FAN_CONFIG1_PWM 0x80
> > -
> > +#define MAX6639_FAN_CONFIG3_FREQ_MASK 0x03
> > #define MAX6639_FAN_CONFIG3_THERM_FULL_SPEED 0x40
> >
> > #define MAX6639_NUM_CHANNELS 2
> >
> > static const int rpm_ranges[] = { 2000, 4000, 8000, 16000 };
> >
> > +/* Supported PWM frequency */
> > +static const unsigned int freq_table[] = { 20, 33, 50, 100, 5000, 8333, 12500,
> > + 25000 };
> > +
> > #define FAN_FROM_REG(val, rpm_range) ((val) == 0 || (val) == 255 ? \
> > 0 : (rpm_ranges[rpm_range] * 30) / (val))
> > #define TEMP_LIMIT_TO_REG(val) clamp_val((val) / 1000, 0, 255)
> > @@ -73,19 +77,16 @@ struct max6639_data {
> > struct regmap *regmap;
> >
> > /* Register values initialized only once */
> > - u8 ppr; /* Pulses per rotation 0..3 for 1..4 ppr */
> > - u8 rpm_range; /* Index in above rpm_ranges table */
> > + u8 ppr[MAX6639_NUM_CHANNELS]; /* Pulses per rotation 0..3 for 1..4 ppr */
> > + u8 rpm_range[MAX6639_NUM_CHANNELS]; /* Index in above rpm_ranges table */
> >
> > /* Optional regulator for FAN supply */
> > struct regulator *reg;
> > };
> >
> > -static ssize_t temp_input_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_temp_read_input(struct device *dev, int channel, long *temp)
> > {
> > - long temp;
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > unsigned int val;
> > int res;
> >
> > @@ -93,251 +94,425 @@ static ssize_t temp_input_show(struct device *dev,
> > * Lock isn't needed as MAX6639_REG_TEMP wpnt change for at least 250ms after reading
> > * MAX6639_REG_TEMP_EXT
> > */
> > - res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
> > + res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
> > if (res < 0)
> > return res;
> >
> > - temp = val >> 5;
> > - res = regmap_read(data->regmap, MAX6639_REG_TEMP(attr->index), &val);
> > + *temp = val >> 5;
> > + res = regmap_read(data->regmap, MAX6639_REG_TEMP(channel), &val);
> > if (res < 0)
> > return res;
> >
> > - temp |= val << 3;
> > - temp *= 125;
> > + *temp |= val << 3;
> > + *temp *= 125;
> >
> > - return sprintf(buf, "%ld\n", temp);
> > + return res;
>
> return 0;
>
> because res is known to be 0 here.
Sure.
>
> > }
> >
> > -static ssize_t temp_fault_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_temp_read_fault(struct device *dev, int channel, long *fault)
> > {
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > unsigned int val;
> > int res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(attr->index), &val);
> > - if (res < 0)
> > - return res;
> > + res = regmap_read(data->regmap, MAX6639_REG_TEMP_EXT(channel), &val);
>
> Please always handle errors first before assigning results, as implemented in
> max6639_temp_read_input().
>
> if (res < 0)
> return res;
>
> *fault = val & 1;
>
> return 0;
>
Ack
> > + *fault = val & 1;
> >
> > - return sprintf(buf, "%d\n", val & 1);
> > + return res;
> > }
> >
> > -static ssize_t temp_max_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_temp_read_max(struct device *dev, int channel, long *max)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > unsigned int val;
> > int res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index), &val);
> > - if (res < 0)
> > - return res;
> > + res = regmap_read(data->regmap, MAX6639_REG_THERM_LIMIT(channel), &val);
> > + *max = val * 1000;
> >
> > - return sprintf(buf, "%d\n", (val * 1000));
> > + return res;
> > }
> >
> > -static ssize_t temp_max_store(struct device *dev,
> > - struct device_attribute *dev_attr,
> > - const char *buf, size_t count)
> > +static int max6639_temp_read_crit(struct device *dev, int channel, long *crit)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned long val;
> > + unsigned int val;
> > int res;
> >
> > - res = kstrtoul(buf, 10, &val);
> > - if (res)
> > - return res;
> > + res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), &val);
> > + *crit = val * 1000;
> >
> > - regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(attr->index),
> > - TEMP_LIMIT_TO_REG(val));
> > - return count;
> > + return res;
> > }
> >
> > -static ssize_t temp_crit_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_temp_read_emergency(struct device *dev, int channel, long *emerg)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > unsigned int val;
> > int res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index), &val);
> > - if (res < 0)
> > - return res;
> > + res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(channel), &val);
> > + *emerg = val * 1000;
> >
> > - return sprintf(buf, "%d\n", (val * 1000));
> > + return res;
> > }
> >
> > -static ssize_t temp_crit_store(struct device *dev,
> > - struct device_attribute *dev_attr,
> > - const char *buf, size_t count)
> > +static int max6639_get_status(struct device *dev, unsigned int *status)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned long val;
> > + unsigned int val;
> > int res;
> >
> > - res = kstrtoul(buf, 10, &val);
> > - if (res)
> > - return res;
> > + res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
> > + *status = val;
> >
> > - regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(attr->index),
> > - TEMP_LIMIT_TO_REG(val));
> > - return count;
> > + return res;
> > }
> >
> > -static ssize_t temp_emergency_show(struct device *dev,
> > - struct device_attribute *dev_attr,
> > - char *buf)
> > +static int max6639_temp_set_max(struct max6639_data *data, int channel, unsigned long val)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > - struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned int val;
> > int res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), &val);
> > - if (res < 0)
> > - return res;
> > -
> > - return sprintf(buf, "%d\n", (val * 1000));
> > + res = regmap_write(data->regmap, MAX6639_REG_THERM_LIMIT(channel),
> > + TEMP_LIMIT_TO_REG(val));
> > + return res;
> > }
> >
> > -static ssize_t temp_emergency_store(struct device *dev,
> > - struct device_attribute *dev_attr,
> > - const char *buf, size_t count)
> > +static int max6639_temp_set_crit(struct max6639_data *data, int channel, unsigned long val)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > - struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned long val;
> > int res;
> >
> > - res = kstrtoul(buf, 10, &val);
> > - if (res)
> > - return res;
> > + res = regmap_write(data->regmap, MAX6639_REG_ALERT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
> > +
> > + return res;
> > +}
> > +
> > +static int max6639_temp_set_emergency(struct max6639_data *data, int channel, unsigned long val)
> > +{
> > + int res;
> >
> > - regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(attr->index), TEMP_LIMIT_TO_REG(val));
> > + res = regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
> >
> > - return count;
> > + return res;
> > }
> >
> > -static ssize_t pwm_show(struct device *dev, struct device_attribute *dev_attr,
> > - char *buf)
> > +static int max6639_read_fan(struct device *dev, u32 attr, int channel,
> > + long *fan_val)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned int val;
> > - int res;
> > + unsigned int val, res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), &val);
> > - if (res < 0)
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
> > +
> > + switch (attr) {
> > + case hwmon_fan_input:
> > + res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(channel), &val);
> > + *fan_val = FAN_FROM_REG(val, data->rpm_range[channel]);
> > + return res;
> > + case hwmon_fan_fault:
> > + res = max6639_get_status(dev, &val);
> > + *fan_val = !!(val & (2 >> channel));
>
> !!BIT(1 - channel)
>
> in these cases might be easier to read than the shifts.
>
Ack. Will update all such instance accordingly.
> > return res;
> > + case hwmon_fan_pulses:
> > + *fan_val = data->ppr[channel];
> > + return 0;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> >
> > - return sprintf(buf, "%d\n", val * 255 / 120);
> > +static int max6639_set_ppr(struct max6639_data *data, int channel, u8 ppr)
> > +{
> > + return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr-- << 6);
>
> The -- here is confusing. I thoink it would be better to handle it in the calling code.
>
I want to avoid caller adjusting value based on hw as far as possible.
Is it ok to add a comment here instead like:
/* Decrement the PPR value and shift left by 6 to match the register format */
Please let me know what you feel.
> > }
> >
> > -static ssize_t pwm_store(struct device *dev,
> > - struct device_attribute *dev_attr, const char *buf,
> > - size_t count)
> > +static int max6639_write_fan(struct device *dev, u32 attr, int channel,
> > + long val)
> > {
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - unsigned long val;
> > - int res;
> > + int err;
> >
> > - res = kstrtoul(buf, 10, &val);
> > - if (res)
> > - return res;
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
> > +
> > + switch (attr) {
> > + case hwmon_fan_pulses:
> > + if (val <= 0 || val > 5) {
> > + dev_err(dev, "invalid pulses-per-revolution %ld. Valid range id 1 - 4.",
> > + val);
>
> No such error messages as result to user input, please.
>
Ack
> > + return -EINVAL;
> > + }
> > + /* Set Fan pulse per revolution */
> > + err = max6639_set_ppr(data, channel, val);
> > + if (err)
> > + dev_err(dev, "Failed to set pulses-per-revolution");
>
> If this is an error, return it.
>
Ack
> > + else
> > + data->ppr[channel] = val;
> > + return 0;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> >
> > - val = clamp_val(val, 0, 255);
> > +static umode_t max6639_fan_is_visible(const void *_data, u32 attr, int channel)
> > +{
> > + struct max6639_data *data = (struct max6639_data *)_data;
> >
> > - regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(attr->index), val * 120 / 255);
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
> >
> > - return count;
> > + switch (attr) {
> > + case hwmon_fan_input:
> > + case hwmon_fan_fault:
> > + return 0444;
> > + case hwmon_fan_pulses:
> > + return 0644;
> > + default:
> > + return 0;
> > + }
> > }
> >
> > -static ssize_t fan_input_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_read_pwm(struct device *dev, u32 attr, int channel,
> > + long *pwm_val)
> > {
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > - unsigned int val;
> > - int res;
> > -
> > - res = regmap_read(data->regmap, MAX6639_REG_FAN_CNT(attr->index), &val);
> > - if (res < 0)
> > + unsigned int val, res;
> > +
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
> > +
> > + switch (attr) {
> > + case hwmon_pwm_input:
> > + res = regmap_read(data->regmap, MAX6639_REG_TARGTDUTY(channel), &val);
> > + *pwm_val = val * 255 / 120;
> > + return 0;
> > + case hwmon_pwm_freq:
> > + u8 x;
> > +
>
> Please avoid.
>
Ack
> > + res = regmap_read(data->regmap, MAX6639_REG_FAN_CONFIG3(channel), &val);
> > + if (res < 0)
> > + return res;
> > + x = val & MAX6639_FAN_CONFIG3_FREQ_MASK;
> > +
> > + res = regmap_read(data->regmap, MAX6639_REG_GCONFIG, &val);
> > + if (res < 0)
> > + return res;
> > +
> > + if (val & MAX6639_GCONFIG_PWM_FREQ_HI)
> > + x |= 0x4;
> > + x &= 0x7;
> > + *pwm_val = freq_table[x];
> > return res;
> > -
> > - return sprintf(buf, "%d\n", FAN_FROM_REG(val, data->rpm_range));
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > }
> >
> > -static ssize_t alarm_show(struct device *dev,
> > - struct device_attribute *dev_attr, char *buf)
> > +static int max6639_write_pwm(struct device *dev, u32 attr, int channel,
> > + long val)
> > {
> > struct max6639_data *data = dev_get_drvdata(dev);
> > - struct sensor_device_attribute *attr = to_sensor_dev_attr(dev_attr);
> > - unsigned int val;
> > + int err;
> > +
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
> > +
> > + switch (attr) {
> > + case hwmon_pwm_input:
> > + val = clamp_val(val, 0, 255);
> > + err = regmap_write(data->regmap, MAX6639_REG_TARGTDUTY(channel),
> > + val * 120 / 255);
> > + return err;
> > + case hwmon_pwm_freq:
> > + u8 x;
> > +
> > + val = clamp_val(val, 0, 25000);
> > + /* Chip supports limited number of frequency */
>
> frequencies, but the comment is really not necessary.
>
> > + for (x = 0; x < sizeof(freq_table); x++)
> > + if (val <= freq_table[x])
> > + break;
> > +
>
> Use find_closest()
>
Ack. Will update as:
i = find_closest(val, freq_table, ARRAY_SIZE(freq_table));
> > + err = regmap_update_bits(data->regmap, MAX6639_REG_FAN_CONFIG3(channel),
> > + MAX6639_FAN_CONFIG3_FREQ_MASK, x);
> > + if (err < 0)
> > + return err;
> > +
> > + if (x >> 2)
> > + err = regmap_set_bits(data->regmap, MAX6639_REG_GCONFIG,
> > + MAX6639_GCONFIG_PWM_FREQ_HI);
> > + else
> > + err = regmap_clear_bits(data->regmap, MAX6639_REG_GCONFIG,
> > + MAX6639_GCONFIG_PWM_FREQ_HI);
> > + return err;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> > +
> > +static umode_t max6639_pwm_is_visible(const void *_data, u32 attr, int channel)
> > +{
> > + struct max6639_data *data = (struct max6639_data *)_data;
> > +
> > + if (IS_ERR(data))
> > + return PTR_ERR(data);
>
> Pointless assignment and check. The parameter isn't used.
>
Ack. Will be removed.
> > +
> > + switch (attr) {
> > + case hwmon_pwm_input:
> > + case hwmon_pwm_freq:
> > + return 0644;
> > + default:
> > + return 0;
> > + }
> > +}
> > +
> > +static int max6639_read_temp(struct device *dev, u32 attr, int channel,
> > + long *val)
> > +{
> > + unsigned int status;
> > int res;
> >
> > - res = regmap_read(data->regmap, MAX6639_REG_STATUS, &val);
> > - if (res < 0)
> > + switch (attr) {
> > + case hwmon_temp_input:
> > + res = max6639_temp_read_input(dev, channel, val);
> > + return res;
> > + case hwmon_temp_fault:
> > + res = max6639_temp_read_fault(dev, channel, val);
> > return res;
> > + case hwmon_temp_max:
> > + res = max6639_temp_read_max(dev, channel, val);
> > + return res;
> > + case hwmon_temp_crit:
> > + res = max6639_temp_read_crit(dev, channel, val);
> > + return res;
> > + case hwmon_temp_emergency:
> > + res = max6639_temp_read_emergency(dev, channel, val);
> > + return res;
> > + case hwmon_temp_max_alarm:
> > + res = max6639_get_status(dev, &status);
> > + *val = !!(status & (0x08 >> channel));
>
> BIT(3 - channel) ?
>
Ack
> > + return res;
> > + case hwmon_temp_crit_alarm:
> > + res = max6639_get_status(dev, &status);
> > + *val = !!(status & (0x80 >> channel));
> > + return res;
> > + case hwmon_temp_emergency_alarm:
> > + res = max6639_get_status(dev, &status);
> > + *val = !!(status & (0x20 >> channel));
> > + return res;
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> > +
> > +static int max6639_write_temp(struct device *dev, u32 attr, int channel,
> > + long val)
> > +{
> > + struct max6639_data *data = dev_get_drvdata(dev);
> > +
> > + switch (attr) {
> > + case hwmon_temp_max:
> > + return max6639_temp_set_max(data, channel, val);
> > + case hwmon_temp_crit:
> > + return max6639_temp_set_crit(data, channel, val);
> > + case hwmon_temp_emergency:
> > + return max6639_temp_set_emergency(data, channel, val);
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> > +
> > +static umode_t max6639_temp_is_visible(const void *_data, u32 attr, int channel)
> > +{
> > + switch (attr) {
> > + case hwmon_temp_input:
> > + case hwmon_temp_fault:
> > + case hwmon_temp_max_alarm:
> > + case hwmon_temp_crit_alarm:
> > + case hwmon_temp_emergency_alarm:
> > + return 0444;
> > + case hwmon_temp_max:
> > + case hwmon_temp_crit:
> > + case hwmon_temp_emergency:
> > + return 0644;
> > + default:
> > + return 0;
> > + }
> > +}
> > +
> > +static int max6639_read(struct device *dev, enum hwmon_sensor_types type,
> > + u32 attr, int channel, long *val)
> > +{
> > + switch (type) {
> > + case hwmon_fan:
> > + return max6639_read_fan(dev, attr, channel, val);
> > + case hwmon_pwm:
> > + return max6639_read_pwm(dev, attr, channel, val);
> > + case hwmon_temp:
> > + return max6639_read_temp(dev, attr, channel, val);
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > +}
> >
> > - return sprintf(buf, "%d\n", !!(val & (1 << attr->index)));
> > +static int max6639_write(struct device *dev, enum hwmon_sensor_types type,
> > + u32 attr, int channel, long val)
> > +{
> > + switch (type) {
> > + case hwmon_fan:
> > + return max6639_write_fan(dev, attr, channel, val);
> > + case hwmon_pwm:
> > + return max6639_write_pwm(dev, attr, channel, val);
> > + case hwmon_temp:
> > + return max6639_write_temp(dev, attr, channel, val);
> > + default:
> > + return -EOPNOTSUPP;
> > + }
> > }
> >
> > -static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0);
> > -static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1);
> > -static SENSOR_DEVICE_ATTR_RO(temp1_fault, temp_fault, 0);
> > -static SENSOR_DEVICE_ATTR_RO(temp2_fault, temp_fault, 1);
> > -static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_max, 0);
> > -static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_max, 1);
> > -static SENSOR_DEVICE_ATTR_RW(temp1_crit, temp_crit, 0);
> > -static SENSOR_DEVICE_ATTR_RW(temp2_crit, temp_crit, 1);
> > -static SENSOR_DEVICE_ATTR_RW(temp1_emergency, temp_emergency, 0);
> > -static SENSOR_DEVICE_ATTR_RW(temp2_emergency, temp_emergency, 1);
> > -static SENSOR_DEVICE_ATTR_RW(pwm1, pwm, 0);
> > -static SENSOR_DEVICE_ATTR_RW(pwm2, pwm, 1);
> > -static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0);
> > -static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1);
> > -static SENSOR_DEVICE_ATTR_RO(fan1_fault, alarm, 1);
> > -static SENSOR_DEVICE_ATTR_RO(fan2_fault, alarm, 0);
> > -static SENSOR_DEVICE_ATTR_RO(temp1_max_alarm, alarm, 3);
> > -static SENSOR_DEVICE_ATTR_RO(temp2_max_alarm, alarm, 2);
> > -static SENSOR_DEVICE_ATTR_RO(temp1_crit_alarm, alarm, 7);
> > -static SENSOR_DEVICE_ATTR_RO(temp2_crit_alarm, alarm, 6);
> > -static SENSOR_DEVICE_ATTR_RO(temp1_emergency_alarm, alarm, 5);
> > -static SENSOR_DEVICE_ATTR_RO(temp2_emergency_alarm, alarm, 4);
> > -
> > -
> > -static struct attribute *max6639_attrs[] = {
> > - &sensor_dev_attr_temp1_input.dev_attr.attr,
> > - &sensor_dev_attr_temp2_input.dev_attr.attr,
> > - &sensor_dev_attr_temp1_fault.dev_attr.attr,
> > - &sensor_dev_attr_temp2_fault.dev_attr.attr,
> > - &sensor_dev_attr_temp1_max.dev_attr.attr,
> > - &sensor_dev_attr_temp2_max.dev_attr.attr,
> > - &sensor_dev_attr_temp1_crit.dev_attr.attr,
> > - &sensor_dev_attr_temp2_crit.dev_attr.attr,
> > - &sensor_dev_attr_temp1_emergency.dev_attr.attr,
> > - &sensor_dev_attr_temp2_emergency.dev_attr.attr,
> > - &sensor_dev_attr_pwm1.dev_attr.attr,
> > - &sensor_dev_attr_pwm2.dev_attr.attr,
> > - &sensor_dev_attr_fan1_input.dev_attr.attr,
> > - &sensor_dev_attr_fan2_input.dev_attr.attr,
> > - &sensor_dev_attr_fan1_fault.dev_attr.attr,
> > - &sensor_dev_attr_fan2_fault.dev_attr.attr,
> > - &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
> > - &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
> > - &sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
> > - &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
> > - &sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
> > - &sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
> > +static umode_t max6639_is_visible(const void *data,
> > + enum hwmon_sensor_types type,
> > + u32 attr, int channel)
> > +{
> > + switch (type) {
> > + case hwmon_fan:
> > + return max6639_fan_is_visible(data, attr, channel);
> > + case hwmon_pwm:
> > + return max6639_pwm_is_visible(data, attr, channel);
> > + case hwmon_temp:
> > + return max6639_temp_is_visible(data, attr, channel);
> > + default:
> > + return 0;
> > + }
> > +}
> > +
> > +static const struct hwmon_channel_info * const max6639_info[] = {
> > + HWMON_CHANNEL_INFO(fan,
> > + HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES,
> > + HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_PULSES),
> > + HWMON_CHANNEL_INFO(pwm,
> > + HWMON_PWM_INPUT | HWMON_PWM_FREQ,
> > + HWMON_PWM_INPUT | HWMON_PWM_FREQ),
> > + HWMON_CHANNEL_INFO(temp,
> > + HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
> > + HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
> > + HWMON_T_EMERGENCY_ALARM,
> > + HWMON_T_INPUT | HWMON_T_FAULT | HWMON_T_MAX | HWMON_T_MAX_ALARM |
> > + HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY |
> > + HWMON_T_EMERGENCY_ALARM),
> > NULL
> > };
> > -ATTRIBUTE_GROUPS(max6639);
> > +
> > +static const struct hwmon_ops max6639_hwmon_ops = {
> > + .is_visible = max6639_is_visible,
> > + .read = max6639_read,
> > + .write = max6639_write,
> > +};
> > +
> > +static const struct hwmon_chip_info max6639_chip_info = {
> > + .ops = &max6639_hwmon_ops,
> > + .info = max6639_info,
> > +};
> >
> > /*
> > * returns respective index in rpm_ranges table
> > @@ -355,11 +530,6 @@ static int rpm_range_to_reg(int range)
> > return 1; /* default: 4000 RPM */
> > }
> >
> > -static int max6639_set_ppr(struct max6639_data *data, u8 channel, u8 ppr)
> > -{
> > - return regmap_write(data->regmap, MAX6639_REG_FAN_PPR(channel), ppr << 6);
> > -}
> > -
> > static int max6639_init_client(struct i2c_client *client,
> > struct max6639_data *data)
> > {
> > @@ -380,14 +550,16 @@ static int max6639_init_client(struct i2c_client *client,
> > ppr = max6639_info->ppr;
> > else
> > ppr = 2;
> > - ppr -= 1;
> > +
> > + data->ppr[0] = ppr;
> > + data->ppr[1] = ppr;
> >
>
> I think we should drop support for max6639_platform_data entirely.
> It isn't used anywhere in the kernel and obviously incomplete.
>
Ack. I'll work on it and submit patch next week after testing.
> > if (max6639_info)
> > rpm_range = rpm_range_to_reg(max6639_info->rpm_range);
> > - data->rpm_range = rpm_range;
> > + data->rpm_range[0] = rpm_range;
> > + data->rpm_range[1] = rpm_range;
> >
> > for (i = 0; i < MAX6639_NUM_CHANNELS; i++) {
> > -
> > /* Set Fan pulse per revolution */
> > err = max6639_set_ppr(data, i, ppr);
> > if (err)
> > @@ -395,15 +567,17 @@ static int max6639_init_client(struct i2c_client *client,
> >
> > /* Fans config PWM, RPM */
> > err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG1(i),
> > - MAX6639_FAN_CONFIG1_PWM | rpm_range);
> > + MAX6639_FAN_CONFIG1_PWM | data->rpm_range[i]);
> > if (err)
> > return err;
> >
> > /* Fans PWM polarity high by default */
> > - if (max6639_info && max6639_info->pwm_polarity == 0)
> > - err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
> > - else
> > - err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
> > + if (max6639_info) {
> > + if (max6639_info->pwm_polarity == 0)
> > + err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x00);
> > + else
> > + err = regmap_write(data->regmap, MAX6639_REG_FAN_CONFIG2a(i), 0x02);
> > + }
> > if (err)
> > return err;
> >
> > @@ -534,9 +708,13 @@ static int max6639_probe(struct i2c_client *client)
> > if (err < 0)
> > return err;
> >
> > - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
> > - data,
> > - max6639_groups);
> > + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
> > + data, &max6639_chip_info,
> > + NULL);
> > +
> > + if (IS_ERR(hwmon_dev))
> > + return dev_err_probe(dev, PTR_ERR(hwmon_dev),
> > + "unable to register hwmon device\n");
>
> This is a functional change unrelated to the conversion, and I am not
> in favor of it. Please refrain from making such changes.
Ack.
Regards,
Naresh
>
> Thanks,
> Guenter
>