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hwmon: w83627ehf updates
Add control of fan minimum turn-on output levels, decoupling it from the fan turn-off output level. Add control of rate of change of fan output level. These in turn allow lower turn-off rotor speed and smoother transitions for better thermal and acoustic control authority. Add support for constant fan speed and proportional-response operations modes. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com> Cc: Jean Delvare <khali@linux-fr.org> Cc: David Hubbard <david.c.hubbard@gmail.com> Cc: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Daniel J Blueman
Linus Torvalds
parent
e40d6eaa79
commit
41e9a06236
@ -81,8 +81,14 @@ pwm[1-4] - this file stores PWM duty cycle or DC value (fan speed) in range:
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0 (stop) to 255 (full)
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pwm[1-4]_enable - this file controls mode of fan/temperature control:
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* 1 Manual Mode, write to pwm file any value 0-255 (full speed)
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* 2 Thermal Cruise
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* 1 Manual mode, write to pwm file any value 0-255 (full speed)
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* 2 "Thermal Cruise" mode
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* 3 "Fan Speed Cruise" mode
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* 4 "Smart Fan III" mode
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pwm[1-4]_mode - controls if output is PWM or DC level
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* 0 DC output (0 - 12v)
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* 1 PWM output
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Thermal Cruise mode
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-------------------
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@ -5,6 +5,7 @@
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Copyright (C) 2006 Yuan Mu (Winbond),
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Rudolf Marek <r.marek@assembler.cz>
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David Hubbard <david.c.hubbard@gmail.com>
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Daniel J Blueman <daniel.blueman@gmail.com>
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Shamelessly ripped from the w83627hf driver
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Copyright (C) 2003 Mark Studebaker
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@ -177,12 +178,15 @@ static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 };
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#define W83627EHF_REG_ALARM3 0x45B
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/* SmartFan registers */
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#define W83627EHF_REG_FAN_STEPUP_TIME 0x0f
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#define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e
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/* DC or PWM output fan configuration */
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static const u8 W83627EHF_REG_PWM_ENABLE[] = {
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0x04, /* SYS FAN0 output mode and PWM mode */
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0x04, /* CPU FAN0 output mode and PWM mode */
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0x12, /* AUX FAN mode */
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0x62, /* CPU fan1 mode */
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0x62, /* CPU FAN1 mode */
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};
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static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
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@ -193,10 +197,12 @@ static const u8 W83627EHF_REG_PWM[] = { 0x01, 0x03, 0x11, 0x61 };
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static const u8 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
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static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
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/* Advanced Fan control, some values are common for all fans */
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static const u8 W83627EHF_REG_FAN_MIN_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
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static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0C, 0x0D, 0x17, 0x66 };
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static const u8 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 };
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static const u8 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
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static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 };
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static const u8 W83627EHF_REG_FAN_MAX_OUTPUT[] = { 0xff, 0x67, 0xff, 0x69 };
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static const u8 W83627EHF_REG_FAN_STEP_OUTPUT[] = { 0xff, 0x68, 0xff, 0x6a };
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/*
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* Conversions
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@ -295,14 +301,19 @@ struct w83627ehf_data {
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u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
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u8 pwm_enable[4]; /* 1->manual
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2->thermal cruise (also called SmartFan I) */
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2->thermal cruise mode (also called SmartFan I)
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3->fan speed cruise mode
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4->variable thermal cruise (also called SmartFan III) */
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u8 pwm_num; /* number of pwm */
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u8 pwm[4];
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u8 target_temp[4];
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u8 tolerance[4];
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u8 fan_min_output[4]; /* minimum fan speed */
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u8 fan_stop_time[4];
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u8 fan_start_output[4]; /* minimum fan speed when spinning up */
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u8 fan_stop_output[4]; /* minimum fan speed when spinning down */
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u8 fan_stop_time[4]; /* time at minimum before disabling fan */
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u8 fan_max_output[4]; /* maximum fan speed */
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u8 fan_step_output[4]; /* rate of change output value */
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u8 vid;
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u8 vrm;
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@ -529,8 +540,10 @@ static struct w83627ehf_data *w83627ehf_update_device(struct device *dev)
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& 3) + 1;
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data->pwm[i] = w83627ehf_read_value(data,
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W83627EHF_REG_PWM[i]);
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data->fan_min_output[i] = w83627ehf_read_value(data,
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W83627EHF_REG_FAN_MIN_OUTPUT[i]);
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data->fan_start_output[i] = w83627ehf_read_value(data,
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W83627EHF_REG_FAN_START_OUTPUT[i]);
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data->fan_stop_output[i] = w83627ehf_read_value(data,
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W83627EHF_REG_FAN_STOP_OUTPUT[i]);
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data->fan_stop_time[i] = w83627ehf_read_value(data,
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W83627EHF_REG_FAN_STOP_TIME[i]);
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data->target_temp[i] =
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@ -976,7 +989,7 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
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u32 val = simple_strtoul(buf, NULL, 10);
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u16 reg;
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if (!val || (val > 2)) /* only modes 1 and 2 are supported */
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if (!val || (val > 4))
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return -EINVAL;
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mutex_lock(&data->update_lock);
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reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
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@ -1118,7 +1131,10 @@ store_##reg(struct device *dev, struct device_attribute *attr, \
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return count; \
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}
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fan_functions(fan_min_output, FAN_MIN_OUTPUT)
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fan_functions(fan_start_output, FAN_START_OUTPUT)
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fan_functions(fan_stop_output, FAN_STOP_OUTPUT)
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fan_functions(fan_max_output, FAN_MAX_OUTPUT)
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fan_functions(fan_step_output, FAN_STEP_OUTPUT)
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#define fan_time_functions(reg, REG) \
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static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
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@ -1161,8 +1177,14 @@ static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
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SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
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store_fan_stop_time, 3),
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SENSOR_ATTR(pwm4_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
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store_fan_min_output, 3),
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SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
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store_fan_start_output, 3),
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SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
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store_fan_stop_output, 3),
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SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
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store_fan_max_output, 3),
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SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
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store_fan_step_output, 3),
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};
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static struct sensor_device_attribute sda_sf3_arrays[] = {
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@ -1172,12 +1194,24 @@ static struct sensor_device_attribute sda_sf3_arrays[] = {
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store_fan_stop_time, 1),
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SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
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store_fan_stop_time, 2),
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SENSOR_ATTR(pwm1_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
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store_fan_min_output, 0),
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SENSOR_ATTR(pwm2_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
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store_fan_min_output, 1),
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SENSOR_ATTR(pwm3_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
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store_fan_min_output, 2),
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SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
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store_fan_start_output, 0),
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SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
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store_fan_start_output, 1),
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SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
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store_fan_start_output, 2),
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SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
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store_fan_stop_output, 0),
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SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
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store_fan_stop_output, 1),
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SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
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store_fan_stop_output, 2),
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/* pwm1 and pwm3 don't support max and step settings */
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SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
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store_fan_max_output, 1),
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SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
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store_fan_step_output, 1),
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};
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static ssize_t
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