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>
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c
index bb5e787..0dcaba9 100644
--- a/drivers/hwmon/w83627ehf.c
+++ b/drivers/hwmon/w83627ehf.c
@@ -5,6 +5,7 @@
Copyright (C) 2006 Yuan Mu (Winbond),
Rudolf Marek <r.marek@assembler.cz>
David Hubbard <david.c.hubbard@gmail.com>
+ Daniel J Blueman <daniel.blueman@gmail.com>
Shamelessly ripped from the w83627hf driver
Copyright (C) 2003 Mark Studebaker
@@ -177,12 +178,15 @@
#define W83627EHF_REG_ALARM3 0x45B
/* SmartFan registers */
+#define W83627EHF_REG_FAN_STEPUP_TIME 0x0f
+#define W83627EHF_REG_FAN_STEPDOWN_TIME 0x0e
+
/* DC or PWM output fan configuration */
static const u8 W83627EHF_REG_PWM_ENABLE[] = {
0x04, /* SYS FAN0 output mode and PWM mode */
0x04, /* CPU FAN0 output mode and PWM mode */
0x12, /* AUX FAN mode */
- 0x62, /* CPU fan1 mode */
+ 0x62, /* CPU FAN1 mode */
};
static const u8 W83627EHF_PWM_MODE_SHIFT[] = { 0, 1, 0, 6 };
@@ -193,10 +197,12 @@
static const u8 W83627EHF_REG_TARGET[] = { 0x05, 0x06, 0x13, 0x63 };
static const u8 W83627EHF_REG_TOLERANCE[] = { 0x07, 0x07, 0x14, 0x62 };
-
/* Advanced Fan control, some values are common for all fans */
-static const u8 W83627EHF_REG_FAN_MIN_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
-static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0C, 0x0D, 0x17, 0x66 };
+static const u8 W83627EHF_REG_FAN_START_OUTPUT[] = { 0x0a, 0x0b, 0x16, 0x65 };
+static const u8 W83627EHF_REG_FAN_STOP_OUTPUT[] = { 0x08, 0x09, 0x15, 0x64 };
+static const u8 W83627EHF_REG_FAN_STOP_TIME[] = { 0x0c, 0x0d, 0x17, 0x66 };
+static const u8 W83627EHF_REG_FAN_MAX_OUTPUT[] = { 0xff, 0x67, 0xff, 0x69 };
+static const u8 W83627EHF_REG_FAN_STEP_OUTPUT[] = { 0xff, 0x68, 0xff, 0x6a };
/*
* Conversions
@@ -295,14 +301,19 @@
u8 pwm_mode[4]; /* 0->DC variable voltage, 1->PWM variable duty cycle */
u8 pwm_enable[4]; /* 1->manual
- 2->thermal cruise (also called SmartFan I) */
+ 2->thermal cruise mode (also called SmartFan I)
+ 3->fan speed cruise mode
+ 4->variable thermal cruise (also called SmartFan III) */
u8 pwm_num; /* number of pwm */
u8 pwm[4];
u8 target_temp[4];
u8 tolerance[4];
- u8 fan_min_output[4]; /* minimum fan speed */
- u8 fan_stop_time[4];
+ u8 fan_start_output[4]; /* minimum fan speed when spinning up */
+ u8 fan_stop_output[4]; /* minimum fan speed when spinning down */
+ u8 fan_stop_time[4]; /* time at minimum before disabling fan */
+ u8 fan_max_output[4]; /* maximum fan speed */
+ u8 fan_step_output[4]; /* rate of change output value */
u8 vid;
u8 vrm;
@@ -529,8 +540,10 @@
& 3) + 1;
data->pwm[i] = w83627ehf_read_value(data,
W83627EHF_REG_PWM[i]);
- data->fan_min_output[i] = w83627ehf_read_value(data,
- W83627EHF_REG_FAN_MIN_OUTPUT[i]);
+ data->fan_start_output[i] = w83627ehf_read_value(data,
+ W83627EHF_REG_FAN_START_OUTPUT[i]);
+ data->fan_stop_output[i] = w83627ehf_read_value(data,
+ W83627EHF_REG_FAN_STOP_OUTPUT[i]);
data->fan_stop_time[i] = w83627ehf_read_value(data,
W83627EHF_REG_FAN_STOP_TIME[i]);
data->target_temp[i] =
@@ -976,7 +989,7 @@
u32 val = simple_strtoul(buf, NULL, 10);
u16 reg;
- if (!val || (val > 2)) /* only modes 1 and 2 are supported */
+ if (!val || (val > 4))
return -EINVAL;
mutex_lock(&data->update_lock);
reg = w83627ehf_read_value(data, W83627EHF_REG_PWM_ENABLE[nr]);
@@ -1118,7 +1131,10 @@
return count; \
}
-fan_functions(fan_min_output, FAN_MIN_OUTPUT)
+fan_functions(fan_start_output, FAN_START_OUTPUT)
+fan_functions(fan_stop_output, FAN_STOP_OUTPUT)
+fan_functions(fan_max_output, FAN_MAX_OUTPUT)
+fan_functions(fan_step_output, FAN_STEP_OUTPUT)
#define fan_time_functions(reg, REG) \
static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
@@ -1161,8 +1177,14 @@
static struct sensor_device_attribute sda_sf3_arrays_fan4[] = {
SENSOR_ATTR(pwm4_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
store_fan_stop_time, 3),
- SENSOR_ATTR(pwm4_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
- store_fan_min_output, 3),
+ SENSOR_ATTR(pwm4_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
+ store_fan_start_output, 3),
+ SENSOR_ATTR(pwm4_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
+ store_fan_stop_output, 3),
+ SENSOR_ATTR(pwm4_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
+ store_fan_max_output, 3),
+ SENSOR_ATTR(pwm4_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
+ store_fan_step_output, 3),
};
static struct sensor_device_attribute sda_sf3_arrays[] = {
@@ -1172,12 +1194,24 @@
store_fan_stop_time, 1),
SENSOR_ATTR(pwm3_stop_time, S_IWUSR | S_IRUGO, show_fan_stop_time,
store_fan_stop_time, 2),
- SENSOR_ATTR(pwm1_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
- store_fan_min_output, 0),
- SENSOR_ATTR(pwm2_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
- store_fan_min_output, 1),
- SENSOR_ATTR(pwm3_min_output, S_IWUSR | S_IRUGO, show_fan_min_output,
- store_fan_min_output, 2),
+ SENSOR_ATTR(pwm1_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
+ store_fan_start_output, 0),
+ SENSOR_ATTR(pwm2_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
+ store_fan_start_output, 1),
+ SENSOR_ATTR(pwm3_start_output, S_IWUSR | S_IRUGO, show_fan_start_output,
+ store_fan_start_output, 2),
+ SENSOR_ATTR(pwm1_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
+ store_fan_stop_output, 0),
+ SENSOR_ATTR(pwm2_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
+ store_fan_stop_output, 1),
+ SENSOR_ATTR(pwm3_stop_output, S_IWUSR | S_IRUGO, show_fan_stop_output,
+ store_fan_stop_output, 2),
+
+ /* pwm1 and pwm3 don't support max and step settings */
+ SENSOR_ATTR(pwm2_max_output, S_IWUSR | S_IRUGO, show_fan_max_output,
+ store_fan_max_output, 1),
+ SENSOR_ATTR(pwm2_step_output, S_IWUSR | S_IRUGO, show_fan_step_output,
+ store_fan_step_output, 1),
};
static ssize_t