IT8620E supports up to 6 pwm channels. Add support for it.
Also check if fan tachometers 4..6 are enabled before instantiating
the respective sysfs attributes.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/it87.c | 110 ++++++++++++++++++++++++++++++++++++++++++---------
1 file changed, 92 insertions(+), 18 deletions(-)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index a1c0226cac9f..4321accc93d3 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -163,7 +163,9 @@ static inline void superio_exit(void)
/* Logical device 7 registers (IT8712F and later) */
#define IT87_SIO_GPIO1_REG 0x25
+#define IT87_SIO_GPIO2_REG 0x26
#define IT87_SIO_GPIO3_REG 0x27
+#define IT87_SIO_GPIO4_REG 0x28
#define IT87_SIO_GPIO5_REG 0x29
#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
@@ -223,8 +225,8 @@ static const u8 IT87_REG_TEMP_OFFSET[] = {0x56, 0x57, 0x59};
#define IT87_REG_FAN_MAIN_CTRL 0x13
#define IT87_REG_FAN_CTL 0x14
-#define IT87_REG_PWM(nr) (0x15 + (nr))
-#define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8)
+static const u8 IT87_REG_PWM[] = {0x15, 0x16, 0x17, 0x7f, 0xa7, 0xaf};
+static const u8 IT87_REG_PWM_DUTY[] = {0x63, 0x6b, 0x73, 0x7b, 0xa3, 0xab};
#define IT87_REG_VIN(nr) (0x20 + (nr))
#define IT87_REG_TEMP(nr) (0x29 + (nr))
@@ -267,6 +269,7 @@ struct it87_devices {
#define FEAT_IN7_INTERNAL (1 << 10) /* Set if in7 is internal */
#define FEAT_SIX_FANS (1 << 11) /* Supports six fans */
#define FEAT_AVCC3 (1 << 12) /* Chip supports in9/AVCC3 */
+#define FEAT_SIX_PWM (1 << 13) /* Chip supports 6 pwm chn */
static const struct it87_devices it87_devices[] = {
[it87] = {
@@ -386,7 +389,7 @@ static const struct it87_devices it87_devices[] = {
.name = "it8620",
.features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
| FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS
- | FEAT_IN7_INTERNAL | FEAT_AVCC3,
+ | FEAT_IN7_INTERNAL | FEAT_AVCC3 | FEAT_SIX_PWM,
.peci_mask = 0x07,
.suffix = "E",
},
@@ -409,6 +412,7 @@ static const struct it87_devices it87_devices[] = {
#define has_in7_internal(data) ((data)->features & FEAT_IN7_INTERNAL)
#define has_six_fans(data) ((data)->features & FEAT_SIX_FANS)
#define has_avcc3(data) ((data)->features & FEAT_AVCC3)
+#define has_six_pwm(data) ((data)->features & FEAT_SIX_PWM)
struct it87_sio_data {
enum chips type;
@@ -468,9 +472,9 @@ struct it87_data {
* is no longer needed, but it is still done to keep the driver
* simple.
*/
- u8 pwm_ctrl[3]; /* Register value */
- u8 pwm_duty[3]; /* Manual PWM value set by user */
- u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
+ u8 pwm_ctrl[6]; /* Register value */
+ u8 pwm_duty[6]; /* Manual PWM value set by user */
+ u8 pwm_temp_map[6]; /* PWM to temp. chan. mapping (bits 1-0) */
/* Automatic fan speed control registers */
u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
@@ -1046,7 +1050,7 @@ static ssize_t set_pwm_enable(struct device *dev,
data->pwm_duty[nr];
else /* Automatic mode */
data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
- it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
+ it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
if (data->type != it8603) {
/* set SmartGuardian mode */
@@ -1082,7 +1086,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
return -EBUSY;
}
data->pwm_duty[nr] = pwm_to_reg(data, val);
- it87_write_value(data, IT87_REG_PWM_DUTY(nr),
+ it87_write_value(data, IT87_REG_PWM_DUTY[nr],
data->pwm_duty[nr]);
} else {
data->pwm_duty[nr] = pwm_to_reg(data, val);
@@ -1092,7 +1096,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
*/
if (!(data->pwm_ctrl[nr] & 0x80)) {
data->pwm_ctrl[nr] = data->pwm_duty[nr];
- it87_write_value(data, IT87_REG_PWM(nr),
+ it87_write_value(data, IT87_REG_PWM[nr],
data->pwm_ctrl[nr]);
}
}
@@ -1185,7 +1189,7 @@ static ssize_t set_pwm_temp_map(struct device *dev,
*/
if (data->pwm_ctrl[nr] & 0x80) {
data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr];
- it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]);
+ it87_write_value(data, IT87_REG_PWM[nr], data->pwm_ctrl[nr]);
}
mutex_unlock(&data->update_lock);
return count;
@@ -1363,6 +1367,27 @@ static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR,
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR,
show_auto_temp, set_auto_temp, 2, 4);
+static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
+ show_pwm_enable, set_pwm_enable, 3);
+static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
+static DEVICE_ATTR(pwm4_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
+static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO | S_IWUSR,
+ show_pwm_temp_map, set_pwm_temp_map, 3);
+
+static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
+ show_pwm_enable, set_pwm_enable, 4);
+static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
+static DEVICE_ATTR(pwm5_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
+static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO | S_IWUSR,
+ show_pwm_temp_map, set_pwm_temp_map, 4);
+
+static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
+ show_pwm_enable, set_pwm_enable, 5);
+static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
+static DEVICE_ATTR(pwm6_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq);
+static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO | S_IWUSR,
+ show_pwm_temp_map, set_pwm_temp_map, 5);
+
/* Alarms */
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -1720,7 +1745,7 @@ static const struct attribute *it87_attributes_fan_div[] = {
&sensor_dev_attr_fan3_div.dev_attr.attr,
};
-static struct attribute *it87_attributes_pwm[3][4+1] = { {
+static struct attribute *it87_attributes_pwm[6][4+1] = { {
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&dev_attr_pwm1_freq.attr,
@@ -1738,12 +1763,33 @@ static struct attribute *it87_attributes_pwm[3][4+1] = { {
&dev_attr_pwm3_freq.attr,
&sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
NULL
+}, {
+ &sensor_dev_attr_pwm4_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm4.dev_attr.attr,
+ &dev_attr_pwm4_freq.attr,
+ &sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
+ NULL
+}, {
+ &sensor_dev_attr_pwm5_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm5.dev_attr.attr,
+ &dev_attr_pwm5_freq.attr,
+ &sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
+ NULL
+}, {
+ &sensor_dev_attr_pwm6_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm6.dev_attr.attr,
+ &dev_attr_pwm6_freq.attr,
+ &sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
+ NULL
} };
-static const struct attribute_group it87_group_pwm[3] = {
+static const struct attribute_group it87_group_pwm[6] = {
{ .attrs = it87_attributes_pwm[0] },
{ .attrs = it87_attributes_pwm[1] },
{ .attrs = it87_attributes_pwm[2] },
+ { .attrs = it87_attributes_pwm[3] },
+ { .attrs = it87_attributes_pwm[4] },
+ { .attrs = it87_attributes_pwm[5] },
};
static struct attribute *it87_attributes_autopwm[3][9+1] = { {
@@ -1922,6 +1968,9 @@ static int __init it87_find(unsigned short *address,
else
sio_data->skip_in |= (1 << 9);
+ if (!(it87_devices[sio_data->type].features & FEAT_SIX_PWM))
+ sio_data->skip_pwm |= (1 << 3) | (1 << 4) | (1 << 5);
+
if (!(it87_devices[sio_data->type].features & FEAT_VID))
sio_data->skip_vid = 1;
@@ -2024,6 +2073,11 @@ static int __init it87_find(unsigned short *address,
superio_select(GPIO);
+ /* Check for pwm5 */
+ reg = superio_inb(IT87_SIO_GPIO1_REG);
+ if (reg & (1 << 6))
+ sio_data->skip_pwm |= (1 << 4);
+
/* Check for fan4, fan5 */
reg = superio_inb(IT87_SIO_GPIO2_REG);
if (!(reg & (1 << 5)))
@@ -2038,12 +2092,22 @@ static int __init it87_find(unsigned short *address,
if (reg & (1 << 7))
sio_data->skip_fan |= (1 << 2);
+ /* Check for pwm4 */
+ reg = superio_inb(IT87_SIO_GPIO4_REG);
+ if (!(reg & (1 << 4)))
+ sio_data->skip_pwm |= (1 << 3);
+
/* Check for pwm2, fan2 */
reg = superio_inb(IT87_SIO_GPIO5_REG);
if (reg & (1 << 1))
sio_data->skip_pwm |= (1 << 1);
if (reg & (1 << 2))
sio_data->skip_fan |= (1 << 1);
+ /* Check for pwm6, fan6 */
+ if (!(reg & (1 << 7))) {
+ sio_data->skip_pwm |= (1 << 5);
+ sio_data->skip_fan |= (1 << 5);
+ }
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else {
@@ -2186,7 +2250,7 @@ static void it87_remove_files(struct device *dev)
sysfs_remove_file(&dev->kobj,
it87_attributes_fan_div[i]);
}
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < 6; i++) {
if (sio_data->skip_pwm & (1 << i))
continue;
sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
@@ -2369,7 +2433,7 @@ static int it87_probe(struct platform_device *pdev)
}
if (enable_pwm_interface) {
- for (i = 0; i < 3; i++) {
+ for (i = 0; i < 6; i++) {
if (sio_data->skip_pwm & (1 << i))
continue;
err = sysfs_create_group(&dev->kobj,
@@ -2472,7 +2536,7 @@ static int it87_check_pwm(struct device *dev)
for (i = 0; i < 3; i++)
pwm[i] = it87_read_value(data,
- IT87_REG_PWM(i));
+ IT87_REG_PWM[i]);
/*
* If any fan is in automatic pwm mode, the polarity
@@ -2487,7 +2551,7 @@ static int it87_check_pwm(struct device *dev)
tmp | 0x87);
for (i = 0; i < 3; i++)
it87_write_value(data,
- IT87_REG_PWM(i),
+ IT87_REG_PWM[i],
0x7f & ~pwm[i]);
return 1;
}
@@ -2605,6 +2669,16 @@ static void it87_init_device(struct platform_device *pdev)
/* Fan input pins may be used for alternative functions */
data->has_fan &= ~sio_data->skip_fan;
+ /* Check if pwm5, pwm6 are enabled */
+ if (has_six_pwm(data)) {
+ /* The following code may be IT8620E specific */
+ tmp = it87_read_value(data, IT87_REG_FAN_DIV);
+ if ((tmp & 0xc0) == 0xc0)
+ sio_data->skip_pwm |= (1 << 4);
+ if (!(tmp & (1 << 3)))
+ sio_data->skip_pwm |= (1 << 5);
+ }
+
/* Start monitoring */
it87_write_value(data, IT87_REG_CONFIG,
(it87_read_value(data, IT87_REG_CONFIG) & 0x3e)
@@ -2613,11 +2687,11 @@ static void it87_init_device(struct platform_device *pdev)
static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
{
- data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
+ data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM[nr]);
if (has_newer_autopwm(data)) {
data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
data->pwm_duty[nr] = it87_read_value(data,
- IT87_REG_PWM_DUTY(nr));
+ IT87_REG_PWM_DUTY[nr]);
} else {
if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */
data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
--
2.1.0
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