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Diffstat (limited to 'drivers/hwmon/it87.c')
-rw-r--r--drivers/hwmon/it87.c210
1 files changed, 142 insertions, 68 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index f7701295937d..14a5d981be7d 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -15,7 +15,9 @@
* IT8716F Super I/O chip w/LPC interface
* IT8718F Super I/O chip w/LPC interface
* IT8720F Super I/O chip w/LPC interface
+ * IT8721F Super I/O chip w/LPC interface
* IT8726F Super I/O chip w/LPC interface
+ * IT8758E Super I/O chip w/LPC interface
* Sis950 A clone of the IT8705F
*
* Copyright (C) 2001 Chris Gauthron
@@ -54,7 +56,7 @@
#define DRVNAME "it87"
-enum chips { it87, it8712, it8716, it8718, it8720 };
+enum chips { it87, it8712, it8716, it8718, it8720, it8721 };
static unsigned short force_id;
module_param(force_id, ushort, 0);
@@ -126,6 +128,7 @@ superio_exit(void)
#define IT8716F_DEVID 0x8716
#define IT8718F_DEVID 0x8718
#define IT8720F_DEVID 0x8720
+#define IT8721F_DEVID 0x8721
#define IT8726F_DEVID 0x8726
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
@@ -202,56 +205,6 @@ static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
-#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
-#define IN_FROM_REG(val) ((val) * 16)
-
-static inline u8 FAN_TO_REG(long rpm, int div)
-{
- if (rpm == 0)
- return 255;
- rpm = SENSORS_LIMIT(rpm, 1, 1000000);
- return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
- 254);
-}
-
-static inline u16 FAN16_TO_REG(long rpm)
-{
- if (rpm == 0)
- return 0xffff;
- return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
-}
-
-#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div)))
-/* The divider is fixed to 2 in 16-bit mode */
-#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2))
-
-#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\
- ((val)+500)/1000),-128,127))
-#define TEMP_FROM_REG(val) ((val) * 1000)
-
-#define PWM_TO_REG(val) ((val) >> 1)
-#define PWM_FROM_REG(val) (((val)&0x7f) << 1)
-
-static int DIV_TO_REG(int val)
-{
- int answer = 0;
- while (answer < 7 && (val >>= 1))
- answer++;
- return answer;
-}
-#define DIV_FROM_REG(val) (1 << (val))
-
-static const unsigned int pwm_freq[8] = {
- 48000000 / 128,
- 24000000 / 128,
- 12000000 / 128,
- 8000000 / 128,
- 6000000 / 128,
- 3000000 / 128,
- 1500000 / 128,
- 750000 / 128,
-};
-
struct it87_sio_data {
enum chips type;
@@ -279,6 +232,7 @@ struct it87_data {
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
+ u16 in_scaled; /* Internal voltage sensors are scaled */
u8 in[9]; /* Register value */
u8 in_max[8]; /* Register value */
u8 in_min[8]; /* Register value */
@@ -310,6 +264,96 @@ struct it87_data {
s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
};
+static u8 in_to_reg(const struct it87_data *data, int nr, long val)
+{
+ long lsb;
+
+ if (data->type == it8721) {
+ if (data->in_scaled & (1 << nr))
+ lsb = 24;
+ else
+ lsb = 12;
+ } else
+ lsb = 16;
+
+ val = DIV_ROUND_CLOSEST(val, lsb);
+ return SENSORS_LIMIT(val, 0, 255);
+}
+
+static int in_from_reg(const struct it87_data *data, int nr, int val)
+{
+ if (data->type == it8721) {
+ if (data->in_scaled & (1 << nr))
+ return val * 24;
+ else
+ return val * 12;
+ } else
+ return val * 16;
+}
+
+static inline u8 FAN_TO_REG(long rpm, int div)
+{
+ if (rpm == 0)
+ return 255;
+ rpm = SENSORS_LIMIT(rpm, 1, 1000000);
+ return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1,
+ 254);
+}
+
+static inline u16 FAN16_TO_REG(long rpm)
+{
+ if (rpm == 0)
+ return 0xffff;
+ return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe);
+}
+
+#define FAN_FROM_REG(val, div) ((val) == 0 ? -1 : (val) == 255 ? 0 : \
+ 1350000 / ((val) * (div)))
+/* The divider is fixed to 2 in 16-bit mode */
+#define FAN16_FROM_REG(val) ((val) == 0 ? -1 : (val) == 0xffff ? 0 : \
+ 1350000 / ((val) * 2))
+
+#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (((val) - 500) / 1000) : \
+ ((val) + 500) / 1000), -128, 127))
+#define TEMP_FROM_REG(val) ((val) * 1000)
+
+static u8 pwm_to_reg(const struct it87_data *data, long val)
+{
+ if (data->type == it8721)
+ return val;
+ else
+ return val >> 1;
+}
+
+static int pwm_from_reg(const struct it87_data *data, u8 reg)
+{
+ if (data->type == it8721)
+ return reg;
+ else
+ return (reg & 0x7f) << 1;
+}
+
+
+static int DIV_TO_REG(int val)
+{
+ int answer = 0;
+ while (answer < 7 && (val >>= 1))
+ answer++;
+ return answer;
+}
+#define DIV_FROM_REG(val) (1 << (val))
+
+static const unsigned int pwm_freq[8] = {
+ 48000000 / 128,
+ 24000000 / 128,
+ 12000000 / 128,
+ 8000000 / 128,
+ 6000000 / 128,
+ 3000000 / 128,
+ 1500000 / 128,
+ 750000 / 128,
+};
+
static inline int has_16bit_fans(const struct it87_data *data)
{
/* IT8705F Datasheet 0.4.1, 3h == Version G.
@@ -319,7 +363,8 @@ static inline int has_16bit_fans(const struct it87_data *data)
|| (data->type == it8712 && data->revision >= 0x08)
|| data->type == it8716
|| data->type == it8718
- || data->type == it8720;
+ || data->type == it8720
+ || data->type == it8721;
}
static inline int has_old_autopwm(const struct it87_data *data)
@@ -357,7 +402,7 @@ static ssize_t show_in(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr]));
+ return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr]));
}
static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
@@ -367,7 +412,7 @@ static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr]));
+ return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_min[nr]));
}
static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
@@ -377,7 +422,7 @@ static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
- return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr]));
+ return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in_max[nr]));
}
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
@@ -393,7 +438,7 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
return -EINVAL;
mutex_lock(&data->update_lock);
- data->in_min[nr] = IN_TO_REG(val);
+ data->in_min[nr] = in_to_reg(data, nr, val);
it87_write_value(data, IT87_REG_VIN_MIN(nr),
data->in_min[nr]);
mutex_unlock(&data->update_lock);
@@ -412,7 +457,7 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
return -EINVAL;
mutex_lock(&data->update_lock);
- data->in_max[nr] = IN_TO_REG(val);
+ data->in_max[nr] = in_to_reg(data, nr, val);
it87_write_value(data, IT87_REG_VIN_MAX(nr),
data->in_max[nr]);
mutex_unlock(&data->update_lock);
@@ -642,7 +687,8 @@ static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
int nr = sensor_attr->index;
struct it87_data *data = it87_update_device(dev);
- return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm_duty[nr]));
+ return sprintf(buf, "%d\n",
+ pwm_from_reg(data, data->pwm_duty[nr]));
}
static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -812,7 +858,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
return -EINVAL;
mutex_lock(&data->update_lock);
- data->pwm_duty[nr] = PWM_TO_REG(val);
+ data->pwm_duty[nr] = pwm_to_reg(data, val);
/* If we are in manual mode, write the duty cycle immediately;
* otherwise, just store it for later use. */
if (!(data->pwm_ctrl[nr] & 0x80)) {
@@ -916,7 +962,8 @@ static ssize_t show_auto_pwm(struct device *dev,
int nr = sensor_attr->nr;
int point = sensor_attr->index;
- return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point]));
+ return sprintf(buf, "%d\n",
+ pwm_from_reg(data, data->auto_pwm[nr][point]));
}
static ssize_t set_auto_pwm(struct device *dev,
@@ -933,7 +980,7 @@ static ssize_t set_auto_pwm(struct device *dev,
return -EINVAL;
mutex_lock(&data->update_lock);
- data->auto_pwm[nr][point] = PWM_TO_REG(val);
+ data->auto_pwm[nr][point] = pwm_to_reg(data, val);
it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
data->auto_pwm[nr][point]);
mutex_unlock(&data->update_lock);
@@ -1203,9 +1250,16 @@ static ssize_t show_label(struct device *dev, struct device_attribute *attr,
"5VSB",
"Vbat",
};
+ static const char *labels_it8721[] = {
+ "+3.3V",
+ "3VSB",
+ "Vbat",
+ };
+ struct it87_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(attr)->index;
- return sprintf(buf, "%s\n", labels[nr]);
+ return sprintf(buf, "%s\n", data->type == it8721 ? labels_it8721[nr]
+ : labels[nr]);
}
static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
@@ -1490,6 +1544,9 @@ static int __init it87_find(unsigned short *address,
case IT8720F_DEVID:
sio_data->type = it8720;
break;
+ case IT8721F_DEVID:
+ sio_data->type = it8721;
+ break;
case 0xffff: /* No device at all */
goto exit;
default:
@@ -1530,11 +1587,17 @@ static int __init it87_find(unsigned short *address,
int reg;
superio_select(GPIO);
- /* We need at least 4 VID pins */
+
reg = superio_inb(IT87_SIO_GPIO3_REG);
- if (reg & 0x0f) {
- pr_info("it87: VID is disabled (pins used for GPIO)\n");
+ if (sio_data->type == it8721) {
+ /* The IT8721F/IT8758E doesn't have VID pins at all */
sio_data->skip_vid = 1;
+ } else {
+ /* We need at least 4 VID pins */
+ if (reg & 0x0f) {
+ pr_info("it87: VID is disabled (pins used for GPIO)\n");
+ sio_data->skip_vid = 1;
+ }
}
/* Check if fan3 is there or not */
@@ -1572,7 +1635,7 @@ static int __init it87_find(unsigned short *address,
}
if (reg & (1 << 0))
sio_data->internal |= (1 << 0);
- if (reg & (1 << 1))
+ if ((reg & (1 << 1)) || sio_data->type == it8721)
sio_data->internal |= (1 << 1);
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
@@ -1650,6 +1713,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
"it8716",
"it8718",
"it8720",
+ "it8721",
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
@@ -1686,6 +1750,16 @@ static int __devinit it87_probe(struct platform_device *pdev)
/* Check PWM configuration */
enable_pwm_interface = it87_check_pwm(dev);
+ /* Starting with IT8721F, we handle scaling of internal voltages */
+ if (data->type == it8721) {
+ if (sio_data->internal & (1 << 0))
+ data->in_scaled |= (1 << 3); /* in3 is AVCC */
+ if (sio_data->internal & (1 << 1))
+ data->in_scaled |= (1 << 7); /* in7 is VSB */
+ if (sio_data->internal & (1 << 2))
+ data->in_scaled |= (1 << 8); /* in8 is Vbat */
+ }
+
/* Initialize the IT87 chip */
it87_init_device(pdev);
@@ -2051,7 +2125,7 @@ static struct it87_data *it87_update_device(struct device *dev)
data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE);
/* The 8705 does not have VID capability.
- The 8718 and the 8720 don't use IT87_REG_VID for the
+ The 8718 and later don't use IT87_REG_VID for the
same purpose. */
if (data->type == it8712 || data->type == it8716) {
data->vid = it87_read_value(data, IT87_REG_VID);
@@ -2151,7 +2225,7 @@ static void __exit sm_it87_exit(void)
MODULE_AUTHOR("Chris Gauthron, "
"Jean Delvare <khali@linux-fr.org>");
-MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, SiS950 driver");
+MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring driver");
module_param(update_vbat, bool, 0);
MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value");
module_param(fix_pwm_polarity, bool, 0);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.