summaryrefslogtreecommitdiffstats
path: root/drivers/hwmon/it87.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hwmon/it87.c')
-rw-r--r--drivers/hwmon/it87.c61
1 files changed, 49 insertions, 12 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index e9ab8a32903..956cd553c71 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -5,6 +5,7 @@
Supports: IT8705F Super I/O chip w/LPC interface
IT8712F Super I/O chip w/LPC interface & SMBus
IT8716F Super I/O chip w/LPC interface
+ IT8718F Super I/O chip w/LPC interface
Sis950 A clone of the IT8705F
Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com>
@@ -51,12 +52,13 @@ static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END };
static unsigned short isa_address;
/* Insmod parameters */
-I2C_CLIENT_INSMOD_3(it87, it8712, it8716);
+I2C_CLIENT_INSMOD_4(it87, it8712, it8716, it8718);
#define REG 0x2e /* The register to read/write */
#define DEV 0x07 /* Register: Logical device select */
#define VAL 0x2f /* The value to read/write */
#define PME 0x04 /* The device with the fan registers in it */
+#define GPIO 0x07 /* The device with the IT8718F VID value in it */
#define DEVID 0x20 /* Register: Device ID */
#define DEVREV 0x22 /* Register: Device Revision */
@@ -78,10 +80,10 @@ static int superio_inw(int reg)
}
static inline void
-superio_select(void)
+superio_select(int ldn)
{
outb(DEV, REG);
- outb(PME, VAL);
+ outb(ldn, VAL);
}
static inline void
@@ -100,21 +102,27 @@ superio_exit(void)
outb(0x02, VAL);
}
+/* Logical device 4 registers */
#define IT8712F_DEVID 0x8712
#define IT8705F_DEVID 0x8705
#define IT8716F_DEVID 0x8716
+#define IT8718F_DEVID 0x8718
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
+/* Logical device 7 registers (IT8712F and later) */
+#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
+#define IT87_SIO_VID_REG 0xfc /* VID value */
+
/* Update battery voltage after every reading if true */
static int update_vbat;
/* Not all BIOSes properly configure the PWM registers */
static int fix_pwm_polarity;
-/* Chip Type */
-
+/* Values read from Super-I/O config space */
static u16 chip_type;
+static u8 vid_value;
/* Many IT87 constants specified below */
@@ -133,6 +141,8 @@ static u16 chip_type;
#define IT87_REG_ALARM2 0x02
#define IT87_REG_ALARM3 0x03
+/* The IT8718F has the VID value in a different register, in Super-I/O
+ configuration space. */
#define IT87_REG_VID 0x0a
/* Warning: register 0x0b is used for something completely different in
new chips/revisions. I suspect only 16-bit tachometer mode will work
@@ -793,10 +803,11 @@ static int __init it87_find(unsigned short *address)
chip_type = superio_inw(DEVID);
if (chip_type != IT8712F_DEVID
&& chip_type != IT8716F_DEVID
+ && chip_type != IT8718F_DEVID
&& chip_type != IT8705F_DEVID)
goto exit;
- superio_select();
+ superio_select(PME);
if (!(superio_inb(IT87_ACT_REG) & 0x01)) {
pr_info("it87: Device not activated, skipping\n");
goto exit;
@@ -812,6 +823,21 @@ static int __init it87_find(unsigned short *address)
pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n",
chip_type, *address, superio_inb(DEVREV) & 0x0f);
+ /* Read GPIO config and VID value from LDN 7 (GPIO) */
+ if (chip_type != IT8705F_DEVID) {
+ int reg;
+
+ superio_select(GPIO);
+ if (chip_type == it8718)
+ vid_value = superio_inb(IT87_SIO_VID_REG);
+
+ reg = superio_inb(IT87_SIO_PINX2_REG);
+ if (reg & (1 << 0))
+ pr_info("it87: in3 is VCC (+5V)\n");
+ if (reg & (1 << 1))
+ pr_info("it87: in7 is VCCH (+5V Stand-By)\n");
+ }
+
exit:
superio_exit();
return err;
@@ -880,6 +906,9 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
case IT8716F_DEVID:
kind = it8716;
break;
+ case IT8718F_DEVID:
+ kind = it8718;
+ break;
}
}
}
@@ -900,6 +929,8 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
name = "it8712";
} else if (kind == it8716) {
name = "it8716";
+ } else if (kind == it8718) {
+ name = "it8718";
}
/* Fill in the remaining client fields and put it into the global list */
@@ -969,7 +1000,8 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr);
/* Do not create fan files for disabled fans */
- if (data->type == it8716) { /* 16-bit tachometers */
+ if (data->type == it8716 || data->type == it8718) {
+ /* 16-bit tachometers */
if (data->has_fan & (1 << 0)) {
device_create_file(&new_client->dev,
&sensor_dev_attr_fan1_input16.dev_attr);
@@ -989,6 +1021,7 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
&sensor_dev_attr_fan3_min16.dev_attr);
}
} else {
+ /* 8-bit tachometers with clock divider */
if (data->has_fan & (1 << 0)) {
device_create_file(&new_client->dev,
&sensor_dev_attr_fan1_input.dev_attr);
@@ -1025,8 +1058,11 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind)
device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr);
}
- if (data->type == it8712 || data->type == it8716) {
+ if (data->type == it8712 || data->type == it8716
+ || data->type == it8718) {
data->vrm = vid_which_vrm();
+ /* VID reading from Super-I/O config space if available */
+ data->vid = vid_value;
device_create_file_vrm(new_client);
device_create_file_vid(new_client);
}
@@ -1192,7 +1228,7 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data)
data->has_fan = (data->fan_main_ctrl >> 4) & 0x07;
/* Set tachometers to 16-bit mode if needed */
- if (data->type == it8716) {
+ if (data->type == it8716 || data->type == it8718) {
tmp = it87_read_value(client, IT87_REG_FAN_16BIT);
if (~tmp & 0x07 & data->has_fan) {
dev_dbg(&client->dev,
@@ -1265,7 +1301,7 @@ static struct it87_data *it87_update_device(struct device *dev)
data->fan[i] = it87_read_value(client,
IT87_REG_FAN(i));
/* Add high byte if in 16-bit mode */
- if (data->type == it8716) {
+ if (data->type == it8716 || data->type == it8718) {
data->fan[i] |= it87_read_value(client,
IT87_REG_FANX(i)) << 8;
data->fan_min[i] |= it87_read_value(client,
@@ -1282,7 +1318,8 @@ static struct it87_data *it87_update_device(struct device *dev)
}
/* Newer chips don't have clock dividers */
- if ((data->has_fan & 0x07) && data->type != it8716) {
+ if ((data->has_fan & 0x07) && data->type != it8716
+ && data->type != it8718) {
i = it87_read_value(client, IT87_REG_FAN_DIV);
data->fan_div[0] = i & 0x07;
data->fan_div[1] = (i >> 3) & 0x07;
@@ -1340,7 +1377,7 @@ static void __exit sm_it87_exit(void)
MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>");
-MODULE_DESCRIPTION("IT8705F/8712F/8716F, SiS950 driver");
+MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, SiS950 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-17 10:30:24 +0000