Add support for the IT8732F. This chip is pretty similar to IT8721F,
with the main difference being that the ADC LSB is 10.9 mV instead of
12 mV.
Signed-off-by: Justin Maggard <jmaggard@xxxxxxxxxxx>
---
Documentation/hwmon/it87 | 35 +++++++++++++++++++------------
drivers/hwmon/it87.c | 54 +++++++++++++++++++++++++++++++++++++++---------
2 files changed, 66 insertions(+), 23 deletions(-)
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87
index e872948..733296d 100644
--- a/Documentation/hwmon/it87
+++ b/Documentation/hwmon/it87
@@ -38,6 +38,10 @@ Supported chips:
Prefix: 'it8728'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
+ * IT8732F
+ Prefix: 'it8732'
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+ Datasheet: Not publicly available
* IT8771E
Prefix: 'it8771'
Addresses scanned: from Super I/O config space (8 I/O ports)
@@ -111,9 +115,9 @@ Description
-----------
This driver implements support for the IT8603E, IT8620E, IT8623E, IT8705F,
-IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E,
-IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E, and SiS950
-chips.
+IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8732F,
+IT8758E, IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E, and
+SiS950 chips.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -137,10 +141,10 @@ The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E and later IT8712F revisions
have support for 2 additional fans. The additional fans are supported by the
driver.
-The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8781F, IT8782F, IT8783E/F,
-and late IT8712F and IT8705F also have optional 16-bit tachometer counters
-for fans 1 to 3. This is better (no more fan clock divider mess) but not
-compatible with the older chips and revisions. The 16-bit tachometer mode
+The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F,
+IT8783E/F, and late IT8712F and IT8705F also have optional 16-bit tachometer
+counters for fans 1 to 3. This is better (no more fan clock divider mess) but
+not compatible with the older chips and revisions. The 16-bit tachometer mode
is enabled by the driver when one of the above chips is detected.
The IT8726F is just bit enhanced IT8716F with additional hardware
@@ -159,6 +163,9 @@ IT8728F. It only supports 16-bit fan mode.
The IT8790E supports up to 3 fans. 16-bit fan mode is always enabled.
+The IT8732F supports a closed-loop mode for fan control, but this is not
+currently implemented by the driver.
+
Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed.
@@ -173,12 +180,14 @@ is done.
Voltage sensors (also known as IN sensors) report their values in volts. An
alarm is triggered if the voltage has crossed a programmable minimum or
maximum limit. Note that minimum in this case always means 'closest to
-zero'; this is important for negative voltage measurements. All voltage
-inputs can measure voltages between 0 and 4.08 volts, with a resolution of
-0.016 volt (except IT8603E, IT8721F/IT8758E and IT8728F: 0.012 volt.) The
-battery voltage in8 does not have limit registers.
-
-On the IT8603E, IT8721F/IT8758E, IT8781F, IT8782F, and IT8783E/F, some
+zero'; this is important for negative voltage measurements. On most chips, all
+voltage inputs can measure voltages between 0 and 4.08 volts, with a resolution
+of 0.016 volt. IT8603E, IT8721F/IT8758E and IT8728F can measure between 0 and
+3.06 volts, with a resolution of 0.012 volt. IT8732F can measure between 0 and
+2.8 volts with a resolution of 0.0109 volt. The battery voltage in8 does not
+have limit registers.
+
+On the IT8603E, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F, and IT8783E/F, some
voltage inputs are internal and scaled inside the chip:
* in3 (optional)
* in7 (optional for IT8781F, IT8782F, and IT8783E/F)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index d0ee556..4f0efe7 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -21,6 +21,7 @@
* IT8721F Super I/O chip w/LPC interface
* IT8726F Super I/O chip w/LPC interface
* IT8728F Super I/O chip w/LPC interface
+ * IT8732F Super I/O chip w/LPC interface
* IT8758E Super I/O chip w/LPC interface
* IT8771E Super I/O chip w/LPC interface
* IT8772E Super I/O chip w/LPC interface
@@ -69,8 +70,9 @@
#define DRVNAME "it87"
-enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8771,
- it8772, it8781, it8782, it8783, it8786, it8790, it8603, it8620 };
+enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
+ it8771, it8772, it8781, it8782, it8783, it8786, it8790, it8603,
+ it8620 };
static unsigned short force_id;
module_param(force_id, ushort, 0);
@@ -147,6 +149,7 @@ static inline void superio_exit(void)
#define IT8720F_DEVID 0x8720
#define IT8721F_DEVID 0x8721
#define IT8726F_DEVID 0x8726
+#define IT8732F_DEVID 0x8732
#define IT8728F_DEVID 0x8728
#define IT8771E_DEVID 0x8771
#define IT8772E_DEVID 0x8772
@@ -265,6 +268,7 @@ struct it87_devices {
#define FEAT_VID (1 << 9) /* Set if chip supports VID */
#define FEAT_IN7_INTERNAL (1 << 10) /* Set if in7 is internal */
#define FEAT_SIX_FANS (1 << 11) /* Supports six fans */
+#define FEAT_10_9MV_ADC (1 << 12)
static const struct it87_devices it87_devices[] = {
[it87] = {
@@ -315,6 +319,15 @@ static const struct it87_devices it87_devices[] = {
| FEAT_IN7_INTERNAL,
.peci_mask = 0x07,
},
+ [it8732] = {
+ .name = "it8732",
+ .suffix = "F",
+ .features = FEAT_NEWER_AUTOPWM | FEAT_16BIT_FANS
+ | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI
+ | FEAT_10_9MV_ADC | FEAT_IN7_INTERNAL,
+ .peci_mask = 0x07,
+ .old_peci_mask = 0x02, /* Actually reports PCH */
+ },
[it8771] = {
.name = "it8771",
.suffix = "E",
@@ -391,6 +404,7 @@ static const struct it87_devices it87_devices[] = {
#define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS)
#define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC)
+#define has_10_9mv_adc(data) ((data)->features & FEAT_10_9MV_ADC)
#define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM)
#define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM)
#define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET)
@@ -473,23 +487,35 @@ struct it87_data {
s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
};
-static int adc_lsb(const struct it87_data *data, int nr)
+static void adc_lsb(const struct it87_data *data, int nr, int *num, int *denom)
{
- int lsb = has_12mv_adc(data) ? 12 : 16;
+ if (has_12mv_adc(data)) {
+ *num = 12;
+ *denom = 1;
+ } else if (has_10_9mv_adc(data)) {
+ *num = 109;
+ *denom = 10;
+ } else {
+ *num = 16;
+ *denom = 1;
+ }
if (data->in_scaled & (1 << nr))
- lsb <<= 1;
- return lsb;
+ *num <<= 1;
}
static u8 in_to_reg(const struct it87_data *data, int nr, long val)
{
- val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
+ int num, denom;
+ adc_lsb(data, nr, &num, &denom);
+ val = DIV_ROUND_CLOSEST(val * denom, num);
return clamp_val(val, 0, 255);
}
static int in_from_reg(const struct it87_data *data, int nr, int val)
{
- return val * adc_lsb(data, nr);
+ int num, denom;
+ adc_lsb(data, nr, &num, &denom);
+ return val * num / denom;
}
static inline u8 FAN_TO_REG(long rpm, int div)
@@ -1515,9 +1541,14 @@ static ssize_t show_label(struct device *dev, struct device_attribute *attr,
};
struct it87_data *data = dev_get_drvdata(dev);
int nr = to_sensor_dev_attr(attr)->index;
+ const char *label;
- return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
- : labels[nr]);
+ if (has_12mv_adc(data) || has_10_9mv_adc(data))
+ label = labels_it8721[nr];
+ else
+ label = labels[nr];
+
+ return sprintf(buf, "%s\n", label);
}
static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
@@ -1853,6 +1884,9 @@ static int __init it87_find(unsigned short *address,
case IT8728F_DEVID:
sio_data->type = it8728;
break;
+ case IT8732F_DEVID:
+ sio_data->type = it8732;
+ break;
case IT8771E_DEVID:
sio_data->type = it8771;
break;
--
2.5.0
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