hwmon: (it87) Add IT8728F support
Until we get a datasheet for the IT8728F, treat it as fully compatible with the IT8721F, as it seems to work reasonably well. This closes kernel bug #27262. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Jean Delvare
Jean Delvare
Родитель
d6db23c7ce
Коммит
16b5dda22e
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@ -26,6 +26,10 @@ Supported chips:
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Prefix: 'it8721'
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Addresses scanned: from Super I/O config space (8 I/O ports)
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Datasheet: Not publicly available
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* IT8728F
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Prefix: 'it8728'
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Addresses scanned: from Super I/O config space (8 I/O ports)
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Datasheet: Not publicly available
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* SiS950 [clone of IT8705F]
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Prefix: 'it87'
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Addresses scanned: from Super I/O config space (8 I/O ports)
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@ -71,7 +75,7 @@ Description
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-----------
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This driver implements support for the IT8705F, IT8712F, IT8716F,
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IT8718F, IT8720F, IT8721F, IT8726F, IT8758E and SiS950 chips.
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IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.
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These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
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joysticks and other miscellaneous stuff. For hardware monitoring, they
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@ -105,6 +109,9 @@ The IT8726F is just bit enhanced IT8716F with additional hardware
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for AMD power sequencing. Therefore the chip will appear as IT8716F
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to userspace applications.
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The IT8728F is considered compatible with the IT8721F, until a datasheet
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becomes available (hopefully.)
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Temperatures are measured in degrees Celsius. An alarm is triggered once
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when the Overtemperature Shutdown limit is crossed.
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@ -121,8 +128,8 @@ alarm is triggered if the voltage has crossed a programmable minimum or
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maximum limit. Note that minimum in this case always means 'closest to
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zero'; this is important for negative voltage measurements. All voltage
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inputs can measure voltages between 0 and 4.08 volts, with a resolution of
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0.016 volt (except IT8721F/IT8758E: 0.012 volt.) The battery voltage in8 does
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not have limit registers.
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0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery
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voltage in8 does not have limit registers.
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On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
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the chip (in7, in8 and optionally in3). The driver handles this transparently
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@ -474,8 +474,8 @@ config SENSORS_IT87
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select HWMON_VID
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help
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If you say yes here you get support for ITE IT8705F, IT8712F,
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IT8716F, IT8718F, IT8720F, IT8721F, IT8726F and IT8758E sensor
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chips, and the SiS960 clone.
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IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F and IT8758E
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sensor chips, and the SiS960 clone.
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This driver can also be built as a module. If so, the module
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will be called it87.
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@ -17,6 +17,7 @@
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* IT8720F Super I/O chip w/LPC interface
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* IT8721F Super I/O chip w/LPC interface
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* IT8726F Super I/O chip w/LPC interface
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* IT8728F Super I/O chip w/LPC interface
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* IT8758E Super I/O chip w/LPC interface
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* Sis950 A clone of the IT8705F
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*
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@ -58,7 +59,7 @@
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#define DRVNAME "it87"
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enum chips { it87, it8712, it8716, it8718, it8720, it8721 };
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enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 };
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static unsigned short force_id;
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module_param(force_id, ushort, 0);
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@ -135,6 +136,7 @@ static inline void superio_exit(void)
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#define IT8720F_DEVID 0x8720
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#define IT8721F_DEVID 0x8721
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#define IT8726F_DEVID 0x8726
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#define IT8728F_DEVID 0x8728
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#define IT87_ACT_REG 0x30
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#define IT87_BASE_REG 0x60
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@ -274,11 +276,31 @@ struct it87_data {
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s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
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};
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static inline int has_12mv_adc(const struct it87_data *data)
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{
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/*
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* IT8721F and later have a 12 mV ADC, also with internal scaling
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* on selected inputs.
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*/
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return data->type == it8721
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|| data->type == it8728;
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}
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static inline int has_newer_autopwm(const struct it87_data *data)
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{
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/*
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* IT8721F and later have separate registers for the temperature
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* mapping and the manual duty cycle.
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*/
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return data->type == it8721
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|| data->type == it8728;
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}
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static u8 in_to_reg(const struct it87_data *data, int nr, long val)
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{
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long lsb;
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if (data->type == it8721) {
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if (has_12mv_adc(data)) {
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if (data->in_scaled & (1 << nr))
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lsb = 24;
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else
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@ -292,7 +314,7 @@ static u8 in_to_reg(const struct it87_data *data, int nr, long val)
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static int in_from_reg(const struct it87_data *data, int nr, int val)
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{
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if (data->type == it8721) {
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if (has_12mv_adc(data)) {
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if (data->in_scaled & (1 << nr))
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return val * 24;
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else
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@ -329,7 +351,7 @@ static inline u16 FAN16_TO_REG(long rpm)
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static u8 pwm_to_reg(const struct it87_data *data, long val)
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{
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if (data->type == it8721)
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if (has_newer_autopwm(data))
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return val;
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else
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return val >> 1;
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@ -337,7 +359,7 @@ static u8 pwm_to_reg(const struct it87_data *data, long val)
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static int pwm_from_reg(const struct it87_data *data, u8 reg)
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{
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if (data->type == it8721)
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if (has_newer_autopwm(data))
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return reg;
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else
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return (reg & 0x7f) << 1;
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@ -374,7 +396,8 @@ static inline int has_16bit_fans(const struct it87_data *data)
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|| data->type == it8716
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|| data->type == it8718
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|| data->type == it8720
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|| data->type == it8721;
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|| data->type == it8721
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|| data->type == it8728;
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}
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static inline int has_old_autopwm(const struct it87_data *data)
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@ -842,7 +865,7 @@ static ssize_t set_pwm_enable(struct device *dev,
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data->fan_main_ctrl);
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} else {
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if (val == 1) /* Manual mode */
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data->pwm_ctrl[nr] = data->type == it8721 ?
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data->pwm_ctrl[nr] = has_newer_autopwm(data) ?
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data->pwm_temp_map[nr] :
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data->pwm_duty[nr];
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else /* Automatic mode */
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@ -870,7 +893,7 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
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return -EINVAL;
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mutex_lock(&data->update_lock);
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if (data->type == it8721) {
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if (has_newer_autopwm(data)) {
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/* If we are in automatic mode, the PWM duty cycle register
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* is read-only so we can't write the value */
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if (data->pwm_ctrl[nr] & 0x80) {
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@ -1311,8 +1334,8 @@ static ssize_t show_label(struct device *dev, struct device_attribute *attr,
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struct it87_data *data = dev_get_drvdata(dev);
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int nr = to_sensor_dev_attr(attr)->index;
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return sprintf(buf, "%s\n", data->type == it8721 ? labels_it8721[nr]
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: labels[nr]);
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return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr]
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: labels[nr]);
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}
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static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0);
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static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1);
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@ -1605,6 +1628,9 @@ static int __init it87_find(unsigned short *address,
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case IT8721F_DEVID:
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sio_data->type = it8721;
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break;
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case IT8728F_DEVID:
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sio_data->type = it8728;
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break;
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case 0xffff: /* No device at all */
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goto exit;
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default:
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@ -1646,8 +1672,11 @@ static int __init it87_find(unsigned short *address,
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superio_select(GPIO);
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reg = superio_inb(IT87_SIO_GPIO3_REG);
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if (sio_data->type == it8721) {
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/* The IT8721F/IT8758E doesn't have VID pins at all */
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if (sio_data->type == it8721 || sio_data->type == it8728) {
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/*
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* The IT8721F/IT8758E doesn't have VID pins at all,
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* not sure about the IT8728F.
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*/
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sio_data->skip_vid = 1;
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} else {
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/* We need at least 4 VID pins */
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@ -1692,7 +1721,8 @@ static int __init it87_find(unsigned short *address,
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}
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if (reg & (1 << 0))
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sio_data->internal |= (1 << 0);
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if ((reg & (1 << 1)) || sio_data->type == it8721)
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if ((reg & (1 << 1)) || sio_data->type == it8721 ||
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sio_data->type == it8728)
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sio_data->internal |= (1 << 1);
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sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
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@ -1770,6 +1800,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
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"it8718",
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"it8720",
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"it8721",
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"it8728",
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};
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res = platform_get_resource(pdev, IORESOURCE_IO, 0);
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@ -1807,7 +1838,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
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enable_pwm_interface = it87_check_pwm(dev);
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/* Starting with IT8721F, we handle scaling of internal voltages */
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if (data->type == it8721) {
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if (has_12mv_adc(data)) {
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if (sio_data->internal & (1 << 0))
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data->in_scaled |= (1 << 3); /* in3 is AVCC */
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if (sio_data->internal & (1 << 1))
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@ -2093,7 +2124,7 @@ static void __devinit it87_init_device(struct platform_device *pdev)
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static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
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{
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data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr));
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if (data->type == it8721) {
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if (has_newer_autopwm(data)) {
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data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
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data->pwm_duty[nr] = it87_read_value(data,
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IT87_REG_PWM_DUTY(nr));
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