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hwmon: (it87) add IT8613E support

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Teach the Super I/O probe path to recognize IT8613E and add its
hardware monitoring configuration.

Add feature flags, 11 mV ADC scaling, the IT8665-style PWM register map,
six PWM temperature mapping sources, and GPIO pin-mux checks.

Only three temperature inputs are currently known, so retain the existing
three temperature limit and offset resources. Document the chip in the
hwmon guide.

Signed-off-by: benoit.masson <yahoo@perenite.com>
Signed-off-by: Jerome Tollet <jerome.tollet@gmail.com>
Link: https://patch.msgid.link/5afd336442307450f77467b2a749d405970a2099.1788040385.git.jerome.tollet@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
benoit.masson 2026-08-30 00:01:49 +02:00 committed by Guenter Roeck
parent ab003112b4
commit 600a85f556
2 changed files with 69 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Documentation/hwmon/it87.rst
View File

@ -11,6 +11,14 @@ Supported chips:
Datasheet: Not publicly available
* IT8613E
Prefix: 'it8613'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8620E
Prefix: 'it8620'

63
drivers/hwmon/it87.c
View File

@ -36,6 +36,7 @@
* IT8790E Super I/O chip w/LPC interface
* IT8792E Super I/O chip w/LPC interface
* IT87952E Super I/O chip w/LPC interface
* IT8613E Super I/O chip w/LPC interface
* Sis950 A clone of the IT8705F
*
* Copyright (C) 2001 Chris Gauthron
@ -65,7 +66,7 @@
enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
it8771, it8772, it8781, it8782, it8783, it8786, it8790,
it8792, it8603, it8620, it8622, it8628, it8689, it87952 };
it8792, it8603, it8613, it8620, it8622, it8628, it8689, it87952 };
static struct platform_device *it87_pdev[2];
@ -159,6 +160,7 @@ static inline void superio_exit(int ioreg, bool noexit)
#define IT8786E_DEVID 0x8786
#define IT8790E_DEVID 0x8790
#define IT8603E_DEVID 0x8603
#define IT8613E_DEVID 0x8613
#define IT8620E_DEVID 0x8620
#define IT8622E_DEVID 0x8622
#define IT8623E_DEVID 0x8623
@ -333,6 +335,7 @@ struct it87_devices {
#define FEAT_FOUR_TEMP BIT(22)
#define FEAT_FANCTL_ONOFF BIT(23) /* chip has FAN_CTL ON/OFF */
#define FEAT_NEW_TEMPMAP BIT(24) /* PWM uses extended temp map */
#define FEAT_11MV_ADC BIT(25)
static const struct it87_devices it87_devices[] = {
[it87] = {
@ -515,6 +518,18 @@ static const struct it87_devices it87_devices[] = {
.num_temp_map = 4,
.peci_mask = 0x07,
},
[it8613] = {
.name = "it8613",
.model = "IT8613E",
/* Only three temperature inputs are currently known. */
.features = FEAT_NEWER_AUTOPWM | FEAT_11MV_ADC | FEAT_16BIT_FANS
| FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS
| FEAT_FIVE_PWM | FEAT_IN7_INTERNAL | FEAT_PWM_FREQ2
| FEAT_AVCC3 | FEAT_NEW_TEMPMAP,
.reg_pwm = IT87_REG_PWM_8665,
.num_temp_map = 6,
.peci_mask = 0x07,
},
[it8620] = {
.name = "it8620",
.model = "IT8620E",
@ -577,6 +592,7 @@ 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_11mv_adc(data) ((data)->features & FEAT_11MV_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)
@ -607,7 +623,8 @@ static const struct it87_devices it87_devices[] = {
#define has_vin3_5v(data) ((data)->features & FEAT_VIN3_5V)
#define has_noconf(data) ((data)->features & FEAT_NOCONF)
#define has_scaling(data) ((data)->features & (FEAT_12MV_ADC | \
FEAT_10_9MV_ADC))
FEAT_10_9MV_ADC | \
FEAT_11MV_ADC))
#define has_fanctl_onoff(data) ((data)->features & FEAT_FANCTL_ONOFF)
#define has_new_tempmap(data) ((data)->features & FEAT_NEW_TEMPMAP)
@ -712,6 +729,8 @@ static int adc_lsb(const struct it87_data *data, int nr)
lsb = 120;
else if (has_10_9mv_adc(data))
lsb = 109;
else if (has_11mv_adc(data))
lsb = 110;
else
lsb = 160;
if (data->in_scaled & BIT(nr))
@ -2919,6 +2938,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
case IT8623E_DEVID:
sio_data->type = it8603;
break;
case IT8613E_DEVID:
sio_data->type = it8613;
break;
case IT8620E_DEVID:
sio_data->type = it8620;
break;
@ -3096,6 +3118,43 @@ static int __init it87_find(int sioaddr, unsigned short *address,
sio_data->skip_in |= BIT(5); /* No VIN5 */
sio_data->skip_in |= BIT(6); /* No VIN6 */
sio_data->beep_pin = superio_inb(sioaddr,
IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else if (sio_data->type == it8613) {
int reg27, reg29, reg2a;
superio_select(sioaddr, GPIO);
/* Check for pwm3, fan3, pwm5, fan5 */
reg27 = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
if (!(reg27 & BIT(1)))
sio_data->skip_fan |= BIT(4);
if (reg27 & BIT(3))
sio_data->skip_pwm |= BIT(4);
if (reg27 & BIT(6))
sio_data->skip_pwm |= BIT(2);
if (reg27 & BIT(7))
sio_data->skip_fan |= BIT(2);
/* Check for pwm2, fan2 */
reg29 = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
if (reg29 & BIT(1))
sio_data->skip_pwm |= BIT(1);
if (reg29 & BIT(2))
sio_data->skip_fan |= BIT(1);
/* Check for pwm4, fan4 */
reg2a = superio_inb(sioaddr, IT87_SIO_PINX1_REG);
if (!(reg2a & BIT(0)) || (reg29 & BIT(7))) {
sio_data->skip_fan |= BIT(3);
sio_data->skip_pwm |= BIT(3);
}
sio_data->skip_pwm |= BIT(0); /* No pwm1 */
sio_data->skip_fan |= BIT(0); /* No fan1 */
sio_data->skip_in |= BIT(3); /* No VIN3 */
sio_data->skip_in |= BIT(6); /* No VIN6 */
sio_data->beep_pin = superio_inb(sioaddr,
IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else if (sio_data->type == it8620 || sio_data->type == it8628) {