linux-kernel - [PATCH v3 5/5] hwmon: it87: add IT8613E configuration

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Message-ID: <20260110012613.48150-5-yahoo@perenite.com>
Date: Sat, 10 Jan 2026 02:26:13 +0100
From: "benoit.masson" <yahoo@...enite.com>
To: Jean Delvare <jdelvare@...e.com>
Cc: Guenter Roeck <linux@...ck-us.net>,
	linux-hwmon@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"benoit.masson" <yahoo@...enite.com>
Subject: [PATCH v3 5/5] hwmon: it87: add IT8613E configuration

Add IT8613E feature flags, resource counts, ADC scaling, and GPIO
quirk handling, then document the chip in the hwmon guide.

Signed-off-by: benoit.masson <yahoo@...enite.com>
---
 Documentation/hwmon/it87.rst |  8 ++++++
 drivers/hwmon/it87.c         | 52 +++++++++++++++++++++++++++++++++++-
 2 files changed, 59 insertions(+), 1 deletion(-)

diff --git a/Documentation/hwmon/it87.rst b/Documentation/hwmon/it87.rst
index 5cef4f265000..fa968be84f7c 100644
--- a/Documentation/hwmon/it87.rst
+++ b/Documentation/hwmon/it87.rst
@@ -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'
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 1f4936c0e746..746ea9279efc 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -336,6 +336,7 @@ 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] = {
@@ -487,6 +488,14 @@ static const struct it87_devices it87_devices[] = {
 	[it8613] = {
 		.name = "it8613",
 		.model = "IT8613E",
+		.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,
+		.num_temp_limit = 6,
+		.num_temp_offset = 6,
+		.num_temp_map = 6,
+		.peci_mask = 0x07,
 	},
 	[it8620] = {
 		.name = "it8620",
@@ -531,6 +540,7 @@ 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)
@@ -561,7 +571,8 @@ 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)
 
@@ -667,6 +678,8 @@ 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))
@@ -3095,6 +3108,43 @@ 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) {
-- 
2.50.1 (Apple Git-155)