diff --git a/src/superio/ite/it8772f/chip.h b/src/superio/ite/it8772f/chip.h index 78ded22b5d..0d80fb833c 100644 --- a/src/superio/ite/it8772f/chip.h +++ b/src/superio/ite/it8772f/chip.h @@ -18,6 +18,7 @@ #define SUPERIO_ITE_IT8772F_CHIP_H #include +#include "it8772f.h" struct superio_ite_it8772f_config { /* GPIO SimpleIO register values via devicetree.cb */ @@ -36,6 +37,12 @@ struct superio_ite_it8772f_config { */ u8 peci_tmpin; + /* + * Enable thermal mode on tmpinx. + */ + enum thermal_mode tmpin1_mode; + enum thermal_mode tmpin2_mode; + /* * Enable a FAN for sofware control. */ diff --git a/src/superio/ite/it8772f/it8772f.h b/src/superio/ite/it8772f/it8772f.h index 8e82bef6ab..2031fffda8 100644 --- a/src/superio/ite/it8772f/it8772f.h +++ b/src/superio/ite/it8772f/it8772f.h @@ -17,6 +17,13 @@ #ifndef SUPERIO_ITE_IT8772F_H #define SUPERIO_ITE_IT8772F_H +/* Supported thermal mode on TMPINx */ +enum thermal_mode { + THERMAL_MODE_DISABLED = 0, + THERMAL_DIODE, + THERMAL_RESISTOR, +}; + #define IT8772F_FDC 0x00 /* Floppy disk controller */ #define IT8772F_SP1 0x01 /* Com1 */ #define IT8772F_EC 0x04 /* Environment controller */ @@ -26,6 +33,7 @@ #define IT8772F_IR 0x0a /* Consumer IR */ /* Environmental Controller interface */ +#define IT8772F_CONFIGURATION 0x00 #define IT8772F_INTERFACE_SELECT 0x0a #define IT8772F_INTERFACE_PSEUDO_EOC (1 << 7) #define IT8772F_INTERFACE_SMB_ENABLE (1 << 6) diff --git a/src/superio/ite/it8772f/superio.c b/src/superio/ite/it8772f/superio.c index 7079b1a829..2d897d83ba 100644 --- a/src/superio/ite/it8772f/superio.c +++ b/src/superio/ite/it8772f/superio.c @@ -16,6 +16,7 @@ #include #include +#include #include #include #include @@ -96,6 +97,43 @@ static void it8772f_enable_peci(struct resource *res, int tmpin) (tmpin & 3) << 6); } +/* + * Set up External Temperature to read via thermal diode/resistor + * into TMPINx register + */ +static void it8772f_enable_tmpin(struct resource *res, int tmpin, + enum thermal_mode mode) +{ + u8 reg; + + if (tmpin != 1 && tmpin != 2) + return; + + reg = it8772f_envc_read(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE); + + switch (mode) { + case THERMAL_DIODE: + /* Thermal Diode Mode */ + it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE, + reg | tmpin); + break; + case THERMAL_RESISTOR: + /* Thermal Resistor Mode */ + it8772f_envc_write(res, IT8772F_ADC_TEMP_CHANNEL_ENABLE, + reg | (tmpin << 3)); + break; + default: + printk(BIOS_ERR, "Unsupported thermal mode 0x%x on TMPIN%d\n", + mode, tmpin); + return; + } + + reg = it8772f_envc_read(res, IT8772F_CONFIGURATION); + + /* Enable the startup of monitoring operation */ + it8772f_envc_write(res, IT8772F_CONFIGURATION, reg | 0x01); +} + /* * Setup a FAN PWM interface for software control */ @@ -160,6 +198,12 @@ static void it8772f_init(struct device *dev) /* Enable PECI if configured */ it8772f_enable_peci(res, conf->peci_tmpin); + /* Enable HWM if configured */ + if (conf->tmpin1_mode != THERMAL_MODE_DISABLED) + it8772f_enable_tmpin(res, 1, conf->tmpin1_mode); + if (conf->tmpin2_mode != THERMAL_MODE_DISABLED) + it8772f_enable_tmpin(res, 2, conf->tmpin2_mode); + /* Enable FANx if configured */ if (conf->fan1_enable) it8772f_enable_fan(res, 1);