Matt DeVillier (matt.devillier@gmail.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/12798
-gerrit
commit 16b8fe82a1285ae4fc4c8193ef7cce96d4c3979b Author: Ted Kuo tedkuo@ami.com.tw Date: Wed Mar 18 10:42:22 2015 +0800
superio/it8772f: Add switch to enable HWM (Hardware Monitor)
Set up External Temperature to read via thermal diode/resistor into TMPINx register by setting thermal_mode switch.
Signed-off-by: Ted Kuo tedkuo@ami.com.tw
Change-Id: I0e8621b92faa5c6246e009d2f852c8d4db484034 Reviewed-on: https://chromium-review.googlesource.com/260545 Reviewed-by: Shawn N shawnn@chromium.org Commit-Queue: Ted Kuo tedkuo@ami.com.tw Tested-by: Ted Kuo tedkuo@ami.com.tw (cherry picked from commit 973e2d393f2595b756f8aa20f6fbe3b6e045621a) Reviewed-on: https://chromium-review.googlesource.com/262340 Signed-off-by: Matt DeVillier matt.devillier@gmail.com --- src/superio/ite/it8772f/chip.h | 7 +++++++ src/superio/ite/it8772f/it8772f.h | 8 +++++++ src/superio/ite/it8772f/superio.c | 44 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+)
diff --git a/src/superio/ite/it8772f/chip.h b/src/superio/ite/it8772f/chip.h index 78ded22..0d80fb8 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 <device/device.h> +#include "it8772f.h"
struct superio_ite_it8772f_config { /* GPIO SimpleIO register values via devicetree.cb */ @@ -37,6 +38,12 @@ 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. */ u8 fan1_enable; diff --git a/src/superio/ite/it8772f/it8772f.h b/src/superio/ite/it8772f/it8772f.h index 8e82bef..2031fff 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 6c6a503..89f7cff 100644 --- a/src/superio/ite/it8772f/superio.c +++ b/src/superio/ite/it8772f/superio.c @@ -16,6 +16,7 @@
#include <device/device.h> #include <device/pnp.h> +#include <console/console.h> #include <pc80/keyboard.h> #include <arch/io.h> #include <delay.h> @@ -97,6 +98,43 @@ static void it8772f_enable_peci(struct resource *res, int tmpin) }
/* + * 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 */ static void it8772f_enable_fan(struct resource *res, int fan) @@ -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);