--- /dev/null
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdint.h>
+#include <arch/cpu.h>
+#include <console/console.h>
+#include <device/device.h>
+#include "southbridge/amd/cimx/sb700/smbus.h" /*SMBUS_IO_BASE*/
+#include "w83795.h"
+
+static u32 w83795_set_bank(u8 bank)
+{
+ return do_smbus_write_byte(SMBUS_IO_BASE, W83795_DEV, W83795_REG_BANKSEL, bank);
+}
+
+static u8 w83795_read(u16 reg)
+{
+ u32 ret;
+
+ ret = w83795_set_bank(reg >> 8);
+ if (ret < 0) {
+ printk(BIOS_DEBUG, "read faild to set bank %x\n", reg >> 8);
+ return -1;
+ }
+
+ ret = do_smbus_read_byte(SMBUS_IO_BASE, W83795_DEV, reg & 0xff);
+ return ret;
+}
+
+static u8 w83795_write(u16 reg, u8 value)
+{
+ u32 err;
+
+ err = w83795_set_bank(reg >> 8);
+ if (err < 0) {
+ printk(BIOS_DEBUG, "write faild to set bank %x\n", reg >> 8);
+ return -1;
+ }
+
+ err = do_smbus_write_byte(SMBUS_IO_BASE, W83795_DEV, reg & 0xff, value);
+ return err;
+}
+
+/*
+ * Enable Digital Temperature Sensor
+ */
+static void w83795_dts_enable(u8 dts_src)
+{
+ u8 val;
+
+ /* DIS */
+ val = w83795_read(W83795_REG_DTSC);
+ val |= (dts_src & 0x01);
+ w83795_write(W83795_REG_DTSC, val);
+
+ /* DTSE */
+ val = w83795_read(W83795_REG_DTSE);
+ val |= 0xFF;
+ w83795_write(W83795_REG_DTSE, val);
+
+ /* store bank3 regs first before enable DTS */
+
+ /*
+ * TD/TR1-4 termal diode by default
+ * 0x00 Disable
+ * 0x01 thermistors on motherboard
+ * 0x10 different mode voltage
+ * 0x11 CPU internal thermal diode output
+ *
+ * TR5-6 thermistors by default TRn
+ */
+ val = 0x55; /* thermal diode */
+ w83795_write(W83795_REG_TEMP_CTRL2, val);
+
+ /* Enable Digital Temperature Sensor */
+ val = w83795_read(W83795_REG_TEMP_CTRL1);
+ val |= W83795_REG_TEMP_CTRL1_EN_DTS; /* EN_DTS */
+ w83795_write(W83795_REG_TEMP_CTRL1, val);
+}
+
+static void w83795_set_tfmr(w83795_fan_mode_t mode)
+{
+ u8 val;
+ u8 i;
+
+ if ((mode == SMART_FAN_MODE) || (mode == THERMAL_CRUISE_MODE)) {
+ val = 0xFF;
+ } else {
+ val = 0x00;
+ }
+
+ for (i = 0; i < 6; i++)
+ w83795_write(W83795_REG_TFMR(i), val);
+}
+
+static u32 w83795_set_fan_mode(w83795_fan_mode_t mode)
+{
+ if (mode == SPEED_CRUISE_MODE) {
+ w83795_write(W83795_REG_FCMS1, 0xFF);
+ printk(BIOS_INFO, "W83795G/ADG work in Speed Cruise Mode\n");
+ } else {
+ w83795_write(W83795_REG_FCMS1, 0x00);
+ if (mode == THERMAL_CRUISE_MODE) {
+ w83795_write(W83795_REG_FCMS2, 0x00);
+ printk(BIOS_INFO, "W83795G/ADG work in Thermal Cruise Mode\n");
+ } else if (mode == SMART_FAN_MODE) {
+ w83795_write(W83795_REG_FCMS2, 0x3F);
+ printk(BIOS_INFO, "W83795G/ADG work in Smart Fan Mode\n");
+ } else {
+ printk(BIOS_INFO, "W83795G/ADG work in Manual Mode\n");
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static void w83795_set_tss(void)
+{
+ u8 val;
+
+ val = 0x00;
+ w83795_write(W83795_REG_TSS(0), val); /* Temp1, 2 */
+ w83795_write(W83795_REG_TSS(1), val); /* Temp3, 4 */
+ w83795_write(W83795_REG_TSS(2), val); /* Temp5, 6 */
+}
+
+static void w83795_set_fan(w83795_fan_mode_t mode)
+{
+ u8 i;
+
+ /* select temperature sensor (TSS)*/
+ w83795_set_tss();
+
+ /* select Temperature to Fan mapping Relationships (TFMR)*/
+ w83795_set_tfmr(mode);
+
+ /* set fan output controlled mode (FCMS)*/
+ w83795_set_fan_mode(mode);
+
+ /* Set Critical Temperature to Full Speed all fan (CTFS) */
+ for (i = 0; i < 6; i++) {
+ w83795_write(W83795_REG_CTFS(i), 0x50); /* default 80 celsius degree */
+ }
+
+ if (mode == THERMAL_CRUISE_MODE) {
+ /* Set Target Temperature of Temperature Inputs (TTTI) */
+ for (i = 0; i < 6; i++) {
+ w83795_write(W83795_REG_TTTI(i), 0x28); /* default 40 celsius degree */
+ }
+ } else if (mode == SMART_FAN_MODE) {
+ /* Set the Relative Register-at SMART FAN IV Control Mode Table */
+ //SFIV TODO
+ }
+
+ /* Set Hystersis of Temperature (HT) */
+ //TODO
+}
+
+static void w83795_init(w83795_fan_mode_t mode, u8 dts_src)
+{
+ u8 i;
+ u8 val;
+
+ if (do_smbus_read_byte(SMBUS_IO_BASE, W83795_DEV, 0x00) < 0) {
+ printk(BIOS_ERR, "W83795G/ADG Nuvoton H/W Monitor not found\n");
+ return;
+ }
+ val = w83795_read(W83795_REG_CONFIG);
+ if ((val & W83795_REG_CONFIG_CONFIG48) == 0)
+ printk(BIOS_INFO, "Found 64 pin W83795G Nuvoton H/W Monitor\n");
+ else if ((val & W83795_REG_CONFIG_CONFIG48) == 1)
+ printk(BIOS_INFO, "Found 48 pin W83795ADG Nuvoton H/W Monitor\n");
+
+ /* Reset */
+ val |= W83795_REG_CONFIG_INIT;
+ w83795_write(W83795_REG_CONFIG, val);
+
+ /* Fan monitoring setting */
+ val = 0xFF; /* FAN1-FAN8 */
+ w83795_write(W83795_REG_FANIN_CTRL1, val);
+ val = 0x3F; /* FAN9-FAN14 */
+ w83795_write(W83795_REG_FANIN_CTRL2, val);
+
+ /* enable monitoring operations */
+ val = w83795_read(W83795_REG_CONFIG);
+ val |= W83795_REG_CONFIG_START;
+ w83795_write(W83795_REG_CONFIG, val);
+
+ w83795_dts_enable(dts_src);
+ w83795_set_fan(mode);
+
+ printk(BIOS_INFO, "Fan CTFS(celsius) TTTI(celsius)\n");
+ for (i = 0; i < 6; i++) {
+ val = w83795_read(W83795_REG_CTFS(i));
+ printk(BIOS_INFO, " %x %d", i, val);
+ val = w83795_read(W83795_REG_TTTI(i));
+ printk(BIOS_INFO, " %d\n", val);
+ }
+
+ /* Temperature ReadOut */
+ for (i = 0; i < 9; i++) {
+ val = w83795_read(W83795_REG_DTS(i));
+ printk(BIOS_DEBUG, "DTS%x ReadOut=%x \n", i, val);
+ }
+}
+
+static void w83795_hwm_init(device_t dev)
+{
+ struct device *cpu;
+ struct cpu_info *info;
+
+ info = cpu_info();
+ cpu = info->cpu;
+ if (!cpu)
+ die("CPU: missing cpu device structure");
+
+ if (cpu->vendor == X86_VENDOR_AMD)
+ w83795_init(THERMAL_CRUISE_MODE, DTS_SRC_AMD_SBTSI);
+ else if (cpu->vendor == X86_VENDOR_INTEL)
+ w83795_init(THERMAL_CRUISE_MODE, DTS_SRC_INTEL_PECI);
+ else
+ printk(BIOS_ERR, "Neither AMD nor INTEL CPU detected\n");
+}
+
+static void w83795_noop(device_t dummy)
+{
+}
+
+static struct device_operations w83795_operations = {
+ .read_resources = w83795_noop,
+ .set_resources = w83795_noop,
+ .enable_resources = w83795_noop,
+ .init = w83795_hwm_init,
+};
+
+static void enable_dev(device_t dev)
+{
+ dev->ops = &w83795_operations;
+}
+
+struct chip_operations drivers_i2c_w83795_ops = {
+ CHIP_NAME("Nuvoton W83795G/ADG Hardware Monitor")
+ .enable_dev = enable_dev,
+};
--- /dev/null
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _W83795_H_
+#define _W83795_H_
+
+#define W83795_DEV 0x2F /* Host I2c Addr (strap to addr1 addr0 1 1, 0x5E) */
+
+#define W83795_REG_I2C_ADDR 0xFC
+#define W83795_REG_BANKSEL 0x00
+#define W83795_REG_CONFIG 0x01
+#define W83795_REG_CONFIG_START 0x01
+#define W83795_REG_CONFIG_CONFIG48 0x04
+#define W83795_REG_CONFIG_INIT 0x80
+
+#define W83795_REG_TEMP_CTRL1 0x04 /* Temperature Monitoring Control Register */
+#define W83795_REG_TEMP_CTRL2 0x05 /* Temperature Monitoring Control Register */
+#define W83795_REG_FANIN_CTRL1 0x06
+#define W83795_REG_FANIN_CTRL2 0x07
+#define W83795_REG_TEMP_CTRL1_EN_DTS 0x20 /* Enable DTS (Digital Temperature Sensor) interface from INTEL PECI or AMD SB-TSI. */
+#define DTS_SRC_INTEL_PECI (0 << 0)
+#define DTS_SRC_AMD_SBTSI (1 << 0)
+
+#define W83795_REG_TSS(n) (0x209 + (n)) /* Temperature Source Selection Register */
+#define W83795_REG_TTTI(n) (0x260 + (n)) /* tarrget temperature W83795G/ADG will try to tune the fan output to keep */
+#define W83795_REG_CTFS(n) (0x268 + (n)) /* Critical Temperature to Full Speed all fan */
+#define W83795_REG_HT(n) (0x270 + (n)) /* Hystersis of Temperature */
+#define W83795_REG_DTSC 0x301 /* Digital Temperature Sensor Configuration */
+
+#define W83795_REG_DTSE 0x302 /* Digital Temperature Sensor Enable */
+#define W83795_REG_DTS(n) (0x26 + (n))
+#define W83795_REG_VRLSB 0x3C
+
+#define W83795_TEMP_REG_TR1 0x21
+#define W83795_TEMP_REG_TR2 0x22
+#define W83795_TEMP_REG_TR3 0x23
+#define W83795_TEMP_REG_TR4 0x24
+#define W83795_TEMP_REG_TR5 0x1F
+#define W83795_TEMP_REG_TR6 0x20
+
+#define W83795_REG_FCMS1 0x201
+#define W83795_REG_FCMS2 0x208
+#define W83795_REG_TFMR(n) (0x202 + (n)) /*temperature to fam mappig*/
+#define W83795_REG_DFSP 0x20C
+
+#define W83795_REG_FTSH(n) (0x240 + (n) * 2)
+#define W83795_REG_FTSL(n) (0x241 + (n) * 2)
+#define W83795_REG_TFTS 0x250
+
+typedef enum w83795_fan_mode {
+ SPEED_CRUISE_MODE, ///< Fan Speed Cruise mode keeps the fan speed in a specified range
+ THERMAL_CRUISE_MODE, ///< Thermal Cruise mode is an algorithm to control the fan speed to keep the temperature source around the TTTI
+ SMART_FAN_MODE, ///< Smart Fan mode offers 6 slopes to control the fan speed
+ MANUAL_MODE, ///< control manually
+} w83795_fan_mode_t;
+
+#endif
projects / coreboot.git / commitdiff