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Diffstat (limited to 'src/drivers/i2c/nct7802y/nct7802y.h')
| -rw-r--r-- | src/drivers/i2c/nct7802y/nct7802y.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/drivers/i2c/nct7802y/nct7802y.h b/src/drivers/i2c/nct7802y/nct7802y.h new file mode 100644 index 0000000000..16a16840f3 --- /dev/null +++ b/src/drivers/i2c/nct7802y/nct7802y.h @@ -0,0 +1,104 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 secunet Security Networks AG + * + * 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. + */ + +#ifndef DRIVERS_I2C_NCT7802Y_H +#define DRIVERS_I2C_NCT7802Y_H + +#include <types.h> +#include <console/console.h> +#include <device/device.h> +#include <device/i2c_bus.h> + +#define BANK_SELECT 0x00 + +/* Bank 0 */ + +#define PECI_ENABLE 0x23 +#define PECI_ENABLE_AGENTx(x) (1 << (x)) + +#define FAN_ENABLE 0x24 +#define FANx_ENABLE(fan) (1 << (fan)) + +#define FAN_CTRL(fan) (0x60 + (fan)) + +#define CLOSE_LOOP_FAN_RPM_CTRL 0x63 +#define CLOSE_LOOP_FANx_EN(fan) (1 << ((fan) + 5)) +#define CLOSE_LOOP_FANx_HIGH_RPM(fan) (1 << ((fan) + 2)) +#define CLOSE_LOOP_FAN_PECI_ERR_MASK (3 << 0) +#define CLOSE_LOOP_FAN_PECI_ERR_CURR (0 << 0) +#define CLOSE_LOOP_FAN_PECI_ERR_VALUE (1 << 0) +#define CLOSE_LOOP_FAN_PECI_ERR_MAX (2 << 0) + +#define TEMP_SHIFT(temp) (((temp) % 2) * 4) +#define TEMP_TO_FAN_MAP(temp) (0x64 + (temp) / 2) +#define TEMPx_TO_FAN_MAP_MASK(temp) (7 << TEMP_SHIFT(temp)) +#define TEMPx_TO_FANy_MAP(temp, fan) (1 << (TEMP_SHIFT(temp) + (fan))) + +#define FAN_CTRL_TEMP_SRC(temp) (0x68 + (temp) / 2) +#define FAN_CTRL_TEMPx_SRC_MASK(temp) (7 << TEMP_SHIFT(temp)) +#define FAN_CTRL_TEMPx_SRCy(temp, src) ((src) << TEMP_SHIFT(temp)) + +#define FAN_DUTY_ON_PECI_ERROR 0x7a + +#define TABLEx_TEMP_POINTy(fan, pt) (0x80 + (0x10 * (fan)) + (pt)) +#define TABLEx_TARGET_POINTy(fan, pt) (0x85 + (0x10 * (fan)) + (pt)) + +/* Bank 1 */ + +#define PECI_CTRL_1 0x01 +#define PECI_CTRL_1_EN (1 << 7) +#define PECI_CTRL_1_MANUAL_EN (1 << 1) +#define PECI_CTRL_1_ROUTINE_EN (1 << 0) + +#define PECI_CTRL_3 0x03 +#define PECI_CTRL_3_EN_AGENTx(x) (1 << ((x) + 4)) +#define PECI_CTRL_3_HAS_DOM1_AGENTx(x) (1 << (x)) + +#define PECI_REPORT_TEMP_STYLE 0x04 +#define PECI_TEMP_STYLE_DOM0_AGENTx(x) (0 << ((x) + 1)) +#define PECI_TEMP_STYLE_DOM1_AGENTx(x) (1 << ((x) + 1)) +#define PECI_TEMP_STYLE_SINGLE (0 << 0) +#define PECI_TEMP_STYLE_HIGHEST (1 << 0) + +#define PECI_BASE_TEMP_AGENT(x) (0x09 + (x)) +#define PECI_BASE_TEMP_MAX (0x7f << 0) + +static inline int nct7802y_select_bank(struct device *const dev, const u8 bank) +{ + const int ret = i2c_dev_writeb_at(dev, BANK_SELECT, bank); + if (ret != CB_SUCCESS) + printk(BIOS_NOTICE, "nct7802y: Select bank failed: %d\n", ret); + return ret; +} + +static inline int nct7802y_write(struct device *const dev, + const u8 reg, const u8 value) +{ + return i2c_dev_writeb_at(dev, reg, value); +} + +static inline int nct7802y_update(struct device *const dev, const u8 reg, + const u8 clear_mask, const u8 set_mask) +{ + const int val = i2c_dev_readb_at(dev, reg); + if (val < 0) + return val; + return i2c_dev_writeb_at(dev, reg, (val & ~clear_mask) | set_mask); +} + +void nct7802y_init_fan(struct device *dev); +void nct7802y_init_peci(struct device *dev); + +#endif /* DRIVERS_I2C_NCT7802Y_H */ |