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/*
* This file is part of the coreboot project.
*
* 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 */
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