nct7802y.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#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 MODE_SELECTION                  0x22
#define  MODE_SELECTION_LTD_EN          (1 << 6)
#define  MODE_SELECTION_RTDx(x, val)    ((val) << (x) * 2)
 
#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 */