src/drivers/i2c/nct7802y/nct7802y.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef DRIVERS_I2C_NCT7802Y_H
   4 #define DRIVERS_I2C_NCT7802Y_H
   5
   6 #include <types.h>
   7 #include <console/console.h>
   8 #include <device/device.h>
   9 #include <device/i2c_bus.h>
  10
  11 #define BANK_SELECT                     0x00
  12
  13 /* Bank 0 */
  14 #define MODE_SELECTION                  0x22
  15 #define  MODE_SELECTION_LTD_EN          (1 << 6)
  16 #define  MODE_SELECTION_RTDx(x, val)    ((val) << (x) * 2)
  17
  18 #define PECI_ENABLE                     0x23
  19 #define  PECI_ENABLE_AGENTx(x)          (1 << (x))
  20
  21 #define FAN_ENABLE                      0x24
  22 #define  FANx_ENABLE(fan)               (1 << (fan))
  23
  24 #define FAN_CTRL(fan)                   (0x60 + (fan))
  25
  26 #define CLOSE_LOOP_FAN_RPM_CTRL         0x63
  27 #define  CLOSE_LOOP_FANx_EN(fan)        (1 << ((fan) + 5))
  28 #define  CLOSE_LOOP_FANx_HIGH_RPM(fan)  (1 << ((fan) + 2))
  29 #define  CLOSE_LOOP_FAN_PECI_ERR_MASK   (3 << 0)
  30 #define  CLOSE_LOOP_FAN_PECI_ERR_CURR   (0 << 0)
  31 #define  CLOSE_LOOP_FAN_PECI_ERR_VALUE  (1 << 0)
  32 #define  CLOSE_LOOP_FAN_PECI_ERR_MAX    (2 << 0)
  33
  34 #define TEMP_SHIFT(temp) (((temp) % 2) * 4)
  35 #define TEMP_TO_FAN_MAP(temp)           (0x64 + (temp) / 2)
  36 #define  TEMPx_TO_FAN_MAP_MASK(temp)    (7 << TEMP_SHIFT(temp))
  37 #define  TEMPx_TO_FANy_MAP(temp, fan)   (1 << (TEMP_SHIFT(temp) + (fan)))
  38
  39 #define FAN_CTRL_TEMP_SRC(temp)         (0x68 + (temp) / 2)
  40 #define  FAN_CTRL_TEMPx_SRC_MASK(temp)  (7 << TEMP_SHIFT(temp))
  41 #define  FAN_CTRL_TEMPx_SRCy(temp, src) ((src) << TEMP_SHIFT(temp))
  42
  43 #define FAN_DUTY_ON_PECI_ERROR          0x7a
  44
  45 #define TABLEx_TEMP_POINTy(fan, pt)     (0x80 + (0x10 * (fan)) + (pt))
  46 #define TABLEx_TARGET_POINTy(fan, pt)   (0x85 + (0x10 * (fan)) + (pt))
  47
  48 /* Bank 1 */
  49
  50 #define PECI_CTRL_1                     0x01
  51 #define  PECI_CTRL_1_EN                 (1 << 7)
  52 #define  PECI_CTRL_1_MANUAL_EN          (1 << 1)
  53 #define  PECI_CTRL_1_ROUTINE_EN         (1 << 0)
  54
  55 #define PECI_CTRL_3                     0x03
  56 #define  PECI_CTRL_3_EN_AGENTx(x)       (1 << ((x) + 4))
  57 #define  PECI_CTRL_3_HAS_DOM1_AGENTx(x) (1 << (x))
  58
  59 #define PECI_REPORT_TEMP_STYLE          0x04
  60 #define  PECI_TEMP_STYLE_DOM0_AGENTx(x) (0 << ((x) + 1))
  61 #define  PECI_TEMP_STYLE_DOM1_AGENTx(x) (1 << ((x) + 1))
  62 #define  PECI_TEMP_STYLE_SINGLE         (0 << 0)
  63 #define  PECI_TEMP_STYLE_HIGHEST        (1 << 0)
  64
  65 #define PECI_BASE_TEMP_AGENT(x)         (0x09 + (x))
  66 #define  PECI_BASE_TEMP_MAX             (0x7f << 0)
  67
  68 static inline int nct7802y_select_bank(struct device *const dev, const u8 bank)
  69 {
  70         const int ret = i2c_dev_writeb_at(dev, BANK_SELECT, bank);
  71         if (ret != CB_SUCCESS)
  72                 printk(BIOS_NOTICE, "nct7802y: Select bank failed: %d\n", ret);
  73         return ret;
  74 }
  75
  76 static inline int nct7802y_write(struct device *const dev,
  77                                  const u8 reg, const u8 value)
  78 {
  79         return i2c_dev_writeb_at(dev, reg, value);
  80 }
  81
  82 static inline int nct7802y_update(struct device *const dev, const u8 reg,
  83                                   const u8 clear_mask, const u8 set_mask)
  84 {
  85         const int val = i2c_dev_readb_at(dev, reg);
  86         if (val < 0)
  87                 return val;
  88         return i2c_dev_writeb_at(dev, reg, (val & ~clear_mask) | set_mask);
  89 }
  90
  91 void nct7802y_init_fan(struct device *dev);
  92 void nct7802y_init_peci(struct device *dev);
  93
  94 #endif /* DRIVERS_I2C_NCT7802Y_H */