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
nct7802y_select_bank(struct device * const dev,const u8 bank)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
nct7802y_write(struct device * const dev,const u8 reg,const u8 value)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
nct7802y_update(struct device * const dev,const u8 reg,const u8 clear_mask,const u8 set_mask)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 */
95