1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <console/console.h>
4 #include <device/i2c_simple.h>
5 #include <soc/da9212.h>
6
7 enum {
8 DA9212_SLAVE_ADDR = 0x68,
9 };
10
da9212_hw_init(uint8_t i2c_num,unsigned char variant_id)11 static void da9212_hw_init(uint8_t i2c_num, unsigned char variant_id)
12 {
13 int ret = 0;
14 int buck_mode = DA9212_BUCK_MODE_AUTO;
15
16 if (variant_id == DA9212_VARIANT_ID_AB)
17 buck_mode = DA9212_BUCK_MODE_PWM;
18
19 /* page select to 0 */
20 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
21 DA9212_REG_PAGE_CON, DA9212_REG_PAGE0,
22 DA9212_REG_PAGE_MASK, DA9212_REG_PAGE_SHIFT);
23
24 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
25 DA9212_REG_BUCKA_CONT, DA9212_BUCK_GPI_GPIO1,
26 DA9212_BUCK_GPI_MASK, DA9212_BUCK_GPI_SHIFT);
27
28 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
29 DA9212_REG_BUCKB_CONT, DA9212_BUCK_GPI_OFF,
30 DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_SHIFT);
31
32 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
33 DA9212_REG_BUCKA_CONT, DA9212_VBUCK_SEL_A,
34 DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
35
36 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
37 DA9212_REG_BUCKB_CONT, DA9212_VBUCK_SEL_A,
38 DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
39
40 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
41 DA9212_REG_BUCKA_CONF, buck_mode,
42 DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
43
44 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
45 DA9212_REG_BUCKB_CONF, buck_mode,
46 DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
47
48 if (ret)
49 printk(BIOS_ERR, "%s failed\n", __func__);
50 }
51
da9212_probe(uint8_t i2c_num)52 void da9212_probe(uint8_t i2c_num)
53 {
54 int ret = 0;
55 unsigned char device_id = 0;
56 unsigned char variant_id = 0;
57
58 /* select to page 4, clear REVERT at first time */
59 ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
60 DA9212_REG_PAGE_CON, DA9212_REG_PAGE4,
61 0xF, DA9212_REG_PAGE_SHIFT);
62
63 ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
64 DA9212_REG_DEVICE_ID, &device_id,
65 0xFF, 0);
66
67 ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
68 DA9212_REG_VARIANT_ID, &variant_id,
69 0xFF, 0);
70
71 printk(BIOS_INFO, "%s: device ID = %#x, variant ID = %#x\n", __func__,
72 device_id, variant_id);
73
74 /* Check device ID is DA9212 */
75 if (device_id != DA9212_ID || ret) {
76 printk(BIOS_ERR, "unknown DA9212 device_id\n");
77 return;
78 }
79
80 da9212_hw_init(i2c_num, variant_id);
81 }
82