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gerrit.cesnet.cz / github / trini / u-boot / 0509efb7e921ca1a274bb6b9702976e74f6b2b67 / . / drivers / power / axp818.c
blob: 3119b64ea16b3efa3b635b7561ea2c630db3d29f [file] [log] [blame]
vishnupatekar813c7372015-11-29 01:07:21 +0800[diff] [blame]1/*
2 * AXP818 driver based on AXP221 driver
3 *
4 *
5 * (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
6 *
7 * Based on axp221.c
8 * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
9 * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
10 *
11 * SPDX-License-Identifier: GPL-2.0+
12 */
13
14#include <common.h>
15#include <errno.h>
16#include <asm/arch/gpio.h>
17#include <asm/arch/pmic_bus.h>
18#include <axp_pmic.h>
19
20static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
21{
22 if (mvolt < min)
23 mvolt = min;
24 else if (mvolt > max)
25 mvolt = max;
26
27 return (mvolt - min) / div;
28}
29
30int axp_set_dcdc1(unsigned int mvolt)
31{
32 int ret;
33 u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
34
35 if (mvolt == 0)
36 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
37 AXP818_OUTPUT_CTRL1_DCDC1_EN);
38
39 ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
40 if (ret)
41 return ret;
42
43 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
44 AXP818_OUTPUT_CTRL1_DCDC1_EN);
45}
46
47int axp_set_dcdc2(unsigned int mvolt)
48{
49 int ret;
50 u8 cfg;
51
52 if (mvolt >= 1220)
53 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
54 else
55 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
56
57 if (mvolt == 0)
58 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
59 AXP818_OUTPUT_CTRL1_DCDC2_EN);
60
61 ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
62 if (ret)
63 return ret;
64
65 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
66 AXP818_OUTPUT_CTRL1_DCDC2_EN);
67}
68
69int axp_set_dcdc3(unsigned int mvolt)
70{
71 int ret;
72 u8 cfg;
73
74 if (mvolt >= 1220)
75 cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
76 else
77 cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
78
79 if (mvolt == 0)
80 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
81 AXP818_OUTPUT_CTRL1_DCDC3_EN);
82
83 ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
84 if (ret)
85 return ret;
86
87 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
88 AXP818_OUTPUT_CTRL1_DCDC3_EN);
89}
90
91int axp_set_dcdc5(unsigned int mvolt)
92{
93 int ret;
94 u8 cfg;
95
96 if (mvolt >= 1140)
97 cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
98 else
99 cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
100
101 if (mvolt == 0)
102 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
103 AXP818_OUTPUT_CTRL1_DCDC5_EN);
104
105 ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
106 if (ret)
107 return ret;
108
109 return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
110 AXP818_OUTPUT_CTRL1_DCDC5_EN);
111}
112
Chen-Yu Tsai0509efb2016-01-12 14:42:38 +0800[diff] [blame^]113int axp_set_dldo(int dldo_num, unsigned int mvolt)
114{
115 int ret;
116 u8 cfg;
117
118 if (dldo_num < 1 || dldo_num > 4)
119 return -EINVAL;
120
121 if (mvolt == 0)
122 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
123 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
124
125 cfg = axp818_mvolt_to_cfg(mvolt, 700, 3300, 100);
126 if (dldo_num == 2 && mvolt > 3300)
127 cfg += 1 + axp818_mvolt_to_cfg(mvolt, 3400, 4200, 200);
128 ret = pmic_bus_write(AXP818_ELDO1_CTRL + (dldo_num - 1), cfg);
129 if (ret)
130 return ret;
131
132 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
133 AXP818_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
134}
135
136int axp_set_eldo(int eldo_num, unsigned int mvolt)
137{
138 int ret;
139 u8 cfg;
140
141 if (eldo_num < 1 || eldo_num > 3)
142 return -EINVAL;
143
144 if (mvolt == 0)
145 return pmic_bus_clrbits(AXP818_OUTPUT_CTRL2,
146 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
147
148 cfg = axp818_mvolt_to_cfg(mvolt, 700, 1900, 50);
149 ret = pmic_bus_write(AXP818_ELDO1_CTRL + (eldo_num - 1), cfg);
150 if (ret)
151 return ret;
152
153 return pmic_bus_setbits(AXP818_OUTPUT_CTRL2,
154 AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
155}
156
vishnupatekar813c7372015-11-29 01:07:21 +0800[diff] [blame]157int axp_init(void)
158{
159 u8 axp_chip_id;
160 int ret;
161
162 ret = pmic_bus_init();
163 if (ret)
164 return ret;
165
166 ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
167 if (ret)
168 return ret;
169
170 if (!(axp_chip_id == 0x51))
171 return -ENODEV;
172 else
173 return ret;
174
175 return 0;
176}