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e542b7f0 ŁM |
1 | /* |
2 | * Copyright (C) 2011 Samsung Electronics | |
3 | * Lukasz Majewski <l.majewski@samsung.com> | |
4 | * | |
5 | * (C) Copyright 2010 | |
6 | * Stefano Babic, DENX Software Engineering, sbabic@denx.de | |
7 | * | |
8 | * (C) Copyright 2008-2009 Freescale Semiconductor, Inc. | |
9 | * | |
1a459660 | 10 | * SPDX-License-Identifier: GPL-2.0+ |
e542b7f0 ŁM |
11 | */ |
12 | ||
13 | #include <common.h> | |
c7336815 | 14 | #include <malloc.h> |
e542b7f0 | 15 | #include <linux/types.h> |
c7336815 ŁM |
16 | #include <linux/list.h> |
17 | #include <power/pmic.h> | |
e542b7f0 | 18 | |
c7336815 | 19 | static LIST_HEAD(pmic_list); |
e542b7f0 | 20 | |
c7336815 | 21 | int check_reg(struct pmic *p, u32 reg) |
e542b7f0 | 22 | { |
c7336815 | 23 | if (reg >= p->number_of_regs) { |
e542b7f0 | 24 | printf("<reg num> = %d is invalid. Should be less than %d\n", |
c7336815 | 25 | reg, p->number_of_regs); |
505cf475 | 26 | return -EINVAL; |
e542b7f0 | 27 | } |
c7336815 | 28 | |
e542b7f0 ŁM |
29 | return 0; |
30 | } | |
31 | ||
32 | int pmic_set_output(struct pmic *p, u32 reg, int out, int on) | |
33 | { | |
34 | u32 val; | |
35 | ||
36 | if (pmic_reg_read(p, reg, &val)) | |
505cf475 | 37 | return -ENOTSUPP; |
e542b7f0 ŁM |
38 | |
39 | if (on) | |
40 | val |= out; | |
41 | else | |
42 | val &= ~out; | |
43 | ||
44 | if (pmic_reg_write(p, reg, val)) | |
505cf475 | 45 | return -ENOTSUPP; |
e542b7f0 ŁM |
46 | |
47 | return 0; | |
48 | } | |
49 | ||
c7336815 | 50 | struct pmic *pmic_alloc(void) |
e542b7f0 | 51 | { |
c7336815 ŁM |
52 | struct pmic *p; |
53 | ||
54 | p = calloc(sizeof(*p), 1); | |
55 | if (!p) { | |
56 | printf("%s: No available memory for allocation!\n", __func__); | |
57 | return NULL; | |
58 | } | |
59 | ||
60 | list_add_tail(&p->list, &pmic_list); | |
61 | ||
62 | debug("%s: new pmic struct: 0x%p\n", __func__, p); | |
63 | ||
64 | return p; | |
65 | } | |
66 | ||
67 | struct pmic *pmic_get(const char *s) | |
68 | { | |
69 | struct pmic *p; | |
70 | ||
71 | list_for_each_entry(p, &pmic_list, list) { | |
72 | if (strcmp(p->name, s) == 0) { | |
73 | debug("%s: pmic %s -> 0x%p\n", __func__, p->name, p); | |
74 | return p; | |
75 | } | |
76 | } | |
77 | ||
78 | return NULL; | |
79 | } | |
80 | ||
8c0bb858 TR |
81 | #ifndef CONFIG_SPL_BUILD |
82 | static int pmic_dump(struct pmic *p) | |
83 | { | |
84 | int i, ret; | |
85 | u32 val; | |
86 | ||
87 | if (!p) { | |
88 | puts("Wrong PMIC name!\n"); | |
89 | return -ENODEV; | |
90 | } | |
91 | ||
92 | printf("PMIC: %s\n", p->name); | |
93 | for (i = 0; i < p->number_of_regs; i++) { | |
94 | ret = pmic_reg_read(p, i, &val); | |
95 | if (ret) | |
96 | puts("PMIC: Registers dump failed\n"); | |
97 | ||
98 | if (!(i % 8)) | |
99 | printf("\n0x%02x: ", i); | |
100 | ||
101 | printf("%08x ", val); | |
102 | } | |
103 | puts("\n"); | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static const char *power_get_interface(int interface) | |
7d19629f ŁM |
108 | { |
109 | const char *power_interface[] = {"I2C", "SPI", "|+|-|"}; | |
110 | return power_interface[interface]; | |
111 | } | |
112 | ||
c7336815 ŁM |
113 | static void pmic_list_names(void) |
114 | { | |
115 | struct pmic *p; | |
116 | ||
117 | puts("PMIC devices:\n"); | |
118 | list_for_each_entry(p, &pmic_list, list) { | |
7d19629f ŁM |
119 | printf("name: %s bus: %s_%d\n", p->name, |
120 | power_get_interface(p->interface), p->bus); | |
c7336815 | 121 | } |
e542b7f0 ŁM |
122 | } |
123 | ||
8c0bb858 | 124 | static int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
e542b7f0 ŁM |
125 | { |
126 | u32 ret, reg, val; | |
7d19629f | 127 | char *cmd, *name; |
c7336815 | 128 | struct pmic *p; |
e542b7f0 | 129 | |
e542b7f0 ŁM |
130 | /* at least two arguments please */ |
131 | if (argc < 2) | |
c7336815 | 132 | return CMD_RET_USAGE; |
e542b7f0 | 133 | |
7d19629f | 134 | if (strcmp(argv[1], "list") == 0) { |
c7336815 ŁM |
135 | pmic_list_names(); |
136 | return CMD_RET_SUCCESS; | |
137 | } | |
138 | ||
eae74537 ŁM |
139 | if (argc < 3) |
140 | return CMD_RET_USAGE; | |
141 | ||
7d19629f ŁM |
142 | name = argv[1]; |
143 | cmd = argv[2]; | |
144 | ||
145 | debug("%s: name: %s cmd: %s\n", __func__, name, cmd); | |
146 | p = pmic_get(name); | |
147 | if (!p) | |
148 | return CMD_RET_FAILURE; | |
149 | ||
e542b7f0 | 150 | if (strcmp(cmd, "dump") == 0) { |
c7336815 ŁM |
151 | if (pmic_dump(p)) |
152 | return CMD_RET_FAILURE; | |
153 | return CMD_RET_SUCCESS; | |
e542b7f0 ŁM |
154 | } |
155 | ||
156 | if (strcmp(cmd, "read") == 0) { | |
c7336815 ŁM |
157 | if (argc < 4) |
158 | return CMD_RET_USAGE; | |
e542b7f0 | 159 | |
c7336815 | 160 | reg = simple_strtoul(argv[3], NULL, 16); |
e542b7f0 ŁM |
161 | ret = pmic_reg_read(p, reg, &val); |
162 | ||
163 | if (ret) | |
164 | puts("PMIC: Register read failed\n"); | |
165 | ||
166 | printf("\n0x%02x: 0x%08x\n", reg, val); | |
167 | ||
c7336815 | 168 | return CMD_RET_SUCCESS; |
e542b7f0 ŁM |
169 | } |
170 | ||
171 | if (strcmp(cmd, "write") == 0) { | |
c7336815 ŁM |
172 | if (argc < 5) |
173 | return CMD_RET_USAGE; | |
174 | ||
175 | reg = simple_strtoul(argv[3], NULL, 16); | |
176 | val = simple_strtoul(argv[4], NULL, 16); | |
e542b7f0 ŁM |
177 | pmic_reg_write(p, reg, val); |
178 | ||
c7336815 | 179 | return CMD_RET_SUCCESS; |
e542b7f0 ŁM |
180 | } |
181 | ||
7d19629f ŁM |
182 | if (strcmp(cmd, "bat") == 0) { |
183 | if (argc < 4) | |
184 | return CMD_RET_USAGE; | |
185 | ||
a6abaadc PW |
186 | if (!p->pbat) { |
187 | printf("%s is not a battery\n", p->name); | |
188 | return CMD_RET_FAILURE; | |
189 | } | |
190 | ||
7d19629f ŁM |
191 | if (strcmp(argv[3], "state") == 0) |
192 | p->fg->fg_battery_check(p->pbat->fg, p); | |
193 | ||
194 | if (strcmp(argv[3], "charge") == 0) { | |
a6abaadc PW |
195 | printf("BAT: %s charging (ctrl+c to break)\n", |
196 | p->name); | |
197 | if (p->low_power_mode) | |
198 | p->low_power_mode(); | |
199 | if (p->pbat->battery_charge) | |
200 | p->pbat->battery_charge(p); | |
7d19629f ŁM |
201 | } |
202 | ||
203 | return CMD_RET_SUCCESS; | |
204 | } | |
205 | ||
e542b7f0 | 206 | /* No subcommand found */ |
c7336815 | 207 | return CMD_RET_SUCCESS; |
e542b7f0 ŁM |
208 | } |
209 | ||
210 | U_BOOT_CMD( | |
211 | pmic, CONFIG_SYS_MAXARGS, 1, do_pmic, | |
212 | "PMIC", | |
c7336815 | 213 | "list - list available PMICs\n" |
7d19629f | 214 | "pmic name dump - dump named PMIC registers\n" |
c7336815 | 215 | "pmic name read <reg> - read register\n" |
7d19629f ŁM |
216 | "pmic name write <reg> <value> - write register\n" |
217 | "pmic name bat state - write register\n" | |
218 | "pmic name bat charge - write register\n" | |
e542b7f0 | 219 | ); |
8c0bb858 | 220 | #endif |