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git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/power/power_core.c
2 * Copyright (C) 2011 Samsung Electronics
3 * Lukasz Majewski <l.majewski@samsung.com>
6 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
8 * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
10 * SPDX-License-Identifier: GPL-2.0+
15 #include <linux/types.h>
16 #include <linux/list.h>
17 #include <power/pmic.h>
19 static LIST_HEAD(pmic_list
);
21 int check_reg(struct pmic
*p
, u32 reg
)
23 if (reg
>= p
->number_of_regs
) {
24 printf("<reg num> = %d is invalid. Should be less than %d\n",
25 reg
, p
->number_of_regs
);
32 int pmic_set_output(struct pmic
*p
, u32 reg
, int out
, int on
)
36 if (pmic_reg_read(p
, reg
, &val
))
44 if (pmic_reg_write(p
, reg
, val
))
50 static void pmic_show_info(struct pmic
*p
)
52 printf("PMIC: %s\n", p
->name
);
55 static int pmic_dump(struct pmic
*p
)
61 puts("Wrong PMIC name!\n");
66 for (i
= 0; i
< p
->number_of_regs
; i
++) {
67 ret
= pmic_reg_read(p
, i
, &val
);
69 puts("PMIC: Registers dump failed\n");
72 printf("\n0x%02x: ", i
);
80 struct pmic
*pmic_alloc(void)
84 p
= calloc(sizeof(*p
), 1);
86 printf("%s: No available memory for allocation!\n", __func__
);
90 list_add_tail(&p
->list
, &pmic_list
);
92 debug("%s: new pmic struct: 0x%p\n", __func__
, p
);
97 struct pmic
*pmic_get(const char *s
)
101 list_for_each_entry(p
, &pmic_list
, list
) {
102 if (strcmp(p
->name
, s
) == 0) {
103 debug("%s: pmic %s -> 0x%p\n", __func__
, p
->name
, p
);
111 const char *power_get_interface(int interface
)
113 const char *power_interface
[] = {"I2C", "SPI", "|+|-|"};
114 return power_interface
[interface
];
117 static void pmic_list_names(void)
121 puts("PMIC devices:\n");
122 list_for_each_entry(p
, &pmic_list
, list
) {
123 printf("name: %s bus: %s_%d\n", p
->name
,
124 power_get_interface(p
->interface
), p
->bus
);
128 int do_pmic(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
134 /* at least two arguments please */
136 return CMD_RET_USAGE
;
138 if (strcmp(argv
[1], "list") == 0) {
140 return CMD_RET_SUCCESS
;
144 return CMD_RET_USAGE
;
149 debug("%s: name: %s cmd: %s\n", __func__
, name
, cmd
);
152 return CMD_RET_FAILURE
;
154 if (strcmp(cmd
, "dump") == 0) {
156 return CMD_RET_FAILURE
;
157 return CMD_RET_SUCCESS
;
160 if (strcmp(cmd
, "read") == 0) {
162 return CMD_RET_USAGE
;
164 reg
= simple_strtoul(argv
[3], NULL
, 16);
165 ret
= pmic_reg_read(p
, reg
, &val
);
168 puts("PMIC: Register read failed\n");
170 printf("\n0x%02x: 0x%08x\n", reg
, val
);
172 return CMD_RET_SUCCESS
;
175 if (strcmp(cmd
, "write") == 0) {
177 return CMD_RET_USAGE
;
179 reg
= simple_strtoul(argv
[3], NULL
, 16);
180 val
= simple_strtoul(argv
[4], NULL
, 16);
181 pmic_reg_write(p
, reg
, val
);
183 return CMD_RET_SUCCESS
;
186 if (strcmp(cmd
, "bat") == 0) {
188 return CMD_RET_USAGE
;
191 printf("%s is not a battery\n", p
->name
);
192 return CMD_RET_FAILURE
;
195 if (strcmp(argv
[3], "state") == 0)
196 p
->fg
->fg_battery_check(p
->pbat
->fg
, p
);
198 if (strcmp(argv
[3], "charge") == 0) {
199 printf("BAT: %s charging (ctrl+c to break)\n",
201 if (p
->low_power_mode
)
203 if (p
->pbat
->battery_charge
)
204 p
->pbat
->battery_charge(p
);
207 return CMD_RET_SUCCESS
;
210 /* No subcommand found */
211 return CMD_RET_SUCCESS
;
215 pmic
, CONFIG_SYS_MAXARGS
, 1, do_pmic
,
217 "list - list available PMICs\n"
218 "pmic name dump - dump named PMIC registers\n"
219 "pmic name read <reg> - read register\n"
220 "pmic name write <reg> <value> - write register\n"
221 "pmic name bat state - write register\n"
222 "pmic name bat charge - write register\n"