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git.ipfire.org Git - thirdparty/u-boot.git/blob - drivers/power/power_core.c
1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2011 Samsung Electronics
4 * Lukasz Majewski <l.majewski@samsung.com>
7 * Stefano Babic, DENX Software Engineering, sbabic@denx.de
9 * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
14 #include <linux/types.h>
15 #include <linux/list.h>
16 #include <power/pmic.h>
18 static LIST_HEAD(pmic_list
);
20 int check_reg(struct pmic
*p
, u32 reg
)
22 if (reg
>= p
->number_of_regs
) {
23 printf("<reg num> = %d is invalid. Should be less than %d\n",
24 reg
, p
->number_of_regs
);
31 int pmic_set_output(struct pmic
*p
, u32 reg
, int out
, int on
)
35 if (pmic_reg_read(p
, reg
, &val
))
43 if (pmic_reg_write(p
, reg
, val
))
49 struct pmic
*pmic_alloc(void)
53 p
= calloc(sizeof(*p
), 1);
55 printf("%s: No available memory for allocation!\n", __func__
);
59 list_add_tail(&p
->list
, &pmic_list
);
61 debug("%s: new pmic struct: 0x%p\n", __func__
, p
);
66 struct pmic
*pmic_get(const char *s
)
70 list_for_each_entry(p
, &pmic_list
, list
) {
71 if (strcmp(p
->name
, s
) == 0) {
72 debug("%s: pmic %s -> 0x%p\n", __func__
, p
->name
, p
);
80 #ifndef CONFIG_SPL_BUILD
81 static int pmic_dump(struct pmic
*p
)
87 puts("Wrong PMIC name!\n");
91 printf("PMIC: %s\n", p
->name
);
92 for (i
= 0; i
< p
->number_of_regs
; i
++) {
93 ret
= pmic_reg_read(p
, i
, &val
);
95 puts("PMIC: Registers dump failed\n");
98 printf("\n0x%02x: ", i
);
100 printf("%08x ", val
);
106 static const char *power_get_interface(int interface
)
108 const char *power_interface
[] = {"I2C", "SPI", "|+|-|"};
109 return power_interface
[interface
];
112 static void pmic_list_names(void)
116 puts("PMIC devices:\n");
117 list_for_each_entry(p
, &pmic_list
, list
) {
118 printf("name: %s bus: %s_%d\n", p
->name
,
119 power_get_interface(p
->interface
), p
->bus
);
123 static int do_pmic(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
129 /* at least two arguments please */
131 return CMD_RET_USAGE
;
133 if (strcmp(argv
[1], "list") == 0) {
135 return CMD_RET_SUCCESS
;
139 return CMD_RET_USAGE
;
144 debug("%s: name: %s cmd: %s\n", __func__
, name
, cmd
);
147 return CMD_RET_FAILURE
;
149 if (strcmp(cmd
, "dump") == 0) {
151 return CMD_RET_FAILURE
;
152 return CMD_RET_SUCCESS
;
155 if (strcmp(cmd
, "read") == 0) {
157 return CMD_RET_USAGE
;
159 reg
= simple_strtoul(argv
[3], NULL
, 16);
160 ret
= pmic_reg_read(p
, reg
, &val
);
163 puts("PMIC: Register read failed\n");
165 printf("\n0x%02x: 0x%08x\n", reg
, val
);
167 return CMD_RET_SUCCESS
;
170 if (strcmp(cmd
, "write") == 0) {
172 return CMD_RET_USAGE
;
174 reg
= simple_strtoul(argv
[3], NULL
, 16);
175 val
= simple_strtoul(argv
[4], NULL
, 16);
176 pmic_reg_write(p
, reg
, val
);
178 return CMD_RET_SUCCESS
;
181 if (strcmp(cmd
, "bat") == 0) {
183 return CMD_RET_USAGE
;
186 printf("%s is not a battery\n", p
->name
);
187 return CMD_RET_FAILURE
;
190 if (strcmp(argv
[3], "state") == 0)
191 p
->fg
->fg_battery_check(p
->pbat
->fg
, p
);
193 if (strcmp(argv
[3], "charge") == 0) {
194 printf("BAT: %s charging (ctrl+c to break)\n",
196 if (p
->low_power_mode
)
198 if (p
->pbat
->battery_charge
)
199 p
->pbat
->battery_charge(p
);
202 return CMD_RET_SUCCESS
;
205 /* No subcommand found */
206 return CMD_RET_SUCCESS
;
210 pmic
, CONFIG_SYS_MAXARGS
, 1, do_pmic
,
212 "list - list available PMICs\n"
213 "pmic name dump - dump named PMIC registers\n"
214 "pmic name read <reg> - read register\n"
215 "pmic name write <reg> <value> - write register\n"
216 "pmic name bat state - write register\n"
217 "pmic name bat charge - write register\n"