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/*
* Copyright (C) 2011 Samsung Electronics
* Lukasz Majewski <l.majewski@samsung.com>
*
* (C) Copyright 2010
* Stefano Babic, DENX Software Engineering, sbabic@denx.de
*
* (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <linux/types.h>
#include <linux/list.h>
#include <power/pmic.h>
static LIST_HEAD(pmic_list);
int check_reg(struct pmic *p, u32 reg)
{
if (reg >= p->number_of_regs) {
printf("<reg num> = %d is invalid. Should be less than %d\n",
reg, p->number_of_regs);
return -EINVAL;
}
return 0;
}
int pmic_set_output(struct pmic *p, u32 reg, int out, int on)
{
u32 val;
if (pmic_reg_read(p, reg, &val))
return -ENOTSUPP;
if (on)
val |= out;
else
val &= ~out;
if (pmic_reg_write(p, reg, val))
return -ENOTSUPP;
return 0;
}
struct pmic *pmic_alloc(void)
{
struct pmic *p;
p = calloc(sizeof(*p), 1);
if (!p) {
printf("%s: No available memory for allocation!\n", __func__);
return NULL;
}
list_add_tail(&p->list, &pmic_list);
debug("%s: new pmic struct: 0x%p\n", __func__, p);
return p;
}
struct pmic *pmic_get(const char *s)
{
struct pmic *p;
list_for_each_entry(p, &pmic_list, list) {
if (strcmp(p->name, s) == 0) {
debug("%s: pmic %s -> 0x%p\n", __func__, p->name, p);
return p;
}
}
return NULL;
}
#ifndef CONFIG_SPL_BUILD
static int pmic_dump(struct pmic *p)
{
int i, ret;
u32 val;
if (!p) {
puts("Wrong PMIC name!\n");
return -ENODEV;
}
printf("PMIC: %s\n", p->name);
for (i = 0; i < p->number_of_regs; i++) {
ret = pmic_reg_read(p, i, &val);
if (ret)
puts("PMIC: Registers dump failed\n");
if (!(i % 8))
printf("\n0x%02x: ", i);
printf("%08x ", val);
}
puts("\n");
return 0;
}
static const char *power_get_interface(int interface)
{
const char *power_interface[] = {"I2C", "SPI", "|+|-|"};
return power_interface[interface];
}
static void pmic_list_names(void)
{
struct pmic *p;
puts("PMIC devices:\n");
list_for_each_entry(p, &pmic_list, list) {
printf("name: %s bus: %s_%d\n", p->name,
power_get_interface(p->interface), p->bus);
}
}
static int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
u32 ret, reg, val;
char *cmd, *name;
struct pmic *p;
/* at least two arguments please */
if (argc < 2)
return CMD_RET_USAGE;
if (strcmp(argv[1], "list") == 0) {
pmic_list_names();
return CMD_RET_SUCCESS;
}
if (argc < 3)
return CMD_RET_USAGE;
name = argv[1];
cmd = argv[2];
debug("%s: name: %s cmd: %s\n", __func__, name, cmd);
p = pmic_get(name);
if (!p)
return CMD_RET_FAILURE;
if (strcmp(cmd, "dump") == 0) {
if (pmic_dump(p))
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}
if (strcmp(cmd, "read") == 0) {
if (argc < 4)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[3], NULL, 16);
ret = pmic_reg_read(p, reg, &val);
if (ret)
puts("PMIC: Register read failed\n");
printf("\n0x%02x: 0x%08x\n", reg, val);
return CMD_RET_SUCCESS;
}
if (strcmp(cmd, "write") == 0) {
if (argc < 5)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[3], NULL, 16);
val = simple_strtoul(argv[4], NULL, 16);
pmic_reg_write(p, reg, val);
return CMD_RET_SUCCESS;
}
if (strcmp(cmd, "bat") == 0) {
if (argc < 4)
return CMD_RET_USAGE;
if (!p->pbat) {
printf("%s is not a battery\n", p->name);
return CMD_RET_FAILURE;
}
if (strcmp(argv[3], "state") == 0)
p->fg->fg_battery_check(p->pbat->fg, p);
if (strcmp(argv[3], "charge") == 0) {
printf("BAT: %s charging (ctrl+c to break)\n",
p->name);
if (p->low_power_mode)
p->low_power_mode();
if (p->pbat->battery_charge)
p->pbat->battery_charge(p);
}
return CMD_RET_SUCCESS;
}
/* No subcommand found */
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
"PMIC",
"list - list available PMICs\n"
"pmic name dump - dump named PMIC registers\n"
"pmic name read <reg> - read register\n"
"pmic name write <reg> <value> - write register\n"
"pmic name bat state - write register\n"
"pmic name bat charge - write register\n"
);
#endif
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