u-boot/drivers/power/power_core.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

219 lines
4.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* 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.
*/
#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