u-boot/cmd/pmic.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

209 lines
4.3 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2015 Samsung Electronics
* Przemyslaw Marczak <p.marczak@samsung.com>
*/
#include <common.h>
#include <errno.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <power/pmic.h>
#define LIMIT_DEV 32
#define LIMIT_PARENT 20
static struct udevice *currdev;
static int failure(int ret)
{
printf("Error: %d (%s)\n", ret, errno_str(ret));
return CMD_RET_FAILURE;
}
static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
char *name;
int ret = -ENODEV;
switch (argc) {
case 2:
name = argv[1];
ret = pmic_get(name, &currdev);
if (ret) {
printf("Can't get PMIC: %s!\n", name);
return failure(ret);
}
case 1:
if (!currdev) {
printf("PMIC device is not set!\n\n");
return CMD_RET_USAGE;
}
printf("dev: %d @ %s\n", currdev->seq, currdev->name);
}
return CMD_RET_SUCCESS;
}
static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct udevice *dev;
int ret;
printf("| %-*.*s| %-*.*s| %s @ %s\n",
LIMIT_DEV, LIMIT_DEV, "Name",
LIMIT_PARENT, LIMIT_PARENT, "Parent name",
"Parent uclass", "seq");
for (ret = uclass_first_device(UCLASS_PMIC, &dev); dev;
ret = uclass_next_device(&dev)) {
if (ret)
continue;
printf("| %-*.*s| %-*.*s| %s @ %d\n",
LIMIT_DEV, LIMIT_DEV, dev->name,
LIMIT_PARENT, LIMIT_PARENT, dev->parent->name,
dev_get_uclass_name(dev->parent), dev->parent->seq);
}
if (ret)
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}
static int do_dump(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct udevice *dev;
uint8_t value;
uint reg;
int ret;
if (!currdev) {
printf("First, set the PMIC device!\n");
return CMD_RET_USAGE;
}
dev = currdev;
printf("Dump pmic: %s registers\n", dev->name);
for (reg = 0; reg < pmic_reg_count(dev); reg++) {
ret = pmic_read(dev, reg, &value, 1);
if (ret) {
printf("Can't read register: %d\n", reg);
return failure(ret);
}
if (!(reg % 16))
printf("\n0x%02x: ", reg);
printf("%2.2x ", value);
}
printf("\n");
return CMD_RET_SUCCESS;
}
static int do_read(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct udevice *dev;
int regs, ret;
uint8_t value;
uint reg;
if (!currdev) {
printf("First, set the PMIC device!\n");
return CMD_RET_USAGE;
}
dev = currdev;
if (argc != 2)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[1], NULL, 0);
regs = pmic_reg_count(dev);
if (reg > regs) {
printf("PMIC max reg: %d\n", regs);
return failure(-EFAULT);
}
ret = pmic_read(dev, reg, &value, 1);
if (ret) {
printf("Can't read PMIC register: %d!\n", reg);
return failure(ret);
}
printf("0x%02x: 0x%2.2x\n", reg, value);
return CMD_RET_SUCCESS;
}
static int do_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
struct udevice *dev;
int regs, ret;
uint8_t value;
uint reg;
if (!currdev) {
printf("First, set the PMIC device!\n");
return CMD_RET_USAGE;
}
dev = currdev;
if (argc != 3)
return CMD_RET_USAGE;
reg = simple_strtoul(argv[1], NULL, 0);
regs = pmic_reg_count(dev);
if (reg > regs) {
printf("PMIC max reg: %d\n", regs);
return failure(-EFAULT);
}
value = simple_strtoul(argv[2], NULL, 0);
ret = pmic_write(dev, reg, &value, 1);
if (ret) {
printf("Can't write PMIC register: %d!\n", reg);
return failure(ret);
}
return CMD_RET_SUCCESS;
}
static cmd_tbl_t subcmd[] = {
U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
U_BOOT_CMD_MKENT(dump, 1, 1, do_dump, "", ""),
U_BOOT_CMD_MKENT(read, 2, 1, do_read, "", ""),
U_BOOT_CMD_MKENT(write, 3, 1, do_write, "", ""),
};
static int do_pmic(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
cmd_tbl_t *cmd;
argc--;
argv++;
cmd = find_cmd_tbl(argv[0], subcmd, ARRAY_SIZE(subcmd));
if (cmd == NULL || argc > cmd->maxargs)
return CMD_RET_USAGE;
return cmd->cmd(cmdtp, flag, argc, argv);
}
U_BOOT_CMD(pmic, CONFIG_SYS_MAXARGS, 1, do_pmic,
"PMIC sub-system",
"list - list pmic devices\n"
"pmic dev [name] - show or [set] operating PMIC device\n"
"pmic dump - dump registers\n"
"pmic read address - read byte of register at address\n"
"pmic write address - write byte to register at address\n"
);