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/*
* Copyright (C) 2014-2015 Samsung Electronics
* Przemyslaw Marczak <p.marczak@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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"
);
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