u-boot/cmd/pmic.c
Simon Glass 8b85dfc675 dm: Avoid accessing seq directly
At present various drivers etc. access the device's 'seq' member directly.
This makes it harder to change the meaning of that member. Change access
to go through a function instead.

The drivers/i2c/lpc32xx_i2c.c file is left unchanged for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-18 20:32:21 -07:00

229 lines
4.7 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014-2015 Samsung Electronics
* Przemyslaw Marczak <p.marczak@samsung.com>
*/
#include <common.h>
#include <command.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(struct cmd_tbl *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", dev_seq(currdev), currdev->name);
}
return CMD_RET_SUCCESS;
}
static int do_list(struct cmd_tbl *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_seq(dev->parent));
}
if (ret)
return CMD_RET_FAILURE;
return CMD_RET_SUCCESS;
}
static int do_dump(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct uc_pmic_priv *priv;
struct udevice *dev;
char fmt[16];
uint reg;
int ret;
if (!currdev) {
printf("First, set the PMIC device!\n");
return CMD_RET_USAGE;
}
dev = currdev;
priv = dev_get_uclass_priv(dev);
printf("Dump pmic: %s registers\n", dev->name);
sprintf(fmt, "%%%d.%dx ", priv->trans_len * 2,
priv->trans_len * 2);
for (reg = 0; reg < pmic_reg_count(dev); reg++) {
ret = pmic_reg_read(dev, reg);
if (ret < 0 && ret != -ENODATA) {
printf("Can't read register: %d\n", reg);
return failure(ret);
}
if (!(reg % 16))
printf("\n0x%02x: ", reg);
if (ret == -ENODATA) {
int i;
for (i = 0; i < priv->trans_len; i++)
puts("--");
puts(" ");
} else {
printf(fmt, ret);
}
}
printf("\n");
return CMD_RET_SUCCESS;
}
static int do_read(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct uc_pmic_priv *priv;
struct udevice *dev;
int regs, ret;
char fmt[24];
uint reg;
if (!currdev) {
printf("First, set the PMIC device!\n");
return CMD_RET_USAGE;
}
dev = currdev;
priv = dev_get_uclass_priv(dev);
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_reg_read(dev, reg);
if (ret < 0) {
printf("Can't read PMIC register: %d!\n", reg);
return failure(ret);
}
sprintf(fmt, "0x%%02x: 0x%%%d.%dx\n", priv->trans_len * 2,
priv->trans_len * 2);
printf(fmt, reg, ret);
return CMD_RET_SUCCESS;
}
static int do_write(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
uint reg, value;
int regs, ret;
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_reg_write(dev, reg, value);
if (ret) {
printf("Can't write PMIC register: %d!\n", reg);
return failure(ret);
}
return CMD_RET_SUCCESS;
}
static struct cmd_tbl 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(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct cmd_tbl *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"
);