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