/* * 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. * * SPDX-License-Identifier: GPL-2.0+ */ #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 -1; } 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 -1; if (on) val |= out; else val &= ~out; if (pmic_reg_write(p, reg, val)) return -1; return 0; } static void pmic_show_info(struct pmic *p) { printf("PMIC: %s\n", p->name); } static int pmic_dump(struct pmic *p) { int i, ret; u32 val; if (!p) { puts("Wrong PMIC name!\n"); return -1; } pmic_show_info(p); 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; } 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; } 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); } } 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" );