| /* |
| * Copyright 2014 Rockchip Electronics Co., Ltd. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but without any warranty; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <stdint.h> |
| |
| #include "base/container_of.h" |
| #include "base/xalloc.h" |
| #include "drivers/power/rk808.h" |
| |
| #define RK808_DEVCTRL_REG 0x4b |
| #define DEV_OFF_RST (1<<3) |
| |
| static int rk808_set_bit(Rk808Pmic *pmic, uint8_t reg, uint8_t bit) |
| { |
| uint8_t val; |
| if (i2c_read8(pmic->bus, pmic->chip, reg, &val) || |
| i2c_write8(pmic->bus, pmic->chip, reg, val | bit)) |
| return -1; |
| return 0; |
| } |
| |
| static int rk808_power_off(PowerOps *me) |
| { |
| Rk808Pmic *pmic = container_of(me, Rk808Pmic, ops); |
| rk808_set_bit(pmic, RK808_DEVCTRL_REG, DEV_OFF_RST); |
| halt(); |
| return 0; |
| } |
| |
| Rk808Pmic *new_rk808_pmic(I2cOps *bus, uint8_t chip) |
| { |
| Rk808Pmic *pmic = xzalloc(sizeof(*pmic)); |
| pmic->ops.cold_reboot = NULL; |
| pmic->ops.power_off = &rk808_power_off; |
| pmic->bus = bus; |
| pmic->chip = chip; |
| return pmic; |
| } |