1 /* 2 * Copyright (C) 2011-2012 Samsung Electronics 3 * Lukasz Majewski <l.majewski@samsung.com> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #ifndef __CORE_PMIC_H_ 25 #define __CORE_PMIC_H_ 26 27 #include <common.h> 28 #include <linux/list.h> 29 #include <i2c.h> 30 31 enum { PMIC_I2C, PMIC_SPI, }; 32 enum { I2C_PMIC, I2C_NUM, }; 33 enum { PMIC_READ, PMIC_WRITE, }; 34 enum { PMIC_SENSOR_BYTE_ORDER_LITTLE, PMIC_SENSOR_BYTE_ORDER_BIG, }; 35 36 struct p_i2c { 37 unsigned char addr; 38 unsigned char *buf; 39 unsigned char tx_num; 40 }; 41 42 struct p_spi { 43 unsigned int cs; 44 unsigned int mode; 45 unsigned int bitlen; 46 unsigned int clk; 47 unsigned int flags; 48 u32 (*prepare_tx)(u32 reg, u32 *val, u32 write); 49 }; 50 51 struct pmic { 52 const char *name; 53 unsigned char bus; 54 unsigned char interface; 55 unsigned char sensor_byte_order; 56 unsigned int number_of_regs; 57 union hw { 58 struct p_i2c i2c; 59 struct p_spi spi; 60 } hw; 61 62 struct list_head list; 63 }; 64 65 int pmic_init(unsigned char bus); 66 int pmic_dialog_init(unsigned char bus); 67 int check_reg(struct pmic *p, u32 reg); 68 struct pmic *pmic_alloc(void); 69 struct pmic *pmic_get(const char *s); 70 int pmic_probe(struct pmic *p); 71 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val); 72 int pmic_reg_write(struct pmic *p, u32 reg, u32 val); 73 int pmic_set_output(struct pmic *p, u32 reg, int ldo, int on); 74 75 #define pmic_i2c_addr (p->hw.i2c.addr) 76 #define pmic_i2c_tx_num (p->hw.i2c.tx_num) 77 78 #define pmic_spi_bitlen (p->hw.spi.bitlen) 79 #define pmic_spi_flags (p->hw.spi.flags) 80 81 #endif /* __CORE_PMIC_H_ */ 82