1 /* 2 * Copyright (C) 2011 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 #include <common.h> 25 #include <spi.h> 26 #include <power/pmic.h> 27 #include <fsl_pmic.h> 28 #include <errno.h> 29 30 #if defined(CONFIG_PMIC_FSL_MC13892) 31 #define FSL_PMIC_I2C_LENGTH 3 32 #elif defined(CONFIG_PMIC_FSL_MC34704) 33 #define FSL_PMIC_I2C_LENGTH 1 34 #endif 35 36 #if defined(CONFIG_POWER_SPI) 37 static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write) 38 { 39 return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF); 40 } 41 #endif 42 43 int pmic_init(unsigned char bus) 44 { 45 static const char name[] = "FSL_PMIC"; 46 struct pmic *p = pmic_alloc(); 47 48 if (!p) { 49 printf("%s: POWER allocation error!\n", __func__); 50 return -ENOMEM; 51 } 52 53 p->name = name; 54 p->number_of_regs = PMIC_NUM_OF_REGS; 55 56 #if defined(CONFIG_POWER_SPI) 57 p->interface = PMIC_SPI; 58 p->bus = CONFIG_FSL_PMIC_BUS; 59 p->hw.spi.cs = CONFIG_FSL_PMIC_CS; 60 p->hw.spi.clk = CONFIG_FSL_PMIC_CLK; 61 p->hw.spi.mode = CONFIG_FSL_PMIC_MODE; 62 p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN; 63 p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END; 64 p->hw.spi.prepare_tx = pmic_spi_prepare_tx; 65 #elif defined(CONFIG_POWER_I2C) 66 p->interface = PMIC_I2C; 67 p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR; 68 p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH; 69 p->bus = bus; 70 #else 71 #error "You must select CONFIG_POWER_SPI or CONFIG_PMIC_I2C" 72 #endif 73 74 return 0; 75 } 76