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