1 /* 2 * Copyright (C) 2011 Samsung Electronics 3 * Lukasz Majewski <l.majewski@samsung.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <spi.h> 10 #include <power/pmic.h> 11 #include <fsl_pmic.h> 12 #include <errno.h> 13 14 #if defined(CONFIG_POWER_FSL_MC13892) 15 #define FSL_PMIC_I2C_LENGTH 3 16 #elif defined(CONFIG_POWER_FSL_MC34704) 17 #define FSL_PMIC_I2C_LENGTH 1 18 #endif 19 20 #if defined(CONFIG_POWER_SPI) 21 static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write) 22 { 23 return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF); 24 } 25 #endif 26 27 int pmic_init(unsigned char bus) 28 { 29 static const char name[] = "FSL_PMIC"; 30 struct pmic *p = pmic_alloc(); 31 32 if (!p) { 33 printf("%s: POWER allocation error!\n", __func__); 34 return -ENOMEM; 35 } 36 37 p->name = name; 38 p->number_of_regs = PMIC_NUM_OF_REGS; 39 p->bus = bus; 40 41 #if defined(CONFIG_POWER_SPI) 42 p->interface = PMIC_SPI; 43 p->hw.spi.cs = CONFIG_FSL_PMIC_CS; 44 p->hw.spi.clk = CONFIG_FSL_PMIC_CLK; 45 p->hw.spi.mode = CONFIG_FSL_PMIC_MODE; 46 p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN; 47 p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END; 48 p->hw.spi.prepare_tx = pmic_spi_prepare_tx; 49 #elif defined(CONFIG_POWER_I2C) 50 p->interface = PMIC_I2C; 51 p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR; 52 p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH; 53 #else 54 #error "You must select CONFIG_POWER_SPI or CONFIG_POWER_I2C" 55 #endif 56 57 return 0; 58 } 59