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