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839f4d4e87
There is no need to pass p->bus differently when the PMIC is connected via SPI or via I2C. Handle the both cases in the same way. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/*
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* Copyright (C) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@samsung.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spi.h>
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#include <power/pmic.h>
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#include <fsl_pmic.h>
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#include <errno.h>
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#if defined(CONFIG_PMIC_FSL_MC13892)
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#define FSL_PMIC_I2C_LENGTH 3
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#elif defined(CONFIG_PMIC_FSL_MC34704)
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#define FSL_PMIC_I2C_LENGTH 1
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#endif
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#if defined(CONFIG_POWER_SPI)
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static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
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{
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return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
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}
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#endif
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int pmic_init(unsigned char bus)
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{
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static const char name[] = "FSL_PMIC";
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struct pmic *p = pmic_alloc();
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if (!p) {
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printf("%s: POWER allocation error!\n", __func__);
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return -ENOMEM;
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}
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p->name = name;
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p->number_of_regs = PMIC_NUM_OF_REGS;
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p->bus = bus;
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#if defined(CONFIG_POWER_SPI)
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p->interface = PMIC_SPI;
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p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
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p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
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p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
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p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
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p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
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p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
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#elif defined(CONFIG_POWER_I2C)
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p->interface = PMIC_I2C;
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p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
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p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH;
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#else
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#error "You must select CONFIG_POWER_SPI or CONFIG_PMIC_I2C"
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#endif
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return 0;
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}
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