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[people/ms/u-boot.git] / drivers / power / power_fsl.c
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1/*
2 * Copyright (C) 2011 Samsung Electronics
3 * Lukasz Majewski <l.majewski@samsung.com>
4 *
1a459660 5 * SPDX-License-Identifier: GPL-2.0+
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6 */
7
8#include <common.h>
9#include <spi.h>
c7336815 10#include <power/pmic.h>
b2e5add3 11#include <fsl_pmic.h>
c7336815 12#include <errno.h>
b2e5add3 13
913702ca 14#if defined(CONFIG_POWER_FSL_MC13892)
4cfc6c4f 15#define FSL_PMIC_I2C_LENGTH 3
913702ca 16#elif defined(CONFIG_POWER_FSL_MC34704)
787f4f30 17#define FSL_PMIC_I2C_LENGTH 1
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18#endif
19
be3b51aa 20#if defined(CONFIG_POWER_SPI)
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21static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
22{
435a7285 23 return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
b2e5add3 24}
b7b7d3cc 25#endif
b2e5add3 26
c7336815 27int pmic_init(unsigned char bus)
b2e5add3 28{
b2e5add3 29 static const char name[] = "FSL_PMIC";
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30 struct pmic *p = pmic_alloc();
31
32 if (!p) {
33 printf("%s: POWER allocation error!\n", __func__);
34 return -ENOMEM;
35 }
b2e5add3 36
b2e5add3 37 p->name = name;
b2e5add3 38 p->number_of_regs = PMIC_NUM_OF_REGS;
839f4d4e 39 p->bus = bus;
b2e5add3 40
be3b51aa 41#if defined(CONFIG_POWER_SPI)
b7b7d3cc 42 p->interface = PMIC_SPI;
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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;
be3b51aa 49#elif defined(CONFIG_POWER_I2C)
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50 p->interface = PMIC_I2C;
51 p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
4cfc6c4f 52 p->hw.i2c.tx_num = FSL_PMIC_I2C_LENGTH;
b7b7d3cc 53#else
913702ca 54#error "You must select CONFIG_POWER_SPI or CONFIG_POWER_I2C"
b7b7d3cc 55#endif
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56
57 return 0;
58}