LXR uboot/drivers/power/power

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 *  Copyright (C) 2011 Samsung Electronics
   4 *  Lukasz Majewski <l.majewski@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)
  20static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
  21{
  22        return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
  23}
  24#endif
  25
  26int 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