LXR uboot/drivers/power/power

   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)
  21static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
  22{
  23        return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
  24}
  25#endif
  26
  27int 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