arch/mips/ath79/dev-gfmn100.c

/*
 * From the header:
 *
 * This outlines the configuration (namely pins for SPI drivers)
 * of the GFMN100 "WindCharger" board.
 *
 * GFMN100 Contains:
 *
 * -- One mx25l25655e nonvolatile storage device
 * -- One lm95071 temperature sensor
 */

#include <linux/init.h>
#include <linux/spi/spi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>

#include "common.h"
#include "dev-spi.h"
#include "dev-gfmn100.h"

#define GFMN100_LM95071_CS 14         /* GPIO pin for temp sensor */
#define GFMN100_LM95071_HZ 5000000    /* max SPI clk speed */
#define GFMN100_LM95071_MA "lm95071"  /* Modalias */

#define GFMN100_BUS 0

static struct ath79_spi_controller_data ath79_spi0_cdata = {
  .cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
  .cs_line = 0,
  .is_flash = true,
};

static struct ath79_spi_controller_data ath79_spi1_cdata = {
  .cs_type = ATH79_SPI_CS_TYPE_GPIO,
  .cs_line = GFMN100_LM95071_CS,
  .is_flash = false,
};

static struct spi_board_info ath79_spi_info[] = {
  {
    .bus_num = GFMN100_BUS,
    .chip_select = 0,
    .max_speed_hz = 25000000,
    .modalias = "mx25l25655e",
    .controller_data = &ath79_spi0_cdata,
  },
  {
    .bus_num = GFMN100_BUS,
    .chip_select = 1,
    .max_speed_hz = GFMN100_LM95071_HZ,
    .modalias = GFMN100_LM95071_MA,
    .controller_data = &ath79_spi1_cdata,
  },
};

struct ath79_spi_platform_data ath79_spi_data;

void __init ath79_register_gfmn100(void)
{
  ssize_t cs_count = ARRAY_SIZE(ath79_spi_info);
  ath79_spi_data.bus_num = GFMN100_BUS;
  ath79_spi_data.num_chipselect = cs_count;
  ath79_gpio_direction_select(GFMN100_LM95071_CS, true);
  ath79_register_spi(&ath79_spi_data, ath79_spi_info, cs_count);
}