LXR linux/arch/x86/platform/intel-mid/device_libs/platform

   1/*
   2 * platform_tca6416.c: tca6416 platform data initialization file
   3 *
   4 * (C) Copyright 2013 Intel Corporation
   5 * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License
   9 * as published by the Free Software Foundation; version 2
  10 * of the License.
  11 */
  12
  13#include <linux/platform_data/pca953x.h>
  14#include <linux/i2c.h>
  15#include <linux/gpio.h>
  16#include <asm/intel-mid.h>
  17
  18#define TCA6416_NAME    "tca6416"
  19#define TCA6416_BASE    "tca6416_base"
  20#define TCA6416_INTR    "tca6416_int"
  21
  22static void *tca6416_platform_data(void *info)
  23{
  24        static struct pca953x_platform_data tca6416;
  25        struct i2c_board_info *i2c_info = info;
  26        int gpio_base, intr;
  27        char base_pin_name[SFI_NAME_LEN + 1];
  28        char intr_pin_name[SFI_NAME_LEN + 1];
  29
  30        strcpy(i2c_info->type, TCA6416_NAME);
  31        strcpy(base_pin_name, TCA6416_BASE);
  32        strcpy(intr_pin_name, TCA6416_INTR);
  33
  34        gpio_base = get_gpio_by_name(base_pin_name);
  35        intr = get_gpio_by_name(intr_pin_name);
  36
  37        if (gpio_base < 0)
  38                return NULL;
  39        tca6416.gpio_base = gpio_base;
  40        if (intr >= 0) {
  41                i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
  42                tca6416.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET;
  43        } else {
  44                i2c_info->irq = -1;
  45                tca6416.irq_base = -1;
  46        }
  47        return &tca6416;
  48}
  49
  50static const struct devs_id tca6416_dev_id __initconst = {
  51        .name = "tca6416",
  52        .type = SFI_DEV_TYPE_I2C,
  53        .delay = 1,
  54        .get_platform_data = &tca6416_platform_data,
  55};
  56
  57sfi_device(tca6416_dev_id);
  58