kernel/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c

   1 /*
   2  * platform_emc1403.c: emc1403 platform data initilization 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/init.h>
  14 #include <linux/gpio.h>
  15 #include <linux/i2c.h>
  16 #include <asm/intel-mid.h>
  17
  18 static void __init *emc1403_platform_data(void *info)
  19 {
  20         static short intr2nd_pdata;
  21         struct i2c_board_info *i2c_info = info;
  22         int intr = get_gpio_by_name("thermal_int");
  23         int intr2nd = get_gpio_by_name("thermal_alert");
  24
  25         if (intr < 0)
  26                 return NULL;
  27         if (intr2nd < 0)
  28                 return NULL;
  29
  30         i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
  31         intr2nd_pdata = intr2nd + INTEL_MID_IRQ_OFFSET;
  32
  33         return &intr2nd_pdata;
  34 }
  35
  36 static const struct devs_id emc1403_dev_id __initconst = {
  37         .name = "emc1403",
  38         .type = SFI_DEV_TYPE_I2C,
  39         .delay = 1,
  40         .get_platform_data = &emc1403_platform_data,
  41 };
  42
  43 sfi_device(emc1403_dev_id);