arch/x86/platform/intel-mid/device_libs/platform_tca6416.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * platform_tca6416.c: tca6416 platform data initialization file
   4  *
   5  * (C) Copyright 2013 Intel Corporation
   6  * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com>
   7  */
   8
   9 #include <linux/platform_data/pca953x.h>
  10 #include <linux/i2c.h>
  11 #include <linux/gpio.h>
  12 #include <asm/intel-mid.h>
  13
  14 #define TCA6416_NAME    "tca6416"
  15 #define TCA6416_BASE    "tca6416_base"
  16 #define TCA6416_INTR    "tca6416_int"
  17
  18 static void *tca6416_platform_data(void *info)
  19 {
  20         static struct pca953x_platform_data tca6416;
  21         struct i2c_board_info *i2c_info = info;
  22         int gpio_base, intr;
  23         char base_pin_name[SFI_NAME_LEN + 1];
  24         char intr_pin_name[SFI_NAME_LEN + 1];
  25
  26         strcpy(i2c_info->type, TCA6416_NAME);
  27         strcpy(base_pin_name, TCA6416_BASE);
  28         strcpy(intr_pin_name, TCA6416_INTR);
  29
  30         gpio_base = get_gpio_by_name(base_pin_name);
  31         intr = get_gpio_by_name(intr_pin_name);
  32
  33         if (gpio_base < 0)
  34                 return NULL;
  35         tca6416.gpio_base = gpio_base;
  36         if (intr >= 0) {
  37                 i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
  38                 tca6416.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET;
  39         } else {
  40                 i2c_info->irq = -1;
  41                 tca6416.irq_base = -1;
  42         }
  43         return &tca6416;
  44 }
  45
  46 static const struct devs_id tca6416_dev_id __initconst = {
  47         .name = "tca6416",
  48         .type = SFI_DEV_TYPE_I2C,
  49         .delay = 1,
  50         .get_platform_data = &tca6416_platform_data,
  51 };
  52
  53 sfi_device(tca6416_dev_id);