drivers/platform/x86/siemens/simatic-ipc-batt-elkhartlake.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Siemens SIMATIC IPC driver for CMOS battery monitoring
   4  *
   5  * Copyright (c) Siemens AG, 2023
   6  *
   7  * Authors:
   8  *  Henning Schild <henning.schild@siemens.com>
   9  */
  10
  11 #include <linux/gpio/machine.h>
  12 #include <linux/gpio/consumer.h>
  13 #include <linux/kernel.h>
  14 #include <linux/module.h>
  15 #include <linux/platform_device.h>
  16
  17 #include "simatic-ipc-batt.h"
  18
  19 static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_21a = {
  20         .table = {
  21                 GPIO_LOOKUP_IDX("INTC1020:04", 18, NULL, 0, GPIO_ACTIVE_HIGH),
  22                 GPIO_LOOKUP_IDX("INTC1020:04", 19, NULL, 1, GPIO_ACTIVE_HIGH),
  23                 GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
  24                 {} /* Terminating entry */
  25         },
  26 };
  27
  28 static void simatic_ipc_batt_elkhartlake_remove(struct platform_device *pdev)
  29 {
  30         simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
  31 }
  32
  33 static int simatic_ipc_batt_elkhartlake_probe(struct platform_device *pdev)
  34 {
  35         return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
  36 }
  37
  38 static struct platform_driver simatic_ipc_batt_driver = {
  39         .probe = simatic_ipc_batt_elkhartlake_probe,
  40         .remove = simatic_ipc_batt_elkhartlake_remove,
  41         .driver = {
  42                 .name = KBUILD_MODNAME,
  43         },
  44 };
  45
  46 module_platform_driver(simatic_ipc_batt_driver);
  47
  48 MODULE_DESCRIPTION("CMOS Battery monitoring for Simatic IPCs based on Elkhart Lake GPIO");
  49 MODULE_LICENSE("GPL");
  50 MODULE_ALIAS("platform:" KBUILD_MODNAME);
  51 MODULE_SOFTDEP("pre: simatic-ipc-batt platform:elkhartlake-pinctrl");
  52 MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");