LXR linux/drivers/pwm/pwm-lpss-platform.c

   1/*
   2 * Intel Low Power Subsystem PWM controller driver
   3 *
   4 * Copyright (C) 2014, Intel Corporation
   5 *
   6 * Derived from the original pwm-lpss.c
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12
  13#include <linux/acpi.h>
  14#include <linux/kernel.h>
  15#include <linux/module.h>
  16#include <linux/platform_device.h>
  17
  18#include "pwm-lpss.h"
  19
  20static int pwm_lpss_probe_platform(struct platform_device *pdev)
  21{
  22        const struct pwm_lpss_boardinfo *info;
  23        const struct acpi_device_id *id;
  24        struct pwm_lpss_chip *lpwm;
  25        struct resource *r;
  26
  27        id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
  28        if (!id)
  29                return -ENODEV;
  30
  31        info = (const struct pwm_lpss_boardinfo *)id->driver_data;
  32        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  33
  34        lpwm = pwm_lpss_probe(&pdev->dev, r, info);
  35        if (IS_ERR(lpwm))
  36                return PTR_ERR(lpwm);
  37
  38        platform_set_drvdata(pdev, lpwm);
  39        return 0;
  40}
  41
  42static int pwm_lpss_remove_platform(struct platform_device *pdev)
  43{
  44        struct pwm_lpss_chip *lpwm = platform_get_drvdata(pdev);
  45
  46        return pwm_lpss_remove(lpwm);
  47}
  48
  49static const struct acpi_device_id pwm_lpss_acpi_match[] = {
  50        { "80860F09", (unsigned long)&pwm_lpss_byt_info },
  51        { "80862288", (unsigned long)&pwm_lpss_bsw_info },
  52        { },
  53};
  54MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);
  55
  56static struct platform_driver pwm_lpss_driver_platform = {
  57        .driver = {
  58                .name = "pwm-lpss",
  59                .acpi_match_table = pwm_lpss_acpi_match,
  60        },
  61        .probe = pwm_lpss_probe_platform,
  62        .remove = pwm_lpss_remove_platform,
  63};
  64module_platform_driver(pwm_lpss_driver_platform);
  65
  66MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
  67MODULE_LICENSE("GPL v2");
  68MODULE_ALIAS("platform:pwm-lpss");
  69