Blame view

drivers/pwm/pwm-lpss-platform.c 1.93 KB
c558e39e1   Andy Shevchenko   pwm: lpss: Proper...
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
  /*
   * Intel Low Power Subsystem PWM controller driver
   *
   * Copyright (C) 2014, Intel Corporation
   *
   * Derived from the original pwm-lpss.c
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/acpi.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/platform_device.h>
f080be27d   Qipeng Zha   pwm: lpss: Add su...
17
  #include <linux/pm_runtime.h>
c558e39e1   Andy Shevchenko   pwm: lpss: Proper...
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
  
  #include "pwm-lpss.h"
  
  static int pwm_lpss_probe_platform(struct platform_device *pdev)
  {
  	const struct pwm_lpss_boardinfo *info;
  	const struct acpi_device_id *id;
  	struct pwm_lpss_chip *lpwm;
  	struct resource *r;
  
  	id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
  	if (!id)
  		return -ENODEV;
  
  	info = (const struct pwm_lpss_boardinfo *)id->driver_data;
  	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  
  	lpwm = pwm_lpss_probe(&pdev->dev, r, info);
  	if (IS_ERR(lpwm))
  		return PTR_ERR(lpwm);
  
  	platform_set_drvdata(pdev, lpwm);
f080be27d   Qipeng Zha   pwm: lpss: Add su...
40
41
42
  
  	pm_runtime_set_active(&pdev->dev);
  	pm_runtime_enable(&pdev->dev);
c558e39e1   Andy Shevchenko   pwm: lpss: Proper...
43
44
45
46
47
48
  	return 0;
  }
  
  static int pwm_lpss_remove_platform(struct platform_device *pdev)
  {
  	struct pwm_lpss_chip *lpwm = platform_get_drvdata(pdev);
f080be27d   Qipeng Zha   pwm: lpss: Add su...
49
  	pm_runtime_disable(&pdev->dev);
c558e39e1   Andy Shevchenko   pwm: lpss: Proper...
50
51
52
53
54
55
  	return pwm_lpss_remove(lpwm);
  }
  
  static const struct acpi_device_id pwm_lpss_acpi_match[] = {
  	{ "80860F09", (unsigned long)&pwm_lpss_byt_info },
  	{ "80862288", (unsigned long)&pwm_lpss_bsw_info },
03f00e531   Mika Westerberg   pwm: lpss: Add mo...
56
  	{ "80865AC8", (unsigned long)&pwm_lpss_bxt_info },
c558e39e1   Andy Shevchenko   pwm: lpss: Proper...
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
  	{ },
  };
  MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);
  
  static struct platform_driver pwm_lpss_driver_platform = {
  	.driver = {
  		.name = "pwm-lpss",
  		.acpi_match_table = pwm_lpss_acpi_match,
  	},
  	.probe = pwm_lpss_probe_platform,
  	.remove = pwm_lpss_remove_platform,
  };
  module_platform_driver(pwm_lpss_driver_platform);
  
  MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
  MODULE_LICENSE("GPL v2");
  MODULE_ALIAS("platform:pwm-lpss");