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 
20 static 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 
42 static 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 
49 static 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 };
54 MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);
55 
56 static 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 };
64 module_platform_driver(pwm_lpss_driver_platform);
65 
66 MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
67 MODULE_LICENSE("GPL v2");
68 MODULE_ALIAS("platform:pwm-lpss");
69