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c558e39e AS |
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"); |