net/mlx5e: Make function mlx5e_change_rep_mtu() static
[linux-2.6/btrfs-unstable.git] / drivers / pwm / pwm-lpss-platform.c
blob5d6ed1507d29284f2ba28f2cc781f4b797067f01
1 /*
2 * Intel Low Power Subsystem PWM controller driver
4 * Copyright (C) 2014, Intel Corporation
6 * Derived from the original pwm-lpss.c
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.
13 #include <linux/acpi.h>
14 #include <linux/kernel.h>
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17 #include <linux/pm_runtime.h>
19 #include "pwm-lpss.h"
21 /* BayTrail */
22 static const struct pwm_lpss_boardinfo pwm_lpss_byt_info = {
23 .clk_rate = 25000000,
24 .npwm = 1,
25 .base_unit_bits = 16,
28 /* Braswell */
29 static const struct pwm_lpss_boardinfo pwm_lpss_bsw_info = {
30 .clk_rate = 19200000,
31 .npwm = 1,
32 .base_unit_bits = 16,
35 /* Broxton */
36 static const struct pwm_lpss_boardinfo pwm_lpss_bxt_info = {
37 .clk_rate = 19200000,
38 .npwm = 4,
39 .base_unit_bits = 22,
40 .bypass = true,
43 static int pwm_lpss_probe_platform(struct platform_device *pdev)
45 const struct pwm_lpss_boardinfo *info;
46 const struct acpi_device_id *id;
47 struct pwm_lpss_chip *lpwm;
48 struct resource *r;
50 id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev);
51 if (!id)
52 return -ENODEV;
54 info = (const struct pwm_lpss_boardinfo *)id->driver_data;
55 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
57 lpwm = pwm_lpss_probe(&pdev->dev, r, info);
58 if (IS_ERR(lpwm))
59 return PTR_ERR(lpwm);
61 platform_set_drvdata(pdev, lpwm);
63 pm_runtime_set_active(&pdev->dev);
64 pm_runtime_enable(&pdev->dev);
66 return 0;
69 static int pwm_lpss_remove_platform(struct platform_device *pdev)
71 struct pwm_lpss_chip *lpwm = platform_get_drvdata(pdev);
73 pm_runtime_disable(&pdev->dev);
74 return pwm_lpss_remove(lpwm);
77 static const struct acpi_device_id pwm_lpss_acpi_match[] = {
78 { "80860F09", (unsigned long)&pwm_lpss_byt_info },
79 { "80862288", (unsigned long)&pwm_lpss_bsw_info },
80 { "80865AC8", (unsigned long)&pwm_lpss_bxt_info },
81 { },
83 MODULE_DEVICE_TABLE(acpi, pwm_lpss_acpi_match);
85 static struct platform_driver pwm_lpss_driver_platform = {
86 .driver = {
87 .name = "pwm-lpss",
88 .acpi_match_table = pwm_lpss_acpi_match,
90 .probe = pwm_lpss_probe_platform,
91 .remove = pwm_lpss_remove_platform,
93 module_platform_driver(pwm_lpss_driver_platform);
95 MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
96 MODULE_LICENSE("GPL v2");
97 MODULE_ALIAS("platform:pwm-lpss");