2 * Intel Low Power Subsystem PWM controller PCI 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/kernel.h>
14 #include <linux/module.h>
15 #include <linux/pci.h>
16 #include <linux/pm_runtime.h>
21 static const struct pwm_lpss_boardinfo pwm_lpss_byt_info = {
28 static const struct pwm_lpss_boardinfo pwm_lpss_bsw_info = {
35 static const struct pwm_lpss_boardinfo pwm_lpss_bxt_info = {
42 static const struct pwm_lpss_boardinfo pwm_lpss_tng_info = {
48 static int pwm_lpss_probe_pci(struct pci_dev *pdev,
49 const struct pci_device_id *id)
51 const struct pwm_lpss_boardinfo *info;
52 struct pwm_lpss_chip *lpwm;
55 err = pcim_enable_device(pdev);
59 info = (struct pwm_lpss_boardinfo *)id->driver_data;
60 lpwm = pwm_lpss_probe(&pdev->dev, &pdev->resource[0], info);
64 pci_set_drvdata(pdev, lpwm);
66 pm_runtime_put(&pdev->dev);
67 pm_runtime_allow(&pdev->dev);
72 static void pwm_lpss_remove_pci(struct pci_dev *pdev)
74 struct pwm_lpss_chip *lpwm = pci_get_drvdata(pdev);
76 pm_runtime_forbid(&pdev->dev);
77 pm_runtime_get_sync(&pdev->dev);
79 pwm_lpss_remove(lpwm);
83 static int pwm_lpss_runtime_suspend_pci(struct device *dev)
86 * The PCI core will handle transition to D3 automatically. We only
87 * need to provide runtime PM hooks for that to happen.
92 static int pwm_lpss_runtime_resume_pci(struct device *dev)
98 static const struct dev_pm_ops pwm_lpss_pci_pm = {
99 SET_RUNTIME_PM_OPS(pwm_lpss_runtime_suspend_pci,
100 pwm_lpss_runtime_resume_pci, NULL)
103 static const struct pci_device_id pwm_lpss_pci_ids[] = {
104 { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info},
105 { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info},
106 { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info},
107 { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info},
108 { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info},
109 { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info},
110 { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info},
111 { PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info},
112 { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info},
115 MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids);
117 static struct pci_driver pwm_lpss_driver_pci = {
119 .id_table = pwm_lpss_pci_ids,
120 .probe = pwm_lpss_probe_pci,
121 .remove = pwm_lpss_remove_pci,
123 .pm = &pwm_lpss_pci_pm,
126 module_pci_driver(pwm_lpss_driver_pci);
128 MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
129 MODULE_LICENSE("GPL v2");