1 // SPDX-License-Identifier: GPL-2.0-only
3 * Intel Low Power Subsystem PWM controller PCI driver
5 * Copyright (C) 2014, Intel Corporation
7 * Derived from the original pwm-lpss.c
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/pm_runtime.h>
17 static int pwm_lpss_probe_pci(struct pci_dev *pdev,
18 const struct pci_device_id *id)
20 const struct pwm_lpss_boardinfo *info;
21 struct pwm_chip *chip;
24 err = pcim_enable_device(pdev);
28 err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
32 info = (struct pwm_lpss_boardinfo *)id->driver_data;
33 chip = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info);
37 pm_runtime_put(&pdev->dev);
38 pm_runtime_allow(&pdev->dev);
43 static void pwm_lpss_remove_pci(struct pci_dev *pdev)
45 pm_runtime_forbid(&pdev->dev);
46 pm_runtime_get_sync(&pdev->dev);
49 static int pwm_lpss_runtime_suspend_pci(struct device *dev)
52 * The PCI core will handle transition to D3 automatically. We only
53 * need to provide runtime PM hooks for that to happen.
58 static int pwm_lpss_runtime_resume_pci(struct device *dev)
63 static DEFINE_RUNTIME_DEV_PM_OPS(pwm_lpss_pci_pm,
64 pwm_lpss_runtime_suspend_pci,
65 pwm_lpss_runtime_resume_pci,
68 static const struct pci_device_id pwm_lpss_pci_ids[] = {
69 { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info},
70 { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info},
71 { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info},
72 { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info},
73 { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info},
74 { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info},
75 { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info},
76 { PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info},
77 { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info},
80 MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids);
82 static struct pci_driver pwm_lpss_driver_pci = {
84 .id_table = pwm_lpss_pci_ids,
85 .probe = pwm_lpss_probe_pci,
86 .remove = pwm_lpss_remove_pci,
88 .pm = pm_ptr(&pwm_lpss_pci_pm),
91 module_pci_driver(pwm_lpss_driver_pci);
93 MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
94 MODULE_LICENSE("GPL v2");
95 MODULE_IMPORT_NS(PWM_LPSS);