projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| c558e39e AS |
2 | /* |
| 3 | * Intel Low Power Subsystem PWM controller PCI driver | |
| 4 | * | |
| 5 | * Copyright (C) 2014, Intel Corporation | |
| 6 | * | |
| 7 | * Derived from the original pwm-lpss.c | |
| c558e39e AS |
8 | */ |
| 9 | ||
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/pci.h> | |
| f080be27 | 13 | #include <linux/pm_runtime.h> |
| c558e39e AS |
14 | |
| 15 | #include "pwm-lpss.h" | |
| 16 | ||
| 17 | static int pwm_lpss_probe_pci(struct pci_dev *pdev, | |
| 18 | const struct pci_device_id *id) | |
| 19 | { | |
| 20 | const struct pwm_lpss_boardinfo *info; | |
| 21 | struct pwm_lpss_chip *lpwm; | |
| 22 | int err; | |
| 23 | ||
| 90927fe9 | 24 | err = pcim_enable_device(pdev); |
| c558e39e AS |
25 | if (err < 0) |
| 26 | return err; | |
| 27 | ||
| 68af6fb0 AS |
28 | err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); |
| 29 | if (err) | |
| 30 | return err; | |
| 31 | ||
| c558e39e | 32 | info = (struct pwm_lpss_boardinfo *)id->driver_data; |
| f0f31de3 | 33 | lpwm = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info); |
| c558e39e AS |
34 | if (IS_ERR(lpwm)) |
| 35 | return PTR_ERR(lpwm); | |
| 36 | ||
| 37 | pci_set_drvdata(pdev, lpwm); | |
| f080be27 QZ |
38 | |
| 39 | pm_runtime_put(&pdev->dev); | |
| 40 | pm_runtime_allow(&pdev->dev); | |
| 41 | ||
| c558e39e AS |
42 | return 0; |
| 43 | } | |
| 44 | ||
| 45 | static void pwm_lpss_remove_pci(struct pci_dev *pdev) | |
| 46 | { | |
| f080be27 QZ |
47 | pm_runtime_forbid(&pdev->dev); |
| 48 | pm_runtime_get_sync(&pdev->dev); | |
| c558e39e AS |
49 | } |
| 50 | ||
| f080be27 QZ |
51 | static int pwm_lpss_runtime_suspend_pci(struct device *dev) |
| 52 | { | |
| 53 | /* | |
| 54 | * The PCI core will handle transition to D3 automatically. We only | |
| 55 | * need to provide runtime PM hooks for that to happen. | |
| 56 | */ | |
| 57 | return 0; | |
| 58 | } | |
| 59 | ||
| 60 | static int pwm_lpss_runtime_resume_pci(struct device *dev) | |
| 61 | { | |
| 62 | return 0; | |
| 63 | } | |
| f080be27 | 64 | |
| 163bb6f9 AS |
65 | static DEFINE_RUNTIME_DEV_PM_OPS(pwm_lpss_pci_pm, |
| 66 | pwm_lpss_runtime_suspend_pci, | |
| 67 | pwm_lpss_runtime_resume_pci, | |
| 68 | NULL); | |
| f080be27 | 69 | |
| c558e39e | 70 | static const struct pci_device_id pwm_lpss_pci_ids[] = { |
| 87219cb4 | 71 | { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info}, |
| c558e39e AS |
72 | { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info}, |
| 73 | { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info}, | |
| 3c1460e9 | 74 | { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info}, |
| 87219cb4 | 75 | { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info}, |
| c558e39e AS |
76 | { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info}, |
| 77 | { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info}, | |
| ae252054 | 78 | { PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info}, |
| 03f00e53 | 79 | { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info}, |
| c558e39e AS |
80 | { }, |
| 81 | }; | |
| 82 | MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids); | |
| 83 | ||
| 84 | static struct pci_driver pwm_lpss_driver_pci = { | |
| 85 | .name = "pwm-lpss", | |
| 86 | .id_table = pwm_lpss_pci_ids, | |
| 87 | .probe = pwm_lpss_probe_pci, | |
| 88 | .remove = pwm_lpss_remove_pci, | |
| f080be27 | 89 | .driver = { |
| 163bb6f9 | 90 | .pm = pm_ptr(&pwm_lpss_pci_pm), |
| f080be27 | 91 | }, |
| c558e39e AS |
92 | }; |
| 93 | module_pci_driver(pwm_lpss_driver_pci); | |
| 94 | ||
| 95 | MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS"); | |
| 96 | MODULE_LICENSE("GPL v2"); | |
| a3682d2f | 97 | MODULE_IMPORT_NS(PWM_LPSS); |