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Commit | Line | Data |
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c558e39e AS |
1 | /* |
2 | * Intel Low Power Subsystem PWM controller PCI 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/kernel.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/pci.h> | |
f080be27 | 16 | #include <linux/pm_runtime.h> |
c558e39e AS |
17 | |
18 | #include "pwm-lpss.h" | |
19 | ||
20 | static int pwm_lpss_probe_pci(struct pci_dev *pdev, | |
21 | const struct pci_device_id *id) | |
22 | { | |
23 | const struct pwm_lpss_boardinfo *info; | |
24 | struct pwm_lpss_chip *lpwm; | |
25 | int err; | |
26 | ||
90927fe9 | 27 | err = pcim_enable_device(pdev); |
c558e39e AS |
28 | if (err < 0) |
29 | return err; | |
30 | ||
31 | info = (struct pwm_lpss_boardinfo *)id->driver_data; | |
32 | lpwm = pwm_lpss_probe(&pdev->dev, &pdev->resource[0], info); | |
33 | if (IS_ERR(lpwm)) | |
34 | return PTR_ERR(lpwm); | |
35 | ||
36 | pci_set_drvdata(pdev, lpwm); | |
f080be27 QZ |
37 | |
38 | pm_runtime_put(&pdev->dev); | |
39 | pm_runtime_allow(&pdev->dev); | |
40 | ||
c558e39e AS |
41 | return 0; |
42 | } | |
43 | ||
44 | static void pwm_lpss_remove_pci(struct pci_dev *pdev) | |
45 | { | |
46 | struct pwm_lpss_chip *lpwm = pci_get_drvdata(pdev); | |
47 | ||
f080be27 QZ |
48 | pm_runtime_forbid(&pdev->dev); |
49 | pm_runtime_get_sync(&pdev->dev); | |
50 | ||
c558e39e | 51 | pwm_lpss_remove(lpwm); |
c558e39e AS |
52 | } |
53 | ||
f080be27 QZ |
54 | #ifdef CONFIG_PM |
55 | static int pwm_lpss_runtime_suspend_pci(struct device *dev) | |
56 | { | |
57 | /* | |
58 | * The PCI core will handle transition to D3 automatically. We only | |
59 | * need to provide runtime PM hooks for that to happen. | |
60 | */ | |
61 | return 0; | |
62 | } | |
63 | ||
64 | static int pwm_lpss_runtime_resume_pci(struct device *dev) | |
65 | { | |
66 | return 0; | |
67 | } | |
68 | #endif | |
69 | ||
70 | static const struct dev_pm_ops pwm_lpss_pci_pm = { | |
71 | SET_RUNTIME_PM_OPS(pwm_lpss_runtime_suspend_pci, | |
72 | pwm_lpss_runtime_resume_pci, NULL) | |
73 | }; | |
74 | ||
c558e39e | 75 | static const struct pci_device_id pwm_lpss_pci_ids[] = { |
87219cb4 | 76 | { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info}, |
c558e39e AS |
77 | { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info}, |
78 | { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info}, | |
87219cb4 | 79 | { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info}, |
c558e39e AS |
80 | { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info}, |
81 | { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info}, | |
03f00e53 | 82 | { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info}, |
c558e39e AS |
83 | { }, |
84 | }; | |
85 | MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids); | |
86 | ||
87 | static struct pci_driver pwm_lpss_driver_pci = { | |
88 | .name = "pwm-lpss", | |
89 | .id_table = pwm_lpss_pci_ids, | |
90 | .probe = pwm_lpss_probe_pci, | |
91 | .remove = pwm_lpss_remove_pci, | |
f080be27 QZ |
92 | .driver = { |
93 | .pm = &pwm_lpss_pci_pm, | |
94 | }, | |
c558e39e AS |
95 | }; |
96 | module_pci_driver(pwm_lpss_driver_pci); | |
97 | ||
98 | MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS"); | |
99 | MODULE_LICENSE("GPL v2"); |