1// SPDX-License-Identifier: GPL-2.0-only
 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
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/pm_runtime.h>
14
15#include "pwm-lpss.h"
16
17static 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_chip *chip;
22	int err;
23
24	err = pcim_enable_device(pdev);
25	if (err < 0)
26		return err;
27
28	err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
29	if (err)
30		return err;
31
32	info = (struct pwm_lpss_boardinfo *)id->driver_data;
33	chip = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info);
34	if (IS_ERR(chip))
35		return PTR_ERR(chip);
 
 
36
37	pm_runtime_put(&pdev->dev);
38	pm_runtime_allow(&pdev->dev);
39
40	return 0;
41}
42
43static void pwm_lpss_remove_pci(struct pci_dev *pdev)
44{
45	pm_runtime_forbid(&pdev->dev);
46	pm_runtime_get_sync(&pdev->dev);
47}
48
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
49static const struct pci_device_id pwm_lpss_pci_ids[] = {
50	{ PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info},
51	{ PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info},
52	{ PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info},
53	{ PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info},
54	{ PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info},
55	{ PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info},
56	{ PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info},
57	{ PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info},
58	{ PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info},
59	{ },
60};
61MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids);
62
63static struct pci_driver pwm_lpss_driver_pci = {
64	.name = "pwm-lpss",
65	.id_table = pwm_lpss_pci_ids,
66	.probe = pwm_lpss_probe_pci,
67	.remove = pwm_lpss_remove_pci,
 
 
 
68};
69module_pci_driver(pwm_lpss_driver_pci);
70
71MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
72MODULE_LICENSE("GPL v2");
73MODULE_IMPORT_NS("PWM_LPSS");

 1// SPDX-License-Identifier: GPL-2.0-only
 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
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/pm_runtime.h>
14
15#include "pwm-lpss.h"
16
17static 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
24	err = pcim_enable_device(pdev);
25	if (err < 0)
26		return err;
27
28	err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
29	if (err)
30		return err;
31
32	info = (struct pwm_lpss_boardinfo *)id->driver_data;
33	lpwm = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info);
34	if (IS_ERR(lpwm))
35		return PTR_ERR(lpwm);
36
37	pci_set_drvdata(pdev, lpwm);
38
39	pm_runtime_put(&pdev->dev);
40	pm_runtime_allow(&pdev->dev);
41
42	return 0;
43}
44
45static void pwm_lpss_remove_pci(struct pci_dev *pdev)
46{
47	pm_runtime_forbid(&pdev->dev);
48	pm_runtime_get_sync(&pdev->dev);
49}
50
51static 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
60static int pwm_lpss_runtime_resume_pci(struct device *dev)
61{
62	return 0;
63}
64
65static DEFINE_RUNTIME_DEV_PM_OPS(pwm_lpss_pci_pm,
66				 pwm_lpss_runtime_suspend_pci,
67				 pwm_lpss_runtime_resume_pci,
68				 NULL);
69
70static const struct pci_device_id pwm_lpss_pci_ids[] = {
71	{ PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info},
72	{ PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info},
73	{ PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info},
74	{ PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info},
75	{ PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info},
76	{ PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info},
77	{ PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info},
78	{ PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info},
79	{ PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info},
80	{ },
81};
82MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids);
83
84static 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,
89	.driver = {
90		.pm = pm_ptr(&pwm_lpss_pci_pm),
91	},
92};
93module_pci_driver(pwm_lpss_driver_pci);
94
95MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
96MODULE_LICENSE("GPL v2");
97MODULE_IMPORT_NS(PWM_LPSS);