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
pwm_lpss_probe_pci(struct pci_dev * pdev,const struct pci_device_id * id)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_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
pwm_lpss_remove_pci(struct pci_dev * pdev)43 static 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
49 static 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 };
61 MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids);
62
63 static 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 };
69 module_pci_driver(pwm_lpss_driver_pci);
70
71 MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
72 MODULE_LICENSE("GPL v2");
73 MODULE_IMPORT_NS(PWM_LPSS);
74