Gitiles
Code Review Sign In
android-review.linaro.org / kernel / hikey-linaro / 4b45efe8526359a11ca60a299bef3aebf413fd77 / . / drivers / mfd / intel-lpss-pci.c
blob: 9236dffeb4d6bc3b73050df89fafa7d786bbca66 [file] [log] [blame]
Andy Shevchenko4b45efe2015-07-27 18:04:03 +0300[diff] [blame^]1/*
2 * Intel LPSS PCI support.
3 *
4 * Copyright (C) 2015, Intel Corporation
5 *
6 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7 * Mika Westerberg <mika.westerberg@linux.intel.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/ioport.h>
15#include <linux/kernel.h>
16#include <linux/module.h>
17#include <linux/pci.h>
18#include <linux/pm.h>
19#include <linux/pm_runtime.h>
20
21#include "intel-lpss.h"
22
23static int intel_lpss_pci_probe(struct pci_dev *pdev,
24 const struct pci_device_id *id)
25{
26 struct intel_lpss_platform_info *info;
27 int ret;
28
29 ret = pcim_enable_device(pdev);
30 if (ret)
31 return ret;
32
33 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
34 GFP_KERNEL);
35 if (!info)
36 return -ENOMEM;
37
38 info->mem = &pdev->resource[0];
39 info->irq = pdev->irq;
40
41 /* Probably it is enough to set this for iDMA capable devices only */
42 pci_set_master(pdev);
43
44 ret = intel_lpss_probe(&pdev->dev, info);
45 if (ret)
46 return ret;
47
48 pm_runtime_put(&pdev->dev);
49 pm_runtime_allow(&pdev->dev);
50
51 return 0;
52}
53
54static void intel_lpss_pci_remove(struct pci_dev *pdev)
55{
56 pm_runtime_forbid(&pdev->dev);
57 pm_runtime_get_sync(&pdev->dev);
58
59 intel_lpss_remove(&pdev->dev);
60}
61
62static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
63
64static const struct intel_lpss_platform_info spt_info = {
65 .clk_rate = 120000000,
66};
67
68static const struct intel_lpss_platform_info spt_uart_info = {
69 .clk_rate = 120000000,
70 .clk_con_id = "baudclk",
71};
72
73static const struct pci_device_id intel_lpss_pci_ids[] = {
74 /* SPT-LP */
75 { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
76 { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
77 { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
78 { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
79 { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_info },
80 { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_info },
81 { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_info },
82 { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_info },
83 { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_info },
84 { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_info },
85 { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
86 /* SPT-H */
87 { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
88 { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
89 { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
90 { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
91 { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_info },
92 { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_info },
93 { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
94 { }
95};
96MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
97
98static struct pci_driver intel_lpss_pci_driver = {
99 .name = "intel-lpss",
100 .id_table = intel_lpss_pci_ids,
101 .probe = intel_lpss_pci_probe,
102 .remove = intel_lpss_pci_remove,
103 .driver = {
104 .pm = &intel_lpss_pci_pm_ops,
105 },
106};
107
108module_pci_driver(intel_lpss_pci_driver);
109
110MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
111MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
112MODULE_DESCRIPTION("Intel LPSS PCI driver");
113MODULE_LICENSE("GPL v2");