drivers/mfd/intel-lpss-pci.c

   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
  23 static 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
  54 static 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
  62 static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
  63
  64 static const struct intel_lpss_platform_info spt_info = {
  65         .clk_rate = 120000000,
  66 };
  67
  68 static const struct intel_lpss_platform_info spt_uart_info = {
  69         .clk_rate = 120000000,
  70         .clk_con_id = "baudclk",
  71 };
  72
  73 static 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 };
  96 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
  97
  98 static 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
 108 module_pci_driver(intel_lpss_pci_driver);
 109
 110 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
 111 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
 112 MODULE_DESCRIPTION("Intel LPSS PCI driver");
 113 MODULE_LICENSE("GPL v2");