LXR linux/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
  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 intel_lpss_platform_info bxt_info = {
  74        .clk_rate = 100000000,
  75};
  76
  77static const struct intel_lpss_platform_info bxt_uart_info = {
  78        .clk_rate = 100000000,
  79        .clk_con_id = "baudclk",
  80};
  81
  82static const struct intel_lpss_platform_info bxt_i2c_info = {
  83        .clk_rate = 133000000,
  84};
  85
  86static const struct pci_device_id intel_lpss_pci_ids[] = {
  87        /* BXT */
  88        { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info },
  89        { PCI_VDEVICE(INTEL, 0x0aae), (kernel_ulong_t)&bxt_i2c_info },
  90        { PCI_VDEVICE(INTEL, 0x0ab0), (kernel_ulong_t)&bxt_i2c_info },
  91        { PCI_VDEVICE(INTEL, 0x0ab2), (kernel_ulong_t)&bxt_i2c_info },
  92        { PCI_VDEVICE(INTEL, 0x0ab4), (kernel_ulong_t)&bxt_i2c_info },
  93        { PCI_VDEVICE(INTEL, 0x0ab6), (kernel_ulong_t)&bxt_i2c_info },
  94        { PCI_VDEVICE(INTEL, 0x0ab8), (kernel_ulong_t)&bxt_i2c_info },
  95        { PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info },
  96        { PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info },
  97        { PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info },
  98        { PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info },
  99        { PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info },
 100        { PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info },
 101        { PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info },
 102        { PCI_VDEVICE(INTEL, 0x0aee), (kernel_ulong_t)&bxt_uart_info },
 103        /* APL */
 104        { PCI_VDEVICE(INTEL, 0x5aac), (kernel_ulong_t)&bxt_i2c_info },
 105        { PCI_VDEVICE(INTEL, 0x5aae), (kernel_ulong_t)&bxt_i2c_info },
 106        { PCI_VDEVICE(INTEL, 0x5ab0), (kernel_ulong_t)&bxt_i2c_info },
 107        { PCI_VDEVICE(INTEL, 0x5ab2), (kernel_ulong_t)&bxt_i2c_info },
 108        { PCI_VDEVICE(INTEL, 0x5ab4), (kernel_ulong_t)&bxt_i2c_info },
 109        { PCI_VDEVICE(INTEL, 0x5ab6), (kernel_ulong_t)&bxt_i2c_info },
 110        { PCI_VDEVICE(INTEL, 0x5ab8), (kernel_ulong_t)&bxt_i2c_info },
 111        { PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&bxt_i2c_info },
 112        { PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info },
 113        { PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info },
 114        { PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info },
 115        { PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info },
 116        { PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info },
 117        { PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info },
 118        { PCI_VDEVICE(INTEL, 0x5aee), (kernel_ulong_t)&bxt_uart_info },
 119        /* SPT-LP */
 120        { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
 121        { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
 122        { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
 123        { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
 124        { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_info },
 125        { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_info },
 126        { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_info },
 127        { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_info },
 128        { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_info },
 129        { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_info },
 130        { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
 131        /* SPT-H */
 132        { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
 133        { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
 134        { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
 135        { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
 136        { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_info },
 137        { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_info },
 138        { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
 139        { }
 140};
 141MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
 142
 143static struct pci_driver intel_lpss_pci_driver = {
 144        .name = "intel-lpss",
 145        .id_table = intel_lpss_pci_ids,
 146        .probe = intel_lpss_pci_probe,
 147        .remove = intel_lpss_pci_remove,
 148        .driver = {
 149                .pm = &intel_lpss_pci_pm_ops,
 150        },
 151};
 152
 153module_pci_driver(intel_lpss_pci_driver);
 154
 155MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
 156MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
 157MODULE_DESCRIPTION("Intel LPSS PCI driver");
 158MODULE_LICENSE("GPL v2");
 159