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         pdev->d3cold_delay = 0;
  42
  43         /* Probably it is enough to set this for iDMA capable devices only */
  44         pci_set_master(pdev);
  45
  46         ret = intel_lpss_probe(&pdev->dev, info);
  47         if (ret)
  48                 return ret;
  49
  50         pm_runtime_put(&pdev->dev);
  51         pm_runtime_allow(&pdev->dev);
  52
  53         return 0;
  54 }
  55
  56 static void intel_lpss_pci_remove(struct pci_dev *pdev)
  57 {
  58         pm_runtime_forbid(&pdev->dev);
  59         pm_runtime_get_sync(&pdev->dev);
  60
  61         intel_lpss_remove(&pdev->dev);
  62 }
  63
  64 static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
  65
  66 static const struct intel_lpss_platform_info spt_info = {
  67         .clk_rate = 120000000,
  68 };
  69
  70 static const struct intel_lpss_platform_info spt_uart_info = {
  71         .clk_rate = 120000000,
  72         .clk_con_id = "baudclk",
  73 };
  74
  75 static const struct intel_lpss_platform_info bxt_info = {
  76         .clk_rate = 100000000,
  77 };
  78
  79 static const struct intel_lpss_platform_info bxt_uart_info = {
  80         .clk_rate = 100000000,
  81         .clk_con_id = "baudclk",
  82 };
  83
  84 static const struct intel_lpss_platform_info bxt_i2c_info = {
  85         .clk_rate = 133000000,
  86 };
  87
  88 static const struct pci_device_id intel_lpss_pci_ids[] = {
  89         /* BXT */
  90         { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info },
  91         { PCI_VDEVICE(INTEL, 0x0aae), (kernel_ulong_t)&bxt_i2c_info },
  92         { PCI_VDEVICE(INTEL, 0x0ab0), (kernel_ulong_t)&bxt_i2c_info },
  93         { PCI_VDEVICE(INTEL, 0x0ab2), (kernel_ulong_t)&bxt_i2c_info },
  94         { PCI_VDEVICE(INTEL, 0x0ab4), (kernel_ulong_t)&bxt_i2c_info },
  95         { PCI_VDEVICE(INTEL, 0x0ab6), (kernel_ulong_t)&bxt_i2c_info },
  96         { PCI_VDEVICE(INTEL, 0x0ab8), (kernel_ulong_t)&bxt_i2c_info },
  97         { PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info },
  98         { PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info },
  99         { PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info },
 100         { PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info },
 101         { PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info },
 102         { PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info },
 103         { PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info },
 104         { PCI_VDEVICE(INTEL, 0x0aee), (kernel_ulong_t)&bxt_uart_info },
 105         /* APL */
 106         { PCI_VDEVICE(INTEL, 0x5aac), (kernel_ulong_t)&bxt_i2c_info },
 107         { PCI_VDEVICE(INTEL, 0x5aae), (kernel_ulong_t)&bxt_i2c_info },
 108         { PCI_VDEVICE(INTEL, 0x5ab0), (kernel_ulong_t)&bxt_i2c_info },
 109         { PCI_VDEVICE(INTEL, 0x5ab2), (kernel_ulong_t)&bxt_i2c_info },
 110         { PCI_VDEVICE(INTEL, 0x5ab4), (kernel_ulong_t)&bxt_i2c_info },
 111         { PCI_VDEVICE(INTEL, 0x5ab6), (kernel_ulong_t)&bxt_i2c_info },
 112         { PCI_VDEVICE(INTEL, 0x5ab8), (kernel_ulong_t)&bxt_i2c_info },
 113         { PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&bxt_i2c_info },
 114         { PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info },
 115         { PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info },
 116         { PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info },
 117         { PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info },
 118         { PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info },
 119         { PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info },
 120         { PCI_VDEVICE(INTEL, 0x5aee), (kernel_ulong_t)&bxt_uart_info },
 121         /* SPT-LP */
 122         { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
 123         { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
 124         { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
 125         { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
 126         { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_info },
 127         { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_info },
 128         { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_info },
 129         { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_info },
 130         { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_info },
 131         { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_info },
 132         { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
 133         /* SPT-H */
 134         { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
 135         { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
 136         { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
 137         { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
 138         { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_info },
 139         { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_info },
 140         { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
 141         { }
 142 };
 143 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
 144
 145 static struct pci_driver intel_lpss_pci_driver = {
 146         .name = "intel-lpss",
 147         .id_table = intel_lpss_pci_ids,
 148         .probe = intel_lpss_pci_probe,
 149         .remove = intel_lpss_pci_remove,
 150         .driver = {
 151                 .pm = &intel_lpss_pci_pm_ops,
 152         },
 153 };
 154
 155 module_pci_driver(intel_lpss_pci_driver);
 156
 157 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
 158 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
 159 MODULE_DESCRIPTION("Intel LPSS PCI driver");
 160 MODULE_LICENSE("GPL v2");