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 #include <linux/property.h>
  21
  22 #include "intel-lpss.h"
  23
  24 static int intel_lpss_pci_probe(struct pci_dev *pdev,
  25                                 const struct pci_device_id *id)
  26 {
  27         struct intel_lpss_platform_info *info;
  28         int ret;
  29
  30         ret = pcim_enable_device(pdev);
  31         if (ret)
  32                 return ret;
  33
  34         info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
  35                             GFP_KERNEL);
  36         if (!info)
  37                 return -ENOMEM;
  38
  39         info->mem = &pdev->resource[0];
  40         info->irq = pdev->irq;
  41
  42         pdev->d3cold_delay = 0;
  43
  44         /* Probably it is enough to set this for iDMA capable devices only */
  45         pci_set_master(pdev);
  46         pci_try_set_mwi(pdev);
  47
  48         ret = intel_lpss_probe(&pdev->dev, info);
  49         if (ret)
  50                 return ret;
  51
  52         pm_runtime_put(&pdev->dev);
  53         pm_runtime_allow(&pdev->dev);
  54
  55         return 0;
  56 }
  57
  58 static void intel_lpss_pci_remove(struct pci_dev *pdev)
  59 {
  60         pm_runtime_forbid(&pdev->dev);
  61         pm_runtime_get_sync(&pdev->dev);
  62
  63         intel_lpss_remove(&pdev->dev);
  64 }
  65
  66 static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
  67
  68 static const struct intel_lpss_platform_info spt_info = {
  69         .clk_rate = 120000000,
  70 };
  71
  72 static struct property_entry spt_i2c_properties[] = {
  73         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
  74         { },
  75 };
  76
  77 static const struct intel_lpss_platform_info spt_i2c_info = {
  78         .clk_rate = 120000000,
  79         .properties = spt_i2c_properties,
  80 };
  81
  82 static struct property_entry uart_properties[] = {
  83         PROPERTY_ENTRY_U32("reg-io-width", 4),
  84         PROPERTY_ENTRY_U32("reg-shift", 2),
  85         PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
  86         { },
  87 };
  88
  89 static const struct intel_lpss_platform_info spt_uart_info = {
  90         .clk_rate = 120000000,
  91         .clk_con_id = "baudclk",
  92         .properties = uart_properties,
  93 };
  94
  95 static const struct intel_lpss_platform_info bxt_info = {
  96         .clk_rate = 100000000,
  97 };
  98
  99 static const struct intel_lpss_platform_info bxt_uart_info = {
 100         .clk_rate = 100000000,
 101         .clk_con_id = "baudclk",
 102         .properties = uart_properties,
 103 };
 104
 105 static struct property_entry bxt_i2c_properties[] = {
 106         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
 107         PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
 108         PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
 109         { },
 110 };
 111
 112 static const struct intel_lpss_platform_info bxt_i2c_info = {
 113         .clk_rate = 133000000,
 114         .properties = bxt_i2c_properties,
 115 };
 116
 117 static struct property_entry apl_i2c_properties[] = {
 118         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
 119         PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
 120         PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
 121         { },
 122 };
 123
 124 static const struct intel_lpss_platform_info apl_i2c_info = {
 125         .clk_rate = 133000000,
 126         .properties = apl_i2c_properties,
 127 };
 128
 129 static struct property_entry glk_i2c_properties[] = {
 130         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 313),
 131         PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
 132         PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 290),
 133         { },
 134 };
 135
 136 static const struct intel_lpss_platform_info glk_i2c_info = {
 137         .clk_rate = 133000000,
 138         .properties = glk_i2c_properties,
 139 };
 140
 141 static const struct intel_lpss_platform_info cnl_i2c_info = {
 142         .clk_rate = 216000000,
 143         .properties = spt_i2c_properties,
 144 };
 145
 146 static const struct pci_device_id intel_lpss_pci_ids[] = {
 147         /* BXT A-Step */
 148         { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info },
 149         { PCI_VDEVICE(INTEL, 0x0aae), (kernel_ulong_t)&bxt_i2c_info },
 150         { PCI_VDEVICE(INTEL, 0x0ab0), (kernel_ulong_t)&bxt_i2c_info },
 151         { PCI_VDEVICE(INTEL, 0x0ab2), (kernel_ulong_t)&bxt_i2c_info },
 152         { PCI_VDEVICE(INTEL, 0x0ab4), (kernel_ulong_t)&bxt_i2c_info },
 153         { PCI_VDEVICE(INTEL, 0x0ab6), (kernel_ulong_t)&bxt_i2c_info },
 154         { PCI_VDEVICE(INTEL, 0x0ab8), (kernel_ulong_t)&bxt_i2c_info },
 155         { PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info },
 156         { PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info },
 157         { PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info },
 158         { PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info },
 159         { PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info },
 160         { PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info },
 161         { PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info },
 162         { PCI_VDEVICE(INTEL, 0x0aee), (kernel_ulong_t)&bxt_uart_info },
 163         /* BXT B-Step */
 164         { PCI_VDEVICE(INTEL, 0x1aac), (kernel_ulong_t)&bxt_i2c_info },
 165         { PCI_VDEVICE(INTEL, 0x1aae), (kernel_ulong_t)&bxt_i2c_info },
 166         { PCI_VDEVICE(INTEL, 0x1ab0), (kernel_ulong_t)&bxt_i2c_info },
 167         { PCI_VDEVICE(INTEL, 0x1ab2), (kernel_ulong_t)&bxt_i2c_info },
 168         { PCI_VDEVICE(INTEL, 0x1ab4), (kernel_ulong_t)&bxt_i2c_info },
 169         { PCI_VDEVICE(INTEL, 0x1ab6), (kernel_ulong_t)&bxt_i2c_info },
 170         { PCI_VDEVICE(INTEL, 0x1ab8), (kernel_ulong_t)&bxt_i2c_info },
 171         { PCI_VDEVICE(INTEL, 0x1aba), (kernel_ulong_t)&bxt_i2c_info },
 172         { PCI_VDEVICE(INTEL, 0x1abc), (kernel_ulong_t)&bxt_uart_info },
 173         { PCI_VDEVICE(INTEL, 0x1abe), (kernel_ulong_t)&bxt_uart_info },
 174         { PCI_VDEVICE(INTEL, 0x1ac0), (kernel_ulong_t)&bxt_uart_info },
 175         { PCI_VDEVICE(INTEL, 0x1ac2), (kernel_ulong_t)&bxt_info },
 176         { PCI_VDEVICE(INTEL, 0x1ac4), (kernel_ulong_t)&bxt_info },
 177         { PCI_VDEVICE(INTEL, 0x1ac6), (kernel_ulong_t)&bxt_info },
 178         { PCI_VDEVICE(INTEL, 0x1aee), (kernel_ulong_t)&bxt_uart_info },
 179         /* EBG */
 180         { PCI_VDEVICE(INTEL, 0x1bad), (kernel_ulong_t)&bxt_uart_info },
 181         { PCI_VDEVICE(INTEL, 0x1bae), (kernel_ulong_t)&bxt_uart_info },
 182         /* GLK */
 183         { PCI_VDEVICE(INTEL, 0x31ac), (kernel_ulong_t)&glk_i2c_info },
 184         { PCI_VDEVICE(INTEL, 0x31ae), (kernel_ulong_t)&glk_i2c_info },
 185         { PCI_VDEVICE(INTEL, 0x31b0), (kernel_ulong_t)&glk_i2c_info },
 186         { PCI_VDEVICE(INTEL, 0x31b2), (kernel_ulong_t)&glk_i2c_info },
 187         { PCI_VDEVICE(INTEL, 0x31b4), (kernel_ulong_t)&glk_i2c_info },
 188         { PCI_VDEVICE(INTEL, 0x31b6), (kernel_ulong_t)&glk_i2c_info },
 189         { PCI_VDEVICE(INTEL, 0x31b8), (kernel_ulong_t)&glk_i2c_info },
 190         { PCI_VDEVICE(INTEL, 0x31ba), (kernel_ulong_t)&glk_i2c_info },
 191         { PCI_VDEVICE(INTEL, 0x31bc), (kernel_ulong_t)&bxt_uart_info },
 192         { PCI_VDEVICE(INTEL, 0x31be), (kernel_ulong_t)&bxt_uart_info },
 193         { PCI_VDEVICE(INTEL, 0x31c0), (kernel_ulong_t)&bxt_uart_info },
 194         { PCI_VDEVICE(INTEL, 0x31ee), (kernel_ulong_t)&bxt_uart_info },
 195         { PCI_VDEVICE(INTEL, 0x31c2), (kernel_ulong_t)&bxt_info },
 196         { PCI_VDEVICE(INTEL, 0x31c4), (kernel_ulong_t)&bxt_info },
 197         { PCI_VDEVICE(INTEL, 0x31c6), (kernel_ulong_t)&bxt_info },
 198         /* ICL-LP */
 199         { PCI_VDEVICE(INTEL, 0x34a8), (kernel_ulong_t)&spt_uart_info },
 200         { PCI_VDEVICE(INTEL, 0x34a9), (kernel_ulong_t)&spt_uart_info },
 201         { PCI_VDEVICE(INTEL, 0x34aa), (kernel_ulong_t)&spt_info },
 202         { PCI_VDEVICE(INTEL, 0x34ab), (kernel_ulong_t)&spt_info },
 203         { PCI_VDEVICE(INTEL, 0x34c5), (kernel_ulong_t)&bxt_i2c_info },
 204         { PCI_VDEVICE(INTEL, 0x34c6), (kernel_ulong_t)&bxt_i2c_info },
 205         { PCI_VDEVICE(INTEL, 0x34c7), (kernel_ulong_t)&spt_uart_info },
 206         { PCI_VDEVICE(INTEL, 0x34e8), (kernel_ulong_t)&bxt_i2c_info },
 207         { PCI_VDEVICE(INTEL, 0x34e9), (kernel_ulong_t)&bxt_i2c_info },
 208         { PCI_VDEVICE(INTEL, 0x34ea), (kernel_ulong_t)&bxt_i2c_info },
 209         { PCI_VDEVICE(INTEL, 0x34eb), (kernel_ulong_t)&bxt_i2c_info },
 210         { PCI_VDEVICE(INTEL, 0x34fb), (kernel_ulong_t)&spt_info },
 211         /* APL */
 212         { PCI_VDEVICE(INTEL, 0x5aac), (kernel_ulong_t)&apl_i2c_info },
 213         { PCI_VDEVICE(INTEL, 0x5aae), (kernel_ulong_t)&apl_i2c_info },
 214         { PCI_VDEVICE(INTEL, 0x5ab0), (kernel_ulong_t)&apl_i2c_info },
 215         { PCI_VDEVICE(INTEL, 0x5ab2), (kernel_ulong_t)&apl_i2c_info },
 216         { PCI_VDEVICE(INTEL, 0x5ab4), (kernel_ulong_t)&apl_i2c_info },
 217         { PCI_VDEVICE(INTEL, 0x5ab6), (kernel_ulong_t)&apl_i2c_info },
 218         { PCI_VDEVICE(INTEL, 0x5ab8), (kernel_ulong_t)&apl_i2c_info },
 219         { PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&apl_i2c_info },
 220         { PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info },
 221         { PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info },
 222         { PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info },
 223         { PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info },
 224         { PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info },
 225         { PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info },
 226         { PCI_VDEVICE(INTEL, 0x5aee), (kernel_ulong_t)&bxt_uart_info },
 227         /* SPT-LP */
 228         { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
 229         { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
 230         { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
 231         { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
 232         { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_i2c_info },
 233         { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_i2c_info },
 234         { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_i2c_info },
 235         { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_i2c_info },
 236         { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_i2c_info },
 237         { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_i2c_info },
 238         { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
 239         /* CNL-LP */
 240         { PCI_VDEVICE(INTEL, 0x9da8), (kernel_ulong_t)&spt_uart_info },
 241         { PCI_VDEVICE(INTEL, 0x9da9), (kernel_ulong_t)&spt_uart_info },
 242         { PCI_VDEVICE(INTEL, 0x9daa), (kernel_ulong_t)&spt_info },
 243         { PCI_VDEVICE(INTEL, 0x9dab), (kernel_ulong_t)&spt_info },
 244         { PCI_VDEVICE(INTEL, 0x9dfb), (kernel_ulong_t)&spt_info },
 245         { PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&cnl_i2c_info },
 246         { PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&cnl_i2c_info },
 247         { PCI_VDEVICE(INTEL, 0x9dc7), (kernel_ulong_t)&spt_uart_info },
 248         { PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&cnl_i2c_info },
 249         { PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&cnl_i2c_info },
 250         { PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&cnl_i2c_info },
 251         { PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&cnl_i2c_info },
 252         /* SPT-H */
 253         { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
 254         { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
 255         { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
 256         { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
 257         { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_i2c_info },
 258         { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_i2c_info },
 259         { PCI_VDEVICE(INTEL, 0xa162), (kernel_ulong_t)&spt_i2c_info },
 260         { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
 261         /* KBL-H */
 262         { PCI_VDEVICE(INTEL, 0xa2a7), (kernel_ulong_t)&spt_uart_info },
 263         { PCI_VDEVICE(INTEL, 0xa2a8), (kernel_ulong_t)&spt_uart_info },
 264         { PCI_VDEVICE(INTEL, 0xa2a9), (kernel_ulong_t)&spt_info },
 265         { PCI_VDEVICE(INTEL, 0xa2aa), (kernel_ulong_t)&spt_info },
 266         { PCI_VDEVICE(INTEL, 0xa2e0), (kernel_ulong_t)&spt_i2c_info },
 267         { PCI_VDEVICE(INTEL, 0xa2e1), (kernel_ulong_t)&spt_i2c_info },
 268         { PCI_VDEVICE(INTEL, 0xa2e2), (kernel_ulong_t)&spt_i2c_info },
 269         { PCI_VDEVICE(INTEL, 0xa2e3), (kernel_ulong_t)&spt_i2c_info },
 270         { PCI_VDEVICE(INTEL, 0xa2e6), (kernel_ulong_t)&spt_uart_info },
 271         /* CNL-H */
 272         { PCI_VDEVICE(INTEL, 0xa328), (kernel_ulong_t)&spt_uart_info },
 273         { PCI_VDEVICE(INTEL, 0xa329), (kernel_ulong_t)&spt_uart_info },
 274         { PCI_VDEVICE(INTEL, 0xa32a), (kernel_ulong_t)&spt_info },
 275         { PCI_VDEVICE(INTEL, 0xa32b), (kernel_ulong_t)&spt_info },
 276         { PCI_VDEVICE(INTEL, 0xa37b), (kernel_ulong_t)&spt_info },
 277         { PCI_VDEVICE(INTEL, 0xa347), (kernel_ulong_t)&spt_uart_info },
 278         { PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&cnl_i2c_info },
 279         { PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&cnl_i2c_info },
 280         { PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&cnl_i2c_info },
 281         { PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&cnl_i2c_info },
 282         { }
 283 };
 284 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
 285
 286 static struct pci_driver intel_lpss_pci_driver = {
 287         .name = "intel-lpss",
 288         .id_table = intel_lpss_pci_ids,
 289         .probe = intel_lpss_pci_probe,
 290         .remove = intel_lpss_pci_remove,
 291         .driver = {
 292                 .pm = &intel_lpss_pci_pm_ops,
 293         },
 294 };
 295
 296 module_pci_driver(intel_lpss_pci_driver);
 297
 298 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
 299 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
 300 MODULE_DESCRIPTION("Intel LPSS PCI driver");
 301 MODULE_LICENSE("GPL v2");