drivers/mfd/intel-lpss-pci.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Intel LPSS PCI support.
   4  *
   5  * Copyright (C) 2015, Intel Corporation
   6  *
   7  * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
   8  *          Mika Westerberg <mika.westerberg@linux.intel.com>
   9  */
  10
  11 #include <linux/ioport.h>
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/pm_runtime.h>
  16 #include <linux/property.h>
  17
  18 #include "intel-lpss.h"
  19
  20 static int intel_lpss_pci_probe(struct pci_dev *pdev,
  21                                 const struct pci_device_id *id)
  22 {
  23         struct intel_lpss_platform_info *info;
  24         int ret;
  25
  26         ret = pcim_enable_device(pdev);
  27         if (ret)
  28                 return ret;
  29
  30         info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
  31                             GFP_KERNEL);
  32         if (!info)
  33                 return -ENOMEM;
  34
  35         info->mem = &pdev->resource[0];
  36         info->irq = pdev->irq;
  37
  38         /* Probably it is enough to set this for iDMA capable devices only */
  39         pci_set_master(pdev);
  40         pci_try_set_mwi(pdev);
  41
  42         ret = intel_lpss_probe(&pdev->dev, info);
  43         if (ret)
  44                 return ret;
  45
  46         pm_runtime_put(&pdev->dev);
  47         pm_runtime_allow(&pdev->dev);
  48
  49         return 0;
  50 }
  51
  52 static void intel_lpss_pci_remove(struct pci_dev *pdev)
  53 {
  54         pm_runtime_forbid(&pdev->dev);
  55         pm_runtime_get_sync(&pdev->dev);
  56
  57         intel_lpss_remove(&pdev->dev);
  58 }
  59
  60 static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
  61
  62 static const struct intel_lpss_platform_info spt_info = {
  63         .clk_rate = 120000000,
  64 };
  65
  66 static struct property_entry spt_i2c_properties[] = {
  67         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
  68         { },
  69 };
  70
  71 static const struct intel_lpss_platform_info spt_i2c_info = {
  72         .clk_rate = 120000000,
  73         .properties = spt_i2c_properties,
  74 };
  75
  76 static struct property_entry uart_properties[] = {
  77         PROPERTY_ENTRY_U32("reg-io-width", 4),
  78         PROPERTY_ENTRY_U32("reg-shift", 2),
  79         PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
  80         { },
  81 };
  82
  83 static const struct intel_lpss_platform_info spt_uart_info = {
  84         .clk_rate = 120000000,
  85         .clk_con_id = "baudclk",
  86         .properties = uart_properties,
  87 };
  88
  89 static const struct intel_lpss_platform_info bxt_info = {
  90         .clk_rate = 100000000,
  91 };
  92
  93 static const struct intel_lpss_platform_info bxt_uart_info = {
  94         .clk_rate = 100000000,
  95         .clk_con_id = "baudclk",
  96         .properties = uart_properties,
  97 };
  98
  99 static struct property_entry bxt_i2c_properties[] = {
 100         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
 101         PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
 102         PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
 103         { },
 104 };
 105
 106 static const struct intel_lpss_platform_info bxt_i2c_info = {
 107         .clk_rate = 133000000,
 108         .properties = bxt_i2c_properties,
 109 };
 110
 111 static struct property_entry apl_i2c_properties[] = {
 112         PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
 113         PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
 114         PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
 115         { },
 116 };
 117
 118 static const struct intel_lpss_platform_info apl_i2c_info = {
 119         .clk_rate = 133000000,
 120         .properties = apl_i2c_properties,
 121 };
 122
 123 static const struct intel_lpss_platform_info cnl_i2c_info = {
 124         .clk_rate = 216000000,
 125         .properties = spt_i2c_properties,
 126 };
 127
 128 static const struct pci_device_id intel_lpss_pci_ids[] = {
 129         /* CML */
 130         { PCI_VDEVICE(INTEL, 0x02a8), (kernel_ulong_t)&spt_uart_info },
 131         { PCI_VDEVICE(INTEL, 0x02a9), (kernel_ulong_t)&spt_uart_info },
 132         { PCI_VDEVICE(INTEL, 0x02aa), (kernel_ulong_t)&spt_info },
 133         { PCI_VDEVICE(INTEL, 0x02ab), (kernel_ulong_t)&spt_info },
 134         { PCI_VDEVICE(INTEL, 0x02c5), (kernel_ulong_t)&cnl_i2c_info },
 135         { PCI_VDEVICE(INTEL, 0x02c6), (kernel_ulong_t)&cnl_i2c_info },
 136         { PCI_VDEVICE(INTEL, 0x02c7), (kernel_ulong_t)&spt_uart_info },
 137         { PCI_VDEVICE(INTEL, 0x02e8), (kernel_ulong_t)&cnl_i2c_info },
 138         { PCI_VDEVICE(INTEL, 0x02e9), (kernel_ulong_t)&cnl_i2c_info },
 139         { PCI_VDEVICE(INTEL, 0x02ea), (kernel_ulong_t)&cnl_i2c_info },
 140         { PCI_VDEVICE(INTEL, 0x02eb), (kernel_ulong_t)&cnl_i2c_info },
 141         { PCI_VDEVICE(INTEL, 0x02fb), (kernel_ulong_t)&spt_info },
 142         /* BXT A-Step */
 143         { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info },
 144         { PCI_VDEVICE(INTEL, 0x0aae), (kernel_ulong_t)&bxt_i2c_info },
 145         { PCI_VDEVICE(INTEL, 0x0ab0), (kernel_ulong_t)&bxt_i2c_info },
 146         { PCI_VDEVICE(INTEL, 0x0ab2), (kernel_ulong_t)&bxt_i2c_info },
 147         { PCI_VDEVICE(INTEL, 0x0ab4), (kernel_ulong_t)&bxt_i2c_info },
 148         { PCI_VDEVICE(INTEL, 0x0ab6), (kernel_ulong_t)&bxt_i2c_info },
 149         { PCI_VDEVICE(INTEL, 0x0ab8), (kernel_ulong_t)&bxt_i2c_info },
 150         { PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info },
 151         { PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info },
 152         { PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info },
 153         { PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info },
 154         { PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info },
 155         { PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info },
 156         { PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info },
 157         { PCI_VDEVICE(INTEL, 0x0aee), (kernel_ulong_t)&bxt_uart_info },
 158         /* BXT B-Step */
 159         { PCI_VDEVICE(INTEL, 0x1aac), (kernel_ulong_t)&bxt_i2c_info },
 160         { PCI_VDEVICE(INTEL, 0x1aae), (kernel_ulong_t)&bxt_i2c_info },
 161         { PCI_VDEVICE(INTEL, 0x1ab0), (kernel_ulong_t)&bxt_i2c_info },
 162         { PCI_VDEVICE(INTEL, 0x1ab2), (kernel_ulong_t)&bxt_i2c_info },
 163         { PCI_VDEVICE(INTEL, 0x1ab4), (kernel_ulong_t)&bxt_i2c_info },
 164         { PCI_VDEVICE(INTEL, 0x1ab6), (kernel_ulong_t)&bxt_i2c_info },
 165         { PCI_VDEVICE(INTEL, 0x1ab8), (kernel_ulong_t)&bxt_i2c_info },
 166         { PCI_VDEVICE(INTEL, 0x1aba), (kernel_ulong_t)&bxt_i2c_info },
 167         { PCI_VDEVICE(INTEL, 0x1abc), (kernel_ulong_t)&bxt_uart_info },
 168         { PCI_VDEVICE(INTEL, 0x1abe), (kernel_ulong_t)&bxt_uart_info },
 169         { PCI_VDEVICE(INTEL, 0x1ac0), (kernel_ulong_t)&bxt_uart_info },
 170         { PCI_VDEVICE(INTEL, 0x1ac2), (kernel_ulong_t)&bxt_info },
 171         { PCI_VDEVICE(INTEL, 0x1ac4), (kernel_ulong_t)&bxt_info },
 172         { PCI_VDEVICE(INTEL, 0x1ac6), (kernel_ulong_t)&bxt_info },
 173         { PCI_VDEVICE(INTEL, 0x1aee), (kernel_ulong_t)&bxt_uart_info },
 174         /* GLK */
 175         { PCI_VDEVICE(INTEL, 0x31ac), (kernel_ulong_t)&bxt_i2c_info },
 176         { PCI_VDEVICE(INTEL, 0x31ae), (kernel_ulong_t)&bxt_i2c_info },
 177         { PCI_VDEVICE(INTEL, 0x31b0), (kernel_ulong_t)&bxt_i2c_info },
 178         { PCI_VDEVICE(INTEL, 0x31b2), (kernel_ulong_t)&bxt_i2c_info },
 179         { PCI_VDEVICE(INTEL, 0x31b4), (kernel_ulong_t)&bxt_i2c_info },
 180         { PCI_VDEVICE(INTEL, 0x31b6), (kernel_ulong_t)&bxt_i2c_info },
 181         { PCI_VDEVICE(INTEL, 0x31b8), (kernel_ulong_t)&bxt_i2c_info },
 182         { PCI_VDEVICE(INTEL, 0x31ba), (kernel_ulong_t)&bxt_i2c_info },
 183         { PCI_VDEVICE(INTEL, 0x31bc), (kernel_ulong_t)&bxt_uart_info },
 184         { PCI_VDEVICE(INTEL, 0x31be), (kernel_ulong_t)&bxt_uart_info },
 185         { PCI_VDEVICE(INTEL, 0x31c0), (kernel_ulong_t)&bxt_uart_info },
 186         { PCI_VDEVICE(INTEL, 0x31c2), (kernel_ulong_t)&bxt_info },
 187         { PCI_VDEVICE(INTEL, 0x31c4), (kernel_ulong_t)&bxt_info },
 188         { PCI_VDEVICE(INTEL, 0x31c6), (kernel_ulong_t)&bxt_info },
 189         { PCI_VDEVICE(INTEL, 0x31ee), (kernel_ulong_t)&bxt_uart_info },
 190         /* ICL-LP */
 191         { PCI_VDEVICE(INTEL, 0x34a8), (kernel_ulong_t)&spt_uart_info },
 192         { PCI_VDEVICE(INTEL, 0x34a9), (kernel_ulong_t)&spt_uart_info },
 193         { PCI_VDEVICE(INTEL, 0x34aa), (kernel_ulong_t)&spt_info },
 194         { PCI_VDEVICE(INTEL, 0x34ab), (kernel_ulong_t)&spt_info },
 195         { PCI_VDEVICE(INTEL, 0x34c5), (kernel_ulong_t)&bxt_i2c_info },
 196         { PCI_VDEVICE(INTEL, 0x34c6), (kernel_ulong_t)&bxt_i2c_info },
 197         { PCI_VDEVICE(INTEL, 0x34c7), (kernel_ulong_t)&spt_uart_info },
 198         { PCI_VDEVICE(INTEL, 0x34e8), (kernel_ulong_t)&bxt_i2c_info },
 199         { PCI_VDEVICE(INTEL, 0x34e9), (kernel_ulong_t)&bxt_i2c_info },
 200         { PCI_VDEVICE(INTEL, 0x34ea), (kernel_ulong_t)&bxt_i2c_info },
 201         { PCI_VDEVICE(INTEL, 0x34eb), (kernel_ulong_t)&bxt_i2c_info },
 202         { PCI_VDEVICE(INTEL, 0x34fb), (kernel_ulong_t)&spt_info },
 203         /* EHL */
 204         { PCI_VDEVICE(INTEL, 0x4b28), (kernel_ulong_t)&bxt_uart_info },
 205         { PCI_VDEVICE(INTEL, 0x4b29), (kernel_ulong_t)&bxt_uart_info },
 206         { PCI_VDEVICE(INTEL, 0x4b2a), (kernel_ulong_t)&bxt_info },
 207         { PCI_VDEVICE(INTEL, 0x4b2b), (kernel_ulong_t)&bxt_info },
 208         { PCI_VDEVICE(INTEL, 0x4b37), (kernel_ulong_t)&bxt_info },
 209         { PCI_VDEVICE(INTEL, 0x4b44), (kernel_ulong_t)&bxt_i2c_info },
 210         { PCI_VDEVICE(INTEL, 0x4b45), (kernel_ulong_t)&bxt_i2c_info },
 211         { PCI_VDEVICE(INTEL, 0x4b4b), (kernel_ulong_t)&bxt_i2c_info },
 212         { PCI_VDEVICE(INTEL, 0x4b4c), (kernel_ulong_t)&bxt_i2c_info },
 213         { PCI_VDEVICE(INTEL, 0x4b4d), (kernel_ulong_t)&bxt_uart_info },
 214         { PCI_VDEVICE(INTEL, 0x4b78), (kernel_ulong_t)&bxt_i2c_info },
 215         { PCI_VDEVICE(INTEL, 0x4b79), (kernel_ulong_t)&bxt_i2c_info },
 216         { PCI_VDEVICE(INTEL, 0x4b7a), (kernel_ulong_t)&bxt_i2c_info },
 217         { PCI_VDEVICE(INTEL, 0x4b7b), (kernel_ulong_t)&bxt_i2c_info },
 218         /* APL */
 219         { PCI_VDEVICE(INTEL, 0x5aac), (kernel_ulong_t)&apl_i2c_info },
 220         { PCI_VDEVICE(INTEL, 0x5aae), (kernel_ulong_t)&apl_i2c_info },
 221         { PCI_VDEVICE(INTEL, 0x5ab0), (kernel_ulong_t)&apl_i2c_info },
 222         { PCI_VDEVICE(INTEL, 0x5ab2), (kernel_ulong_t)&apl_i2c_info },
 223         { PCI_VDEVICE(INTEL, 0x5ab4), (kernel_ulong_t)&apl_i2c_info },
 224         { PCI_VDEVICE(INTEL, 0x5ab6), (kernel_ulong_t)&apl_i2c_info },
 225         { PCI_VDEVICE(INTEL, 0x5ab8), (kernel_ulong_t)&apl_i2c_info },
 226         { PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&apl_i2c_info },
 227         { PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info },
 228         { PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info },
 229         { PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info },
 230         { PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info },
 231         { PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info },
 232         { PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info },
 233         { PCI_VDEVICE(INTEL, 0x5aee), (kernel_ulong_t)&bxt_uart_info },
 234         /* SPT-LP */
 235         { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
 236         { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
 237         { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
 238         { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
 239         { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_i2c_info },
 240         { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_i2c_info },
 241         { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_i2c_info },
 242         { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_i2c_info },
 243         { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_i2c_info },
 244         { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_i2c_info },
 245         { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
 246         /* CNL-LP */
 247         { PCI_VDEVICE(INTEL, 0x9da8), (kernel_ulong_t)&spt_uart_info },
 248         { PCI_VDEVICE(INTEL, 0x9da9), (kernel_ulong_t)&spt_uart_info },
 249         { PCI_VDEVICE(INTEL, 0x9daa), (kernel_ulong_t)&spt_info },
 250         { PCI_VDEVICE(INTEL, 0x9dab), (kernel_ulong_t)&spt_info },
 251         { PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&cnl_i2c_info },
 252         { PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&cnl_i2c_info },
 253         { PCI_VDEVICE(INTEL, 0x9dc7), (kernel_ulong_t)&spt_uart_info },
 254         { PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&cnl_i2c_info },
 255         { PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&cnl_i2c_info },
 256         { PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&cnl_i2c_info },
 257         { PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&cnl_i2c_info },
 258         { PCI_VDEVICE(INTEL, 0x9dfb), (kernel_ulong_t)&spt_info },
 259         /* SPT-H */
 260         { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
 261         { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
 262         { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
 263         { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
 264         { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_i2c_info },
 265         { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_i2c_info },
 266         { PCI_VDEVICE(INTEL, 0xa162), (kernel_ulong_t)&spt_i2c_info },
 267         { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
 268         /* KBL-H */
 269         { PCI_VDEVICE(INTEL, 0xa2a7), (kernel_ulong_t)&spt_uart_info },
 270         { PCI_VDEVICE(INTEL, 0xa2a8), (kernel_ulong_t)&spt_uart_info },
 271         { PCI_VDEVICE(INTEL, 0xa2a9), (kernel_ulong_t)&spt_info },
 272         { PCI_VDEVICE(INTEL, 0xa2aa), (kernel_ulong_t)&spt_info },
 273         { PCI_VDEVICE(INTEL, 0xa2e0), (kernel_ulong_t)&spt_i2c_info },
 274         { PCI_VDEVICE(INTEL, 0xa2e1), (kernel_ulong_t)&spt_i2c_info },
 275         { PCI_VDEVICE(INTEL, 0xa2e2), (kernel_ulong_t)&spt_i2c_info },
 276         { PCI_VDEVICE(INTEL, 0xa2e3), (kernel_ulong_t)&spt_i2c_info },
 277         { PCI_VDEVICE(INTEL, 0xa2e6), (kernel_ulong_t)&spt_uart_info },
 278         /* CNL-H */
 279         { PCI_VDEVICE(INTEL, 0xa328), (kernel_ulong_t)&spt_uart_info },
 280         { PCI_VDEVICE(INTEL, 0xa329), (kernel_ulong_t)&spt_uart_info },
 281         { PCI_VDEVICE(INTEL, 0xa32a), (kernel_ulong_t)&spt_info },
 282         { PCI_VDEVICE(INTEL, 0xa32b), (kernel_ulong_t)&spt_info },
 283         { PCI_VDEVICE(INTEL, 0xa347), (kernel_ulong_t)&spt_uart_info },
 284         { PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&cnl_i2c_info },
 285         { PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&cnl_i2c_info },
 286         { PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&cnl_i2c_info },
 287         { PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&cnl_i2c_info },
 288         { PCI_VDEVICE(INTEL, 0xa37b), (kernel_ulong_t)&spt_info },
 289         { }
 290 };
 291 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
 292
 293 static struct pci_driver intel_lpss_pci_driver = {
 294         .name = "intel-lpss",
 295         .id_table = intel_lpss_pci_ids,
 296         .probe = intel_lpss_pci_probe,
 297         .remove = intel_lpss_pci_remove,
 298         .driver = {
 299                 .pm = &intel_lpss_pci_pm_ops,
 300         },
 301 };
 302
 303 module_pci_driver(intel_lpss_pci_driver);
 304
 305 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
 306 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
 307 MODULE_DESCRIPTION("Intel LPSS PCI driver");
 308 MODULE_LICENSE("GPL v2");