linux/drivers/net/can/softing/softing_cs.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * Copyright (C) 2008-2010
   4 *
   5 * - Kurt Van Dijck, EIA Electronics
   6 */
   7
   8#include <linux/module.h>
   9#include <linux/kernel.h>
  10#include <linux/slab.h>
  11
  12#include <pcmcia/cistpl.h>
  13#include <pcmcia/ds.h>
  14
  15#include "softing_platform.h"
  16
  17static int softingcs_index;
  18static DEFINE_SPINLOCK(softingcs_index_lock);
  19
  20static int softingcs_reset(struct platform_device *pdev, int v);
  21static int softingcs_enable_irq(struct platform_device *pdev, int v);
  22
  23/*
  24 * platform_data descriptions
  25 */
  26#define MHZ (1000*1000)
  27static const struct softing_platform_data softingcs_platform_data[] = {
  28{
  29        .name = "CANcard",
  30        .manf = 0x0168, .prod = 0x001,
  31        .generation = 1,
  32        .nbus = 2,
  33        .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  34        .dpram_size = 0x0800,
  35        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  36        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  37        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  38        .reset = softingcs_reset,
  39        .enable_irq = softingcs_enable_irq,
  40}, {
  41        .name = "CANcard-NEC",
  42        .manf = 0x0168, .prod = 0x002,
  43        .generation = 1,
  44        .nbus = 2,
  45        .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  46        .dpram_size = 0x0800,
  47        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  48        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  49        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  50        .reset = softingcs_reset,
  51        .enable_irq = softingcs_enable_irq,
  52}, {
  53        .name = "CANcard-SJA",
  54        .manf = 0x0168, .prod = 0x004,
  55        .generation = 1,
  56        .nbus = 2,
  57        .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  58        .dpram_size = 0x0800,
  59        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  60        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  61        .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  62        .reset = softingcs_reset,
  63        .enable_irq = softingcs_enable_irq,
  64}, {
  65        .name = "CANcard-2",
  66        .manf = 0x0168, .prod = 0x005,
  67        .generation = 2,
  68        .nbus = 2,
  69        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  70        .dpram_size = 0x1000,
  71        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  72        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  73        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  74        .reset = softingcs_reset,
  75        .enable_irq = NULL,
  76}, {
  77        .name = "Vector-CANcard",
  78        .manf = 0x0168, .prod = 0x081,
  79        .generation = 1,
  80        .nbus = 2,
  81        .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
  82        .dpram_size = 0x0800,
  83        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  84        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  85        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  86        .reset = softingcs_reset,
  87        .enable_irq = softingcs_enable_irq,
  88}, {
  89        .name = "Vector-CANcard-SJA",
  90        .manf = 0x0168, .prod = 0x084,
  91        .generation = 1,
  92        .nbus = 2,
  93        .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  94        .dpram_size = 0x0800,
  95        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  96        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  97        .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  98        .reset = softingcs_reset,
  99        .enable_irq = softingcs_enable_irq,
 100}, {
 101        .name = "Vector-CANcard-2",
 102        .manf = 0x0168, .prod = 0x085,
 103        .generation = 2,
 104        .nbus = 2,
 105        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 106        .dpram_size = 0x1000,
 107        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 108        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 109        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 110        .reset = softingcs_reset,
 111        .enable_irq = NULL,
 112}, {
 113        .name = "EDICcard-NEC",
 114        .manf = 0x0168, .prod = 0x102,
 115        .generation = 1,
 116        .nbus = 2,
 117        .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
 118        .dpram_size = 0x0800,
 119        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
 120        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
 121        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
 122        .reset = softingcs_reset,
 123        .enable_irq = softingcs_enable_irq,
 124}, {
 125        .name = "EDICcard-2",
 126        .manf = 0x0168, .prod = 0x105,
 127        .generation = 2,
 128        .nbus = 2,
 129        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 130        .dpram_size = 0x1000,
 131        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 132        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 133        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 134        .reset = softingcs_reset,
 135        .enable_irq = NULL,
 136}, {
 137        0, 0,
 138},
 139};
 140
 141MODULE_FIRMWARE(fw_dir "bcard.bin");
 142MODULE_FIRMWARE(fw_dir "ldcard.bin");
 143MODULE_FIRMWARE(fw_dir "cancard.bin");
 144MODULE_FIRMWARE(fw_dir "cansja.bin");
 145
 146MODULE_FIRMWARE(fw_dir "bcard2.bin");
 147MODULE_FIRMWARE(fw_dir "ldcard2.bin");
 148MODULE_FIRMWARE(fw_dir "cancrd2.bin");
 149
 150static const struct softing_platform_data
 151*softingcs_find_platform_data(unsigned int manf, unsigned int prod)
 152{
 153        const struct softing_platform_data *lp;
 154
 155        for (lp = softingcs_platform_data; lp->manf; ++lp) {
 156                if ((lp->manf == manf) && (lp->prod == prod))
 157                        return lp;
 158        }
 159        return NULL;
 160}
 161
 162/*
 163 * platformdata callbacks
 164 */
 165static int softingcs_reset(struct platform_device *pdev, int v)
 166{
 167        struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 168
 169        dev_dbg(&pdev->dev, "pcmcia config [2] %02x\n", v ? 0 : 0x20);
 170        return pcmcia_write_config_byte(pcmcia, 2, v ? 0 : 0x20);
 171}
 172
 173static int softingcs_enable_irq(struct platform_device *pdev, int v)
 174{
 175        struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 176
 177        dev_dbg(&pdev->dev, "pcmcia config [0] %02x\n", v ? 0x60 : 0);
 178        return pcmcia_write_config_byte(pcmcia, 0, v ? 0x60 : 0);
 179}
 180
 181/*
 182 * pcmcia check
 183 */
 184static int softingcs_probe_config(struct pcmcia_device *pcmcia, void *priv_data)
 185{
 186        struct softing_platform_data *pdat = priv_data;
 187        struct resource *pres;
 188        int memspeed = 0;
 189
 190        WARN_ON(!pdat);
 191        pres = pcmcia->resource[PCMCIA_IOMEM_0];
 192        if (resource_size(pres) < 0x1000)
 193                return -ERANGE;
 194
 195        pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 196        if (pdat->generation < 2) {
 197                pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8;
 198                memspeed = 3;
 199        } else {
 200                pres->flags |= WIN_DATA_WIDTH_16;
 201        }
 202        return pcmcia_request_window(pcmcia, pres, memspeed);
 203}
 204
 205static void softingcs_remove(struct pcmcia_device *pcmcia)
 206{
 207        struct platform_device *pdev = pcmcia->priv;
 208
 209        /* free bits */
 210        platform_device_unregister(pdev);
 211        /* release pcmcia stuff */
 212        pcmcia_disable_device(pcmcia);
 213}
 214
 215/*
 216 * platform_device wrapper
 217 * pdev->resource has 2 entries: io & irq
 218 */
 219static void softingcs_pdev_release(struct device *dev)
 220{
 221        struct platform_device *pdev = to_platform_device(dev);
 222        kfree(pdev);
 223}
 224
 225static int softingcs_probe(struct pcmcia_device *pcmcia)
 226{
 227        int ret;
 228        struct platform_device *pdev;
 229        const struct softing_platform_data *pdat;
 230        struct resource *pres;
 231        struct dev {
 232                struct platform_device pdev;
 233                struct resource res[2];
 234        } *dev;
 235
 236        /* find matching platform_data */
 237        pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id);
 238        if (!pdat)
 239                return -ENOTTY;
 240
 241        /* setup pcmcia device */
 242        pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM |
 243                CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
 244        ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat);
 245        if (ret)
 246                goto pcmcia_failed;
 247
 248        ret = pcmcia_enable_device(pcmcia);
 249        if (ret < 0)
 250                goto pcmcia_failed;
 251
 252        pres = pcmcia->resource[PCMCIA_IOMEM_0];
 253        if (!pres) {
 254                ret = -EBADF;
 255                goto pcmcia_bad;
 256        }
 257
 258        /* create softing platform device */
 259        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 260        if (!dev) {
 261                ret = -ENOMEM;
 262                goto mem_failed;
 263        }
 264        dev->pdev.resource = dev->res;
 265        dev->pdev.num_resources = ARRAY_SIZE(dev->res);
 266        dev->pdev.dev.release = softingcs_pdev_release;
 267
 268        pdev = &dev->pdev;
 269        pdev->dev.platform_data = (void *)pdat;
 270        pdev->dev.parent = &pcmcia->dev;
 271        pcmcia->priv = pdev;
 272
 273        /* platform device resources */
 274        pdev->resource[0].flags = IORESOURCE_MEM;
 275        pdev->resource[0].start = pres->start;
 276        pdev->resource[0].end = pres->end;
 277
 278        pdev->resource[1].flags = IORESOURCE_IRQ;
 279        pdev->resource[1].start = pcmcia->irq;
 280        pdev->resource[1].end = pdev->resource[1].start;
 281
 282        /* platform device setup */
 283        spin_lock(&softingcs_index_lock);
 284        pdev->id = softingcs_index++;
 285        spin_unlock(&softingcs_index_lock);
 286        pdev->name = "softing";
 287        dev_set_name(&pdev->dev, "softingcs.%i", pdev->id);
 288        ret = platform_device_register(pdev);
 289        if (ret < 0)
 290                goto platform_failed;
 291
 292        dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev));
 293        return 0;
 294
 295platform_failed:
 296        platform_device_put(pdev);
 297mem_failed:
 298pcmcia_bad:
 299pcmcia_failed:
 300        pcmcia_disable_device(pcmcia);
 301        pcmcia->priv = NULL;
 302        return ret;
 303}
 304
 305static const struct pcmcia_device_id softingcs_ids[] = {
 306        /* softing */
 307        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
 308        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),
 309        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004),
 310        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005),
 311        /* vector, manufacturer? */
 312        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081),
 313        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084),
 314        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085),
 315        /* EDIC */
 316        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102),
 317        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105),
 318        PCMCIA_DEVICE_NULL,
 319};
 320
 321MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
 322
 323static struct pcmcia_driver softingcs_driver = {
 324        .owner          = THIS_MODULE,
 325        .name           = "softingcs",
 326        .id_table       = softingcs_ids,
 327        .probe          = softingcs_probe,
 328        .remove         = softingcs_remove,
 329};
 330
 331module_pcmcia_driver(softingcs_driver);
 332
 333MODULE_DESCRIPTION("softing CANcard driver"
 334                ", links PCMCIA card to softing driver");
 335MODULE_LICENSE("GPL v2");
 336