linux/drivers/net/can/softing/softing_cs.c
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   1/*
   2 * Copyright (C) 2008-2010
   3 *
   4 * - Kurt Van Dijck, EIA Electronics
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the version 2 of the GNU General Public License
   8 * as published by the Free Software Foundation
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19#include <linux/module.h>
  20#include <linux/kernel.h>
  21#include <linux/slab.h>
  22
  23#include <pcmcia/cistpl.h>
  24#include <pcmcia/ds.h>
  25
  26#include "softing_platform.h"
  27
  28static int softingcs_index;
  29static DEFINE_SPINLOCK(softingcs_index_lock);
  30
  31static int softingcs_reset(struct platform_device *pdev, int v);
  32static int softingcs_enable_irq(struct platform_device *pdev, int v);
  33
  34/*
  35 * platform_data descriptions
  36 */
  37#define MHZ (1000*1000)
  38static const struct softing_platform_data softingcs_platform_data[] = {
  39{
  40        .name = "CANcard",
  41        .manf = 0x0168, .prod = 0x001,
  42        .generation = 1,
  43        .nbus = 2,
  44        .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  45        .dpram_size = 0x0800,
  46        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  47        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  48        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  49        .reset = softingcs_reset,
  50        .enable_irq = softingcs_enable_irq,
  51}, {
  52        .name = "CANcard-NEC",
  53        .manf = 0x0168, .prod = 0x002,
  54        .generation = 1,
  55        .nbus = 2,
  56        .freq = 16 * MHZ, .max_brp = 32, .max_sjw = 4,
  57        .dpram_size = 0x0800,
  58        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  59        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  60        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  61        .reset = softingcs_reset,
  62        .enable_irq = softingcs_enable_irq,
  63}, {
  64        .name = "CANcard-SJA",
  65        .manf = 0x0168, .prod = 0x004,
  66        .generation = 1,
  67        .nbus = 2,
  68        .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  69        .dpram_size = 0x0800,
  70        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  71        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  72        .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  73        .reset = softingcs_reset,
  74        .enable_irq = softingcs_enable_irq,
  75}, {
  76        .name = "CANcard-2",
  77        .manf = 0x0168, .prod = 0x005,
  78        .generation = 2,
  79        .nbus = 2,
  80        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  81        .dpram_size = 0x1000,
  82        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  83        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  84        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  85        .reset = softingcs_reset,
  86        .enable_irq = NULL,
  87}, {
  88        .name = "Vector-CANcard",
  89        .manf = 0x0168, .prod = 0x081,
  90        .generation = 1,
  91        .nbus = 2,
  92        .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
  93        .dpram_size = 0x0800,
  94        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  95        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  96        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
  97        .reset = softingcs_reset,
  98        .enable_irq = softingcs_enable_irq,
  99}, {
 100        .name = "Vector-CANcard-SJA",
 101        .manf = 0x0168, .prod = 0x084,
 102        .generation = 1,
 103        .nbus = 2,
 104        .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
 105        .dpram_size = 0x0800,
 106        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
 107        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
 108        .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
 109        .reset = softingcs_reset,
 110        .enable_irq = softingcs_enable_irq,
 111}, {
 112        .name = "Vector-CANcard-2",
 113        .manf = 0x0168, .prod = 0x085,
 114        .generation = 2,
 115        .nbus = 2,
 116        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 117        .dpram_size = 0x1000,
 118        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 119        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 120        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 121        .reset = softingcs_reset,
 122        .enable_irq = NULL,
 123}, {
 124        .name = "EDICcard-NEC",
 125        .manf = 0x0168, .prod = 0x102,
 126        .generation = 1,
 127        .nbus = 2,
 128        .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
 129        .dpram_size = 0x0800,
 130        .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
 131        .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
 132        .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
 133        .reset = softingcs_reset,
 134        .enable_irq = softingcs_enable_irq,
 135}, {
 136        .name = "EDICcard-2",
 137        .manf = 0x0168, .prod = 0x105,
 138        .generation = 2,
 139        .nbus = 2,
 140        .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 141        .dpram_size = 0x1000,
 142        .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 143        .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 144        .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 145        .reset = softingcs_reset,
 146        .enable_irq = NULL,
 147}, {
 148        0, 0,
 149},
 150};
 151
 152MODULE_FIRMWARE(fw_dir "bcard.bin");
 153MODULE_FIRMWARE(fw_dir "ldcard.bin");
 154MODULE_FIRMWARE(fw_dir "cancard.bin");
 155MODULE_FIRMWARE(fw_dir "cansja.bin");
 156
 157MODULE_FIRMWARE(fw_dir "bcard2.bin");
 158MODULE_FIRMWARE(fw_dir "ldcard2.bin");
 159MODULE_FIRMWARE(fw_dir "cancrd2.bin");
 160
 161static const struct softing_platform_data
 162*softingcs_find_platform_data(unsigned int manf, unsigned int prod)
 163{
 164        const struct softing_platform_data *lp;
 165
 166        for (lp = softingcs_platform_data; lp->manf; ++lp) {
 167                if ((lp->manf == manf) && (lp->prod == prod))
 168                        return lp;
 169        }
 170        return NULL;
 171}
 172
 173/*
 174 * platformdata callbacks
 175 */
 176static int softingcs_reset(struct platform_device *pdev, int v)
 177{
 178        struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 179
 180        dev_dbg(&pdev->dev, "pcmcia config [2] %02x\n", v ? 0 : 0x20);
 181        return pcmcia_write_config_byte(pcmcia, 2, v ? 0 : 0x20);
 182}
 183
 184static int softingcs_enable_irq(struct platform_device *pdev, int v)
 185{
 186        struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 187
 188        dev_dbg(&pdev->dev, "pcmcia config [0] %02x\n", v ? 0x60 : 0);
 189        return pcmcia_write_config_byte(pcmcia, 0, v ? 0x60 : 0);
 190}
 191
 192/*
 193 * pcmcia check
 194 */
 195static int softingcs_probe_config(struct pcmcia_device *pcmcia, void *priv_data)
 196{
 197        struct softing_platform_data *pdat = priv_data;
 198        struct resource *pres;
 199        int memspeed = 0;
 200
 201        WARN_ON(!pdat);
 202        pres = pcmcia->resource[PCMCIA_IOMEM_0];
 203        if (resource_size(pres) < 0x1000)
 204                return -ERANGE;
 205
 206        pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 207        if (pdat->generation < 2) {
 208                pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8;
 209                memspeed = 3;
 210        } else {
 211                pres->flags |= WIN_DATA_WIDTH_16;
 212        }
 213        return pcmcia_request_window(pcmcia, pres, memspeed);
 214}
 215
 216static void softingcs_remove(struct pcmcia_device *pcmcia)
 217{
 218        struct platform_device *pdev = pcmcia->priv;
 219
 220        /* free bits */
 221        platform_device_unregister(pdev);
 222        /* release pcmcia stuff */
 223        pcmcia_disable_device(pcmcia);
 224}
 225
 226/*
 227 * platform_device wrapper
 228 * pdev->resource has 2 entries: io & irq
 229 */
 230static void softingcs_pdev_release(struct device *dev)
 231{
 232        struct platform_device *pdev = to_platform_device(dev);
 233        kfree(pdev);
 234}
 235
 236static int softingcs_probe(struct pcmcia_device *pcmcia)
 237{
 238        int ret;
 239        struct platform_device *pdev;
 240        const struct softing_platform_data *pdat;
 241        struct resource *pres;
 242        struct dev {
 243                struct platform_device pdev;
 244                struct resource res[2];
 245        } *dev;
 246
 247        /* find matching platform_data */
 248        pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id);
 249        if (!pdat)
 250                return -ENOTTY;
 251
 252        /* setup pcmcia device */
 253        pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM |
 254                CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
 255        ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat);
 256        if (ret)
 257                goto pcmcia_failed;
 258
 259        ret = pcmcia_enable_device(pcmcia);
 260        if (ret < 0)
 261                goto pcmcia_failed;
 262
 263        pres = pcmcia->resource[PCMCIA_IOMEM_0];
 264        if (!pres) {
 265                ret = -EBADF;
 266                goto pcmcia_bad;
 267        }
 268
 269        /* create softing platform device */
 270        dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 271        if (!dev) {
 272                ret = -ENOMEM;
 273                goto mem_failed;
 274        }
 275        dev->pdev.resource = dev->res;
 276        dev->pdev.num_resources = ARRAY_SIZE(dev->res);
 277        dev->pdev.dev.release = softingcs_pdev_release;
 278
 279        pdev = &dev->pdev;
 280        pdev->dev.platform_data = (void *)pdat;
 281        pdev->dev.parent = &pcmcia->dev;
 282        pcmcia->priv = pdev;
 283
 284        /* platform device resources */
 285        pdev->resource[0].flags = IORESOURCE_MEM;
 286        pdev->resource[0].start = pres->start;
 287        pdev->resource[0].end = pres->end;
 288
 289        pdev->resource[1].flags = IORESOURCE_IRQ;
 290        pdev->resource[1].start = pcmcia->irq;
 291        pdev->resource[1].end = pdev->resource[1].start;
 292
 293        /* platform device setup */
 294        spin_lock(&softingcs_index_lock);
 295        pdev->id = softingcs_index++;
 296        spin_unlock(&softingcs_index_lock);
 297        pdev->name = "softing";
 298        dev_set_name(&pdev->dev, "softingcs.%i", pdev->id);
 299        ret = platform_device_register(pdev);
 300        if (ret < 0)
 301                goto platform_failed;
 302
 303        dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev));
 304        return 0;
 305
 306platform_failed:
 307        kfree(dev);
 308mem_failed:
 309pcmcia_bad:
 310pcmcia_failed:
 311        pcmcia_disable_device(pcmcia);
 312        pcmcia->priv = NULL;
 313        return ret ?: -ENODEV;
 314}
 315
 316static const struct pcmcia_device_id softingcs_ids[] = {
 317        /* softing */
 318        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
 319        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),
 320        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004),
 321        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005),
 322        /* vector, manufacturer? */
 323        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081),
 324        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084),
 325        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085),
 326        /* EDIC */
 327        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102),
 328        PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105),
 329        PCMCIA_DEVICE_NULL,
 330};
 331
 332MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
 333
 334static struct pcmcia_driver softingcs_driver = {
 335        .owner          = THIS_MODULE,
 336        .name           = "softingcs",
 337        .id_table       = softingcs_ids,
 338        .probe          = softingcs_probe,
 339        .remove         = softingcs_remove,
 340};
 341
 342module_pcmcia_driver(softingcs_driver);
 343
 344MODULE_DESCRIPTION("softing CANcard driver"
 345                ", links PCMCIA card to softing driver");
 346MODULE_LICENSE("GPL v2");
 347
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