drivers/net/can/softing/softing_cs.c

   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, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/slab.h>
  23
  24 #include <pcmcia/cistpl.h>
  25 #include <pcmcia/ds.h>
  26
  27 #include "softing_platform.h"
  28
  29 static int softingcs_index;
  30 static spinlock_t softingcs_index_lock;
  31
  32 static int softingcs_reset(struct platform_device *pdev, int v);
  33 static int softingcs_enable_irq(struct platform_device *pdev, int v);
  34
  35 /*
  36  * platform_data descriptions
  37  */
  38 #define MHZ (1000*1000)
  39 static const struct softing_platform_data softingcs_platform_data[] = {
  40 {
  41         .name = "CANcard",
  42         .manf = 0x0168, .prod = 0x001,
  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-NEC",
  54         .manf = 0x0168, .prod = 0x002,
  55         .generation = 1,
  56         .nbus = 2,
  57         .freq = 16 * 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 "cancard.bin",},
  62         .reset = softingcs_reset,
  63         .enable_irq = softingcs_enable_irq,
  64 }, {
  65         .name = "CANcard-SJA",
  66         .manf = 0x0168, .prod = 0x004,
  67         .generation = 1,
  68         .nbus = 2,
  69         .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
  70         .dpram_size = 0x0800,
  71         .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
  72         .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
  73         .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
  74         .reset = softingcs_reset,
  75         .enable_irq = softingcs_enable_irq,
  76 }, {
  77         .name = "CANcard-2",
  78         .manf = 0x0168, .prod = 0x005,
  79         .generation = 2,
  80         .nbus = 2,
  81         .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
  82         .dpram_size = 0x1000,
  83         .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
  84         .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
  85         .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
  86         .reset = softingcs_reset,
  87         .enable_irq = NULL,
  88 }, {
  89         .name = "Vector-CANcard",
  90         .manf = 0x0168, .prod = 0x081,
  91         .generation = 1,
  92         .nbus = 2,
  93         .freq = 16 * MHZ, .max_brp = 64, .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 "cancard.bin",},
  98         .reset = softingcs_reset,
  99         .enable_irq = softingcs_enable_irq,
 100 }, {
 101         .name = "Vector-CANcard-SJA",
 102         .manf = 0x0168, .prod = 0x084,
 103         .generation = 1,
 104         .nbus = 2,
 105         .freq = 20 * MHZ, .max_brp = 32, .max_sjw = 4,
 106         .dpram_size = 0x0800,
 107         .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
 108         .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
 109         .app = {0x0010, 0x0d0000, fw_dir "cansja.bin",},
 110         .reset = softingcs_reset,
 111         .enable_irq = softingcs_enable_irq,
 112 }, {
 113         .name = "Vector-CANcard-2",
 114         .manf = 0x0168, .prod = 0x085,
 115         .generation = 2,
 116         .nbus = 2,
 117         .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 118         .dpram_size = 0x1000,
 119         .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 120         .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 121         .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 122         .reset = softingcs_reset,
 123         .enable_irq = NULL,
 124 }, {
 125         .name = "EDICcard-NEC",
 126         .manf = 0x0168, .prod = 0x102,
 127         .generation = 1,
 128         .nbus = 2,
 129         .freq = 16 * MHZ, .max_brp = 64, .max_sjw = 4,
 130         .dpram_size = 0x0800,
 131         .boot = {0x0000, 0x000000, fw_dir "bcard.bin",},
 132         .load = {0x0120, 0x00f600, fw_dir "ldcard.bin",},
 133         .app = {0x0010, 0x0d0000, fw_dir "cancard.bin",},
 134         .reset = softingcs_reset,
 135         .enable_irq = softingcs_enable_irq,
 136 }, {
 137         .name = "EDICcard-2",
 138         .manf = 0x0168, .prod = 0x105,
 139         .generation = 2,
 140         .nbus = 2,
 141         .freq = 24 * MHZ, .max_brp = 64, .max_sjw = 4,
 142         .dpram_size = 0x1000,
 143         .boot = {0x0000, 0x000000, fw_dir "bcard2.bin",},
 144         .load = {0x0120, 0x00f600, fw_dir "ldcard2.bin",},
 145         .app = {0x0010, 0x0d0000, fw_dir "cancrd2.bin",},
 146         .reset = softingcs_reset,
 147         .enable_irq = NULL,
 148 }, {
 149         0, 0,
 150 },
 151 };
 152
 153 MODULE_FIRMWARE(fw_dir "bcard.bin");
 154 MODULE_FIRMWARE(fw_dir "ldcard.bin");
 155 MODULE_FIRMWARE(fw_dir "cancard.bin");
 156 MODULE_FIRMWARE(fw_dir "cansja.bin");
 157
 158 MODULE_FIRMWARE(fw_dir "bcard2.bin");
 159 MODULE_FIRMWARE(fw_dir "ldcard2.bin");
 160 MODULE_FIRMWARE(fw_dir "cancrd2.bin");
 161
 162 static __devinit const struct softing_platform_data
 163 *softingcs_find_platform_data(unsigned int manf, unsigned int prod)
 164 {
 165         const struct softing_platform_data *lp;
 166
 167         for (lp = softingcs_platform_data; lp->manf; ++lp) {
 168                 if ((lp->manf == manf) && (lp->prod == prod))
 169                         return lp;
 170         }
 171         return NULL;
 172 }
 173
 174 /*
 175  * platformdata callbacks
 176  */
 177 static int softingcs_reset(struct platform_device *pdev, int v)
 178 {
 179         struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 180
 181         dev_dbg(&pdev->dev, "pcmcia config [2] %02x\n", v ? 0 : 0x20);
 182         return pcmcia_write_config_byte(pcmcia, 2, v ? 0 : 0x20);
 183 }
 184
 185 static int softingcs_enable_irq(struct platform_device *pdev, int v)
 186 {
 187         struct pcmcia_device *pcmcia = to_pcmcia_dev(pdev->dev.parent);
 188
 189         dev_dbg(&pdev->dev, "pcmcia config [0] %02x\n", v ? 0x60 : 0);
 190         return pcmcia_write_config_byte(pcmcia, 0, v ? 0x60 : 0);
 191 }
 192
 193 /*
 194  * pcmcia check
 195  */
 196 static __devinit int softingcs_probe_config(struct pcmcia_device *pcmcia,
 197                 void *priv_data)
 198 {
 199         struct softing_platform_data *pdat = priv_data;
 200         struct resource *pres;
 201         int memspeed = 0;
 202
 203         WARN_ON(!pdat);
 204         pres = pcmcia->resource[PCMCIA_IOMEM_0];
 205         if (resource_size(pres) < 0x1000)
 206                 return -ERANGE;
 207
 208         pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 209         if (pdat->generation < 2) {
 210                 pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8;
 211                 memspeed = 3;
 212         } else {
 213                 pres->flags |= WIN_DATA_WIDTH_16;
 214         }
 215         return pcmcia_request_window(pcmcia, pres, memspeed);
 216 }
 217
 218 static __devexit void softingcs_remove(struct pcmcia_device *pcmcia)
 219 {
 220         struct platform_device *pdev = pcmcia->priv;
 221
 222         /* free bits */
 223         platform_device_unregister(pdev);
 224         /* release pcmcia stuff */
 225         pcmcia_disable_device(pcmcia);
 226 }
 227
 228 /*
 229  * platform_device wrapper
 230  * pdev->resource has 2 entries: io & irq
 231  */
 232 static void softingcs_pdev_release(struct device *dev)
 233 {
 234         struct platform_device *pdev = to_platform_device(dev);
 235         kfree(pdev);
 236 }
 237
 238 static __devinit int softingcs_probe(struct pcmcia_device *pcmcia)
 239 {
 240         int ret;
 241         struct platform_device *pdev;
 242         const struct softing_platform_data *pdat;
 243         struct resource *pres;
 244         struct dev {
 245                 struct platform_device pdev;
 246                 struct resource res[2];
 247         } *dev;
 248
 249         /* find matching platform_data */
 250         pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id);
 251         if (!pdat)
 252                 return -ENOTTY;
 253
 254         /* setup pcmcia device */
 255         pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM |
 256                 CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
 257         ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat);
 258         if (ret)
 259                 goto pcmcia_failed;
 260
 261         ret = pcmcia_enable_device(pcmcia);
 262         if (ret < 0)
 263                 goto pcmcia_failed;
 264
 265         pres = pcmcia->resource[PCMCIA_IOMEM_0];
 266         if (!pres) {
 267                 ret = -EBADF;
 268                 goto pcmcia_bad;
 269         }
 270
 271         /* create softing platform device */
 272         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 273         if (!dev) {
 274                 ret = -ENOMEM;
 275                 goto mem_failed;
 276         }
 277         dev->pdev.resource = dev->res;
 278         dev->pdev.num_resources = ARRAY_SIZE(dev->res);
 279         dev->pdev.dev.release = softingcs_pdev_release;
 280
 281         pdev = &dev->pdev;
 282         pdev->dev.platform_data = (void *)pdat;
 283         pdev->dev.parent = &pcmcia->dev;
 284         pcmcia->priv = pdev;
 285
 286         /* platform device resources */
 287         pdev->resource[0].flags = IORESOURCE_MEM;
 288         pdev->resource[0].start = pres->start;
 289         pdev->resource[0].end = pres->end;
 290
 291         pdev->resource[1].flags = IORESOURCE_IRQ;
 292         pdev->resource[1].start = pcmcia->irq;
 293         pdev->resource[1].end = pdev->resource[1].start;
 294
 295         /* platform device setup */
 296         spin_lock(&softingcs_index_lock);
 297         pdev->id = softingcs_index++;
 298         spin_unlock(&softingcs_index_lock);
 299         pdev->name = "softing";
 300         dev_set_name(&pdev->dev, "softingcs.%i", pdev->id);
 301         ret = platform_device_register(pdev);
 302         if (ret < 0)
 303                 goto platform_failed;
 304
 305         dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev));
 306         return 0;
 307
 308 platform_failed:
 309         kfree(dev);
 310 mem_failed:
 311 pcmcia_bad:
 312 pcmcia_failed:
 313         pcmcia_disable_device(pcmcia);
 314         pcmcia->priv = NULL;
 315         return ret ?: -ENODEV;
 316 }
 317
 318 static const struct pcmcia_device_id softingcs_ids[] = {
 319         /* softing */
 320         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
 321         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),
 322         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004),
 323         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005),
 324         /* vector, manufacturer? */
 325         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081),
 326         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084),
 327         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085),
 328         /* EDIC */
 329         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102),
 330         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105),
 331         PCMCIA_DEVICE_NULL,
 332 };
 333
 334 MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
 335
 336 static struct pcmcia_driver softingcs_driver = {
 337         .owner          = THIS_MODULE,
 338         .name           = "softingcs",
 339         .id_table       = softingcs_ids,
 340         .probe          = softingcs_probe,
 341         .remove         = __devexit_p(softingcs_remove),
 342 };
 343
 344 static int __init softingcs_start(void)
 345 {
 346         spin_lock_init(&softingcs_index_lock);
 347         return pcmcia_register_driver(&softingcs_driver);
 348 }
 349
 350 static void __exit softingcs_stop(void)
 351 {
 352         pcmcia_unregister_driver(&softingcs_driver);
 353 }
 354
 355 module_init(softingcs_start);
 356 module_exit(softingcs_stop);
 357
 358 MODULE_DESCRIPTION("softing CANcard driver"
 359                 ", links PCMCIA card to softing driver");
 360 MODULE_LICENSE("GPL v2");