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 DEFINE_SPINLOCK(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 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 int softingcs_probe_config(struct pcmcia_device *pcmcia, void *priv_data)
 197 {
 198         struct softing_platform_data *pdat = priv_data;
 199         struct resource *pres;
 200         int memspeed = 0;
 201
 202         WARN_ON(!pdat);
 203         pres = pcmcia->resource[PCMCIA_IOMEM_0];
 204         if (resource_size(pres) < 0x1000)
 205                 return -ERANGE;
 206
 207         pres->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
 208         if (pdat->generation < 2) {
 209                 pres->flags |= WIN_USE_WAIT | WIN_DATA_WIDTH_8;
 210                 memspeed = 3;
 211         } else {
 212                 pres->flags |= WIN_DATA_WIDTH_16;
 213         }
 214         return pcmcia_request_window(pcmcia, pres, memspeed);
 215 }
 216
 217 static void softingcs_remove(struct pcmcia_device *pcmcia)
 218 {
 219         struct platform_device *pdev = pcmcia->priv;
 220
 221         /* free bits */
 222         platform_device_unregister(pdev);
 223         /* release pcmcia stuff */
 224         pcmcia_disable_device(pcmcia);
 225 }
 226
 227 /*
 228  * platform_device wrapper
 229  * pdev->resource has 2 entries: io & irq
 230  */
 231 static void softingcs_pdev_release(struct device *dev)
 232 {
 233         struct platform_device *pdev = to_platform_device(dev);
 234         kfree(pdev);
 235 }
 236
 237 static int softingcs_probe(struct pcmcia_device *pcmcia)
 238 {
 239         int ret;
 240         struct platform_device *pdev;
 241         const struct softing_platform_data *pdat;
 242         struct resource *pres;
 243         struct dev {
 244                 struct platform_device pdev;
 245                 struct resource res[2];
 246         } *dev;
 247
 248         /* find matching platform_data */
 249         pdat = softingcs_find_platform_data(pcmcia->manf_id, pcmcia->card_id);
 250         if (!pdat)
 251                 return -ENOTTY;
 252
 253         /* setup pcmcia device */
 254         pcmcia->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IOMEM |
 255                 CONF_AUTO_SET_VPP | CONF_AUTO_CHECK_VCC;
 256         ret = pcmcia_loop_config(pcmcia, softingcs_probe_config, (void *)pdat);
 257         if (ret)
 258                 goto pcmcia_failed;
 259
 260         ret = pcmcia_enable_device(pcmcia);
 261         if (ret < 0)
 262                 goto pcmcia_failed;
 263
 264         pres = pcmcia->resource[PCMCIA_IOMEM_0];
 265         if (!pres) {
 266                 ret = -EBADF;
 267                 goto pcmcia_bad;
 268         }
 269
 270         /* create softing platform device */
 271         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 272         if (!dev) {
 273                 ret = -ENOMEM;
 274                 goto mem_failed;
 275         }
 276         dev->pdev.resource = dev->res;
 277         dev->pdev.num_resources = ARRAY_SIZE(dev->res);
 278         dev->pdev.dev.release = softingcs_pdev_release;
 279
 280         pdev = &dev->pdev;
 281         pdev->dev.platform_data = (void *)pdat;
 282         pdev->dev.parent = &pcmcia->dev;
 283         pcmcia->priv = pdev;
 284
 285         /* platform device resources */
 286         pdev->resource[0].flags = IORESOURCE_MEM;
 287         pdev->resource[0].start = pres->start;
 288         pdev->resource[0].end = pres->end;
 289
 290         pdev->resource[1].flags = IORESOURCE_IRQ;
 291         pdev->resource[1].start = pcmcia->irq;
 292         pdev->resource[1].end = pdev->resource[1].start;
 293
 294         /* platform device setup */
 295         spin_lock(&softingcs_index_lock);
 296         pdev->id = softingcs_index++;
 297         spin_unlock(&softingcs_index_lock);
 298         pdev->name = "softing";
 299         dev_set_name(&pdev->dev, "softingcs.%i", pdev->id);
 300         ret = platform_device_register(pdev);
 301         if (ret < 0)
 302                 goto platform_failed;
 303
 304         dev_info(&pcmcia->dev, "created %s\n", dev_name(&pdev->dev));
 305         return 0;
 306
 307 platform_failed:
 308         kfree(dev);
 309 mem_failed:
 310 pcmcia_bad:
 311 pcmcia_failed:
 312         pcmcia_disable_device(pcmcia);
 313         pcmcia->priv = NULL;
 314         return ret ?: -ENODEV;
 315 }
 316
 317 static const struct pcmcia_device_id softingcs_ids[] = {
 318         /* softing */
 319         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0001),
 320         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0002),
 321         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0004),
 322         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0005),
 323         /* vector, manufacturer? */
 324         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0081),
 325         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0084),
 326         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0085),
 327         /* EDIC */
 328         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0102),
 329         PCMCIA_DEVICE_MANF_CARD(0x0168, 0x0105),
 330         PCMCIA_DEVICE_NULL,
 331 };
 332
 333 MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
 334
 335 static struct pcmcia_driver softingcs_driver = {
 336         .owner          = THIS_MODULE,
 337         .name           = "softingcs",
 338         .id_table       = softingcs_ids,
 339         .probe          = softingcs_probe,
 340         .remove         = softingcs_remove,
 341 };
 342
 343 module_pcmcia_driver(&softingcs_driver);
 344
 345 MODULE_DESCRIPTION("softing CANcard driver"
 346                 ", links PCMCIA card to softing driver");
 347 MODULE_LICENSE("GPL v2");