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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, 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");
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