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
17 static int softingcs_index;
18 static DEFINE_SPINLOCK(softingcs_index_lock);
19
20 static int softingcs_reset(struct platform_device *pdev, int v);
21 static int softingcs_enable_irq(struct platform_device *pdev, int v);
22
23 /*
24 * platform_data descriptions
25 */
26 #define MHZ (1000*1000)
27 static 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
141 MODULE_FIRMWARE(fw_dir "bcard.bin");
142 MODULE_FIRMWARE(fw_dir "ldcard.bin");
143 MODULE_FIRMWARE(fw_dir "cancard.bin");
144 MODULE_FIRMWARE(fw_dir "cansja.bin");
145
146 MODULE_FIRMWARE(fw_dir "bcard2.bin");
147 MODULE_FIRMWARE(fw_dir "ldcard2.bin");
148 MODULE_FIRMWARE(fw_dir "cancrd2.bin");
149
150 static const struct softing_platform_data
softingcs_find_platform_data(unsigned int manf,unsigned int prod)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 */
softingcs_reset(struct platform_device * pdev,int v)165 static 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
softingcs_enable_irq(struct platform_device * pdev,int v)173 static 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 */
softingcs_probe_config(struct pcmcia_device * pcmcia,void * priv_data)184 static 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
softingcs_remove(struct pcmcia_device * pcmcia)205 static 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 */
softingcs_pdev_release(struct device * dev)219 static void softingcs_pdev_release(struct device *dev)
220 {
221 struct platform_device *pdev = to_platform_device(dev);
222 kfree(pdev);
223 }
224
softingcs_probe(struct pcmcia_device * pcmcia)225 static 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
295 platform_failed:
296 platform_device_put(pdev);
297 mem_failed:
298 pcmcia_bad:
299 pcmcia_failed:
300 pcmcia_disable_device(pcmcia);
301 pcmcia->priv = NULL;
302 return ret;
303 }
304
305 static 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
321 MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
322
323 static 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
331 module_pcmcia_driver(softingcs_driver);
332
333 MODULE_DESCRIPTION("softing CANcard driver"
334 ", links PCMCIA card to softing driver");
335 MODULE_LICENSE("GPL v2");
336