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 
28 static int softingcs_index;
29 static DEFINE_SPINLOCK(softingcs_index_lock);
30 
31 static int softingcs_reset(struct platform_device *pdev, int v);
32 static int softingcs_enable_irq(struct platform_device *pdev, int v);
33 
34 /*
35  * platform_data descriptions
36  */
37 #define MHZ (1000*1000)
38 static 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 
152 MODULE_FIRMWARE(fw_dir "bcard.bin");
153 MODULE_FIRMWARE(fw_dir "ldcard.bin");
154 MODULE_FIRMWARE(fw_dir "cancard.bin");
155 MODULE_FIRMWARE(fw_dir "cansja.bin");
156 
157 MODULE_FIRMWARE(fw_dir "bcard2.bin");
158 MODULE_FIRMWARE(fw_dir "ldcard2.bin");
159 MODULE_FIRMWARE(fw_dir "cancrd2.bin");
160 
161 static 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  */
176 static 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 
184 static 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  */
195 static 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 
216 static 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  */
230 static void softingcs_pdev_release(struct device *dev)
231 {
232 	struct platform_device *pdev = to_platform_device(dev);
233 	kfree(pdev);
234 }
235 
236 static 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 
306 platform_failed:
307 	kfree(dev);
308 mem_failed:
309 pcmcia_bad:
310 pcmcia_failed:
311 	pcmcia_disable_device(pcmcia);
312 	pcmcia->priv = NULL;
313 	return ret ?: -ENODEV;
314 }
315 
316 static 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 
332 MODULE_DEVICE_TABLE(pcmcia, softingcs_ids);
333 
334 static 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 
342 module_pcmcia_driver(softingcs_driver);
343 
344 MODULE_DESCRIPTION("softing CANcard driver"
345 		", links PCMCIA card to softing driver");
346 MODULE_LICENSE("GPL v2");
347