Create platform_device.h to contain all the platform device details.
[deliverable/linux.git] / drivers / usb / host / sl811_cs.c
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1/*
2 * PCMCIA driver for SL811HS (as found in REX-CFU1U)
3 * Filename: sl811_cs.c
4 * Author: Yukio Yamamoto
5 *
6 * Port to sl811-hcd and 2.6.x by
7 * Botond Botyanszki <boti@rocketmail.com>
8 * Simon Pickering
9 *
10 * Last update: 2005-05-12
11 */
12
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/init.h>
16#include <linux/sched.h>
17#include <linux/ptrace.h>
18#include <linux/slab.h>
19#include <linux/string.h>
20#include <linux/timer.h>
21#include <linux/ioport.h>
d052d1be 22#include <linux/platform_device.h>
c6de2b64 23
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24#include <pcmcia/cs_types.h>
25#include <pcmcia/cs.h>
26#include <pcmcia/cistpl.h>
27#include <pcmcia/cisreg.h>
28#include <pcmcia/ds.h>
29
30#include <linux/usb_sl811.h>
31
32MODULE_AUTHOR("Botond Botyanszki");
33MODULE_DESCRIPTION("REX-CFU1U PCMCIA driver for 2.6");
34MODULE_LICENSE("GPL");
35
36
37/*====================================================================*/
38/* MACROS */
39/*====================================================================*/
40
41#if defined(DEBUG) || defined(CONFIG_USB_DEBUG) || defined(PCMCIA_DEBUG)
42
43static int pc_debug = 0;
44module_param(pc_debug, int, 0644);
45
46#define DBG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG "sl811_cs: " args)
47
48#else
49#define DBG(n, args...) do{}while(0)
50#endif /* no debugging */
51
52#define INFO(args...) printk(KERN_INFO "sl811_cs: " args)
53
54#define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
55
56#define CS_CHECK(fn, ret) \
57 do { \
58 last_fn = (fn); \
59 if ((last_ret = (ret)) != 0) \
60 goto cs_failed; \
61 } while (0)
62
63/*====================================================================*/
64/* VARIABLES */
65/*====================================================================*/
66
67static const char driver_name[DEV_NAME_LEN] = "sl811_cs";
68
69static dev_link_t *dev_list = NULL;
70
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71typedef struct local_info_t {
72 dev_link_t link;
73 dev_node_t node;
74} local_info_t;
75
76/*====================================================================*/
77
78static void release_platform_dev(struct device * dev)
79{
80 DBG(0, "sl811_cs platform_dev release\n");
81 dev->parent = NULL;
82}
83
84static struct sl811_platform_data platform_data = {
85 .potpg = 100,
86 .power = 50, /* == 100mA */
87 // .reset = ... FIXME: invoke CF reset on the card
88};
89
90static struct resource resources[] = {
91 [0] = {
92 .flags = IORESOURCE_IRQ,
93 },
94 [1] = {
95 // .name = "address",
96 .flags = IORESOURCE_IO,
97 },
98 [2] = {
99 // .name = "data",
100 .flags = IORESOURCE_IO,
101 },
102};
103
104extern struct device_driver sl811h_driver;
105
106static struct platform_device platform_dev = {
107 .id = -1,
108 .dev = {
109 .platform_data = &platform_data,
110 .release = release_platform_dev,
111 },
112 .resource = resources,
113 .num_resources = ARRAY_SIZE(resources),
114};
115
116static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
117{
118 if (platform_dev.dev.parent)
119 return -EBUSY;
120 platform_dev.dev.parent = parent;
121
122 /* finish seting up the platform device */
123 resources[0].start = irq;
124
125 resources[1].start = base_addr;
126 resources[1].end = base_addr;
127
128 resources[2].start = base_addr + 1;
129 resources[2].end = base_addr + 1;
130
131 /* The driver core will probe for us. We know sl811-hcd has been
132 * initialized already because of the link order dependency.
133 */
134 platform_dev.name = sl811h_driver.name;
135 return platform_device_register(&platform_dev);
136}
137
138/*====================================================================*/
139
140static void sl811_cs_detach(dev_link_t *link)
141{
142 dev_link_t **linkp;
143
144 DBG(0, "sl811_cs_detach(0x%p)\n", link);
145
146 /* Locate device structure */
147 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) {
148 if (*linkp == link)
149 break;
150 }
151 if (*linkp == NULL)
152 return;
153
154 /* Break the link with Card Services */
155 if (link->handle)
156 pcmcia_deregister_client(link->handle);
157
158 /* Unlink device structure, and free it */
159 *linkp = link->next;
160 /* This points to the parent local_info_t struct */
161 kfree(link->priv);
162}
163
164static void sl811_cs_release(dev_link_t * link)
165{
166
167 DBG(0, "sl811_cs_release(0x%p)\n", link);
168
169 if (link->open) {
170 DBG(1, "sl811_cs: release postponed, '%s' still open\n",
171 link->dev->dev_name);
172 link->state |= DEV_STALE_CONFIG;
173 return;
174 }
175
176 /* Unlink the device chain */
177 link->dev = NULL;
178
179 platform_device_unregister(&platform_dev);
180 pcmcia_release_configuration(link->handle);
181 if (link->io.NumPorts1)
182 pcmcia_release_io(link->handle, &link->io);
183 if (link->irq.AssignedIRQ)
184 pcmcia_release_irq(link->handle, &link->irq);
185 link->state &= ~DEV_CONFIG;
186
187 if (link->state & DEV_STALE_LINK)
188 sl811_cs_detach(link);
189}
190
191static void sl811_cs_config(dev_link_t *link)
192{
193 client_handle_t handle = link->handle;
194 struct device *parent = &handle_to_dev(handle);
195 local_info_t *dev = link->priv;
196 tuple_t tuple;
197 cisparse_t parse;
198 int last_fn, last_ret;
199 u_char buf[64];
200 config_info_t conf;
201 cistpl_cftable_entry_t dflt = { 0 };
202
203 DBG(0, "sl811_cs_config(0x%p)\n", link);
204
205 tuple.DesiredTuple = CISTPL_CONFIG;
206 tuple.Attributes = 0;
207 tuple.TupleData = buf;
208 tuple.TupleDataMax = sizeof(buf);
209 tuple.TupleOffset = 0;
210 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
211 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
212 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
213 link->conf.ConfigBase = parse.config.base;
214 link->conf.Present = parse.config.rmask[0];
215
216 /* Configure card */
217 link->state |= DEV_CONFIG;
218
219 /* Look up the current Vcc */
220 CS_CHECK(GetConfigurationInfo,
221 pcmcia_get_configuration_info(handle, &conf));
222 link->conf.Vcc = conf.Vcc;
223
224 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
225 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
226 while (1) {
227 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
228
229 if (pcmcia_get_tuple_data(handle, &tuple) != 0
230 || pcmcia_parse_tuple(handle, &tuple, &parse)
231 != 0)
232 goto next_entry;
233
234 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
235 dflt = *cfg;
236 }
237
238 if (cfg->index == 0)
239 goto next_entry;
240
241 link->conf.ConfigIndex = cfg->index;
242
243 /* Use power settings for Vcc and Vpp if present */
244 /* Note that the CIS values need to be rescaled */
245 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
246 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
247 != conf.Vcc)
248 goto next_entry;
249 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
250 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
251 != conf.Vcc)
252 goto next_entry;
253 }
254
255 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
256 link->conf.Vpp1 = link->conf.Vpp2 =
257 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
258 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
259 link->conf.Vpp1 = link->conf.Vpp2 =
260 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
261
262 /* we need an interrupt */
263 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
264 link->conf.Attributes |= CONF_ENABLE_IRQ;
265
266 /* IO window settings */
267 link->io.NumPorts1 = link->io.NumPorts2 = 0;
268 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
269 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
270
271 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
272 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
273 link->io.BasePort1 = io->win[0].base;
274 link->io.NumPorts1 = io->win[0].len;
275
276 if (pcmcia_request_io(link->handle, &link->io) != 0)
277 goto next_entry;
278 }
279 break;
280
281next_entry:
282 if (link->io.NumPorts1)
283 pcmcia_release_io(link->handle, &link->io);
284 last_ret = pcmcia_get_next_tuple(handle, &tuple);
285 }
286
287 /* require an IRQ and two registers */
288 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
289 goto cs_failed;
290 if (link->conf.Attributes & CONF_ENABLE_IRQ)
291 CS_CHECK(RequestIRQ,
292 pcmcia_request_irq(link->handle, &link->irq));
293 else
294 goto cs_failed;
295
296 CS_CHECK(RequestConfiguration,
297 pcmcia_request_configuration(link->handle, &link->conf));
298
299 sprintf(dev->node.dev_name, driver_name);
300 dev->node.major = dev->node.minor = 0;
301 link->dev = &dev->node;
302
303 printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
304 dev->node.dev_name, link->conf.ConfigIndex,
305 link->conf.Vcc/10, link->conf.Vcc%10);
306 if (link->conf.Vpp1)
307 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
308 printk(", irq %d", link->irq.AssignedIRQ);
309 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
310 link->io.BasePort1+link->io.NumPorts1-1);
311 printk("\n");
312
313 link->state &= ~DEV_CONFIG_PENDING;
314
315 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
316 < 0) {
317cs_failed:
318 printk("sl811_cs_config failed\n");
319 cs_error(link->handle, last_fn, last_ret);
320 sl811_cs_release(link);
321 link->state &= ~DEV_CONFIG_PENDING;
322 }
323}
324
325static int
326sl811_cs_event(event_t event, int priority, event_callback_args_t *args)
327{
328 dev_link_t *link = args->client_data;
329
330 DBG(1, "sl811_cs_event(0x%06x)\n", event);
331
332 switch (event) {
333 case CS_EVENT_CARD_REMOVAL:
334 link->state &= ~DEV_PRESENT;
335 if (link->state & DEV_CONFIG)
336 sl811_cs_release(link);
337 break;
338
339 case CS_EVENT_CARD_INSERTION:
340 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
341 sl811_cs_config(link);
342 break;
343
344 case CS_EVENT_PM_SUSPEND:
345 link->state |= DEV_SUSPEND;
346 /* Fall through... */
347 case CS_EVENT_RESET_PHYSICAL:
348 if (link->state & DEV_CONFIG)
349 pcmcia_release_configuration(link->handle);
350 break;
351
352 case CS_EVENT_PM_RESUME:
353 link->state &= ~DEV_SUSPEND;
354 /* Fall through... */
355 case CS_EVENT_CARD_RESET:
356 if (link->state & DEV_CONFIG)
357 pcmcia_request_configuration(link->handle, &link->conf);
358 DBG(0, "reset sl811-hcd here?\n");
359 break;
360 }
361 return 0;
362}
363
364static dev_link_t *sl811_cs_attach(void)
365{
366 local_info_t *local;
367 dev_link_t *link;
368 client_reg_t client_reg;
22f3a8f5 369 int ret;
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370
371 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
372 if (!local)
373 return NULL;
374 memset(local, 0, sizeof(local_info_t));
375 link = &local->link;
376 link->priv = local;
377
378 /* Initialize */
379 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
380 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
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381 link->irq.Handler = NULL;
382
383 link->conf.Attributes = 0;
384 link->conf.Vcc = 33;
385 link->conf.IntType = INT_MEMORY_AND_IO;
386
387 /* Register with Card Services */
388 link->next = dev_list;
389 dev_list = link;
390 client_reg.dev_info = (dev_info_t *) &driver_name;
391 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
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392 client_reg.Version = 0x0210;
393 client_reg.event_callback_args.client_data = link;
394 ret = pcmcia_register_client(&link->handle, &client_reg);
395 if (ret != CS_SUCCESS) {
396 cs_error(link->handle, RegisterClient, ret);
397 sl811_cs_detach(link);
398 return NULL;
399 }
400
401 return link;
402}
403
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404static struct pcmcia_device_id sl811_ids[] = {
405 PCMCIA_DEVICE_MANF_CARD(0xc015, 0x0001), /* RATOC USB HOST CF+ Card */
406 PCMCIA_DEVICE_NULL,
407};
408MODULE_DEVICE_TABLE(pcmcia, sl811_ids);
409
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410static struct pcmcia_driver sl811_cs_driver = {
411 .owner = THIS_MODULE,
412 .drv = {
413 .name = (char *)driver_name,
414 },
415 .attach = sl811_cs_attach,
1e212f36 416 .event = sl811_cs_event,
c6de2b64 417 .detach = sl811_cs_detach,
22f3a8f5 418 .id_table = sl811_ids,
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419};
420
421/*====================================================================*/
422
423static int __init init_sl811_cs(void)
424{
425 return pcmcia_register_driver(&sl811_cs_driver);
426}
427module_init(init_sl811_cs);
428
429static void __exit exit_sl811_cs(void)
430{
431 pcmcia_unregister_driver(&sl811_cs_driver);
432}
433module_exit(exit_sl811_cs);
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