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authorDavid Brownell <david-b@pacbell.net>2005-05-26 08:55:55 -0400
committerGreg KH <gregkh@suse.de>2005-05-31 17:13:58 -0400
commitc6de2b64eb575a3f9326969ec5fcdc6032b38e42 (patch)
treec943830789f5039933d1583415ee58156a19c413 /drivers
parent1e9a47b62f7daf5a94fdd74a94dd4e076f44909a (diff)
[PATCH] USB: add sl811_cs support
This adds support for a CF-card USB Host adapter, the Ratoc REX-CFU1U, by wrapping a PCMCIA driver around the existing "sl811-hcd" platform driver. This CF card is especially useful for PDAs, which currently tend to have no other solution for USB host capability. From: Botond Botyanszki <boti@rocketmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/host/Kconfig11
-rw-r--r--drivers/usb/host/Makefile1
-rw-r--r--drivers/usb/host/sl811_cs.c442
3 files changed, 454 insertions, 0 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 3196c3265ff5..19e598c9641f 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -124,3 +124,14 @@ config USB_SL811_HCD
124 To compile this driver as a module, choose M here: the 124 To compile this driver as a module, choose M here: the
125 module will be called sl811-hcd. 125 module will be called sl811-hcd.
126 126
127config USB_SL811_CS
128 tristate "CF/PCMCIA support for SL811HS HCD"
129 depends on USB_SL811_HCD && PCMCIA
130 default N
131 help
132 Wraps a PCMCIA driver around the SL811HS HCD, supporting the RATOC
133 REX-CFU1U CF card (often used with PDAs). If unsure, say N.
134
135 To compile this driver as a module, choose M here: the
136 module will be called "sl811_cs".
137
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index a574ca06cf6b..5dbd3e7a27c7 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -7,4 +7,5 @@ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
7obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o 7obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
8obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o 8obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
9obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o 9obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
10obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
10obj-$(CONFIG_ETRAX_ARCH_V10) += hc_crisv10.o 11obj-$(CONFIG_ETRAX_ARCH_V10) += hc_crisv10.o
diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c
new file mode 100644
index 000000000000..6e173265095c
--- /dev/null
+++ b/drivers/usb/host/sl811_cs.c
@@ -0,0 +1,442 @@
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>
22
23#include <pcmcia/version.h>
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
71static int irq_list[4] = { -1 };
72static int irq_list_count;
73
74module_param_array(irq_list, int, &irq_list_count, 0444);
75
76INT_MODULE_PARM(irq_mask, 0xdeb8);
77
78typedef struct local_info_t {
79 dev_link_t link;
80 dev_node_t node;
81} local_info_t;
82
83/*====================================================================*/
84
85static void release_platform_dev(struct device * dev)
86{
87 DBG(0, "sl811_cs platform_dev release\n");
88 dev->parent = NULL;
89}
90
91static struct sl811_platform_data platform_data = {
92 .potpg = 100,
93 .power = 50, /* == 100mA */
94 // .reset = ... FIXME: invoke CF reset on the card
95};
96
97static struct resource resources[] = {
98 [0] = {
99 .flags = IORESOURCE_IRQ,
100 },
101 [1] = {
102 // .name = "address",
103 .flags = IORESOURCE_IO,
104 },
105 [2] = {
106 // .name = "data",
107 .flags = IORESOURCE_IO,
108 },
109};
110
111extern struct device_driver sl811h_driver;
112
113static struct platform_device platform_dev = {
114 .id = -1,
115 .dev = {
116 .platform_data = &platform_data,
117 .release = release_platform_dev,
118 },
119 .resource = resources,
120 .num_resources = ARRAY_SIZE(resources),
121};
122
123static int sl811_hc_init(struct device *parent, ioaddr_t base_addr, int irq)
124{
125 if (platform_dev.dev.parent)
126 return -EBUSY;
127 platform_dev.dev.parent = parent;
128
129 /* finish seting up the platform device */
130 resources[0].start = irq;
131
132 resources[1].start = base_addr;
133 resources[1].end = base_addr;
134
135 resources[2].start = base_addr + 1;
136 resources[2].end = base_addr + 1;
137
138 /* The driver core will probe for us. We know sl811-hcd has been
139 * initialized already because of the link order dependency.
140 */
141 platform_dev.name = sl811h_driver.name;
142 return platform_device_register(&platform_dev);
143}
144
145/*====================================================================*/
146
147static void sl811_cs_detach(dev_link_t *link)
148{
149 dev_link_t **linkp;
150
151 DBG(0, "sl811_cs_detach(0x%p)\n", link);
152
153 /* Locate device structure */
154 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next) {
155 if (*linkp == link)
156 break;
157 }
158 if (*linkp == NULL)
159 return;
160
161 /* Break the link with Card Services */
162 if (link->handle)
163 pcmcia_deregister_client(link->handle);
164
165 /* Unlink device structure, and free it */
166 *linkp = link->next;
167 /* This points to the parent local_info_t struct */
168 kfree(link->priv);
169}
170
171static void sl811_cs_release(dev_link_t * link)
172{
173
174 DBG(0, "sl811_cs_release(0x%p)\n", link);
175
176 if (link->open) {
177 DBG(1, "sl811_cs: release postponed, '%s' still open\n",
178 link->dev->dev_name);
179 link->state |= DEV_STALE_CONFIG;
180 return;
181 }
182
183 /* Unlink the device chain */
184 link->dev = NULL;
185
186 platform_device_unregister(&platform_dev);
187 pcmcia_release_configuration(link->handle);
188 if (link->io.NumPorts1)
189 pcmcia_release_io(link->handle, &link->io);
190 if (link->irq.AssignedIRQ)
191 pcmcia_release_irq(link->handle, &link->irq);
192 link->state &= ~DEV_CONFIG;
193
194 if (link->state & DEV_STALE_LINK)
195 sl811_cs_detach(link);
196}
197
198static void sl811_cs_config(dev_link_t *link)
199{
200 client_handle_t handle = link->handle;
201 struct device *parent = &handle_to_dev(handle);
202 local_info_t *dev = link->priv;
203 tuple_t tuple;
204 cisparse_t parse;
205 int last_fn, last_ret;
206 u_char buf[64];
207 config_info_t conf;
208 cistpl_cftable_entry_t dflt = { 0 };
209
210 DBG(0, "sl811_cs_config(0x%p)\n", link);
211
212 tuple.DesiredTuple = CISTPL_CONFIG;
213 tuple.Attributes = 0;
214 tuple.TupleData = buf;
215 tuple.TupleDataMax = sizeof(buf);
216 tuple.TupleOffset = 0;
217 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
218 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
219 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
220 link->conf.ConfigBase = parse.config.base;
221 link->conf.Present = parse.config.rmask[0];
222
223 /* Configure card */
224 link->state |= DEV_CONFIG;
225
226 /* Look up the current Vcc */
227 CS_CHECK(GetConfigurationInfo,
228 pcmcia_get_configuration_info(handle, &conf));
229 link->conf.Vcc = conf.Vcc;
230
231 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
232 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
233 while (1) {
234 cistpl_cftable_entry_t *cfg = &(parse.cftable_entry);
235
236 if (pcmcia_get_tuple_data(handle, &tuple) != 0
237 || pcmcia_parse_tuple(handle, &tuple, &parse)
238 != 0)
239 goto next_entry;
240
241 if (cfg->flags & CISTPL_CFTABLE_DEFAULT) {
242 dflt = *cfg;
243 }
244
245 if (cfg->index == 0)
246 goto next_entry;
247
248 link->conf.ConfigIndex = cfg->index;
249
250 /* Use power settings for Vcc and Vpp if present */
251 /* Note that the CIS values need to be rescaled */
252 if (cfg->vcc.present & (1<<CISTPL_POWER_VNOM)) {
253 if (cfg->vcc.param[CISTPL_POWER_VNOM]/10000
254 != conf.Vcc)
255 goto next_entry;
256 } else if (dflt.vcc.present & (1<<CISTPL_POWER_VNOM)) {
257 if (dflt.vcc.param[CISTPL_POWER_VNOM]/10000
258 != conf.Vcc)
259 goto next_entry;
260 }
261
262 if (cfg->vpp1.present & (1<<CISTPL_POWER_VNOM))
263 link->conf.Vpp1 = link->conf.Vpp2 =
264 cfg->vpp1.param[CISTPL_POWER_VNOM]/10000;
265 else if (dflt.vpp1.present & (1<<CISTPL_POWER_VNOM))
266 link->conf.Vpp1 = link->conf.Vpp2 =
267 dflt.vpp1.param[CISTPL_POWER_VNOM]/10000;
268
269 /* we need an interrupt */
270 if (cfg->irq.IRQInfo1 || dflt.irq.IRQInfo1)
271 link->conf.Attributes |= CONF_ENABLE_IRQ;
272
273 /* IO window settings */
274 link->io.NumPorts1 = link->io.NumPorts2 = 0;
275 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
276 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
277
278 link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
279 link->io.IOAddrLines = io->flags & CISTPL_IO_LINES_MASK;
280 link->io.BasePort1 = io->win[0].base;
281 link->io.NumPorts1 = io->win[0].len;
282
283 if (pcmcia_request_io(link->handle, &link->io) != 0)
284 goto next_entry;
285 }
286 break;
287
288next_entry:
289 if (link->io.NumPorts1)
290 pcmcia_release_io(link->handle, &link->io);
291 last_ret = pcmcia_get_next_tuple(handle, &tuple);
292 }
293
294 /* require an IRQ and two registers */
295 if (!link->io.NumPorts1 || link->io.NumPorts1 < 2)
296 goto cs_failed;
297 if (link->conf.Attributes & CONF_ENABLE_IRQ)
298 CS_CHECK(RequestIRQ,
299 pcmcia_request_irq(link->handle, &link->irq));
300 else
301 goto cs_failed;
302
303 CS_CHECK(RequestConfiguration,
304 pcmcia_request_configuration(link->handle, &link->conf));
305
306 sprintf(dev->node.dev_name, driver_name);
307 dev->node.major = dev->node.minor = 0;
308 link->dev = &dev->node;
309
310 printk(KERN_INFO "%s: index 0x%02x: Vcc %d.%d",
311 dev->node.dev_name, link->conf.ConfigIndex,
312 link->conf.Vcc/10, link->conf.Vcc%10);
313 if (link->conf.Vpp1)
314 printk(", Vpp %d.%d", link->conf.Vpp1/10, link->conf.Vpp1%10);
315 printk(", irq %d", link->irq.AssignedIRQ);
316 printk(", io 0x%04x-0x%04x", link->io.BasePort1,
317 link->io.BasePort1+link->io.NumPorts1-1);
318 printk("\n");
319
320 link->state &= ~DEV_CONFIG_PENDING;
321
322 if (sl811_hc_init(parent, link->io.BasePort1, link->irq.AssignedIRQ)
323 < 0) {
324cs_failed:
325 printk("sl811_cs_config failed\n");
326 cs_error(link->handle, last_fn, last_ret);
327 sl811_cs_release(link);
328 link->state &= ~DEV_CONFIG_PENDING;
329 }
330}
331
332static int
333sl811_cs_event(event_t event, int priority, event_callback_args_t *args)
334{
335 dev_link_t *link = args->client_data;
336
337 DBG(1, "sl811_cs_event(0x%06x)\n", event);
338
339 switch (event) {
340 case CS_EVENT_CARD_REMOVAL:
341 link->state &= ~DEV_PRESENT;
342 if (link->state & DEV_CONFIG)
343 sl811_cs_release(link);
344 break;
345
346 case CS_EVENT_CARD_INSERTION:
347 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
348 sl811_cs_config(link);
349 break;
350
351 case CS_EVENT_PM_SUSPEND:
352 link->state |= DEV_SUSPEND;
353 /* Fall through... */
354 case CS_EVENT_RESET_PHYSICAL:
355 if (link->state & DEV_CONFIG)
356 pcmcia_release_configuration(link->handle);
357 break;
358
359 case CS_EVENT_PM_RESUME:
360 link->state &= ~DEV_SUSPEND;
361 /* Fall through... */
362 case CS_EVENT_CARD_RESET:
363 if (link->state & DEV_CONFIG)
364 pcmcia_request_configuration(link->handle, &link->conf);
365 DBG(0, "reset sl811-hcd here?\n");
366 break;
367 }
368 return 0;
369}
370
371static dev_link_t *sl811_cs_attach(void)
372{
373 local_info_t *local;
374 dev_link_t *link;
375 client_reg_t client_reg;
376 int ret, i;
377
378 local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
379 if (!local)
380 return NULL;
381 memset(local, 0, sizeof(local_info_t));
382 link = &local->link;
383 link->priv = local;
384
385 /* Initialize */
386 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE;
387 link->irq.IRQInfo1 = IRQ_INFO2_VALID|IRQ_LEVEL_ID;
388 if (irq_list[0] == -1)
389 link->irq.IRQInfo2 = irq_mask;
390 else
391 for (i = 0; i < irq_list_count; i++)
392 link->irq.IRQInfo2 |= 1 << irq_list[i];
393 link->irq.Handler = NULL;
394
395 link->conf.Attributes = 0;
396 link->conf.Vcc = 33;
397 link->conf.IntType = INT_MEMORY_AND_IO;
398
399 /* Register with Card Services */
400 link->next = dev_list;
401 dev_list = link;
402 client_reg.dev_info = (dev_info_t *) &driver_name;
403 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
404 client_reg.EventMask =
405 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
406 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
407 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
408 client_reg.event_handler = &sl811_cs_event;
409 client_reg.Version = 0x0210;
410 client_reg.event_callback_args.client_data = link;
411 ret = pcmcia_register_client(&link->handle, &client_reg);
412 if (ret != CS_SUCCESS) {
413 cs_error(link->handle, RegisterClient, ret);
414 sl811_cs_detach(link);
415 return NULL;
416 }
417
418 return link;
419}
420
421static struct pcmcia_driver sl811_cs_driver = {
422 .owner = THIS_MODULE,
423 .drv = {
424 .name = (char *)driver_name,
425 },
426 .attach = sl811_cs_attach,
427 .detach = sl811_cs_detach,
428};
429
430/*====================================================================*/
431
432static int __init init_sl811_cs(void)
433{
434 return pcmcia_register_driver(&sl811_cs_driver);
435}
436module_init(init_sl811_cs);
437
438static void __exit exit_sl811_cs(void)
439{
440 pcmcia_unregister_driver(&sl811_cs_driver);
441}
442module_exit(exit_sl811_cs);