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rtc: pcf8523: don't return invalid date when battery is low
[linux-2.6-block.git] / drivers / bluetooth / bluecard_cs.c
CommitLineData
1da177e4
LT		 1/*
2 *
3 * Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)
4 *
5 * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation;
11 *
12 * Software distributed under the License is distributed on an "AS
13 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14 * implied. See the License for the specific language governing
15 * rights and limitations under the License.
16 *
17 * The initial developer of the original code is David A. Hinds
18 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
19 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
20 *
21 */
22
1da177e4
LT		 23#include <linux/module.h>
24
25#include <linux/kernel.h>
26#include <linux/init.h>
27#include <linux/slab.h>
28#include <linux/types.h>
29#include <linux/sched.h>
30#include <linux/delay.h>
31#include <linux/timer.h>
32#include <linux/errno.h>
33#include <linux/ptrace.h>
34#include <linux/ioport.h>
35#include <linux/spinlock.h>
36#include <linux/moduleparam.h>
37#include <linux/wait.h>
38
39#include <linux/skbuff.h>
c89827e0 40#include <linux/io.h>
1da177e4 41
1da177e4
LT		 42#include <pcmcia/cistpl.h>
43#include <pcmcia/ciscode.h>
44#include <pcmcia/ds.h>
45#include <pcmcia/cisreg.h>
46
47#include <net/bluetooth/bluetooth.h>
48#include <net/bluetooth/hci_core.h>
49
50
51
52/* ======================== Module parameters ======================== */
53
54
55MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
56MODULE_DESCRIPTION("Bluetooth driver for the Anycom BlueCard (LSE039/LSE041)");
57MODULE_LICENSE("GPL");
58
59
60
61/* ======================== Local structures ======================== */
62
63
d664cd98 64struct bluecard_info {
fd238232 65 struct pcmcia_device *p_dev;
1da177e4
LT		 66
67 struct hci_dev *hdev;
68
69 spinlock_t lock; /* For serializing operations */
70 struct timer_list timer; /* For LED control */
71
72 struct sk_buff_head txq;
73 unsigned long tx_state;
74
75 unsigned long rx_state;
76 unsigned long rx_count;
77 struct sk_buff *rx_skb;
78
79 unsigned char ctrl_reg;
80 unsigned long hw_state; /* Status of the hardware and LED control */
d664cd98 81};
1da177e4
LT		 82
83
15b99ac1 84static int bluecard_config(struct pcmcia_device *link);
fba395ee 85static void bluecard_release(struct pcmcia_device *link);
1da177e4 86
cc3b4866 87static void bluecard_detach(struct pcmcia_device *p_dev);
1da177e4 88
1da177e4
LT		 89
90/* Default baud rate: 57600, 115200, 230400 or 460800 */
91#define DEFAULT_BAUD_RATE 230400
92
93
94/* Hardware states */
95#define CARD_READY 1
c7ab7330 96#define CARD_ACTIVITY 2
1da177e4
LT		 97#define CARD_HAS_PCCARD_ID 4
98#define CARD_HAS_POWER_LED 5
99#define CARD_HAS_ACTIVITY_LED 6
100
101/* Transmit states */
102#define XMIT_SENDING 1
103#define XMIT_WAKEUP 2
104#define XMIT_BUFFER_NUMBER 5 /* unset = buffer one, set = buffer two */
105#define XMIT_BUF_ONE_READY 6
106#define XMIT_BUF_TWO_READY 7
107#define XMIT_SENDING_READY 8
108
109/* Receiver states */
110#define RECV_WAIT_PACKET_TYPE 0
111#define RECV_WAIT_EVENT_HEADER 1
112#define RECV_WAIT_ACL_HEADER 2
113#define RECV_WAIT_SCO_HEADER 3
114#define RECV_WAIT_DATA 4
115
116/* Special packet types */
117#define PKT_BAUD_RATE_57600 0x80
118#define PKT_BAUD_RATE_115200 0x81
119#define PKT_BAUD_RATE_230400 0x82
120#define PKT_BAUD_RATE_460800 0x83
121
122
123/* These are the register offsets */
124#define REG_COMMAND 0x20
125#define REG_INTERRUPT 0x21
126#define REG_CONTROL 0x22
127#define REG_RX_CONTROL 0x24
128#define REG_CARD_RESET 0x30
129#define REG_LED_CTRL 0x30
130
131/* REG_COMMAND */
132#define REG_COMMAND_TX_BUF_ONE 0x01
133#define REG_COMMAND_TX_BUF_TWO 0x02
134#define REG_COMMAND_RX_BUF_ONE 0x04
135#define REG_COMMAND_RX_BUF_TWO 0x08
136#define REG_COMMAND_RX_WIN_ONE 0x00
137#define REG_COMMAND_RX_WIN_TWO 0x10
138
139/* REG_CONTROL */
140#define REG_CONTROL_BAUD_RATE_57600 0x00
141#define REG_CONTROL_BAUD_RATE_115200 0x01
142#define REG_CONTROL_BAUD_RATE_230400 0x02
143#define REG_CONTROL_BAUD_RATE_460800 0x03
144#define REG_CONTROL_RTS 0x04
145#define REG_CONTROL_BT_ON 0x08
146#define REG_CONTROL_BT_RESET 0x10
147#define REG_CONTROL_BT_RES_PU 0x20
148#define REG_CONTROL_INTERRUPT 0x40
149#define REG_CONTROL_CARD_RESET 0x80
150
151/* REG_RX_CONTROL */
152#define RTS_LEVEL_SHIFT_BITS 0x02
153
154
155
156/* ======================== LED handling routines ======================== */
157
158
04356052 159static void bluecard_activity_led_timeout(struct timer_list *t)
1da177e4 160{
04356052 161 struct bluecard_info *info = from_timer(info, t, timer);
9a017a91 162 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4 163
c7ab7330
OZ		 164 if (test_bit(CARD_ACTIVITY, &(info->hw_state))) {
165 /* leave LED in inactive state for HZ/10 for blink effect */
166 clear_bit(CARD_ACTIVITY, &(info->hw_state));
167 mod_timer(&(info->timer), jiffies + HZ / 10);
1da177e4 168 }
c7ab7330
OZ		 169
170 /* Disable activity LED, enable power LED */
171 outb(0x08 | 0x20, iobase + 0x30);
1da177e4
LT		 172}
173
174
d664cd98 175static void bluecard_enable_activity_led(struct bluecard_info *info)
1da177e4 176{
9a017a91 177 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4 178
c7ab7330
OZ		 179 /* don't disturb running blink timer */
180 if (timer_pending(&(info->timer)))
181 return;
182
183 set_bit(CARD_ACTIVITY, &(info->hw_state));
184
1da177e4 185 if (test_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state))) {
859d2351
OZ		 186 /* Enable activity LED, keep power LED enabled */
187 outb(0x18 | 0x60, iobase + 0x30);
1da177e4 188 } else {
c7ab7330
OZ		 189 /* Disable power LED */
190 outb(0x00, iobase + 0x30);
1da177e4 191 }
c7ab7330
OZ		 192
193 /* Stop the LED after HZ/10 */
194 mod_timer(&(info->timer), jiffies + HZ / 10);
1da177e4
LT		 195}
196
197
198
199/* ======================== Interrupt handling ======================== */
200
201
202static int bluecard_write(unsigned int iobase, unsigned int offset, __u8 *buf, int len)
203{
204 int i, actual;
205
206 actual = (len > 15) ? 15 : len;
207
208 outb_p(actual, iobase + offset);
209
210 for (i = 0; i < actual; i++)
211 outb_p(buf[i], iobase + offset + i + 1);
212
213 return actual;
214}
215
216
d664cd98 217static void bluecard_write_wakeup(struct bluecard_info *info)
1da177e4
LT		 218{
219 if (!info) {
220 BT_ERR("Unknown device");
221 return;
222 }
223
224 if (!test_bit(XMIT_SENDING_READY, &(info->tx_state)))
225 return;
226
227 if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
228 set_bit(XMIT_WAKEUP, &(info->tx_state));
229 return;
230 }
231
232 do {
fc5fef61
GP		 233 unsigned int iobase = info->p_dev->resource[0]->start;
234 unsigned int offset;
235 unsigned char command;
236 unsigned long ready_bit;
1da177e4 237 register struct sk_buff *skb;
fc5fef61 238 int len;
1da177e4
LT		 239
240 clear_bit(XMIT_WAKEUP, &(info->tx_state));
241
e2d40963 242 if (!pcmcia_dev_present(info->p_dev))
1da177e4
LT		 243 return;
244
245 if (test_bit(XMIT_BUFFER_NUMBER, &(info->tx_state))) {
246 if (!test_bit(XMIT_BUF_TWO_READY, &(info->tx_state)))
247 break;
248 offset = 0x10;
249 command = REG_COMMAND_TX_BUF_TWO;
250 ready_bit = XMIT_BUF_TWO_READY;
251 } else {
252 if (!test_bit(XMIT_BUF_ONE_READY, &(info->tx_state)))
253 break;
254 offset = 0x00;
255 command = REG_COMMAND_TX_BUF_ONE;
256 ready_bit = XMIT_BUF_ONE_READY;
257 }
258
a08b15e6
VI		 259 skb = skb_dequeue(&(info->txq));
260 if (!skb)
1da177e4
LT		 261 break;
262
618e8bc2 263 if (hci_skb_pkt_type(skb) & 0x80) {
1da177e4
LT		 264 /* Disable RTS */
265 info->ctrl_reg |= REG_CONTROL_RTS;
266 outb(info->ctrl_reg, iobase + REG_CONTROL);
267 }
268
269 /* Activate LED */
270 bluecard_enable_activity_led(info);
271
272 /* Send frame */
273 len = bluecard_write(iobase, offset, skb->data, skb->len);
274
275 /* Tell the FPGA to send the data */
276 outb_p(command, iobase + REG_COMMAND);
277
278 /* Mark the buffer as dirty */
279 clear_bit(ready_bit, &(info->tx_state));
280
618e8bc2 281 if (hci_skb_pkt_type(skb) & 0x80) {
7259f0d0 282 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
1da177e4
LT		 283 DEFINE_WAIT(wait);
284
285 unsigned char baud_reg;
286
618e8bc2 287 switch (hci_skb_pkt_type(skb)) {
1da177e4
LT		 288 case PKT_BAUD_RATE_460800:
289 baud_reg = REG_CONTROL_BAUD_RATE_460800;
290 break;
291 case PKT_BAUD_RATE_230400:
292 baud_reg = REG_CONTROL_BAUD_RATE_230400;
293 break;
294 case PKT_BAUD_RATE_115200:
295 baud_reg = REG_CONTROL_BAUD_RATE_115200;
296 break;
297 case PKT_BAUD_RATE_57600:
298 /* Fall through... */
299 default:
300 baud_reg = REG_CONTROL_BAUD_RATE_57600;
301 break;
302 }
303
304 /* Wait until the command reaches the baseband */
479f335c 305 mdelay(100);
1da177e4
LT		 306
307 /* Set baud on baseband */
308 info->ctrl_reg &= ~0x03;
309 info->ctrl_reg |= baud_reg;
310 outb(info->ctrl_reg, iobase + REG_CONTROL);
311
312 /* Enable RTS */
313 info->ctrl_reg &= ~REG_CONTROL_RTS;
314 outb(info->ctrl_reg, iobase + REG_CONTROL);
315
316 /* Wait before the next HCI packet can be send */
479f335c 317 mdelay(1000);
1da177e4
LT		 318 }
319
320 if (len == skb->len) {
321 kfree_skb(skb);
322 } else {
323 skb_pull(skb, len);
324 skb_queue_head(&(info->txq), skb);
325 }
326
327 info->hdev->stat.byte_tx += len;
328
329 /* Change buffer */
330 change_bit(XMIT_BUFFER_NUMBER, &(info->tx_state));
331
332 } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
333
334 clear_bit(XMIT_SENDING, &(info->tx_state));
335}
336
337
338static int bluecard_read(unsigned int iobase, unsigned int offset, __u8 *buf, int size)
339{
340 int i, n, len;
341
342 outb(REG_COMMAND_RX_WIN_ONE, iobase + REG_COMMAND);
343
344 len = inb(iobase + offset);
345 n = 0;
346 i = 1;
347
348 while (n < len) {
349
350 if (i == 16) {
351 outb(REG_COMMAND_RX_WIN_TWO, iobase + REG_COMMAND);
352 i = 0;
353 }
354
355 buf[n] = inb(iobase + offset + i);
356
357 n++;
358 i++;
359
360 }
361
362 return len;
363}
364
365
d664cd98
HS		 366static void bluecard_receive(struct bluecard_info *info,
367 unsigned int offset)
1da177e4
LT		 368{
369 unsigned int iobase;
370 unsigned char buf[31];
371 int i, len;
372
373 if (!info) {
374 BT_ERR("Unknown device");
375 return;
376 }
377
9a017a91 378 iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 379
380 if (test_bit(XMIT_SENDING_READY, &(info->tx_state)))
381 bluecard_enable_activity_led(info);
382
383 len = bluecard_read(iobase, offset, buf, sizeof(buf));
384
385 for (i = 0; i < len; i++) {
386
387 /* Allocate packet */
54b5b34e 388 if (!info->rx_skb) {
1da177e4
LT		 389 info->rx_state = RECV_WAIT_PACKET_TYPE;
390 info->rx_count = 0;
a08b15e6
VI		 391 info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
392 if (!info->rx_skb) {
1da177e4
LT		 393 BT_ERR("Can't allocate mem for new packet");
394 return;
395 }
396 }
397
398 if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
399
618e8bc2 400 hci_skb_pkt_type(info->rx_skb) = buf[i];
1da177e4 401
618e8bc2 402 switch (hci_skb_pkt_type(info->rx_skb)) {
1da177e4
LT		 403
404 case 0x00:
405 /* init packet */
406 if (offset != 0x00) {
407 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
408 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
409 set_bit(XMIT_SENDING_READY, &(info->tx_state));
410 bluecard_write_wakeup(info);
411 }
412
413 kfree_skb(info->rx_skb);
414 info->rx_skb = NULL;
415 break;
416
417 case HCI_EVENT_PKT:
418 info->rx_state = RECV_WAIT_EVENT_HEADER;
419 info->rx_count = HCI_EVENT_HDR_SIZE;
420 break;
421
422 case HCI_ACLDATA_PKT:
423 info->rx_state = RECV_WAIT_ACL_HEADER;
424 info->rx_count = HCI_ACL_HDR_SIZE;
425 break;
426
427 case HCI_SCODATA_PKT:
428 info->rx_state = RECV_WAIT_SCO_HEADER;
429 info->rx_count = HCI_SCO_HDR_SIZE;
430 break;
431
432 default:
433 /* unknown packet */
618e8bc2
MH		 434 BT_ERR("Unknown HCI packet with type 0x%02x received",
435 hci_skb_pkt_type(info->rx_skb));
1da177e4
LT		 436 info->hdev->stat.err_rx++;
437
438 kfree_skb(info->rx_skb);
439 info->rx_skb = NULL;
440 break;
441
442 }
443
444 } else {
445
634fef61 446 skb_put_u8(info->rx_skb, buf[i]);
1da177e4
LT		 447 info->rx_count--;
448
449 if (info->rx_count == 0) {
450
451 int dlen;
452 struct hci_event_hdr *eh;
453 struct hci_acl_hdr *ah;
454 struct hci_sco_hdr *sh;
455
456 switch (info->rx_state) {
457
458 case RECV_WAIT_EVENT_HEADER:
2a123b86 459 eh = hci_event_hdr(info->rx_skb);
1da177e4
LT		 460 info->rx_state = RECV_WAIT_DATA;
461 info->rx_count = eh->plen;
462 break;
463
464 case RECV_WAIT_ACL_HEADER:
2a123b86 465 ah = hci_acl_hdr(info->rx_skb);
1da177e4
LT		 466 dlen = __le16_to_cpu(ah->dlen);
467 info->rx_state = RECV_WAIT_DATA;
468 info->rx_count = dlen;
469 break;
470
471 case RECV_WAIT_SCO_HEADER:
2a123b86 472 sh = hci_sco_hdr(info->rx_skb);
1da177e4
LT		 473 info->rx_state = RECV_WAIT_DATA;
474 info->rx_count = sh->dlen;
475 break;
476
477 case RECV_WAIT_DATA:
e1a26170 478 hci_recv_frame(info->hdev, info->rx_skb);
1da177e4
LT		 479 info->rx_skb = NULL;
480 break;
481
482 }
483
484 }
485
486 }
487
488
489 }
490
491 info->hdev->stat.byte_rx += len;
492}
493
494
7d12e780 495static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
1da177e4 496{
d664cd98 497 struct bluecard_info *info = dev_inst;
1da177e4
LT		 498 unsigned int iobase;
499 unsigned char reg;
500
7427847d
MF		 501 if (!info || !info->hdev)
502 /* our irq handler is shared */
503 return IRQ_NONE;
1da177e4
LT		 504
505 if (!test_bit(CARD_READY, &(info->hw_state)))
506 return IRQ_HANDLED;
507
9a017a91 508 iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 509
510 spin_lock(&(info->lock));
511
512 /* Disable interrupt */
513 info->ctrl_reg &= ~REG_CONTROL_INTERRUPT;
514 outb(info->ctrl_reg, iobase + REG_CONTROL);
515
516 reg = inb(iobase + REG_INTERRUPT);
517
518 if ((reg != 0x00) && (reg != 0xff)) {
519
520 if (reg & 0x04) {
521 bluecard_receive(info, 0x00);
522 outb(0x04, iobase + REG_INTERRUPT);
523 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
524 }
525
526 if (reg & 0x08) {
527 bluecard_receive(info, 0x10);
528 outb(0x08, iobase + REG_INTERRUPT);
529 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
530 }
531
532 if (reg & 0x01) {
533 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
534 outb(0x01, iobase + REG_INTERRUPT);
535 bluecard_write_wakeup(info);
536 }
537
538 if (reg & 0x02) {
539 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
540 outb(0x02, iobase + REG_INTERRUPT);
541 bluecard_write_wakeup(info);
542 }
543
544 }
545
546 /* Enable interrupt */
547 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
548 outb(info->ctrl_reg, iobase + REG_CONTROL);
549
550 spin_unlock(&(info->lock));
551
552 return IRQ_HANDLED;
553}
554
555
556
557/* ======================== Device specific HCI commands ======================== */
558
559
560static int bluecard_hci_set_baud_rate(struct hci_dev *hdev, int baud)
561{
d664cd98 562 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 563 struct sk_buff *skb;
564
565 /* Ericsson baud rate command */
566 unsigned char cmd[] = { HCI_COMMAND_PKT, 0x09, 0xfc, 0x01, 0x03 };
567
5f9c6580 568 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_KERNEL);
a08b15e6 569 if (!skb) {
1da177e4
LT		 570 BT_ERR("Can't allocate mem for new packet");
571 return -1;
572 }
573
574 switch (baud) {
575 case 460800:
576 cmd[4] = 0x00;
618e8bc2 577 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_460800;
1da177e4
LT		 578 break;
579 case 230400:
580 cmd[4] = 0x01;
618e8bc2 581 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_230400;
1da177e4
LT		 582 break;
583 case 115200:
584 cmd[4] = 0x02;
618e8bc2 585 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_115200;
1da177e4
LT		 586 break;
587 case 57600:
588 /* Fall through... */
589 default:
590 cmd[4] = 0x03;
618e8bc2 591 hci_skb_pkt_type(skb) = PKT_BAUD_RATE_57600;
1da177e4
LT		 592 break;
593 }
594
59ae1d12 595 skb_put_data(skb, cmd, sizeof(cmd));
1da177e4
LT		 596
597 skb_queue_tail(&(info->txq), skb);
598
599 bluecard_write_wakeup(info);
600
601 return 0;
602}
603
604
605
606/* ======================== HCI interface ======================== */
607
608
609static int bluecard_hci_flush(struct hci_dev *hdev)
610{
d664cd98 611 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4
LT		 612
613 /* Drop TX queue */
614 skb_queue_purge(&(info->txq));
615
616 return 0;
617}
618
619
620static int bluecard_hci_open(struct hci_dev *hdev)
621{
d664cd98 622 struct bluecard_info *info = hci_get_drvdata(hdev);
df44f531 623 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 624
625 if (test_bit(CARD_HAS_PCCARD_ID, &(info->hw_state)))
626 bluecard_hci_set_baud_rate(hdev, DEFAULT_BAUD_RATE);
627
859d2351 628 /* Enable power LED */
df44f531 629 outb(0x08 | 0x20, iobase + 0x30);
1da177e4
LT		 630
631 return 0;
632}
633
634
635static int bluecard_hci_close(struct hci_dev *hdev)
636{
d664cd98 637 struct bluecard_info *info = hci_get_drvdata(hdev);
df44f531 638 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4 639
1da177e4
LT		 640 bluecard_hci_flush(hdev);
641
859d2351
OZ		 642 /* Stop LED timer */
643 del_timer_sync(&(info->timer));
644
645 /* Disable power LED */
df44f531 646 outb(0x00, iobase + 0x30);
1da177e4
LT		 647
648 return 0;
649}
650
651
7bd8f09f 652static int bluecard_hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1da177e4 653{
d664cd98 654 struct bluecard_info *info = hci_get_drvdata(hdev);
1da177e4 655
618e8bc2 656 switch (hci_skb_pkt_type(skb)) {
1da177e4
LT		 657 case HCI_COMMAND_PKT:
658 hdev->stat.cmd_tx++;
659 break;
660 case HCI_ACLDATA_PKT:
661 hdev->stat.acl_tx++;
662 break;
663 case HCI_SCODATA_PKT:
664 hdev->stat.sco_tx++;
665 break;
ce9b0048 666 }
1da177e4
LT		 667
668 /* Prepend skb with frame type */
618e8bc2 669 memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1);
1da177e4
LT		 670 skb_queue_tail(&(info->txq), skb);
671
672 bluecard_write_wakeup(info);
673
674 return 0;
675}
676
677
1da177e4
LT		 678
679/* ======================== Card services HCI interaction ======================== */
680
681
d664cd98 682static int bluecard_open(struct bluecard_info *info)
1da177e4 683{
9a017a91 684 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 685 struct hci_dev *hdev;
686 unsigned char id;
687
688 spin_lock_init(&(info->lock));
689
04356052 690 timer_setup(&info->timer, bluecard_activity_led_timeout, 0);
1da177e4
LT		 691
692 skb_queue_head_init(&(info->txq));
693
694 info->rx_state = RECV_WAIT_PACKET_TYPE;
695 info->rx_count = 0;
696 info->rx_skb = NULL;
697
698 /* Initialize HCI device */
699 hdev = hci_alloc_dev();
700 if (!hdev) {
701 BT_ERR("Can't allocate HCI device");
702 return -ENOMEM;
703 }
704
705 info->hdev = hdev;
706
c13854ce 707 hdev->bus = HCI_PCCARD;
155961e8 708 hci_set_drvdata(hdev, info);
27d35284 709 SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
1da177e4 710
87d82ee2
MH		 711 hdev->open = bluecard_hci_open;
712 hdev->close = bluecard_hci_close;
713 hdev->flush = bluecard_hci_flush;
714 hdev->send = bluecard_hci_send_frame;
1da177e4 715
1da177e4
LT		 716 id = inb(iobase + 0x30);
717
718 if ((id & 0x0f) == 0x02)
719 set_bit(CARD_HAS_PCCARD_ID, &(info->hw_state));
720
721 if (id & 0x10)
722 set_bit(CARD_HAS_POWER_LED, &(info->hw_state));
723
724 if (id & 0x20)
725 set_bit(CARD_HAS_ACTIVITY_LED, &(info->hw_state));
726
727 /* Reset card */
728 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
729 outb(info->ctrl_reg, iobase + REG_CONTROL);
730
731 /* Turn FPGA off */
732 outb(0x80, iobase + 0x30);
733
734 /* Wait some time */
735 msleep(10);
736
737 /* Turn FPGA on */
738 outb(0x00, iobase + 0x30);
739
740 /* Activate card */
741 info->ctrl_reg = REG_CONTROL_BT_ON | REG_CONTROL_BT_RES_PU;
742 outb(info->ctrl_reg, iobase + REG_CONTROL);
743
744 /* Enable interrupt */
745 outb(0xff, iobase + REG_INTERRUPT);
746 info->ctrl_reg |= REG_CONTROL_INTERRUPT;
747 outb(info->ctrl_reg, iobase + REG_CONTROL);
748
749 if ((id & 0x0f) == 0x03) {
750 /* Disable RTS */
751 info->ctrl_reg |= REG_CONTROL_RTS;
752 outb(info->ctrl_reg, iobase + REG_CONTROL);
753
754 /* Set baud rate */
755 info->ctrl_reg |= 0x03;
756 outb(info->ctrl_reg, iobase + REG_CONTROL);
757
758 /* Enable RTS */
759 info->ctrl_reg &= ~REG_CONTROL_RTS;
760 outb(info->ctrl_reg, iobase + REG_CONTROL);
761
762 set_bit(XMIT_BUF_ONE_READY, &(info->tx_state));
763 set_bit(XMIT_BUF_TWO_READY, &(info->tx_state));
764 set_bit(XMIT_SENDING_READY, &(info->tx_state));
765 }
766
767 /* Start the RX buffers */
768 outb(REG_COMMAND_RX_BUF_ONE, iobase + REG_COMMAND);
769 outb(REG_COMMAND_RX_BUF_TWO, iobase + REG_COMMAND);
770
771 /* Signal that the hardware is ready */
772 set_bit(CARD_READY, &(info->hw_state));
773
774 /* Drop TX queue */
775 skb_queue_purge(&(info->txq));
776
777 /* Control the point at which RTS is enabled */
778 outb((0x0f << RTS_LEVEL_SHIFT_BITS) | 1, iobase + REG_RX_CONTROL);
779
780 /* Timeout before it is safe to send the first HCI packet */
781 msleep(1250);
782
783 /* Register HCI device */
784 if (hci_register_dev(hdev) < 0) {
785 BT_ERR("Can't register HCI device");
786 info->hdev = NULL;
787 hci_free_dev(hdev);
788 return -ENODEV;
789 }
790
791 return 0;
792}
793
794
d664cd98 795static int bluecard_close(struct bluecard_info *info)
1da177e4 796{
9a017a91 797 unsigned int iobase = info->p_dev->resource[0]->start;
1da177e4
LT		 798 struct hci_dev *hdev = info->hdev;
799
800 if (!hdev)
801 return -ENODEV;
802
803 bluecard_hci_close(hdev);
804
805 clear_bit(CARD_READY, &(info->hw_state));
806
807 /* Reset card */
808 info->ctrl_reg = REG_CONTROL_BT_RESET | REG_CONTROL_CARD_RESET;
809 outb(info->ctrl_reg, iobase + REG_CONTROL);
810
811 /* Turn FPGA off */
812 outb(0x80, iobase + 0x30);
813
13ea4015 814 hci_unregister_dev(hdev);
1da177e4
LT		 815 hci_free_dev(hdev);
816
817 return 0;
818}
819
15b99ac1 820static int bluecard_probe(struct pcmcia_device *link)
1da177e4 821{
d664cd98 822 struct bluecard_info *info;
1da177e4
LT		 823
824 /* Create new info device */
1a31c602 825 info = devm_kzalloc(&link->dev, sizeof(*info), GFP_KERNEL);
1da177e4 826 if (!info)
f8cfa618 827 return -ENOMEM;
1da177e4 828
fba395ee 829 info->p_dev = link;
1da177e4
LT		 830 link->priv = info;
831
1ac71e5a 832 link->config_flags |= CONF_ENABLE_IRQ;
1da177e4 833
15b99ac1 834 return bluecard_config(link);
1da177e4
LT		 835}
836
837
fba395ee 838static void bluecard_detach(struct pcmcia_device *link)
1da177e4 839{
e2d40963 840 bluecard_release(link);
1da177e4
LT		 841}
842
843
15b99ac1 844static int bluecard_config(struct pcmcia_device *link)
1da177e4 845{
d664cd98 846 struct bluecard_info *info = link->priv;
af2b3b50 847 int i, n;
1da177e4 848
7feabb64 849 link->config_index = 0x20;
90abdc3b
DB		 850
851 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
852 link->resource[0]->end = 64;
853 link->io_lines = 6;
1da177e4
LT		 854
855 for (n = 0; n < 0x400; n += 0x40) {
90abdc3b
DB		 856 link->resource[0]->start = n ^ 0x300;
857 i = pcmcia_request_io(link);
4c89e88b 858 if (i == 0)
1da177e4
LT		 859 break;
860 }
861
9ac3e58c 862 if (i != 0)
1da177e4 863 goto failed;
1da177e4 864
eb14120f 865 i = pcmcia_request_irq(link, bluecard_interrupt);
9ac3e58c 866 if (i != 0)
eb14120f 867 goto failed;
1da177e4 868
1ac71e5a 869 i = pcmcia_enable_device(link);
9ac3e58c 870 if (i != 0)
1da177e4 871 goto failed;
1da177e4
LT		 872
873 if (bluecard_open(info) != 0)
874 goto failed;
875
15b99ac1 876 return 0;
1da177e4 877
1da177e4
LT		 878failed:
879 bluecard_release(link);
15b99ac1 880 return -ENODEV;
1da177e4
LT		 881}
882
883
fba395ee 884static void bluecard_release(struct pcmcia_device *link)
1da177e4 885{
d664cd98 886 struct bluecard_info *info = link->priv;
1da177e4 887
e2d40963 888 bluecard_close(info);
1da177e4 889
d8ff9cdf 890 del_timer_sync(&(info->timer));
1da177e4 891
fba395ee 892 pcmcia_disable_device(link);
1da177e4
LT		 893}
894
25f8f54f 895static const struct pcmcia_device_id bluecard_ids[] = {
7f70cb6d
DB		 896 PCMCIA_DEVICE_PROD_ID12("BlueCard", "LSE041", 0xbaf16fbf, 0x657cc15e),
897 PCMCIA_DEVICE_PROD_ID12("BTCFCARD", "LSE139", 0xe3987764, 0x2524b59c),
898 PCMCIA_DEVICE_PROD_ID12("WSS", "LSE039", 0x0a0736ec, 0x24e6dfab),
899 PCMCIA_DEVICE_NULL
900};
901MODULE_DEVICE_TABLE(pcmcia, bluecard_ids);
902
1da177e4
LT		 903static struct pcmcia_driver bluecard_driver = {
904 .owner = THIS_MODULE,
2e9b981a 905 .name = "bluecard_cs",
15b99ac1 906 .probe = bluecard_probe,
cc3b4866 907 .remove = bluecard_detach,
7f70cb6d 908 .id_table = bluecard_ids,
1da177e4 909};
e0c005f4 910module_pcmcia_driver(bluecard_driver);
Linux 6.x block layer and io_uring tree(s)