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x86, mrst: use a temporary variable for SFI irq
[linux-btrfs-devel.git] / drivers / usb / storage / realtek_cr.c
blob34adc4b42ceb7b564277e96e89b0869bc5563550
1 /* Driver for Realtek RTS51xx USB card reader
2 *
3 * Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
8 * later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, see <http://www.gnu.org/licenses/>.
17 *
18 * Author:
19 * wwang (wei_wang@realsil.com.cn)
20 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
21 */
22
23 #include <linux/module.h>
24 #include <linux/blkdev.h>
25 #include <linux/kthread.h>
26 #include <linux/sched.h>
27 #include <linux/kernel.h>
28 #include <linux/version.h>
29
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_cmnd.h>
32 #include <scsi/scsi_device.h>
33 #include <linux/cdrom.h>
34
35 #include <linux/usb.h>
36 #include <linux/slab.h>
37 #include <linux/usb_usual.h>
38
39 #include "usb.h"
40 #include "transport.h"
41 #include "protocol.h"
42 #include "debug.h"
43
44 MODULE_DESCRIPTION("Driver for Realtek USB Card Reader");
45 MODULE_AUTHOR("wwang <wei_wang@realsil.com.cn>");
46 MODULE_LICENSE("GPL");
47 MODULE_VERSION("1.03");
48
49 static int auto_delink_en = 1;
50 module_param(auto_delink_en, int, S_IRUGO | S_IWUSR);
51 MODULE_PARM_DESC(auto_delink_en, "enable auto delink");
52
53 #ifdef CONFIG_REALTEK_AUTOPM
54 static int ss_en = 1;
55 module_param(ss_en, int, S_IRUGO | S_IWUSR);
56 MODULE_PARM_DESC(ss_en, "enable selective suspend");
57
58 static int ss_delay = 50;
59 module_param(ss_delay, int, S_IRUGO | S_IWUSR);
60 MODULE_PARM_DESC(ss_delay,
61 "seconds to delay before entering selective suspend");
62
63 enum RTS51X_STAT {
64 RTS51X_STAT_INIT,
65 RTS51X_STAT_IDLE,
66 RTS51X_STAT_RUN,
67 RTS51X_STAT_SS
68 };
69
70 #define POLLING_INTERVAL 50
71
72 #define rts51x_set_stat(chip, stat) \
73 ((chip)->state = (enum RTS51X_STAT)(stat))
74 #define rts51x_get_stat(chip) ((chip)->state)
75
76 #define SET_LUN_READY(chip, lun) ((chip)->lun_ready |= ((u8)1 << (lun)))
77 #define CLR_LUN_READY(chip, lun) ((chip)->lun_ready &= ~((u8)1 << (lun)))
78 #define TST_LUN_READY(chip, lun) ((chip)->lun_ready & ((u8)1 << (lun)))
79
80 #endif
81
82 struct rts51x_status {
83 u16 vid;
84 u16 pid;
85 u8 cur_lun;
86 u8 card_type;
87 u8 total_lun;
88 u16 fw_ver;
89 u8 phy_exist;
90 u8 multi_flag;
91 u8 multi_card;
92 u8 log_exist;
93 union {
94 u8 detailed_type1;
95 u8 detailed_type2;
96 } detailed_type;
97 u8 function[2];
98 };
99
100 struct rts51x_chip {
101 u16 vendor_id;
102 u16 product_id;
103 char max_lun;
104
105 struct rts51x_status *status;
106 int status_len;
107
108 u32 flag;
109 #ifdef CONFIG_REALTEK_AUTOPM
110 struct us_data *us;
111 struct timer_list rts51x_suspend_timer;
112 unsigned long timer_expires;
113 int pwr_state;
114 u8 lun_ready;
115 enum RTS51X_STAT state;
116 int support_auto_delink;
117 #endif
118 /* used to back up the protocal choosen in probe1 phase */
119 proto_cmnd proto_handler_backup;
120 };
121
122 /* flag definition */
123 #define FLIDX_AUTO_DELINK 0x01
124
125 #define SCSI_LUN(srb) ((srb)->device->lun)
126
127 /* Bit Operation */
128 #define SET_BIT(data, idx) ((data) |= 1 << (idx))
129 #define CLR_BIT(data, idx) ((data) &= ~(1 << (idx)))
130 #define CHK_BIT(data, idx) ((data) & (1 << (idx)))
131
132 #define SET_AUTO_DELINK(chip) ((chip)->flag |= FLIDX_AUTO_DELINK)
133 #define CLR_AUTO_DELINK(chip) ((chip)->flag &= ~FLIDX_AUTO_DELINK)
134 #define CHK_AUTO_DELINK(chip) ((chip)->flag & FLIDX_AUTO_DELINK)
135
136 #define RTS51X_GET_VID(chip) ((chip)->vendor_id)
137 #define RTS51X_GET_PID(chip) ((chip)->product_id)
138
139 #define VENDOR_ID(chip) ((chip)->status[0].vid)
140 #define PRODUCT_ID(chip) ((chip)->status[0].pid)
141 #define FW_VERSION(chip) ((chip)->status[0].fw_ver)
142 #define STATUS_LEN(chip) ((chip)->status_len)
143
144 #define STATUS_SUCCESS 0
145 #define STATUS_FAIL 1
146
147 /* Check card reader function */
148 #define SUPPORT_DETAILED_TYPE1(chip) \
149 CHK_BIT((chip)->status[0].function[0], 1)
150 #define SUPPORT_OT(chip) \
151 CHK_BIT((chip)->status[0].function[0], 2)
152 #define SUPPORT_OC(chip) \
153 CHK_BIT((chip)->status[0].function[0], 3)
154 #define SUPPORT_AUTO_DELINK(chip) \
155 CHK_BIT((chip)->status[0].function[0], 4)
156 #define SUPPORT_SDIO(chip) \
157 CHK_BIT((chip)->status[0].function[1], 0)
158 #define SUPPORT_DETAILED_TYPE2(chip) \
159 CHK_BIT((chip)->status[0].function[1], 1)
160
161 #define CHECK_PID(chip, pid) (RTS51X_GET_PID(chip) == (pid))
162 #define CHECK_FW_VER(chip, fw_ver) (FW_VERSION(chip) == (fw_ver))
163 #define CHECK_ID(chip, pid, fw_ver) \
164 (CHECK_PID((chip), (pid)) && CHECK_FW_VER((chip), (fw_ver)))
165
166 static int init_realtek_cr(struct us_data *us);
167
168 /*
169 * The table of devices
170 */
171 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
172 vendorName, productName, useProtocol, useTransport, \
173 initFunction, flags) \
174 {\
175 USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
176 .driver_info = (flags)|(USB_US_TYPE_STOR<<24)\
177 }
178
179 static const struct usb_device_id realtek_cr_ids[] = {
180 # include "unusual_realtek.h"
181 {} /* Terminating entry */
182 };
183
184 MODULE_DEVICE_TABLE(usb, realtek_cr_ids);
185
186 #undef UNUSUAL_DEV
187
188 /*
189 * The flags table
190 */
191 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
192 vendor_name, product_name, use_protocol, use_transport, \
193 init_function, Flags) \
194 { \
195 .vendorName = vendor_name, \
196 .productName = product_name, \
197 .useProtocol = use_protocol, \
198 .useTransport = use_transport, \
199 .initFunction = init_function, \
200 }
201
202 static struct us_unusual_dev realtek_cr_unusual_dev_list[] = {
203 # include "unusual_realtek.h"
204 {} /* Terminating entry */
205 };
206
207 #undef UNUSUAL_DEV
208
209 static int rts51x_bulk_transport(struct us_data *us, u8 lun,
210 u8 *cmd, int cmd_len, u8 *buf, int buf_len,
211 enum dma_data_direction dir, int *act_len)
212 {
213 struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap *)us->iobuf;
214 struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap *)us->iobuf;
215 int result;
216 unsigned int residue;
217 unsigned int cswlen;
218 unsigned int cbwlen = US_BULK_CB_WRAP_LEN;
219
220 /* set up the command wrapper */
221 bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
222 bcb->DataTransferLength = cpu_to_le32(buf_len);
223 bcb->Flags = (dir == DMA_FROM_DEVICE) ? 1 << 7 : 0;
224 bcb->Tag = ++us->tag;
225 bcb->Lun = lun;
226 bcb->Length = cmd_len;
227
228 /* copy the command payload */
229 memset(bcb->CDB, 0, sizeof(bcb->CDB));
230 memcpy(bcb->CDB, cmd, bcb->Length);
231
232 /* send it to out endpoint */
233 result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe,
234 bcb, cbwlen, NULL);
235 if (result != USB_STOR_XFER_GOOD)
236 return USB_STOR_TRANSPORT_ERROR;
237
238 /* DATA STAGE */
239 /* send/receive data payload, if there is any */
240
241 if (buf && buf_len) {
242 unsigned int pipe = (dir == DMA_FROM_DEVICE) ?
243 us->recv_bulk_pipe : us->send_bulk_pipe;
244 result = usb_stor_bulk_transfer_buf(us, pipe,
245 buf, buf_len, NULL);
246 if (result == USB_STOR_XFER_ERROR)
247 return USB_STOR_TRANSPORT_ERROR;
248 }
249
250 /* get CSW for device status */
251 result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe,
252 bcs, US_BULK_CS_WRAP_LEN, &cswlen);
253 if (result != USB_STOR_XFER_GOOD)
254 return USB_STOR_TRANSPORT_ERROR;
255
256 /* check bulk status */
257 if (bcs->Signature != cpu_to_le32(US_BULK_CS_SIGN)) {
258 US_DEBUGP("Signature mismatch: got %08X, expecting %08X\n",
259 le32_to_cpu(bcs->Signature), US_BULK_CS_SIGN);
260 return USB_STOR_TRANSPORT_ERROR;
261 }
262
263 residue = bcs->Residue;
264 if (bcs->Tag != us->tag)
265 return USB_STOR_TRANSPORT_ERROR;
266
267 /* try to compute the actual residue, based on how much data
268 * was really transferred and what the device tells us */
269 if (residue)
270 residue = residue < buf_len ? residue : buf_len;
271
272 if (act_len)
273 *act_len = buf_len - residue;
274
275 /* based on the status code, we report good or bad */
276 switch (bcs->Status) {
277 case US_BULK_STAT_OK:
278 /* command good -- note that data could be short */
279 return USB_STOR_TRANSPORT_GOOD;
280
281 case US_BULK_STAT_FAIL:
282 /* command failed */
283 return USB_STOR_TRANSPORT_FAILED;
284
285 case US_BULK_STAT_PHASE:
286 /* phase error -- note that a transport reset will be
287 * invoked by the invoke_transport() function
288 */
289 return USB_STOR_TRANSPORT_ERROR;
290 }
291
292 /* we should never get here, but if we do, we're in trouble */
293 return USB_STOR_TRANSPORT_ERROR;
294 }
295
296 /* Determine what the maximum LUN supported is */
297 static int rts51x_get_max_lun(struct us_data *us)
298 {
299 int result;
300
301 /* issue the command */
302 us->iobuf[0] = 0;
303 result = usb_stor_control_msg(us, us->recv_ctrl_pipe,
304 US_BULK_GET_MAX_LUN,
305 USB_DIR_IN | USB_TYPE_CLASS |
306 USB_RECIP_INTERFACE,
307 0, us->ifnum, us->iobuf, 1, 10 * HZ);
308
309 US_DEBUGP("GetMaxLUN command result is %d, data is %d\n",
310 result, us->iobuf[0]);
311
312 /* if we have a successful request, return the result */
313 if (result > 0)
314 return us->iobuf[0];
315
316 return 0;
317 }
318
319 static int rts51x_read_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
320 {
321 int retval;
322 u8 cmnd[12] = { 0 };
323
324 US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
325
326 cmnd[0] = 0xF0;
327 cmnd[1] = 0x0D;
328 cmnd[2] = (u8) (addr >> 8);
329 cmnd[3] = (u8) addr;
330 cmnd[4] = (u8) (len >> 8);
331 cmnd[5] = (u8) len;
332
333 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
334 data, len, DMA_FROM_DEVICE, NULL);
335 if (retval != USB_STOR_TRANSPORT_GOOD)
336 return -EIO;
337
338 return 0;
339 }
340
341 static int rts51x_write_mem(struct us_data *us, u16 addr, u8 *data, u16 len)
342 {
343 int retval;
344 u8 cmnd[12] = { 0 };
345
346 US_DEBUGP("%s, addr = 0x%x, len = %d\n", __func__, addr, len);
347
348 cmnd[0] = 0xF0;
349 cmnd[1] = 0x0E;
350 cmnd[2] = (u8) (addr >> 8);
351 cmnd[3] = (u8) addr;
352 cmnd[4] = (u8) (len >> 8);
353 cmnd[5] = (u8) len;
354
355 retval = rts51x_bulk_transport(us, 0, cmnd, 12,
356 data, len, DMA_TO_DEVICE, NULL);
357 if (retval != USB_STOR_TRANSPORT_GOOD)
358 return -EIO;
359
360 return 0;
361 }
362
363 static int rts51x_read_status(struct us_data *us,
364 u8 lun, u8 *status, int len, int *actlen)
365 {
366 int retval;
367 u8 cmnd[12] = { 0 };
368
369 US_DEBUGP("%s, lun = %d\n", __func__, lun);
370
371 cmnd[0] = 0xF0;
372 cmnd[1] = 0x09;
373
374 retval = rts51x_bulk_transport(us, lun, cmnd, 12,
375 status, len, DMA_FROM_DEVICE, actlen);
376 if (retval != USB_STOR_TRANSPORT_GOOD)
377 return -EIO;
378
379 return 0;
380 }
381
382 static int rts51x_check_status(struct us_data *us, u8 lun)
383 {
384 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
385 int retval;
386 u8 buf[16];
387
388 retval = rts51x_read_status(us, lun, buf, 16, &(chip->status_len));
389 if (retval < 0)
390 return -EIO;
391
392 US_DEBUGP("chip->status_len = %d\n", chip->status_len);
393
394 chip->status[lun].vid = ((u16) buf[0] << 8) | buf[1];
395 chip->status[lun].pid = ((u16) buf[2] << 8) | buf[3];
396 chip->status[lun].cur_lun = buf[4];
397 chip->status[lun].card_type = buf[5];
398 chip->status[lun].total_lun = buf[6];
399 chip->status[lun].fw_ver = ((u16) buf[7] << 8) | buf[8];
400 chip->status[lun].phy_exist = buf[9];
401 chip->status[lun].multi_flag = buf[10];
402 chip->status[lun].multi_card = buf[11];
403 chip->status[lun].log_exist = buf[12];
404 if (chip->status_len == 16) {
405 chip->status[lun].detailed_type.detailed_type1 = buf[13];
406 chip->status[lun].function[0] = buf[14];
407 chip->status[lun].function[1] = buf[15];
408 }
409
410 return 0;
411 }
412
413 static int enable_oscillator(struct us_data *us)
414 {
415 int retval;
416 u8 value;
417
418 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
419 if (retval < 0)
420 return -EIO;
421
422 value |= 0x04;
423 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
424 if (retval < 0)
425 return -EIO;
426
427 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
428 if (retval < 0)
429 return -EIO;
430
431 if (!(value & 0x04))
432 return -EIO;
433
434 return 0;
435 }
436
437 static int do_config_autodelink(struct us_data *us, int enable, int force)
438 {
439 int retval;
440 u8 value;
441
442 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
443 if (retval < 0)
444 return -EIO;
445
446 if (enable) {
447 if (force)
448 value |= 0x03;
449 else
450 value |= 0x01;
451 } else {
452 value &= ~0x03;
453 }
454
455 US_DEBUGP("In %s,set 0xfe47 to 0x%x\n", __func__, value);
456
457 retval = rts51x_write_mem(us, 0xFE47, &value, 1);
458 if (retval < 0)
459 return -EIO;
460
461 return 0;
462 }
463
464 static int config_autodelink_after_power_on(struct us_data *us)
465 {
466 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
467 int retval;
468 u8 value;
469
470 US_DEBUGP("%s: <---\n", __func__);
471
472 if (!CHK_AUTO_DELINK(chip))
473 return 0;
474
475 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
476 if (retval < 0)
477 return -EIO;
478
479 if (auto_delink_en) {
480 CLR_BIT(value, 0);
481 CLR_BIT(value, 1);
482 SET_BIT(value, 2);
483
484 if (CHECK_ID(chip, 0x0138, 0x3882))
485 CLR_BIT(value, 2);
486
487 SET_BIT(value, 7);
488
489 retval = rts51x_write_mem(us, 0xFE47, &value, 1);
490 if (retval < 0)
491 return -EIO;
492
493 retval = enable_oscillator(us);
494 if (retval == 0)
495 (void)do_config_autodelink(us, 1, 0);
496 } else {
497 /* Autodelink controlled by firmware */
498
499 SET_BIT(value, 2);
500
501 if (CHECK_ID(chip, 0x0138, 0x3882))
502 CLR_BIT(value, 2);
503
504 if (CHECK_ID(chip, 0x0159, 0x5889) ||
505 CHECK_ID(chip, 0x0138, 0x3880)) {
506 CLR_BIT(value, 0);
507 CLR_BIT(value, 7);
508 }
509
510 retval = rts51x_write_mem(us, 0xFE47, &value, 1);
511 if (retval < 0)
512 return -EIO;
513
514 if (CHECK_ID(chip, 0x0159, 0x5888)) {
515 value = 0xFF;
516 retval = rts51x_write_mem(us, 0xFE79, &value, 1);
517 if (retval < 0)
518 return -EIO;
519
520 value = 0x01;
521 retval = rts51x_write_mem(us, 0x48, &value, 1);
522 if (retval < 0)
523 return -EIO;
524 }
525 }
526
527 US_DEBUGP("%s: --->\n", __func__);
528
529 return 0;
530 }
531
532 static int config_autodelink_before_power_down(struct us_data *us)
533 {
534 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
535 int retval;
536 u8 value;
537
538 US_DEBUGP("%s: <---\n", __func__);
539
540 if (!CHK_AUTO_DELINK(chip))
541 return 0;
542
543 if (auto_delink_en) {
544 retval = rts51x_read_mem(us, 0xFE77, &value, 1);
545 if (retval < 0)
546 return -EIO;
547
548 SET_BIT(value, 2);
549 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
550 if (retval < 0)
551 return -EIO;
552
553 if (CHECK_ID(chip, 0x0159, 0x5888)) {
554 value = 0x01;
555 retval = rts51x_write_mem(us, 0x48, &value, 1);
556 if (retval < 0)
557 return -EIO;
558 }
559
560 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
561 if (retval < 0)
562 return -EIO;
563
564 SET_BIT(value, 0);
565 if (CHECK_ID(chip, 0x0138, 0x3882))
566 SET_BIT(value, 2);
567 retval = rts51x_write_mem(us, 0xFE77, &value, 1);
568 if (retval < 0)
569 return -EIO;
570 } else {
571 if (CHECK_ID(chip, 0x0159, 0x5889) ||
572 CHECK_ID(chip, 0x0138, 0x3880) ||
573 CHECK_ID(chip, 0x0138, 0x3882)) {
574 retval = rts51x_read_mem(us, 0xFE47, &value, 1);
575 if (retval < 0)
576 return -EIO;
577
578 if (CHECK_ID(chip, 0x0159, 0x5889) ||
579 CHECK_ID(chip, 0x0138, 0x3880)) {
580 SET_BIT(value, 0);
581 SET_BIT(value, 7);
582 }
583
584 if (CHECK_ID(chip, 0x0138, 0x3882))
585 SET_BIT(value, 2);
586
587 retval = rts51x_write_mem(us, 0xFE47, &value, 1);
588 if (retval < 0)
589 return -EIO;
590 }
591
592 if (CHECK_ID(chip, 0x0159, 0x5888)) {
593 value = 0x01;
594 retval = rts51x_write_mem(us, 0x48, &value, 1);
595 if (retval < 0)
596 return -EIO;
597 }
598 }
599
600 US_DEBUGP("%s: --->\n", __func__);
601
602 return 0;
603 }
604
605 static void fw5895_init(struct us_data *us)
606 {
607 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
608 int retval;
609 u8 val;
610
611 US_DEBUGP("%s: <---\n", __func__);
612
613 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
614 US_DEBUGP("Not the specified device, return immediately!\n");
615 } else {
616 retval = rts51x_read_mem(us, 0xFD6F, &val, 1);
617 if (retval == STATUS_SUCCESS && (val & 0x1F) == 0) {
618 val = 0x1F;
619 retval = rts51x_write_mem(us, 0xFD70, &val, 1);
620 if (retval != STATUS_SUCCESS)
621 US_DEBUGP("Write memory fail\n");
622 } else {
623 US_DEBUGP("Read memory fail, OR (val & 0x1F) != 0\n");
624 }
625 }
626
627 US_DEBUGP("%s: --->\n", __func__);
628 }
629
630 #ifdef CONFIG_REALTEK_AUTOPM
631 static void fw5895_set_mmc_wp(struct us_data *us)
632 {
633 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
634 int retval;
635 u8 buf[13];
636
637 US_DEBUGP("%s: <---\n", __func__);
638
639 if ((PRODUCT_ID(chip) != 0x0158) || (FW_VERSION(chip) != 0x5895)) {
640 US_DEBUGP("Not the specified device, return immediately!\n");
641 } else {
642 retval = rts51x_read_mem(us, 0xFD6F, buf, 1);
643 if (retval == STATUS_SUCCESS && (buf[0] & 0x24) == 0x24) {
644 /* SD Exist and SD WP */
645 retval = rts51x_read_mem(us, 0xD04E, buf, 1);
646 if (retval == STATUS_SUCCESS) {
647 buf[0] |= 0x04;
648 retval = rts51x_write_mem(us, 0xFD70, buf, 1);
649 if (retval != STATUS_SUCCESS)
650 US_DEBUGP("Write memory fail\n");
651 } else {
652 US_DEBUGP("Read memory fail\n");
653 }
654 } else {
655 US_DEBUGP("Read memory fail, OR (buf[0]&0x24)!=0x24\n");
656 }
657 }
658
659 US_DEBUGP("%s: --->\n", __func__);
660 }
661
662 static void rts51x_modi_suspend_timer(struct rts51x_chip *chip)
663 {
664 US_DEBUGP("%s: <---, state:%d\n", __func__, rts51x_get_stat(chip));
665
666 chip->timer_expires = jiffies + msecs_to_jiffies(1000*ss_delay);
667 mod_timer(&chip->rts51x_suspend_timer, chip->timer_expires);
668
669 US_DEBUGP("%s: --->\n", __func__);
670 }
671
672 static void rts51x_suspend_timer_fn(unsigned long data)
673 {
674 struct rts51x_chip *chip = (struct rts51x_chip *)data;
675 struct us_data *us = chip->us;
676
677 US_DEBUGP("%s: <---\n", __func__);
678
679 switch (rts51x_get_stat(chip)) {
680 case RTS51X_STAT_INIT:
681 case RTS51X_STAT_RUN:
682 rts51x_modi_suspend_timer(chip);
683 break;
684 case RTS51X_STAT_IDLE:
685 case RTS51X_STAT_SS:
686 US_DEBUGP("%s: RTS51X_STAT_SS, intf->pm_usage_cnt:%d,"
687 "power.usage:%d\n", __func__,
688 atomic_read(&us->pusb_intf->pm_usage_cnt),
689 atomic_read(&us->pusb_intf->dev.power.usage_count));
690
691 if (atomic_read(&us->pusb_intf->pm_usage_cnt) > 0) {
692 US_DEBUGP("%s: Ready to enter SS state.\n",
693 __func__);
694 rts51x_set_stat(chip, RTS51X_STAT_SS);
695 /* ignore mass storage interface's children */
696 pm_suspend_ignore_children(&us->pusb_intf->dev, true);
697 usb_autopm_put_interface(us->pusb_intf);
698 US_DEBUGP("%s: RTS51X_STAT_SS 01,"
699 "intf->pm_usage_cnt:%d, power.usage:%d\n",
700 __func__,
701 atomic_read(&us->pusb_intf->pm_usage_cnt),
702 atomic_read(
703 &us->pusb_intf->dev.power.usage_count));
704 }
705 break;
706 default:
707 US_DEBUGP("%s: Unknonwn state !!!\n", __func__);
708 break;
709 }
710
711 US_DEBUGP("%s: --->\n", __func__);
712 }
713
714 static inline int working_scsi(struct scsi_cmnd *srb)
715 {
716 if ((srb->cmnd[0] == TEST_UNIT_READY) ||
717 (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL)) {
718 return 0;
719 }
720
721 return 1;
722 }
723
724 void rts51x_invoke_transport(struct scsi_cmnd *srb, struct us_data *us)
725 {
726 struct rts51x_chip *chip = (struct rts51x_chip *)(us->extra);
727 static int card_first_show = 1;
728 static u8 media_not_present[] = { 0x70, 0, 0x02, 0, 0, 0, 0,
729 10, 0, 0, 0, 0, 0x3A, 0, 0, 0, 0, 0
730 };
731 static u8 invalid_cmd_field[] = { 0x70, 0, 0x05, 0, 0, 0, 0,
732 10, 0, 0, 0, 0, 0x24, 0, 0, 0, 0, 0
733 };
734 int ret;
735
736 US_DEBUGP("%s: <---\n", __func__);
737
738 if (working_scsi(srb)) {
739 US_DEBUGP("%s: working scsi, intf->pm_usage_cnt:%d,"
740 "power.usage:%d\n", __func__,
741 atomic_read(&us->pusb_intf->pm_usage_cnt),
742 atomic_read(&us->pusb_intf->dev.power.usage_count));
743
744 if (atomic_read(&us->pusb_intf->pm_usage_cnt) <= 0) {
745 ret = usb_autopm_get_interface(us->pusb_intf);
746 US_DEBUGP("%s: working scsi, ret=%d\n", __func__, ret);
747 }
748 if (rts51x_get_stat(chip) != RTS51X_STAT_RUN)
749 rts51x_set_stat(chip, RTS51X_STAT_RUN);
750 chip->proto_handler_backup(srb, us);
751 } else {
752 if (rts51x_get_stat(chip) == RTS51X_STAT_SS) {
753 US_DEBUGP("%s: NOT working scsi\n", __func__);
754 if ((srb->cmnd[0] == TEST_UNIT_READY) &&
755 (chip->pwr_state == US_SUSPEND)) {
756 if (TST_LUN_READY(chip, srb->device->lun)) {
757 srb->result = SAM_STAT_GOOD;
758 } else {
759 srb->result = SAM_STAT_CHECK_CONDITION;
760 memcpy(srb->sense_buffer,
761 media_not_present,
762 US_SENSE_SIZE);
763 }
764 US_DEBUGP("%s: TEST_UNIT_READY--->\n",
765 __func__);
766 goto out;
767 }
768 if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
769 int prevent = srb->cmnd[4] & 0x1;
770 if (prevent) {
771 srb->result = SAM_STAT_CHECK_CONDITION;
772 memcpy(srb->sense_buffer,
773 invalid_cmd_field,
774 US_SENSE_SIZE);
775 } else {
776 srb->result = SAM_STAT_GOOD;
777 }
778 US_DEBUGP("%s: ALLOW_MEDIUM_REMOVAL--->\n",
779 __func__);
780 goto out;
781 }
782 } else {
783 US_DEBUGP("%s: NOT working scsi, not SS\n", __func__);
784 chip->proto_handler_backup(srb, us);
785 /* Check wether card is plugged in */
786 if (srb->cmnd[0] == TEST_UNIT_READY) {
787 if (srb->result == SAM_STAT_GOOD) {
788 SET_LUN_READY(chip, srb->device->lun);
789 if (card_first_show) {
790 card_first_show = 0;
791 fw5895_set_mmc_wp(us);
792 }
793 } else {
794 CLR_LUN_READY(chip, srb->device->lun);
795 card_first_show = 1;
796 }
797 }
798 if (rts51x_get_stat(chip) != RTS51X_STAT_IDLE)
799 rts51x_set_stat(chip, RTS51X_STAT_IDLE);
800 }
801 }
802 out:
803 US_DEBUGP("%s: state:%d\n", __func__, rts51x_get_stat(chip));
804 if (rts51x_get_stat(chip) == RTS51X_STAT_RUN)
805 rts51x_modi_suspend_timer(chip);
806
807 US_DEBUGP("%s: --->\n", __func__);
808 }
809
810 static int realtek_cr_autosuspend_setup(struct us_data *us)
811 {
812 struct rts51x_chip *chip;
813 struct rts51x_status *status = NULL;
814 u8 buf[16];
815 int retval;
816
817 chip = (struct rts51x_chip *)us->extra;
818 chip->support_auto_delink = 0;
819 chip->pwr_state = US_RESUME;
820 chip->lun_ready = 0;
821 rts51x_set_stat(chip, RTS51X_STAT_INIT);
822
823 retval = rts51x_read_status(us, 0, buf, 16, &(chip->status_len));
824 if (retval != STATUS_SUCCESS) {
825 US_DEBUGP("Read status fail\n");
826 return -EIO;
827 }
828 status = chip->status;
829 status->vid = ((u16) buf[0] << 8) | buf[1];
830 status->pid = ((u16) buf[2] << 8) | buf[3];
831 status->cur_lun = buf[4];
832 status->card_type = buf[5];
833 status->total_lun = buf[6];
834 status->fw_ver = ((u16) buf[7] << 8) | buf[8];
835 status->phy_exist = buf[9];
836 status->multi_flag = buf[10];
837 status->multi_card = buf[11];
838 status->log_exist = buf[12];
839 if (chip->status_len == 16) {
840 status->detailed_type.detailed_type1 = buf[13];
841 status->function[0] = buf[14];
842 status->function[1] = buf[15];
843 }
844
845 /* back up the proto_handler in us->extra */
846 chip = (struct rts51x_chip *)(us->extra);
847 chip->proto_handler_backup = us->proto_handler;
848 /* Set the autosuspend_delay to 0 */
849 pm_runtime_set_autosuspend_delay(&us->pusb_dev->dev, 0);
850 /* override us->proto_handler setted in get_protocol() */
851 us->proto_handler = rts51x_invoke_transport;
852
853 chip->timer_expires = 0;
854 setup_timer(&chip->rts51x_suspend_timer, rts51x_suspend_timer_fn,
855 (unsigned long)chip);
856 fw5895_init(us);
857
858 /* enable autosuspend funciton of the usb device */
859 usb_enable_autosuspend(us->pusb_dev);
860
861 return 0;
862 }
863 #endif
864
865 static void realtek_cr_destructor(void *extra)
866 {
867 struct rts51x_chip *chip = (struct rts51x_chip *)extra;
868
869 US_DEBUGP("%s: <---\n", __func__);
870
871 if (!chip)
872 return;
873 #ifdef CONFIG_REALTEK_AUTOPM
874 if (ss_en) {
875 del_timer(&chip->rts51x_suspend_timer);
876 chip->timer_expires = 0;
877 }
878 #endif
879 kfree(chip->status);
880 }
881
882 #ifdef CONFIG_PM
883 int realtek_cr_suspend(struct usb_interface *iface, pm_message_t message)
884 {
885 struct us_data *us = usb_get_intfdata(iface);
886
887 US_DEBUGP("%s: <---\n", __func__);
888
889 /* wait until no command is running */
890 mutex_lock(&us->dev_mutex);
891
892 config_autodelink_before_power_down(us);
893
894 mutex_unlock(&us->dev_mutex);
895
896 US_DEBUGP("%s: --->\n", __func__);
897
898 return 0;
899 }
900
901 static int realtek_cr_resume(struct usb_interface *iface)
902 {
903 struct us_data *us = usb_get_intfdata(iface);
904
905 US_DEBUGP("%s: <---\n", __func__);
906
907 fw5895_init(us);
908 config_autodelink_after_power_on(us);
909
910 US_DEBUGP("%s: --->\n", __func__);
911
912 return 0;
913 }
914 #else
915 #define realtek_cr_suspend NULL
916 #define realtek_cr_resume NULL
917 #endif
918
919 static int init_realtek_cr(struct us_data *us)
920 {
921 struct rts51x_chip *chip;
922 int size, i, retval;
923
924 chip = kzalloc(sizeof(struct rts51x_chip), GFP_KERNEL);
925 if (!chip)
926 return -ENOMEM;
927
928 us->extra = chip;
929 us->extra_destructor = realtek_cr_destructor;
930 us->max_lun = chip->max_lun = rts51x_get_max_lun(us);
931
932 US_DEBUGP("chip->max_lun = %d\n", chip->max_lun);
933
934 size = (chip->max_lun + 1) * sizeof(struct rts51x_status);
935 chip->status = kzalloc(size, GFP_KERNEL);
936 if (!chip->status)
937 goto INIT_FAIL;
938
939 for (i = 0; i <= (int)(chip->max_lun); i++) {
940 retval = rts51x_check_status(us, (u8) i);
941 if (retval < 0)
942 goto INIT_FAIL;
943 }
944
945 if (CHECK_FW_VER(chip, 0x5888) || CHECK_FW_VER(chip, 0x5889) ||
946 CHECK_FW_VER(chip, 0x5901))
947 SET_AUTO_DELINK(chip);
948 if (STATUS_LEN(chip) == 16) {
949 if (SUPPORT_AUTO_DELINK(chip))
950 SET_AUTO_DELINK(chip);
951 }
952 #ifdef CONFIG_REALTEK_AUTOPM
953 if (ss_en) {
954 chip->us = us;
955 realtek_cr_autosuspend_setup(us);
956 }
957 #endif
958
959 US_DEBUGP("chip->flag = 0x%x\n", chip->flag);
960
961 (void)config_autodelink_after_power_on(us);
962
963 return 0;
964
965 INIT_FAIL:
966 if (us->extra) {
967 kfree(chip->status);
968 kfree(us->extra);
969 us->extra = NULL;
970 }
971
972 return -EIO;
973 }
974
975 static int realtek_cr_probe(struct usb_interface *intf,
976 const struct usb_device_id *id)
977 {
978 struct us_data *us;
979 int result;
980
981 US_DEBUGP("Probe Realtek Card Reader!\n");
982
983 result = usb_stor_probe1(&us, intf, id,
984 (id - realtek_cr_ids) +
985 realtek_cr_unusual_dev_list);
986 if (result)
987 return result;
988
989 result = usb_stor_probe2(us);
990
991 return result;
992 }
993
994 static struct usb_driver realtek_cr_driver = {
995 .name = "ums-realtek",
996 .probe = realtek_cr_probe,
997 .disconnect = usb_stor_disconnect,
998 /* .suspend = usb_stor_suspend, */
999 /* .resume = usb_stor_resume, */
1000 .reset_resume = usb_stor_reset_resume,
1001 .suspend = realtek_cr_suspend,
1002 .resume = realtek_cr_resume,
1003 .pre_reset = usb_stor_pre_reset,
1004 .post_reset = usb_stor_post_reset,
1005 .id_table = realtek_cr_ids,
1006 .soft_unbind = 1,
1007 .supports_autosuspend = 1,
1008 };
1009
1010 static int __init realtek_cr_init(void)
1011 {
1012 return usb_register(&realtek_cr_driver);
1013 }
1014
1015 static void __exit realtek_cr_exit(void)
1016 {
1017 usb_deregister(&realtek_cr_driver);
1018 }
1019
1020 module_init(realtek_cr_init);
1021 module_exit(realtek_cr_exit);
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