1 /*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17 #include <linux/delay.h>
18 #include <linux/slab.h>
19 #include "./common.h"
20 #include "./pipe.h"
21
22 /*
23 * macros
24 */
25 #define usbhsp_addr_offset(p) ((usbhs_pipe_number(p) - 1) * 2)
26
27 #define usbhsp_flags_set(p, f) ((p)->flags |= USBHS_PIPE_FLAGS_##f)
28 #define usbhsp_flags_clr(p, f) ((p)->flags &= ~USBHS_PIPE_FLAGS_##f)
29 #define usbhsp_flags_has(p, f) ((p)->flags & USBHS_PIPE_FLAGS_##f)
30 #define usbhsp_flags_init(p) do {(p)->flags = 0; } while (0)
31
32 /*
33 * for debug
34 */
35 static char *usbhsp_pipe_name[] = {
36 [USB_ENDPOINT_XFER_CONTROL] = "DCP",
37 [USB_ENDPOINT_XFER_BULK] = "BULK",
38 [USB_ENDPOINT_XFER_INT] = "INT",
39 [USB_ENDPOINT_XFER_ISOC] = "ISO",
40 };
41
usbhs_pipe_name(struct usbhs_pipe * pipe)42 char *usbhs_pipe_name(struct usbhs_pipe *pipe)
43 {
44 return usbhsp_pipe_name[usbhs_pipe_type(pipe)];
45 }
46
47 /*
48 * DCPCTR/PIPEnCTR functions
49 */
usbhsp_pipectrl_set(struct usbhs_pipe * pipe,u16 mask,u16 val)50 static void usbhsp_pipectrl_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
51 {
52 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
53 int offset = usbhsp_addr_offset(pipe);
54
55 if (usbhs_pipe_is_dcp(pipe))
56 usbhs_bset(priv, DCPCTR, mask, val);
57 else
58 usbhs_bset(priv, PIPEnCTR + offset, mask, val);
59 }
60
usbhsp_pipectrl_get(struct usbhs_pipe * pipe)61 static u16 usbhsp_pipectrl_get(struct usbhs_pipe *pipe)
62 {
63 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
64 int offset = usbhsp_addr_offset(pipe);
65
66 if (usbhs_pipe_is_dcp(pipe))
67 return usbhs_read(priv, DCPCTR);
68 else
69 return usbhs_read(priv, PIPEnCTR + offset);
70 }
71
72 /*
73 * DCP/PIPE functions
74 */
__usbhsp_pipe_xxx_set(struct usbhs_pipe * pipe,u16 dcp_reg,u16 pipe_reg,u16 mask,u16 val)75 static void __usbhsp_pipe_xxx_set(struct usbhs_pipe *pipe,
76 u16 dcp_reg, u16 pipe_reg,
77 u16 mask, u16 val)
78 {
79 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
80
81 if (usbhs_pipe_is_dcp(pipe))
82 usbhs_bset(priv, dcp_reg, mask, val);
83 else
84 usbhs_bset(priv, pipe_reg, mask, val);
85 }
86
87 /*
88 * DCPCFG/PIPECFG functions
89 */
usbhsp_pipe_cfg_set(struct usbhs_pipe * pipe,u16 mask,u16 val)90 static void usbhsp_pipe_cfg_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
91 {
92 __usbhsp_pipe_xxx_set(pipe, DCPCFG, PIPECFG, mask, val);
93 }
94
95 /*
96 * PIPEBUF
97 */
usbhsp_pipe_buf_set(struct usbhs_pipe * pipe,u16 mask,u16 val)98 static void usbhsp_pipe_buf_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
99 {
100 if (usbhs_pipe_is_dcp(pipe))
101 return;
102
103 __usbhsp_pipe_xxx_set(pipe, 0, PIPEBUF, mask, val);
104 }
105
106 /*
107 * DCPMAXP/PIPEMAXP
108 */
usbhsp_pipe_maxp_set(struct usbhs_pipe * pipe,u16 mask,u16 val)109 static void usbhsp_pipe_maxp_set(struct usbhs_pipe *pipe, u16 mask, u16 val)
110 {
111 __usbhsp_pipe_xxx_set(pipe, DCPMAXP, PIPEMAXP, mask, val);
112 }
113
114 /*
115 * pipe control functions
116 */
usbhsp_pipe_select(struct usbhs_pipe * pipe)117 static void usbhsp_pipe_select(struct usbhs_pipe *pipe)
118 {
119 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
120
121 /*
122 * On pipe, this is necessary before
123 * accesses to below registers.
124 *
125 * PIPESEL : usbhsp_pipe_select
126 * PIPECFG : usbhsp_pipe_cfg_xxx
127 * PIPEBUF : usbhsp_pipe_buf_xxx
128 * PIPEMAXP : usbhsp_pipe_maxp_xxx
129 * PIPEPERI
130 */
131
132 /*
133 * if pipe is dcp, no pipe is selected.
134 * it is no problem, because dcp have its register
135 */
136 usbhs_write(priv, PIPESEL, 0xF & usbhs_pipe_number(pipe));
137 }
138
usbhsp_pipe_barrier(struct usbhs_pipe * pipe)139 static int usbhsp_pipe_barrier(struct usbhs_pipe *pipe)
140 {
141 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
142 int timeout = 1024;
143 u16 val;
144
145 /*
146 * make sure....
147 *
148 * Modify these bits when CSSTS = 0, PID = NAK, and no pipe number is
149 * specified by the CURPIPE bits.
150 * When changing the setting of this bit after changing
151 * the PID bits for the selected pipe from BUF to NAK,
152 * check that CSSTS = 0 and PBUSY = 0.
153 */
154
155 /*
156 * CURPIPE bit = 0
157 *
158 * see also
159 * "Operation"
160 * - "Pipe Control"
161 * - "Pipe Control Registers Switching Procedure"
162 */
163 usbhs_write(priv, CFIFOSEL, 0);
164 usbhs_pipe_disable(pipe);
165
166 do {
167 val = usbhsp_pipectrl_get(pipe);
168 val &= CSSTS | PID_MASK;
169 if (!val)
170 return 0;
171
172 udelay(10);
173
174 } while (timeout--);
175
176 return -EBUSY;
177 }
178
usbhs_pipe_is_accessible(struct usbhs_pipe * pipe)179 int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe)
180 {
181 u16 val;
182
183 val = usbhsp_pipectrl_get(pipe);
184 if (val & BSTS)
185 return 0;
186
187 return -EBUSY;
188 }
189
190 /*
191 * PID ctrl
192 */
__usbhsp_pid_try_nak_if_stall(struct usbhs_pipe * pipe)193 static void __usbhsp_pid_try_nak_if_stall(struct usbhs_pipe *pipe)
194 {
195 u16 pid = usbhsp_pipectrl_get(pipe);
196
197 pid &= PID_MASK;
198
199 /*
200 * see
201 * "Pipe n Control Register" - "PID"
202 */
203 switch (pid) {
204 case PID_STALL11:
205 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
206 /* fall-through */
207 case PID_STALL10:
208 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
209 }
210 }
211
usbhs_pipe_disable(struct usbhs_pipe * pipe)212 void usbhs_pipe_disable(struct usbhs_pipe *pipe)
213 {
214 int timeout = 1024;
215 u16 val;
216
217 /* see "Pipe n Control Register" - "PID" */
218 __usbhsp_pid_try_nak_if_stall(pipe);
219
220 usbhsp_pipectrl_set(pipe, PID_MASK, PID_NAK);
221
222 do {
223 val = usbhsp_pipectrl_get(pipe);
224 val &= PBUSY;
225 if (!val)
226 break;
227
228 udelay(10);
229 } while (timeout--);
230 }
231
usbhs_pipe_enable(struct usbhs_pipe * pipe)232 void usbhs_pipe_enable(struct usbhs_pipe *pipe)
233 {
234 /* see "Pipe n Control Register" - "PID" */
235 __usbhsp_pid_try_nak_if_stall(pipe);
236
237 usbhsp_pipectrl_set(pipe, PID_MASK, PID_BUF);
238 }
239
usbhs_pipe_stall(struct usbhs_pipe * pipe)240 void usbhs_pipe_stall(struct usbhs_pipe *pipe)
241 {
242 u16 pid = usbhsp_pipectrl_get(pipe);
243
244 pid &= PID_MASK;
245
246 /*
247 * see
248 * "Pipe n Control Register" - "PID"
249 */
250 switch (pid) {
251 case PID_NAK:
252 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL10);
253 break;
254 case PID_BUF:
255 usbhsp_pipectrl_set(pipe, PID_MASK, PID_STALL11);
256 break;
257 }
258 }
259
usbhs_pipe_is_stall(struct usbhs_pipe * pipe)260 int usbhs_pipe_is_stall(struct usbhs_pipe *pipe)
261 {
262 u16 pid = usbhsp_pipectrl_get(pipe) & PID_MASK;
263
264 return (int)(pid == PID_STALL10 || pid == PID_STALL11);
265 }
266
267 /*
268 * pipe setup
269 */
usbhsp_possible_double_buffer(struct usbhs_pipe * pipe)270 static int usbhsp_possible_double_buffer(struct usbhs_pipe *pipe)
271 {
272 /*
273 * only ISO / BULK pipe can use double buffer
274 */
275 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) ||
276 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
277 return 1;
278
279 return 0;
280 }
281
usbhsp_setup_pipecfg(struct usbhs_pipe * pipe,int is_host,int dir_in)282 static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
283 int is_host,
284 int dir_in)
285 {
286 u16 type = 0;
287 u16 bfre = 0;
288 u16 dblb = 0;
289 u16 cntmd = 0;
290 u16 dir = 0;
291 u16 epnum = 0;
292 u16 shtnak = 0;
293 u16 type_array[] = {
294 [USB_ENDPOINT_XFER_BULK] = TYPE_BULK,
295 [USB_ENDPOINT_XFER_INT] = TYPE_INT,
296 [USB_ENDPOINT_XFER_ISOC] = TYPE_ISO,
297 };
298 int is_double = usbhsp_possible_double_buffer(pipe);
299
300 if (usbhs_pipe_is_dcp(pipe))
301 return -EINVAL;
302
303 /*
304 * PIPECFG
305 *
306 * see
307 * - "Register Descriptions" - "PIPECFG" register
308 * - "Features" - "Pipe configuration"
309 * - "Operation" - "Pipe Control"
310 */
311
312 /* TYPE */
313 type = type_array[usbhs_pipe_type(pipe)];
314
315 /* BFRE */
316 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
317 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
318 bfre = 0; /* FIXME */
319
320 /* DBLB */
321 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC) ||
322 usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
323 dblb = (is_double) ? DBLB : 0;
324
325 /* CNTMD */
326 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK))
327 cntmd = 0; /* FIXME */
328
329 /* DIR */
330 if (dir_in)
331 usbhsp_flags_set(pipe, IS_DIR_HOST);
332
333 if (!!is_host ^ !!dir_in)
334 dir |= DIR_OUT;
335
336 if (!dir)
337 usbhsp_flags_set(pipe, IS_DIR_IN);
338
339 /* SHTNAK */
340 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_BULK) &&
341 !dir)
342 shtnak = SHTNAK;
343
344 /* EPNUM */
345 epnum = 0; /* see usbhs_pipe_config_update() */
346
347 return type |
348 bfre |
349 dblb |
350 cntmd |
351 dir |
352 shtnak |
353 epnum;
354 }
355
usbhsp_setup_pipebuff(struct usbhs_pipe * pipe)356 static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe)
357 {
358 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
359 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
360 struct device *dev = usbhs_priv_to_dev(priv);
361 int pipe_num = usbhs_pipe_number(pipe);
362 int is_double = usbhsp_possible_double_buffer(pipe);
363 u16 buff_size;
364 u16 bufnmb;
365 u16 bufnmb_cnt;
366
367 /*
368 * PIPEBUF
369 *
370 * see
371 * - "Register Descriptions" - "PIPEBUF" register
372 * - "Features" - "Pipe configuration"
373 * - "Operation" - "FIFO Buffer Memory"
374 * - "Operation" - "Pipe Control"
375 *
376 * ex) if pipe6 - pipe9 are USB_ENDPOINT_XFER_INT (SH7724)
377 *
378 * BUFNMB: PIPE
379 * 0: pipe0 (DCP 256byte)
380 * 1: -
381 * 2: -
382 * 3: -
383 * 4: pipe6 (INT 64byte)
384 * 5: pipe7 (INT 64byte)
385 * 6: pipe8 (INT 64byte)
386 * 7: pipe9 (INT 64byte)
387 * 8 - xx: free (for BULK, ISOC)
388 */
389
390 /*
391 * FIXME
392 *
393 * it doesn't have good buffer allocator
394 *
395 * DCP : 256 byte
396 * BULK: 512 byte
397 * INT : 64 byte
398 * ISOC: 512 byte
399 */
400 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_CONTROL))
401 buff_size = 256;
402 else if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
403 buff_size = 64;
404 else
405 buff_size = 512;
406
407 /* change buff_size to register value */
408 bufnmb_cnt = (buff_size / 64) - 1;
409
410 /* BUFNMB has been reserved for INT pipe
411 * see above */
412 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT)) {
413 bufnmb = pipe_num - 2;
414 } else {
415 bufnmb = info->bufnmb_last;
416 info->bufnmb_last += bufnmb_cnt + 1;
417
418 /*
419 * double buffer
420 */
421 if (is_double)
422 info->bufnmb_last += bufnmb_cnt + 1;
423 }
424
425 dev_dbg(dev, "pipe : %d : buff_size 0x%x: bufnmb 0x%x\n",
426 pipe_num, buff_size, bufnmb);
427
428 return (0x1f & bufnmb_cnt) << 10 |
429 (0xff & bufnmb) << 0;
430 }
431
usbhs_pipe_config_update(struct usbhs_pipe * pipe,u16 devsel,u16 epnum,u16 maxp)432 void usbhs_pipe_config_update(struct usbhs_pipe *pipe, u16 devsel,
433 u16 epnum, u16 maxp)
434 {
435 if (devsel > 0xA) {
436 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
437 struct device *dev = usbhs_priv_to_dev(priv);
438
439 dev_err(dev, "devsel error %d\n", devsel);
440
441 devsel = 0;
442 }
443
444 usbhsp_pipe_barrier(pipe);
445
446 pipe->maxp = maxp;
447
448 usbhsp_pipe_select(pipe);
449 usbhsp_pipe_maxp_set(pipe, 0xFFFF,
450 (devsel << 12) |
451 maxp);
452
453 if (!usbhs_pipe_is_dcp(pipe))
454 usbhsp_pipe_cfg_set(pipe, 0x000F, epnum);
455 }
456
457 /*
458 * pipe control
459 */
usbhs_pipe_get_maxpacket(struct usbhs_pipe * pipe)460 int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe)
461 {
462 /*
463 * see
464 * usbhs_pipe_config_update()
465 * usbhs_dcp_malloc()
466 */
467 return pipe->maxp;
468 }
469
usbhs_pipe_is_dir_in(struct usbhs_pipe * pipe)470 int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe)
471 {
472 return usbhsp_flags_has(pipe, IS_DIR_IN);
473 }
474
usbhs_pipe_is_dir_host(struct usbhs_pipe * pipe)475 int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe)
476 {
477 return usbhsp_flags_has(pipe, IS_DIR_HOST);
478 }
479
usbhs_pipe_data_sequence(struct usbhs_pipe * pipe,int sequence)480 void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence)
481 {
482 u16 mask = (SQCLR | SQSET);
483 u16 val;
484
485 /*
486 * sequence
487 * 0 : data0
488 * 1 : data1
489 * -1 : no change
490 */
491 switch (sequence) {
492 case 0:
493 val = SQCLR;
494 break;
495 case 1:
496 val = SQSET;
497 break;
498 default:
499 return;
500 }
501
502 usbhsp_pipectrl_set(pipe, mask, val);
503 }
504
usbhs_pipe_clear(struct usbhs_pipe * pipe)505 void usbhs_pipe_clear(struct usbhs_pipe *pipe)
506 {
507 usbhsp_pipectrl_set(pipe, ACLRM, ACLRM);
508 usbhsp_pipectrl_set(pipe, ACLRM, 0);
509 }
510
usbhsp_get_pipe(struct usbhs_priv * priv,u32 type)511 static struct usbhs_pipe *usbhsp_get_pipe(struct usbhs_priv *priv, u32 type)
512 {
513 struct usbhs_pipe *pos, *pipe;
514 int i;
515
516 /*
517 * find target pipe
518 */
519 pipe = NULL;
520 usbhs_for_each_pipe_with_dcp(pos, priv, i) {
521 if (!usbhs_pipe_type_is(pos, type))
522 continue;
523 if (usbhsp_flags_has(pos, IS_USED))
524 continue;
525
526 pipe = pos;
527 break;
528 }
529
530 if (!pipe)
531 return NULL;
532
533 /*
534 * initialize pipe flags
535 */
536 usbhsp_flags_init(pipe);
537 usbhsp_flags_set(pipe, IS_USED);
538
539 return pipe;
540 }
541
usbhs_pipe_init(struct usbhs_priv * priv,int (* dma_map_ctrl)(struct usbhs_pkt * pkt,int map))542 void usbhs_pipe_init(struct usbhs_priv *priv,
543 int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map))
544 {
545 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
546 struct usbhs_pipe *pipe;
547 int i;
548
549 /*
550 * FIXME
551 *
552 * driver needs good allocator.
553 *
554 * find first free buffer area (BULK, ISOC)
555 * (DCP, INT area is fixed)
556 *
557 * buffer number 0 - 3 have been reserved for DCP
558 * see
559 * usbhsp_to_bufnmb
560 */
561 info->bufnmb_last = 4;
562 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
563 if (usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_INT))
564 info->bufnmb_last++;
565
566 usbhsp_flags_init(pipe);
567 pipe->fifo = NULL;
568 pipe->mod_private = NULL;
569 INIT_LIST_HEAD(&pipe->list);
570
571 /* pipe force init */
572 usbhs_pipe_clear(pipe);
573 }
574
575 info->dma_map_ctrl = dma_map_ctrl;
576 }
577
usbhs_pipe_malloc(struct usbhs_priv * priv,int endpoint_type,int dir_in)578 struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
579 int endpoint_type,
580 int dir_in)
581 {
582 struct device *dev = usbhs_priv_to_dev(priv);
583 struct usbhs_pipe *pipe;
584 int is_host = usbhs_mod_is_host(priv);
585 int ret;
586 u16 pipecfg, pipebuf;
587
588 pipe = usbhsp_get_pipe(priv, endpoint_type);
589 if (!pipe) {
590 dev_err(dev, "can't get pipe (%s)\n",
591 usbhsp_pipe_name[endpoint_type]);
592 return NULL;
593 }
594
595 INIT_LIST_HEAD(&pipe->list);
596
597 usbhs_pipe_disable(pipe);
598
599 /* make sure pipe is not busy */
600 ret = usbhsp_pipe_barrier(pipe);
601 if (ret < 0) {
602 dev_err(dev, "pipe setup failed %d\n", usbhs_pipe_number(pipe));
603 return NULL;
604 }
605
606 pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in);
607 pipebuf = usbhsp_setup_pipebuff(pipe);
608
609 usbhsp_pipe_select(pipe);
610 usbhsp_pipe_cfg_set(pipe, 0xFFFF, pipecfg);
611 usbhsp_pipe_buf_set(pipe, 0xFFFF, pipebuf);
612
613 usbhs_pipe_sequence_data0(pipe);
614
615 dev_dbg(dev, "enable pipe %d : %s (%s)\n",
616 usbhs_pipe_number(pipe),
617 usbhs_pipe_name(pipe),
618 usbhs_pipe_is_dir_in(pipe) ? "in" : "out");
619
620 /*
621 * epnum / maxp are still not set to this pipe.
622 * call usbhs_pipe_config_update() after this function !!
623 */
624
625 return pipe;
626 }
627
usbhs_pipe_select_fifo(struct usbhs_pipe * pipe,struct usbhs_fifo * fifo)628 void usbhs_pipe_select_fifo(struct usbhs_pipe *pipe, struct usbhs_fifo *fifo)
629 {
630 if (pipe->fifo)
631 pipe->fifo->pipe = NULL;
632
633 pipe->fifo = fifo;
634
635 if (fifo)
636 fifo->pipe = pipe;
637 }
638
639
640 /*
641 * dcp control
642 */
usbhs_dcp_malloc(struct usbhs_priv * priv)643 struct usbhs_pipe *usbhs_dcp_malloc(struct usbhs_priv *priv)
644 {
645 struct usbhs_pipe *pipe;
646
647 pipe = usbhsp_get_pipe(priv, USB_ENDPOINT_XFER_CONTROL);
648 if (!pipe)
649 return NULL;
650
651 INIT_LIST_HEAD(&pipe->list);
652
653 /*
654 * call usbhs_pipe_config_update() after this function !!
655 */
656
657 return pipe;
658 }
659
usbhs_dcp_control_transfer_done(struct usbhs_pipe * pipe)660 void usbhs_dcp_control_transfer_done(struct usbhs_pipe *pipe)
661 {
662 struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
663
664 WARN_ON(!usbhs_pipe_is_dcp(pipe));
665
666 usbhs_pipe_enable(pipe);
667
668 if (!usbhs_mod_is_host(priv)) /* funconly */
669 usbhsp_pipectrl_set(pipe, CCPL, CCPL);
670 }
671
usbhs_dcp_dir_for_host(struct usbhs_pipe * pipe,int dir_out)672 void usbhs_dcp_dir_for_host(struct usbhs_pipe *pipe, int dir_out)
673 {
674 usbhsp_pipe_cfg_set(pipe, DIR_OUT,
675 dir_out ? DIR_OUT : 0);
676 }
677
678 /*
679 * pipe module function
680 */
usbhs_pipe_probe(struct usbhs_priv * priv)681 int usbhs_pipe_probe(struct usbhs_priv *priv)
682 {
683 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
684 struct usbhs_pipe *pipe;
685 struct device *dev = usbhs_priv_to_dev(priv);
686 u32 *pipe_type = usbhs_get_dparam(priv, pipe_type);
687 int pipe_size = usbhs_get_dparam(priv, pipe_size);
688 int i;
689
690 /* This driver expects 1st pipe is DCP */
691 if (pipe_type[0] != USB_ENDPOINT_XFER_CONTROL) {
692 dev_err(dev, "1st PIPE is not DCP\n");
693 return -EINVAL;
694 }
695
696 info->pipe = kzalloc(sizeof(struct usbhs_pipe) * pipe_size, GFP_KERNEL);
697 if (!info->pipe) {
698 dev_err(dev, "Could not allocate pipe\n");
699 return -ENOMEM;
700 }
701
702 info->size = pipe_size;
703
704 /*
705 * init pipe
706 */
707 usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
708 pipe->priv = priv;
709
710 usbhs_pipe_type(pipe) =
711 pipe_type[i] & USB_ENDPOINT_XFERTYPE_MASK;
712
713 dev_dbg(dev, "pipe %x\t: %s\n",
714 i, usbhsp_pipe_name[pipe_type[i]]);
715 }
716
717 return 0;
718 }
719
usbhs_pipe_remove(struct usbhs_priv * priv)720 void usbhs_pipe_remove(struct usbhs_priv *priv)
721 {
722 struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
723
724 kfree(info->pipe);
725 }
726