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Merge branch 'master' of http://git.denx.de/u-boot-samsung
[u-boot] / drivers / usb / host / r8a66597-hcd.c
1 /*
2  * R8A66597 HCD (Host Controller Driver) for u-boot
3  *
4  * Copyright (C) 2008  Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
18  *
19  */
20
21 #include <common.h>
22 #include <usb.h>
23 #include <asm/io.h>
24
25 #include "r8a66597.h"
26
27 #ifdef R8A66597_DEBUG
28 #define R8A66597_DPRINT         printf
29 #else
30 #define R8A66597_DPRINT(...)
31 #endif
32
33 static const char hcd_name[] = "r8a66597_hcd";
34 static struct r8a66597 gr8a66597;
35
36 static void get_hub_data(struct usb_device *dev, u16 *hub_devnum, u16 *hubport)
37 {
38         int i;
39
40         *hub_devnum = 0;
41         *hubport = 0;
42
43         /* check a device connected to root_hub */
44         if ((dev->parent && dev->parent->devnum == 1) ||
45             (dev->devnum == 1))
46                 return;
47
48         for (i = 0; i < USB_MAXCHILDREN; i++) {
49                 if (dev->parent->children[i] == dev) {
50                         *hub_devnum = (u8)dev->parent->devnum;
51                         *hubport = i;
52                         return;
53                 }
54         }
55
56         printf("get_hub_data error.\n");
57 }
58
59 static void set_devadd(struct r8a66597 *r8a66597, u8 r8a66597_address,
60                         struct usb_device *dev, int port)
61 {
62         u16 val, usbspd, upphub, hubport;
63         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
64
65         get_hub_data(dev, &upphub, &hubport);
66         usbspd = r8a66597->speed;
67         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
68         r8a66597_write(r8a66597, val, devadd_reg);
69 }
70
71 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
72 {
73         u16 tmp;
74         int i = 0;
75
76 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
77         do {
78                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
79                 tmp = r8a66597_read(r8a66597, SYSCFG0);
80                 if (i++ > 1000) {
81                         printf("register access fail.\n");
82                         return -1;
83                 }
84         } while ((tmp & SCKE) != SCKE);
85         r8a66597_write(r8a66597, 0x04, 0x02);
86 #else
87         do {
88                 r8a66597_write(r8a66597, USBE, SYSCFG0);
89                 tmp = r8a66597_read(r8a66597, SYSCFG0);
90                 if (i++ > 1000) {
91                         printf("register access fail.\n");
92                         return -1;
93                 }
94         } while ((tmp & USBE) != USBE);
95         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
96         r8a66597_mdfy(r8a66597, CONFIG_R8A66597_XTAL, XTAL, SYSCFG0);
97
98         i = 0;
99         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
100         do {
101                 udelay(1000);
102                 tmp = r8a66597_read(r8a66597, SYSCFG0);
103                 if (i++ > 500) {
104                         printf("register access fail.\n");
105                         return -1;
106                 }
107         } while ((tmp & SCKE) != SCKE);
108 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
109
110         return 0;
111 }
112
113 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
114 {
115         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
116         udelay(1);
117 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
118         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
119         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
120         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
121 #endif
122 }
123
124 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
125 {
126         u16 val;
127
128         val = port ? DRPD : DCFM | DRPD;
129         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
130         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
131
132         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
133 }
134
135 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
136 {
137         u16 val, tmp;
138
139         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
140         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
141
142         r8a66597_port_power(r8a66597, port, 0);
143
144         do {
145                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
146                 udelay(640);
147         } while (tmp == EDGESTS);
148
149         val = port ? DRPD : DCFM | DRPD;
150         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
151         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
152 }
153
154 static int enable_controller(struct r8a66597 *r8a66597)
155 {
156         int ret, port;
157
158         ret = r8a66597_clock_enable(r8a66597);
159         if (ret < 0)
160                 return ret;
161
162         r8a66597_bset(r8a66597, CONFIG_R8A66597_LDRV & LDRV, PINCFG);
163         r8a66597_bset(r8a66597, USBE, SYSCFG0);
164
165         r8a66597_bset(r8a66597, INTL, SOFCFG);
166         r8a66597_write(r8a66597, 0, INTENB0);
167         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
168                 r8a66597_write(r8a66597, 0, get_intenb_reg(port));
169
170         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, CFIFOSEL);
171         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D0FIFOSEL);
172         r8a66597_bset(r8a66597, CONFIG_R8A66597_ENDIAN & BIGEND, D1FIFOSEL);
173         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
174
175         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
176                 r8a66597_enable_port(r8a66597, port);
177
178         return 0;
179 }
180
181 static void disable_controller(struct r8a66597 *r8a66597)
182 {
183         int i;
184
185         if (!(r8a66597_read(r8a66597, SYSCFG0) & USBE))
186                 return;
187
188         r8a66597_write(r8a66597, 0, INTENB0);
189         r8a66597_write(r8a66597, 0, INTSTS0);
190
191         r8a66597_write(r8a66597, 0, D0FIFOSEL);
192         r8a66597_write(r8a66597, 0, D1FIFOSEL);
193         r8a66597_write(r8a66597, 0, DCPCFG);
194         r8a66597_write(r8a66597, 0x40, DCPMAXP);
195         r8a66597_write(r8a66597, 0, DCPCTR);
196
197         for (i = 0; i <= 10; i++)
198                 r8a66597_write(r8a66597, 0, get_devadd_addr(i));
199         for (i = 1; i <= 5; i++) {
200                 r8a66597_write(r8a66597, 0, get_pipetre_addr(i));
201                 r8a66597_write(r8a66597, 0, get_pipetrn_addr(i));
202         }
203         for (i = 1; i < R8A66597_MAX_NUM_PIPE; i++) {
204                 r8a66597_write(r8a66597, 0, get_pipectr_addr(i));
205                 r8a66597_write(r8a66597, i, PIPESEL);
206                 r8a66597_write(r8a66597, 0, PIPECFG);
207                 r8a66597_write(r8a66597, 0, PIPEBUF);
208                 r8a66597_write(r8a66597, 0, PIPEMAXP);
209                 r8a66597_write(r8a66597, 0, PIPEPERI);
210         }
211
212         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++)
213                 r8a66597_disable_port(r8a66597, i);
214
215         r8a66597_clock_disable(r8a66597);
216 }
217
218 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
219                               u16 mask, u16 loop)
220 {
221         u16 tmp;
222         int i = 0;
223
224         do {
225                 tmp = r8a66597_read(r8a66597, reg);
226                 if (i++ > 1000000) {
227                         printf("register%lx, loop %x is timeout\n", reg, loop);
228                         break;
229                 }
230         } while ((tmp & mask) != loop);
231 }
232
233 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
234                                 struct usb_device *dev, unsigned long pipe)
235 {
236         u16 val = 0;
237         u16 pipenum, bufnum, maxpacket;
238
239         if (usb_pipein(pipe)) {
240                 pipenum = BULK_IN_PIPENUM;
241                 bufnum = BULK_IN_BUFNUM;
242                 maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
243         } else {
244                 pipenum = BULK_OUT_PIPENUM;
245                 bufnum = BULK_OUT_BUFNUM;
246                 maxpacket = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
247         }
248
249         if (r8a66597->pipe_config & (1 << pipenum))
250                 return;
251         r8a66597->pipe_config |= (1 << pipenum);
252
253         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(pipenum));
254         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(pipenum));
255         r8a66597_write(r8a66597, pipenum, PIPESEL);
256
257         /* FIXME: This driver support bulk transfer only. */
258         if (!usb_pipein(pipe))
259                 val |= R8A66597_DIR;
260         else
261                 val |= R8A66597_SHTNAK;
262         val |= R8A66597_BULK | R8A66597_DBLB | usb_pipeendpoint(pipe);
263         r8a66597_write(r8a66597, val, PIPECFG);
264
265         r8a66597_write(r8a66597, (8 << 10) | bufnum, PIPEBUF);
266         r8a66597_write(r8a66597, make_devsel(usb_pipedevice(pipe)) |
267                                  maxpacket, PIPEMAXP);
268         r8a66597_write(r8a66597, 0, PIPEPERI);
269         r8a66597_write(r8a66597, SQCLR, get_pipectr_addr(pipenum));
270 }
271
272 static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
273                              struct devrequest *setup)
274 {
275         int i;
276         unsigned short *p = (unsigned short *)setup;
277         unsigned long setup_addr = USBREQ;
278         u16 intsts1;
279         int timeout = 3000;
280         u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
281
282         r8a66597_write(r8a66597, make_devsel(devsel) |
283                                  (8 << dev->maxpacketsize), DCPMAXP);
284         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
285
286         for (i = 0; i < 4; i++) {
287                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
288                 setup_addr += 2;
289         }
290         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
291         r8a66597_write(r8a66597, SUREQ, DCPCTR);
292
293         while (1) {
294                 intsts1 = r8a66597_read(r8a66597, INTSTS1);
295                 if (intsts1 & SACK)
296                         break;
297                 if (intsts1 & SIGN) {
298                         printf("setup packet send error\n");
299                         return -1;
300                 }
301                 if (timeout-- < 0) {
302                         printf("setup packet timeout\n");
303                         return -1;
304                 }
305                 udelay(500);
306         }
307
308         return 0;
309 }
310
311 static int send_bulk_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
312                             unsigned long pipe, void *buffer, int transfer_len)
313 {
314         u16 tmp, bufsize;
315         u16 *buf;
316         size_t size;
317
318         R8A66597_DPRINT("%s\n", __func__);
319
320         r8a66597_mdfy(r8a66597, MBW | BULK_OUT_PIPENUM,
321                         MBW | CURPIPE, CFIFOSEL);
322         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, BULK_OUT_PIPENUM);
323         tmp = r8a66597_read(r8a66597, CFIFOCTR);
324         if ((tmp & FRDY) == 0) {
325                 printf("%s FRDY is not set (%x)\n", __func__, tmp);
326                 return -1;
327         }
328
329         /* prepare parameters */
330         bufsize = dev->epmaxpacketout[usb_pipeendpoint(pipe)];
331         buf = (u16 *)(buffer + dev->act_len);
332         size = min((int)bufsize, transfer_len - dev->act_len);
333
334         /* write fifo */
335         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
336         if (buffer) {
337                 r8a66597_write_fifo(r8a66597, CFIFO, buf, size);
338                 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
339         }
340
341         /* update parameters */
342         dev->act_len += size;
343
344         r8a66597_mdfy(r8a66597, PID_BUF, PID,
345                         get_pipectr_addr(BULK_OUT_PIPENUM));
346
347         while (!(r8a66597_read(r8a66597, BEMPSTS) & (1 << BULK_OUT_PIPENUM)))
348                 if (ctrlc())
349                         return -1;
350         r8a66597_write(r8a66597, ~(1 << BULK_OUT_PIPENUM), BEMPSTS);
351
352         if (dev->act_len >= transfer_len)
353                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
354                                 get_pipectr_addr(BULK_OUT_PIPENUM));
355
356         return 0;
357 }
358
359 static int receive_bulk_packet(struct r8a66597 *r8a66597,
360                                struct usb_device *dev,
361                                unsigned long pipe,
362                                void *buffer, int transfer_len)
363 {
364         u16 tmp;
365         u16 *buf;
366         const u16 pipenum = BULK_IN_PIPENUM;
367         int rcv_len;
368         int maxpacket = dev->epmaxpacketin[usb_pipeendpoint(pipe)];
369
370         R8A66597_DPRINT("%s\n", __func__);
371
372         /* prepare */
373         if (dev->act_len == 0) {
374                 r8a66597_mdfy(r8a66597, PID_NAK, PID,
375                                 get_pipectr_addr(pipenum));
376                 r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
377
378                 r8a66597_write(r8a66597, TRCLR, get_pipetre_addr(pipenum));
379                 r8a66597_write(r8a66597,
380                                 (transfer_len + maxpacket - 1) / maxpacket,
381                                 get_pipetrn_addr(pipenum));
382                 r8a66597_bset(r8a66597, TRENB, get_pipetre_addr(pipenum));
383
384                 r8a66597_mdfy(r8a66597, PID_BUF, PID,
385                                 get_pipectr_addr(pipenum));
386         }
387
388         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
389         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
390
391         while (!(r8a66597_read(r8a66597, BRDYSTS) & (1 << pipenum)))
392                 if (ctrlc())
393                         return -1;
394         r8a66597_write(r8a66597, ~(1 << pipenum), BRDYSTS);
395
396         tmp = r8a66597_read(r8a66597, CFIFOCTR);
397         if ((tmp & FRDY) == 0) {
398                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
399                 return -1;
400         }
401
402         buf = (u16 *)(buffer + dev->act_len);
403         rcv_len = tmp & DTLN;
404         dev->act_len += rcv_len;
405
406         if (buffer) {
407                 if (rcv_len == 0)
408                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
409                 else
410                         r8a66597_read_fifo(r8a66597, CFIFO, buf, rcv_len);
411         }
412
413         return 0;
414 }
415
416 static int receive_control_packet(struct r8a66597 *r8a66597,
417                                   struct usb_device *dev,
418                                   void *buffer, int transfer_len)
419 {
420         u16 tmp;
421         int rcv_len;
422
423         /* FIXME: limit transfer size : 64byte or less */
424
425         r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
426         r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
427         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
428         r8a66597_bset(r8a66597, SQSET, DCPCTR);
429         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
430         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
431
432         while (!(r8a66597_read(r8a66597, BRDYSTS) & 0x0001))
433                 if (ctrlc())
434                         return -1;
435         r8a66597_write(r8a66597, ~0x0001, BRDYSTS);
436
437         r8a66597_mdfy(r8a66597, MBW, MBW | CURPIPE, CFIFOSEL);
438         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
439
440         tmp = r8a66597_read(r8a66597, CFIFOCTR);
441         if ((tmp & FRDY) == 0) {
442                 printf("%s FRDY is not set. (%x)\n", __func__, tmp);
443                 return -1;
444         }
445
446         rcv_len = tmp & DTLN;
447         dev->act_len += rcv_len;
448
449         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
450
451         if (buffer) {
452                 if (rcv_len == 0)
453                         r8a66597_write(r8a66597, BCLR, DCPCTR);
454                 else
455                         r8a66597_read_fifo(r8a66597, CFIFO, buffer, rcv_len);
456         }
457
458         return 0;
459 }
460
461 static int send_status_packet(struct r8a66597 *r8a66597,
462                                unsigned long pipe)
463 {
464         r8a66597_bset(r8a66597, SQSET, DCPCTR);
465         r8a66597_mdfy(r8a66597, PID_NAK, PID, DCPCTR);
466
467         if (usb_pipein(pipe)) {
468                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
469                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
470                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
471                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
472                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
473         } else {
474                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
475                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
476                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
477                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
478         }
479         r8a66597_mdfy(r8a66597, PID_BUF, PID, DCPCTR);
480
481         while (!(r8a66597_read(r8a66597, BEMPSTS) & 0x0001))
482                 if (ctrlc())
483                         return -1;
484
485         return 0;
486 }
487
488 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port)
489 {
490         int count = R8A66597_MAX_SAMPLING;
491         unsigned short syssts, old_syssts;
492
493         R8A66597_DPRINT("%s\n", __func__);
494
495         old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
496         while (count > 0) {
497                 mdelay(R8A66597_RH_POLL_TIME);
498
499                 syssts = r8a66597_read(r8a66597, get_syssts_reg(port) & LNST);
500                 if (syssts == old_syssts) {
501                         count--;
502                 } else {
503                         count = R8A66597_MAX_SAMPLING;
504                         old_syssts = syssts;
505                 }
506         }
507 }
508
509 static void r8a66597_bus_reset(struct r8a66597 *r8a66597, int port)
510 {
511         mdelay(10);
512         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT, get_dvstctr_reg(port));
513         mdelay(50);
514         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT, get_dvstctr_reg(port));
515         mdelay(50);
516 }
517
518 static int check_usb_device_connecting(struct r8a66597 *r8a66597)
519 {
520         int timeout = 10000;    /* 100usec * 10000 = 1sec */
521         int i;
522
523         for (i = 0; i < 5; i++) {
524                 /* check a usb cable connect */
525                 while (!(r8a66597_read(r8a66597, INTSTS1) & ATTCH)) {
526                         if (timeout-- < 0) {
527                                 printf("%s timeout.\n", __func__);
528                                 return -1;
529                         }
530                         udelay(100);
531                 }
532
533                 /* check a data line */
534                 r8a66597_check_syssts(r8a66597, 0);
535
536                 r8a66597_bus_reset(r8a66597, 0);
537                 r8a66597->speed = get_rh_usb_speed(r8a66597, 0);
538
539                 if (!(r8a66597_read(r8a66597, INTSTS1) & DTCH)) {
540                         r8a66597->port_change = USB_PORT_STAT_C_CONNECTION;
541                         r8a66597->port_status = USB_PORT_STAT_CONNECTION |
542                                                 USB_PORT_STAT_ENABLE;
543                         return 0;       /* success */
544                 }
545
546                 R8A66597_DPRINT("USB device has detached. retry = %d\n", i);
547                 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
548         }
549
550         return -1;      /* fail */
551 }
552
553 /*-------------------------------------------------------------------------*
554  * Virtual Root Hub
555  *-------------------------------------------------------------------------*/
556
557 #include <usbroothubdes.h>
558
559 static int r8a66597_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
560                         void *buffer, int transfer_len, struct devrequest *cmd)
561 {
562         struct r8a66597 *r8a66597 = &gr8a66597;
563         int leni = transfer_len;
564         int len = 0;
565         int stat = 0;
566         __u16 bmRType_bReq;
567         __u16 wValue;
568         __u16 wLength;
569         unsigned char data[32];
570
571         R8A66597_DPRINT("%s\n", __func__);
572
573         if (usb_pipeint(pipe)) {
574                 printf("Root-Hub submit IRQ: NOT implemented");
575                 return 0;
576         }
577
578         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
579         wValue        = cpu_to_le16 (cmd->value);
580         wLength       = cpu_to_le16 (cmd->length);
581
582         switch (bmRType_bReq) {
583         case RH_GET_STATUS:
584                 *(__u16 *)buffer = cpu_to_le16(1);
585                 len = 2;
586                 break;
587         case RH_GET_STATUS | RH_INTERFACE:
588                 *(__u16 *)buffer = cpu_to_le16(0);
589                 len = 2;
590                 break;
591         case RH_GET_STATUS | RH_ENDPOINT:
592                 *(__u16 *)buffer = cpu_to_le16(0);
593                 len = 2;
594                 break;
595         case RH_GET_STATUS | RH_CLASS:
596                 *(__u32 *)buffer = cpu_to_le32(0);
597                 len = 4;
598                 break;
599         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
600                 *(__u32 *)buffer = cpu_to_le32(r8a66597->port_status |
601                                                 (r8a66597->port_change << 16));
602                 len = 4;
603                 break;
604         case RH_CLEAR_FEATURE | RH_ENDPOINT:
605         case RH_CLEAR_FEATURE | RH_CLASS:
606                 break;
607
608         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
609                 switch (wValue) {
610                 case RH_C_PORT_CONNECTION:
611                         r8a66597->port_change &= ~USB_PORT_STAT_C_CONNECTION;
612                         break;
613                 }
614                 break;
615
616         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
617                 switch (wValue) {
618                 case (RH_PORT_SUSPEND):
619                         break;
620                 case (RH_PORT_RESET):
621                         r8a66597_bus_reset(r8a66597, 0);
622                         break;
623                 case (RH_PORT_POWER):
624                         break;
625                 case (RH_PORT_ENABLE):
626                         break;
627                 }
628                 break;
629         case RH_SET_ADDRESS:
630                 gr8a66597.rh_devnum = wValue;
631                 break;
632         case RH_GET_DESCRIPTOR:
633                 switch ((wValue & 0xff00) >> 8) {
634                 case (0x01): /* device descriptor */
635                         len = min_t(unsigned int,
636                                   leni,
637                                   min_t(unsigned int,
638                                       sizeof(root_hub_dev_des),
639                                       wLength));
640                         memcpy(buffer, root_hub_dev_des, len);
641                         break;
642                 case (0x02): /* configuration descriptor */
643                         len = min_t(unsigned int,
644                                   leni,
645                                   min_t(unsigned int,
646                                       sizeof(root_hub_config_des),
647                                       wLength));
648                         memcpy(buffer, root_hub_config_des, len);
649                         break;
650                 case (0x03): /* string descriptors */
651                         if (wValue == 0x0300) {
652                                 len = min_t(unsigned int,
653                                           leni,
654                                           min_t(unsigned int,
655                                               sizeof(root_hub_str_index0),
656                                               wLength));
657                                 memcpy(buffer, root_hub_str_index0, len);
658                         }
659                         if (wValue == 0x0301) {
660                                 len = min_t(unsigned int,
661                                           leni,
662                                           min_t(unsigned int,
663                                               sizeof(root_hub_str_index1),
664                                               wLength));
665                                 memcpy(buffer, root_hub_str_index1, len);
666                         }
667                         break;
668                 default:
669                         stat = USB_ST_STALLED;
670                 }
671                 break;
672
673         case RH_GET_DESCRIPTOR | RH_CLASS:
674         {
675                 __u32 temp = 0x00000001;
676
677                 data[0] = 9;            /* min length; */
678                 data[1] = 0x29;
679                 data[2] = temp & RH_A_NDP;
680                 data[3] = 0;
681                 if (temp & RH_A_PSM)
682                         data[3] |= 0x1;
683                 if (temp & RH_A_NOCP)
684                         data[3] |= 0x10;
685                 else if (temp & RH_A_OCPM)
686                         data[3] |= 0x8;
687
688                 /* corresponds to data[4-7] */
689                 data[5] = (temp & RH_A_POTPGT) >> 24;
690                 data[7] = temp & RH_B_DR;
691                 if (data[2] < 7) {
692                         data[8] = 0xff;
693                 } else {
694                         data[0] += 2;
695                         data[8] = (temp & RH_B_DR) >> 8;
696                         data[10] = data[9] = 0xff;
697                 }
698
699                 len = min_t(unsigned int, leni,
700                             min_t(unsigned int, data[0], wLength));
701                 memcpy(buffer, data, len);
702                 break;
703         }
704
705         case RH_GET_CONFIGURATION:
706                 *(__u8 *) buffer = 0x01;
707                 len = 1;
708                 break;
709         case RH_SET_CONFIGURATION:
710                 break;
711         default:
712                 R8A66597_DPRINT("unsupported root hub command");
713                 stat = USB_ST_STALLED;
714         }
715
716         mdelay(1);
717
718         len = min_t(int, len, leni);
719
720         dev->act_len = len;
721         dev->status = stat;
722
723         return stat;
724 }
725
726 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
727                     int transfer_len)
728 {
729         struct r8a66597 *r8a66597 = &gr8a66597;
730         int ret = 0;
731
732         R8A66597_DPRINT("%s\n", __func__);
733         R8A66597_DPRINT("pipe = %08x, buffer = %p, len = %d, devnum = %d\n",
734                         pipe, buffer, transfer_len, dev->devnum);
735
736         set_devadd(r8a66597, dev->devnum, dev, 0);
737
738         pipe_buffer_setting(r8a66597, dev, pipe);
739
740         dev->act_len = 0;
741         while (dev->act_len < transfer_len && ret == 0) {
742                 if (ctrlc())
743                         return -1;
744
745                 if (usb_pipein(pipe))
746                         ret = receive_bulk_packet(r8a66597, dev, pipe, buffer,
747                                                         transfer_len);
748                 else
749                         ret = send_bulk_packet(r8a66597, dev, pipe, buffer,
750                                                         transfer_len);
751         }
752
753         if (ret == 0)
754                 dev->status = 0;
755
756         return ret;
757 }
758
759 int submit_control_msg(struct usb_device *dev, unsigned long pipe,
760                        void *buffer, int transfer_len, struct devrequest *setup)
761 {
762         struct r8a66597 *r8a66597 = &gr8a66597;
763         u16 r8a66597_address = setup->request == USB_REQ_SET_ADDRESS ?
764                                         0 : dev->devnum;
765
766         R8A66597_DPRINT("%s\n", __func__);
767         if (usb_pipedevice(pipe) == r8a66597->rh_devnum)
768                 return r8a66597_submit_rh_msg(dev, pipe, buffer, transfer_len,
769                                                 setup);
770
771         R8A66597_DPRINT("%s: setup\n", __func__);
772         set_devadd(r8a66597, r8a66597_address, dev, 0);
773
774         if (send_setup_packet(r8a66597, dev, setup) < 0) {
775                 printf("setup packet send error\n");
776                 return -1;
777         }
778
779         dev->act_len = 0;
780         if (usb_pipein(pipe))
781                 if (receive_control_packet(r8a66597, dev, buffer,
782                                                 transfer_len) < 0)
783                         return -1;
784
785         if (send_status_packet(r8a66597, pipe) < 0)
786                 return -1;
787
788         dev->status = 0;
789
790         return 0;
791 }
792
793 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
794                         int transfer_len, int interval)
795 {
796         /* no implement */
797         R8A66597_DPRINT("%s\n", __func__);
798         return 0;
799 }
800
801 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
802 {
803         struct r8a66597 *r8a66597 = &gr8a66597;
804
805         R8A66597_DPRINT("%s\n", __func__);
806
807         memset(r8a66597, 0, sizeof(*r8a66597));
808         r8a66597->reg = CONFIG_R8A66597_BASE_ADDR;
809
810         disable_controller(r8a66597);
811         mdelay(100);
812
813         enable_controller(r8a66597);
814         r8a66597_port_power(r8a66597, 0 , 1);
815
816         /* check usb device */
817         check_usb_device_connecting(r8a66597);
818
819         mdelay(50);
820
821         return 0;
822 }
823
824 int usb_lowlevel_stop(int index)
825 {
826         disable_controller(&gr8a66597);
827
828         return 0;
829 }