diff options
author | Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> | 2009-08-19 00:59:39 -0400 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-19 21:25:30 -0400 |
commit | c41442474a26984abaa094e96e42182868eab658 (patch) | |
tree | 729f53db686fe5539f07e9aec623936e686f8ab9 /drivers/usb/gadget/r8a66597-udc.h | |
parent | 24d76195d124986b7702821b8b6cc85942b13146 (diff) |
usb: gadget: R8A66597 peripheral controller support.
While in-tree support for the R8A66597 host side has been supported for
some time, the peripheral side has so far been unsupported. This adds a
new USB gadget driver which bridges the gap and finally wires up the
peripheral side as well.
Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Tested-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/usb/gadget/r8a66597-udc.h')
-rw-r--r-- | drivers/usb/gadget/r8a66597-udc.h | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h new file mode 100644 index 000000000000..a2464bf337c8 --- /dev/null +++ b/drivers/usb/gadget/r8a66597-udc.h | |||
@@ -0,0 +1,249 @@ | |||
1 | /* | ||
2 | * R8A66597 UDC | ||
3 | * | ||
4 | * Copyright (C) 2007-2009 Renesas Solutions Corp. | ||
5 | * | ||
6 | * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> | ||
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 as published by | ||
10 | * the Free Software Foundation; version 2 of the License. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program; if not, write to the Free Software | ||
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
20 | * | ||
21 | */ | ||
22 | |||
23 | #ifndef __R8A66597_H__ | ||
24 | #define __R8A66597_H__ | ||
25 | |||
26 | #include <linux/usb/r8a66597.h> | ||
27 | |||
28 | #define R8A66597_MAX_SAMPLING 10 | ||
29 | |||
30 | #define R8A66597_MAX_NUM_PIPE 8 | ||
31 | #define R8A66597_MAX_NUM_BULK 3 | ||
32 | #define R8A66597_MAX_NUM_ISOC 2 | ||
33 | #define R8A66597_MAX_NUM_INT 2 | ||
34 | |||
35 | #define R8A66597_BASE_PIPENUM_BULK 3 | ||
36 | #define R8A66597_BASE_PIPENUM_ISOC 1 | ||
37 | #define R8A66597_BASE_PIPENUM_INT 6 | ||
38 | |||
39 | #define R8A66597_BASE_BUFNUM 6 | ||
40 | #define R8A66597_MAX_BUFNUM 0x4F | ||
41 | |||
42 | #define is_bulk_pipe(pipenum) \ | ||
43 | ((pipenum >= R8A66597_BASE_PIPENUM_BULK) && \ | ||
44 | (pipenum < (R8A66597_BASE_PIPENUM_BULK + R8A66597_MAX_NUM_BULK))) | ||
45 | #define is_interrupt_pipe(pipenum) \ | ||
46 | ((pipenum >= R8A66597_BASE_PIPENUM_INT) && \ | ||
47 | (pipenum < (R8A66597_BASE_PIPENUM_INT + R8A66597_MAX_NUM_INT))) | ||
48 | #define is_isoc_pipe(pipenum) \ | ||
49 | ((pipenum >= R8A66597_BASE_PIPENUM_ISOC) && \ | ||
50 | (pipenum < (R8A66597_BASE_PIPENUM_ISOC + R8A66597_MAX_NUM_ISOC))) | ||
51 | |||
52 | struct r8a66597_pipe_info { | ||
53 | u16 pipe; | ||
54 | u16 epnum; | ||
55 | u16 maxpacket; | ||
56 | u16 type; | ||
57 | u16 interval; | ||
58 | u16 dir_in; | ||
59 | }; | ||
60 | |||
61 | struct r8a66597_request { | ||
62 | struct usb_request req; | ||
63 | struct list_head queue; | ||
64 | }; | ||
65 | |||
66 | struct r8a66597_ep { | ||
67 | struct usb_ep ep; | ||
68 | struct r8a66597 *r8a66597; | ||
69 | |||
70 | struct list_head queue; | ||
71 | unsigned busy:1; | ||
72 | unsigned internal_ccpl:1; /* use only control */ | ||
73 | |||
74 | /* this member can able to after r8a66597_enable */ | ||
75 | unsigned use_dma:1; | ||
76 | u16 pipenum; | ||
77 | u16 type; | ||
78 | const struct usb_endpoint_descriptor *desc; | ||
79 | /* register address */ | ||
80 | unsigned char fifoaddr; | ||
81 | unsigned char fifosel; | ||
82 | unsigned char fifoctr; | ||
83 | unsigned char fifotrn; | ||
84 | unsigned char pipectr; | ||
85 | }; | ||
86 | |||
87 | struct r8a66597 { | ||
88 | spinlock_t lock; | ||
89 | unsigned long reg; | ||
90 | |||
91 | struct r8a66597_platdata *pdata; | ||
92 | |||
93 | struct usb_gadget gadget; | ||
94 | struct usb_gadget_driver *driver; | ||
95 | |||
96 | struct r8a66597_ep ep[R8A66597_MAX_NUM_PIPE]; | ||
97 | struct r8a66597_ep *pipenum2ep[R8A66597_MAX_NUM_PIPE]; | ||
98 | struct r8a66597_ep *epaddr2ep[16]; | ||
99 | |||
100 | struct timer_list timer; | ||
101 | struct usb_request *ep0_req; /* for internal request */ | ||
102 | u16 ep0_data; /* for internal request */ | ||
103 | u16 old_vbus; | ||
104 | u16 scount; | ||
105 | u16 old_dvsq; | ||
106 | |||
107 | /* pipe config */ | ||
108 | unsigned short bi_bufnum; /* bulk and isochronous's bufnum */ | ||
109 | unsigned char bulk; | ||
110 | unsigned char interrupt; | ||
111 | unsigned char isochronous; | ||
112 | unsigned char num_dma; | ||
113 | |||
114 | unsigned irq_sense_low:1; | ||
115 | }; | ||
116 | |||
117 | #define gadget_to_r8a66597(_gadget) \ | ||
118 | container_of(_gadget, struct r8a66597, gadget) | ||
119 | #define r8a66597_to_gadget(r8a66597) (&r8a66597->gadget) | ||
120 | |||
121 | static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset) | ||
122 | { | ||
123 | return inw(r8a66597->reg + offset); | ||
124 | } | ||
125 | |||
126 | static inline void r8a66597_read_fifo(struct r8a66597 *r8a66597, | ||
127 | unsigned long offset, u16 *buf, | ||
128 | int len) | ||
129 | { | ||
130 | if (r8a66597->pdata->on_chip) { | ||
131 | unsigned long fifoaddr = r8a66597->reg + offset; | ||
132 | unsigned long count; | ||
133 | union { | ||
134 | unsigned long dword; | ||
135 | unsigned char byte[4]; | ||
136 | } data; | ||
137 | unsigned char *pb; | ||
138 | int i; | ||
139 | |||
140 | count = len / 4; | ||
141 | insl(fifoaddr, buf, count); | ||
142 | |||
143 | if (len & 0x00000003) { | ||
144 | data.dword = inl(fifoaddr); | ||
145 | pb = (unsigned char *)buf + count * 4; | ||
146 | for (i = 0; i < (len & 0x00000003); i++) | ||
147 | pb[i] = data.byte[i]; | ||
148 | } | ||
149 | } else { | ||
150 | len = (len + 1) / 2; | ||
151 | insw(r8a66597->reg + offset, buf, len); | ||
152 | } | ||
153 | } | ||
154 | |||
155 | static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val, | ||
156 | unsigned long offset) | ||
157 | { | ||
158 | outw(val, r8a66597->reg + offset); | ||
159 | } | ||
160 | |||
161 | static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597, | ||
162 | unsigned long offset, u16 *buf, | ||
163 | int len) | ||
164 | { | ||
165 | unsigned long fifoaddr = r8a66597->reg + offset; | ||
166 | |||
167 | if (r8a66597->pdata->on_chip) { | ||
168 | unsigned long count; | ||
169 | unsigned char *pb; | ||
170 | int i; | ||
171 | |||
172 | count = len / 4; | ||
173 | outsl(fifoaddr, buf, count); | ||
174 | |||
175 | if (len & 0x00000003) { | ||
176 | pb = (unsigned char *)buf + count * 4; | ||
177 | for (i = 0; i < (len & 0x00000003); i++) { | ||
178 | if (r8a66597_read(r8a66597, CFIFOSEL) & BIGEND) | ||
179 | outb(pb[i], fifoaddr + i); | ||
180 | else | ||
181 | outb(pb[i], fifoaddr + 3 - i); | ||
182 | } | ||
183 | } | ||
184 | } else { | ||
185 | int odd = len & 0x0001; | ||
186 | |||
187 | len = len / 2; | ||
188 | outsw(fifoaddr, buf, len); | ||
189 | if (unlikely(odd)) { | ||
190 | buf = &buf[len]; | ||
191 | outb((unsigned char)*buf, fifoaddr); | ||
192 | } | ||
193 | } | ||
194 | } | ||
195 | |||
196 | static inline void r8a66597_mdfy(struct r8a66597 *r8a66597, | ||
197 | u16 val, u16 pat, unsigned long offset) | ||
198 | { | ||
199 | u16 tmp; | ||
200 | tmp = r8a66597_read(r8a66597, offset); | ||
201 | tmp = tmp & (~pat); | ||
202 | tmp = tmp | val; | ||
203 | r8a66597_write(r8a66597, tmp, offset); | ||
204 | } | ||
205 | |||
206 | static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata) | ||
207 | { | ||
208 | u16 clock = 0; | ||
209 | |||
210 | switch (pdata->xtal) { | ||
211 | case R8A66597_PLATDATA_XTAL_12MHZ: | ||
212 | clock = XTAL12; | ||
213 | break; | ||
214 | case R8A66597_PLATDATA_XTAL_24MHZ: | ||
215 | clock = XTAL24; | ||
216 | break; | ||
217 | case R8A66597_PLATDATA_XTAL_48MHZ: | ||
218 | clock = XTAL48; | ||
219 | break; | ||
220 | default: | ||
221 | printk(KERN_ERR "r8a66597: platdata clock is wrong.\n"); | ||
222 | break; | ||
223 | } | ||
224 | |||
225 | return clock; | ||
226 | } | ||
227 | |||
228 | #define r8a66597_bclr(r8a66597, val, offset) \ | ||
229 | r8a66597_mdfy(r8a66597, 0, val, offset) | ||
230 | #define r8a66597_bset(r8a66597, val, offset) \ | ||
231 | r8a66597_mdfy(r8a66597, val, 0, offset) | ||
232 | |||
233 | #define get_pipectr_addr(pipenum) (PIPE1CTR + (pipenum - 1) * 2) | ||
234 | |||
235 | #define enable_irq_ready(r8a66597, pipenum) \ | ||
236 | enable_pipe_irq(r8a66597, pipenum, BRDYENB) | ||
237 | #define disable_irq_ready(r8a66597, pipenum) \ | ||
238 | disable_pipe_irq(r8a66597, pipenum, BRDYENB) | ||
239 | #define enable_irq_empty(r8a66597, pipenum) \ | ||
240 | enable_pipe_irq(r8a66597, pipenum, BEMPENB) | ||
241 | #define disable_irq_empty(r8a66597, pipenum) \ | ||
242 | disable_pipe_irq(r8a66597, pipenum, BEMPENB) | ||
243 | #define enable_irq_nrdy(r8a66597, pipenum) \ | ||
244 | enable_pipe_irq(r8a66597, pipenum, NRDYENB) | ||
245 | #define disable_irq_nrdy(r8a66597, pipenum) \ | ||
246 | disable_pipe_irq(r8a66597, pipenum, NRDYENB) | ||
247 | |||
248 | #endif /* __R8A66597_H__ */ | ||
249 | |||