Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1 | /* |
| 2 | * M66592 UDC (USB gadget) |
| 3 | * |
| 4 | * Copyright (C) 2006-2007 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 | #include <linux/module.h> |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 24 | #include <linux/interrupt.h> |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 25 | #include <linux/delay.h> |
| 26 | #include <linux/io.h> |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 27 | #include <linux/platform_device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Paul Mundt | 56fd126 | 2009-08-24 22:45:15 +0900 | [diff] [blame] | 29 | #include <linux/err.h> |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 30 | #include <linux/usb/ch9.h> |
David Brownell | 9454a57 | 2007-10-04 18:05:17 -0700 | [diff] [blame] | 31 | #include <linux/usb/gadget.h> |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 32 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 33 | #include "m66592-udc.h" |
| 34 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 35 | MODULE_DESCRIPTION("M66592 USB gadget driver"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 36 | MODULE_LICENSE("GPL"); |
| 37 | MODULE_AUTHOR("Yoshihiro Shimoda"); |
Kay Sievers | f34c32f | 2008-04-10 21:29:21 -0700 | [diff] [blame] | 38 | MODULE_ALIAS("platform:m66592_udc"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 39 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 40 | #define DRIVER_VERSION "21 July 2009" |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 41 | |
| 42 | static const char udc_name[] = "m66592_udc"; |
| 43 | static const char *m66592_ep_name[] = { |
| 44 | "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7" |
| 45 | }; |
| 46 | |
| 47 | static void disable_controller(struct m66592 *m66592); |
| 48 | static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req); |
| 49 | static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req); |
| 50 | static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 51 | gfp_t gfp_flags); |
| 52 | |
| 53 | static void transfer_complete(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 54 | struct m66592_request *req, int status); |
| 55 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 56 | /*-------------------------------------------------------------------------*/ |
| 57 | static inline u16 get_usb_speed(struct m66592 *m66592) |
| 58 | { |
| 59 | return (m66592_read(m66592, M66592_DVSTCTR) & M66592_RHST); |
| 60 | } |
| 61 | |
| 62 | static void enable_pipe_irq(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 63 | unsigned long reg) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 64 | { |
| 65 | u16 tmp; |
| 66 | |
| 67 | tmp = m66592_read(m66592, M66592_INTENB0); |
| 68 | m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 69 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 70 | m66592_bset(m66592, (1 << pipenum), reg); |
| 71 | m66592_write(m66592, tmp, M66592_INTENB0); |
| 72 | } |
| 73 | |
| 74 | static void disable_pipe_irq(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 75 | unsigned long reg) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 76 | { |
| 77 | u16 tmp; |
| 78 | |
| 79 | tmp = m66592_read(m66592, M66592_INTENB0); |
| 80 | m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 81 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 82 | m66592_bclr(m66592, (1 << pipenum), reg); |
| 83 | m66592_write(m66592, tmp, M66592_INTENB0); |
| 84 | } |
| 85 | |
| 86 | static void m66592_usb_connect(struct m66592 *m66592) |
| 87 | { |
| 88 | m66592_bset(m66592, M66592_CTRE, M66592_INTENB0); |
| 89 | m66592_bset(m66592, M66592_WDST | M66592_RDST | M66592_CMPL, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 90 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 91 | m66592_bset(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0); |
| 92 | |
| 93 | m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 94 | } |
| 95 | |
| 96 | static void m66592_usb_disconnect(struct m66592 *m66592) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 97 | __releases(m66592->lock) |
| 98 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 99 | { |
| 100 | m66592_bclr(m66592, M66592_CTRE, M66592_INTENB0); |
| 101 | m66592_bclr(m66592, M66592_WDST | M66592_RDST | M66592_CMPL, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 102 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 103 | m66592_bclr(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0); |
| 104 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 105 | |
| 106 | m66592->gadget.speed = USB_SPEED_UNKNOWN; |
| 107 | spin_unlock(&m66592->lock); |
| 108 | m66592->driver->disconnect(&m66592->gadget); |
| 109 | spin_lock(&m66592->lock); |
| 110 | |
| 111 | disable_controller(m66592); |
| 112 | INIT_LIST_HEAD(&m66592->ep[0].queue); |
| 113 | } |
| 114 | |
| 115 | static inline u16 control_reg_get_pid(struct m66592 *m66592, u16 pipenum) |
| 116 | { |
| 117 | u16 pid = 0; |
| 118 | unsigned long offset; |
| 119 | |
| 120 | if (pipenum == 0) |
| 121 | pid = m66592_read(m66592, M66592_DCPCTR) & M66592_PID; |
| 122 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 123 | offset = get_pipectr_addr(pipenum); |
| 124 | pid = m66592_read(m66592, offset) & M66592_PID; |
| 125 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 126 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 127 | |
| 128 | return pid; |
| 129 | } |
| 130 | |
| 131 | static inline void control_reg_set_pid(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 132 | u16 pid) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 133 | { |
| 134 | unsigned long offset; |
| 135 | |
| 136 | if (pipenum == 0) |
| 137 | m66592_mdfy(m66592, pid, M66592_PID, M66592_DCPCTR); |
| 138 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 139 | offset = get_pipectr_addr(pipenum); |
| 140 | m66592_mdfy(m66592, pid, M66592_PID, offset); |
| 141 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 142 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | static inline void pipe_start(struct m66592 *m66592, u16 pipenum) |
| 146 | { |
| 147 | control_reg_set_pid(m66592, pipenum, M66592_PID_BUF); |
| 148 | } |
| 149 | |
| 150 | static inline void pipe_stop(struct m66592 *m66592, u16 pipenum) |
| 151 | { |
| 152 | control_reg_set_pid(m66592, pipenum, M66592_PID_NAK); |
| 153 | } |
| 154 | |
| 155 | static inline void pipe_stall(struct m66592 *m66592, u16 pipenum) |
| 156 | { |
| 157 | control_reg_set_pid(m66592, pipenum, M66592_PID_STALL); |
| 158 | } |
| 159 | |
| 160 | static inline u16 control_reg_get(struct m66592 *m66592, u16 pipenum) |
| 161 | { |
| 162 | u16 ret = 0; |
| 163 | unsigned long offset; |
| 164 | |
| 165 | if (pipenum == 0) |
| 166 | ret = m66592_read(m66592, M66592_DCPCTR); |
| 167 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 168 | offset = get_pipectr_addr(pipenum); |
| 169 | ret = m66592_read(m66592, offset); |
| 170 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 171 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 172 | |
| 173 | return ret; |
| 174 | } |
| 175 | |
| 176 | static inline void control_reg_sqclr(struct m66592 *m66592, u16 pipenum) |
| 177 | { |
| 178 | unsigned long offset; |
| 179 | |
| 180 | pipe_stop(m66592, pipenum); |
| 181 | |
| 182 | if (pipenum == 0) |
| 183 | m66592_bset(m66592, M66592_SQCLR, M66592_DCPCTR); |
| 184 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 185 | offset = get_pipectr_addr(pipenum); |
| 186 | m66592_bset(m66592, M66592_SQCLR, offset); |
| 187 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 188 | pr_err("unexpect pipe num(%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | static inline int get_buffer_size(struct m66592 *m66592, u16 pipenum) |
| 192 | { |
| 193 | u16 tmp; |
| 194 | int size; |
| 195 | |
| 196 | if (pipenum == 0) { |
| 197 | tmp = m66592_read(m66592, M66592_DCPCFG); |
| 198 | if ((tmp & M66592_CNTMD) != 0) |
| 199 | size = 256; |
| 200 | else { |
| 201 | tmp = m66592_read(m66592, M66592_DCPMAXP); |
| 202 | size = tmp & M66592_MAXP; |
| 203 | } |
| 204 | } else { |
| 205 | m66592_write(m66592, pipenum, M66592_PIPESEL); |
| 206 | tmp = m66592_read(m66592, M66592_PIPECFG); |
| 207 | if ((tmp & M66592_CNTMD) != 0) { |
| 208 | tmp = m66592_read(m66592, M66592_PIPEBUF); |
| 209 | size = ((tmp >> 10) + 1) * 64; |
| 210 | } else { |
| 211 | tmp = m66592_read(m66592, M66592_PIPEMAXP); |
| 212 | size = tmp & M66592_MXPS; |
| 213 | } |
| 214 | } |
| 215 | |
| 216 | return size; |
| 217 | } |
| 218 | |
| 219 | static inline void pipe_change(struct m66592 *m66592, u16 pipenum) |
| 220 | { |
| 221 | struct m66592_ep *ep = m66592->pipenum2ep[pipenum]; |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 222 | unsigned short mbw; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 223 | |
| 224 | if (ep->use_dma) |
| 225 | return; |
| 226 | |
| 227 | m66592_mdfy(m66592, pipenum, M66592_CURPIPE, ep->fifosel); |
| 228 | |
| 229 | ndelay(450); |
| 230 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 231 | if (m66592->pdata->on_chip) |
| 232 | mbw = M66592_MBW_32; |
| 233 | else |
| 234 | mbw = M66592_MBW_16; |
| 235 | |
| 236 | m66592_bset(m66592, mbw, ep->fifosel); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 237 | } |
| 238 | |
| 239 | static int pipe_buffer_setting(struct m66592 *m66592, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 240 | struct m66592_pipe_info *info) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 241 | { |
| 242 | u16 bufnum = 0, buf_bsize = 0; |
| 243 | u16 pipecfg = 0; |
| 244 | |
| 245 | if (info->pipe == 0) |
| 246 | return -EINVAL; |
| 247 | |
| 248 | m66592_write(m66592, info->pipe, M66592_PIPESEL); |
| 249 | |
| 250 | if (info->dir_in) |
| 251 | pipecfg |= M66592_DIR; |
| 252 | pipecfg |= info->type; |
| 253 | pipecfg |= info->epnum; |
| 254 | switch (info->type) { |
| 255 | case M66592_INT: |
| 256 | bufnum = 4 + (info->pipe - M66592_BASE_PIPENUM_INT); |
| 257 | buf_bsize = 0; |
| 258 | break; |
| 259 | case M66592_BULK: |
Magnus Damm | 4048e5c | 2009-06-26 06:59:17 +0000 | [diff] [blame] | 260 | /* isochronous pipes may be used as bulk pipes */ |
| 261 | if (info->pipe > M66592_BASE_PIPENUM_BULK) |
| 262 | bufnum = info->pipe - M66592_BASE_PIPENUM_BULK; |
| 263 | else |
| 264 | bufnum = info->pipe - M66592_BASE_PIPENUM_ISOC; |
| 265 | |
| 266 | bufnum = M66592_BASE_BUFNUM + (bufnum * 16); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 267 | buf_bsize = 7; |
| 268 | pipecfg |= M66592_DBLB; |
| 269 | if (!info->dir_in) |
| 270 | pipecfg |= M66592_SHTNAK; |
| 271 | break; |
| 272 | case M66592_ISO: |
Magnus Damm | 4048e5c | 2009-06-26 06:59:17 +0000 | [diff] [blame] | 273 | bufnum = M66592_BASE_BUFNUM + |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 274 | (info->pipe - M66592_BASE_PIPENUM_ISOC) * 16; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 275 | buf_bsize = 7; |
| 276 | break; |
| 277 | } |
Magnus Damm | 4048e5c | 2009-06-26 06:59:17 +0000 | [diff] [blame] | 278 | |
| 279 | if (buf_bsize && ((bufnum + 16) >= M66592_MAX_BUFNUM)) { |
| 280 | pr_err("m66592 pipe memory is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 281 | return -ENOMEM; |
| 282 | } |
| 283 | |
| 284 | m66592_write(m66592, pipecfg, M66592_PIPECFG); |
| 285 | m66592_write(m66592, (buf_bsize << 10) | (bufnum), M66592_PIPEBUF); |
| 286 | m66592_write(m66592, info->maxpacket, M66592_PIPEMAXP); |
| 287 | if (info->interval) |
| 288 | info->interval--; |
| 289 | m66592_write(m66592, info->interval, M66592_PIPEPERI); |
| 290 | |
| 291 | return 0; |
| 292 | } |
| 293 | |
| 294 | static void pipe_buffer_release(struct m66592 *m66592, |
| 295 | struct m66592_pipe_info *info) |
| 296 | { |
| 297 | if (info->pipe == 0) |
| 298 | return; |
| 299 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 300 | if (is_bulk_pipe(info->pipe)) { |
| 301 | m66592->bulk--; |
| 302 | } else if (is_interrupt_pipe(info->pipe)) |
| 303 | m66592->interrupt--; |
| 304 | else if (is_isoc_pipe(info->pipe)) { |
| 305 | m66592->isochronous--; |
| 306 | if (info->type == M66592_BULK) |
| 307 | m66592->bulk--; |
| 308 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 309 | pr_err("ep_release: unexpect pipenum (%d)\n", |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 310 | info->pipe); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | static void pipe_initialize(struct m66592_ep *ep) |
| 314 | { |
| 315 | struct m66592 *m66592 = ep->m66592; |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 316 | unsigned short mbw; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 317 | |
| 318 | m66592_mdfy(m66592, 0, M66592_CURPIPE, ep->fifosel); |
| 319 | |
| 320 | m66592_write(m66592, M66592_ACLRM, ep->pipectr); |
| 321 | m66592_write(m66592, 0, ep->pipectr); |
| 322 | m66592_write(m66592, M66592_SQCLR, ep->pipectr); |
| 323 | if (ep->use_dma) { |
| 324 | m66592_mdfy(m66592, ep->pipenum, M66592_CURPIPE, ep->fifosel); |
| 325 | |
| 326 | ndelay(450); |
| 327 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 328 | if (m66592->pdata->on_chip) |
| 329 | mbw = M66592_MBW_32; |
| 330 | else |
| 331 | mbw = M66592_MBW_16; |
| 332 | |
| 333 | m66592_bset(m66592, mbw, ep->fifosel); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 334 | } |
| 335 | } |
| 336 | |
| 337 | static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 338 | const struct usb_endpoint_descriptor *desc, |
| 339 | u16 pipenum, int dma) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 340 | { |
| 341 | if ((pipenum != 0) && dma) { |
| 342 | if (m66592->num_dma == 0) { |
| 343 | m66592->num_dma++; |
| 344 | ep->use_dma = 1; |
| 345 | ep->fifoaddr = M66592_D0FIFO; |
| 346 | ep->fifosel = M66592_D0FIFOSEL; |
| 347 | ep->fifoctr = M66592_D0FIFOCTR; |
| 348 | ep->fifotrn = M66592_D0FIFOTRN; |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 349 | } else if (!m66592->pdata->on_chip && m66592->num_dma == 1) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 350 | m66592->num_dma++; |
| 351 | ep->use_dma = 1; |
| 352 | ep->fifoaddr = M66592_D1FIFO; |
| 353 | ep->fifosel = M66592_D1FIFOSEL; |
| 354 | ep->fifoctr = M66592_D1FIFOCTR; |
| 355 | ep->fifotrn = M66592_D1FIFOTRN; |
| 356 | } else { |
| 357 | ep->use_dma = 0; |
| 358 | ep->fifoaddr = M66592_CFIFO; |
| 359 | ep->fifosel = M66592_CFIFOSEL; |
| 360 | ep->fifoctr = M66592_CFIFOCTR; |
| 361 | ep->fifotrn = 0; |
| 362 | } |
| 363 | } else { |
| 364 | ep->use_dma = 0; |
| 365 | ep->fifoaddr = M66592_CFIFO; |
| 366 | ep->fifosel = M66592_CFIFOSEL; |
| 367 | ep->fifoctr = M66592_CFIFOCTR; |
| 368 | ep->fifotrn = 0; |
| 369 | } |
| 370 | |
| 371 | ep->pipectr = get_pipectr_addr(pipenum); |
| 372 | ep->pipenum = pipenum; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 373 | ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 374 | m66592->pipenum2ep[pipenum] = ep; |
| 375 | m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep; |
| 376 | INIT_LIST_HEAD(&ep->queue); |
| 377 | } |
| 378 | |
| 379 | static void m66592_ep_release(struct m66592_ep *ep) |
| 380 | { |
| 381 | struct m66592 *m66592 = ep->m66592; |
| 382 | u16 pipenum = ep->pipenum; |
| 383 | |
| 384 | if (pipenum == 0) |
| 385 | return; |
| 386 | |
| 387 | if (ep->use_dma) |
| 388 | m66592->num_dma--; |
| 389 | ep->pipenum = 0; |
| 390 | ep->busy = 0; |
| 391 | ep->use_dma = 0; |
| 392 | } |
| 393 | |
| 394 | static int alloc_pipe_config(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 395 | const struct usb_endpoint_descriptor *desc) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 396 | { |
| 397 | struct m66592 *m66592 = ep->m66592; |
| 398 | struct m66592_pipe_info info; |
| 399 | int dma = 0; |
| 400 | int *counter; |
| 401 | int ret; |
| 402 | |
| 403 | ep->desc = desc; |
| 404 | |
| 405 | BUG_ON(ep->pipenum); |
| 406 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 407 | switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 408 | case USB_ENDPOINT_XFER_BULK: |
| 409 | if (m66592->bulk >= M66592_MAX_NUM_BULK) { |
| 410 | if (m66592->isochronous >= M66592_MAX_NUM_ISOC) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 411 | pr_err("bulk pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 412 | return -ENODEV; |
| 413 | } else { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 414 | info.pipe = M66592_BASE_PIPENUM_ISOC |
| 415 | + m66592->isochronous; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 416 | counter = &m66592->isochronous; |
| 417 | } |
| 418 | } else { |
| 419 | info.pipe = M66592_BASE_PIPENUM_BULK + m66592->bulk; |
| 420 | counter = &m66592->bulk; |
| 421 | } |
| 422 | info.type = M66592_BULK; |
| 423 | dma = 1; |
| 424 | break; |
| 425 | case USB_ENDPOINT_XFER_INT: |
| 426 | if (m66592->interrupt >= M66592_MAX_NUM_INT) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 427 | pr_err("interrupt pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 428 | return -ENODEV; |
| 429 | } |
| 430 | info.pipe = M66592_BASE_PIPENUM_INT + m66592->interrupt; |
| 431 | info.type = M66592_INT; |
| 432 | counter = &m66592->interrupt; |
| 433 | break; |
| 434 | case USB_ENDPOINT_XFER_ISOC: |
| 435 | if (m66592->isochronous >= M66592_MAX_NUM_ISOC) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 436 | pr_err("isochronous pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 437 | return -ENODEV; |
| 438 | } |
| 439 | info.pipe = M66592_BASE_PIPENUM_ISOC + m66592->isochronous; |
| 440 | info.type = M66592_ISO; |
| 441 | counter = &m66592->isochronous; |
| 442 | break; |
| 443 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 444 | pr_err("unexpect xfer type\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 445 | return -EINVAL; |
| 446 | } |
| 447 | ep->type = info.type; |
| 448 | |
| 449 | info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 450 | info.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 451 | info.interval = desc->bInterval; |
| 452 | if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) |
| 453 | info.dir_in = 1; |
| 454 | else |
| 455 | info.dir_in = 0; |
| 456 | |
| 457 | ret = pipe_buffer_setting(m66592, &info); |
| 458 | if (ret < 0) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 459 | pr_err("pipe_buffer_setting fail\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 460 | return ret; |
| 461 | } |
| 462 | |
| 463 | (*counter)++; |
| 464 | if ((counter == &m66592->isochronous) && info.type == M66592_BULK) |
| 465 | m66592->bulk++; |
| 466 | |
| 467 | m66592_ep_setting(m66592, ep, desc, info.pipe, dma); |
| 468 | pipe_initialize(ep); |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | static int free_pipe_config(struct m66592_ep *ep) |
| 474 | { |
| 475 | struct m66592 *m66592 = ep->m66592; |
| 476 | struct m66592_pipe_info info; |
| 477 | |
| 478 | info.pipe = ep->pipenum; |
| 479 | info.type = ep->type; |
| 480 | pipe_buffer_release(m66592, &info); |
| 481 | m66592_ep_release(ep); |
| 482 | |
| 483 | return 0; |
| 484 | } |
| 485 | |
| 486 | /*-------------------------------------------------------------------------*/ |
| 487 | static void pipe_irq_enable(struct m66592 *m66592, u16 pipenum) |
| 488 | { |
| 489 | enable_irq_ready(m66592, pipenum); |
| 490 | enable_irq_nrdy(m66592, pipenum); |
| 491 | } |
| 492 | |
| 493 | static void pipe_irq_disable(struct m66592 *m66592, u16 pipenum) |
| 494 | { |
| 495 | disable_irq_ready(m66592, pipenum); |
| 496 | disable_irq_nrdy(m66592, pipenum); |
| 497 | } |
| 498 | |
| 499 | /* if complete is true, gadget driver complete function is not call */ |
| 500 | static void control_end(struct m66592 *m66592, unsigned ccpl) |
| 501 | { |
| 502 | m66592->ep[0].internal_ccpl = ccpl; |
| 503 | pipe_start(m66592, 0); |
| 504 | m66592_bset(m66592, M66592_CCPL, M66592_DCPCTR); |
| 505 | } |
| 506 | |
| 507 | static void start_ep0_write(struct m66592_ep *ep, struct m66592_request *req) |
| 508 | { |
| 509 | struct m66592 *m66592 = ep->m66592; |
| 510 | |
| 511 | pipe_change(m66592, ep->pipenum); |
| 512 | m66592_mdfy(m66592, M66592_ISEL | M66592_PIPE0, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 513 | (M66592_ISEL | M66592_CURPIPE), |
| 514 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 515 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 516 | if (req->req.length == 0) { |
| 517 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 518 | pipe_start(m66592, 0); |
| 519 | transfer_complete(ep, req, 0); |
| 520 | } else { |
| 521 | m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS); |
| 522 | irq_ep0_write(ep, req); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | static void start_packet_write(struct m66592_ep *ep, struct m66592_request *req) |
| 527 | { |
| 528 | struct m66592 *m66592 = ep->m66592; |
| 529 | u16 tmp; |
| 530 | |
| 531 | pipe_change(m66592, ep->pipenum); |
| 532 | disable_irq_empty(m66592, ep->pipenum); |
| 533 | pipe_start(m66592, ep->pipenum); |
| 534 | |
| 535 | tmp = m66592_read(m66592, ep->fifoctr); |
| 536 | if (unlikely((tmp & M66592_FRDY) == 0)) |
| 537 | pipe_irq_enable(m66592, ep->pipenum); |
| 538 | else |
| 539 | irq_packet_write(ep, req); |
| 540 | } |
| 541 | |
| 542 | static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req) |
| 543 | { |
| 544 | struct m66592 *m66592 = ep->m66592; |
| 545 | u16 pipenum = ep->pipenum; |
| 546 | |
| 547 | if (ep->pipenum == 0) { |
| 548 | m66592_mdfy(m66592, M66592_PIPE0, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 549 | (M66592_ISEL | M66592_CURPIPE), |
| 550 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 551 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 552 | pipe_start(m66592, pipenum); |
| 553 | pipe_irq_enable(m66592, pipenum); |
| 554 | } else { |
| 555 | if (ep->use_dma) { |
| 556 | m66592_bset(m66592, M66592_TRCLR, ep->fifosel); |
| 557 | pipe_change(m66592, pipenum); |
| 558 | m66592_bset(m66592, M66592_TRENB, ep->fifosel); |
| 559 | m66592_write(m66592, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 560 | (req->req.length + ep->ep.maxpacket - 1) |
| 561 | / ep->ep.maxpacket, |
| 562 | ep->fifotrn); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 563 | } |
| 564 | pipe_start(m66592, pipenum); /* trigger once */ |
| 565 | pipe_irq_enable(m66592, pipenum); |
| 566 | } |
| 567 | } |
| 568 | |
| 569 | static void start_packet(struct m66592_ep *ep, struct m66592_request *req) |
| 570 | { |
| 571 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 572 | start_packet_write(ep, req); |
| 573 | else |
| 574 | start_packet_read(ep, req); |
| 575 | } |
| 576 | |
| 577 | static void start_ep0(struct m66592_ep *ep, struct m66592_request *req) |
| 578 | { |
| 579 | u16 ctsq; |
| 580 | |
| 581 | ctsq = m66592_read(ep->m66592, M66592_INTSTS0) & M66592_CTSQ; |
| 582 | |
| 583 | switch (ctsq) { |
| 584 | case M66592_CS_RDDS: |
| 585 | start_ep0_write(ep, req); |
| 586 | break; |
| 587 | case M66592_CS_WRDS: |
| 588 | start_packet_read(ep, req); |
| 589 | break; |
| 590 | |
| 591 | case M66592_CS_WRND: |
| 592 | control_end(ep->m66592, 0); |
| 593 | break; |
| 594 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 595 | pr_err("start_ep0: unexpect ctsq(%x)\n", ctsq); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 596 | break; |
| 597 | } |
| 598 | } |
| 599 | |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 600 | static void init_controller(struct m66592 *m66592) |
| 601 | { |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 602 | unsigned int endian; |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 603 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 604 | if (m66592->pdata->on_chip) { |
| 605 | if (m66592->pdata->endian) |
| 606 | endian = 0; /* big endian */ |
| 607 | else |
| 608 | endian = M66592_LITTLE; /* little endian */ |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 609 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 610 | m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */ |
| 611 | m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG); |
| 612 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 613 | m66592_bset(m66592, M66592_USBE, M66592_SYSCFG); |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 614 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 615 | /* This is a workaound for SH7722 2nd cut */ |
| 616 | m66592_bset(m66592, 0x8000, M66592_DVSTCTR); |
| 617 | m66592_bset(m66592, 0x1000, M66592_TESTMODE); |
| 618 | m66592_bclr(m66592, 0x8000, M66592_DVSTCTR); |
| 619 | |
| 620 | m66592_bset(m66592, M66592_INTL, M66592_INTENB1); |
| 621 | |
| 622 | m66592_write(m66592, 0, M66592_CFBCFG); |
| 623 | m66592_write(m66592, 0, M66592_D0FBCFG); |
| 624 | m66592_bset(m66592, endian, M66592_CFBCFG); |
| 625 | m66592_bset(m66592, endian, M66592_D0FBCFG); |
| 626 | } else { |
| 627 | unsigned int clock, vif, irq_sense; |
| 628 | |
| 629 | if (m66592->pdata->endian) |
| 630 | endian = M66592_BIGEND; /* big endian */ |
| 631 | else |
| 632 | endian = 0; /* little endian */ |
| 633 | |
| 634 | if (m66592->pdata->vif) |
| 635 | vif = M66592_LDRV; /* 3.3v */ |
| 636 | else |
| 637 | vif = 0; /* 1.5v */ |
| 638 | |
| 639 | switch (m66592->pdata->xtal) { |
| 640 | case M66592_PLATDATA_XTAL_12MHZ: |
| 641 | clock = M66592_XTAL12; |
| 642 | break; |
| 643 | case M66592_PLATDATA_XTAL_24MHZ: |
| 644 | clock = M66592_XTAL24; |
| 645 | break; |
| 646 | case M66592_PLATDATA_XTAL_48MHZ: |
| 647 | clock = M66592_XTAL48; |
| 648 | break; |
| 649 | default: |
| 650 | pr_warning("m66592-udc: xtal configuration error\n"); |
| 651 | clock = 0; |
| 652 | } |
| 653 | |
| 654 | switch (m66592->irq_trigger) { |
| 655 | case IRQF_TRIGGER_LOW: |
| 656 | irq_sense = M66592_INTL; |
| 657 | break; |
| 658 | case IRQF_TRIGGER_FALLING: |
| 659 | irq_sense = 0; |
| 660 | break; |
| 661 | default: |
| 662 | pr_warning("m66592-udc: irq trigger config error\n"); |
| 663 | irq_sense = 0; |
| 664 | } |
| 665 | |
| 666 | m66592_bset(m66592, |
| 667 | (vif & M66592_LDRV) | (endian & M66592_BIGEND), |
| 668 | M66592_PINCFG); |
| 669 | m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */ |
| 670 | m66592_mdfy(m66592, clock & M66592_XTAL, M66592_XTAL, |
| 671 | M66592_SYSCFG); |
| 672 | m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG); |
| 673 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 674 | m66592_bset(m66592, M66592_USBE, M66592_SYSCFG); |
| 675 | |
| 676 | m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG); |
| 677 | |
| 678 | msleep(3); |
| 679 | |
| 680 | m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG); |
| 681 | |
| 682 | msleep(1); |
| 683 | |
| 684 | m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG); |
| 685 | |
| 686 | m66592_bset(m66592, irq_sense & M66592_INTL, M66592_INTENB1); |
| 687 | m66592_write(m66592, M66592_BURST | M66592_CPU_ADR_RD_WR, |
| 688 | M66592_DMA0CFG); |
| 689 | } |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 690 | } |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 691 | |
| 692 | static void disable_controller(struct m66592 *m66592) |
| 693 | { |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 694 | if (!m66592->pdata->on_chip) { |
| 695 | m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG); |
| 696 | udelay(1); |
| 697 | m66592_bclr(m66592, M66592_PLLC, M66592_SYSCFG); |
| 698 | udelay(1); |
| 699 | m66592_bclr(m66592, M66592_RCKE, M66592_SYSCFG); |
| 700 | udelay(1); |
| 701 | m66592_bclr(m66592, M66592_XCKE, M66592_SYSCFG); |
| 702 | } |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 703 | } |
| 704 | |
| 705 | static void m66592_start_xclock(struct m66592 *m66592) |
| 706 | { |
| 707 | u16 tmp; |
| 708 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 709 | if (!m66592->pdata->on_chip) { |
| 710 | tmp = m66592_read(m66592, M66592_SYSCFG); |
| 711 | if (!(tmp & M66592_XCKE)) |
| 712 | m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG); |
| 713 | } |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | /*-------------------------------------------------------------------------*/ |
| 717 | static void transfer_complete(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 718 | struct m66592_request *req, int status) |
| 719 | __releases(m66592->lock) |
| 720 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 721 | { |
| 722 | int restart = 0; |
| 723 | |
| 724 | if (unlikely(ep->pipenum == 0)) { |
| 725 | if (ep->internal_ccpl) { |
| 726 | ep->internal_ccpl = 0; |
| 727 | return; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | list_del_init(&req->queue); |
| 732 | if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN) |
| 733 | req->req.status = -ESHUTDOWN; |
| 734 | else |
| 735 | req->req.status = status; |
| 736 | |
| 737 | if (!list_empty(&ep->queue)) |
| 738 | restart = 1; |
| 739 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 740 | spin_unlock(&ep->m66592->lock); |
| 741 | req->req.complete(&ep->ep, &req->req); |
| 742 | spin_lock(&ep->m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 743 | |
| 744 | if (restart) { |
| 745 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 746 | if (ep->desc) |
| 747 | start_packet(ep, req); |
| 748 | } |
| 749 | } |
| 750 | |
| 751 | static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req) |
| 752 | { |
| 753 | int i; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 754 | u16 tmp; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 755 | unsigned bufsize; |
| 756 | size_t size; |
| 757 | void *buf; |
| 758 | u16 pipenum = ep->pipenum; |
| 759 | struct m66592 *m66592 = ep->m66592; |
| 760 | |
| 761 | pipe_change(m66592, pipenum); |
| 762 | m66592_bset(m66592, M66592_ISEL, ep->fifosel); |
| 763 | |
| 764 | i = 0; |
| 765 | do { |
| 766 | tmp = m66592_read(m66592, ep->fifoctr); |
| 767 | if (i++ > 100000) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 768 | pr_err("pipe0 is busy. maybe cpu i/o bus " |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 769 | "conflict. please power off this controller."); |
| 770 | return; |
| 771 | } |
| 772 | ndelay(1); |
| 773 | } while ((tmp & M66592_FRDY) == 0); |
| 774 | |
| 775 | /* prepare parameters */ |
| 776 | bufsize = get_buffer_size(m66592, pipenum); |
| 777 | buf = req->req.buf + req->req.actual; |
| 778 | size = min(bufsize, req->req.length - req->req.actual); |
| 779 | |
| 780 | /* write fifo */ |
| 781 | if (req->req.buf) { |
| 782 | if (size > 0) |
| 783 | m66592_write_fifo(m66592, ep->fifoaddr, buf, size); |
| 784 | if ((size == 0) || ((size % ep->ep.maxpacket) != 0)) |
| 785 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 786 | } |
| 787 | |
| 788 | /* update parameters */ |
| 789 | req->req.actual += size; |
| 790 | |
| 791 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 792 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 793 | || (size % ep->ep.maxpacket) |
| 794 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 795 | disable_irq_ready(m66592, pipenum); |
| 796 | disable_irq_empty(m66592, pipenum); |
| 797 | } else { |
| 798 | disable_irq_ready(m66592, pipenum); |
| 799 | enable_irq_empty(m66592, pipenum); |
| 800 | } |
| 801 | pipe_start(m66592, pipenum); |
| 802 | } |
| 803 | |
| 804 | static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req) |
| 805 | { |
| 806 | u16 tmp; |
| 807 | unsigned bufsize; |
| 808 | size_t size; |
| 809 | void *buf; |
| 810 | u16 pipenum = ep->pipenum; |
| 811 | struct m66592 *m66592 = ep->m66592; |
| 812 | |
| 813 | pipe_change(m66592, pipenum); |
| 814 | tmp = m66592_read(m66592, ep->fifoctr); |
| 815 | if (unlikely((tmp & M66592_FRDY) == 0)) { |
| 816 | pipe_stop(m66592, pipenum); |
| 817 | pipe_irq_disable(m66592, pipenum); |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 818 | pr_err("write fifo not ready. pipnum=%d\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 819 | return; |
| 820 | } |
| 821 | |
| 822 | /* prepare parameters */ |
| 823 | bufsize = get_buffer_size(m66592, pipenum); |
| 824 | buf = req->req.buf + req->req.actual; |
| 825 | size = min(bufsize, req->req.length - req->req.actual); |
| 826 | |
| 827 | /* write fifo */ |
| 828 | if (req->req.buf) { |
| 829 | m66592_write_fifo(m66592, ep->fifoaddr, buf, size); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 830 | if ((size == 0) |
| 831 | || ((size % ep->ep.maxpacket) != 0) |
| 832 | || ((bufsize != ep->ep.maxpacket) |
| 833 | && (bufsize > size))) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 834 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 835 | } |
| 836 | |
| 837 | /* update parameters */ |
| 838 | req->req.actual += size; |
| 839 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 840 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 841 | || (size % ep->ep.maxpacket) |
| 842 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 843 | disable_irq_ready(m66592, pipenum); |
| 844 | enable_irq_empty(m66592, pipenum); |
| 845 | } else { |
| 846 | disable_irq_empty(m66592, pipenum); |
| 847 | pipe_irq_enable(m66592, pipenum); |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | static void irq_packet_read(struct m66592_ep *ep, struct m66592_request *req) |
| 852 | { |
| 853 | u16 tmp; |
| 854 | int rcv_len, bufsize, req_len; |
| 855 | int size; |
| 856 | void *buf; |
| 857 | u16 pipenum = ep->pipenum; |
| 858 | struct m66592 *m66592 = ep->m66592; |
| 859 | int finish = 0; |
| 860 | |
| 861 | pipe_change(m66592, pipenum); |
| 862 | tmp = m66592_read(m66592, ep->fifoctr); |
| 863 | if (unlikely((tmp & M66592_FRDY) == 0)) { |
| 864 | req->req.status = -EPIPE; |
| 865 | pipe_stop(m66592, pipenum); |
| 866 | pipe_irq_disable(m66592, pipenum); |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 867 | pr_err("read fifo not ready"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 868 | return; |
| 869 | } |
| 870 | |
| 871 | /* prepare parameters */ |
| 872 | rcv_len = tmp & M66592_DTLN; |
| 873 | bufsize = get_buffer_size(m66592, pipenum); |
| 874 | |
| 875 | buf = req->req.buf + req->req.actual; |
| 876 | req_len = req->req.length - req->req.actual; |
| 877 | if (rcv_len < bufsize) |
| 878 | size = min(rcv_len, req_len); |
| 879 | else |
| 880 | size = min(bufsize, req_len); |
| 881 | |
| 882 | /* update parameters */ |
| 883 | req->req.actual += size; |
| 884 | |
| 885 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 886 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 887 | || (size % ep->ep.maxpacket) |
| 888 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 889 | pipe_stop(m66592, pipenum); |
| 890 | pipe_irq_disable(m66592, pipenum); |
| 891 | finish = 1; |
| 892 | } |
| 893 | |
| 894 | /* read fifo */ |
| 895 | if (req->req.buf) { |
| 896 | if (size == 0) |
| 897 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 898 | else |
| 899 | m66592_read_fifo(m66592, ep->fifoaddr, buf, size); |
| 900 | } |
| 901 | |
| 902 | if ((ep->pipenum != 0) && finish) |
| 903 | transfer_complete(ep, req, 0); |
| 904 | } |
| 905 | |
| 906 | static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb) |
| 907 | { |
| 908 | u16 check; |
| 909 | u16 pipenum; |
| 910 | struct m66592_ep *ep; |
| 911 | struct m66592_request *req; |
| 912 | |
| 913 | if ((status & M66592_BRDY0) && (enb & M66592_BRDY0)) { |
| 914 | m66592_write(m66592, ~M66592_BRDY0, M66592_BRDYSTS); |
| 915 | m66592_mdfy(m66592, M66592_PIPE0, M66592_CURPIPE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 916 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 917 | |
| 918 | ep = &m66592->ep[0]; |
| 919 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 920 | irq_packet_read(ep, req); |
| 921 | } else { |
| 922 | for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) { |
| 923 | check = 1 << pipenum; |
| 924 | if ((status & check) && (enb & check)) { |
| 925 | m66592_write(m66592, ~check, M66592_BRDYSTS); |
| 926 | ep = m66592->pipenum2ep[pipenum]; |
| 927 | req = list_entry(ep->queue.next, |
| 928 | struct m66592_request, queue); |
| 929 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 930 | irq_packet_write(ep, req); |
| 931 | else |
| 932 | irq_packet_read(ep, req); |
| 933 | } |
| 934 | } |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | static void irq_pipe_empty(struct m66592 *m66592, u16 status, u16 enb) |
| 939 | { |
| 940 | u16 tmp; |
| 941 | u16 check; |
| 942 | u16 pipenum; |
| 943 | struct m66592_ep *ep; |
| 944 | struct m66592_request *req; |
| 945 | |
| 946 | if ((status & M66592_BEMP0) && (enb & M66592_BEMP0)) { |
| 947 | m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS); |
| 948 | |
| 949 | ep = &m66592->ep[0]; |
| 950 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 951 | irq_ep0_write(ep, req); |
| 952 | } else { |
| 953 | for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) { |
| 954 | check = 1 << pipenum; |
| 955 | if ((status & check) && (enb & check)) { |
| 956 | m66592_write(m66592, ~check, M66592_BEMPSTS); |
| 957 | tmp = control_reg_get(m66592, pipenum); |
| 958 | if ((tmp & M66592_INBUFM) == 0) { |
| 959 | disable_irq_empty(m66592, pipenum); |
| 960 | pipe_irq_disable(m66592, pipenum); |
| 961 | pipe_stop(m66592, pipenum); |
| 962 | ep = m66592->pipenum2ep[pipenum]; |
| 963 | req = list_entry(ep->queue.next, |
| 964 | struct m66592_request, |
| 965 | queue); |
| 966 | if (!list_empty(&ep->queue)) |
| 967 | transfer_complete(ep, req, 0); |
| 968 | } |
| 969 | } |
| 970 | } |
| 971 | } |
| 972 | } |
| 973 | |
| 974 | static void get_status(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 975 | __releases(m66592->lock) |
| 976 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 977 | { |
| 978 | struct m66592_ep *ep; |
| 979 | u16 pid; |
| 980 | u16 status = 0; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 981 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 982 | |
| 983 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 984 | case USB_RECIP_DEVICE: |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 985 | status = 1 << USB_DEVICE_SELF_POWERED; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 986 | break; |
| 987 | case USB_RECIP_INTERFACE: |
| 988 | status = 0; |
| 989 | break; |
| 990 | case USB_RECIP_ENDPOINT: |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 991 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 992 | pid = control_reg_get_pid(m66592, ep->pipenum); |
| 993 | if (pid == M66592_PID_STALL) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 994 | status = 1 << USB_ENDPOINT_HALT; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 995 | else |
| 996 | status = 0; |
| 997 | break; |
| 998 | default: |
| 999 | pipe_stall(m66592, 0); |
| 1000 | return; /* exit */ |
| 1001 | } |
| 1002 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1003 | m66592->ep0_data = cpu_to_le16(status); |
| 1004 | m66592->ep0_req->buf = &m66592->ep0_data; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1005 | m66592->ep0_req->length = 2; |
Al Viro | 53b6795 | 2007-07-15 20:59:22 +0100 | [diff] [blame] | 1006 | /* AV: what happens if we get called again before that gets through? */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1007 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1008 | m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1009 | spin_lock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1010 | } |
| 1011 | |
| 1012 | static void clear_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 1013 | { |
| 1014 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 1015 | case USB_RECIP_DEVICE: |
| 1016 | control_end(m66592, 1); |
| 1017 | break; |
| 1018 | case USB_RECIP_INTERFACE: |
| 1019 | control_end(m66592, 1); |
| 1020 | break; |
| 1021 | case USB_RECIP_ENDPOINT: { |
| 1022 | struct m66592_ep *ep; |
| 1023 | struct m66592_request *req; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1024 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1025 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1026 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1027 | pipe_stop(m66592, ep->pipenum); |
| 1028 | control_reg_sqclr(m66592, ep->pipenum); |
| 1029 | |
| 1030 | control_end(m66592, 1); |
| 1031 | |
| 1032 | req = list_entry(ep->queue.next, |
| 1033 | struct m66592_request, queue); |
| 1034 | if (ep->busy) { |
| 1035 | ep->busy = 0; |
| 1036 | if (list_empty(&ep->queue)) |
| 1037 | break; |
| 1038 | start_packet(ep, req); |
| 1039 | } else if (!list_empty(&ep->queue)) |
| 1040 | pipe_start(m66592, ep->pipenum); |
| 1041 | } |
| 1042 | break; |
| 1043 | default: |
| 1044 | pipe_stall(m66592, 0); |
| 1045 | break; |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 1050 | { |
| 1051 | |
| 1052 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 1053 | case USB_RECIP_DEVICE: |
| 1054 | control_end(m66592, 1); |
| 1055 | break; |
| 1056 | case USB_RECIP_INTERFACE: |
| 1057 | control_end(m66592, 1); |
| 1058 | break; |
| 1059 | case USB_RECIP_ENDPOINT: { |
| 1060 | struct m66592_ep *ep; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1061 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1062 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1063 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1064 | pipe_stall(m66592, ep->pipenum); |
| 1065 | |
| 1066 | control_end(m66592, 1); |
| 1067 | } |
| 1068 | break; |
| 1069 | default: |
| 1070 | pipe_stall(m66592, 0); |
| 1071 | break; |
| 1072 | } |
| 1073 | } |
| 1074 | |
| 1075 | /* if return value is true, call class driver's setup() */ |
| 1076 | static int setup_packet(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 1077 | { |
| 1078 | u16 *p = (u16 *)ctrl; |
| 1079 | unsigned long offset = M66592_USBREQ; |
| 1080 | int i, ret = 0; |
| 1081 | |
| 1082 | /* read fifo */ |
| 1083 | m66592_write(m66592, ~M66592_VALID, M66592_INTSTS0); |
| 1084 | |
| 1085 | for (i = 0; i < 4; i++) |
| 1086 | p[i] = m66592_read(m66592, offset + i*2); |
| 1087 | |
| 1088 | /* check request */ |
| 1089 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 1090 | switch (ctrl->bRequest) { |
| 1091 | case USB_REQ_GET_STATUS: |
| 1092 | get_status(m66592, ctrl); |
| 1093 | break; |
| 1094 | case USB_REQ_CLEAR_FEATURE: |
| 1095 | clear_feature(m66592, ctrl); |
| 1096 | break; |
| 1097 | case USB_REQ_SET_FEATURE: |
| 1098 | set_feature(m66592, ctrl); |
| 1099 | break; |
| 1100 | default: |
| 1101 | ret = 1; |
| 1102 | break; |
| 1103 | } |
| 1104 | } else |
| 1105 | ret = 1; |
| 1106 | return ret; |
| 1107 | } |
| 1108 | |
| 1109 | static void m66592_update_usb_speed(struct m66592 *m66592) |
| 1110 | { |
| 1111 | u16 speed = get_usb_speed(m66592); |
| 1112 | |
| 1113 | switch (speed) { |
| 1114 | case M66592_HSMODE: |
| 1115 | m66592->gadget.speed = USB_SPEED_HIGH; |
| 1116 | break; |
| 1117 | case M66592_FSMODE: |
| 1118 | m66592->gadget.speed = USB_SPEED_FULL; |
| 1119 | break; |
| 1120 | default: |
| 1121 | m66592->gadget.speed = USB_SPEED_UNKNOWN; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1122 | pr_err("USB speed unknown\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | static void irq_device_state(struct m66592 *m66592) |
| 1127 | { |
| 1128 | u16 dvsq; |
| 1129 | |
| 1130 | dvsq = m66592_read(m66592, M66592_INTSTS0) & M66592_DVSQ; |
| 1131 | m66592_write(m66592, ~M66592_DVST, M66592_INTSTS0); |
| 1132 | |
| 1133 | if (dvsq == M66592_DS_DFLT) { /* bus reset */ |
| 1134 | m66592->driver->disconnect(&m66592->gadget); |
| 1135 | m66592_update_usb_speed(m66592); |
| 1136 | } |
| 1137 | if (m66592->old_dvsq == M66592_DS_CNFG && dvsq != M66592_DS_CNFG) |
| 1138 | m66592_update_usb_speed(m66592); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1139 | if ((dvsq == M66592_DS_CNFG || dvsq == M66592_DS_ADDS) |
| 1140 | && m66592->gadget.speed == USB_SPEED_UNKNOWN) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1141 | m66592_update_usb_speed(m66592); |
| 1142 | |
| 1143 | m66592->old_dvsq = dvsq; |
| 1144 | } |
| 1145 | |
| 1146 | static void irq_control_stage(struct m66592 *m66592) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1147 | __releases(m66592->lock) |
| 1148 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1149 | { |
| 1150 | struct usb_ctrlrequest ctrl; |
| 1151 | u16 ctsq; |
| 1152 | |
| 1153 | ctsq = m66592_read(m66592, M66592_INTSTS0) & M66592_CTSQ; |
| 1154 | m66592_write(m66592, ~M66592_CTRT, M66592_INTSTS0); |
| 1155 | |
| 1156 | switch (ctsq) { |
| 1157 | case M66592_CS_IDST: { |
| 1158 | struct m66592_ep *ep; |
| 1159 | struct m66592_request *req; |
| 1160 | ep = &m66592->ep[0]; |
| 1161 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1162 | transfer_complete(ep, req, 0); |
| 1163 | } |
| 1164 | break; |
| 1165 | |
| 1166 | case M66592_CS_RDDS: |
| 1167 | case M66592_CS_WRDS: |
| 1168 | case M66592_CS_WRND: |
| 1169 | if (setup_packet(m66592, &ctrl)) { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1170 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1171 | if (m66592->driver->setup(&m66592->gadget, &ctrl) < 0) |
| 1172 | pipe_stall(m66592, 0); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1173 | spin_lock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1174 | } |
| 1175 | break; |
| 1176 | case M66592_CS_RDSS: |
| 1177 | case M66592_CS_WRSS: |
| 1178 | control_end(m66592, 0); |
| 1179 | break; |
| 1180 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1181 | pr_err("ctrl_stage: unexpect ctsq(%x)\n", ctsq); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1182 | break; |
| 1183 | } |
| 1184 | } |
| 1185 | |
| 1186 | static irqreturn_t m66592_irq(int irq, void *_m66592) |
| 1187 | { |
| 1188 | struct m66592 *m66592 = _m66592; |
| 1189 | u16 intsts0; |
| 1190 | u16 intenb0; |
| 1191 | u16 brdysts, nrdysts, bempsts; |
| 1192 | u16 brdyenb, nrdyenb, bempenb; |
| 1193 | u16 savepipe; |
| 1194 | u16 mask0; |
| 1195 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1196 | spin_lock(&m66592->lock); |
| 1197 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1198 | intsts0 = m66592_read(m66592, M66592_INTSTS0); |
| 1199 | intenb0 = m66592_read(m66592, M66592_INTENB0); |
| 1200 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1201 | if (m66592->pdata->on_chip && !intsts0 && !intenb0) { |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 1202 | /* |
| 1203 | * When USB clock stops, it cannot read register. Even if a |
| 1204 | * clock stops, the interrupt occurs. So this driver turn on |
| 1205 | * a clock by this timing and do re-reading of register. |
| 1206 | */ |
| 1207 | m66592_start_xclock(m66592); |
| 1208 | intsts0 = m66592_read(m66592, M66592_INTSTS0); |
| 1209 | intenb0 = m66592_read(m66592, M66592_INTENB0); |
| 1210 | } |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 1211 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1212 | savepipe = m66592_read(m66592, M66592_CFIFOSEL); |
| 1213 | |
| 1214 | mask0 = intsts0 & intenb0; |
| 1215 | if (mask0) { |
| 1216 | brdysts = m66592_read(m66592, M66592_BRDYSTS); |
| 1217 | nrdysts = m66592_read(m66592, M66592_NRDYSTS); |
| 1218 | bempsts = m66592_read(m66592, M66592_BEMPSTS); |
| 1219 | brdyenb = m66592_read(m66592, M66592_BRDYENB); |
| 1220 | nrdyenb = m66592_read(m66592, M66592_NRDYENB); |
| 1221 | bempenb = m66592_read(m66592, M66592_BEMPENB); |
| 1222 | |
| 1223 | if (mask0 & M66592_VBINT) { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1224 | m66592_write(m66592, 0xffff & ~M66592_VBINT, |
| 1225 | M66592_INTSTS0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1226 | m66592_start_xclock(m66592); |
| 1227 | |
| 1228 | /* start vbus sampling */ |
| 1229 | m66592->old_vbus = m66592_read(m66592, M66592_INTSTS0) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1230 | & M66592_VBSTS; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1231 | m66592->scount = M66592_MAX_SAMPLING; |
| 1232 | |
| 1233 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1234 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1235 | } |
| 1236 | if (intsts0 & M66592_DVSQ) |
| 1237 | irq_device_state(m66592); |
| 1238 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1239 | if ((intsts0 & M66592_BRDY) && (intenb0 & M66592_BRDYE) |
| 1240 | && (brdysts & brdyenb)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1241 | irq_pipe_ready(m66592, brdysts, brdyenb); |
| 1242 | } |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1243 | if ((intsts0 & M66592_BEMP) && (intenb0 & M66592_BEMPE) |
| 1244 | && (bempsts & bempenb)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1245 | irq_pipe_empty(m66592, bempsts, bempenb); |
| 1246 | } |
| 1247 | |
| 1248 | if (intsts0 & M66592_CTRT) |
| 1249 | irq_control_stage(m66592); |
| 1250 | } |
| 1251 | |
| 1252 | m66592_write(m66592, savepipe, M66592_CFIFOSEL); |
| 1253 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1254 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1255 | return IRQ_HANDLED; |
| 1256 | } |
| 1257 | |
| 1258 | static void m66592_timer(unsigned long _m66592) |
| 1259 | { |
| 1260 | struct m66592 *m66592 = (struct m66592 *)_m66592; |
| 1261 | unsigned long flags; |
| 1262 | u16 tmp; |
| 1263 | |
| 1264 | spin_lock_irqsave(&m66592->lock, flags); |
| 1265 | tmp = m66592_read(m66592, M66592_SYSCFG); |
| 1266 | if (!(tmp & M66592_RCKE)) { |
| 1267 | m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG); |
| 1268 | udelay(10); |
| 1269 | m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG); |
| 1270 | } |
| 1271 | if (m66592->scount > 0) { |
| 1272 | tmp = m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS; |
| 1273 | if (tmp == m66592->old_vbus) { |
| 1274 | m66592->scount--; |
| 1275 | if (m66592->scount == 0) { |
| 1276 | if (tmp == M66592_VBSTS) |
| 1277 | m66592_usb_connect(m66592); |
| 1278 | else |
| 1279 | m66592_usb_disconnect(m66592); |
| 1280 | } else { |
| 1281 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1282 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1283 | } |
| 1284 | } else { |
| 1285 | m66592->scount = M66592_MAX_SAMPLING; |
| 1286 | m66592->old_vbus = tmp; |
| 1287 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1288 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1289 | } |
| 1290 | } |
| 1291 | spin_unlock_irqrestore(&m66592->lock, flags); |
| 1292 | } |
| 1293 | |
| 1294 | /*-------------------------------------------------------------------------*/ |
| 1295 | static int m66592_enable(struct usb_ep *_ep, |
| 1296 | const struct usb_endpoint_descriptor *desc) |
| 1297 | { |
| 1298 | struct m66592_ep *ep; |
| 1299 | |
| 1300 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1301 | return alloc_pipe_config(ep, desc); |
| 1302 | } |
| 1303 | |
| 1304 | static int m66592_disable(struct usb_ep *_ep) |
| 1305 | { |
| 1306 | struct m66592_ep *ep; |
| 1307 | struct m66592_request *req; |
| 1308 | unsigned long flags; |
| 1309 | |
| 1310 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1311 | BUG_ON(!ep); |
| 1312 | |
| 1313 | while (!list_empty(&ep->queue)) { |
| 1314 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1315 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1316 | transfer_complete(ep, req, -ECONNRESET); |
| 1317 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1318 | } |
| 1319 | |
| 1320 | pipe_irq_disable(ep->m66592, ep->pipenum); |
| 1321 | return free_pipe_config(ep); |
| 1322 | } |
| 1323 | |
| 1324 | static struct usb_request *m66592_alloc_request(struct usb_ep *_ep, |
| 1325 | gfp_t gfp_flags) |
| 1326 | { |
| 1327 | struct m66592_request *req; |
| 1328 | |
| 1329 | req = kzalloc(sizeof(struct m66592_request), gfp_flags); |
| 1330 | if (!req) |
| 1331 | return NULL; |
| 1332 | |
| 1333 | INIT_LIST_HEAD(&req->queue); |
| 1334 | |
| 1335 | return &req->req; |
| 1336 | } |
| 1337 | |
| 1338 | static void m66592_free_request(struct usb_ep *_ep, struct usb_request *_req) |
| 1339 | { |
| 1340 | struct m66592_request *req; |
| 1341 | |
| 1342 | req = container_of(_req, struct m66592_request, req); |
| 1343 | kfree(req); |
| 1344 | } |
| 1345 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1346 | static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 1347 | gfp_t gfp_flags) |
| 1348 | { |
| 1349 | struct m66592_ep *ep; |
| 1350 | struct m66592_request *req; |
| 1351 | unsigned long flags; |
| 1352 | int request = 0; |
| 1353 | |
| 1354 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1355 | req = container_of(_req, struct m66592_request, req); |
| 1356 | |
| 1357 | if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN) |
| 1358 | return -ESHUTDOWN; |
| 1359 | |
| 1360 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1361 | |
| 1362 | if (list_empty(&ep->queue)) |
| 1363 | request = 1; |
| 1364 | |
| 1365 | list_add_tail(&req->queue, &ep->queue); |
| 1366 | req->req.actual = 0; |
| 1367 | req->req.status = -EINPROGRESS; |
| 1368 | |
David Brownell | a947522 | 2007-07-30 12:31:07 -0700 | [diff] [blame] | 1369 | if (ep->desc == NULL) /* control */ |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1370 | start_ep0(ep, req); |
| 1371 | else { |
| 1372 | if (request && !ep->busy) |
| 1373 | start_packet(ep, req); |
| 1374 | } |
| 1375 | |
| 1376 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1377 | |
| 1378 | return 0; |
| 1379 | } |
| 1380 | |
| 1381 | static int m66592_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
| 1382 | { |
| 1383 | struct m66592_ep *ep; |
| 1384 | struct m66592_request *req; |
| 1385 | unsigned long flags; |
| 1386 | |
| 1387 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1388 | req = container_of(_req, struct m66592_request, req); |
| 1389 | |
| 1390 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1391 | if (!list_empty(&ep->queue)) |
| 1392 | transfer_complete(ep, req, -ECONNRESET); |
| 1393 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1394 | |
| 1395 | return 0; |
| 1396 | } |
| 1397 | |
| 1398 | static int m66592_set_halt(struct usb_ep *_ep, int value) |
| 1399 | { |
| 1400 | struct m66592_ep *ep; |
| 1401 | struct m66592_request *req; |
| 1402 | unsigned long flags; |
| 1403 | int ret = 0; |
| 1404 | |
| 1405 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1406 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1407 | |
| 1408 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1409 | if (!list_empty(&ep->queue)) { |
| 1410 | ret = -EAGAIN; |
| 1411 | goto out; |
| 1412 | } |
| 1413 | if (value) { |
| 1414 | ep->busy = 1; |
| 1415 | pipe_stall(ep->m66592, ep->pipenum); |
| 1416 | } else { |
| 1417 | ep->busy = 0; |
| 1418 | pipe_stop(ep->m66592, ep->pipenum); |
| 1419 | } |
| 1420 | |
| 1421 | out: |
| 1422 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1423 | return ret; |
| 1424 | } |
| 1425 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1426 | static void m66592_fifo_flush(struct usb_ep *_ep) |
| 1427 | { |
| 1428 | struct m66592_ep *ep; |
| 1429 | unsigned long flags; |
| 1430 | |
| 1431 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1432 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1433 | if (list_empty(&ep->queue) && !ep->busy) { |
| 1434 | pipe_stop(ep->m66592, ep->pipenum); |
| 1435 | m66592_bclr(ep->m66592, M66592_BCLR, ep->fifoctr); |
| 1436 | } |
| 1437 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1438 | } |
| 1439 | |
| 1440 | static struct usb_ep_ops m66592_ep_ops = { |
| 1441 | .enable = m66592_enable, |
| 1442 | .disable = m66592_disable, |
| 1443 | |
| 1444 | .alloc_request = m66592_alloc_request, |
| 1445 | .free_request = m66592_free_request, |
| 1446 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1447 | .queue = m66592_queue, |
| 1448 | .dequeue = m66592_dequeue, |
| 1449 | |
| 1450 | .set_halt = m66592_set_halt, |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1451 | .fifo_flush = m66592_fifo_flush, |
| 1452 | }; |
| 1453 | |
| 1454 | /*-------------------------------------------------------------------------*/ |
| 1455 | static struct m66592 *the_controller; |
| 1456 | |
| 1457 | int usb_gadget_register_driver(struct usb_gadget_driver *driver) |
| 1458 | { |
| 1459 | struct m66592 *m66592 = the_controller; |
| 1460 | int retval; |
| 1461 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1462 | if (!driver |
| 1463 | || driver->speed != USB_SPEED_HIGH |
| 1464 | || !driver->bind |
| 1465 | || !driver->setup) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1466 | return -EINVAL; |
| 1467 | if (!m66592) |
| 1468 | return -ENODEV; |
| 1469 | if (m66592->driver) |
| 1470 | return -EBUSY; |
| 1471 | |
| 1472 | /* hook up the driver */ |
| 1473 | driver->driver.bus = NULL; |
| 1474 | m66592->driver = driver; |
| 1475 | m66592->gadget.dev.driver = &driver->driver; |
| 1476 | |
| 1477 | retval = device_add(&m66592->gadget.dev); |
| 1478 | if (retval) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1479 | pr_err("device_add error (%d)\n", retval); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1480 | goto error; |
| 1481 | } |
| 1482 | |
| 1483 | retval = driver->bind (&m66592->gadget); |
| 1484 | if (retval) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1485 | pr_err("bind to driver error (%d)\n", retval); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1486 | device_del(&m66592->gadget.dev); |
| 1487 | goto error; |
| 1488 | } |
| 1489 | |
| 1490 | m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); |
| 1491 | if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) { |
| 1492 | m66592_start_xclock(m66592); |
| 1493 | /* start vbus sampling */ |
| 1494 | m66592->old_vbus = m66592_read(m66592, |
| 1495 | M66592_INTSTS0) & M66592_VBSTS; |
| 1496 | m66592->scount = M66592_MAX_SAMPLING; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1497 | mod_timer(&m66592->timer, jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1498 | } |
| 1499 | |
| 1500 | return 0; |
| 1501 | |
| 1502 | error: |
| 1503 | m66592->driver = NULL; |
| 1504 | m66592->gadget.dev.driver = NULL; |
| 1505 | |
| 1506 | return retval; |
| 1507 | } |
| 1508 | EXPORT_SYMBOL(usb_gadget_register_driver); |
| 1509 | |
| 1510 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 1511 | { |
| 1512 | struct m66592 *m66592 = the_controller; |
| 1513 | unsigned long flags; |
| 1514 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1515 | if (driver != m66592->driver || !driver->unbind) |
| 1516 | return -EINVAL; |
| 1517 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1518 | spin_lock_irqsave(&m66592->lock, flags); |
| 1519 | if (m66592->gadget.speed != USB_SPEED_UNKNOWN) |
| 1520 | m66592_usb_disconnect(m66592); |
| 1521 | spin_unlock_irqrestore(&m66592->lock, flags); |
| 1522 | |
| 1523 | m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); |
| 1524 | |
| 1525 | driver->unbind(&m66592->gadget); |
Patrik Sevallius | eb0be47 | 2007-11-20 09:32:00 -0800 | [diff] [blame] | 1526 | m66592->gadget.dev.driver = NULL; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1527 | |
| 1528 | init_controller(m66592); |
| 1529 | disable_controller(m66592); |
| 1530 | |
| 1531 | device_del(&m66592->gadget.dev); |
| 1532 | m66592->driver = NULL; |
| 1533 | return 0; |
| 1534 | } |
| 1535 | EXPORT_SYMBOL(usb_gadget_unregister_driver); |
| 1536 | |
| 1537 | /*-------------------------------------------------------------------------*/ |
| 1538 | static int m66592_get_frame(struct usb_gadget *_gadget) |
| 1539 | { |
| 1540 | struct m66592 *m66592 = gadget_to_m66592(_gadget); |
| 1541 | return m66592_read(m66592, M66592_FRMNUM) & 0x03FF; |
| 1542 | } |
| 1543 | |
| 1544 | static struct usb_gadget_ops m66592_gadget_ops = { |
| 1545 | .get_frame = m66592_get_frame, |
| 1546 | }; |
| 1547 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1548 | static int __exit m66592_remove(struct platform_device *pdev) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1549 | { |
| 1550 | struct m66592 *m66592 = dev_get_drvdata(&pdev->dev); |
| 1551 | |
| 1552 | del_timer_sync(&m66592->timer); |
| 1553 | iounmap(m66592->reg); |
| 1554 | free_irq(platform_get_irq(pdev, 0), m66592); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1555 | m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1556 | #ifdef CONFIG_HAVE_CLK |
| 1557 | if (m66592->pdata->on_chip) { |
| 1558 | clk_disable(m66592->clk); |
| 1559 | clk_put(m66592->clk); |
| 1560 | } |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1561 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1562 | kfree(m66592); |
| 1563 | return 0; |
| 1564 | } |
| 1565 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1566 | static void nop_completion(struct usb_ep *ep, struct usb_request *r) |
| 1567 | { |
| 1568 | } |
| 1569 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1570 | static int __init m66592_probe(struct platform_device *pdev) |
| 1571 | { |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1572 | struct resource *res, *ires; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1573 | void __iomem *reg = NULL; |
| 1574 | struct m66592 *m66592 = NULL; |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1575 | #ifdef CONFIG_HAVE_CLK |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1576 | char clk_name[8]; |
| 1577 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1578 | int ret = 0; |
| 1579 | int i; |
| 1580 | |
Magnus Damm | 0a2e5b9 | 2008-11-13 15:46:37 +0900 | [diff] [blame] | 1581 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1582 | if (!res) { |
| 1583 | ret = -ENODEV; |
Magnus Damm | 0a2e5b9 | 2008-11-13 15:46:37 +0900 | [diff] [blame] | 1584 | pr_err("platform_get_resource error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1585 | goto clean_up; |
| 1586 | } |
| 1587 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1588 | ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 1589 | if (!ires) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1590 | ret = -ENODEV; |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1591 | dev_err(&pdev->dev, |
| 1592 | "platform_get_resource IORESOURCE_IRQ error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1593 | goto clean_up; |
| 1594 | } |
| 1595 | |
Magnus Damm | 0a2e5b9 | 2008-11-13 15:46:37 +0900 | [diff] [blame] | 1596 | reg = ioremap(res->start, resource_size(res)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1597 | if (reg == NULL) { |
| 1598 | ret = -ENOMEM; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1599 | pr_err("ioremap error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1600 | goto clean_up; |
| 1601 | } |
| 1602 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1603 | if (pdev->dev.platform_data == NULL) { |
| 1604 | dev_err(&pdev->dev, "no platform data\n"); |
| 1605 | ret = -ENODEV; |
| 1606 | goto clean_up; |
| 1607 | } |
| 1608 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1609 | /* initialize ucd */ |
| 1610 | m66592 = kzalloc(sizeof(struct m66592), GFP_KERNEL); |
| 1611 | if (m66592 == NULL) { |
Julia Lawall | 7c81aaf | 2010-08-11 12:10:48 +0200 | [diff] [blame] | 1612 | ret = -ENOMEM; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1613 | pr_err("kzalloc error\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1614 | goto clean_up; |
| 1615 | } |
| 1616 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1617 | m66592->pdata = pdev->dev.platform_data; |
| 1618 | m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK; |
| 1619 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1620 | spin_lock_init(&m66592->lock); |
| 1621 | dev_set_drvdata(&pdev->dev, m66592); |
| 1622 | |
| 1623 | m66592->gadget.ops = &m66592_gadget_ops; |
| 1624 | device_initialize(&m66592->gadget.dev); |
Paul Mundt | 836e4b1 | 2008-07-29 22:33:43 -0700 | [diff] [blame] | 1625 | dev_set_name(&m66592->gadget.dev, "gadget"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1626 | m66592->gadget.is_dualspeed = 1; |
| 1627 | m66592->gadget.dev.parent = &pdev->dev; |
| 1628 | m66592->gadget.dev.dma_mask = pdev->dev.dma_mask; |
| 1629 | m66592->gadget.dev.release = pdev->dev.release; |
| 1630 | m66592->gadget.name = udc_name; |
| 1631 | |
| 1632 | init_timer(&m66592->timer); |
| 1633 | m66592->timer.function = m66592_timer; |
| 1634 | m66592->timer.data = (unsigned long)m66592; |
| 1635 | m66592->reg = reg; |
| 1636 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1637 | ret = request_irq(ires->start, m66592_irq, IRQF_DISABLED | IRQF_SHARED, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1638 | udc_name, m66592); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1639 | if (ret < 0) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1640 | pr_err("request_irq error (%d)\n", ret); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1641 | goto clean_up; |
| 1642 | } |
| 1643 | |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1644 | #ifdef CONFIG_HAVE_CLK |
| 1645 | if (m66592->pdata->on_chip) { |
| 1646 | snprintf(clk_name, sizeof(clk_name), "usbf%d", pdev->id); |
| 1647 | m66592->clk = clk_get(&pdev->dev, clk_name); |
| 1648 | if (IS_ERR(m66592->clk)) { |
| 1649 | dev_err(&pdev->dev, "cannot get clock \"%s\"\n", |
| 1650 | clk_name); |
| 1651 | ret = PTR_ERR(m66592->clk); |
| 1652 | goto clean_up2; |
| 1653 | } |
| 1654 | clk_enable(m66592->clk); |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1655 | } |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1656 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1657 | INIT_LIST_HEAD(&m66592->gadget.ep_list); |
| 1658 | m66592->gadget.ep0 = &m66592->ep[0].ep; |
| 1659 | INIT_LIST_HEAD(&m66592->gadget.ep0->ep_list); |
| 1660 | for (i = 0; i < M66592_MAX_NUM_PIPE; i++) { |
| 1661 | struct m66592_ep *ep = &m66592->ep[i]; |
| 1662 | |
| 1663 | if (i != 0) { |
| 1664 | INIT_LIST_HEAD(&m66592->ep[i].ep.ep_list); |
| 1665 | list_add_tail(&m66592->ep[i].ep.ep_list, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1666 | &m66592->gadget.ep_list); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1667 | } |
| 1668 | ep->m66592 = m66592; |
| 1669 | INIT_LIST_HEAD(&ep->queue); |
| 1670 | ep->ep.name = m66592_ep_name[i]; |
| 1671 | ep->ep.ops = &m66592_ep_ops; |
| 1672 | ep->ep.maxpacket = 512; |
| 1673 | } |
| 1674 | m66592->ep[0].ep.maxpacket = 64; |
| 1675 | m66592->ep[0].pipenum = 0; |
| 1676 | m66592->ep[0].fifoaddr = M66592_CFIFO; |
| 1677 | m66592->ep[0].fifosel = M66592_CFIFOSEL; |
| 1678 | m66592->ep[0].fifoctr = M66592_CFIFOCTR; |
| 1679 | m66592->ep[0].fifotrn = 0; |
| 1680 | m66592->ep[0].pipectr = get_pipectr_addr(0); |
| 1681 | m66592->pipenum2ep[0] = &m66592->ep[0]; |
| 1682 | m66592->epaddr2ep[0] = &m66592->ep[0]; |
| 1683 | |
| 1684 | the_controller = m66592; |
| 1685 | |
| 1686 | m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL); |
| 1687 | if (m66592->ep0_req == NULL) |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1688 | goto clean_up3; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1689 | m66592->ep0_req->complete = nop_completion; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1690 | |
| 1691 | init_controller(m66592); |
| 1692 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1693 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1694 | return 0; |
| 1695 | |
Magnus Damm | af5be79 | 2008-10-31 20:22:13 +0900 | [diff] [blame] | 1696 | clean_up3: |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1697 | #ifdef CONFIG_HAVE_CLK |
| 1698 | if (m66592->pdata->on_chip) { |
| 1699 | clk_disable(m66592->clk); |
| 1700 | clk_put(m66592->clk); |
| 1701 | } |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1702 | clean_up2: |
Paul Mundt | d643510 | 2008-11-18 12:40:39 +0900 | [diff] [blame] | 1703 | #endif |
Magnus Damm | 2c59b0b | 2009-07-22 14:41:35 +0000 | [diff] [blame] | 1704 | free_irq(ires->start, m66592); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1705 | clean_up: |
| 1706 | if (m66592) { |
| 1707 | if (m66592->ep0_req) |
| 1708 | m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); |
| 1709 | kfree(m66592); |
| 1710 | } |
| 1711 | if (reg) |
| 1712 | iounmap(reg); |
| 1713 | |
| 1714 | return ret; |
| 1715 | } |
| 1716 | |
| 1717 | /*-------------------------------------------------------------------------*/ |
| 1718 | static struct platform_driver m66592_driver = { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1719 | .remove = __exit_p(m66592_remove), |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1720 | .driver = { |
| 1721 | .name = (char *) udc_name, |
Kay Sievers | f34c32f | 2008-04-10 21:29:21 -0700 | [diff] [blame] | 1722 | .owner = THIS_MODULE, |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1723 | }, |
| 1724 | }; |
| 1725 | |
| 1726 | static int __init m66592_udc_init(void) |
| 1727 | { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1728 | return platform_driver_probe(&m66592_driver, m66592_probe); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1729 | } |
| 1730 | module_init(m66592_udc_init); |
| 1731 | |
| 1732 | static void __exit m66592_udc_cleanup(void) |
| 1733 | { |
| 1734 | platform_driver_unregister(&m66592_driver); |
| 1735 | } |
| 1736 | module_exit(m66592_udc_cleanup); |