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> |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 28 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 29 | #include <linux/usb/ch9.h> |
David Brownell | 9454a57 | 2007-10-04 18:05:17 -0700 | [diff] [blame] | 30 | #include <linux/usb/gadget.h> |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 31 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 32 | #include "m66592-udc.h" |
| 33 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 34 | |
| 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 | |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 40 | #define DRIVER_VERSION "18 Oct 2007" |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 41 | |
| 42 | /* module parameters */ |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 43 | #if defined(CONFIG_SUPERH_BUILT_IN_M66592) |
| 44 | static unsigned short endian = M66592_LITTLE; |
| 45 | module_param(endian, ushort, 0644); |
| 46 | MODULE_PARM_DESC(endian, "data endian: big=0, little=0 (default=0)"); |
| 47 | #else |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 48 | static unsigned short clock = M66592_XTAL24; |
| 49 | module_param(clock, ushort, 0644); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 50 | MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 " |
| 51 | "(default=16384)"); |
| 52 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 53 | static unsigned short vif = M66592_LDRV; |
| 54 | module_param(vif, ushort, 0644); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 55 | MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0 (default=32768)"); |
| 56 | |
| 57 | static unsigned short endian; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 58 | module_param(endian, ushort, 0644); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 59 | MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)"); |
| 60 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 61 | static unsigned short irq_sense = M66592_INTL; |
| 62 | module_param(irq_sense, ushort, 0644); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 63 | MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=2, falling edge=0 " |
| 64 | "(default=2)"); |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 65 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 66 | |
| 67 | static const char udc_name[] = "m66592_udc"; |
| 68 | static const char *m66592_ep_name[] = { |
| 69 | "ep0", "ep1", "ep2", "ep3", "ep4", "ep5", "ep6", "ep7" |
| 70 | }; |
| 71 | |
| 72 | static void disable_controller(struct m66592 *m66592); |
| 73 | static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req); |
| 74 | static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req); |
| 75 | static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 76 | gfp_t gfp_flags); |
| 77 | |
| 78 | static void transfer_complete(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 79 | struct m66592_request *req, int status); |
| 80 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 81 | /*-------------------------------------------------------------------------*/ |
| 82 | static inline u16 get_usb_speed(struct m66592 *m66592) |
| 83 | { |
| 84 | return (m66592_read(m66592, M66592_DVSTCTR) & M66592_RHST); |
| 85 | } |
| 86 | |
| 87 | static void enable_pipe_irq(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 88 | unsigned long reg) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 89 | { |
| 90 | u16 tmp; |
| 91 | |
| 92 | tmp = m66592_read(m66592, M66592_INTENB0); |
| 93 | m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 94 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 95 | m66592_bset(m66592, (1 << pipenum), reg); |
| 96 | m66592_write(m66592, tmp, M66592_INTENB0); |
| 97 | } |
| 98 | |
| 99 | static void disable_pipe_irq(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 100 | unsigned long reg) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 101 | { |
| 102 | u16 tmp; |
| 103 | |
| 104 | tmp = m66592_read(m66592, M66592_INTENB0); |
| 105 | m66592_bclr(m66592, M66592_BEMPE | M66592_NRDYE | M66592_BRDYE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 106 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 107 | m66592_bclr(m66592, (1 << pipenum), reg); |
| 108 | m66592_write(m66592, tmp, M66592_INTENB0); |
| 109 | } |
| 110 | |
| 111 | static void m66592_usb_connect(struct m66592 *m66592) |
| 112 | { |
| 113 | m66592_bset(m66592, M66592_CTRE, M66592_INTENB0); |
| 114 | m66592_bset(m66592, M66592_WDST | M66592_RDST | M66592_CMPL, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 115 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 116 | m66592_bset(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0); |
| 117 | |
| 118 | m66592_bset(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 119 | } |
| 120 | |
| 121 | static void m66592_usb_disconnect(struct m66592 *m66592) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 122 | __releases(m66592->lock) |
| 123 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 124 | { |
| 125 | m66592_bclr(m66592, M66592_CTRE, M66592_INTENB0); |
| 126 | m66592_bclr(m66592, M66592_WDST | M66592_RDST | M66592_CMPL, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 127 | M66592_INTENB0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 128 | m66592_bclr(m66592, M66592_BEMPE | M66592_BRDYE, M66592_INTENB0); |
| 129 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 130 | |
| 131 | m66592->gadget.speed = USB_SPEED_UNKNOWN; |
| 132 | spin_unlock(&m66592->lock); |
| 133 | m66592->driver->disconnect(&m66592->gadget); |
| 134 | spin_lock(&m66592->lock); |
| 135 | |
| 136 | disable_controller(m66592); |
| 137 | INIT_LIST_HEAD(&m66592->ep[0].queue); |
| 138 | } |
| 139 | |
| 140 | static inline u16 control_reg_get_pid(struct m66592 *m66592, u16 pipenum) |
| 141 | { |
| 142 | u16 pid = 0; |
| 143 | unsigned long offset; |
| 144 | |
| 145 | if (pipenum == 0) |
| 146 | pid = m66592_read(m66592, M66592_DCPCTR) & M66592_PID; |
| 147 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 148 | offset = get_pipectr_addr(pipenum); |
| 149 | pid = m66592_read(m66592, offset) & M66592_PID; |
| 150 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 151 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 152 | |
| 153 | return pid; |
| 154 | } |
| 155 | |
| 156 | static inline void control_reg_set_pid(struct m66592 *m66592, u16 pipenum, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 157 | u16 pid) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 158 | { |
| 159 | unsigned long offset; |
| 160 | |
| 161 | if (pipenum == 0) |
| 162 | m66592_mdfy(m66592, pid, M66592_PID, M66592_DCPCTR); |
| 163 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 164 | offset = get_pipectr_addr(pipenum); |
| 165 | m66592_mdfy(m66592, pid, M66592_PID, offset); |
| 166 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 167 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | static inline void pipe_start(struct m66592 *m66592, u16 pipenum) |
| 171 | { |
| 172 | control_reg_set_pid(m66592, pipenum, M66592_PID_BUF); |
| 173 | } |
| 174 | |
| 175 | static inline void pipe_stop(struct m66592 *m66592, u16 pipenum) |
| 176 | { |
| 177 | control_reg_set_pid(m66592, pipenum, M66592_PID_NAK); |
| 178 | } |
| 179 | |
| 180 | static inline void pipe_stall(struct m66592 *m66592, u16 pipenum) |
| 181 | { |
| 182 | control_reg_set_pid(m66592, pipenum, M66592_PID_STALL); |
| 183 | } |
| 184 | |
| 185 | static inline u16 control_reg_get(struct m66592 *m66592, u16 pipenum) |
| 186 | { |
| 187 | u16 ret = 0; |
| 188 | unsigned long offset; |
| 189 | |
| 190 | if (pipenum == 0) |
| 191 | ret = m66592_read(m66592, M66592_DCPCTR); |
| 192 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 193 | offset = get_pipectr_addr(pipenum); |
| 194 | ret = m66592_read(m66592, offset); |
| 195 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 196 | pr_err("unexpect pipe num (%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 197 | |
| 198 | return ret; |
| 199 | } |
| 200 | |
| 201 | static inline void control_reg_sqclr(struct m66592 *m66592, u16 pipenum) |
| 202 | { |
| 203 | unsigned long offset; |
| 204 | |
| 205 | pipe_stop(m66592, pipenum); |
| 206 | |
| 207 | if (pipenum == 0) |
| 208 | m66592_bset(m66592, M66592_SQCLR, M66592_DCPCTR); |
| 209 | else if (pipenum < M66592_MAX_NUM_PIPE) { |
| 210 | offset = get_pipectr_addr(pipenum); |
| 211 | m66592_bset(m66592, M66592_SQCLR, offset); |
| 212 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 213 | pr_err("unexpect pipe num(%d)\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 214 | } |
| 215 | |
| 216 | static inline int get_buffer_size(struct m66592 *m66592, u16 pipenum) |
| 217 | { |
| 218 | u16 tmp; |
| 219 | int size; |
| 220 | |
| 221 | if (pipenum == 0) { |
| 222 | tmp = m66592_read(m66592, M66592_DCPCFG); |
| 223 | if ((tmp & M66592_CNTMD) != 0) |
| 224 | size = 256; |
| 225 | else { |
| 226 | tmp = m66592_read(m66592, M66592_DCPMAXP); |
| 227 | size = tmp & M66592_MAXP; |
| 228 | } |
| 229 | } else { |
| 230 | m66592_write(m66592, pipenum, M66592_PIPESEL); |
| 231 | tmp = m66592_read(m66592, M66592_PIPECFG); |
| 232 | if ((tmp & M66592_CNTMD) != 0) { |
| 233 | tmp = m66592_read(m66592, M66592_PIPEBUF); |
| 234 | size = ((tmp >> 10) + 1) * 64; |
| 235 | } else { |
| 236 | tmp = m66592_read(m66592, M66592_PIPEMAXP); |
| 237 | size = tmp & M66592_MXPS; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | return size; |
| 242 | } |
| 243 | |
| 244 | static inline void pipe_change(struct m66592 *m66592, u16 pipenum) |
| 245 | { |
| 246 | struct m66592_ep *ep = m66592->pipenum2ep[pipenum]; |
| 247 | |
| 248 | if (ep->use_dma) |
| 249 | return; |
| 250 | |
| 251 | m66592_mdfy(m66592, pipenum, M66592_CURPIPE, ep->fifosel); |
| 252 | |
| 253 | ndelay(450); |
| 254 | |
| 255 | m66592_bset(m66592, M66592_MBW, ep->fifosel); |
| 256 | } |
| 257 | |
| 258 | static int pipe_buffer_setting(struct m66592 *m66592, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 259 | struct m66592_pipe_info *info) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 260 | { |
| 261 | u16 bufnum = 0, buf_bsize = 0; |
| 262 | u16 pipecfg = 0; |
| 263 | |
| 264 | if (info->pipe == 0) |
| 265 | return -EINVAL; |
| 266 | |
| 267 | m66592_write(m66592, info->pipe, M66592_PIPESEL); |
| 268 | |
| 269 | if (info->dir_in) |
| 270 | pipecfg |= M66592_DIR; |
| 271 | pipecfg |= info->type; |
| 272 | pipecfg |= info->epnum; |
| 273 | switch (info->type) { |
| 274 | case M66592_INT: |
| 275 | bufnum = 4 + (info->pipe - M66592_BASE_PIPENUM_INT); |
| 276 | buf_bsize = 0; |
| 277 | break; |
| 278 | case M66592_BULK: |
| 279 | bufnum = m66592->bi_bufnum + |
| 280 | (info->pipe - M66592_BASE_PIPENUM_BULK) * 16; |
| 281 | m66592->bi_bufnum += 16; |
| 282 | buf_bsize = 7; |
| 283 | pipecfg |= M66592_DBLB; |
| 284 | if (!info->dir_in) |
| 285 | pipecfg |= M66592_SHTNAK; |
| 286 | break; |
| 287 | case M66592_ISO: |
| 288 | bufnum = m66592->bi_bufnum + |
| 289 | (info->pipe - M66592_BASE_PIPENUM_ISOC) * 16; |
| 290 | m66592->bi_bufnum += 16; |
| 291 | buf_bsize = 7; |
| 292 | break; |
| 293 | } |
| 294 | if (m66592->bi_bufnum > M66592_MAX_BUFNUM) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 295 | pr_err("m66592 pipe memory is insufficient(%d)\n", |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 296 | m66592->bi_bufnum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 297 | return -ENOMEM; |
| 298 | } |
| 299 | |
| 300 | m66592_write(m66592, pipecfg, M66592_PIPECFG); |
| 301 | m66592_write(m66592, (buf_bsize << 10) | (bufnum), M66592_PIPEBUF); |
| 302 | m66592_write(m66592, info->maxpacket, M66592_PIPEMAXP); |
| 303 | if (info->interval) |
| 304 | info->interval--; |
| 305 | m66592_write(m66592, info->interval, M66592_PIPEPERI); |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | static void pipe_buffer_release(struct m66592 *m66592, |
| 311 | struct m66592_pipe_info *info) |
| 312 | { |
| 313 | if (info->pipe == 0) |
| 314 | return; |
| 315 | |
| 316 | switch (info->type) { |
| 317 | case M66592_BULK: |
| 318 | if (is_bulk_pipe(info->pipe)) |
| 319 | m66592->bi_bufnum -= 16; |
| 320 | break; |
| 321 | case M66592_ISO: |
| 322 | if (is_isoc_pipe(info->pipe)) |
| 323 | m66592->bi_bufnum -= 16; |
| 324 | break; |
| 325 | } |
| 326 | |
| 327 | if (is_bulk_pipe(info->pipe)) { |
| 328 | m66592->bulk--; |
| 329 | } else if (is_interrupt_pipe(info->pipe)) |
| 330 | m66592->interrupt--; |
| 331 | else if (is_isoc_pipe(info->pipe)) { |
| 332 | m66592->isochronous--; |
| 333 | if (info->type == M66592_BULK) |
| 334 | m66592->bulk--; |
| 335 | } else |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 336 | pr_err("ep_release: unexpect pipenum (%d)\n", |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 337 | info->pipe); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | static void pipe_initialize(struct m66592_ep *ep) |
| 341 | { |
| 342 | struct m66592 *m66592 = ep->m66592; |
| 343 | |
| 344 | m66592_mdfy(m66592, 0, M66592_CURPIPE, ep->fifosel); |
| 345 | |
| 346 | m66592_write(m66592, M66592_ACLRM, ep->pipectr); |
| 347 | m66592_write(m66592, 0, ep->pipectr); |
| 348 | m66592_write(m66592, M66592_SQCLR, ep->pipectr); |
| 349 | if (ep->use_dma) { |
| 350 | m66592_mdfy(m66592, ep->pipenum, M66592_CURPIPE, ep->fifosel); |
| 351 | |
| 352 | ndelay(450); |
| 353 | |
| 354 | m66592_bset(m66592, M66592_MBW, ep->fifosel); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | static void m66592_ep_setting(struct m66592 *m66592, struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 359 | const struct usb_endpoint_descriptor *desc, |
| 360 | u16 pipenum, int dma) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 361 | { |
| 362 | if ((pipenum != 0) && dma) { |
| 363 | if (m66592->num_dma == 0) { |
| 364 | m66592->num_dma++; |
| 365 | ep->use_dma = 1; |
| 366 | ep->fifoaddr = M66592_D0FIFO; |
| 367 | ep->fifosel = M66592_D0FIFOSEL; |
| 368 | ep->fifoctr = M66592_D0FIFOCTR; |
| 369 | ep->fifotrn = M66592_D0FIFOTRN; |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 370 | #if !defined(CONFIG_SUPERH_BUILT_IN_M66592) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 371 | } else if (m66592->num_dma == 1) { |
| 372 | m66592->num_dma++; |
| 373 | ep->use_dma = 1; |
| 374 | ep->fifoaddr = M66592_D1FIFO; |
| 375 | ep->fifosel = M66592_D1FIFOSEL; |
| 376 | ep->fifoctr = M66592_D1FIFOCTR; |
| 377 | ep->fifotrn = M66592_D1FIFOTRN; |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 378 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 379 | } else { |
| 380 | ep->use_dma = 0; |
| 381 | ep->fifoaddr = M66592_CFIFO; |
| 382 | ep->fifosel = M66592_CFIFOSEL; |
| 383 | ep->fifoctr = M66592_CFIFOCTR; |
| 384 | ep->fifotrn = 0; |
| 385 | } |
| 386 | } else { |
| 387 | ep->use_dma = 0; |
| 388 | ep->fifoaddr = M66592_CFIFO; |
| 389 | ep->fifosel = M66592_CFIFOSEL; |
| 390 | ep->fifoctr = M66592_CFIFOCTR; |
| 391 | ep->fifotrn = 0; |
| 392 | } |
| 393 | |
| 394 | ep->pipectr = get_pipectr_addr(pipenum); |
| 395 | ep->pipenum = pipenum; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 396 | ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 397 | m66592->pipenum2ep[pipenum] = ep; |
| 398 | m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep; |
| 399 | INIT_LIST_HEAD(&ep->queue); |
| 400 | } |
| 401 | |
| 402 | static void m66592_ep_release(struct m66592_ep *ep) |
| 403 | { |
| 404 | struct m66592 *m66592 = ep->m66592; |
| 405 | u16 pipenum = ep->pipenum; |
| 406 | |
| 407 | if (pipenum == 0) |
| 408 | return; |
| 409 | |
| 410 | if (ep->use_dma) |
| 411 | m66592->num_dma--; |
| 412 | ep->pipenum = 0; |
| 413 | ep->busy = 0; |
| 414 | ep->use_dma = 0; |
| 415 | } |
| 416 | |
| 417 | static int alloc_pipe_config(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 418 | const struct usb_endpoint_descriptor *desc) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 419 | { |
| 420 | struct m66592 *m66592 = ep->m66592; |
| 421 | struct m66592_pipe_info info; |
| 422 | int dma = 0; |
| 423 | int *counter; |
| 424 | int ret; |
| 425 | |
| 426 | ep->desc = desc; |
| 427 | |
| 428 | BUG_ON(ep->pipenum); |
| 429 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 430 | switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 431 | case USB_ENDPOINT_XFER_BULK: |
| 432 | if (m66592->bulk >= M66592_MAX_NUM_BULK) { |
| 433 | if (m66592->isochronous >= M66592_MAX_NUM_ISOC) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 434 | pr_err("bulk pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 435 | return -ENODEV; |
| 436 | } else { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 437 | info.pipe = M66592_BASE_PIPENUM_ISOC |
| 438 | + m66592->isochronous; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 439 | counter = &m66592->isochronous; |
| 440 | } |
| 441 | } else { |
| 442 | info.pipe = M66592_BASE_PIPENUM_BULK + m66592->bulk; |
| 443 | counter = &m66592->bulk; |
| 444 | } |
| 445 | info.type = M66592_BULK; |
| 446 | dma = 1; |
| 447 | break; |
| 448 | case USB_ENDPOINT_XFER_INT: |
| 449 | if (m66592->interrupt >= M66592_MAX_NUM_INT) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 450 | pr_err("interrupt pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 451 | return -ENODEV; |
| 452 | } |
| 453 | info.pipe = M66592_BASE_PIPENUM_INT + m66592->interrupt; |
| 454 | info.type = M66592_INT; |
| 455 | counter = &m66592->interrupt; |
| 456 | break; |
| 457 | case USB_ENDPOINT_XFER_ISOC: |
| 458 | if (m66592->isochronous >= M66592_MAX_NUM_ISOC) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 459 | pr_err("isochronous pipe is insufficient\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 460 | return -ENODEV; |
| 461 | } |
| 462 | info.pipe = M66592_BASE_PIPENUM_ISOC + m66592->isochronous; |
| 463 | info.type = M66592_ISO; |
| 464 | counter = &m66592->isochronous; |
| 465 | break; |
| 466 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 467 | pr_err("unexpect xfer type\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 468 | return -EINVAL; |
| 469 | } |
| 470 | ep->type = info.type; |
| 471 | |
| 472 | info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 473 | info.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 474 | info.interval = desc->bInterval; |
| 475 | if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) |
| 476 | info.dir_in = 1; |
| 477 | else |
| 478 | info.dir_in = 0; |
| 479 | |
| 480 | ret = pipe_buffer_setting(m66592, &info); |
| 481 | if (ret < 0) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 482 | pr_err("pipe_buffer_setting fail\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 483 | return ret; |
| 484 | } |
| 485 | |
| 486 | (*counter)++; |
| 487 | if ((counter == &m66592->isochronous) && info.type == M66592_BULK) |
| 488 | m66592->bulk++; |
| 489 | |
| 490 | m66592_ep_setting(m66592, ep, desc, info.pipe, dma); |
| 491 | pipe_initialize(ep); |
| 492 | |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | static int free_pipe_config(struct m66592_ep *ep) |
| 497 | { |
| 498 | struct m66592 *m66592 = ep->m66592; |
| 499 | struct m66592_pipe_info info; |
| 500 | |
| 501 | info.pipe = ep->pipenum; |
| 502 | info.type = ep->type; |
| 503 | pipe_buffer_release(m66592, &info); |
| 504 | m66592_ep_release(ep); |
| 505 | |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | /*-------------------------------------------------------------------------*/ |
| 510 | static void pipe_irq_enable(struct m66592 *m66592, u16 pipenum) |
| 511 | { |
| 512 | enable_irq_ready(m66592, pipenum); |
| 513 | enable_irq_nrdy(m66592, pipenum); |
| 514 | } |
| 515 | |
| 516 | static void pipe_irq_disable(struct m66592 *m66592, u16 pipenum) |
| 517 | { |
| 518 | disable_irq_ready(m66592, pipenum); |
| 519 | disable_irq_nrdy(m66592, pipenum); |
| 520 | } |
| 521 | |
| 522 | /* if complete is true, gadget driver complete function is not call */ |
| 523 | static void control_end(struct m66592 *m66592, unsigned ccpl) |
| 524 | { |
| 525 | m66592->ep[0].internal_ccpl = ccpl; |
| 526 | pipe_start(m66592, 0); |
| 527 | m66592_bset(m66592, M66592_CCPL, M66592_DCPCTR); |
| 528 | } |
| 529 | |
| 530 | static void start_ep0_write(struct m66592_ep *ep, struct m66592_request *req) |
| 531 | { |
| 532 | struct m66592 *m66592 = ep->m66592; |
| 533 | |
| 534 | pipe_change(m66592, ep->pipenum); |
| 535 | m66592_mdfy(m66592, M66592_ISEL | M66592_PIPE0, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 536 | (M66592_ISEL | M66592_CURPIPE), |
| 537 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 538 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 539 | if (req->req.length == 0) { |
| 540 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 541 | pipe_start(m66592, 0); |
| 542 | transfer_complete(ep, req, 0); |
| 543 | } else { |
| 544 | m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS); |
| 545 | irq_ep0_write(ep, req); |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | static void start_packet_write(struct m66592_ep *ep, struct m66592_request *req) |
| 550 | { |
| 551 | struct m66592 *m66592 = ep->m66592; |
| 552 | u16 tmp; |
| 553 | |
| 554 | pipe_change(m66592, ep->pipenum); |
| 555 | disable_irq_empty(m66592, ep->pipenum); |
| 556 | pipe_start(m66592, ep->pipenum); |
| 557 | |
| 558 | tmp = m66592_read(m66592, ep->fifoctr); |
| 559 | if (unlikely((tmp & M66592_FRDY) == 0)) |
| 560 | pipe_irq_enable(m66592, ep->pipenum); |
| 561 | else |
| 562 | irq_packet_write(ep, req); |
| 563 | } |
| 564 | |
| 565 | static void start_packet_read(struct m66592_ep *ep, struct m66592_request *req) |
| 566 | { |
| 567 | struct m66592 *m66592 = ep->m66592; |
| 568 | u16 pipenum = ep->pipenum; |
| 569 | |
| 570 | if (ep->pipenum == 0) { |
| 571 | m66592_mdfy(m66592, M66592_PIPE0, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 572 | (M66592_ISEL | M66592_CURPIPE), |
| 573 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 574 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 575 | pipe_start(m66592, pipenum); |
| 576 | pipe_irq_enable(m66592, pipenum); |
| 577 | } else { |
| 578 | if (ep->use_dma) { |
| 579 | m66592_bset(m66592, M66592_TRCLR, ep->fifosel); |
| 580 | pipe_change(m66592, pipenum); |
| 581 | m66592_bset(m66592, M66592_TRENB, ep->fifosel); |
| 582 | m66592_write(m66592, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 583 | (req->req.length + ep->ep.maxpacket - 1) |
| 584 | / ep->ep.maxpacket, |
| 585 | ep->fifotrn); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 586 | } |
| 587 | pipe_start(m66592, pipenum); /* trigger once */ |
| 588 | pipe_irq_enable(m66592, pipenum); |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | static void start_packet(struct m66592_ep *ep, struct m66592_request *req) |
| 593 | { |
| 594 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 595 | start_packet_write(ep, req); |
| 596 | else |
| 597 | start_packet_read(ep, req); |
| 598 | } |
| 599 | |
| 600 | static void start_ep0(struct m66592_ep *ep, struct m66592_request *req) |
| 601 | { |
| 602 | u16 ctsq; |
| 603 | |
| 604 | ctsq = m66592_read(ep->m66592, M66592_INTSTS0) & M66592_CTSQ; |
| 605 | |
| 606 | switch (ctsq) { |
| 607 | case M66592_CS_RDDS: |
| 608 | start_ep0_write(ep, req); |
| 609 | break; |
| 610 | case M66592_CS_WRDS: |
| 611 | start_packet_read(ep, req); |
| 612 | break; |
| 613 | |
| 614 | case M66592_CS_WRND: |
| 615 | control_end(ep->m66592, 0); |
| 616 | break; |
| 617 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 618 | pr_err("start_ep0: unexpect ctsq(%x)\n", ctsq); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 619 | break; |
| 620 | } |
| 621 | } |
| 622 | |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 623 | #if defined(CONFIG_SUPERH_BUILT_IN_M66592) |
| 624 | static void init_controller(struct m66592 *m66592) |
| 625 | { |
| 626 | usbf_start_clock(); |
| 627 | m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */ |
| 628 | m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG); |
| 629 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 630 | m66592_bset(m66592, M66592_USBE, M66592_SYSCFG); |
| 631 | |
| 632 | /* This is a workaound for SH7722 2nd cut */ |
| 633 | m66592_bset(m66592, 0x8000, M66592_DVSTCTR); |
| 634 | m66592_bset(m66592, 0x1000, M66592_TESTMODE); |
| 635 | m66592_bclr(m66592, 0x8000, M66592_DVSTCTR); |
| 636 | |
| 637 | m66592_bset(m66592, M66592_INTL, M66592_INTENB1); |
| 638 | |
| 639 | m66592_write(m66592, 0, M66592_CFBCFG); |
| 640 | m66592_write(m66592, 0, M66592_D0FBCFG); |
| 641 | m66592_bset(m66592, endian, M66592_CFBCFG); |
| 642 | m66592_bset(m66592, endian, M66592_D0FBCFG); |
| 643 | } |
| 644 | #else /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */ |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 645 | static void init_controller(struct m66592 *m66592) |
| 646 | { |
| 647 | m66592_bset(m66592, (vif & M66592_LDRV) | (endian & M66592_BIGEND), |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 648 | M66592_PINCFG); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 649 | m66592_bset(m66592, M66592_HSE, M66592_SYSCFG); /* High spd */ |
| 650 | m66592_mdfy(m66592, clock & M66592_XTAL, M66592_XTAL, M66592_SYSCFG); |
| 651 | |
| 652 | m66592_bclr(m66592, M66592_USBE, M66592_SYSCFG); |
| 653 | m66592_bclr(m66592, M66592_DPRPU, M66592_SYSCFG); |
| 654 | m66592_bset(m66592, M66592_USBE, M66592_SYSCFG); |
| 655 | |
| 656 | m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG); |
| 657 | |
| 658 | msleep(3); |
| 659 | |
| 660 | m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG); |
| 661 | |
| 662 | msleep(1); |
| 663 | |
| 664 | m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG); |
| 665 | |
| 666 | m66592_bset(m66592, irq_sense & M66592_INTL, M66592_INTENB1); |
| 667 | m66592_write(m66592, M66592_BURST | M66592_CPU_ADR_RD_WR, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 668 | M66592_DMA0CFG); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 669 | } |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 670 | #endif /* #if defined(CONFIG_SUPERH_BUILT_IN_M66592) */ |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 671 | |
| 672 | static void disable_controller(struct m66592 *m66592) |
| 673 | { |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 674 | #if defined(CONFIG_SUPERH_BUILT_IN_M66592) |
| 675 | usbf_stop_clock(); |
| 676 | #else |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 677 | m66592_bclr(m66592, M66592_SCKE, M66592_SYSCFG); |
| 678 | udelay(1); |
| 679 | m66592_bclr(m66592, M66592_PLLC, M66592_SYSCFG); |
| 680 | udelay(1); |
| 681 | m66592_bclr(m66592, M66592_RCKE, M66592_SYSCFG); |
| 682 | udelay(1); |
| 683 | m66592_bclr(m66592, M66592_XCKE, M66592_SYSCFG); |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 684 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 685 | } |
| 686 | |
| 687 | static void m66592_start_xclock(struct m66592 *m66592) |
| 688 | { |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 689 | #if defined(CONFIG_SUPERH_BUILT_IN_M66592) |
| 690 | usbf_start_clock(); |
| 691 | #else |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 692 | u16 tmp; |
| 693 | |
| 694 | tmp = m66592_read(m66592, M66592_SYSCFG); |
| 695 | if (!(tmp & M66592_XCKE)) |
| 696 | m66592_bset(m66592, M66592_XCKE, M66592_SYSCFG); |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 697 | #endif |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | /*-------------------------------------------------------------------------*/ |
| 701 | static void transfer_complete(struct m66592_ep *ep, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 702 | struct m66592_request *req, int status) |
| 703 | __releases(m66592->lock) |
| 704 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 705 | { |
| 706 | int restart = 0; |
| 707 | |
| 708 | if (unlikely(ep->pipenum == 0)) { |
| 709 | if (ep->internal_ccpl) { |
| 710 | ep->internal_ccpl = 0; |
| 711 | return; |
| 712 | } |
| 713 | } |
| 714 | |
| 715 | list_del_init(&req->queue); |
| 716 | if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN) |
| 717 | req->req.status = -ESHUTDOWN; |
| 718 | else |
| 719 | req->req.status = status; |
| 720 | |
| 721 | if (!list_empty(&ep->queue)) |
| 722 | restart = 1; |
| 723 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 724 | spin_unlock(&ep->m66592->lock); |
| 725 | req->req.complete(&ep->ep, &req->req); |
| 726 | spin_lock(&ep->m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 727 | |
| 728 | if (restart) { |
| 729 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 730 | if (ep->desc) |
| 731 | start_packet(ep, req); |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | static void irq_ep0_write(struct m66592_ep *ep, struct m66592_request *req) |
| 736 | { |
| 737 | int i; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 738 | u16 tmp; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 739 | unsigned bufsize; |
| 740 | size_t size; |
| 741 | void *buf; |
| 742 | u16 pipenum = ep->pipenum; |
| 743 | struct m66592 *m66592 = ep->m66592; |
| 744 | |
| 745 | pipe_change(m66592, pipenum); |
| 746 | m66592_bset(m66592, M66592_ISEL, ep->fifosel); |
| 747 | |
| 748 | i = 0; |
| 749 | do { |
| 750 | tmp = m66592_read(m66592, ep->fifoctr); |
| 751 | if (i++ > 100000) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 752 | pr_err("pipe0 is busy. maybe cpu i/o bus " |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 753 | "conflict. please power off this controller."); |
| 754 | return; |
| 755 | } |
| 756 | ndelay(1); |
| 757 | } while ((tmp & M66592_FRDY) == 0); |
| 758 | |
| 759 | /* prepare parameters */ |
| 760 | bufsize = get_buffer_size(m66592, pipenum); |
| 761 | buf = req->req.buf + req->req.actual; |
| 762 | size = min(bufsize, req->req.length - req->req.actual); |
| 763 | |
| 764 | /* write fifo */ |
| 765 | if (req->req.buf) { |
| 766 | if (size > 0) |
| 767 | m66592_write_fifo(m66592, ep->fifoaddr, buf, size); |
| 768 | if ((size == 0) || ((size % ep->ep.maxpacket) != 0)) |
| 769 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 770 | } |
| 771 | |
| 772 | /* update parameters */ |
| 773 | req->req.actual += size; |
| 774 | |
| 775 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 776 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 777 | || (size % ep->ep.maxpacket) |
| 778 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 779 | disable_irq_ready(m66592, pipenum); |
| 780 | disable_irq_empty(m66592, pipenum); |
| 781 | } else { |
| 782 | disable_irq_ready(m66592, pipenum); |
| 783 | enable_irq_empty(m66592, pipenum); |
| 784 | } |
| 785 | pipe_start(m66592, pipenum); |
| 786 | } |
| 787 | |
| 788 | static void irq_packet_write(struct m66592_ep *ep, struct m66592_request *req) |
| 789 | { |
| 790 | u16 tmp; |
| 791 | unsigned bufsize; |
| 792 | size_t size; |
| 793 | void *buf; |
| 794 | u16 pipenum = ep->pipenum; |
| 795 | struct m66592 *m66592 = ep->m66592; |
| 796 | |
| 797 | pipe_change(m66592, pipenum); |
| 798 | tmp = m66592_read(m66592, ep->fifoctr); |
| 799 | if (unlikely((tmp & M66592_FRDY) == 0)) { |
| 800 | pipe_stop(m66592, pipenum); |
| 801 | pipe_irq_disable(m66592, pipenum); |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 802 | pr_err("write fifo not ready. pipnum=%d\n", pipenum); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 803 | return; |
| 804 | } |
| 805 | |
| 806 | /* prepare parameters */ |
| 807 | bufsize = get_buffer_size(m66592, pipenum); |
| 808 | buf = req->req.buf + req->req.actual; |
| 809 | size = min(bufsize, req->req.length - req->req.actual); |
| 810 | |
| 811 | /* write fifo */ |
| 812 | if (req->req.buf) { |
| 813 | m66592_write_fifo(m66592, ep->fifoaddr, buf, size); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 814 | if ((size == 0) |
| 815 | || ((size % ep->ep.maxpacket) != 0) |
| 816 | || ((bufsize != ep->ep.maxpacket) |
| 817 | && (bufsize > size))) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 818 | m66592_bset(m66592, M66592_BVAL, ep->fifoctr); |
| 819 | } |
| 820 | |
| 821 | /* update parameters */ |
| 822 | req->req.actual += size; |
| 823 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 824 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 825 | || (size % ep->ep.maxpacket) |
| 826 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 827 | disable_irq_ready(m66592, pipenum); |
| 828 | enable_irq_empty(m66592, pipenum); |
| 829 | } else { |
| 830 | disable_irq_empty(m66592, pipenum); |
| 831 | pipe_irq_enable(m66592, pipenum); |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | static void irq_packet_read(struct m66592_ep *ep, struct m66592_request *req) |
| 836 | { |
| 837 | u16 tmp; |
| 838 | int rcv_len, bufsize, req_len; |
| 839 | int size; |
| 840 | void *buf; |
| 841 | u16 pipenum = ep->pipenum; |
| 842 | struct m66592 *m66592 = ep->m66592; |
| 843 | int finish = 0; |
| 844 | |
| 845 | pipe_change(m66592, pipenum); |
| 846 | tmp = m66592_read(m66592, ep->fifoctr); |
| 847 | if (unlikely((tmp & M66592_FRDY) == 0)) { |
| 848 | req->req.status = -EPIPE; |
| 849 | pipe_stop(m66592, pipenum); |
| 850 | pipe_irq_disable(m66592, pipenum); |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 851 | pr_err("read fifo not ready"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 852 | return; |
| 853 | } |
| 854 | |
| 855 | /* prepare parameters */ |
| 856 | rcv_len = tmp & M66592_DTLN; |
| 857 | bufsize = get_buffer_size(m66592, pipenum); |
| 858 | |
| 859 | buf = req->req.buf + req->req.actual; |
| 860 | req_len = req->req.length - req->req.actual; |
| 861 | if (rcv_len < bufsize) |
| 862 | size = min(rcv_len, req_len); |
| 863 | else |
| 864 | size = min(bufsize, req_len); |
| 865 | |
| 866 | /* update parameters */ |
| 867 | req->req.actual += size; |
| 868 | |
| 869 | /* check transfer finish */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 870 | if ((!req->req.zero && (req->req.actual == req->req.length)) |
| 871 | || (size % ep->ep.maxpacket) |
| 872 | || (size == 0)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 873 | pipe_stop(m66592, pipenum); |
| 874 | pipe_irq_disable(m66592, pipenum); |
| 875 | finish = 1; |
| 876 | } |
| 877 | |
| 878 | /* read fifo */ |
| 879 | if (req->req.buf) { |
| 880 | if (size == 0) |
| 881 | m66592_write(m66592, M66592_BCLR, ep->fifoctr); |
| 882 | else |
| 883 | m66592_read_fifo(m66592, ep->fifoaddr, buf, size); |
| 884 | } |
| 885 | |
| 886 | if ((ep->pipenum != 0) && finish) |
| 887 | transfer_complete(ep, req, 0); |
| 888 | } |
| 889 | |
| 890 | static void irq_pipe_ready(struct m66592 *m66592, u16 status, u16 enb) |
| 891 | { |
| 892 | u16 check; |
| 893 | u16 pipenum; |
| 894 | struct m66592_ep *ep; |
| 895 | struct m66592_request *req; |
| 896 | |
| 897 | if ((status & M66592_BRDY0) && (enb & M66592_BRDY0)) { |
| 898 | m66592_write(m66592, ~M66592_BRDY0, M66592_BRDYSTS); |
| 899 | m66592_mdfy(m66592, M66592_PIPE0, M66592_CURPIPE, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 900 | M66592_CFIFOSEL); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 901 | |
| 902 | ep = &m66592->ep[0]; |
| 903 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 904 | irq_packet_read(ep, req); |
| 905 | } else { |
| 906 | for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) { |
| 907 | check = 1 << pipenum; |
| 908 | if ((status & check) && (enb & check)) { |
| 909 | m66592_write(m66592, ~check, M66592_BRDYSTS); |
| 910 | ep = m66592->pipenum2ep[pipenum]; |
| 911 | req = list_entry(ep->queue.next, |
| 912 | struct m66592_request, queue); |
| 913 | if (ep->desc->bEndpointAddress & USB_DIR_IN) |
| 914 | irq_packet_write(ep, req); |
| 915 | else |
| 916 | irq_packet_read(ep, req); |
| 917 | } |
| 918 | } |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | static void irq_pipe_empty(struct m66592 *m66592, u16 status, u16 enb) |
| 923 | { |
| 924 | u16 tmp; |
| 925 | u16 check; |
| 926 | u16 pipenum; |
| 927 | struct m66592_ep *ep; |
| 928 | struct m66592_request *req; |
| 929 | |
| 930 | if ((status & M66592_BEMP0) && (enb & M66592_BEMP0)) { |
| 931 | m66592_write(m66592, ~M66592_BEMP0, M66592_BEMPSTS); |
| 932 | |
| 933 | ep = &m66592->ep[0]; |
| 934 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 935 | irq_ep0_write(ep, req); |
| 936 | } else { |
| 937 | for (pipenum = 1; pipenum < M66592_MAX_NUM_PIPE; pipenum++) { |
| 938 | check = 1 << pipenum; |
| 939 | if ((status & check) && (enb & check)) { |
| 940 | m66592_write(m66592, ~check, M66592_BEMPSTS); |
| 941 | tmp = control_reg_get(m66592, pipenum); |
| 942 | if ((tmp & M66592_INBUFM) == 0) { |
| 943 | disable_irq_empty(m66592, pipenum); |
| 944 | pipe_irq_disable(m66592, pipenum); |
| 945 | pipe_stop(m66592, pipenum); |
| 946 | ep = m66592->pipenum2ep[pipenum]; |
| 947 | req = list_entry(ep->queue.next, |
| 948 | struct m66592_request, |
| 949 | queue); |
| 950 | if (!list_empty(&ep->queue)) |
| 951 | transfer_complete(ep, req, 0); |
| 952 | } |
| 953 | } |
| 954 | } |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | static void get_status(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 959 | __releases(m66592->lock) |
| 960 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 961 | { |
| 962 | struct m66592_ep *ep; |
| 963 | u16 pid; |
| 964 | u16 status = 0; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 965 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 966 | |
| 967 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 968 | case USB_RECIP_DEVICE: |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 969 | status = 1 << USB_DEVICE_SELF_POWERED; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 970 | break; |
| 971 | case USB_RECIP_INTERFACE: |
| 972 | status = 0; |
| 973 | break; |
| 974 | case USB_RECIP_ENDPOINT: |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 975 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 976 | pid = control_reg_get_pid(m66592, ep->pipenum); |
| 977 | if (pid == M66592_PID_STALL) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 978 | status = 1 << USB_ENDPOINT_HALT; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 979 | else |
| 980 | status = 0; |
| 981 | break; |
| 982 | default: |
| 983 | pipe_stall(m66592, 0); |
| 984 | return; /* exit */ |
| 985 | } |
| 986 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 987 | m66592->ep0_data = cpu_to_le16(status); |
| 988 | m66592->ep0_req->buf = &m66592->ep0_data; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 989 | m66592->ep0_req->length = 2; |
Al Viro | 53b6795 | 2007-07-15 20:59:22 +0100 | [diff] [blame] | 990 | /* AV: what happens if we get called again before that gets through? */ |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 991 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 992 | m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 993 | spin_lock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 994 | } |
| 995 | |
| 996 | static void clear_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 997 | { |
| 998 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 999 | case USB_RECIP_DEVICE: |
| 1000 | control_end(m66592, 1); |
| 1001 | break; |
| 1002 | case USB_RECIP_INTERFACE: |
| 1003 | control_end(m66592, 1); |
| 1004 | break; |
| 1005 | case USB_RECIP_ENDPOINT: { |
| 1006 | struct m66592_ep *ep; |
| 1007 | struct m66592_request *req; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1008 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1009 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1010 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1011 | pipe_stop(m66592, ep->pipenum); |
| 1012 | control_reg_sqclr(m66592, ep->pipenum); |
| 1013 | |
| 1014 | control_end(m66592, 1); |
| 1015 | |
| 1016 | req = list_entry(ep->queue.next, |
| 1017 | struct m66592_request, queue); |
| 1018 | if (ep->busy) { |
| 1019 | ep->busy = 0; |
| 1020 | if (list_empty(&ep->queue)) |
| 1021 | break; |
| 1022 | start_packet(ep, req); |
| 1023 | } else if (!list_empty(&ep->queue)) |
| 1024 | pipe_start(m66592, ep->pipenum); |
| 1025 | } |
| 1026 | break; |
| 1027 | default: |
| 1028 | pipe_stall(m66592, 0); |
| 1029 | break; |
| 1030 | } |
| 1031 | } |
| 1032 | |
| 1033 | static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 1034 | { |
| 1035 | |
| 1036 | switch (ctrl->bRequestType & USB_RECIP_MASK) { |
| 1037 | case USB_RECIP_DEVICE: |
| 1038 | control_end(m66592, 1); |
| 1039 | break; |
| 1040 | case USB_RECIP_INTERFACE: |
| 1041 | control_end(m66592, 1); |
| 1042 | break; |
| 1043 | case USB_RECIP_ENDPOINT: { |
| 1044 | struct m66592_ep *ep; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1045 | u16 w_index = le16_to_cpu(ctrl->wIndex); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1046 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1047 | ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK]; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1048 | pipe_stall(m66592, ep->pipenum); |
| 1049 | |
| 1050 | control_end(m66592, 1); |
| 1051 | } |
| 1052 | break; |
| 1053 | default: |
| 1054 | pipe_stall(m66592, 0); |
| 1055 | break; |
| 1056 | } |
| 1057 | } |
| 1058 | |
| 1059 | /* if return value is true, call class driver's setup() */ |
| 1060 | static int setup_packet(struct m66592 *m66592, struct usb_ctrlrequest *ctrl) |
| 1061 | { |
| 1062 | u16 *p = (u16 *)ctrl; |
| 1063 | unsigned long offset = M66592_USBREQ; |
| 1064 | int i, ret = 0; |
| 1065 | |
| 1066 | /* read fifo */ |
| 1067 | m66592_write(m66592, ~M66592_VALID, M66592_INTSTS0); |
| 1068 | |
| 1069 | for (i = 0; i < 4; i++) |
| 1070 | p[i] = m66592_read(m66592, offset + i*2); |
| 1071 | |
| 1072 | /* check request */ |
| 1073 | if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 1074 | switch (ctrl->bRequest) { |
| 1075 | case USB_REQ_GET_STATUS: |
| 1076 | get_status(m66592, ctrl); |
| 1077 | break; |
| 1078 | case USB_REQ_CLEAR_FEATURE: |
| 1079 | clear_feature(m66592, ctrl); |
| 1080 | break; |
| 1081 | case USB_REQ_SET_FEATURE: |
| 1082 | set_feature(m66592, ctrl); |
| 1083 | break; |
| 1084 | default: |
| 1085 | ret = 1; |
| 1086 | break; |
| 1087 | } |
| 1088 | } else |
| 1089 | ret = 1; |
| 1090 | return ret; |
| 1091 | } |
| 1092 | |
| 1093 | static void m66592_update_usb_speed(struct m66592 *m66592) |
| 1094 | { |
| 1095 | u16 speed = get_usb_speed(m66592); |
| 1096 | |
| 1097 | switch (speed) { |
| 1098 | case M66592_HSMODE: |
| 1099 | m66592->gadget.speed = USB_SPEED_HIGH; |
| 1100 | break; |
| 1101 | case M66592_FSMODE: |
| 1102 | m66592->gadget.speed = USB_SPEED_FULL; |
| 1103 | break; |
| 1104 | default: |
| 1105 | m66592->gadget.speed = USB_SPEED_UNKNOWN; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1106 | pr_err("USB speed unknown\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | static void irq_device_state(struct m66592 *m66592) |
| 1111 | { |
| 1112 | u16 dvsq; |
| 1113 | |
| 1114 | dvsq = m66592_read(m66592, M66592_INTSTS0) & M66592_DVSQ; |
| 1115 | m66592_write(m66592, ~M66592_DVST, M66592_INTSTS0); |
| 1116 | |
| 1117 | if (dvsq == M66592_DS_DFLT) { /* bus reset */ |
| 1118 | m66592->driver->disconnect(&m66592->gadget); |
| 1119 | m66592_update_usb_speed(m66592); |
| 1120 | } |
| 1121 | if (m66592->old_dvsq == M66592_DS_CNFG && dvsq != M66592_DS_CNFG) |
| 1122 | m66592_update_usb_speed(m66592); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1123 | if ((dvsq == M66592_DS_CNFG || dvsq == M66592_DS_ADDS) |
| 1124 | && m66592->gadget.speed == USB_SPEED_UNKNOWN) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1125 | m66592_update_usb_speed(m66592); |
| 1126 | |
| 1127 | m66592->old_dvsq = dvsq; |
| 1128 | } |
| 1129 | |
| 1130 | static void irq_control_stage(struct m66592 *m66592) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1131 | __releases(m66592->lock) |
| 1132 | __acquires(m66592->lock) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1133 | { |
| 1134 | struct usb_ctrlrequest ctrl; |
| 1135 | u16 ctsq; |
| 1136 | |
| 1137 | ctsq = m66592_read(m66592, M66592_INTSTS0) & M66592_CTSQ; |
| 1138 | m66592_write(m66592, ~M66592_CTRT, M66592_INTSTS0); |
| 1139 | |
| 1140 | switch (ctsq) { |
| 1141 | case M66592_CS_IDST: { |
| 1142 | struct m66592_ep *ep; |
| 1143 | struct m66592_request *req; |
| 1144 | ep = &m66592->ep[0]; |
| 1145 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1146 | transfer_complete(ep, req, 0); |
| 1147 | } |
| 1148 | break; |
| 1149 | |
| 1150 | case M66592_CS_RDDS: |
| 1151 | case M66592_CS_WRDS: |
| 1152 | case M66592_CS_WRND: |
| 1153 | if (setup_packet(m66592, &ctrl)) { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1154 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1155 | if (m66592->driver->setup(&m66592->gadget, &ctrl) < 0) |
| 1156 | pipe_stall(m66592, 0); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1157 | spin_lock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1158 | } |
| 1159 | break; |
| 1160 | case M66592_CS_RDSS: |
| 1161 | case M66592_CS_WRSS: |
| 1162 | control_end(m66592, 0); |
| 1163 | break; |
| 1164 | default: |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1165 | pr_err("ctrl_stage: unexpect ctsq(%x)\n", ctsq); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1166 | break; |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | static irqreturn_t m66592_irq(int irq, void *_m66592) |
| 1171 | { |
| 1172 | struct m66592 *m66592 = _m66592; |
| 1173 | u16 intsts0; |
| 1174 | u16 intenb0; |
| 1175 | u16 brdysts, nrdysts, bempsts; |
| 1176 | u16 brdyenb, nrdyenb, bempenb; |
| 1177 | u16 savepipe; |
| 1178 | u16 mask0; |
| 1179 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1180 | spin_lock(&m66592->lock); |
| 1181 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1182 | intsts0 = m66592_read(m66592, M66592_INTSTS0); |
| 1183 | intenb0 = m66592_read(m66592, M66592_INTENB0); |
| 1184 | |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 1185 | #if defined(CONFIG_SUPERH_BUILT_IN_M66592) |
| 1186 | if (!intsts0 && !intenb0) { |
| 1187 | /* |
| 1188 | * When USB clock stops, it cannot read register. Even if a |
| 1189 | * clock stops, the interrupt occurs. So this driver turn on |
| 1190 | * a clock by this timing and do re-reading of register. |
| 1191 | */ |
| 1192 | m66592_start_xclock(m66592); |
| 1193 | intsts0 = m66592_read(m66592, M66592_INTSTS0); |
| 1194 | intenb0 = m66592_read(m66592, M66592_INTENB0); |
| 1195 | } |
| 1196 | #endif |
| 1197 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1198 | savepipe = m66592_read(m66592, M66592_CFIFOSEL); |
| 1199 | |
| 1200 | mask0 = intsts0 & intenb0; |
| 1201 | if (mask0) { |
| 1202 | brdysts = m66592_read(m66592, M66592_BRDYSTS); |
| 1203 | nrdysts = m66592_read(m66592, M66592_NRDYSTS); |
| 1204 | bempsts = m66592_read(m66592, M66592_BEMPSTS); |
| 1205 | brdyenb = m66592_read(m66592, M66592_BRDYENB); |
| 1206 | nrdyenb = m66592_read(m66592, M66592_NRDYENB); |
| 1207 | bempenb = m66592_read(m66592, M66592_BEMPENB); |
| 1208 | |
| 1209 | if (mask0 & M66592_VBINT) { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1210 | m66592_write(m66592, 0xffff & ~M66592_VBINT, |
| 1211 | M66592_INTSTS0); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1212 | m66592_start_xclock(m66592); |
| 1213 | |
| 1214 | /* start vbus sampling */ |
| 1215 | m66592->old_vbus = m66592_read(m66592, M66592_INTSTS0) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1216 | & M66592_VBSTS; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1217 | m66592->scount = M66592_MAX_SAMPLING; |
| 1218 | |
| 1219 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1220 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1221 | } |
| 1222 | if (intsts0 & M66592_DVSQ) |
| 1223 | irq_device_state(m66592); |
| 1224 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1225 | if ((intsts0 & M66592_BRDY) && (intenb0 & M66592_BRDYE) |
| 1226 | && (brdysts & brdyenb)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1227 | irq_pipe_ready(m66592, brdysts, brdyenb); |
| 1228 | } |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1229 | if ((intsts0 & M66592_BEMP) && (intenb0 & M66592_BEMPE) |
| 1230 | && (bempsts & bempenb)) { |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1231 | irq_pipe_empty(m66592, bempsts, bempenb); |
| 1232 | } |
| 1233 | |
| 1234 | if (intsts0 & M66592_CTRT) |
| 1235 | irq_control_stage(m66592); |
| 1236 | } |
| 1237 | |
| 1238 | m66592_write(m66592, savepipe, M66592_CFIFOSEL); |
| 1239 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1240 | spin_unlock(&m66592->lock); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1241 | return IRQ_HANDLED; |
| 1242 | } |
| 1243 | |
| 1244 | static void m66592_timer(unsigned long _m66592) |
| 1245 | { |
| 1246 | struct m66592 *m66592 = (struct m66592 *)_m66592; |
| 1247 | unsigned long flags; |
| 1248 | u16 tmp; |
| 1249 | |
| 1250 | spin_lock_irqsave(&m66592->lock, flags); |
| 1251 | tmp = m66592_read(m66592, M66592_SYSCFG); |
| 1252 | if (!(tmp & M66592_RCKE)) { |
| 1253 | m66592_bset(m66592, M66592_RCKE | M66592_PLLC, M66592_SYSCFG); |
| 1254 | udelay(10); |
| 1255 | m66592_bset(m66592, M66592_SCKE, M66592_SYSCFG); |
| 1256 | } |
| 1257 | if (m66592->scount > 0) { |
| 1258 | tmp = m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS; |
| 1259 | if (tmp == m66592->old_vbus) { |
| 1260 | m66592->scount--; |
| 1261 | if (m66592->scount == 0) { |
| 1262 | if (tmp == M66592_VBSTS) |
| 1263 | m66592_usb_connect(m66592); |
| 1264 | else |
| 1265 | m66592_usb_disconnect(m66592); |
| 1266 | } else { |
| 1267 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1268 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1269 | } |
| 1270 | } else { |
| 1271 | m66592->scount = M66592_MAX_SAMPLING; |
| 1272 | m66592->old_vbus = tmp; |
| 1273 | mod_timer(&m66592->timer, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1274 | jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1275 | } |
| 1276 | } |
| 1277 | spin_unlock_irqrestore(&m66592->lock, flags); |
| 1278 | } |
| 1279 | |
| 1280 | /*-------------------------------------------------------------------------*/ |
| 1281 | static int m66592_enable(struct usb_ep *_ep, |
| 1282 | const struct usb_endpoint_descriptor *desc) |
| 1283 | { |
| 1284 | struct m66592_ep *ep; |
| 1285 | |
| 1286 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1287 | return alloc_pipe_config(ep, desc); |
| 1288 | } |
| 1289 | |
| 1290 | static int m66592_disable(struct usb_ep *_ep) |
| 1291 | { |
| 1292 | struct m66592_ep *ep; |
| 1293 | struct m66592_request *req; |
| 1294 | unsigned long flags; |
| 1295 | |
| 1296 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1297 | BUG_ON(!ep); |
| 1298 | |
| 1299 | while (!list_empty(&ep->queue)) { |
| 1300 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1301 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1302 | transfer_complete(ep, req, -ECONNRESET); |
| 1303 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1304 | } |
| 1305 | |
| 1306 | pipe_irq_disable(ep->m66592, ep->pipenum); |
| 1307 | return free_pipe_config(ep); |
| 1308 | } |
| 1309 | |
| 1310 | static struct usb_request *m66592_alloc_request(struct usb_ep *_ep, |
| 1311 | gfp_t gfp_flags) |
| 1312 | { |
| 1313 | struct m66592_request *req; |
| 1314 | |
| 1315 | req = kzalloc(sizeof(struct m66592_request), gfp_flags); |
| 1316 | if (!req) |
| 1317 | return NULL; |
| 1318 | |
| 1319 | INIT_LIST_HEAD(&req->queue); |
| 1320 | |
| 1321 | return &req->req; |
| 1322 | } |
| 1323 | |
| 1324 | static void m66592_free_request(struct usb_ep *_ep, struct usb_request *_req) |
| 1325 | { |
| 1326 | struct m66592_request *req; |
| 1327 | |
| 1328 | req = container_of(_req, struct m66592_request, req); |
| 1329 | kfree(req); |
| 1330 | } |
| 1331 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1332 | static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req, |
| 1333 | gfp_t gfp_flags) |
| 1334 | { |
| 1335 | struct m66592_ep *ep; |
| 1336 | struct m66592_request *req; |
| 1337 | unsigned long flags; |
| 1338 | int request = 0; |
| 1339 | |
| 1340 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1341 | req = container_of(_req, struct m66592_request, req); |
| 1342 | |
| 1343 | if (ep->m66592->gadget.speed == USB_SPEED_UNKNOWN) |
| 1344 | return -ESHUTDOWN; |
| 1345 | |
| 1346 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1347 | |
| 1348 | if (list_empty(&ep->queue)) |
| 1349 | request = 1; |
| 1350 | |
| 1351 | list_add_tail(&req->queue, &ep->queue); |
| 1352 | req->req.actual = 0; |
| 1353 | req->req.status = -EINPROGRESS; |
| 1354 | |
David Brownell | a947522 | 2007-07-30 12:31:07 -0700 | [diff] [blame] | 1355 | if (ep->desc == NULL) /* control */ |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1356 | start_ep0(ep, req); |
| 1357 | else { |
| 1358 | if (request && !ep->busy) |
| 1359 | start_packet(ep, req); |
| 1360 | } |
| 1361 | |
| 1362 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1363 | |
| 1364 | return 0; |
| 1365 | } |
| 1366 | |
| 1367 | static int m66592_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
| 1368 | { |
| 1369 | struct m66592_ep *ep; |
| 1370 | struct m66592_request *req; |
| 1371 | unsigned long flags; |
| 1372 | |
| 1373 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1374 | req = container_of(_req, struct m66592_request, req); |
| 1375 | |
| 1376 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1377 | if (!list_empty(&ep->queue)) |
| 1378 | transfer_complete(ep, req, -ECONNRESET); |
| 1379 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1380 | |
| 1381 | return 0; |
| 1382 | } |
| 1383 | |
| 1384 | static int m66592_set_halt(struct usb_ep *_ep, int value) |
| 1385 | { |
| 1386 | struct m66592_ep *ep; |
| 1387 | struct m66592_request *req; |
| 1388 | unsigned long flags; |
| 1389 | int ret = 0; |
| 1390 | |
| 1391 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1392 | req = list_entry(ep->queue.next, struct m66592_request, queue); |
| 1393 | |
| 1394 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1395 | if (!list_empty(&ep->queue)) { |
| 1396 | ret = -EAGAIN; |
| 1397 | goto out; |
| 1398 | } |
| 1399 | if (value) { |
| 1400 | ep->busy = 1; |
| 1401 | pipe_stall(ep->m66592, ep->pipenum); |
| 1402 | } else { |
| 1403 | ep->busy = 0; |
| 1404 | pipe_stop(ep->m66592, ep->pipenum); |
| 1405 | } |
| 1406 | |
| 1407 | out: |
| 1408 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1409 | return ret; |
| 1410 | } |
| 1411 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1412 | static void m66592_fifo_flush(struct usb_ep *_ep) |
| 1413 | { |
| 1414 | struct m66592_ep *ep; |
| 1415 | unsigned long flags; |
| 1416 | |
| 1417 | ep = container_of(_ep, struct m66592_ep, ep); |
| 1418 | spin_lock_irqsave(&ep->m66592->lock, flags); |
| 1419 | if (list_empty(&ep->queue) && !ep->busy) { |
| 1420 | pipe_stop(ep->m66592, ep->pipenum); |
| 1421 | m66592_bclr(ep->m66592, M66592_BCLR, ep->fifoctr); |
| 1422 | } |
| 1423 | spin_unlock_irqrestore(&ep->m66592->lock, flags); |
| 1424 | } |
| 1425 | |
| 1426 | static struct usb_ep_ops m66592_ep_ops = { |
| 1427 | .enable = m66592_enable, |
| 1428 | .disable = m66592_disable, |
| 1429 | |
| 1430 | .alloc_request = m66592_alloc_request, |
| 1431 | .free_request = m66592_free_request, |
| 1432 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1433 | .queue = m66592_queue, |
| 1434 | .dequeue = m66592_dequeue, |
| 1435 | |
| 1436 | .set_halt = m66592_set_halt, |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1437 | .fifo_flush = m66592_fifo_flush, |
| 1438 | }; |
| 1439 | |
| 1440 | /*-------------------------------------------------------------------------*/ |
| 1441 | static struct m66592 *the_controller; |
| 1442 | |
| 1443 | int usb_gadget_register_driver(struct usb_gadget_driver *driver) |
| 1444 | { |
| 1445 | struct m66592 *m66592 = the_controller; |
| 1446 | int retval; |
| 1447 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1448 | if (!driver |
| 1449 | || driver->speed != USB_SPEED_HIGH |
| 1450 | || !driver->bind |
| 1451 | || !driver->setup) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1452 | return -EINVAL; |
| 1453 | if (!m66592) |
| 1454 | return -ENODEV; |
| 1455 | if (m66592->driver) |
| 1456 | return -EBUSY; |
| 1457 | |
| 1458 | /* hook up the driver */ |
| 1459 | driver->driver.bus = NULL; |
| 1460 | m66592->driver = driver; |
| 1461 | m66592->gadget.dev.driver = &driver->driver; |
| 1462 | |
| 1463 | retval = device_add(&m66592->gadget.dev); |
| 1464 | if (retval) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1465 | pr_err("device_add error (%d)\n", retval); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1466 | goto error; |
| 1467 | } |
| 1468 | |
| 1469 | retval = driver->bind (&m66592->gadget); |
| 1470 | if (retval) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1471 | pr_err("bind to driver error (%d)\n", retval); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1472 | device_del(&m66592->gadget.dev); |
| 1473 | goto error; |
| 1474 | } |
| 1475 | |
| 1476 | m66592_bset(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); |
| 1477 | if (m66592_read(m66592, M66592_INTSTS0) & M66592_VBSTS) { |
| 1478 | m66592_start_xclock(m66592); |
| 1479 | /* start vbus sampling */ |
| 1480 | m66592->old_vbus = m66592_read(m66592, |
| 1481 | M66592_INTSTS0) & M66592_VBSTS; |
| 1482 | m66592->scount = M66592_MAX_SAMPLING; |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1483 | mod_timer(&m66592->timer, jiffies + msecs_to_jiffies(50)); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1484 | } |
| 1485 | |
| 1486 | return 0; |
| 1487 | |
| 1488 | error: |
| 1489 | m66592->driver = NULL; |
| 1490 | m66592->gadget.dev.driver = NULL; |
| 1491 | |
| 1492 | return retval; |
| 1493 | } |
| 1494 | EXPORT_SYMBOL(usb_gadget_register_driver); |
| 1495 | |
| 1496 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 1497 | { |
| 1498 | struct m66592 *m66592 = the_controller; |
| 1499 | unsigned long flags; |
| 1500 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1501 | if (driver != m66592->driver || !driver->unbind) |
| 1502 | return -EINVAL; |
| 1503 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1504 | spin_lock_irqsave(&m66592->lock, flags); |
| 1505 | if (m66592->gadget.speed != USB_SPEED_UNKNOWN) |
| 1506 | m66592_usb_disconnect(m66592); |
| 1507 | spin_unlock_irqrestore(&m66592->lock, flags); |
| 1508 | |
| 1509 | m66592_bclr(m66592, M66592_VBSE | M66592_URST, M66592_INTENB0); |
| 1510 | |
| 1511 | driver->unbind(&m66592->gadget); |
Patrik Sevallius | eb0be47 | 2007-11-20 09:32:00 -0800 | [diff] [blame] | 1512 | m66592->gadget.dev.driver = NULL; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1513 | |
| 1514 | init_controller(m66592); |
| 1515 | disable_controller(m66592); |
| 1516 | |
| 1517 | device_del(&m66592->gadget.dev); |
| 1518 | m66592->driver = NULL; |
| 1519 | return 0; |
| 1520 | } |
| 1521 | EXPORT_SYMBOL(usb_gadget_unregister_driver); |
| 1522 | |
| 1523 | /*-------------------------------------------------------------------------*/ |
| 1524 | static int m66592_get_frame(struct usb_gadget *_gadget) |
| 1525 | { |
| 1526 | struct m66592 *m66592 = gadget_to_m66592(_gadget); |
| 1527 | return m66592_read(m66592, M66592_FRMNUM) & 0x03FF; |
| 1528 | } |
| 1529 | |
| 1530 | static struct usb_gadget_ops m66592_gadget_ops = { |
| 1531 | .get_frame = m66592_get_frame, |
| 1532 | }; |
| 1533 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1534 | static int __exit m66592_remove(struct platform_device *pdev) |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1535 | { |
| 1536 | struct m66592 *m66592 = dev_get_drvdata(&pdev->dev); |
| 1537 | |
| 1538 | del_timer_sync(&m66592->timer); |
| 1539 | iounmap(m66592->reg); |
| 1540 | free_irq(platform_get_irq(pdev, 0), m66592); |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1541 | m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); |
Yoshihiro Shimoda | 8c73aff | 2007-11-22 21:00:30 +0900 | [diff] [blame] | 1542 | usbf_stop_clock(); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1543 | kfree(m66592); |
| 1544 | return 0; |
| 1545 | } |
| 1546 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1547 | static void nop_completion(struct usb_ep *ep, struct usb_request *r) |
| 1548 | { |
| 1549 | } |
| 1550 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1551 | #define resource_len(r) (((r)->end - (r)->start) + 1) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1552 | |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1553 | static int __init m66592_probe(struct platform_device *pdev) |
| 1554 | { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1555 | struct resource *res; |
| 1556 | int irq; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1557 | void __iomem *reg = NULL; |
| 1558 | struct m66592 *m66592 = NULL; |
| 1559 | int ret = 0; |
| 1560 | int i; |
| 1561 | |
| 1562 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1563 | (char *)udc_name); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1564 | if (!res) { |
| 1565 | ret = -ENODEV; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1566 | pr_err("platform_get_resource_byname error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1567 | goto clean_up; |
| 1568 | } |
| 1569 | |
| 1570 | irq = platform_get_irq(pdev, 0); |
| 1571 | if (irq < 0) { |
| 1572 | ret = -ENODEV; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1573 | pr_err("platform_get_irq error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1574 | goto clean_up; |
| 1575 | } |
| 1576 | |
| 1577 | reg = ioremap(res->start, resource_len(res)); |
| 1578 | if (reg == NULL) { |
| 1579 | ret = -ENOMEM; |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1580 | pr_err("ioremap error.\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1581 | goto clean_up; |
| 1582 | } |
| 1583 | |
| 1584 | /* initialize ucd */ |
| 1585 | m66592 = kzalloc(sizeof(struct m66592), GFP_KERNEL); |
| 1586 | if (m66592 == NULL) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1587 | pr_err("kzalloc error\n"); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1588 | goto clean_up; |
| 1589 | } |
| 1590 | |
| 1591 | spin_lock_init(&m66592->lock); |
| 1592 | dev_set_drvdata(&pdev->dev, m66592); |
| 1593 | |
| 1594 | m66592->gadget.ops = &m66592_gadget_ops; |
| 1595 | device_initialize(&m66592->gadget.dev); |
| 1596 | strcpy(m66592->gadget.dev.bus_id, "gadget"); |
| 1597 | m66592->gadget.is_dualspeed = 1; |
| 1598 | m66592->gadget.dev.parent = &pdev->dev; |
| 1599 | m66592->gadget.dev.dma_mask = pdev->dev.dma_mask; |
| 1600 | m66592->gadget.dev.release = pdev->dev.release; |
| 1601 | m66592->gadget.name = udc_name; |
| 1602 | |
| 1603 | init_timer(&m66592->timer); |
| 1604 | m66592->timer.function = m66592_timer; |
| 1605 | m66592->timer.data = (unsigned long)m66592; |
| 1606 | m66592->reg = reg; |
| 1607 | |
| 1608 | m66592->bi_bufnum = M66592_BASE_BUFNUM; |
| 1609 | |
Yoshihiro Shimoda | 15a1d5c | 2007-05-30 22:06:00 +0900 | [diff] [blame] | 1610 | ret = request_irq(irq, m66592_irq, IRQF_DISABLED | IRQF_SHARED, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1611 | udc_name, m66592); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1612 | if (ret < 0) { |
David Brownell | 0027492 | 2007-11-19 12:58:36 -0800 | [diff] [blame] | 1613 | pr_err("request_irq error (%d)\n", ret); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1614 | goto clean_up; |
| 1615 | } |
| 1616 | |
| 1617 | INIT_LIST_HEAD(&m66592->gadget.ep_list); |
| 1618 | m66592->gadget.ep0 = &m66592->ep[0].ep; |
| 1619 | INIT_LIST_HEAD(&m66592->gadget.ep0->ep_list); |
| 1620 | for (i = 0; i < M66592_MAX_NUM_PIPE; i++) { |
| 1621 | struct m66592_ep *ep = &m66592->ep[i]; |
| 1622 | |
| 1623 | if (i != 0) { |
| 1624 | INIT_LIST_HEAD(&m66592->ep[i].ep.ep_list); |
| 1625 | list_add_tail(&m66592->ep[i].ep.ep_list, |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1626 | &m66592->gadget.ep_list); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1627 | } |
| 1628 | ep->m66592 = m66592; |
| 1629 | INIT_LIST_HEAD(&ep->queue); |
| 1630 | ep->ep.name = m66592_ep_name[i]; |
| 1631 | ep->ep.ops = &m66592_ep_ops; |
| 1632 | ep->ep.maxpacket = 512; |
| 1633 | } |
| 1634 | m66592->ep[0].ep.maxpacket = 64; |
| 1635 | m66592->ep[0].pipenum = 0; |
| 1636 | m66592->ep[0].fifoaddr = M66592_CFIFO; |
| 1637 | m66592->ep[0].fifosel = M66592_CFIFOSEL; |
| 1638 | m66592->ep[0].fifoctr = M66592_CFIFOCTR; |
| 1639 | m66592->ep[0].fifotrn = 0; |
| 1640 | m66592->ep[0].pipectr = get_pipectr_addr(0); |
| 1641 | m66592->pipenum2ep[0] = &m66592->ep[0]; |
| 1642 | m66592->epaddr2ep[0] = &m66592->ep[0]; |
| 1643 | |
| 1644 | the_controller = m66592; |
| 1645 | |
| 1646 | m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL); |
| 1647 | if (m66592->ep0_req == NULL) |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1648 | goto clean_up2; |
| 1649 | m66592->ep0_req->complete = nop_completion; |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1650 | |
| 1651 | init_controller(m66592); |
| 1652 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1653 | dev_info(&pdev->dev, "version %s\n", DRIVER_VERSION); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1654 | return 0; |
| 1655 | |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1656 | clean_up2: |
| 1657 | free_irq(irq, m66592); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1658 | clean_up: |
| 1659 | if (m66592) { |
| 1660 | if (m66592->ep0_req) |
| 1661 | m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req); |
| 1662 | kfree(m66592); |
| 1663 | } |
| 1664 | if (reg) |
| 1665 | iounmap(reg); |
| 1666 | |
| 1667 | return ret; |
| 1668 | } |
| 1669 | |
| 1670 | /*-------------------------------------------------------------------------*/ |
| 1671 | static struct platform_driver m66592_driver = { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1672 | .remove = __exit_p(m66592_remove), |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1673 | .driver = { |
| 1674 | .name = (char *) udc_name, |
Kay Sievers | f34c32f | 2008-04-10 21:29:21 -0700 | [diff] [blame] | 1675 | .owner = THIS_MODULE, |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1676 | }, |
| 1677 | }; |
| 1678 | |
| 1679 | static int __init m66592_udc_init(void) |
| 1680 | { |
Yoshihiro Shimoda | 598f22e | 2007-07-17 21:01:17 +0900 | [diff] [blame] | 1681 | return platform_driver_probe(&m66592_driver, m66592_probe); |
Yoshihiro Shimoda | 4cf2503 | 2007-05-10 13:18:23 +0900 | [diff] [blame] | 1682 | } |
| 1683 | module_init(m66592_udc_init); |
| 1684 | |
| 1685 | static void __exit m66592_udc_cleanup(void) |
| 1686 | { |
| 1687 | platform_driver_unregister(&m66592_driver); |
| 1688 | } |
| 1689 | module_exit(m66592_udc_cleanup); |