Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Renesas USB driver |
| 3 | * |
| 4 | * Copyright (C) 2011 Renesas Solutions Corp. |
| 5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the Free Software |
| 14 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 15 | * |
| 16 | */ |
| 17 | #include <linux/io.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/usb/ch9.h> |
| 21 | #include <linux/usb/gadget.h> |
| 22 | #include "common.h" |
| 23 | |
| 24 | /* |
| 25 | * struct |
| 26 | */ |
| 27 | struct usbhsg_request { |
| 28 | struct usb_request req; |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 29 | struct usbhs_pkt pkt; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 30 | }; |
| 31 | |
| 32 | #define EP_NAME_SIZE 8 |
| 33 | struct usbhsg_gpriv; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 34 | struct usbhsg_uep { |
| 35 | struct usb_ep ep; |
| 36 | struct usbhs_pipe *pipe; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 37 | |
| 38 | char ep_name[EP_NAME_SIZE]; |
| 39 | |
| 40 | struct usbhsg_gpriv *gpriv; |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 41 | struct usbhs_pkt_handle *handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 42 | }; |
| 43 | |
| 44 | struct usbhsg_gpriv { |
| 45 | struct usb_gadget gadget; |
| 46 | struct usbhs_mod mod; |
| 47 | |
| 48 | struct usbhsg_uep *uep; |
| 49 | int uep_size; |
| 50 | |
| 51 | struct usb_gadget_driver *driver; |
| 52 | |
| 53 | u32 status; |
| 54 | #define USBHSG_STATUS_STARTED (1 << 0) |
| 55 | #define USBHSG_STATUS_REGISTERD (1 << 1) |
| 56 | #define USBHSG_STATUS_WEDGE (1 << 2) |
| 57 | }; |
| 58 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 59 | struct usbhsg_recip_handle { |
| 60 | char *name; |
| 61 | int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 62 | struct usb_ctrlrequest *ctrl); |
| 63 | int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 64 | struct usb_ctrlrequest *ctrl); |
| 65 | int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 66 | struct usb_ctrlrequest *ctrl); |
| 67 | }; |
| 68 | |
| 69 | /* |
| 70 | * macro |
| 71 | */ |
| 72 | #define usbhsg_priv_to_gpriv(priv) \ |
| 73 | container_of( \ |
| 74 | usbhs_mod_get(priv, USBHS_GADGET), \ |
| 75 | struct usbhsg_gpriv, mod) |
| 76 | |
| 77 | #define __usbhsg_for_each_uep(start, pos, g, i) \ |
| 78 | for (i = start, pos = (g)->uep; \ |
| 79 | i < (g)->uep_size; \ |
| 80 | i++, pos = (g)->uep + i) |
| 81 | |
| 82 | #define usbhsg_for_each_uep(pos, gpriv, i) \ |
| 83 | __usbhsg_for_each_uep(1, pos, gpriv, i) |
| 84 | |
| 85 | #define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ |
| 86 | __usbhsg_for_each_uep(0, pos, gpriv, i) |
| 87 | |
| 88 | #define usbhsg_gadget_to_gpriv(g)\ |
| 89 | container_of(g, struct usbhsg_gpriv, gadget) |
| 90 | |
| 91 | #define usbhsg_req_to_ureq(r)\ |
| 92 | container_of(r, struct usbhsg_request, req) |
| 93 | |
| 94 | #define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 95 | #define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
| 96 | #define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) |
| 97 | #define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) |
| 98 | #define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) |
| 99 | #define usbhsg_uep_to_gpriv(u) ((u)->gpriv) |
| 100 | #define usbhsg_uep_to_pipe(u) ((u)->pipe) |
| 101 | #define usbhsg_pipe_to_uep(p) ((p)->mod_private) |
| 102 | #define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) |
| 103 | |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 104 | #define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
| 105 | #define usbhsg_pkt_to_ureq(i) \ |
| 106 | container_of(i, struct usbhsg_request, pkt) |
| 107 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 108 | #define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
| 109 | |
| 110 | /* status */ |
| 111 | #define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) |
| 112 | #define usbhsg_status_set(gp, b) (gp->status |= b) |
| 113 | #define usbhsg_status_clr(gp, b) (gp->status &= ~b) |
| 114 | #define usbhsg_status_has(gp, b) (gp->status & b) |
| 115 | |
| 116 | /* |
| 117 | * list push/pop |
| 118 | */ |
| 119 | static void usbhsg_queue_push(struct usbhsg_uep *uep, |
| 120 | struct usbhsg_request *ureq) |
| 121 | { |
| 122 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 123 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 124 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame] | 125 | struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
Kuninori Morimoto | 659d495 | 2011-06-06 14:18:23 +0900 | [diff] [blame] | 126 | struct usb_request *req = &ureq->req; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 127 | |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 128 | usbhs_pkt_push(pipe, pkt, uep->handler, |
| 129 | req->buf, req->length, req->zero); |
Kuninori Morimoto | 659d495 | 2011-06-06 14:18:23 +0900 | [diff] [blame] | 130 | req->actual = 0; |
| 131 | req->status = -EINPROGRESS; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 132 | |
| 133 | dev_dbg(dev, "pipe %d : queue push (%d)\n", |
| 134 | usbhs_pipe_number(pipe), |
Kuninori Morimoto | 659d495 | 2011-06-06 14:18:23 +0900 | [diff] [blame] | 135 | req->length); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 136 | } |
| 137 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 138 | static void usbhsg_queue_start(struct usbhsg_uep *uep) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 139 | { |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 140 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 141 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 142 | usbhs_pkt_start(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
| 146 | struct usbhsg_request *ureq, |
| 147 | int status) |
| 148 | { |
| 149 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 150 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 151 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 152 | |
| 153 | dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); |
| 154 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 155 | ureq->req.status = status; |
| 156 | ureq->req.complete(&uep->ep, &ureq->req); |
| 157 | |
| 158 | /* more request ? */ |
| 159 | if (0 == status) |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 160 | usbhsg_queue_start(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 161 | } |
| 162 | |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 163 | static void usbhsg_queue_done(struct usbhs_pkt *pkt) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 164 | { |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 165 | struct usbhs_pipe *pipe = pkt->pipe; |
| 166 | struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); |
| 167 | struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 168 | |
Kuninori Morimoto | 659d495 | 2011-06-06 14:18:23 +0900 | [diff] [blame] | 169 | ureq->req.actual = pkt->actual; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 170 | |
Kuninori Morimoto | 659d495 | 2011-06-06 14:18:23 +0900 | [diff] [blame] | 171 | usbhsg_queue_pop(uep, ureq, 0); |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 172 | } |
| 173 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 174 | /* |
| 175 | * USB_TYPE_STANDARD / clear feature functions |
| 176 | */ |
| 177 | static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, |
| 178 | struct usbhsg_uep *uep, |
| 179 | struct usb_ctrlrequest *ctrl) |
| 180 | { |
| 181 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 182 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 183 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
| 184 | |
| 185 | usbhs_dcp_control_transfer_done(pipe); |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, |
| 191 | struct usbhsg_uep *uep, |
| 192 | struct usb_ctrlrequest *ctrl) |
| 193 | { |
| 194 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 195 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 196 | |
| 197 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 198 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 199 | usbhs_pipe_clear_sequence(pipe); |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 200 | usbhs_pipe_enable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
| 204 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 205 | return 0; |
| 206 | } |
| 207 | |
| 208 | struct usbhsg_recip_handle req_clear_feature = { |
| 209 | .name = "clear feature", |
| 210 | .device = usbhsg_recip_handler_std_control_done, |
| 211 | .interface = usbhsg_recip_handler_std_control_done, |
| 212 | .endpoint = usbhsg_recip_handler_std_clear_endpoint, |
| 213 | }; |
| 214 | |
| 215 | /* |
| 216 | * USB_TYPE handler |
| 217 | */ |
| 218 | static int usbhsg_recip_run_handle(struct usbhs_priv *priv, |
| 219 | struct usbhsg_recip_handle *handler, |
| 220 | struct usb_ctrlrequest *ctrl) |
| 221 | { |
| 222 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 223 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 224 | struct usbhsg_uep *uep; |
| 225 | int recip = ctrl->bRequestType & USB_RECIP_MASK; |
| 226 | int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
| 227 | int ret; |
| 228 | int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
| 229 | struct usb_ctrlrequest *ctrl); |
| 230 | char *msg; |
| 231 | |
| 232 | uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); |
Kuninori Morimoto | 9a28b7b | 2011-04-21 14:10:12 +0900 | [diff] [blame] | 233 | if (!usbhsg_uep_to_pipe(uep)) { |
| 234 | dev_err(dev, "wrong recip request\n"); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 235 | ret = -EINVAL; |
| 236 | goto usbhsg_recip_run_handle_end; |
Kuninori Morimoto | 9a28b7b | 2011-04-21 14:10:12 +0900 | [diff] [blame] | 237 | } |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 238 | |
| 239 | switch (recip) { |
| 240 | case USB_RECIP_DEVICE: |
| 241 | msg = "DEVICE"; |
| 242 | func = handler->device; |
| 243 | break; |
| 244 | case USB_RECIP_INTERFACE: |
| 245 | msg = "INTERFACE"; |
| 246 | func = handler->interface; |
| 247 | break; |
| 248 | case USB_RECIP_ENDPOINT: |
| 249 | msg = "ENDPOINT"; |
| 250 | func = handler->endpoint; |
| 251 | break; |
| 252 | default: |
| 253 | dev_warn(dev, "unsupported RECIP(%d)\n", recip); |
| 254 | func = NULL; |
| 255 | ret = -EINVAL; |
| 256 | } |
| 257 | |
| 258 | if (func) { |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 259 | unsigned long flags; |
| 260 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 261 | dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 262 | |
| 263 | /******************** spin lock ********************/ |
| 264 | usbhs_lock(priv, flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 265 | ret = func(priv, uep, ctrl); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 266 | usbhs_unlock(priv, flags); |
| 267 | /******************** spin unlock ******************/ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 268 | } |
| 269 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 270 | usbhsg_recip_run_handle_end: |
| 271 | usbhsg_queue_start(uep); |
| 272 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 273 | return ret; |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * irq functions |
| 278 | * |
| 279 | * it will be called from usbhs_interrupt |
| 280 | */ |
| 281 | static int usbhsg_irq_dev_state(struct usbhs_priv *priv, |
| 282 | struct usbhs_irq_state *irq_state) |
| 283 | { |
| 284 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 285 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 286 | |
| 287 | gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state); |
| 288 | |
| 289 | dev_dbg(dev, "state = %x : speed : %d\n", |
| 290 | usbhs_status_get_device_state(irq_state), |
| 291 | gpriv->gadget.speed); |
| 292 | |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, |
| 297 | struct usbhs_irq_state *irq_state) |
| 298 | { |
| 299 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 300 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 301 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
| 302 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 303 | struct usb_ctrlrequest ctrl; |
| 304 | struct usbhsg_recip_handle *recip_handler = NULL; |
| 305 | int stage = usbhs_status_get_ctrl_stage(irq_state); |
| 306 | int ret = 0; |
| 307 | |
| 308 | dev_dbg(dev, "stage = %d\n", stage); |
| 309 | |
| 310 | /* |
| 311 | * see Manual |
| 312 | * |
| 313 | * "Operation" |
| 314 | * - "Interrupt Function" |
| 315 | * - "Control Transfer Stage Transition Interrupt" |
| 316 | * - Fig. "Control Transfer Stage Transitions" |
| 317 | */ |
| 318 | |
| 319 | switch (stage) { |
| 320 | case READ_DATA_STAGE: |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 321 | dcp->handler = &usbhs_fifo_push_handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 322 | break; |
| 323 | case WRITE_DATA_STAGE: |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 324 | dcp->handler = &usbhs_fifo_pop_handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 325 | break; |
| 326 | case NODATA_STATUS_STAGE: |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 327 | dcp->handler = &usbhs_ctrl_stage_end_handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 328 | break; |
| 329 | default: |
| 330 | return ret; |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * get usb request |
| 335 | */ |
| 336 | usbhs_usbreq_get_val(priv, &ctrl); |
| 337 | |
| 338 | switch (ctrl.bRequestType & USB_TYPE_MASK) { |
| 339 | case USB_TYPE_STANDARD: |
| 340 | switch (ctrl.bRequest) { |
| 341 | case USB_REQ_CLEAR_FEATURE: |
| 342 | recip_handler = &req_clear_feature; |
| 343 | break; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * setup stage / run recip |
| 349 | */ |
| 350 | if (recip_handler) |
| 351 | ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); |
| 352 | else |
| 353 | ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); |
| 354 | |
| 355 | if (ret < 0) |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 356 | usbhs_pipe_stall(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 357 | |
| 358 | return ret; |
| 359 | } |
| 360 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 361 | /* |
| 362 | * |
| 363 | * usb_dcp_ops |
| 364 | * |
| 365 | */ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 366 | static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
| 367 | { |
| 368 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 8a2c225 | 2011-06-06 14:18:33 +0900 | [diff] [blame] | 369 | struct usbhs_pkt *pkt; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 370 | |
Kuninori Morimoto | e8d548d | 2011-06-06 14:18:03 +0900 | [diff] [blame] | 371 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 372 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 373 | while (1) { |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 374 | pkt = usbhs_pkt_pop(pipe, NULL); |
Kuninori Morimoto | 8a2c225 | 2011-06-06 14:18:33 +0900 | [diff] [blame] | 375 | if (!pkt) |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 376 | break; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 377 | } |
| 378 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 379 | return 0; |
| 380 | } |
| 381 | |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 382 | static void usbhsg_uep_init(struct usbhsg_gpriv *gpriv) |
| 383 | { |
| 384 | int i; |
| 385 | struct usbhsg_uep *uep; |
| 386 | |
| 387 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) |
| 388 | uep->pipe = NULL; |
| 389 | } |
| 390 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 391 | /* |
| 392 | * |
| 393 | * usb_ep_ops |
| 394 | * |
| 395 | */ |
| 396 | static int usbhsg_ep_enable(struct usb_ep *ep, |
| 397 | const struct usb_endpoint_descriptor *desc) |
| 398 | { |
| 399 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 400 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 401 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
| 402 | struct usbhs_pipe *pipe; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 403 | int ret = -EIO; |
| 404 | |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 405 | /* |
| 406 | * if it already have pipe, |
| 407 | * nothing to do |
| 408 | */ |
| 409 | if (uep->pipe) |
| 410 | return 0; |
| 411 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 412 | pipe = usbhs_pipe_malloc(priv, desc); |
| 413 | if (pipe) { |
| 414 | uep->pipe = pipe; |
| 415 | pipe->mod_private = uep; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 416 | |
| 417 | if (usb_endpoint_dir_in(desc)) |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 418 | uep->handler = &usbhs_fifo_push_handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 419 | else |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 420 | uep->handler = &usbhs_fifo_pop_handler; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 421 | |
| 422 | ret = 0; |
| 423 | } |
Kuninori Morimoto | cb96632 | 2011-04-21 14:10:08 +0900 | [diff] [blame] | 424 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 425 | return ret; |
| 426 | } |
| 427 | |
| 428 | static int usbhsg_ep_disable(struct usb_ep *ep) |
| 429 | { |
| 430 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 431 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 432 | return usbhsg_pipe_disable(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, |
| 436 | gfp_t gfp_flags) |
| 437 | { |
| 438 | struct usbhsg_request *ureq; |
| 439 | |
| 440 | ureq = kzalloc(sizeof *ureq, gfp_flags); |
| 441 | if (!ureq) |
| 442 | return NULL; |
| 443 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame] | 444 | usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
| 445 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 446 | return &ureq->req; |
| 447 | } |
| 448 | |
| 449 | static void usbhsg_ep_free_request(struct usb_ep *ep, |
| 450 | struct usb_request *req) |
| 451 | { |
| 452 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
| 453 | |
Kuninori Morimoto | 6acb95d | 2011-06-06 14:18:16 +0900 | [diff] [blame] | 454 | WARN_ON(!list_empty(&ureq->pkt.node)); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 455 | kfree(ureq); |
| 456 | } |
| 457 | |
| 458 | static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, |
| 459 | gfp_t gfp_flags) |
| 460 | { |
| 461 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 462 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
| 463 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
| 464 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 465 | |
| 466 | /* param check */ |
| 467 | if (usbhsg_is_not_connected(gpriv) || |
| 468 | unlikely(!gpriv->driver) || |
| 469 | unlikely(!pipe)) |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 470 | return -ESHUTDOWN; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 471 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 472 | usbhsg_queue_push(uep, ureq); |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 473 | usbhsg_queue_start(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 474 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 475 | return 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) |
| 479 | { |
| 480 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 481 | struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 482 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 483 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 484 | usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 485 | usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
| 486 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 487 | return 0; |
| 488 | } |
| 489 | |
| 490 | static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) |
| 491 | { |
| 492 | struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
| 493 | struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
| 494 | struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 495 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 496 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 497 | unsigned long flags; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 498 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 499 | usbhsg_pipe_disable(uep); |
| 500 | |
| 501 | dev_dbg(dev, "set halt %d (pipe %d)\n", |
| 502 | halt, usbhs_pipe_number(pipe)); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 503 | |
| 504 | /******************** spin lock ********************/ |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 505 | usbhs_lock(priv, flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 506 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 507 | if (halt) |
| 508 | usbhs_pipe_stall(pipe); |
| 509 | else |
| 510 | usbhs_pipe_disable(pipe); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 511 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 512 | if (halt && wedge) |
| 513 | usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); |
| 514 | else |
| 515 | usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 516 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 517 | usbhs_unlock(priv, flags); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 518 | /******************** spin unlock ******************/ |
| 519 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 520 | return 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) |
| 524 | { |
| 525 | return __usbhsg_ep_set_halt_wedge(ep, value, 0); |
| 526 | } |
| 527 | |
| 528 | static int usbhsg_ep_set_wedge(struct usb_ep *ep) |
| 529 | { |
| 530 | return __usbhsg_ep_set_halt_wedge(ep, 1, 1); |
| 531 | } |
| 532 | |
| 533 | static struct usb_ep_ops usbhsg_ep_ops = { |
| 534 | .enable = usbhsg_ep_enable, |
| 535 | .disable = usbhsg_ep_disable, |
| 536 | |
| 537 | .alloc_request = usbhsg_ep_alloc_request, |
| 538 | .free_request = usbhsg_ep_free_request, |
| 539 | |
| 540 | .queue = usbhsg_ep_queue, |
| 541 | .dequeue = usbhsg_ep_dequeue, |
| 542 | |
| 543 | .set_halt = usbhsg_ep_set_halt, |
| 544 | .set_wedge = usbhsg_ep_set_wedge, |
| 545 | }; |
| 546 | |
| 547 | /* |
| 548 | * usb module start/end |
| 549 | */ |
| 550 | static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) |
| 551 | { |
| 552 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 553 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 554 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
| 555 | struct device *dev = usbhs_priv_to_dev(priv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 556 | unsigned long flags; |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 557 | int ret = 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 558 | |
| 559 | /******************** spin lock ********************/ |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 560 | usbhs_lock(priv, flags); |
| 561 | |
| 562 | usbhsg_status_set(gpriv, status); |
| 563 | if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
| 564 | usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) |
| 565 | ret = -1; /* not ready */ |
| 566 | |
| 567 | usbhs_unlock(priv, flags); |
| 568 | /******************** spin unlock ********************/ |
| 569 | |
| 570 | if (ret < 0) |
| 571 | return 0; /* not ready is not error */ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 572 | |
| 573 | /* |
| 574 | * enable interrupt and systems if ready |
| 575 | */ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 576 | dev_dbg(dev, "start gadget\n"); |
| 577 | |
| 578 | /* |
| 579 | * pipe initialize and enable DCP |
| 580 | */ |
Kuninori Morimoto | 4bd0481 | 2011-06-06 14:18:07 +0900 | [diff] [blame] | 581 | usbhs_pipe_init(priv, |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 582 | usbhsg_queue_done); |
| 583 | usbhs_fifo_init(priv); |
Kuninori Morimoto | 409ba9e | 2011-04-26 09:21:35 +0900 | [diff] [blame] | 584 | usbhsg_uep_init(gpriv); |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 585 | |
| 586 | /* dcp init */ |
| 587 | dcp->pipe = usbhs_dcp_malloc(priv); |
| 588 | dcp->pipe->mod_private = dcp; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 589 | |
| 590 | /* |
| 591 | * system config enble |
| 592 | * - HI speed |
| 593 | * - function |
| 594 | * - usb module |
| 595 | */ |
| 596 | usbhs_sys_hispeed_ctrl(priv, 1); |
| 597 | usbhs_sys_function_ctrl(priv, 1); |
| 598 | usbhs_sys_usb_ctrl(priv, 1); |
| 599 | |
| 600 | /* |
| 601 | * enable irq callback |
| 602 | */ |
| 603 | mod->irq_dev_state = usbhsg_irq_dev_state; |
| 604 | mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 605 | usbhs_irq_callback_update(priv, mod); |
| 606 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 607 | return 0; |
| 608 | } |
| 609 | |
| 610 | static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) |
| 611 | { |
| 612 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 613 | struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
| 614 | struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
| 615 | struct device *dev = usbhs_priv_to_dev(priv); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 616 | unsigned long flags; |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 617 | int ret = 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 618 | |
| 619 | /******************** spin lock ********************/ |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 620 | usbhs_lock(priv, flags); |
| 621 | |
| 622 | usbhsg_status_clr(gpriv, status); |
| 623 | if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
| 624 | !usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) |
| 625 | ret = -1; /* already done */ |
| 626 | |
| 627 | usbhs_unlock(priv, flags); |
| 628 | /******************** spin unlock ********************/ |
| 629 | |
| 630 | if (ret < 0) |
| 631 | return 0; /* already done is not error */ |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 632 | |
| 633 | /* |
| 634 | * disable interrupt and systems if 1st try |
| 635 | */ |
Kuninori Morimoto | dad6739 | 2011-06-06 14:18:28 +0900 | [diff] [blame] | 636 | usbhs_fifo_quit(priv); |
| 637 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 638 | /* disable all irq */ |
| 639 | mod->irq_dev_state = NULL; |
| 640 | mod->irq_ctrl_stage = NULL; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 641 | usbhs_irq_callback_update(priv, mod); |
| 642 | |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 643 | gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
| 644 | |
| 645 | /* disable sys */ |
| 646 | usbhs_sys_hispeed_ctrl(priv, 0); |
| 647 | usbhs_sys_function_ctrl(priv, 0); |
| 648 | usbhs_sys_usb_ctrl(priv, 0); |
| 649 | |
Kuninori Morimoto | 97664a2 | 2011-06-06 14:18:38 +0900 | [diff] [blame^] | 650 | usbhsg_pipe_disable(dcp); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 651 | |
| 652 | if (gpriv->driver && |
| 653 | gpriv->driver->disconnect) |
| 654 | gpriv->driver->disconnect(&gpriv->gadget); |
| 655 | |
| 656 | dev_dbg(dev, "stop gadget\n"); |
| 657 | |
| 658 | return 0; |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | /* |
| 662 | * |
| 663 | * linux usb function |
| 664 | * |
| 665 | */ |
| 666 | struct usbhsg_gpriv *the_controller; |
| 667 | int usb_gadget_probe_driver(struct usb_gadget_driver *driver, |
| 668 | int (*bind)(struct usb_gadget *)) |
| 669 | { |
| 670 | struct usbhsg_gpriv *gpriv = the_controller; |
| 671 | struct usbhs_priv *priv; |
| 672 | struct device *dev; |
| 673 | int ret; |
| 674 | |
| 675 | if (!bind || |
| 676 | !driver || |
| 677 | !driver->setup || |
| 678 | driver->speed != USB_SPEED_HIGH) |
| 679 | return -EINVAL; |
| 680 | if (!gpriv) |
| 681 | return -ENODEV; |
| 682 | if (gpriv->driver) |
| 683 | return -EBUSY; |
| 684 | |
| 685 | dev = usbhsg_gpriv_to_dev(gpriv); |
| 686 | priv = usbhsg_gpriv_to_priv(gpriv); |
| 687 | |
| 688 | /* first hook up the driver ... */ |
| 689 | gpriv->driver = driver; |
| 690 | gpriv->gadget.dev.driver = &driver->driver; |
| 691 | |
| 692 | ret = device_add(&gpriv->gadget.dev); |
| 693 | if (ret) { |
| 694 | dev_err(dev, "device_add error %d\n", ret); |
| 695 | goto add_fail; |
| 696 | } |
| 697 | |
| 698 | ret = bind(&gpriv->gadget); |
| 699 | if (ret) { |
| 700 | dev_err(dev, "bind to driver %s error %d\n", |
| 701 | driver->driver.name, ret); |
| 702 | goto bind_fail; |
| 703 | } |
| 704 | |
| 705 | dev_dbg(dev, "bind %s\n", driver->driver.name); |
| 706 | |
| 707 | return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
| 708 | |
| 709 | bind_fail: |
| 710 | device_del(&gpriv->gadget.dev); |
| 711 | add_fail: |
| 712 | gpriv->driver = NULL; |
| 713 | gpriv->gadget.dev.driver = NULL; |
| 714 | |
| 715 | return ret; |
| 716 | } |
| 717 | EXPORT_SYMBOL(usb_gadget_probe_driver); |
| 718 | |
| 719 | int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) |
| 720 | { |
| 721 | struct usbhsg_gpriv *gpriv = the_controller; |
| 722 | struct usbhs_priv *priv; |
| 723 | struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
| 724 | |
| 725 | if (!gpriv) |
| 726 | return -ENODEV; |
| 727 | |
| 728 | if (!driver || |
| 729 | !driver->unbind || |
| 730 | driver != gpriv->driver) |
| 731 | return -EINVAL; |
| 732 | |
| 733 | dev = usbhsg_gpriv_to_dev(gpriv); |
| 734 | priv = usbhsg_gpriv_to_priv(gpriv); |
| 735 | |
| 736 | usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); |
| 737 | device_del(&gpriv->gadget.dev); |
| 738 | gpriv->driver = NULL; |
| 739 | |
| 740 | if (driver->disconnect) |
| 741 | driver->disconnect(&gpriv->gadget); |
| 742 | |
| 743 | driver->unbind(&gpriv->gadget); |
| 744 | dev_dbg(dev, "unbind %s\n", driver->driver.name); |
| 745 | |
| 746 | return 0; |
| 747 | } |
| 748 | EXPORT_SYMBOL(usb_gadget_unregister_driver); |
| 749 | |
| 750 | /* |
| 751 | * usb gadget ops |
| 752 | */ |
| 753 | static int usbhsg_get_frame(struct usb_gadget *gadget) |
| 754 | { |
| 755 | struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
| 756 | struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
| 757 | |
| 758 | return usbhs_frame_get_num(priv); |
| 759 | } |
| 760 | |
| 761 | static struct usb_gadget_ops usbhsg_gadget_ops = { |
| 762 | .get_frame = usbhsg_get_frame, |
| 763 | }; |
| 764 | |
| 765 | static int usbhsg_start(struct usbhs_priv *priv) |
| 766 | { |
| 767 | return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); |
| 768 | } |
| 769 | |
| 770 | static int usbhsg_stop(struct usbhs_priv *priv) |
| 771 | { |
| 772 | return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); |
| 773 | } |
| 774 | |
| 775 | int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv) |
| 776 | { |
| 777 | struct usbhsg_gpriv *gpriv; |
| 778 | struct usbhsg_uep *uep; |
| 779 | struct device *dev = usbhs_priv_to_dev(priv); |
| 780 | int pipe_size = usbhs_get_dparam(priv, pipe_size); |
| 781 | int i; |
| 782 | |
| 783 | gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); |
| 784 | if (!gpriv) { |
| 785 | dev_err(dev, "Could not allocate gadget priv\n"); |
| 786 | return -ENOMEM; |
| 787 | } |
| 788 | |
| 789 | uep = kzalloc(sizeof(struct usbhsg_uep) * pipe_size, GFP_KERNEL); |
| 790 | if (!uep) { |
| 791 | dev_err(dev, "Could not allocate ep\n"); |
| 792 | goto usbhs_mod_gadget_probe_err_gpriv; |
| 793 | } |
| 794 | |
| 795 | /* |
| 796 | * CAUTION |
| 797 | * |
| 798 | * There is no guarantee that it is possible to access usb module here. |
| 799 | * Don't accesses to it. |
| 800 | * The accesse will be enable after "usbhsg_start" |
| 801 | */ |
| 802 | |
| 803 | /* |
| 804 | * register itself |
| 805 | */ |
| 806 | usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); |
| 807 | |
| 808 | /* init gpriv */ |
| 809 | gpriv->mod.name = "gadget"; |
| 810 | gpriv->mod.start = usbhsg_start; |
| 811 | gpriv->mod.stop = usbhsg_stop; |
| 812 | gpriv->uep = uep; |
| 813 | gpriv->uep_size = pipe_size; |
| 814 | usbhsg_status_init(gpriv); |
| 815 | |
| 816 | /* |
| 817 | * init gadget |
| 818 | */ |
| 819 | device_initialize(&gpriv->gadget.dev); |
| 820 | dev_set_name(&gpriv->gadget.dev, "gadget"); |
| 821 | gpriv->gadget.dev.parent = dev; |
| 822 | gpriv->gadget.name = "renesas_usbhs_udc"; |
| 823 | gpriv->gadget.ops = &usbhsg_gadget_ops; |
| 824 | gpriv->gadget.is_dualspeed = 1; |
| 825 | |
| 826 | INIT_LIST_HEAD(&gpriv->gadget.ep_list); |
| 827 | |
| 828 | /* |
| 829 | * init usb_ep |
| 830 | */ |
| 831 | usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { |
| 832 | uep->gpriv = gpriv; |
| 833 | snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); |
| 834 | |
| 835 | uep->ep.name = uep->ep_name; |
| 836 | uep->ep.ops = &usbhsg_ep_ops; |
| 837 | INIT_LIST_HEAD(&uep->ep.ep_list); |
Kuninori Morimoto | 2f98382 | 2011-04-05 11:40:54 +0900 | [diff] [blame] | 838 | |
| 839 | /* init DCP */ |
| 840 | if (usbhsg_is_dcp(uep)) { |
| 841 | gpriv->gadget.ep0 = &uep->ep; |
| 842 | uep->ep.maxpacket = 64; |
| 843 | } |
| 844 | /* init normal pipe */ |
| 845 | else { |
| 846 | uep->ep.maxpacket = 512; |
| 847 | list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | the_controller = gpriv; |
| 852 | |
| 853 | dev_info(dev, "gadget probed\n"); |
| 854 | |
| 855 | return 0; |
| 856 | |
| 857 | usbhs_mod_gadget_probe_err_gpriv: |
| 858 | kfree(gpriv); |
| 859 | |
| 860 | return -ENOMEM; |
| 861 | } |
| 862 | |
| 863 | void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv) |
| 864 | { |
| 865 | struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
| 866 | |
| 867 | kfree(gpriv); |
| 868 | } |