Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1 | /* |
| 2 | * drivers/usb/gadget/emxx_udc.c |
| 3 | * EMXX FCD (Function Controller Driver) for USB. |
| 4 | * |
| 5 | * Copyright (C) 2010 Renesas Electronics Corporation |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 |
| 9 | * as published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | #include <linux/kernel.h> |
Paul Gortmaker | 0af61e6 | 2015-10-11 15:47:34 -0400 | [diff] [blame^] | 18 | #include <linux/init.h> |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 19 | #include <linux/platform_device.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/ioport.h> |
| 22 | #include <linux/slab.h> |
| 23 | #include <linux/errno.h> |
| 24 | #include <linux/init.h> |
| 25 | #include <linux/list.h> |
| 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/proc_fs.h> |
| 28 | #include <linux/clk.h> |
| 29 | #include <linux/ctype.h> |
| 30 | #include <linux/string.h> |
| 31 | #include <linux/dma-mapping.h> |
| 32 | #include <linux/workqueue.h> |
Sachin Kamat | a790ebc | 2014-06-23 11:43:08 +0530 | [diff] [blame] | 33 | #include <linux/device.h> |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 34 | |
| 35 | #include <linux/usb/ch9.h> |
| 36 | #include <linux/usb/gadget.h> |
| 37 | |
| 38 | #include <linux/irq.h> |
| 39 | #include <linux/gpio.h> |
| 40 | |
| 41 | #include "emxx_udc.h" |
| 42 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 43 | #define DMA_ADDR_INVALID (~(dma_addr_t)0) |
| 44 | |
| 45 | static const char driver_name[] = "emxx_udc"; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 46 | |
| 47 | /*===========================================================================*/ |
| 48 | /* Prototype */ |
| 49 | static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *, struct nbu2ss_ep *); |
| 50 | static void _nbu2ss_ep0_enable(struct nbu2ss_udc *); |
| 51 | /*static void _nbu2ss_ep0_disable(struct nbu2ss_udc *);*/ |
| 52 | static void _nbu2ss_ep_done(struct nbu2ss_ep *, struct nbu2ss_req *, int); |
| 53 | static void _nbu2ss_set_test_mode(struct nbu2ss_udc *, u32 mode); |
| 54 | static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs); |
| 55 | |
| 56 | static int _nbu2ss_pullup(struct nbu2ss_udc *, int); |
| 57 | static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *); |
| 58 | |
| 59 | /*===========================================================================*/ |
| 60 | /* Macro */ |
| 61 | #define _nbu2ss_zero_len_pkt(udc, epnum) \ |
| 62 | _nbu2ss_ep_in_end(udc, epnum, 0, 0) |
| 63 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 64 | /*===========================================================================*/ |
| 65 | /* Global */ |
| 66 | struct nbu2ss_udc udc_controller; |
| 67 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 68 | /*-------------------------------------------------------------------------*/ |
| 69 | /* Read */ |
| 70 | static inline u32 _nbu2ss_readl(void *address) |
| 71 | { |
Andrew Plummer | ce1e3eb | 2014-08-30 19:43:02 +0100 | [diff] [blame] | 72 | return __raw_readl(address); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | /*-------------------------------------------------------------------------*/ |
| 76 | /* Write */ |
| 77 | static inline void _nbu2ss_writel(void *address, u32 udata) |
| 78 | { |
Andrew Plummer | ce1e3eb | 2014-08-30 19:43:02 +0100 | [diff] [blame] | 79 | __raw_writel(udata, address); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | /*-------------------------------------------------------------------------*/ |
| 83 | /* Set Bit */ |
| 84 | static inline void _nbu2ss_bitset(void *address, u32 udata) |
| 85 | { |
| 86 | u32 reg_dt = __raw_readl(address) | (udata); |
Vincenzo Scotti | 7f39ae0 | 2014-09-09 23:06:25 +0200 | [diff] [blame] | 87 | |
Andrew Plummer | ce1e3eb | 2014-08-30 19:43:02 +0100 | [diff] [blame] | 88 | __raw_writel(reg_dt, address); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | /*-------------------------------------------------------------------------*/ |
| 92 | /* Clear Bit */ |
| 93 | static inline void _nbu2ss_bitclr(void *address, u32 udata) |
| 94 | { |
| 95 | u32 reg_dt = __raw_readl(address) & ~(udata); |
Vincenzo Scotti | 7f39ae0 | 2014-09-09 23:06:25 +0200 | [diff] [blame] | 96 | |
Andrew Plummer | ce1e3eb | 2014-08-30 19:43:02 +0100 | [diff] [blame] | 97 | __raw_writel(reg_dt, address); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | #ifdef UDC_DEBUG_DUMP |
| 101 | /*-------------------------------------------------------------------------*/ |
| 102 | static void _nbu2ss_dump_register(struct nbu2ss_udc *udc) |
| 103 | { |
| 104 | int i; |
| 105 | u32 reg_data; |
| 106 | |
| 107 | pr_info("=== %s()\n", __func__); |
| 108 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 109 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 110 | pr_err("%s udc == NULL\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 111 | return; |
| 112 | } |
| 113 | |
| 114 | spin_unlock(&udc->lock); |
| 115 | |
Ebru Akagunduz | fb71d24 | 2014-10-02 23:32:06 +0300 | [diff] [blame] | 116 | dev_dbg(&udc->dev, "\n-USB REG-\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 117 | for (i = 0x0 ; i < USB_BASE_SIZE ; i += 16) { |
| 118 | reg_data = _nbu2ss_readl( |
| 119 | (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i)); |
Ebru Akagunduz | fb71d24 | 2014-10-02 23:32:06 +0300 | [diff] [blame] | 120 | dev_dbg(&udc->dev, "USB%04x =%08x", i, (int)reg_data); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 121 | |
| 122 | reg_data = _nbu2ss_readl( |
| 123 | (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 4)); |
Ebru Akagunduz | fb71d24 | 2014-10-02 23:32:06 +0300 | [diff] [blame] | 124 | dev_dbg(&udc->dev, " %08x", (int)reg_data); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 125 | |
| 126 | reg_data = _nbu2ss_readl( |
| 127 | (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 8)); |
Ebru Akagunduz | fb71d24 | 2014-10-02 23:32:06 +0300 | [diff] [blame] | 128 | dev_dbg(&udc->dev, " %08x", (int)reg_data); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 129 | |
| 130 | reg_data = _nbu2ss_readl( |
| 131 | (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 12)); |
Ebru Akagunduz | fb71d24 | 2014-10-02 23:32:06 +0300 | [diff] [blame] | 132 | dev_dbg(&udc->dev, " %08x\n", (int)reg_data); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 133 | |
| 134 | } |
| 135 | |
| 136 | spin_lock(&udc->lock); |
| 137 | } |
| 138 | #endif /* UDC_DEBUG_DUMP */ |
| 139 | |
| 140 | /*-------------------------------------------------------------------------*/ |
| 141 | /* Endpoint 0 Callback (Complete) */ |
| 142 | static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) |
| 143 | { |
| 144 | u8 recipient; |
| 145 | u16 selector; |
| 146 | u32 test_mode; |
| 147 | struct usb_ctrlrequest *p_ctrl; |
| 148 | struct nbu2ss_udc *udc; |
| 149 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 150 | if ((!_ep) || (!_req)) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 151 | return; |
| 152 | |
| 153 | udc = (struct nbu2ss_udc *)_req->context; |
| 154 | p_ctrl = &udc->ctrl; |
| 155 | if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 156 | |
| 157 | if (p_ctrl->bRequest == USB_REQ_SET_FEATURE) { |
| 158 | /*-------------------------------------------------*/ |
| 159 | /* SET_FEATURE */ |
| 160 | recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK); |
| 161 | selector = p_ctrl->wValue; |
| 162 | if ((recipient == USB_RECIP_DEVICE) && |
| 163 | (selector == USB_DEVICE_TEST_MODE)) { |
| 164 | test_mode = (u32)(p_ctrl->wIndex >> 8); |
| 165 | _nbu2ss_set_test_mode(udc, test_mode); |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /*-------------------------------------------------------------------------*/ |
| 172 | /* Initialization usb_request */ |
| 173 | static void _nbu2ss_create_ep0_packet( |
| 174 | struct nbu2ss_udc *udc, |
| 175 | void *p_buf, |
| 176 | unsigned length |
| 177 | ) |
| 178 | { |
| 179 | udc->ep0_req.req.buf = p_buf; |
| 180 | udc->ep0_req.req.length = length; |
| 181 | udc->ep0_req.req.dma = 0; |
| 182 | udc->ep0_req.req.zero = TRUE; |
| 183 | udc->ep0_req.req.complete = _nbu2ss_ep0_complete; |
| 184 | udc->ep0_req.req.status = -EINPROGRESS; |
| 185 | udc->ep0_req.req.context = udc; |
| 186 | udc->ep0_req.req.actual = 0; |
| 187 | } |
| 188 | |
| 189 | /*-------------------------------------------------------------------------*/ |
| 190 | /* Acquisition of the first address of RAM(FIFO) */ |
| 191 | static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc) |
| 192 | { |
| 193 | u32 num, buf_type; |
| 194 | u32 data, last_ram_adr, use_ram_size; |
| 195 | |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 196 | struct ep_regs *p_ep_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 197 | |
| 198 | last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2; |
| 199 | use_ram_size = 0; |
| 200 | |
| 201 | for (num = 0; num < NUM_ENDPOINTS - 1; num++) { |
| 202 | p_ep_regs = &udc->p_regs->EP_REGS[num]; |
| 203 | data = _nbu2ss_readl(&p_ep_regs->EP_PCKT_ADRS); |
| 204 | buf_type = _nbu2ss_readl(&p_ep_regs->EP_CONTROL) & EPn_BUF_TYPE; |
| 205 | if (buf_type == 0) { |
| 206 | /* Single Buffer */ |
| 207 | use_ram_size += (data & EPn_MPKT) / sizeof(u32); |
| 208 | } else { |
| 209 | /* Double Buffer */ |
| 210 | use_ram_size += ((data & EPn_MPKT) / sizeof(u32)) * 2; |
| 211 | } |
| 212 | |
| 213 | if ((data >> 16) > last_ram_adr) |
| 214 | last_ram_adr = data>>16; |
| 215 | } |
| 216 | |
| 217 | return last_ram_adr + use_ram_size; |
| 218 | } |
| 219 | |
| 220 | /*-------------------------------------------------------------------------*/ |
| 221 | /* Construction of Endpoint */ |
| 222 | static int _nbu2ss_ep_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 223 | { |
| 224 | u32 num; |
| 225 | u32 data; |
| 226 | u32 begin_adrs; |
| 227 | |
| 228 | if (ep->epnum == 0) |
| 229 | return -EINVAL; |
| 230 | |
| 231 | num = ep->epnum - 1; |
| 232 | |
| 233 | /*-------------------------------------------------------------*/ |
| 234 | /* RAM Transfer Address */ |
| 235 | begin_adrs = _nbu2ss_get_begin_ram_address(udc); |
| 236 | data = (begin_adrs << 16) | ep->ep.maxpacket; |
| 237 | _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, data); |
| 238 | |
| 239 | /*-------------------------------------------------------------*/ |
| 240 | /* Interrupt Enable */ |
| 241 | data = 1 << (ep->epnum + 8); |
| 242 | _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, data); |
| 243 | |
| 244 | /*-------------------------------------------------------------*/ |
| 245 | /* Endpoint Type(Mode) */ |
| 246 | /* Bulk, Interrupt, ISO */ |
| 247 | switch (ep->ep_type) { |
| 248 | case USB_ENDPOINT_XFER_BULK: |
| 249 | data = EPn_BULK; |
| 250 | break; |
| 251 | |
| 252 | case USB_ENDPOINT_XFER_INT: |
| 253 | data = EPn_BUF_SINGLE | EPn_INTERRUPT; |
| 254 | break; |
| 255 | |
| 256 | case USB_ENDPOINT_XFER_ISOC: |
| 257 | data = EPn_ISO; |
| 258 | break; |
| 259 | |
| 260 | default: |
| 261 | data = 0; |
| 262 | break; |
| 263 | } |
| 264 | |
| 265 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 266 | _nbu2ss_endpoint_toggle_reset(udc, (ep->epnum|ep->direct)); |
| 267 | |
| 268 | if (ep->direct == USB_DIR_OUT) { |
| 269 | /*---------------------------------------------------------*/ |
| 270 | /* OUT */ |
| 271 | data = EPn_EN | EPn_BCLR | EPn_DIR0; |
| 272 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 273 | |
| 274 | data = (EPn_ONAK | EPn_OSTL_EN | EPn_OSTL); |
| 275 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 276 | |
| 277 | data = (EPn_OUT_EN | EPn_OUT_END_EN); |
| 278 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); |
| 279 | } else { |
| 280 | /*---------------------------------------------------------*/ |
| 281 | /* IN */ |
| 282 | data = (EPn_EN | EPn_BCLR | EPn_AUTO); |
| 283 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 284 | |
| 285 | data = (EPn_ISTL); |
| 286 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 287 | |
| 288 | data = (EPn_IN_EN | EPn_IN_END_EN); |
| 289 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); |
| 290 | } |
| 291 | |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | /*-------------------------------------------------------------------------*/ |
| 296 | /* Release of Endpoint */ |
| 297 | static int _nbu2ss_epn_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 298 | { |
| 299 | u32 num; |
| 300 | u32 data; |
| 301 | |
| 302 | if ((ep->epnum == 0) || (udc->vbus_active == 0)) |
| 303 | return -EINVAL; |
| 304 | |
| 305 | num = ep->epnum - 1; |
| 306 | |
| 307 | /*-------------------------------------------------------------*/ |
| 308 | /* RAM Transfer Address */ |
| 309 | _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, 0); |
| 310 | |
| 311 | /*-------------------------------------------------------------*/ |
| 312 | /* Interrupt Disable */ |
| 313 | data = 1 << (ep->epnum + 8); |
| 314 | _nbu2ss_bitclr(&udc->p_regs->USB_INT_ENA, data); |
| 315 | |
| 316 | if (ep->direct == USB_DIR_OUT) { |
| 317 | /*---------------------------------------------------------*/ |
| 318 | /* OUT */ |
| 319 | data = EPn_ONAK | EPn_BCLR; |
| 320 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 321 | |
| 322 | data = EPn_EN | EPn_DIR0; |
| 323 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 324 | |
| 325 | data = EPn_OUT_EN | EPn_OUT_END_EN; |
| 326 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); |
| 327 | } else { |
| 328 | /*---------------------------------------------------------*/ |
| 329 | /* IN */ |
| 330 | data = EPn_BCLR; |
| 331 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 332 | |
| 333 | data = EPn_EN | EPn_AUTO; |
| 334 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 335 | |
| 336 | data = EPn_IN_EN | EPn_IN_END_EN; |
| 337 | _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); |
| 338 | } |
| 339 | |
| 340 | return 0; |
| 341 | } |
| 342 | |
| 343 | /*-------------------------------------------------------------------------*/ |
| 344 | /* DMA setting (without Endpoint 0) */ |
| 345 | static void _nbu2ss_ep_dma_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 346 | { |
| 347 | u32 num; |
| 348 | u32 data; |
| 349 | |
| 350 | data = _nbu2ss_readl(&udc->p_regs->USBSSCONF); |
| 351 | if (((ep->epnum == 0) || (data & (1 << ep->epnum)) == 0)) |
| 352 | return; /* Not Support DMA */ |
| 353 | |
| 354 | num = ep->epnum - 1; |
| 355 | |
| 356 | if (ep->direct == USB_DIR_OUT) { |
| 357 | /*---------------------------------------------------------*/ |
| 358 | /* OUT */ |
| 359 | data = ep->ep.maxpacket; |
| 360 | _nbu2ss_writel(&udc->p_regs->EP_DCR[num].EP_DCR2, data); |
| 361 | |
| 362 | /*---------------------------------------------------------*/ |
| 363 | /* Transfer Direct */ |
| 364 | data = DCR1_EPn_DIR0; |
| 365 | _nbu2ss_bitset(&udc->p_regs->EP_DCR[num].EP_DCR1, data); |
| 366 | |
| 367 | /*---------------------------------------------------------*/ |
| 368 | /* DMA Mode etc. */ |
| 369 | data = EPn_STOP_MODE | EPn_STOP_SET | EPn_DMAMODE0; |
| 370 | _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); |
| 371 | } else { |
| 372 | /*---------------------------------------------------------*/ |
| 373 | /* IN */ |
| 374 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, EPn_AUTO); |
| 375 | |
| 376 | /*---------------------------------------------------------*/ |
| 377 | /* DMA Mode etc. */ |
| 378 | data = EPn_BURST_SET | EPn_DMAMODE0; |
| 379 | _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | /*-------------------------------------------------------------------------*/ |
| 384 | /* DMA setting release */ |
| 385 | static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 386 | { |
| 387 | u32 num; |
| 388 | u32 data; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 389 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 390 | |
| 391 | if (udc->vbus_active == 0) |
| 392 | return; /* VBUS OFF */ |
| 393 | |
| 394 | data = _nbu2ss_readl(&preg->USBSSCONF); |
| 395 | if ((ep->epnum == 0) || ((data & (1 << ep->epnum)) == 0)) |
| 396 | return; /* Not Support DMA */ |
| 397 | |
| 398 | num = ep->epnum - 1; |
| 399 | |
| 400 | _nbu2ss_ep_dma_abort(udc, ep); |
| 401 | |
| 402 | if (ep->direct == USB_DIR_OUT) { |
| 403 | /*---------------------------------------------------------*/ |
| 404 | /* OUT */ |
| 405 | _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, 0); |
| 406 | _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_DIR0); |
| 407 | _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); |
| 408 | } else { |
| 409 | /*---------------------------------------------------------*/ |
| 410 | /* IN */ |
| 411 | _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); |
| 412 | _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | /*-------------------------------------------------------------------------*/ |
| 417 | /* Abort DMA */ |
| 418 | static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 419 | { |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 420 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 421 | |
| 422 | _nbu2ss_bitclr(&preg->EP_DCR[ep->epnum-1].EP_DCR1, DCR1_EPn_REQEN); |
| 423 | mdelay(DMA_DISABLE_TIME); /* DCR1_EPn_REQEN Clear */ |
| 424 | _nbu2ss_bitclr(&preg->EP_REGS[ep->epnum-1].EP_DMA_CTRL, EPn_DMA_EN); |
| 425 | } |
| 426 | |
| 427 | /*-------------------------------------------------------------------------*/ |
| 428 | /* Start IN Transfer */ |
| 429 | static void _nbu2ss_ep_in_end( |
| 430 | struct nbu2ss_udc *udc, |
| 431 | u32 epnum, |
| 432 | u32 data32, |
| 433 | u32 length |
| 434 | ) |
| 435 | { |
| 436 | u32 data; |
| 437 | u32 num; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 438 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 439 | |
| 440 | if (length >= sizeof(u32)) |
| 441 | return; |
| 442 | |
| 443 | if (epnum == 0) { |
| 444 | _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_AUTO); |
| 445 | |
| 446 | /* Writing of 1-4 bytes */ |
| 447 | if (length) |
| 448 | _nbu2ss_writel(&preg->EP0_WRITE, data32); |
| 449 | |
| 450 | data = ((length << 5) & EP0_DW) | EP0_DEND; |
| 451 | _nbu2ss_writel(&preg->EP0_CONTROL, data); |
| 452 | |
| 453 | _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_AUTO); |
| 454 | } else { |
| 455 | num = epnum - 1; |
| 456 | |
| 457 | _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); |
| 458 | |
| 459 | /* Writing of 1-4 bytes */ |
| 460 | if (length) |
| 461 | _nbu2ss_writel(&preg->EP_REGS[num].EP_WRITE, data32); |
| 462 | |
| 463 | data = (((((u32)length) << 5) & EPn_DW) | EPn_DEND); |
| 464 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); |
| 465 | |
| 466 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); |
| 467 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 468 | } |
| 469 | |
| 470 | #ifdef USE_DMA |
| 471 | /*-------------------------------------------------------------------------*/ |
| 472 | static void _nbu2ss_dma_map_single( |
| 473 | struct nbu2ss_udc *udc, |
| 474 | struct nbu2ss_ep *ep, |
| 475 | struct nbu2ss_req *req, |
| 476 | u8 direct |
| 477 | ) |
| 478 | { |
| 479 | if (req->req.dma == DMA_ADDR_INVALID) { |
| 480 | if (req->unaligned) |
| 481 | req->req.dma = ep->phys_buf; |
| 482 | else { |
| 483 | req->req.dma = dma_map_single( |
| 484 | udc->gadget.dev.parent, |
| 485 | req->req.buf, |
| 486 | req->req.length, |
| 487 | (direct == USB_DIR_IN) |
| 488 | ? DMA_TO_DEVICE : DMA_FROM_DEVICE); |
| 489 | } |
| 490 | req->mapped = 1; |
| 491 | } else { |
| 492 | if (!req->unaligned) |
| 493 | dma_sync_single_for_device( |
| 494 | udc->gadget.dev.parent, |
| 495 | req->req.dma, |
| 496 | req->req.length, |
| 497 | (direct == USB_DIR_IN) |
| 498 | ? DMA_TO_DEVICE : DMA_FROM_DEVICE); |
| 499 | |
| 500 | req->mapped = 0; |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | /*-------------------------------------------------------------------------*/ |
| 505 | static void _nbu2ss_dma_unmap_single( |
| 506 | struct nbu2ss_udc *udc, |
| 507 | struct nbu2ss_ep *ep, |
| 508 | struct nbu2ss_req *req, |
| 509 | u8 direct |
| 510 | ) |
| 511 | { |
| 512 | u8 data[4]; |
| 513 | u8 *p; |
| 514 | u32 count = 0; |
| 515 | |
| 516 | if (direct == USB_DIR_OUT) { |
| 517 | count = req->req.actual % 4; |
| 518 | if (count) { |
| 519 | p = req->req.buf; |
| 520 | p += (req->req.actual - count); |
| 521 | memcpy(data, p, count); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | if (req->mapped) { |
| 526 | if (req->unaligned) { |
| 527 | if (direct == USB_DIR_OUT) |
| 528 | memcpy(req->req.buf, ep->virt_buf, |
| 529 | req->req.actual & 0xfffffffc); |
| 530 | } else |
| 531 | dma_unmap_single(udc->gadget.dev.parent, |
| 532 | req->req.dma, req->req.length, |
| 533 | (direct == USB_DIR_IN) |
| 534 | ? DMA_TO_DEVICE |
| 535 | : DMA_FROM_DEVICE); |
| 536 | req->req.dma = DMA_ADDR_INVALID; |
| 537 | req->mapped = 0; |
| 538 | } else { |
| 539 | if (!req->unaligned) |
| 540 | dma_sync_single_for_cpu(udc->gadget.dev.parent, |
| 541 | req->req.dma, req->req.length, |
| 542 | (direct == USB_DIR_IN) |
| 543 | ? DMA_TO_DEVICE |
| 544 | : DMA_FROM_DEVICE); |
| 545 | } |
| 546 | |
| 547 | if (count) { |
| 548 | p = req->req.buf; |
| 549 | p += (req->req.actual - count); |
| 550 | memcpy(p, data, count); |
| 551 | } |
| 552 | } |
| 553 | #endif |
| 554 | |
| 555 | /*-------------------------------------------------------------------------*/ |
| 556 | /* Endpoint 0 OUT Transfer (PIO) */ |
KANG Yuxuan | a2c14e9 | 2014-07-16 10:45:01 +0800 | [diff] [blame] | 557 | static int EP0_out_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 558 | { |
| 559 | u32 i; |
| 560 | int nret = 0; |
| 561 | u32 iWordLength = 0; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 562 | union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 563 | |
| 564 | /*------------------------------------------------------------*/ |
| 565 | /* Read Length */ |
| 566 | iWordLength = length / sizeof(u32); |
| 567 | |
| 568 | /*------------------------------------------------------------*/ |
| 569 | /* PIO Read */ |
| 570 | if (iWordLength) { |
| 571 | for (i = 0; i < iWordLength; i++) { |
| 572 | pBuf32->dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); |
| 573 | pBuf32++; |
| 574 | } |
| 575 | nret = iWordLength * sizeof(u32); |
| 576 | } |
| 577 | |
| 578 | return nret; |
| 579 | } |
| 580 | |
| 581 | /*-------------------------------------------------------------------------*/ |
| 582 | /* Endpoint 0 OUT Transfer (PIO, OverBytes) */ |
KANG Yuxuan | a2c14e9 | 2014-07-16 10:45:01 +0800 | [diff] [blame] | 583 | static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 length) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 584 | { |
| 585 | u32 i; |
| 586 | u32 iReadSize = 0; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 587 | union usb_reg_access Temp32; |
| 588 | union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 589 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 590 | if ((length > 0) && (length < sizeof(u32))) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 591 | Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); |
| 592 | for (i = 0 ; i < length ; i++) |
| 593 | pBuf32->byte.DATA[i] = Temp32.byte.DATA[i]; |
| 594 | iReadSize += length; |
| 595 | } |
| 596 | |
| 597 | return iReadSize; |
| 598 | } |
| 599 | |
| 600 | /*-------------------------------------------------------------------------*/ |
| 601 | /* Endpoint 0 IN Transfer (PIO) */ |
| 602 | static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length) |
| 603 | { |
| 604 | u32 i; |
| 605 | u32 iMaxLength = EP0_PACKETSIZE; |
| 606 | u32 iWordLength = 0; |
| 607 | u32 iWriteLength = 0; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 608 | union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 609 | |
| 610 | /*------------------------------------------------------------*/ |
| 611 | /* Transfer Length */ |
| 612 | if (iMaxLength < length) |
| 613 | iWordLength = iMaxLength / sizeof(u32); |
| 614 | else |
| 615 | iWordLength = length / sizeof(u32); |
| 616 | |
| 617 | /*------------------------------------------------------------*/ |
| 618 | /* PIO */ |
| 619 | for (i = 0; i < iWordLength; i++) { |
| 620 | _nbu2ss_writel(&udc->p_regs->EP0_WRITE, pBuf32->dw); |
| 621 | pBuf32++; |
| 622 | iWriteLength += sizeof(u32); |
| 623 | } |
| 624 | |
| 625 | return iWriteLength; |
| 626 | } |
| 627 | |
| 628 | /*-------------------------------------------------------------------------*/ |
| 629 | /* Endpoint 0 IN Transfer (PIO, OverBytes) */ |
| 630 | static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize) |
| 631 | { |
| 632 | u32 i; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 633 | union usb_reg_access Temp32; |
| 634 | union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 635 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 636 | if ((iRemainSize > 0) && (iRemainSize < sizeof(u32))) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 637 | for (i = 0 ; i < iRemainSize ; i++) |
| 638 | Temp32.byte.DATA[i] = pBuf32->byte.DATA[i]; |
| 639 | _nbu2ss_ep_in_end(udc, 0, Temp32.dw, iRemainSize); |
| 640 | |
| 641 | return iRemainSize; |
| 642 | } |
| 643 | |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | /*-------------------------------------------------------------------------*/ |
| 648 | /* Transfer NULL Packet (Epndoint 0) */ |
| 649 | static int EP0_send_NULL(struct nbu2ss_udc *udc, bool pid_flag) |
| 650 | { |
| 651 | u32 data; |
| 652 | |
| 653 | data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); |
| 654 | data &= ~(u32)EP0_INAK; |
| 655 | |
| 656 | if (pid_flag) |
| 657 | data |= (EP0_INAK_EN | EP0_PIDCLR | EP0_DEND); |
| 658 | else |
| 659 | data |= (EP0_INAK_EN | EP0_DEND); |
| 660 | |
| 661 | _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); |
| 662 | |
| 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | /*-------------------------------------------------------------------------*/ |
| 667 | /* Receive NULL Packet (Endpoint 0) */ |
| 668 | static int EP0_receive_NULL(struct nbu2ss_udc *udc, bool pid_flag) |
| 669 | { |
| 670 | u32 data; |
| 671 | |
| 672 | data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); |
| 673 | data &= ~(u32)EP0_ONAK; |
| 674 | |
| 675 | if (pid_flag) |
| 676 | data |= EP0_PIDCLR; |
| 677 | |
| 678 | _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); |
| 679 | |
| 680 | return 0; |
| 681 | } |
| 682 | |
| 683 | /*-------------------------------------------------------------------------*/ |
| 684 | static int _nbu2ss_ep0_in_transfer( |
| 685 | struct nbu2ss_udc *udc, |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 686 | struct nbu2ss_req *req |
| 687 | ) |
| 688 | { |
| 689 | u8 *pBuffer; /* IN Data Buffer */ |
| 690 | u32 data; |
| 691 | u32 iRemainSize = 0; |
| 692 | int result = 0; |
| 693 | |
| 694 | /*-------------------------------------------------------------*/ |
| 695 | /* End confirmation */ |
| 696 | if (req->req.actual == req->req.length) { |
| 697 | if ((req->req.actual % EP0_PACKETSIZE) == 0) { |
| 698 | if (req->zero) { |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 699 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 700 | EP0_send_NULL(udc, FALSE); |
| 701 | return 1; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | return 0; /* Transfer End */ |
| 706 | } |
| 707 | |
| 708 | /*-------------------------------------------------------------*/ |
| 709 | /* NAK release */ |
| 710 | data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); |
| 711 | data |= EP0_INAK_EN; |
| 712 | data &= ~(u32)EP0_INAK; |
| 713 | _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); |
| 714 | |
| 715 | iRemainSize = req->req.length - req->req.actual; |
| 716 | pBuffer = (u8 *)req->req.buf; |
| 717 | pBuffer += req->req.actual; |
| 718 | |
| 719 | /*-------------------------------------------------------------*/ |
| 720 | /* Data transfer */ |
| 721 | result = EP0_in_PIO(udc, pBuffer, iRemainSize); |
| 722 | |
| 723 | req->div_len = result; |
| 724 | iRemainSize -= result; |
| 725 | |
| 726 | if (iRemainSize == 0) { |
| 727 | EP0_send_NULL(udc, FALSE); |
| 728 | return result; |
| 729 | } |
| 730 | |
| 731 | if ((iRemainSize < sizeof(u32)) && (result != EP0_PACKETSIZE)) { |
| 732 | pBuffer += result; |
| 733 | result += EP0_in_OverBytes(udc, pBuffer, iRemainSize); |
| 734 | req->div_len = result; |
| 735 | } |
| 736 | |
| 737 | return result; |
| 738 | } |
| 739 | |
| 740 | /*-------------------------------------------------------------------------*/ |
| 741 | static int _nbu2ss_ep0_out_transfer( |
| 742 | struct nbu2ss_udc *udc, |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 743 | struct nbu2ss_req *req |
| 744 | ) |
| 745 | { |
| 746 | u8 *pBuffer; |
| 747 | u32 iRemainSize; |
| 748 | u32 iRecvLength; |
| 749 | int result = 0; |
| 750 | int fRcvZero; |
| 751 | |
| 752 | /*-------------------------------------------------------------*/ |
| 753 | /* Receive data confirmation */ |
| 754 | iRecvLength = _nbu2ss_readl(&udc->p_regs->EP0_LENGTH) & EP0_LDATA; |
| 755 | if (iRecvLength != 0) { |
| 756 | |
| 757 | fRcvZero = 0; |
| 758 | |
| 759 | iRemainSize = req->req.length - req->req.actual; |
| 760 | pBuffer = (u8 *)req->req.buf; |
| 761 | pBuffer += req->req.actual; |
| 762 | |
| 763 | result = EP0_out_PIO(udc, pBuffer |
| 764 | , min(iRemainSize, iRecvLength)); |
| 765 | if (result < 0) |
| 766 | return result; |
| 767 | |
| 768 | req->req.actual += result; |
| 769 | iRecvLength -= result; |
| 770 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 771 | if ((iRecvLength > 0) && (iRecvLength < sizeof(u32))) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 772 | pBuffer += result; |
| 773 | iRemainSize -= result; |
| 774 | |
| 775 | result = EP0_out_OverBytes(udc, pBuffer |
| 776 | , min(iRemainSize, iRecvLength)); |
| 777 | req->req.actual += result; |
| 778 | } |
| 779 | } else { |
| 780 | fRcvZero = 1; |
| 781 | } |
| 782 | |
| 783 | /*-------------------------------------------------------------*/ |
| 784 | /* End confirmation */ |
| 785 | if (req->req.actual == req->req.length) { |
| 786 | if ((req->req.actual % EP0_PACKETSIZE) == 0) { |
| 787 | if (req->zero) { |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 788 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 789 | EP0_receive_NULL(udc, FALSE); |
| 790 | return 1; |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | return 0; /* Transfer End */ |
| 795 | } |
| 796 | |
| 797 | if ((req->req.actual % EP0_PACKETSIZE) != 0) |
| 798 | return 0; /* Short Packet Transfer End */ |
| 799 | |
| 800 | if (req->req.actual > req->req.length) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 801 | dev_err(udc->dev, " *** Overrun Error\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 802 | return -EOVERFLOW; |
| 803 | } |
| 804 | |
| 805 | if (fRcvZero != 0) { |
| 806 | iRemainSize = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); |
| 807 | if (iRemainSize & EP0_ONAK) { |
| 808 | /*---------------------------------------------------*/ |
| 809 | /* NACK release */ |
| 810 | _nbu2ss_bitclr(&udc->p_regs->EP0_CONTROL, EP0_ONAK); |
| 811 | } |
| 812 | result = 1; |
| 813 | } |
| 814 | |
| 815 | return result; |
| 816 | } |
| 817 | |
| 818 | /*-------------------------------------------------------------------------*/ |
| 819 | static int _nbu2ss_out_dma( |
| 820 | struct nbu2ss_udc *udc, |
| 821 | struct nbu2ss_req *req, |
| 822 | u32 num, |
| 823 | u32 length |
| 824 | ) |
| 825 | { |
| 826 | u8 *pBuffer; |
| 827 | u32 mpkt; |
| 828 | u32 lmpkt; |
| 829 | u32 dmacnt; |
| 830 | u32 burst = 1; |
| 831 | u32 data; |
| 832 | int result = -EINVAL; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 833 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 834 | |
| 835 | if (req->dma_flag) |
| 836 | return 1; /* DMA is forwarded */ |
| 837 | |
| 838 | req->dma_flag = TRUE; |
| 839 | pBuffer = (u8 *)req->req.dma; |
| 840 | pBuffer += req->req.actual; |
| 841 | |
| 842 | /* DMA Address */ |
| 843 | _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer); |
| 844 | |
| 845 | /* Number of transfer packets */ |
| 846 | mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT; |
| 847 | dmacnt = (length / mpkt); |
| 848 | lmpkt = (length % mpkt) & ~(u32)0x03; |
| 849 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 850 | if (dmacnt > DMA_MAX_COUNT) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 851 | dmacnt = DMA_MAX_COUNT; |
| 852 | lmpkt = 0; |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 853 | } else if (lmpkt != 0) { |
| 854 | if (dmacnt == 0) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 855 | burst = 0; /* Burst OFF */ |
| 856 | dmacnt++; |
| 857 | } |
| 858 | |
| 859 | data = mpkt | (lmpkt << 16); |
| 860 | _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); |
| 861 | |
| 862 | data = ((dmacnt & 0xff) << 16) | DCR1_EPn_DIR0 | DCR1_EPn_REQEN; |
| 863 | _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); |
| 864 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 865 | if (burst == 0) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 866 | _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, 0); |
| 867 | _nbu2ss_bitclr(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET); |
| 868 | } else { |
| 869 | _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT |
| 870 | , (dmacnt << 16)); |
| 871 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET); |
| 872 | } |
| 873 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN); |
| 874 | |
| 875 | result = length & ~(u32)0x03; |
| 876 | req->div_len = result; |
| 877 | |
| 878 | return result; |
| 879 | } |
| 880 | |
| 881 | /*-------------------------------------------------------------------------*/ |
| 882 | static int _nbu2ss_epn_out_pio( |
| 883 | struct nbu2ss_udc *udc, |
| 884 | struct nbu2ss_ep *ep, |
| 885 | struct nbu2ss_req *req, |
| 886 | u32 length |
| 887 | ) |
| 888 | { |
| 889 | u8 *pBuffer; |
| 890 | u32 i; |
| 891 | u32 data; |
| 892 | u32 iWordLength; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 893 | union usb_reg_access Temp32; |
| 894 | union usb_reg_access *pBuf32; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 895 | int result = 0; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 896 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 897 | |
| 898 | if (req->dma_flag) |
| 899 | return 1; /* DMA is forwarded */ |
| 900 | |
| 901 | if (length == 0) |
| 902 | return 0; |
| 903 | |
| 904 | pBuffer = (u8 *)req->req.buf; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 905 | pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 906 | |
| 907 | iWordLength = length / sizeof(u32); |
| 908 | if (iWordLength > 0) { |
| 909 | /*---------------------------------------------------------*/ |
| 910 | /* Copy of every four bytes */ |
| 911 | for (i = 0; i < iWordLength; i++) { |
| 912 | pBuf32->dw = |
| 913 | _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ); |
| 914 | pBuf32++; |
| 915 | } |
| 916 | result = iWordLength * sizeof(u32); |
| 917 | } |
| 918 | |
| 919 | data = length - result; |
| 920 | if (data > 0) { |
| 921 | /*---------------------------------------------------------*/ |
| 922 | /* Copy of fraction byte */ |
| 923 | Temp32.dw = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ); |
| 924 | for (i = 0 ; i < data ; i++) |
| 925 | pBuf32->byte.DATA[i] = Temp32.byte.DATA[i]; |
| 926 | result += data; |
| 927 | } |
| 928 | |
| 929 | req->req.actual += result; |
| 930 | |
| 931 | if ((req->req.actual == req->req.length) |
| 932 | || ((req->req.actual % ep->ep.maxpacket) != 0)) { |
| 933 | |
| 934 | result = 0; |
| 935 | } |
| 936 | |
| 937 | return result; |
| 938 | } |
| 939 | |
| 940 | /*-------------------------------------------------------------------------*/ |
| 941 | static int _nbu2ss_epn_out_data( |
| 942 | struct nbu2ss_udc *udc, |
| 943 | struct nbu2ss_ep *ep, |
| 944 | struct nbu2ss_req *req, |
| 945 | u32 data_size |
| 946 | ) |
| 947 | { |
| 948 | u32 num; |
| 949 | u32 iBufSize; |
| 950 | int nret = 1; |
| 951 | |
| 952 | if (ep->epnum == 0) |
| 953 | return -EINVAL; |
| 954 | |
| 955 | num = ep->epnum - 1; |
| 956 | |
| 957 | iBufSize = min((req->req.length - req->req.actual), data_size); |
| 958 | |
| 959 | if ((ep->ep_type != USB_ENDPOINT_XFER_INT) |
| 960 | && (req->req.dma != 0) |
| 961 | && (iBufSize >= sizeof(u32))) { |
| 962 | nret = _nbu2ss_out_dma(udc, req, num, iBufSize); |
| 963 | } else { |
Ebru Akagunduz | 77d966f | 2014-10-02 23:32:07 +0300 | [diff] [blame] | 964 | iBufSize = min_t(u32, iBufSize, ep->ep.maxpacket); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 965 | nret = _nbu2ss_epn_out_pio(udc, ep, req, iBufSize); |
| 966 | } |
| 967 | |
| 968 | return nret; |
| 969 | } |
| 970 | |
| 971 | /*-------------------------------------------------------------------------*/ |
| 972 | static int _nbu2ss_epn_out_transfer( |
| 973 | struct nbu2ss_udc *udc, |
| 974 | struct nbu2ss_ep *ep, |
| 975 | struct nbu2ss_req *req |
| 976 | ) |
| 977 | { |
| 978 | u32 num; |
| 979 | u32 iRecvLength; |
| 980 | int result = 1; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 981 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 982 | |
| 983 | if (ep->epnum == 0) |
| 984 | return -EINVAL; |
| 985 | |
| 986 | num = ep->epnum - 1; |
| 987 | |
| 988 | /*-------------------------------------------------------------*/ |
| 989 | /* Receive Length */ |
| 990 | iRecvLength |
| 991 | = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) & EPn_LDATA; |
| 992 | |
| 993 | if (iRecvLength != 0) { |
| 994 | result = _nbu2ss_epn_out_data(udc, ep, req, iRecvLength); |
| 995 | if (iRecvLength < ep->ep.maxpacket) { |
| 996 | if (iRecvLength == result) { |
| 997 | req->req.actual += result; |
| 998 | result = 0; |
| 999 | } |
| 1000 | } |
| 1001 | } else { |
| 1002 | if ((req->req.actual == req->req.length) |
| 1003 | || ((req->req.actual % ep->ep.maxpacket) != 0)) { |
| 1004 | |
| 1005 | result = 0; |
| 1006 | } |
| 1007 | } |
| 1008 | |
| 1009 | if (result == 0) { |
| 1010 | if ((req->req.actual % ep->ep.maxpacket) == 0) { |
| 1011 | if (req->zero) { |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 1012 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1013 | return 1; |
| 1014 | } |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | if (req->req.actual > req->req.length) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 1019 | dev_err(udc->dev, " Overrun Error\n"); |
| 1020 | dev_err(udc->dev, " actual = %d, length = %d\n", |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1021 | req->req.actual, req->req.length); |
| 1022 | result = -EOVERFLOW; |
| 1023 | } |
| 1024 | |
| 1025 | return result; |
| 1026 | } |
| 1027 | |
| 1028 | /*-------------------------------------------------------------------------*/ |
| 1029 | static int _nbu2ss_in_dma( |
| 1030 | struct nbu2ss_udc *udc, |
| 1031 | struct nbu2ss_ep *ep, |
| 1032 | struct nbu2ss_req *req, |
| 1033 | u32 num, |
| 1034 | u32 length |
| 1035 | ) |
| 1036 | { |
| 1037 | u8 *pBuffer; |
| 1038 | u32 mpkt; /* MaxPacketSize */ |
| 1039 | u32 lmpkt; /* Last Packet Data Size */ |
| 1040 | u32 dmacnt; /* IN Data Size */ |
| 1041 | u32 iWriteLength; |
| 1042 | u32 data; |
| 1043 | int result = -EINVAL; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1044 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1045 | |
| 1046 | if (req->dma_flag) |
| 1047 | return 1; /* DMA is forwarded */ |
| 1048 | |
| 1049 | #ifdef USE_DMA |
| 1050 | if (req->req.actual == 0) |
| 1051 | _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_IN); |
| 1052 | #endif |
| 1053 | req->dma_flag = TRUE; |
| 1054 | |
| 1055 | /* MAX Packet Size */ |
| 1056 | mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT; |
| 1057 | |
| 1058 | if ((DMA_MAX_COUNT * mpkt) < length) |
| 1059 | iWriteLength = DMA_MAX_COUNT * mpkt; |
| 1060 | else |
| 1061 | iWriteLength = length; |
| 1062 | |
| 1063 | /*------------------------------------------------------------*/ |
| 1064 | /* Number of transmission packets */ |
| 1065 | if (mpkt < iWriteLength) { |
| 1066 | dmacnt = iWriteLength / mpkt; |
| 1067 | lmpkt = (iWriteLength % mpkt) & ~(u32)0x3; |
| 1068 | if (lmpkt != 0) |
| 1069 | dmacnt++; |
| 1070 | else |
| 1071 | lmpkt = mpkt & ~(u32)0x3; |
| 1072 | |
| 1073 | } else { |
| 1074 | dmacnt = 1; |
| 1075 | lmpkt = iWriteLength & ~(u32)0x3; |
| 1076 | } |
| 1077 | |
| 1078 | /* Packet setting */ |
| 1079 | data = mpkt | (lmpkt << 16); |
| 1080 | _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); |
| 1081 | |
| 1082 | /* Address setting */ |
| 1083 | pBuffer = (u8 *)req->req.dma; |
| 1084 | pBuffer += req->req.actual; |
| 1085 | _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer); |
| 1086 | |
| 1087 | /* Packet and DMA setting */ |
| 1088 | data = ((dmacnt & 0xff) << 16) | DCR1_EPn_REQEN; |
| 1089 | _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); |
| 1090 | |
| 1091 | /* Packet setting of EPC */ |
| 1092 | data = dmacnt << 16; |
| 1093 | _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, data); |
| 1094 | |
| 1095 | /*DMA setting of EPC */ |
| 1096 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN); |
| 1097 | |
| 1098 | result = iWriteLength & ~(u32)0x3; |
| 1099 | req->div_len = result; |
| 1100 | |
| 1101 | return result; |
| 1102 | } |
| 1103 | |
| 1104 | /*-------------------------------------------------------------------------*/ |
| 1105 | static int _nbu2ss_epn_in_pio( |
| 1106 | struct nbu2ss_udc *udc, |
| 1107 | struct nbu2ss_ep *ep, |
| 1108 | struct nbu2ss_req *req, |
| 1109 | u32 length |
| 1110 | ) |
| 1111 | { |
| 1112 | u8 *pBuffer; |
| 1113 | u32 i; |
| 1114 | u32 data; |
| 1115 | u32 iWordLength; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1116 | union usb_reg_access Temp32; |
| 1117 | union usb_reg_access *pBuf32 = NULL; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1118 | int result = 0; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1119 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1120 | |
| 1121 | if (req->dma_flag) |
| 1122 | return 1; /* DMA is forwarded */ |
| 1123 | |
| 1124 | if (length > 0) { |
| 1125 | pBuffer = (u8 *)req->req.buf; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1126 | pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1127 | |
| 1128 | iWordLength = length / sizeof(u32); |
| 1129 | if (iWordLength > 0) { |
| 1130 | for (i = 0; i < iWordLength; i++) { |
| 1131 | _nbu2ss_writel( |
| 1132 | &preg->EP_REGS[ep->epnum-1].EP_WRITE |
| 1133 | , pBuf32->dw |
| 1134 | ); |
| 1135 | |
| 1136 | pBuf32++; |
| 1137 | } |
| 1138 | result = iWordLength * sizeof(u32); |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | if (result != ep->ep.maxpacket) { |
| 1143 | data = length - result; |
| 1144 | Temp32.dw = 0; |
| 1145 | for (i = 0 ; i < data ; i++) |
| 1146 | Temp32.byte.DATA[i] = pBuf32->byte.DATA[i]; |
| 1147 | |
| 1148 | _nbu2ss_ep_in_end(udc, ep->epnum, Temp32.dw, data); |
| 1149 | result += data; |
| 1150 | } |
| 1151 | |
| 1152 | req->div_len = result; |
| 1153 | |
| 1154 | return result; |
| 1155 | } |
| 1156 | |
| 1157 | /*-------------------------------------------------------------------------*/ |
| 1158 | static int _nbu2ss_epn_in_data( |
| 1159 | struct nbu2ss_udc *udc, |
| 1160 | struct nbu2ss_ep *ep, |
| 1161 | struct nbu2ss_req *req, |
| 1162 | u32 data_size |
| 1163 | ) |
| 1164 | { |
| 1165 | u32 num; |
| 1166 | int nret = 1; |
| 1167 | |
| 1168 | if (ep->epnum == 0) |
| 1169 | return -EINVAL; |
| 1170 | |
| 1171 | num = ep->epnum - 1; |
| 1172 | |
| 1173 | if ((ep->ep_type != USB_ENDPOINT_XFER_INT) |
| 1174 | && (req->req.dma != 0) |
| 1175 | && (data_size >= sizeof(u32))) { |
| 1176 | nret = _nbu2ss_in_dma(udc, ep, req, num, data_size); |
| 1177 | } else { |
Ebru Akagunduz | 77d966f | 2014-10-02 23:32:07 +0300 | [diff] [blame] | 1178 | data_size = min_t(u32, data_size, ep->ep.maxpacket); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1179 | nret = _nbu2ss_epn_in_pio(udc, ep, req, data_size); |
| 1180 | } |
| 1181 | |
| 1182 | return nret; |
| 1183 | } |
| 1184 | |
| 1185 | /*-------------------------------------------------------------------------*/ |
| 1186 | static int _nbu2ss_epn_in_transfer( |
| 1187 | struct nbu2ss_udc *udc, |
| 1188 | struct nbu2ss_ep *ep, |
| 1189 | struct nbu2ss_req *req |
| 1190 | ) |
| 1191 | { |
| 1192 | u32 num; |
| 1193 | u32 iBufSize; |
| 1194 | int result = 0; |
| 1195 | u32 status; |
| 1196 | |
| 1197 | if (ep->epnum == 0) |
| 1198 | return -EINVAL; |
| 1199 | |
| 1200 | num = ep->epnum - 1; |
| 1201 | |
| 1202 | status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); |
| 1203 | |
| 1204 | /*-------------------------------------------------------------*/ |
| 1205 | /* State confirmation of FIFO */ |
| 1206 | if (req->req.actual == 0) { |
| 1207 | if ((status & EPn_IN_EMPTY) == 0) |
| 1208 | return 1; /* Not Empty */ |
| 1209 | |
| 1210 | } else { |
| 1211 | if ((status & EPn_IN_FULL) != 0) |
| 1212 | return 1; /* Not Empty */ |
| 1213 | } |
| 1214 | |
| 1215 | /*-------------------------------------------------------------*/ |
Carlos E. Garcia | 69e98df | 2015-04-24 09:40:42 -0400 | [diff] [blame] | 1216 | /* Start transfer */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1217 | iBufSize = req->req.length - req->req.actual; |
| 1218 | if (iBufSize > 0) |
| 1219 | result = _nbu2ss_epn_in_data(udc, ep, req, iBufSize); |
| 1220 | else if (req->req.length == 0) |
| 1221 | _nbu2ss_zero_len_pkt(udc, ep->epnum); |
| 1222 | |
| 1223 | return result; |
| 1224 | } |
| 1225 | |
| 1226 | /*-------------------------------------------------------------------------*/ |
| 1227 | static int _nbu2ss_start_transfer( |
| 1228 | struct nbu2ss_udc *udc, |
| 1229 | struct nbu2ss_ep *ep, |
| 1230 | struct nbu2ss_req *req, |
| 1231 | bool bflag) |
| 1232 | { |
| 1233 | int nret = -EINVAL; |
| 1234 | |
| 1235 | req->dma_flag = FALSE; |
| 1236 | req->div_len = 0; |
| 1237 | |
| 1238 | if (req->req.length == 0) |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 1239 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1240 | else { |
| 1241 | if ((req->req.length % ep->ep.maxpacket) == 0) |
| 1242 | req->zero = req->req.zero; |
| 1243 | else |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 1244 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | if (ep->epnum == 0) { |
| 1248 | /* EP0 */ |
| 1249 | switch (udc->ep0state) { |
| 1250 | case EP0_IN_DATA_PHASE: |
Ravi Teja Darbha | f2b2916 | 2015-09-08 21:18:51 +0530 | [diff] [blame] | 1251 | nret = _nbu2ss_ep0_in_transfer(udc, req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1252 | break; |
| 1253 | |
| 1254 | case EP0_OUT_DATA_PHASE: |
Ravi Teja Darbha | f2b2916 | 2015-09-08 21:18:51 +0530 | [diff] [blame] | 1255 | nret = _nbu2ss_ep0_out_transfer(udc, req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1256 | break; |
| 1257 | |
| 1258 | case EP0_IN_STATUS_PHASE: |
| 1259 | nret = EP0_send_NULL(udc, TRUE); |
| 1260 | break; |
| 1261 | |
| 1262 | default: |
| 1263 | break; |
| 1264 | } |
| 1265 | |
| 1266 | } else { |
| 1267 | /* EPn */ |
| 1268 | if (ep->direct == USB_DIR_OUT) { |
| 1269 | /* OUT */ |
| 1270 | if (bflag == FALSE) |
| 1271 | nret = _nbu2ss_epn_out_transfer(udc, ep, req); |
| 1272 | } else { |
| 1273 | /* IN */ |
| 1274 | nret = _nbu2ss_epn_in_transfer(udc, ep, req); |
| 1275 | } |
| 1276 | } |
| 1277 | |
| 1278 | return nret; |
| 1279 | } |
| 1280 | |
| 1281 | /*-------------------------------------------------------------------------*/ |
| 1282 | static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep) |
| 1283 | { |
| 1284 | u32 length; |
| 1285 | bool bflag = FALSE; |
| 1286 | struct nbu2ss_req *req; |
| 1287 | |
| 1288 | if (list_empty(&ep->queue)) |
| 1289 | req = NULL; |
| 1290 | else |
| 1291 | req = list_entry(ep->queue.next, struct nbu2ss_req, queue); |
| 1292 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 1293 | if (!req) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1294 | return; |
| 1295 | |
| 1296 | if (ep->epnum > 0) { |
| 1297 | length = _nbu2ss_readl( |
| 1298 | &ep->udc->p_regs->EP_REGS[ep->epnum-1].EP_LEN_DCNT); |
| 1299 | |
| 1300 | length &= EPn_LDATA; |
| 1301 | if (length < ep->ep.maxpacket) |
| 1302 | bflag = TRUE; |
| 1303 | } |
| 1304 | |
| 1305 | _nbu2ss_start_transfer(ep->udc, ep, req, bflag); |
| 1306 | } |
| 1307 | |
| 1308 | /*-------------------------------------------------------------------------*/ |
| 1309 | /* Endpoint Toggle Reset */ |
| 1310 | static void _nbu2ss_endpoint_toggle_reset( |
| 1311 | struct nbu2ss_udc *udc, |
| 1312 | u8 ep_adrs) |
| 1313 | { |
| 1314 | u8 num; |
| 1315 | u32 data; |
| 1316 | |
| 1317 | if ((ep_adrs == 0) || (ep_adrs == 0x80)) |
| 1318 | return; |
| 1319 | |
| 1320 | num = (ep_adrs & 0x7F) - 1; |
| 1321 | |
| 1322 | if (ep_adrs & USB_DIR_IN) |
| 1323 | data = EPn_IPIDCLR; |
| 1324 | else |
| 1325 | data = EPn_BCLR | EPn_OPIDCLR; |
| 1326 | |
| 1327 | _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); |
| 1328 | } |
| 1329 | |
| 1330 | /*-------------------------------------------------------------------------*/ |
| 1331 | /* Endpoint STALL set */ |
| 1332 | static void _nbu2ss_set_endpoint_stall( |
| 1333 | struct nbu2ss_udc *udc, |
| 1334 | u8 ep_adrs, |
| 1335 | bool bstall) |
| 1336 | { |
| 1337 | u8 num, epnum; |
| 1338 | u32 data; |
| 1339 | struct nbu2ss_ep *ep; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1340 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1341 | |
| 1342 | if ((ep_adrs == 0) || (ep_adrs == 0x80)) { |
| 1343 | if (bstall) { |
| 1344 | /* Set STALL */ |
| 1345 | _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_STL); |
| 1346 | } else { |
| 1347 | /* Clear STALL */ |
| 1348 | _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_STL); |
| 1349 | } |
| 1350 | } else { |
| 1351 | epnum = ep_adrs & USB_ENDPOINT_NUMBER_MASK; |
| 1352 | num = epnum - 1; |
| 1353 | ep = &udc->ep[epnum]; |
| 1354 | |
| 1355 | if (bstall) { |
| 1356 | /* Set STALL */ |
| 1357 | ep->halted = TRUE; |
| 1358 | |
| 1359 | if (ep_adrs & USB_DIR_IN) |
| 1360 | data = EPn_BCLR | EPn_ISTL; |
| 1361 | else |
| 1362 | data = EPn_OSTL_EN | EPn_OSTL; |
| 1363 | |
| 1364 | _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); |
| 1365 | } else { |
| 1366 | /* Clear STALL */ |
| 1367 | ep->stalled = FALSE; |
| 1368 | if (ep_adrs & USB_DIR_IN) { |
| 1369 | _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL |
| 1370 | , EPn_ISTL); |
| 1371 | } else { |
| 1372 | data = |
| 1373 | _nbu2ss_readl(&preg->EP_REGS[num].EP_CONTROL); |
| 1374 | |
| 1375 | data &= ~EPn_OSTL; |
| 1376 | data |= EPn_OSTL_EN; |
| 1377 | |
| 1378 | _nbu2ss_writel(&preg->EP_REGS[num].EP_CONTROL |
| 1379 | , data); |
| 1380 | } |
| 1381 | |
| 1382 | ep->stalled = FALSE; |
| 1383 | if (ep->halted) { |
| 1384 | ep->halted = FALSE; |
| 1385 | _nbu2ss_restert_transfer(ep); |
| 1386 | } |
| 1387 | } |
| 1388 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1389 | } |
| 1390 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1391 | /*-------------------------------------------------------------------------*/ |
| 1392 | /* Device Descriptor */ |
| 1393 | static struct usb_device_descriptor device_desc = { |
| 1394 | .bLength = sizeof(device_desc), |
| 1395 | .bDescriptorType = USB_DT_DEVICE, |
Roberta Dobrescu | 1ff99b3 | 2014-09-19 23:34:36 +0300 | [diff] [blame] | 1396 | .bcdUSB = cpu_to_le16(0x0200), |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1397 | .bDeviceClass = USB_CLASS_VENDOR_SPEC, |
| 1398 | .bDeviceSubClass = 0x00, |
| 1399 | .bDeviceProtocol = 0x00, |
| 1400 | .bMaxPacketSize0 = 64, |
Roberta Dobrescu | 1ff99b3 | 2014-09-19 23:34:36 +0300 | [diff] [blame] | 1401 | .idVendor = cpu_to_le16(0x0409), |
| 1402 | .idProduct = cpu_to_le16(0xfff0), |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1403 | .bcdDevice = 0xffff, |
| 1404 | .iManufacturer = 0x00, |
| 1405 | .iProduct = 0x00, |
| 1406 | .iSerialNumber = 0x00, |
| 1407 | .bNumConfigurations = 0x01, |
| 1408 | }; |
| 1409 | |
| 1410 | /*-------------------------------------------------------------------------*/ |
| 1411 | static void _nbu2ss_set_test_mode(struct nbu2ss_udc *udc, u32 mode) |
| 1412 | { |
| 1413 | u32 data; |
| 1414 | |
| 1415 | if (mode > MAX_TEST_MODE_NUM) |
| 1416 | return; |
| 1417 | |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 1418 | dev_info(udc->dev, "SET FEATURE : test mode = %d\n", mode); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1419 | |
| 1420 | data = _nbu2ss_readl(&udc->p_regs->USB_CONTROL); |
| 1421 | data &= ~TEST_FORCE_ENABLE; |
| 1422 | data |= mode << TEST_MODE_SHIFT; |
| 1423 | |
| 1424 | _nbu2ss_writel(&udc->p_regs->USB_CONTROL, data); |
| 1425 | _nbu2ss_bitset(&udc->p_regs->TEST_CONTROL, CS_TESTMODEEN); |
| 1426 | } |
| 1427 | |
| 1428 | /*-------------------------------------------------------------------------*/ |
| 1429 | static int _nbu2ss_set_feature_device( |
| 1430 | struct nbu2ss_udc *udc, |
| 1431 | u16 selector, |
| 1432 | u16 wIndex |
| 1433 | ) |
| 1434 | { |
| 1435 | int result = -EOPNOTSUPP; |
| 1436 | |
| 1437 | switch (selector) { |
| 1438 | case USB_DEVICE_REMOTE_WAKEUP: |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1439 | if (wIndex == 0x0000) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1440 | udc->remote_wakeup = U2F_ENABLE; |
| 1441 | result = 0; |
| 1442 | } |
| 1443 | break; |
| 1444 | |
| 1445 | case USB_DEVICE_TEST_MODE: |
Aya Mahfouz | 410c944 | 2015-02-26 11:45:51 +0200 | [diff] [blame] | 1446 | wIndex >>= 8; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1447 | if (wIndex <= MAX_TEST_MODE_NUM) |
| 1448 | result = 0; |
| 1449 | break; |
| 1450 | |
| 1451 | default: |
| 1452 | break; |
| 1453 | } |
| 1454 | |
| 1455 | return result; |
| 1456 | } |
| 1457 | |
| 1458 | /*-------------------------------------------------------------------------*/ |
| 1459 | static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs) |
| 1460 | { |
| 1461 | u8 epnum; |
| 1462 | u32 data = 0, bit_data; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1463 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1464 | |
| 1465 | epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK; |
| 1466 | if (epnum == 0) { |
| 1467 | data = _nbu2ss_readl(&preg->EP0_CONTROL); |
| 1468 | bit_data = EP0_STL; |
| 1469 | |
| 1470 | } else { |
| 1471 | data = _nbu2ss_readl(&preg->EP_REGS[epnum-1].EP_CONTROL); |
| 1472 | if ((data & EPn_EN) == 0) |
| 1473 | return -1; |
| 1474 | |
| 1475 | if (ep_adrs & USB_ENDPOINT_DIR_MASK) |
| 1476 | bit_data = EPn_ISTL; |
| 1477 | else |
| 1478 | bit_data = EPn_OSTL; |
| 1479 | } |
| 1480 | |
| 1481 | if ((data & bit_data) == 0) |
| 1482 | return 0; |
Gulsah Kose | 924c6ee | 2014-09-26 00:41:22 +0300 | [diff] [blame] | 1483 | return 1; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1484 | } |
| 1485 | |
| 1486 | /*-------------------------------------------------------------------------*/ |
| 1487 | static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset) |
| 1488 | { |
| 1489 | u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); |
| 1490 | u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); |
| 1491 | u16 selector = udc->ctrl.wValue; |
| 1492 | u16 wIndex = udc->ctrl.wIndex; |
| 1493 | u8 ep_adrs; |
| 1494 | int result = -EOPNOTSUPP; |
| 1495 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1496 | if ((udc->ctrl.wLength != 0x0000) || |
| 1497 | (direction != USB_DIR_OUT)) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1498 | return -EINVAL; |
| 1499 | } |
| 1500 | |
| 1501 | switch (recipient) { |
| 1502 | case USB_RECIP_DEVICE: |
| 1503 | if (bset) |
| 1504 | result = |
| 1505 | _nbu2ss_set_feature_device(udc, selector, wIndex); |
| 1506 | break; |
| 1507 | |
| 1508 | case USB_RECIP_ENDPOINT: |
| 1509 | if (0x0000 == (wIndex & 0xFF70)) { |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1510 | if (selector == USB_ENDPOINT_HALT) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1511 | ep_adrs = wIndex & 0xFF; |
| 1512 | if (bset == FALSE) { |
| 1513 | _nbu2ss_endpoint_toggle_reset( |
| 1514 | udc, ep_adrs); |
| 1515 | } |
| 1516 | |
| 1517 | _nbu2ss_set_endpoint_stall( |
| 1518 | udc, ep_adrs, bset); |
| 1519 | |
| 1520 | result = 0; |
| 1521 | } |
| 1522 | } |
| 1523 | break; |
| 1524 | |
| 1525 | default: |
| 1526 | break; |
| 1527 | } |
| 1528 | |
| 1529 | if (result >= 0) |
| 1530 | _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); |
| 1531 | |
| 1532 | return result; |
| 1533 | } |
| 1534 | |
| 1535 | /*-------------------------------------------------------------------------*/ |
| 1536 | static inline enum usb_device_speed _nbu2ss_get_speed(struct nbu2ss_udc *udc) |
| 1537 | { |
| 1538 | u32 data; |
| 1539 | enum usb_device_speed speed = USB_SPEED_FULL; |
| 1540 | |
| 1541 | data = _nbu2ss_readl(&udc->p_regs->USB_STATUS); |
| 1542 | if (data & HIGH_SPEED) |
| 1543 | speed = USB_SPEED_HIGH; |
| 1544 | |
| 1545 | return speed; |
| 1546 | } |
| 1547 | |
| 1548 | /*-------------------------------------------------------------------------*/ |
| 1549 | static void _nbu2ss_epn_set_stall( |
| 1550 | struct nbu2ss_udc *udc, |
| 1551 | struct nbu2ss_ep *ep |
| 1552 | ) |
| 1553 | { |
| 1554 | u8 ep_adrs; |
| 1555 | u32 regdata; |
| 1556 | int limit_cnt = 0; |
| 1557 | |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1558 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1559 | |
| 1560 | if (ep->direct == USB_DIR_IN) { |
| 1561 | for (limit_cnt = 0 |
| 1562 | ; limit_cnt < IN_DATA_EMPTY_COUNT |
| 1563 | ; limit_cnt++) { |
| 1564 | |
| 1565 | regdata = _nbu2ss_readl( |
| 1566 | &preg->EP_REGS[ep->epnum-1].EP_STATUS); |
| 1567 | |
| 1568 | if ((regdata & EPn_IN_DATA) == 0) |
| 1569 | break; |
| 1570 | |
| 1571 | mdelay(1); |
| 1572 | } |
| 1573 | } |
| 1574 | |
| 1575 | ep_adrs = ep->epnum | ep->direct; |
| 1576 | _nbu2ss_set_endpoint_stall(udc, ep_adrs, 1); |
| 1577 | } |
| 1578 | |
| 1579 | /*-------------------------------------------------------------------------*/ |
| 1580 | static int std_req_get_status(struct nbu2ss_udc *udc) |
| 1581 | { |
| 1582 | u32 length; |
| 1583 | u16 status_data = 0; |
| 1584 | u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); |
| 1585 | u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); |
| 1586 | u8 ep_adrs; |
| 1587 | int result = -EINVAL; |
| 1588 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1589 | if ((udc->ctrl.wValue != 0x0000) |
| 1590 | || (direction != USB_DIR_IN)) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1591 | |
| 1592 | return result; |
| 1593 | } |
| 1594 | |
Ebru Akagunduz | 77d966f | 2014-10-02 23:32:07 +0300 | [diff] [blame] | 1595 | length = min_t(u16, udc->ctrl.wLength, sizeof(status_data)); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1596 | |
| 1597 | switch (recipient) { |
| 1598 | case USB_RECIP_DEVICE: |
| 1599 | if (udc->ctrl.wIndex == 0x0000) { |
Peter Chen | 9239d88 | 2015-01-28 16:32:27 +0800 | [diff] [blame] | 1600 | if (udc->gadget.is_selfpowered) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1601 | status_data |= (1 << USB_DEVICE_SELF_POWERED); |
| 1602 | |
| 1603 | if (udc->remote_wakeup) |
| 1604 | status_data |= (1 << USB_DEVICE_REMOTE_WAKEUP); |
| 1605 | |
| 1606 | result = 0; |
| 1607 | } |
| 1608 | break; |
| 1609 | |
| 1610 | case USB_RECIP_ENDPOINT: |
| 1611 | if (0x0000 == (udc->ctrl.wIndex & 0xFF70)) { |
| 1612 | ep_adrs = (u8)(udc->ctrl.wIndex & 0xFF); |
| 1613 | result = _nbu2ss_get_ep_stall(udc, ep_adrs); |
| 1614 | |
| 1615 | if (result > 0) |
| 1616 | status_data |= (1 << USB_ENDPOINT_HALT); |
| 1617 | } |
| 1618 | break; |
| 1619 | |
| 1620 | default: |
| 1621 | break; |
| 1622 | } |
| 1623 | |
| 1624 | if (result >= 0) { |
| 1625 | memcpy(udc->ep0_buf, &status_data, length); |
| 1626 | _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, length); |
Ravi Teja Darbha | f2b2916 | 2015-09-08 21:18:51 +0530 | [diff] [blame] | 1627 | _nbu2ss_ep0_in_transfer(udc, &udc->ep0_req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1628 | |
| 1629 | } else { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 1630 | dev_err(udc->dev, " Error GET_STATUS\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1631 | } |
| 1632 | |
| 1633 | return result; |
| 1634 | } |
| 1635 | |
| 1636 | /*-------------------------------------------------------------------------*/ |
| 1637 | static int std_req_clear_feature(struct nbu2ss_udc *udc) |
| 1638 | { |
| 1639 | return _nbu2ss_req_feature(udc, FALSE); |
| 1640 | } |
| 1641 | |
| 1642 | /*-------------------------------------------------------------------------*/ |
| 1643 | static int std_req_set_feature(struct nbu2ss_udc *udc) |
| 1644 | { |
| 1645 | return _nbu2ss_req_feature(udc, TRUE); |
| 1646 | } |
| 1647 | |
| 1648 | /*-------------------------------------------------------------------------*/ |
| 1649 | static int std_req_set_address(struct nbu2ss_udc *udc) |
| 1650 | { |
| 1651 | int result = 0; |
| 1652 | u32 wValue = udc->ctrl.wValue; |
| 1653 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1654 | if ((udc->ctrl.bRequestType != 0x00) || |
| 1655 | (udc->ctrl.wIndex != 0x0000) || |
| 1656 | (udc->ctrl.wLength != 0x0000)) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1657 | return -EINVAL; |
| 1658 | } |
| 1659 | |
| 1660 | if (wValue != (wValue & 0x007F)) |
| 1661 | return -EINVAL; |
| 1662 | |
Aya Mahfouz | 410c944 | 2015-02-26 11:45:51 +0200 | [diff] [blame] | 1663 | wValue <<= USB_ADRS_SHIFT; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1664 | |
| 1665 | _nbu2ss_writel(&udc->p_regs->USB_ADDRESS, wValue); |
| 1666 | _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); |
| 1667 | |
| 1668 | return result; |
| 1669 | } |
| 1670 | |
| 1671 | /*-------------------------------------------------------------------------*/ |
| 1672 | static int std_req_set_configuration(struct nbu2ss_udc *udc) |
| 1673 | { |
| 1674 | u32 ConfigValue = (u32)(udc->ctrl.wValue & 0x00ff); |
| 1675 | |
Cristina Moraru | 2866914 | 2015-09-29 14:47:25 -0700 | [diff] [blame] | 1676 | if ((udc->ctrl.wIndex != 0x0000) || |
| 1677 | (udc->ctrl.wLength != 0x0000) || |
| 1678 | (udc->ctrl.bRequestType != 0x00)) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1679 | return -EINVAL; |
| 1680 | } |
| 1681 | |
| 1682 | udc->curr_config = ConfigValue; |
| 1683 | |
| 1684 | if (ConfigValue > 0) { |
| 1685 | _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, CONF); |
| 1686 | udc->devstate = USB_STATE_CONFIGURED; |
| 1687 | |
| 1688 | } else { |
| 1689 | _nbu2ss_bitclr(&udc->p_regs->USB_CONTROL, CONF); |
| 1690 | udc->devstate = USB_STATE_ADDRESS; |
| 1691 | } |
| 1692 | |
| 1693 | return 0; |
| 1694 | } |
| 1695 | |
| 1696 | /*-------------------------------------------------------------------------*/ |
| 1697 | static inline void _nbu2ss_read_request_data(struct nbu2ss_udc *udc, u32 *pdata) |
| 1698 | { |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 1699 | if ((!udc) && (!pdata)) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1700 | return; |
| 1701 | |
| 1702 | *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA0); |
| 1703 | pdata++; |
| 1704 | *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA1); |
| 1705 | } |
| 1706 | |
| 1707 | /*-------------------------------------------------------------------------*/ |
| 1708 | static inline int _nbu2ss_decode_request(struct nbu2ss_udc *udc) |
| 1709 | { |
| 1710 | bool bcall_back = TRUE; |
| 1711 | int nret = -EINVAL; |
| 1712 | struct usb_ctrlrequest *p_ctrl; |
| 1713 | |
| 1714 | p_ctrl = &udc->ctrl; |
| 1715 | _nbu2ss_read_request_data(udc, (u32 *)p_ctrl); |
| 1716 | |
| 1717 | /* ep0 state control */ |
| 1718 | if (p_ctrl->wLength == 0) { |
| 1719 | udc->ep0state = EP0_IN_STATUS_PHASE; |
| 1720 | |
| 1721 | } else { |
| 1722 | if (p_ctrl->bRequestType & USB_DIR_IN) |
| 1723 | udc->ep0state = EP0_IN_DATA_PHASE; |
| 1724 | else |
| 1725 | udc->ep0state = EP0_OUT_DATA_PHASE; |
| 1726 | } |
| 1727 | |
| 1728 | if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { |
| 1729 | switch (p_ctrl->bRequest) { |
| 1730 | case USB_REQ_GET_STATUS: |
| 1731 | nret = std_req_get_status(udc); |
| 1732 | bcall_back = FALSE; |
| 1733 | break; |
| 1734 | |
| 1735 | case USB_REQ_CLEAR_FEATURE: |
| 1736 | nret = std_req_clear_feature(udc); |
| 1737 | bcall_back = FALSE; |
| 1738 | break; |
| 1739 | |
| 1740 | case USB_REQ_SET_FEATURE: |
| 1741 | nret = std_req_set_feature(udc); |
| 1742 | bcall_back = FALSE; |
| 1743 | break; |
| 1744 | |
| 1745 | case USB_REQ_SET_ADDRESS: |
| 1746 | nret = std_req_set_address(udc); |
| 1747 | bcall_back = FALSE; |
| 1748 | break; |
| 1749 | |
| 1750 | case USB_REQ_SET_CONFIGURATION: |
| 1751 | nret = std_req_set_configuration(udc); |
| 1752 | break; |
| 1753 | |
| 1754 | default: |
| 1755 | break; |
| 1756 | } |
| 1757 | } |
| 1758 | |
| 1759 | if (bcall_back == FALSE) { |
| 1760 | if (udc->ep0state == EP0_IN_STATUS_PHASE) { |
| 1761 | if (nret >= 0) { |
| 1762 | /*--------------------------------------*/ |
| 1763 | /* Status Stage */ |
| 1764 | nret = EP0_send_NULL(udc, TRUE); |
| 1765 | } |
| 1766 | } |
| 1767 | |
| 1768 | } else { |
| 1769 | spin_unlock(&udc->lock); |
| 1770 | nret = udc->driver->setup(&udc->gadget, &udc->ctrl); |
| 1771 | spin_lock(&udc->lock); |
| 1772 | } |
| 1773 | |
| 1774 | if (nret < 0) |
| 1775 | udc->ep0state = EP0_IDLE; |
| 1776 | |
| 1777 | return nret; |
| 1778 | } |
| 1779 | |
| 1780 | /*-------------------------------------------------------------------------*/ |
| 1781 | static inline int _nbu2ss_ep0_in_data_stage(struct nbu2ss_udc *udc) |
| 1782 | { |
| 1783 | int nret; |
| 1784 | struct nbu2ss_req *req; |
| 1785 | struct nbu2ss_ep *ep = &udc->ep[0]; |
| 1786 | |
| 1787 | if (list_empty(&ep->queue)) |
| 1788 | req = NULL; |
| 1789 | else |
| 1790 | req = list_entry(ep->queue.next, struct nbu2ss_req, queue); |
| 1791 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 1792 | if (!req) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1793 | req = &udc->ep0_req; |
| 1794 | |
| 1795 | req->req.actual += req->div_len; |
| 1796 | req->div_len = 0; |
| 1797 | |
Ravi Teja Darbha | f2b2916 | 2015-09-08 21:18:51 +0530 | [diff] [blame] | 1798 | nret = _nbu2ss_ep0_in_transfer(udc, req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1799 | if (nret == 0) { |
| 1800 | udc->ep0state = EP0_OUT_STATUS_PAHSE; |
| 1801 | EP0_receive_NULL(udc, TRUE); |
| 1802 | } |
| 1803 | |
| 1804 | return 0; |
| 1805 | } |
| 1806 | |
| 1807 | /*-------------------------------------------------------------------------*/ |
| 1808 | static inline int _nbu2ss_ep0_out_data_stage(struct nbu2ss_udc *udc) |
| 1809 | { |
| 1810 | int nret; |
| 1811 | struct nbu2ss_req *req; |
| 1812 | struct nbu2ss_ep *ep = &udc->ep[0]; |
| 1813 | |
| 1814 | if (list_empty(&ep->queue)) |
| 1815 | req = NULL; |
| 1816 | else |
| 1817 | req = list_entry(ep->queue.next, struct nbu2ss_req, queue); |
| 1818 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 1819 | if (!req) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1820 | req = &udc->ep0_req; |
| 1821 | |
Ravi Teja Darbha | f2b2916 | 2015-09-08 21:18:51 +0530 | [diff] [blame] | 1822 | nret = _nbu2ss_ep0_out_transfer(udc, req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1823 | if (nret == 0) { |
| 1824 | udc->ep0state = EP0_IN_STATUS_PHASE; |
| 1825 | EP0_send_NULL(udc, TRUE); |
| 1826 | |
| 1827 | } else if (nret < 0) { |
| 1828 | _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, EP0_BCLR); |
| 1829 | req->req.status = nret; |
| 1830 | } |
| 1831 | |
| 1832 | return 0; |
| 1833 | } |
| 1834 | |
| 1835 | /*-------------------------------------------------------------------------*/ |
| 1836 | static inline int _nbu2ss_ep0_status_stage(struct nbu2ss_udc *udc) |
| 1837 | { |
| 1838 | struct nbu2ss_req *req; |
| 1839 | struct nbu2ss_ep *ep = &udc->ep[0]; |
| 1840 | |
| 1841 | if (list_empty(&ep->queue)) |
| 1842 | req = NULL; |
| 1843 | else |
| 1844 | req = list_entry(ep->queue.next, struct nbu2ss_req, queue); |
| 1845 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 1846 | if (!req) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1847 | req = &udc->ep0_req; |
| 1848 | if (req->req.complete) |
| 1849 | req->req.complete(&ep->ep, &req->req); |
| 1850 | |
| 1851 | } else { |
| 1852 | if (req->req.complete) |
| 1853 | _nbu2ss_ep_done(ep, req, 0); |
| 1854 | } |
| 1855 | |
| 1856 | udc->ep0state = EP0_IDLE; |
| 1857 | |
| 1858 | return 0; |
| 1859 | } |
| 1860 | |
| 1861 | /*-------------------------------------------------------------------------*/ |
| 1862 | static inline void _nbu2ss_ep0_int(struct nbu2ss_udc *udc) |
| 1863 | { |
| 1864 | int i; |
| 1865 | u32 status; |
| 1866 | u32 intr; |
| 1867 | int nret = -1; |
| 1868 | |
| 1869 | status = _nbu2ss_readl(&udc->p_regs->EP0_STATUS); |
| 1870 | intr = status & EP0_STATUS_RW_BIT; |
| 1871 | _nbu2ss_writel(&udc->p_regs->EP0_STATUS, ~(u32)intr); |
| 1872 | |
| 1873 | status &= (SETUP_INT | EP0_IN_INT | EP0_OUT_INT |
| 1874 | | STG_END_INT | EP0_OUT_NULL_INT); |
| 1875 | |
| 1876 | if (status == 0) { |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 1877 | dev_info(udc->dev, "%s Not Decode Interrupt\n", __func__); |
| 1878 | dev_info(udc->dev, "EP0_STATUS = 0x%08x\n", intr); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1879 | return; |
| 1880 | } |
| 1881 | |
| 1882 | if (udc->gadget.speed == USB_SPEED_UNKNOWN) |
| 1883 | udc->gadget.speed = _nbu2ss_get_speed(udc); |
| 1884 | |
| 1885 | for (i = 0; i < EP0_END_XFER; i++) { |
| 1886 | switch (udc->ep0state) { |
| 1887 | case EP0_IDLE: |
| 1888 | if (status & SETUP_INT) { |
| 1889 | status = 0; |
| 1890 | nret = _nbu2ss_decode_request(udc); |
| 1891 | } |
| 1892 | break; |
| 1893 | |
| 1894 | case EP0_IN_DATA_PHASE: |
| 1895 | if (status & EP0_IN_INT) { |
| 1896 | status &= ~EP0_IN_INT; |
| 1897 | nret = _nbu2ss_ep0_in_data_stage(udc); |
| 1898 | } |
| 1899 | break; |
| 1900 | |
| 1901 | case EP0_OUT_DATA_PHASE: |
| 1902 | if (status & EP0_OUT_INT) { |
| 1903 | status &= ~EP0_OUT_INT; |
| 1904 | nret = _nbu2ss_ep0_out_data_stage(udc); |
| 1905 | } |
| 1906 | break; |
| 1907 | |
| 1908 | case EP0_IN_STATUS_PHASE: |
| 1909 | if ((status & STG_END_INT) || (status & SETUP_INT)) { |
| 1910 | status &= ~(STG_END_INT | EP0_IN_INT); |
| 1911 | nret = _nbu2ss_ep0_status_stage(udc); |
| 1912 | } |
| 1913 | break; |
| 1914 | |
| 1915 | case EP0_OUT_STATUS_PAHSE: |
| 1916 | if ((status & STG_END_INT) |
| 1917 | || (status & SETUP_INT) |
| 1918 | || (status & EP0_OUT_NULL_INT)) { |
| 1919 | status &= ~(STG_END_INT |
| 1920 | | EP0_OUT_INT |
| 1921 | | EP0_OUT_NULL_INT); |
| 1922 | |
| 1923 | nret = _nbu2ss_ep0_status_stage(udc); |
| 1924 | } |
| 1925 | |
| 1926 | break; |
| 1927 | |
| 1928 | default: |
| 1929 | status = 0; |
| 1930 | break; |
| 1931 | } |
| 1932 | |
| 1933 | if (status == 0) |
| 1934 | break; |
| 1935 | } |
| 1936 | |
| 1937 | if (nret < 0) { |
| 1938 | /* Send Stall */ |
| 1939 | _nbu2ss_set_endpoint_stall(udc, 0, TRUE); |
| 1940 | } |
| 1941 | } |
| 1942 | |
| 1943 | /*-------------------------------------------------------------------------*/ |
| 1944 | static void _nbu2ss_ep_done( |
| 1945 | struct nbu2ss_ep *ep, |
| 1946 | struct nbu2ss_req *req, |
| 1947 | int status) |
| 1948 | { |
| 1949 | struct nbu2ss_udc *udc = ep->udc; |
| 1950 | |
| 1951 | list_del_init(&req->queue); |
| 1952 | |
| 1953 | if (status == -ECONNRESET) |
| 1954 | _nbu2ss_fifo_flush(udc, ep); |
| 1955 | |
| 1956 | if (likely(req->req.status == -EINPROGRESS)) |
| 1957 | req->req.status = status; |
| 1958 | |
| 1959 | if (ep->stalled) |
| 1960 | _nbu2ss_epn_set_stall(udc, ep); |
| 1961 | else { |
| 1962 | if (!list_empty(&ep->queue)) |
| 1963 | _nbu2ss_restert_transfer(ep); |
| 1964 | } |
| 1965 | |
| 1966 | #ifdef USE_DMA |
| 1967 | if ((ep->direct == USB_DIR_OUT) && (ep->epnum > 0) && |
| 1968 | (req->req.dma != 0)) |
| 1969 | _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_OUT); |
| 1970 | #endif |
| 1971 | |
| 1972 | spin_unlock(&udc->lock); |
| 1973 | req->req.complete(&ep->ep, &req->req); |
| 1974 | spin_lock(&udc->lock); |
| 1975 | } |
| 1976 | |
| 1977 | /*-------------------------------------------------------------------------*/ |
| 1978 | static inline void _nbu2ss_epn_in_int( |
| 1979 | struct nbu2ss_udc *udc, |
| 1980 | struct nbu2ss_ep *ep, |
| 1981 | struct nbu2ss_req *req) |
| 1982 | { |
| 1983 | int result = 0; |
| 1984 | u32 status; |
| 1985 | |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 1986 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 1987 | |
| 1988 | if (req->dma_flag) |
| 1989 | return; /* DMA is forwarded */ |
| 1990 | |
| 1991 | req->req.actual += req->div_len; |
| 1992 | req->div_len = 0; |
| 1993 | |
| 1994 | if (req->req.actual != req->req.length) { |
| 1995 | /*---------------------------------------------------------*/ |
| 1996 | /* remainder of data */ |
| 1997 | result = _nbu2ss_epn_in_transfer(udc, ep, req); |
| 1998 | |
| 1999 | } else { |
Roberta Dobrescu | 5cbca95 | 2014-09-23 11:36:37 +0300 | [diff] [blame] | 2000 | if (req->zero && ((req->req.actual % ep->ep.maxpacket) == 0)) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2001 | |
| 2002 | status = |
| 2003 | _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_STATUS); |
| 2004 | |
| 2005 | if ((status & EPn_IN_FULL) == 0) { |
| 2006 | /*-----------------------------------------*/ |
| 2007 | /* 0 Length Packet */ |
Roberta Dobrescu | 666e908 | 2014-09-23 11:37:02 +0300 | [diff] [blame] | 2008 | req->zero = false; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2009 | _nbu2ss_zero_len_pkt(udc, ep->epnum); |
| 2010 | } |
| 2011 | return; |
| 2012 | } |
| 2013 | } |
| 2014 | |
| 2015 | if (result <= 0) { |
| 2016 | /*---------------------------------------------------------*/ |
| 2017 | /* Complete */ |
| 2018 | _nbu2ss_ep_done(ep, req, result); |
| 2019 | } |
| 2020 | } |
| 2021 | |
| 2022 | /*-------------------------------------------------------------------------*/ |
| 2023 | static inline void _nbu2ss_epn_out_int( |
| 2024 | struct nbu2ss_udc *udc, |
| 2025 | struct nbu2ss_ep *ep, |
| 2026 | struct nbu2ss_req *req) |
| 2027 | { |
| 2028 | int result; |
| 2029 | |
| 2030 | result = _nbu2ss_epn_out_transfer(udc, ep, req); |
| 2031 | if (result <= 0) |
| 2032 | _nbu2ss_ep_done(ep, req, result); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2033 | } |
| 2034 | |
| 2035 | /*-------------------------------------------------------------------------*/ |
| 2036 | static inline void _nbu2ss_epn_in_dma_int( |
| 2037 | struct nbu2ss_udc *udc, |
| 2038 | struct nbu2ss_ep *ep, |
| 2039 | struct nbu2ss_req *req) |
| 2040 | { |
| 2041 | u32 mpkt; |
| 2042 | u32 size; |
| 2043 | struct usb_request *preq; |
| 2044 | |
| 2045 | preq = &req->req; |
| 2046 | |
| 2047 | if (req->dma_flag == FALSE) |
| 2048 | return; |
| 2049 | |
| 2050 | preq->actual += req->div_len; |
| 2051 | req->div_len = 0; |
| 2052 | req->dma_flag = FALSE; |
| 2053 | |
| 2054 | #ifdef USE_DMA |
| 2055 | _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_IN); |
| 2056 | #endif |
| 2057 | |
| 2058 | if (preq->actual != preq->length) { |
| 2059 | _nbu2ss_epn_in_transfer(udc, ep, req); |
| 2060 | } else { |
| 2061 | mpkt = ep->ep.maxpacket; |
| 2062 | size = preq->actual % mpkt; |
| 2063 | if (size > 0) { |
| 2064 | if (((preq->actual & 0x03) == 0) && (size < mpkt)) |
| 2065 | _nbu2ss_ep_in_end(udc, ep->epnum, 0, 0); |
| 2066 | } else { |
| 2067 | _nbu2ss_epn_in_int(udc, ep, req); |
| 2068 | } |
| 2069 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2070 | } |
| 2071 | |
| 2072 | /*-------------------------------------------------------------------------*/ |
| 2073 | static inline void _nbu2ss_epn_out_dma_int( |
| 2074 | struct nbu2ss_udc *udc, |
| 2075 | struct nbu2ss_ep *ep, |
| 2076 | struct nbu2ss_req *req) |
| 2077 | { |
| 2078 | int i; |
| 2079 | u32 num; |
| 2080 | u32 dmacnt, ep_dmacnt; |
| 2081 | u32 mpkt; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 2082 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2083 | |
| 2084 | num = ep->epnum - 1; |
| 2085 | |
| 2086 | if (req->req.actual == req->req.length) { |
Roberta Dobrescu | 5cbca95 | 2014-09-23 11:36:37 +0300 | [diff] [blame] | 2087 | if ((req->req.length % ep->ep.maxpacket) && !req->zero) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2088 | req->div_len = 0; |
| 2089 | req->dma_flag = FALSE; |
| 2090 | _nbu2ss_ep_done(ep, req, 0); |
| 2091 | return; |
| 2092 | } |
| 2093 | } |
| 2094 | |
| 2095 | ep_dmacnt = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) |
| 2096 | & EPn_DMACNT; |
| 2097 | ep_dmacnt >>= 16; |
| 2098 | |
| 2099 | for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { |
| 2100 | dmacnt = _nbu2ss_readl(&preg->EP_DCR[num].EP_DCR1) |
| 2101 | & DCR1_EPn_DMACNT; |
| 2102 | dmacnt >>= 16; |
| 2103 | if (ep_dmacnt == dmacnt) |
| 2104 | break; |
| 2105 | } |
| 2106 | |
| 2107 | _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_REQEN); |
| 2108 | |
| 2109 | if (dmacnt != 0) { |
| 2110 | mpkt = ep->ep.maxpacket; |
| 2111 | if ((req->div_len % mpkt) == 0) |
| 2112 | req->div_len -= mpkt * dmacnt; |
| 2113 | } |
| 2114 | |
| 2115 | if ((req->req.actual % ep->ep.maxpacket) > 0) { |
| 2116 | if (req->req.actual == req->div_len) { |
| 2117 | req->div_len = 0; |
| 2118 | req->dma_flag = FALSE; |
| 2119 | _nbu2ss_ep_done(ep, req, 0); |
| 2120 | return; |
| 2121 | } |
| 2122 | } |
| 2123 | |
| 2124 | req->req.actual += req->div_len; |
| 2125 | req->div_len = 0; |
| 2126 | req->dma_flag = FALSE; |
| 2127 | |
| 2128 | _nbu2ss_epn_out_int(udc, ep, req); |
| 2129 | } |
| 2130 | |
| 2131 | /*-------------------------------------------------------------------------*/ |
| 2132 | static inline void _nbu2ss_epn_int(struct nbu2ss_udc *udc, u32 epnum) |
| 2133 | { |
| 2134 | u32 num; |
| 2135 | u32 status; |
| 2136 | |
| 2137 | struct nbu2ss_req *req; |
| 2138 | struct nbu2ss_ep *ep = &udc->ep[epnum]; |
| 2139 | |
| 2140 | num = epnum - 1; |
| 2141 | |
| 2142 | /* Interrupt Status */ |
| 2143 | status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); |
| 2144 | |
| 2145 | /* Interrupt Clear */ |
| 2146 | _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_STATUS, ~(u32)status); |
| 2147 | |
| 2148 | if (list_empty(&ep->queue)) |
| 2149 | req = NULL; |
| 2150 | else |
| 2151 | req = list_entry(ep->queue.next, struct nbu2ss_req, queue); |
| 2152 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2153 | if (!req) { |
Masanari Iida | f02935c | 2014-09-13 01:14:30 +0900 | [diff] [blame] | 2154 | /* pr_warn("=== %s(%d) req == NULL\n", __func__, epnum); */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2155 | return; |
| 2156 | } |
| 2157 | |
| 2158 | if (status & EPn_OUT_END_INT) { |
| 2159 | status &= ~EPn_OUT_INT; |
| 2160 | _nbu2ss_epn_out_dma_int(udc, ep, req); |
| 2161 | } |
| 2162 | |
| 2163 | if (status & EPn_OUT_INT) |
| 2164 | _nbu2ss_epn_out_int(udc, ep, req); |
| 2165 | |
| 2166 | if (status & EPn_IN_END_INT) { |
| 2167 | status &= ~EPn_IN_INT; |
| 2168 | _nbu2ss_epn_in_dma_int(udc, ep, req); |
| 2169 | } |
| 2170 | |
| 2171 | if (status & EPn_IN_INT) |
| 2172 | _nbu2ss_epn_in_int(udc, ep, req); |
| 2173 | } |
| 2174 | |
| 2175 | /*-------------------------------------------------------------------------*/ |
| 2176 | static inline void _nbu2ss_ep_int(struct nbu2ss_udc *udc, u32 epnum) |
| 2177 | { |
| 2178 | if (epnum == 0) |
| 2179 | _nbu2ss_ep0_int(udc); |
| 2180 | else |
| 2181 | _nbu2ss_epn_int(udc, epnum); |
| 2182 | } |
| 2183 | |
| 2184 | /*-------------------------------------------------------------------------*/ |
| 2185 | static void _nbu2ss_ep0_enable(struct nbu2ss_udc *udc) |
| 2186 | { |
| 2187 | _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, (EP0_AUTO | EP0_BCLR)); |
| 2188 | _nbu2ss_writel(&udc->p_regs->EP0_INT_ENA, EP0_INT_EN_BIT); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2189 | } |
| 2190 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2191 | /*-------------------------------------------------------------------------*/ |
| 2192 | static int _nbu2ss_nuke(struct nbu2ss_udc *udc, |
| 2193 | struct nbu2ss_ep *ep, |
| 2194 | int status) |
| 2195 | { |
| 2196 | struct nbu2ss_req *req; |
| 2197 | |
| 2198 | /* Endpoint Disable */ |
| 2199 | _nbu2ss_epn_exit(udc, ep); |
| 2200 | |
| 2201 | /* DMA Disable */ |
| 2202 | _nbu2ss_ep_dma_exit(udc, ep); |
| 2203 | |
| 2204 | if (list_empty(&ep->queue)) |
| 2205 | return 0; |
| 2206 | |
| 2207 | /* called with irqs blocked */ |
Somya Anand | ca3d253 | 2015-03-14 01:03:08 +0530 | [diff] [blame] | 2208 | list_for_each_entry(req, &ep->queue, queue) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2209 | _nbu2ss_ep_done(ep, req, status); |
| 2210 | } |
| 2211 | |
| 2212 | return 0; |
| 2213 | } |
| 2214 | |
| 2215 | /*-------------------------------------------------------------------------*/ |
| 2216 | static void _nbu2ss_quiesce(struct nbu2ss_udc *udc) |
| 2217 | { |
| 2218 | struct nbu2ss_ep *ep; |
| 2219 | |
| 2220 | udc->gadget.speed = USB_SPEED_UNKNOWN; |
| 2221 | |
| 2222 | _nbu2ss_nuke(udc, &udc->ep[0], -ESHUTDOWN); |
| 2223 | |
| 2224 | /* Endpoint n */ |
| 2225 | list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { |
| 2226 | _nbu2ss_nuke(udc, ep, -ESHUTDOWN); |
| 2227 | } |
| 2228 | } |
| 2229 | |
| 2230 | /*-------------------------------------------------------------------------*/ |
| 2231 | static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on) |
| 2232 | { |
| 2233 | u32 reg_dt; |
| 2234 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2235 | if (udc->vbus_active == 0) |
| 2236 | return -ESHUTDOWN; |
| 2237 | |
| 2238 | if (is_on) { |
| 2239 | /* D+ Pullup */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2240 | if (udc->driver) { |
| 2241 | reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) |
| 2242 | | PUE2) & ~(u32)CONNECTB; |
| 2243 | |
| 2244 | _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); |
| 2245 | } |
| 2246 | |
| 2247 | } else { |
| 2248 | /* D+ Pulldown */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2249 | reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) | CONNECTB) |
| 2250 | & ~(u32)PUE2; |
| 2251 | |
| 2252 | _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); |
| 2253 | udc->gadget.speed = USB_SPEED_UNKNOWN; |
| 2254 | } |
| 2255 | |
| 2256 | return 0; |
| 2257 | } |
| 2258 | |
| 2259 | /*-------------------------------------------------------------------------*/ |
| 2260 | static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) |
| 2261 | { |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 2262 | struct fc_regs *p = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2263 | |
| 2264 | if (udc->vbus_active == 0) |
| 2265 | return; |
| 2266 | |
| 2267 | if (ep->epnum == 0) { |
| 2268 | /* EP0 */ |
| 2269 | _nbu2ss_bitset(&p->EP0_CONTROL, EP0_BCLR); |
| 2270 | |
| 2271 | } else { |
| 2272 | /* EPn */ |
| 2273 | _nbu2ss_ep_dma_abort(udc, ep); |
| 2274 | _nbu2ss_bitset(&p->EP_REGS[ep->epnum - 1].EP_CONTROL, EPn_BCLR); |
| 2275 | } |
| 2276 | } |
| 2277 | |
| 2278 | /*-------------------------------------------------------------------------*/ |
| 2279 | static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc) |
| 2280 | { |
| 2281 | int waitcnt = 0; |
| 2282 | |
| 2283 | if (udc->udc_enabled) |
| 2284 | return 0; |
| 2285 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2286 | /* |
| 2287 | Reset |
| 2288 | */ |
| 2289 | _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); |
| 2290 | udelay(EPC_RST_DISABLE_TIME); /* 1us wait */ |
| 2291 | |
| 2292 | _nbu2ss_bitclr(&udc->p_regs->EPCTR, DIRPD); |
| 2293 | mdelay(EPC_DIRPD_DISABLE_TIME); /* 1ms wait */ |
| 2294 | |
| 2295 | _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); |
| 2296 | |
| 2297 | _nbu2ss_writel(&udc->p_regs->AHBSCTR, WAIT_MODE); |
| 2298 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2299 | _nbu2ss_writel(&udc->p_regs->AHBMCTR, |
| 2300 | HBUSREQ_MODE | HTRANS_MODE | WBURST_TYPE); |
| 2301 | |
| 2302 | while (!(_nbu2ss_readl(&udc->p_regs->EPCTR) & PLL_LOCK)) { |
| 2303 | waitcnt++; |
| 2304 | udelay(1); /* 1us wait */ |
| 2305 | if (waitcnt == EPC_PLL_LOCK_COUNT) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2306 | dev_err(udc->dev, "*** Reset Cancel failed\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2307 | return -EINVAL; |
| 2308 | } |
Gujulan Elango, Hari Prasath (H.) | 3e2bb64 | 2015-04-23 19:29:51 +0000 | [diff] [blame] | 2309 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2310 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2311 | _nbu2ss_bitset(&udc->p_regs->UTMI_CHARACTER_1, USB_SQUSET); |
| 2312 | |
| 2313 | _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, (INT_SEL | SOF_RCV)); |
| 2314 | |
| 2315 | /* EP0 */ |
| 2316 | _nbu2ss_ep0_enable(udc); |
| 2317 | |
| 2318 | /* USB Interrupt Enable */ |
| 2319 | _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, USB_INT_EN_BIT); |
| 2320 | |
| 2321 | udc->udc_enabled = TRUE; |
| 2322 | |
| 2323 | return 0; |
| 2324 | } |
| 2325 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2326 | /*-------------------------------------------------------------------------*/ |
| 2327 | static void _nbu2ss_reset_controller(struct nbu2ss_udc *udc) |
| 2328 | { |
| 2329 | _nbu2ss_bitset(&udc->p_regs->EPCTR, EPC_RST); |
| 2330 | _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); |
| 2331 | } |
| 2332 | |
| 2333 | /*-------------------------------------------------------------------------*/ |
| 2334 | static void _nbu2ss_disable_controller(struct nbu2ss_udc *udc) |
| 2335 | { |
| 2336 | if (udc->udc_enabled) { |
| 2337 | udc->udc_enabled = FALSE; |
| 2338 | _nbu2ss_reset_controller(udc); |
| 2339 | _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); |
| 2340 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2341 | } |
| 2342 | |
| 2343 | /*-------------------------------------------------------------------------*/ |
| 2344 | static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc) |
| 2345 | { |
| 2346 | int nret; |
| 2347 | u32 reg_dt; |
| 2348 | |
| 2349 | /* chattering */ |
| 2350 | mdelay(VBUS_CHATTERING_MDELAY); /* wait (ms) */ |
| 2351 | |
| 2352 | /* VBUS ON Check*/ |
| 2353 | reg_dt = gpio_get_value(VBUS_VALUE); |
| 2354 | if (reg_dt == 0) { |
| 2355 | |
| 2356 | udc->linux_suspended = 0; |
| 2357 | |
| 2358 | _nbu2ss_reset_controller(udc); |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 2359 | dev_info(udc->dev, " ----- VBUS OFF\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2360 | |
| 2361 | if (udc->vbus_active == 1) { |
| 2362 | /* VBUS OFF */ |
| 2363 | udc->vbus_active = 0; |
| 2364 | if (udc->usb_suspended) { |
| 2365 | udc->usb_suspended = 0; |
| 2366 | /* _nbu2ss_reset_controller(udc); */ |
| 2367 | } |
| 2368 | udc->devstate = USB_STATE_NOTATTACHED; |
| 2369 | |
| 2370 | _nbu2ss_quiesce(udc); |
| 2371 | if (udc->driver) { |
| 2372 | spin_unlock(&udc->lock); |
| 2373 | udc->driver->disconnect(&udc->gadget); |
| 2374 | spin_lock(&udc->lock); |
| 2375 | } |
| 2376 | |
| 2377 | _nbu2ss_disable_controller(udc); |
| 2378 | } |
| 2379 | } else { |
| 2380 | mdelay(5); /* wait (5ms) */ |
| 2381 | reg_dt = gpio_get_value(VBUS_VALUE); |
| 2382 | if (reg_dt == 0) |
| 2383 | return; |
| 2384 | |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 2385 | dev_info(udc->dev, " ----- VBUS ON\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2386 | |
| 2387 | if (udc->linux_suspended) |
| 2388 | return; |
| 2389 | |
| 2390 | if (udc->vbus_active == 0) { |
| 2391 | /* VBUS ON */ |
| 2392 | udc->vbus_active = 1; |
| 2393 | udc->devstate = USB_STATE_POWERED; |
| 2394 | |
| 2395 | nret = _nbu2ss_enable_controller(udc); |
| 2396 | if (nret < 0) { |
| 2397 | _nbu2ss_disable_controller(udc); |
| 2398 | udc->vbus_active = 0; |
| 2399 | return; |
| 2400 | } |
| 2401 | |
| 2402 | _nbu2ss_pullup(udc, 1); |
| 2403 | |
| 2404 | #ifdef UDC_DEBUG_DUMP |
| 2405 | _nbu2ss_dump_register(udc); |
| 2406 | #endif /* UDC_DEBUG_DUMP */ |
| 2407 | |
| 2408 | } else { |
| 2409 | if (udc->devstate == USB_STATE_POWERED) |
| 2410 | _nbu2ss_pullup(udc, 1); |
| 2411 | } |
| 2412 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2413 | } |
| 2414 | |
| 2415 | /*-------------------------------------------------------------------------*/ |
| 2416 | static inline void _nbu2ss_int_bus_reset(struct nbu2ss_udc *udc) |
| 2417 | { |
| 2418 | udc->devstate = USB_STATE_DEFAULT; |
| 2419 | udc->remote_wakeup = 0; |
| 2420 | |
| 2421 | _nbu2ss_quiesce(udc); |
| 2422 | |
| 2423 | udc->ep0state = EP0_IDLE; |
| 2424 | } |
| 2425 | |
| 2426 | /*-------------------------------------------------------------------------*/ |
| 2427 | static inline void _nbu2ss_int_usb_resume(struct nbu2ss_udc *udc) |
| 2428 | { |
| 2429 | if (udc->usb_suspended == 1) { |
| 2430 | udc->usb_suspended = 0; |
| 2431 | if (udc->driver && udc->driver->resume) { |
| 2432 | spin_unlock(&udc->lock); |
| 2433 | udc->driver->resume(&udc->gadget); |
| 2434 | spin_lock(&udc->lock); |
| 2435 | } |
| 2436 | } |
| 2437 | } |
| 2438 | |
| 2439 | /*-------------------------------------------------------------------------*/ |
| 2440 | static inline void _nbu2ss_int_usb_suspend(struct nbu2ss_udc *udc) |
| 2441 | { |
| 2442 | u32 reg_dt; |
| 2443 | |
| 2444 | if (udc->usb_suspended == 0) { |
| 2445 | reg_dt = gpio_get_value(VBUS_VALUE); |
| 2446 | |
| 2447 | if (reg_dt == 0) |
| 2448 | return; |
| 2449 | |
| 2450 | udc->usb_suspended = 1; |
| 2451 | if (udc->driver && udc->driver->suspend) { |
| 2452 | spin_unlock(&udc->lock); |
| 2453 | udc->driver->suspend(&udc->gadget); |
| 2454 | spin_lock(&udc->lock); |
| 2455 | } |
| 2456 | |
| 2457 | _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, SUSPEND); |
| 2458 | } |
| 2459 | } |
| 2460 | |
| 2461 | /*-------------------------------------------------------------------------*/ |
| 2462 | /* VBUS (GPIO153) Interrupt */ |
| 2463 | static irqreturn_t _nbu2ss_vbus_irq(int irq, void *_udc) |
| 2464 | { |
| 2465 | struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; |
| 2466 | |
| 2467 | spin_lock(&udc->lock); |
| 2468 | _nbu2ss_check_vbus(udc); |
| 2469 | spin_unlock(&udc->lock); |
| 2470 | |
| 2471 | return IRQ_HANDLED; |
| 2472 | } |
| 2473 | |
| 2474 | /*-------------------------------------------------------------------------*/ |
| 2475 | /* Interrupt (udc) */ |
| 2476 | static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc) |
| 2477 | { |
| 2478 | u8 suspend_flag = 0; |
| 2479 | u32 status; |
| 2480 | u32 epnum, int_bit; |
| 2481 | |
| 2482 | struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 2483 | struct fc_regs *preg = udc->p_regs; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2484 | |
| 2485 | if (gpio_get_value(VBUS_VALUE) == 0) { |
| 2486 | _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); |
| 2487 | _nbu2ss_writel(&preg->USB_INT_ENA, 0); |
| 2488 | return IRQ_HANDLED; |
| 2489 | } |
| 2490 | |
| 2491 | spin_lock(&udc->lock); |
| 2492 | |
| 2493 | for (;;) { |
| 2494 | if (gpio_get_value(VBUS_VALUE) == 0) { |
| 2495 | _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); |
| 2496 | _nbu2ss_writel(&preg->USB_INT_ENA, 0); |
| 2497 | status = 0; |
| 2498 | } else |
| 2499 | status = _nbu2ss_readl(&preg->USB_INT_STA); |
| 2500 | |
| 2501 | if (status == 0) |
| 2502 | break; |
| 2503 | |
| 2504 | _nbu2ss_writel(&preg->USB_INT_STA, ~(status & USB_INT_STA_RW)); |
| 2505 | |
| 2506 | if (status & USB_RST_INT) { |
| 2507 | /* USB Reset */ |
| 2508 | _nbu2ss_int_bus_reset(udc); |
| 2509 | } |
| 2510 | |
| 2511 | if (status & RSUM_INT) { |
| 2512 | /* Resume */ |
| 2513 | _nbu2ss_int_usb_resume(udc); |
| 2514 | } |
| 2515 | |
| 2516 | if (status & SPND_INT) { |
| 2517 | /* Suspend */ |
| 2518 | suspend_flag = 1; |
| 2519 | } |
| 2520 | |
| 2521 | if (status & EPn_INT) { |
| 2522 | /* EP INT */ |
| 2523 | int_bit = status >> 8; |
| 2524 | |
| 2525 | for (epnum = 0; epnum < NUM_ENDPOINTS; epnum++) { |
| 2526 | |
| 2527 | if (0x01 & int_bit) |
| 2528 | _nbu2ss_ep_int(udc, epnum); |
| 2529 | |
| 2530 | int_bit >>= 1; |
| 2531 | |
| 2532 | if (int_bit == 0) |
| 2533 | break; |
| 2534 | } |
| 2535 | } |
| 2536 | } |
| 2537 | |
| 2538 | if (suspend_flag) |
| 2539 | _nbu2ss_int_usb_suspend(udc); |
| 2540 | |
| 2541 | spin_unlock(&udc->lock); |
| 2542 | |
| 2543 | return IRQ_HANDLED; |
| 2544 | } |
| 2545 | |
| 2546 | /*-------------------------------------------------------------------------*/ |
| 2547 | /* usb_ep_ops */ |
| 2548 | static int nbu2ss_ep_enable( |
| 2549 | struct usb_ep *_ep, |
| 2550 | const struct usb_endpoint_descriptor *desc) |
| 2551 | { |
| 2552 | u8 ep_type; |
| 2553 | unsigned long flags; |
| 2554 | |
| 2555 | struct nbu2ss_ep *ep; |
| 2556 | struct nbu2ss_udc *udc; |
| 2557 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2558 | if ((!_ep) || (!desc)) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2559 | pr_err(" *** %s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2560 | return -EINVAL; |
| 2561 | } |
| 2562 | |
| 2563 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2564 | if ((!ep) || (!ep->udc)) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2565 | pr_err(" *** %s, ep == NULL !!\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2566 | return -EINVAL; |
| 2567 | } |
| 2568 | |
Tapasweni Pathak | 3f3efca | 2014-10-30 22:03:36 +0530 | [diff] [blame] | 2569 | ep_type = usb_endpoint_type(desc); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2570 | if ((ep_type == USB_ENDPOINT_XFER_CONTROL) |
| 2571 | || (ep_type == USB_ENDPOINT_XFER_ISOC)) { |
| 2572 | |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2573 | pr_err(" *** %s, bat bmAttributes\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2574 | return -EINVAL; |
| 2575 | } |
| 2576 | |
| 2577 | udc = ep->udc; |
| 2578 | if (udc->vbus_active == 0) |
| 2579 | return -ESHUTDOWN; |
| 2580 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2581 | if ((!udc->driver) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2582 | || (udc->gadget.speed == USB_SPEED_UNKNOWN)) { |
| 2583 | |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2584 | dev_err(ep->udc->dev, " *** %s, udc !!\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2585 | return -ESHUTDOWN; |
| 2586 | } |
| 2587 | |
| 2588 | spin_lock_irqsave(&udc->lock, flags); |
| 2589 | |
| 2590 | ep->desc = desc; |
Tapasweni Pathak | 3f3efca | 2014-10-30 22:03:36 +0530 | [diff] [blame] | 2591 | ep->epnum = usb_endpoint_num(desc); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2592 | ep->direct = desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK; |
| 2593 | ep->ep_type = ep_type; |
| 2594 | ep->wedged = 0; |
| 2595 | ep->halted = FALSE; |
| 2596 | ep->stalled = FALSE; |
| 2597 | |
| 2598 | ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); |
| 2599 | |
| 2600 | /* DMA setting */ |
| 2601 | _nbu2ss_ep_dma_init(udc, ep); |
| 2602 | |
| 2603 | /* Endpoint setting */ |
| 2604 | _nbu2ss_ep_init(udc, ep); |
| 2605 | |
| 2606 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2607 | |
| 2608 | return 0; |
| 2609 | } |
| 2610 | |
| 2611 | /*-------------------------------------------------------------------------*/ |
| 2612 | static int nbu2ss_ep_disable(struct usb_ep *_ep) |
| 2613 | { |
| 2614 | struct nbu2ss_ep *ep; |
| 2615 | struct nbu2ss_udc *udc; |
| 2616 | unsigned long flags; |
| 2617 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2618 | if (!_ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2619 | pr_err(" *** %s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2620 | return -EINVAL; |
| 2621 | } |
| 2622 | |
| 2623 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2624 | if ((!ep) || (!ep->udc)) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2625 | pr_err("udc: *** %s, ep == NULL !!\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2626 | return -EINVAL; |
| 2627 | } |
| 2628 | |
| 2629 | udc = ep->udc; |
| 2630 | if (udc->vbus_active == 0) |
| 2631 | return -ESHUTDOWN; |
| 2632 | |
| 2633 | spin_lock_irqsave(&udc->lock, flags); |
| 2634 | _nbu2ss_nuke(udc, ep, -EINPROGRESS); /* dequeue request */ |
| 2635 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2636 | |
| 2637 | return 0; |
| 2638 | } |
| 2639 | |
| 2640 | /*-------------------------------------------------------------------------*/ |
| 2641 | static struct usb_request *nbu2ss_ep_alloc_request( |
| 2642 | struct usb_ep *ep, |
| 2643 | gfp_t gfp_flags) |
| 2644 | { |
| 2645 | struct nbu2ss_req *req; |
| 2646 | |
| 2647 | req = kzalloc(sizeof(*req), gfp_flags); |
| 2648 | if (!req) |
| 2649 | return 0; |
| 2650 | |
| 2651 | #ifdef USE_DMA |
| 2652 | req->req.dma = DMA_ADDR_INVALID; |
| 2653 | #endif |
| 2654 | INIT_LIST_HEAD(&req->queue); |
| 2655 | |
| 2656 | return &req->req; |
| 2657 | } |
| 2658 | |
| 2659 | /*-------------------------------------------------------------------------*/ |
| 2660 | static void nbu2ss_ep_free_request( |
| 2661 | struct usb_ep *_ep, |
| 2662 | struct usb_request *_req) |
| 2663 | { |
| 2664 | struct nbu2ss_req *req; |
| 2665 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2666 | if (_req) { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2667 | req = container_of(_req, struct nbu2ss_req, req); |
| 2668 | |
Tapasweni Pathak | a5a89d7 | 2014-10-21 09:48:58 +0530 | [diff] [blame] | 2669 | kfree(req); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2670 | } |
| 2671 | } |
| 2672 | |
| 2673 | /*-------------------------------------------------------------------------*/ |
| 2674 | static int nbu2ss_ep_queue( |
| 2675 | struct usb_ep *_ep, |
| 2676 | struct usb_request *_req, |
| 2677 | gfp_t gfp_flags) |
| 2678 | { |
| 2679 | struct nbu2ss_req *req; |
| 2680 | struct nbu2ss_ep *ep; |
| 2681 | struct nbu2ss_udc *udc; |
| 2682 | unsigned long flags; |
| 2683 | bool bflag; |
| 2684 | int result = -EINVAL; |
| 2685 | |
| 2686 | /* catch various bogus parameters */ |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2687 | if ((!_ep) || (!_req)) { |
| 2688 | if (!_ep) |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2689 | pr_err("udc: %s --- _ep == NULL\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2690 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2691 | if (!_req) |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2692 | pr_err("udc: %s --- _req == NULL\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2693 | |
| 2694 | return -EINVAL; |
| 2695 | } |
| 2696 | |
| 2697 | req = container_of(_req, struct nbu2ss_req, req); |
| 2698 | if (unlikely |
| 2699 | (!_req->complete || !_req->buf |
| 2700 | || !list_empty(&req->queue))) { |
| 2701 | |
| 2702 | if (!_req->complete) |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2703 | pr_err("udc: %s --- !_req->complete\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2704 | |
| 2705 | if (!_req->buf) |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2706 | pr_err("udc:%s --- !_req->buf\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2707 | |
| 2708 | if (!list_empty(&req->queue)) |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2709 | pr_err("%s --- !list_empty(&req->queue)\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2710 | |
| 2711 | return -EINVAL; |
| 2712 | } |
| 2713 | |
| 2714 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
| 2715 | udc = ep->udc; |
| 2716 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2717 | if (udc->vbus_active == 0) { |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 2718 | dev_info(udc->dev, "Can't ep_queue (VBUS OFF)\n"); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2719 | return -ESHUTDOWN; |
| 2720 | } |
| 2721 | |
| 2722 | if (unlikely(!udc->driver)) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2723 | dev_err(udc->dev, "%s, bogus device state %p\n", __func__, |
| 2724 | udc->driver); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2725 | return -ESHUTDOWN; |
| 2726 | } |
| 2727 | |
| 2728 | spin_lock_irqsave(&udc->lock, flags); |
| 2729 | |
| 2730 | #ifdef USE_DMA |
| 2731 | if ((u32)req->req.buf & 0x3) |
| 2732 | req->unaligned = TRUE; |
| 2733 | else |
| 2734 | req->unaligned = FALSE; |
| 2735 | |
| 2736 | if (req->unaligned) { |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2737 | if (!ep->virt_buf) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2738 | ep->virt_buf = (u8 *)dma_alloc_coherent( |
| 2739 | NULL, PAGE_SIZE, |
Tapasweni Pathak | 4a0721b | 2015-02-20 18:43:53 +0530 | [diff] [blame] | 2740 | &ep->phys_buf, GFP_ATOMIC | GFP_DMA); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2741 | if (ep->epnum > 0) { |
| 2742 | if (ep->direct == USB_DIR_IN) |
| 2743 | memcpy(ep->virt_buf, req->req.buf, |
| 2744 | req->req.length); |
| 2745 | } |
| 2746 | } |
| 2747 | |
| 2748 | if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT) && |
| 2749 | (req->req.dma != 0)) |
| 2750 | _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_OUT); |
| 2751 | #endif |
| 2752 | |
| 2753 | _req->status = -EINPROGRESS; |
| 2754 | _req->actual = 0; |
| 2755 | |
| 2756 | bflag = list_empty(&ep->queue); |
| 2757 | list_add_tail(&req->queue, &ep->queue); |
| 2758 | |
| 2759 | if ((bflag != FALSE) && (ep->stalled == FALSE)) { |
| 2760 | |
| 2761 | result = _nbu2ss_start_transfer(udc, ep, req, FALSE); |
| 2762 | if (result < 0) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2763 | dev_err(udc->dev, " *** %s, result = %d\n", __func__, |
| 2764 | result); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2765 | list_del(&req->queue); |
| 2766 | } else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) { |
| 2767 | #ifdef USE_DMA |
| 2768 | if (req->req.length < 4 && |
| 2769 | req->req.length == req->req.actual) |
| 2770 | #else |
| 2771 | if (req->req.length == req->req.actual) |
| 2772 | #endif |
| 2773 | _nbu2ss_ep_done(ep, req, result); |
| 2774 | } |
| 2775 | } |
| 2776 | |
| 2777 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2778 | |
| 2779 | return 0; |
| 2780 | } |
| 2781 | |
| 2782 | /*-------------------------------------------------------------------------*/ |
| 2783 | static int nbu2ss_ep_dequeue( |
| 2784 | struct usb_ep *_ep, |
| 2785 | struct usb_request *_req) |
| 2786 | { |
| 2787 | struct nbu2ss_req *req; |
| 2788 | struct nbu2ss_ep *ep; |
| 2789 | struct nbu2ss_udc *udc; |
| 2790 | unsigned long flags; |
| 2791 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2792 | /* catch various bogus parameters */ |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2793 | if ((!_ep) || (!_req)) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2794 | /* pr_err("%s, bad param(1)\n", __func__); */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2795 | return -EINVAL; |
| 2796 | } |
| 2797 | |
| 2798 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
| 2799 | if (!ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2800 | pr_err("%s, ep == NULL !!\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2801 | return -EINVAL; |
| 2802 | } |
| 2803 | |
| 2804 | udc = ep->udc; |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2805 | if (!udc) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2806 | return -EINVAL; |
| 2807 | |
| 2808 | spin_lock_irqsave(&udc->lock, flags); |
| 2809 | |
| 2810 | /* make sure it's actually queued on this endpoint */ |
| 2811 | list_for_each_entry(req, &ep->queue, queue) { |
| 2812 | if (&req->req == _req) |
| 2813 | break; |
| 2814 | } |
| 2815 | if (&req->req != _req) { |
| 2816 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2817 | pr_debug("%s no queue(EINVAL)\n", __func__); |
| 2818 | return -EINVAL; |
| 2819 | } |
| 2820 | |
| 2821 | _nbu2ss_ep_done(ep, req, -ECONNRESET); |
| 2822 | |
| 2823 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2824 | |
| 2825 | return 0; |
| 2826 | } |
| 2827 | |
| 2828 | /*-------------------------------------------------------------------------*/ |
| 2829 | static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value) |
| 2830 | { |
| 2831 | u8 ep_adrs; |
| 2832 | unsigned long flags; |
| 2833 | |
| 2834 | struct nbu2ss_ep *ep; |
| 2835 | struct nbu2ss_udc *udc; |
| 2836 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2837 | if (!_ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2838 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2839 | return -EINVAL; |
| 2840 | } |
| 2841 | |
| 2842 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
| 2843 | if (!ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2844 | pr_err("%s, bad ep\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2845 | return -EINVAL; |
| 2846 | } |
| 2847 | |
| 2848 | udc = ep->udc; |
| 2849 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2850 | dev_err(ep->udc->dev, " *** %s, bad udc\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2851 | return -EINVAL; |
| 2852 | } |
| 2853 | |
| 2854 | spin_lock_irqsave(&udc->lock, flags); |
| 2855 | |
| 2856 | ep_adrs = ep->epnum | ep->direct; |
| 2857 | if (value == 0) { |
| 2858 | _nbu2ss_set_endpoint_stall(udc, ep_adrs, value); |
| 2859 | ep->stalled = FALSE; |
| 2860 | } else { |
| 2861 | if (list_empty(&ep->queue)) |
| 2862 | _nbu2ss_epn_set_stall(udc, ep); |
| 2863 | else |
| 2864 | ep->stalled = TRUE; |
| 2865 | } |
| 2866 | |
| 2867 | if (value == 0) |
| 2868 | ep->wedged = 0; |
| 2869 | |
| 2870 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2871 | |
| 2872 | return 0; |
| 2873 | } |
| 2874 | |
| 2875 | static int nbu2ss_ep_set_wedge(struct usb_ep *_ep) |
| 2876 | { |
| 2877 | return nbu2ss_ep_set_halt(_ep, 1); |
| 2878 | } |
| 2879 | |
| 2880 | /*-------------------------------------------------------------------------*/ |
| 2881 | static int nbu2ss_ep_fifo_status(struct usb_ep *_ep) |
| 2882 | { |
| 2883 | u32 data; |
| 2884 | struct nbu2ss_ep *ep; |
| 2885 | struct nbu2ss_udc *udc; |
| 2886 | unsigned long flags; |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 2887 | struct fc_regs *preg; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2888 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2889 | if (!_ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2890 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2891 | return -EINVAL; |
| 2892 | } |
| 2893 | |
| 2894 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
| 2895 | if (!ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2896 | pr_err("%s, bad ep\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2897 | return -EINVAL; |
| 2898 | } |
| 2899 | |
| 2900 | udc = ep->udc; |
| 2901 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2902 | dev_err(ep->udc->dev, "%s, bad udc\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2903 | return -EINVAL; |
| 2904 | } |
| 2905 | |
| 2906 | preg = udc->p_regs; |
| 2907 | |
| 2908 | data = gpio_get_value(VBUS_VALUE); |
| 2909 | if (data == 0) |
| 2910 | return -EINVAL; |
| 2911 | |
| 2912 | spin_lock_irqsave(&udc->lock, flags); |
| 2913 | |
| 2914 | if (ep->epnum == 0) { |
| 2915 | data = _nbu2ss_readl(&preg->EP0_LENGTH) & EP0_LDATA; |
| 2916 | |
| 2917 | } else { |
| 2918 | data = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_LEN_DCNT) |
| 2919 | & EPn_LDATA; |
| 2920 | } |
| 2921 | |
| 2922 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2923 | |
| 2924 | return 0; |
| 2925 | } |
| 2926 | |
| 2927 | /*-------------------------------------------------------------------------*/ |
| 2928 | static void nbu2ss_ep_fifo_flush(struct usb_ep *_ep) |
| 2929 | { |
| 2930 | u32 data; |
| 2931 | struct nbu2ss_ep *ep; |
| 2932 | struct nbu2ss_udc *udc; |
| 2933 | unsigned long flags; |
| 2934 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2935 | if (!_ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2936 | pr_err("udc: %s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2937 | return; |
| 2938 | } |
| 2939 | |
| 2940 | ep = container_of(_ep, struct nbu2ss_ep, ep); |
Julia Lawall | bd7de5c | 2015-04-04 16:59:30 +0200 | [diff] [blame] | 2941 | if (!ep) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2942 | pr_err("udc: %s, bad ep\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2943 | return; |
| 2944 | } |
| 2945 | |
| 2946 | udc = ep->udc; |
| 2947 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2948 | dev_err(ep->udc->dev, "%s, bad udc\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2949 | return; |
| 2950 | } |
| 2951 | |
| 2952 | data = gpio_get_value(VBUS_VALUE); |
| 2953 | if (data == 0) |
| 2954 | return; |
| 2955 | |
| 2956 | spin_lock_irqsave(&udc->lock, flags); |
| 2957 | _nbu2ss_fifo_flush(udc, ep); |
| 2958 | spin_unlock_irqrestore(&udc->lock, flags); |
| 2959 | } |
| 2960 | |
| 2961 | /*-------------------------------------------------------------------------*/ |
| 2962 | static struct usb_ep_ops nbu2ss_ep_ops = { |
| 2963 | .enable = nbu2ss_ep_enable, |
| 2964 | .disable = nbu2ss_ep_disable, |
| 2965 | |
| 2966 | .alloc_request = nbu2ss_ep_alloc_request, |
| 2967 | .free_request = nbu2ss_ep_free_request, |
| 2968 | |
| 2969 | .queue = nbu2ss_ep_queue, |
| 2970 | .dequeue = nbu2ss_ep_dequeue, |
| 2971 | |
| 2972 | .set_halt = nbu2ss_ep_set_halt, |
| 2973 | .set_wedge = nbu2ss_ep_set_wedge, |
| 2974 | |
| 2975 | .fifo_status = nbu2ss_ep_fifo_status, |
| 2976 | .fifo_flush = nbu2ss_ep_fifo_flush, |
| 2977 | }; |
| 2978 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2979 | /*-------------------------------------------------------------------------*/ |
| 2980 | /* usb_gadget_ops */ |
| 2981 | |
| 2982 | /*-------------------------------------------------------------------------*/ |
| 2983 | static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget) |
| 2984 | { |
| 2985 | u32 data; |
| 2986 | struct nbu2ss_udc *udc; |
| 2987 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2988 | if (!pgadget) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2989 | pr_err("udc: %s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2990 | return -EINVAL; |
| 2991 | } |
| 2992 | |
| 2993 | udc = container_of(pgadget, struct nbu2ss_udc, gadget); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 2994 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 2995 | dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 2996 | return -EINVAL; |
| 2997 | } |
| 2998 | |
| 2999 | data = gpio_get_value(VBUS_VALUE); |
| 3000 | if (data == 0) |
| 3001 | return -EINVAL; |
| 3002 | |
| 3003 | data = _nbu2ss_readl(&udc->p_regs->USB_ADDRESS) & FRAME; |
| 3004 | |
| 3005 | return data; |
| 3006 | } |
| 3007 | |
| 3008 | /*-------------------------------------------------------------------------*/ |
| 3009 | static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget) |
| 3010 | { |
| 3011 | int i; |
| 3012 | u32 data; |
| 3013 | |
| 3014 | struct nbu2ss_udc *udc; |
| 3015 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3016 | if (!pgadget) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3017 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3018 | return -EINVAL; |
| 3019 | } |
| 3020 | |
| 3021 | udc = container_of(pgadget, struct nbu2ss_udc, gadget); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3022 | if (!udc) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3023 | dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3024 | return -EINVAL; |
| 3025 | } |
| 3026 | |
| 3027 | data = gpio_get_value(VBUS_VALUE); |
| 3028 | if (data == 0) { |
Haneen Mohammed | 93275c8 | 2015-03-16 01:26:37 +0300 | [diff] [blame] | 3029 | dev_warn(&pgadget->dev, "VBUS LEVEL = %d\n", data); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3030 | return -EINVAL; |
| 3031 | } |
| 3032 | |
| 3033 | _nbu2ss_bitset(&udc->p_regs->EPCTR, PLL_RESUME); |
| 3034 | |
| 3035 | for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { |
| 3036 | data = _nbu2ss_readl(&udc->p_regs->EPCTR); |
| 3037 | |
| 3038 | if (data & PLL_LOCK) |
| 3039 | break; |
| 3040 | } |
| 3041 | |
| 3042 | _nbu2ss_bitclr(&udc->p_regs->EPCTR, PLL_RESUME); |
| 3043 | |
| 3044 | return 0; |
| 3045 | } |
| 3046 | |
| 3047 | /*-------------------------------------------------------------------------*/ |
| 3048 | static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget, |
| 3049 | int is_selfpowered) |
| 3050 | { |
Peter Chen | 1fa2df0 | 2015-02-03 10:37:06 +0800 | [diff] [blame] | 3051 | struct nbu2ss_udc *udc; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3052 | unsigned long flags; |
| 3053 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3054 | if (!pgadget) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3055 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3056 | return -EINVAL; |
| 3057 | } |
| 3058 | |
Peter Chen | 1fa2df0 | 2015-02-03 10:37:06 +0800 | [diff] [blame] | 3059 | udc = container_of(pgadget, struct nbu2ss_udc, gadget); |
| 3060 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3061 | spin_lock_irqsave(&udc->lock, flags); |
Peter Chen | 9239d88 | 2015-01-28 16:32:27 +0800 | [diff] [blame] | 3062 | pgadget->is_selfpowered = (is_selfpowered != 0); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3063 | spin_unlock_irqrestore(&udc->lock, flags); |
| 3064 | |
| 3065 | return 0; |
| 3066 | } |
| 3067 | |
| 3068 | /*-------------------------------------------------------------------------*/ |
| 3069 | static int nbu2ss_gad_vbus_session(struct usb_gadget *pgadget, int is_active) |
| 3070 | { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3071 | return 0; |
| 3072 | } |
| 3073 | |
| 3074 | /*-------------------------------------------------------------------------*/ |
| 3075 | static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned mA) |
| 3076 | { |
| 3077 | struct nbu2ss_udc *udc; |
| 3078 | unsigned long flags; |
| 3079 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3080 | if (!pgadget) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3081 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3082 | return -EINVAL; |
| 3083 | } |
| 3084 | |
| 3085 | udc = container_of(pgadget, struct nbu2ss_udc, gadget); |
| 3086 | |
| 3087 | spin_lock_irqsave(&udc->lock, flags); |
| 3088 | udc->mA = mA; |
| 3089 | spin_unlock_irqrestore(&udc->lock, flags); |
| 3090 | |
| 3091 | return 0; |
| 3092 | } |
| 3093 | |
| 3094 | /*-------------------------------------------------------------------------*/ |
| 3095 | static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on) |
| 3096 | { |
| 3097 | struct nbu2ss_udc *udc; |
| 3098 | unsigned long flags; |
| 3099 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3100 | if (!pgadget) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3101 | pr_err("%s, bad param\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3102 | return -EINVAL; |
| 3103 | } |
| 3104 | |
| 3105 | udc = container_of(pgadget, struct nbu2ss_udc, gadget); |
| 3106 | |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3107 | if (!udc->driver) { |
Masanari Iida | f02935c | 2014-09-13 01:14:30 +0900 | [diff] [blame] | 3108 | pr_warn("%s, Not Regist Driver\n", __func__); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3109 | return -EINVAL; |
| 3110 | } |
| 3111 | |
| 3112 | if (udc->vbus_active == 0) |
| 3113 | return -ESHUTDOWN; |
| 3114 | |
| 3115 | spin_lock_irqsave(&udc->lock, flags); |
| 3116 | _nbu2ss_pullup(udc, is_on); |
| 3117 | spin_unlock_irqrestore(&udc->lock, flags); |
| 3118 | |
| 3119 | return 0; |
| 3120 | } |
| 3121 | |
| 3122 | /*-------------------------------------------------------------------------*/ |
| 3123 | static int nbu2ss_gad_ioctl( |
| 3124 | struct usb_gadget *pgadget, |
| 3125 | unsigned code, |
| 3126 | unsigned long param) |
| 3127 | { |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3128 | return 0; |
| 3129 | } |
| 3130 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3131 | static const struct usb_gadget_ops nbu2ss_gadget_ops = { |
| 3132 | .get_frame = nbu2ss_gad_get_frame, |
| 3133 | .wakeup = nbu2ss_gad_wakeup, |
| 3134 | .set_selfpowered = nbu2ss_gad_set_selfpowered, |
| 3135 | .vbus_session = nbu2ss_gad_vbus_session, |
| 3136 | .vbus_draw = nbu2ss_gad_vbus_draw, |
| 3137 | .pullup = nbu2ss_gad_pullup, |
| 3138 | .ioctl = nbu2ss_gad_ioctl, |
| 3139 | }; |
| 3140 | |
Robert Baldyga | 68b5c94 | 2015-07-31 16:00:16 +0200 | [diff] [blame] | 3141 | static const struct { |
| 3142 | const char *name; |
| 3143 | const struct usb_ep_caps caps; |
| 3144 | } ep_info[NUM_ENDPOINTS] = { |
| 3145 | #define EP_INFO(_name, _caps) \ |
| 3146 | { \ |
| 3147 | .name = _name, \ |
| 3148 | .caps = _caps, \ |
| 3149 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3150 | |
Robert Baldyga | 68b5c94 | 2015-07-31 16:00:16 +0200 | [diff] [blame] | 3151 | EP_INFO("ep0", |
| 3152 | USB_EP_CAPS(USB_EP_CAPS_TYPE_CONTROL, USB_EP_CAPS_DIR_ALL)), |
| 3153 | EP_INFO("ep1-bulk", |
| 3154 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3155 | EP_INFO("ep2-bulk", |
| 3156 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3157 | EP_INFO("ep3in-int", |
| 3158 | USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), |
| 3159 | EP_INFO("ep4-iso", |
| 3160 | USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), |
| 3161 | EP_INFO("ep5-iso", |
| 3162 | USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), |
| 3163 | EP_INFO("ep6-bulk", |
| 3164 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3165 | EP_INFO("ep7-bulk", |
| 3166 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3167 | EP_INFO("ep8in-int", |
| 3168 | USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), |
| 3169 | EP_INFO("ep9-iso", |
| 3170 | USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), |
| 3171 | EP_INFO("epa-iso", |
| 3172 | USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_ALL)), |
| 3173 | EP_INFO("epb-bulk", |
| 3174 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3175 | EP_INFO("epc-bulk", |
| 3176 | USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_ALL)), |
| 3177 | EP_INFO("epdin-int", |
| 3178 | USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), |
| 3179 | |
| 3180 | #undef EP_INFO |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3181 | }; |
| 3182 | |
| 3183 | /*-------------------------------------------------------------------------*/ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3184 | static void __init nbu2ss_drv_ep_init(struct nbu2ss_udc *udc) |
| 3185 | { |
| 3186 | int i; |
| 3187 | |
| 3188 | INIT_LIST_HEAD(&udc->gadget.ep_list); |
| 3189 | udc->gadget.ep0 = &udc->ep[0].ep; |
| 3190 | |
Chris Rorvick | 737fee1 | 2015-01-30 17:45:45 -0600 | [diff] [blame] | 3191 | for (i = 0; i < NUM_ENDPOINTS; i++) { |
| 3192 | struct nbu2ss_ep *ep = &udc->ep[i]; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3193 | |
Chris Rorvick | 737fee1 | 2015-01-30 17:45:45 -0600 | [diff] [blame] | 3194 | ep->udc = udc; |
| 3195 | ep->desc = NULL; |
| 3196 | |
| 3197 | ep->ep.driver_data = NULL; |
Robert Baldyga | 68b5c94 | 2015-07-31 16:00:16 +0200 | [diff] [blame] | 3198 | ep->ep.name = ep_info[i].name; |
| 3199 | ep->ep.caps = ep_info[i].caps; |
Chris Rorvick | 737fee1 | 2015-01-30 17:45:45 -0600 | [diff] [blame] | 3200 | ep->ep.ops = &nbu2ss_ep_ops; |
| 3201 | |
Robert Baldyga | cb009d6 | 2015-07-13 11:03:53 +0200 | [diff] [blame] | 3202 | usb_ep_set_maxpacket_limit(&ep->ep, |
| 3203 | i == 0 ? EP0_PACKETSIZE : EP_PACKETSIZE); |
Chris Rorvick | 737fee1 | 2015-01-30 17:45:45 -0600 | [diff] [blame] | 3204 | |
| 3205 | list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); |
| 3206 | INIT_LIST_HEAD(&ep->queue); |
| 3207 | } |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3208 | |
| 3209 | list_del_init(&udc->ep[0].ep.ep_list); |
| 3210 | } |
| 3211 | |
| 3212 | /*-------------------------------------------------------------------------*/ |
| 3213 | /* platform_driver */ |
| 3214 | static int __init nbu2ss_drv_contest_init( |
| 3215 | struct platform_device *pdev, |
| 3216 | struct nbu2ss_udc *udc) |
| 3217 | { |
| 3218 | spin_lock_init(&udc->lock); |
| 3219 | udc->dev = &pdev->dev; |
| 3220 | |
Peter Chen | 9239d88 | 2015-01-28 16:32:27 +0800 | [diff] [blame] | 3221 | udc->gadget.is_selfpowered = 1; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3222 | udc->devstate = USB_STATE_NOTATTACHED; |
| 3223 | udc->pdev = pdev; |
| 3224 | udc->mA = 0; |
| 3225 | |
| 3226 | udc->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); |
| 3227 | |
| 3228 | /* init Endpoint */ |
| 3229 | nbu2ss_drv_ep_init(udc); |
| 3230 | |
| 3231 | /* init Gadget */ |
| 3232 | udc->gadget.ops = &nbu2ss_gadget_ops; |
| 3233 | udc->gadget.ep0 = &udc->ep[0].ep; |
| 3234 | udc->gadget.speed = USB_SPEED_UNKNOWN; |
| 3235 | udc->gadget.name = driver_name; |
KANG Yuxuan | a2c14e9 | 2014-07-16 10:45:01 +0800 | [diff] [blame] | 3236 | /* udc->gadget.is_dualspeed = 1; */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3237 | |
| 3238 | device_initialize(&udc->gadget.dev); |
| 3239 | |
| 3240 | dev_set_name(&udc->gadget.dev, "gadget"); |
| 3241 | udc->gadget.dev.parent = &pdev->dev; |
| 3242 | udc->gadget.dev.dma_mask = pdev->dev.dma_mask; |
| 3243 | |
| 3244 | return 0; |
| 3245 | } |
| 3246 | |
| 3247 | /* |
| 3248 | * probe - binds to the platform device |
| 3249 | */ |
| 3250 | static int nbu2ss_drv_probe(struct platform_device *pdev) |
| 3251 | { |
| 3252 | int status = -ENODEV; |
| 3253 | struct nbu2ss_udc *udc; |
Magnus Damm | 96b29ca | 2014-06-06 19:44:26 +0900 | [diff] [blame] | 3254 | struct resource *r; |
| 3255 | int irq; |
| 3256 | void __iomem *mmio_base; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3257 | |
| 3258 | udc = &udc_controller; |
| 3259 | memset(udc, 0, sizeof(struct nbu2ss_udc)); |
| 3260 | |
| 3261 | platform_set_drvdata(pdev, udc); |
| 3262 | |
Magnus Damm | 96b29ca | 2014-06-06 19:44:26 +0900 | [diff] [blame] | 3263 | /* require I/O memory and IRQ to be provided as resources */ |
| 3264 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Sachin Kamat | a790ebc | 2014-06-23 11:43:08 +0530 | [diff] [blame] | 3265 | mmio_base = devm_ioremap_resource(&pdev->dev, r); |
| 3266 | if (IS_ERR(mmio_base)) |
Magnus Damm | 96b29ca | 2014-06-06 19:44:26 +0900 | [diff] [blame] | 3267 | return PTR_ERR(mmio_base); |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3268 | |
Magnus Damm | 96b29ca | 2014-06-06 19:44:26 +0900 | [diff] [blame] | 3269 | irq = platform_get_irq(pdev, 0); |
| 3270 | if (irq < 0) { |
| 3271 | dev_err(&pdev->dev, "failed to get IRQ\n"); |
| 3272 | return irq; |
| 3273 | } |
| 3274 | status = devm_request_irq(&pdev->dev, irq, _nbu2ss_udc_irq, |
| 3275 | 0, driver_name, udc); |
| 3276 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3277 | /* IO Memory */ |
Haneen Mohammed | f6ef6c0 | 2015-03-02 20:01:42 +0300 | [diff] [blame] | 3278 | udc->p_regs = (struct fc_regs *)mmio_base; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3279 | |
| 3280 | /* USB Function Controller Interrupt */ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3281 | if (status != 0) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3282 | dev_err(udc->dev, "request_irq(USB_UDC_IRQ_1) failed\n"); |
Ravi Teja Darbha | c648a57 | 2015-09-05 01:08:29 +0530 | [diff] [blame] | 3283 | return status; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3284 | } |
| 3285 | |
| 3286 | /* Driver Initialization */ |
| 3287 | status = nbu2ss_drv_contest_init(pdev, udc); |
| 3288 | if (status < 0) { |
| 3289 | /* Error */ |
Ravi Teja Darbha | c648a57 | 2015-09-05 01:08:29 +0530 | [diff] [blame] | 3290 | return status; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3291 | } |
| 3292 | |
| 3293 | /* VBUS Interrupt */ |
| 3294 | irq_set_irq_type(INT_VBUS, IRQ_TYPE_EDGE_BOTH); |
| 3295 | status = request_irq(INT_VBUS, |
| 3296 | _nbu2ss_vbus_irq, |
| 3297 | IRQF_SHARED, |
| 3298 | driver_name, |
| 3299 | udc); |
| 3300 | |
| 3301 | if (status != 0) { |
Haneen Mohammed | 8868927 | 2015-03-02 21:37:38 +0300 | [diff] [blame] | 3302 | dev_err(udc->dev, "request_irq(INT_VBUS) failed\n"); |
Ravi Teja Darbha | c648a57 | 2015-09-05 01:08:29 +0530 | [diff] [blame] | 3303 | return status; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3304 | } |
| 3305 | |
| 3306 | return status; |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3307 | } |
| 3308 | |
| 3309 | /*-------------------------------------------------------------------------*/ |
| 3310 | static void nbu2ss_drv_shutdown(struct platform_device *pdev) |
| 3311 | { |
| 3312 | struct nbu2ss_udc *udc; |
| 3313 | |
| 3314 | udc = platform_get_drvdata(pdev); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3315 | if (!udc) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3316 | return; |
| 3317 | |
| 3318 | _nbu2ss_disable_controller(udc); |
| 3319 | } |
| 3320 | |
| 3321 | /*-------------------------------------------------------------------------*/ |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3322 | static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state) |
| 3323 | { |
| 3324 | struct nbu2ss_udc *udc; |
| 3325 | |
| 3326 | udc = platform_get_drvdata(pdev); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3327 | if (!udc) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3328 | return 0; |
| 3329 | |
| 3330 | if (udc->vbus_active) { |
| 3331 | udc->vbus_active = 0; |
| 3332 | udc->devstate = USB_STATE_NOTATTACHED; |
| 3333 | udc->linux_suspended = 1; |
| 3334 | |
| 3335 | if (udc->usb_suspended) { |
| 3336 | udc->usb_suspended = 0; |
| 3337 | _nbu2ss_reset_controller(udc); |
| 3338 | } |
| 3339 | |
| 3340 | _nbu2ss_quiesce(udc); |
| 3341 | } |
| 3342 | _nbu2ss_disable_controller(udc); |
| 3343 | |
| 3344 | return 0; |
| 3345 | } |
| 3346 | |
| 3347 | /*-------------------------------------------------------------------------*/ |
| 3348 | static int nbu2ss_drv_resume(struct platform_device *pdev) |
| 3349 | { |
| 3350 | u32 data; |
| 3351 | struct nbu2ss_udc *udc; |
| 3352 | |
| 3353 | udc = platform_get_drvdata(pdev); |
Ravi Teja Darbha | 706eb8c | 2015-09-04 13:48:22 +0530 | [diff] [blame] | 3354 | if (!udc) |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3355 | return 0; |
| 3356 | |
| 3357 | data = gpio_get_value(VBUS_VALUE); |
| 3358 | if (data) { |
| 3359 | udc->vbus_active = 1; |
| 3360 | udc->devstate = USB_STATE_POWERED; |
| 3361 | _nbu2ss_enable_controller(udc); |
| 3362 | _nbu2ss_pullup(udc, 1); |
| 3363 | } |
| 3364 | |
| 3365 | udc->linux_suspended = 0; |
| 3366 | |
| 3367 | return 0; |
| 3368 | } |
| 3369 | |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3370 | static struct platform_driver udc_driver = { |
| 3371 | .probe = nbu2ss_drv_probe, |
| 3372 | .shutdown = nbu2ss_drv_shutdown, |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3373 | .suspend = nbu2ss_drv_suspend, |
| 3374 | .resume = nbu2ss_drv_resume, |
| 3375 | .driver = { |
Paul Gortmaker | 0af61e6 | 2015-10-11 15:47:34 -0400 | [diff] [blame^] | 3376 | .name = driver_name, |
| 3377 | .suppress_bind_attrs = true, |
Magnus Damm | 33aa8d4 | 2014-06-06 19:44:17 +0900 | [diff] [blame] | 3378 | }, |
| 3379 | }; |
| 3380 | |
Paul Gortmaker | 0af61e6 | 2015-10-11 15:47:34 -0400 | [diff] [blame^] | 3381 | builtin_platform_driver(udc_driver); |