Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1 | /* |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 2 | * Copyright (C) 2004-2007,2011-2012 Freescale Semiconductor, Inc. |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 3 | * All rights reserved. |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 4 | * |
| 5 | * Author: Li Yang <leoli@freescale.com> |
| 6 | * Jiang Bo <tanya.jiang@freescale.com> |
| 7 | * |
| 8 | * Description: |
| 9 | * Freescale high-speed USB SOC DR module device controller driver. |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 10 | * This can be found on MPC8349E/MPC8313E/MPC5121E cpus. |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 11 | * The driver is previously named as mpc_udc. Based on bare board |
| 12 | * code from Dave Liu and Shlomi Gridish. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | */ |
| 19 | |
| 20 | #undef VERBOSE |
| 21 | |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/ioport.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/errno.h> |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 27 | #include <linux/err.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 28 | #include <linux/slab.h> |
| 29 | #include <linux/init.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 30 | #include <linux/list.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/proc_fs.h> |
| 33 | #include <linux/mm.h> |
| 34 | #include <linux/moduleparam.h> |
| 35 | #include <linux/device.h> |
| 36 | #include <linux/usb/ch9.h> |
David Brownell | 9454a57 | 2007-10-04 18:05:17 -0700 | [diff] [blame] | 37 | #include <linux/usb/gadget.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 38 | #include <linux/usb/otg.h> |
| 39 | #include <linux/dma-mapping.h> |
| 40 | #include <linux/platform_device.h> |
| 41 | #include <linux/fsl_devices.h> |
| 42 | #include <linux/dmapool.h> |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 43 | #include <linux/delay.h> |
Peter Chen | f0ea883 | 2013-01-17 18:03:15 +0800 | [diff] [blame] | 44 | #include <linux/of_device.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 45 | |
| 46 | #include <asm/byteorder.h> |
| 47 | #include <asm/io.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 48 | #include <asm/unaligned.h> |
| 49 | #include <asm/dma.h> |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 50 | |
| 51 | #include "fsl_usb2_udc.h" |
| 52 | |
| 53 | #define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller driver" |
| 54 | #define DRIVER_AUTHOR "Li Yang/Jiang Bo" |
| 55 | #define DRIVER_VERSION "Apr 20, 2007" |
| 56 | |
| 57 | #define DMA_ADDR_INVALID (~(dma_addr_t)0) |
| 58 | |
| 59 | static const char driver_name[] = "fsl-usb2-udc"; |
| 60 | static const char driver_desc[] = DRIVER_DESC; |
| 61 | |
Will Newton | 7483cff8 | 2008-08-12 15:39:09 +0100 | [diff] [blame] | 62 | static struct usb_dr_device *dr_regs; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 63 | |
Will Newton | 7483cff8 | 2008-08-12 15:39:09 +0100 | [diff] [blame] | 64 | static struct usb_sys_interface *usb_sys_regs; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 65 | |
| 66 | /* it is initialized in probe() */ |
| 67 | static struct fsl_udc *udc_controller = NULL; |
| 68 | |
| 69 | static const struct usb_endpoint_descriptor |
| 70 | fsl_ep0_desc = { |
| 71 | .bLength = USB_DT_ENDPOINT_SIZE, |
| 72 | .bDescriptorType = USB_DT_ENDPOINT, |
| 73 | .bEndpointAddress = 0, |
| 74 | .bmAttributes = USB_ENDPOINT_XFER_CONTROL, |
| 75 | .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD, |
| 76 | }; |
| 77 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 78 | static void fsl_ep_fifo_flush(struct usb_ep *_ep); |
| 79 | |
| 80 | #ifdef CONFIG_PPC32 |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 81 | /* |
| 82 | * On some SoCs, the USB controller registers can be big or little endian, |
| 83 | * depending on the version of the chip. In order to be able to run the |
| 84 | * same kernel binary on 2 different versions of an SoC, the BE/LE decision |
| 85 | * must be made at run time. _fsl_readl and fsl_writel are pointers to the |
| 86 | * BE or LE readl() and writel() functions, and fsl_readl() and fsl_writel() |
| 87 | * call through those pointers. Platform code for SoCs that have BE USB |
| 88 | * registers should set pdata->big_endian_mmio flag. |
| 89 | * |
| 90 | * This also applies to controller-to-cpu accessors for the USB descriptors, |
| 91 | * since their endianness is also SoC dependant. Platform code for SoCs that |
| 92 | * have BE USB descriptors should set pdata->big_endian_desc flag. |
| 93 | */ |
| 94 | static u32 _fsl_readl_be(const unsigned __iomem *p) |
| 95 | { |
| 96 | return in_be32(p); |
| 97 | } |
| 98 | |
| 99 | static u32 _fsl_readl_le(const unsigned __iomem *p) |
| 100 | { |
| 101 | return in_le32(p); |
| 102 | } |
| 103 | |
| 104 | static void _fsl_writel_be(u32 v, unsigned __iomem *p) |
| 105 | { |
| 106 | out_be32(p, v); |
| 107 | } |
| 108 | |
| 109 | static void _fsl_writel_le(u32 v, unsigned __iomem *p) |
| 110 | { |
| 111 | out_le32(p, v); |
| 112 | } |
| 113 | |
| 114 | static u32 (*_fsl_readl)(const unsigned __iomem *p); |
| 115 | static void (*_fsl_writel)(u32 v, unsigned __iomem *p); |
| 116 | |
| 117 | #define fsl_readl(p) (*_fsl_readl)((p)) |
| 118 | #define fsl_writel(v, p) (*_fsl_writel)((v), (p)) |
| 119 | |
Anatolij Gustschin | 3140d5b | 2011-06-25 23:37:29 +0200 | [diff] [blame] | 120 | static inline void fsl_set_accessors(struct fsl_usb2_platform_data *pdata) |
| 121 | { |
| 122 | if (pdata->big_endian_mmio) { |
| 123 | _fsl_readl = _fsl_readl_be; |
| 124 | _fsl_writel = _fsl_writel_be; |
| 125 | } else { |
| 126 | _fsl_readl = _fsl_readl_le; |
| 127 | _fsl_writel = _fsl_writel_le; |
| 128 | } |
| 129 | } |
| 130 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 131 | static inline u32 cpu_to_hc32(const u32 x) |
| 132 | { |
| 133 | return udc_controller->pdata->big_endian_desc |
| 134 | ? (__force u32)cpu_to_be32(x) |
| 135 | : (__force u32)cpu_to_le32(x); |
| 136 | } |
| 137 | |
| 138 | static inline u32 hc32_to_cpu(const u32 x) |
| 139 | { |
| 140 | return udc_controller->pdata->big_endian_desc |
| 141 | ? be32_to_cpu((__force __be32)x) |
| 142 | : le32_to_cpu((__force __le32)x); |
| 143 | } |
| 144 | #else /* !CONFIG_PPC32 */ |
Anatolij Gustschin | 3140d5b | 2011-06-25 23:37:29 +0200 | [diff] [blame] | 145 | static inline void fsl_set_accessors(struct fsl_usb2_platform_data *pdata) {} |
| 146 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 147 | #define fsl_readl(addr) readl(addr) |
Will Newton | c93eebb | 2008-08-12 15:39:13 +0100 | [diff] [blame] | 148 | #define fsl_writel(val32, addr) writel(val32, addr) |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 149 | #define cpu_to_hc32(x) cpu_to_le32(x) |
| 150 | #define hc32_to_cpu(x) le32_to_cpu(x) |
| 151 | #endif /* CONFIG_PPC32 */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 152 | |
| 153 | /******************************************************************** |
| 154 | * Internal Used Function |
| 155 | ********************************************************************/ |
| 156 | /*----------------------------------------------------------------- |
| 157 | * done() - retire a request; caller blocked irqs |
| 158 | * @status : request status to be set, only works when |
| 159 | * request is still in progress. |
| 160 | *--------------------------------------------------------------*/ |
| 161 | static void done(struct fsl_ep *ep, struct fsl_req *req, int status) |
| 162 | { |
| 163 | struct fsl_udc *udc = NULL; |
| 164 | unsigned char stopped = ep->stopped; |
| 165 | struct ep_td_struct *curr_td, *next_td; |
| 166 | int j; |
| 167 | |
| 168 | udc = (struct fsl_udc *)ep->udc; |
| 169 | /* Removed the req from fsl_ep->queue */ |
| 170 | list_del_init(&req->queue); |
| 171 | |
| 172 | /* req.status should be set as -EINPROGRESS in ep_queue() */ |
| 173 | if (req->req.status == -EINPROGRESS) |
| 174 | req->req.status = status; |
| 175 | else |
| 176 | status = req->req.status; |
| 177 | |
| 178 | /* Free dtd for the request */ |
| 179 | next_td = req->head; |
| 180 | for (j = 0; j < req->dtd_count; j++) { |
| 181 | curr_td = next_td; |
| 182 | if (j != req->dtd_count - 1) { |
| 183 | next_td = curr_td->next_td_virt; |
| 184 | } |
| 185 | dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma); |
| 186 | } |
| 187 | |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 188 | usb_gadget_unmap_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 189 | |
| 190 | if (status && (status != -ESHUTDOWN)) |
| 191 | VDBG("complete %s req %p stat %d len %u/%u", |
| 192 | ep->ep.name, &req->req, status, |
| 193 | req->req.actual, req->req.length); |
| 194 | |
| 195 | ep->stopped = 1; |
| 196 | |
| 197 | spin_unlock(&ep->udc->lock); |
| 198 | /* complete() is from gadget layer, |
| 199 | * eg fsg->bulk_in_complete() */ |
| 200 | if (req->req.complete) |
| 201 | req->req.complete(&ep->ep, &req->req); |
| 202 | |
| 203 | spin_lock(&ep->udc->lock); |
| 204 | ep->stopped = stopped; |
| 205 | } |
| 206 | |
| 207 | /*----------------------------------------------------------------- |
| 208 | * nuke(): delete all requests related to this ep |
| 209 | * called with spinlock held |
| 210 | *--------------------------------------------------------------*/ |
| 211 | static void nuke(struct fsl_ep *ep, int status) |
| 212 | { |
| 213 | ep->stopped = 1; |
| 214 | |
| 215 | /* Flush fifo */ |
| 216 | fsl_ep_fifo_flush(&ep->ep); |
| 217 | |
| 218 | /* Whether this eq has request linked */ |
| 219 | while (!list_empty(&ep->queue)) { |
| 220 | struct fsl_req *req = NULL; |
| 221 | |
| 222 | req = list_entry(ep->queue.next, struct fsl_req, queue); |
| 223 | done(ep, req, status); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | /*------------------------------------------------------------------ |
| 228 | Internal Hardware related function |
| 229 | ------------------------------------------------------------------*/ |
| 230 | |
| 231 | static int dr_controller_setup(struct fsl_udc *udc) |
| 232 | { |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 233 | unsigned int tmp, portctrl, ep_num; |
| 234 | unsigned int max_no_of_ep; |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 235 | unsigned int ctrl; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 236 | unsigned long timeout; |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 237 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 238 | #define FSL_UDC_RESET_TIMEOUT 1000 |
| 239 | |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 240 | /* Config PHY interface */ |
| 241 | portctrl = fsl_readl(&dr_regs->portsc1); |
| 242 | portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); |
| 243 | switch (udc->phy_mode) { |
| 244 | case FSL_USB2_PHY_ULPI: |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 245 | if (udc->pdata->have_sysif_regs) { |
| 246 | if (udc->pdata->controller_ver) { |
| 247 | /* controller version 1.6 or above */ |
| 248 | ctrl = __raw_readl(&usb_sys_regs->control); |
| 249 | ctrl &= ~USB_CTRL_UTMI_PHY_EN; |
| 250 | ctrl |= USB_CTRL_USB_EN; |
| 251 | __raw_writel(ctrl, &usb_sys_regs->control); |
| 252 | } |
| 253 | } |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 254 | portctrl |= PORTSCX_PTS_ULPI; |
| 255 | break; |
| 256 | case FSL_USB2_PHY_UTMI_WIDE: |
| 257 | portctrl |= PORTSCX_PTW_16BIT; |
| 258 | /* fall through */ |
| 259 | case FSL_USB2_PHY_UTMI: |
Ramneek Mehresh | 58c559e | 2012-03-20 10:35:50 +0530 | [diff] [blame] | 260 | if (udc->pdata->have_sysif_regs) { |
| 261 | if (udc->pdata->controller_ver) { |
| 262 | /* controller version 1.6 or above */ |
| 263 | ctrl = __raw_readl(&usb_sys_regs->control); |
| 264 | ctrl |= (USB_CTRL_UTMI_PHY_EN | |
| 265 | USB_CTRL_USB_EN); |
| 266 | __raw_writel(ctrl, &usb_sys_regs->control); |
| 267 | mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI |
| 268 | PHY CLK to become stable - 10ms*/ |
| 269 | } |
| 270 | } |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 271 | portctrl |= PORTSCX_PTS_UTMI; |
| 272 | break; |
| 273 | case FSL_USB2_PHY_SERIAL: |
| 274 | portctrl |= PORTSCX_PTS_FSLS; |
| 275 | break; |
| 276 | default: |
| 277 | return -EINVAL; |
| 278 | } |
| 279 | fsl_writel(portctrl, &dr_regs->portsc1); |
| 280 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 281 | /* Stop and reset the usb controller */ |
| 282 | tmp = fsl_readl(&dr_regs->usbcmd); |
| 283 | tmp &= ~USB_CMD_RUN_STOP; |
| 284 | fsl_writel(tmp, &dr_regs->usbcmd); |
| 285 | |
| 286 | tmp = fsl_readl(&dr_regs->usbcmd); |
| 287 | tmp |= USB_CMD_CTRL_RESET; |
| 288 | fsl_writel(tmp, &dr_regs->usbcmd); |
| 289 | |
| 290 | /* Wait for reset to complete */ |
| 291 | timeout = jiffies + FSL_UDC_RESET_TIMEOUT; |
| 292 | while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) { |
| 293 | if (time_after(jiffies, timeout)) { |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 294 | ERR("udc reset timeout!\n"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 295 | return -ETIMEDOUT; |
| 296 | } |
| 297 | cpu_relax(); |
| 298 | } |
| 299 | |
| 300 | /* Set the controller as device mode */ |
| 301 | tmp = fsl_readl(&dr_regs->usbmode); |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 302 | tmp &= ~USB_MODE_CTRL_MODE_MASK; /* clear mode bits */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 303 | tmp |= USB_MODE_CTRL_MODE_DEVICE; |
| 304 | /* Disable Setup Lockout */ |
| 305 | tmp |= USB_MODE_SETUP_LOCK_OFF; |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 306 | if (udc->pdata->es) |
| 307 | tmp |= USB_MODE_ES; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 308 | fsl_writel(tmp, &dr_regs->usbmode); |
| 309 | |
| 310 | /* Clear the setup status */ |
| 311 | fsl_writel(0, &dr_regs->usbsts); |
| 312 | |
| 313 | tmp = udc->ep_qh_dma; |
| 314 | tmp &= USB_EP_LIST_ADDRESS_MASK; |
| 315 | fsl_writel(tmp, &dr_regs->endpointlistaddr); |
| 316 | |
| 317 | VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x", |
Peter Korsgaard | 6ef65a7 | 2008-09-08 10:08:59 +0200 | [diff] [blame] | 318 | udc->ep_qh, (int)tmp, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 319 | fsl_readl(&dr_regs->endpointlistaddr)); |
| 320 | |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 321 | max_no_of_ep = (0x0000001F & fsl_readl(&dr_regs->dccparams)); |
| 322 | for (ep_num = 1; ep_num < max_no_of_ep; ep_num++) { |
| 323 | tmp = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 324 | tmp &= ~(EPCTRL_TX_TYPE | EPCTRL_RX_TYPE); |
| 325 | tmp |= (EPCTRL_EP_TYPE_BULK << EPCTRL_TX_EP_TYPE_SHIFT) |
| 326 | | (EPCTRL_EP_TYPE_BULK << EPCTRL_RX_EP_TYPE_SHIFT); |
| 327 | fsl_writel(tmp, &dr_regs->endptctrl[ep_num]); |
| 328 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 329 | /* Config control enable i/o output, cpu endian register */ |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 330 | #ifndef CONFIG_ARCH_MXC |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 331 | if (udc->pdata->have_sysif_regs) { |
| 332 | ctrl = __raw_readl(&usb_sys_regs->control); |
| 333 | ctrl |= USB_CTRL_IOENB; |
| 334 | __raw_writel(ctrl, &usb_sys_regs->control); |
| 335 | } |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 336 | #endif |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 337 | |
| 338 | #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) |
| 339 | /* Turn on cache snooping hardware, since some PowerPC platforms |
| 340 | * wholly rely on hardware to deal with cache coherent. */ |
| 341 | |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 342 | if (udc->pdata->have_sysif_regs) { |
| 343 | /* Setup Snooping for all the 4GB space */ |
| 344 | tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */ |
| 345 | __raw_writel(tmp, &usb_sys_regs->snoop1); |
| 346 | tmp |= 0x80000000; /* starts from 0x8000000, size 2G */ |
| 347 | __raw_writel(tmp, &usb_sys_regs->snoop2); |
| 348 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 349 | #endif |
| 350 | |
| 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | /* Enable DR irq and set controller to run state */ |
| 355 | static void dr_controller_run(struct fsl_udc *udc) |
| 356 | { |
| 357 | u32 temp; |
| 358 | |
| 359 | /* Enable DR irq reg */ |
| 360 | temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN |
| 361 | | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN |
| 362 | | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN; |
| 363 | |
| 364 | fsl_writel(temp, &dr_regs->usbintr); |
| 365 | |
| 366 | /* Clear stopped bit */ |
| 367 | udc->stopped = 0; |
| 368 | |
| 369 | /* Set the controller as device mode */ |
| 370 | temp = fsl_readl(&dr_regs->usbmode); |
| 371 | temp |= USB_MODE_CTRL_MODE_DEVICE; |
| 372 | fsl_writel(temp, &dr_regs->usbmode); |
| 373 | |
| 374 | /* Set controller to Run */ |
| 375 | temp = fsl_readl(&dr_regs->usbcmd); |
| 376 | temp |= USB_CMD_RUN_STOP; |
| 377 | fsl_writel(temp, &dr_regs->usbcmd); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | static void dr_controller_stop(struct fsl_udc *udc) |
| 381 | { |
| 382 | unsigned int tmp; |
| 383 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 384 | pr_debug("%s\n", __func__); |
| 385 | |
| 386 | /* if we're in OTG mode, and the Host is currently using the port, |
| 387 | * stop now and don't rip the controller out from under the |
| 388 | * ehci driver |
| 389 | */ |
| 390 | if (udc->gadget.is_otg) { |
| 391 | if (!(fsl_readl(&dr_regs->otgsc) & OTGSC_STS_USB_ID)) { |
| 392 | pr_debug("udc: Leaving early\n"); |
| 393 | return; |
| 394 | } |
| 395 | } |
| 396 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 397 | /* disable all INTR */ |
| 398 | fsl_writel(0, &dr_regs->usbintr); |
| 399 | |
| 400 | /* Set stopped bit for isr */ |
| 401 | udc->stopped = 1; |
| 402 | |
| 403 | /* disable IO output */ |
| 404 | /* usb_sys_regs->control = 0; */ |
| 405 | |
| 406 | /* set controller to Stop */ |
| 407 | tmp = fsl_readl(&dr_regs->usbcmd); |
| 408 | tmp &= ~USB_CMD_RUN_STOP; |
| 409 | fsl_writel(tmp, &dr_regs->usbcmd); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 410 | } |
| 411 | |
Will Newton | 9c94155 | 2008-08-12 15:39:07 +0100 | [diff] [blame] | 412 | static void dr_ep_setup(unsigned char ep_num, unsigned char dir, |
| 413 | unsigned char ep_type) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 414 | { |
| 415 | unsigned int tmp_epctrl = 0; |
| 416 | |
| 417 | tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 418 | if (dir) { |
| 419 | if (ep_num) |
| 420 | tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST; |
| 421 | tmp_epctrl |= EPCTRL_TX_ENABLE; |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 422 | tmp_epctrl &= ~EPCTRL_TX_TYPE; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 423 | tmp_epctrl |= ((unsigned int)(ep_type) |
| 424 | << EPCTRL_TX_EP_TYPE_SHIFT); |
| 425 | } else { |
| 426 | if (ep_num) |
| 427 | tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST; |
| 428 | tmp_epctrl |= EPCTRL_RX_ENABLE; |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 429 | tmp_epctrl &= ~EPCTRL_RX_TYPE; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 430 | tmp_epctrl |= ((unsigned int)(ep_type) |
| 431 | << EPCTRL_RX_EP_TYPE_SHIFT); |
| 432 | } |
| 433 | |
| 434 | fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]); |
| 435 | } |
| 436 | |
| 437 | static void |
| 438 | dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value) |
| 439 | { |
| 440 | u32 tmp_epctrl = 0; |
| 441 | |
| 442 | tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 443 | |
| 444 | if (value) { |
| 445 | /* set the stall bit */ |
| 446 | if (dir) |
| 447 | tmp_epctrl |= EPCTRL_TX_EP_STALL; |
| 448 | else |
| 449 | tmp_epctrl |= EPCTRL_RX_EP_STALL; |
| 450 | } else { |
| 451 | /* clear the stall bit and reset data toggle */ |
| 452 | if (dir) { |
| 453 | tmp_epctrl &= ~EPCTRL_TX_EP_STALL; |
| 454 | tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST; |
| 455 | } else { |
| 456 | tmp_epctrl &= ~EPCTRL_RX_EP_STALL; |
| 457 | tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST; |
| 458 | } |
| 459 | } |
| 460 | fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]); |
| 461 | } |
| 462 | |
| 463 | /* Get stall status of a specific ep |
| 464 | Return: 0: not stalled; 1:stalled */ |
| 465 | static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir) |
| 466 | { |
| 467 | u32 epctrl; |
| 468 | |
| 469 | epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 470 | if (dir) |
| 471 | return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0; |
| 472 | else |
| 473 | return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0; |
| 474 | } |
| 475 | |
| 476 | /******************************************************************** |
| 477 | Internal Structure Build up functions |
| 478 | ********************************************************************/ |
| 479 | |
| 480 | /*------------------------------------------------------------------ |
| 481 | * struct_ep_qh_setup(): set the Endpoint Capabilites field of QH |
| 482 | * @zlt: Zero Length Termination Select (1: disable; 0: enable) |
| 483 | * @mult: Mult field |
| 484 | ------------------------------------------------------------------*/ |
| 485 | static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num, |
| 486 | unsigned char dir, unsigned char ep_type, |
| 487 | unsigned int max_pkt_len, |
| 488 | unsigned int zlt, unsigned char mult) |
| 489 | { |
| 490 | struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir]; |
| 491 | unsigned int tmp = 0; |
| 492 | |
| 493 | /* set the Endpoint Capabilites in QH */ |
| 494 | switch (ep_type) { |
| 495 | case USB_ENDPOINT_XFER_CONTROL: |
| 496 | /* Interrupt On Setup (IOS). for control ep */ |
| 497 | tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS) |
| 498 | | EP_QUEUE_HEAD_IOS; |
| 499 | break; |
| 500 | case USB_ENDPOINT_XFER_ISOC: |
| 501 | tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS) |
| 502 | | (mult << EP_QUEUE_HEAD_MULT_POS); |
| 503 | break; |
| 504 | case USB_ENDPOINT_XFER_BULK: |
| 505 | case USB_ENDPOINT_XFER_INT: |
| 506 | tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS; |
| 507 | break; |
| 508 | default: |
| 509 | VDBG("error ep type is %d", ep_type); |
| 510 | return; |
| 511 | } |
| 512 | if (zlt) |
| 513 | tmp |= EP_QUEUE_HEAD_ZLT_SEL; |
Li Yang | 9a6e184 | 2009-02-13 16:14:39 +0800 | [diff] [blame] | 514 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 515 | p_QH->max_pkt_length = cpu_to_hc32(tmp); |
Li Yang | 9a6e184 | 2009-02-13 16:14:39 +0800 | [diff] [blame] | 516 | p_QH->next_dtd_ptr = 1; |
| 517 | p_QH->size_ioc_int_sts = 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | /* Setup qh structure and ep register for ep0. */ |
| 521 | static void ep0_setup(struct fsl_udc *udc) |
| 522 | { |
| 523 | /* the intialization of an ep includes: fields in QH, Regs, |
| 524 | * fsl_ep struct */ |
| 525 | struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL, |
| 526 | USB_MAX_CTRL_PAYLOAD, 0, 0); |
| 527 | struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL, |
| 528 | USB_MAX_CTRL_PAYLOAD, 0, 0); |
| 529 | dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL); |
| 530 | dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL); |
| 531 | |
| 532 | return; |
| 533 | |
| 534 | } |
| 535 | |
| 536 | /*********************************************************************** |
| 537 | Endpoint Management Functions |
| 538 | ***********************************************************************/ |
| 539 | |
| 540 | /*------------------------------------------------------------------------- |
| 541 | * when configurations are set, or when interface settings change |
| 542 | * for example the do_set_interface() in gadget layer, |
| 543 | * the driver will enable or disable the relevant endpoints |
| 544 | * ep0 doesn't use this routine. It is always enabled. |
| 545 | -------------------------------------------------------------------------*/ |
| 546 | static int fsl_ep_enable(struct usb_ep *_ep, |
| 547 | const struct usb_endpoint_descriptor *desc) |
| 548 | { |
| 549 | struct fsl_udc *udc = NULL; |
| 550 | struct fsl_ep *ep = NULL; |
| 551 | unsigned short max = 0; |
| 552 | unsigned char mult = 0, zlt; |
| 553 | int retval = -EINVAL; |
| 554 | unsigned long flags = 0; |
| 555 | |
| 556 | ep = container_of(_ep, struct fsl_ep, ep); |
| 557 | |
| 558 | /* catch various bogus parameters */ |
Ido Shayevitz | 1fa7597 | 2012-06-04 13:35:21 +0300 | [diff] [blame] | 559 | if (!_ep || !desc |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 560 | || (desc->bDescriptorType != USB_DT_ENDPOINT)) |
| 561 | return -EINVAL; |
| 562 | |
| 563 | udc = ep->udc; |
| 564 | |
| 565 | if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN)) |
| 566 | return -ESHUTDOWN; |
| 567 | |
Kuninori Morimoto | 29cc889 | 2011-08-23 03:12:03 -0700 | [diff] [blame] | 568 | max = usb_endpoint_maxp(desc); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 569 | |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 570 | /* Disable automatic zlp generation. Driver is responsible to indicate |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 571 | * explicitly through req->req.zero. This is needed to enable multi-td |
| 572 | * request. */ |
| 573 | zlt = 1; |
| 574 | |
| 575 | /* Assume the max packet size from gadget is always correct */ |
| 576 | switch (desc->bmAttributes & 0x03) { |
| 577 | case USB_ENDPOINT_XFER_CONTROL: |
| 578 | case USB_ENDPOINT_XFER_BULK: |
| 579 | case USB_ENDPOINT_XFER_INT: |
| 580 | /* mult = 0. Execute N Transactions as demonstrated by |
| 581 | * the USB variable length packet protocol where N is |
| 582 | * computed using the Maximum Packet Length (dQH) and |
| 583 | * the Total Bytes field (dTD) */ |
| 584 | mult = 0; |
| 585 | break; |
| 586 | case USB_ENDPOINT_XFER_ISOC: |
| 587 | /* Calculate transactions needed for high bandwidth iso */ |
| 588 | mult = (unsigned char)(1 + ((max >> 11) & 0x03)); |
Dinh Nguyen | 88e3b59 | 2010-05-04 10:03:01 -0500 | [diff] [blame] | 589 | max = max & 0x7ff; /* bit 0~10 */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 590 | /* 3 transactions at most */ |
| 591 | if (mult > 3) |
| 592 | goto en_done; |
| 593 | break; |
| 594 | default: |
| 595 | goto en_done; |
| 596 | } |
| 597 | |
| 598 | spin_lock_irqsave(&udc->lock, flags); |
| 599 | ep->ep.maxpacket = max; |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 600 | ep->ep.desc = desc; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 601 | ep->stopped = 0; |
| 602 | |
| 603 | /* Controller related setup */ |
| 604 | /* Init EPx Queue Head (Ep Capabilites field in QH |
| 605 | * according to max, zlt, mult) */ |
| 606 | struct_ep_qh_setup(udc, (unsigned char) ep_index(ep), |
| 607 | (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN) |
| 608 | ? USB_SEND : USB_RECV), |
| 609 | (unsigned char) (desc->bmAttributes |
| 610 | & USB_ENDPOINT_XFERTYPE_MASK), |
| 611 | max, zlt, mult); |
| 612 | |
| 613 | /* Init endpoint ctrl register */ |
| 614 | dr_ep_setup((unsigned char) ep_index(ep), |
| 615 | (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN) |
| 616 | ? USB_SEND : USB_RECV), |
| 617 | (unsigned char) (desc->bmAttributes |
| 618 | & USB_ENDPOINT_XFERTYPE_MASK)); |
| 619 | |
| 620 | spin_unlock_irqrestore(&udc->lock, flags); |
| 621 | retval = 0; |
| 622 | |
| 623 | VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name, |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 624 | ep->ep.desc->bEndpointAddress & 0x0f, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 625 | (desc->bEndpointAddress & USB_DIR_IN) |
| 626 | ? "in" : "out", max); |
| 627 | en_done: |
| 628 | return retval; |
| 629 | } |
| 630 | |
| 631 | /*--------------------------------------------------------------------- |
| 632 | * @ep : the ep being unconfigured. May not be ep0 |
| 633 | * Any pending and uncomplete req will complete with status (-ESHUTDOWN) |
| 634 | *---------------------------------------------------------------------*/ |
| 635 | static int fsl_ep_disable(struct usb_ep *_ep) |
| 636 | { |
| 637 | struct fsl_udc *udc = NULL; |
| 638 | struct fsl_ep *ep = NULL; |
| 639 | unsigned long flags = 0; |
| 640 | u32 epctrl; |
| 641 | int ep_num; |
| 642 | |
| 643 | ep = container_of(_ep, struct fsl_ep, ep); |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 644 | if (!_ep || !ep->ep.desc) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 645 | VDBG("%s not enabled", _ep ? ep->ep.name : NULL); |
| 646 | return -EINVAL; |
| 647 | } |
| 648 | |
| 649 | /* disable ep on controller */ |
| 650 | ep_num = ep_index(ep); |
| 651 | epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
Ramneek Mehresh | ea437f3 | 2011-05-04 19:41:55 +0530 | [diff] [blame] | 652 | if (ep_is_in(ep)) { |
| 653 | epctrl &= ~(EPCTRL_TX_ENABLE | EPCTRL_TX_TYPE); |
| 654 | epctrl |= EPCTRL_EP_TYPE_BULK << EPCTRL_TX_EP_TYPE_SHIFT; |
| 655 | } else { |
| 656 | epctrl &= ~(EPCTRL_RX_ENABLE | EPCTRL_TX_TYPE); |
| 657 | epctrl |= EPCTRL_EP_TYPE_BULK << EPCTRL_RX_EP_TYPE_SHIFT; |
| 658 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 659 | fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]); |
| 660 | |
| 661 | udc = (struct fsl_udc *)ep->udc; |
| 662 | spin_lock_irqsave(&udc->lock, flags); |
| 663 | |
| 664 | /* nuke all pending requests (does flush) */ |
| 665 | nuke(ep, -ESHUTDOWN); |
| 666 | |
Ido Shayevitz | f9c56cd | 2012-02-08 13:56:48 +0200 | [diff] [blame] | 667 | ep->ep.desc = NULL; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 668 | ep->stopped = 1; |
| 669 | spin_unlock_irqrestore(&udc->lock, flags); |
| 670 | |
| 671 | VDBG("disabled %s OK", _ep->name); |
| 672 | return 0; |
| 673 | } |
| 674 | |
| 675 | /*--------------------------------------------------------------------- |
| 676 | * allocate a request object used by this endpoint |
| 677 | * the main operation is to insert the req->queue to the eq->queue |
| 678 | * Returns the request, or null if one could not be allocated |
| 679 | *---------------------------------------------------------------------*/ |
| 680 | static struct usb_request * |
| 681 | fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags) |
| 682 | { |
| 683 | struct fsl_req *req = NULL; |
| 684 | |
| 685 | req = kzalloc(sizeof *req, gfp_flags); |
| 686 | if (!req) |
| 687 | return NULL; |
| 688 | |
| 689 | req->req.dma = DMA_ADDR_INVALID; |
| 690 | INIT_LIST_HEAD(&req->queue); |
| 691 | |
| 692 | return &req->req; |
| 693 | } |
| 694 | |
| 695 | static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req) |
| 696 | { |
| 697 | struct fsl_req *req = NULL; |
| 698 | |
| 699 | req = container_of(_req, struct fsl_req, req); |
| 700 | |
| 701 | if (_req) |
| 702 | kfree(req); |
| 703 | } |
| 704 | |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 705 | /* Actually add a dTD chain to an empty dQH and let go */ |
| 706 | static void fsl_prime_ep(struct fsl_ep *ep, struct ep_td_struct *td) |
| 707 | { |
| 708 | struct ep_queue_head *qh = get_qh_by_ep(ep); |
| 709 | |
| 710 | /* Write dQH next pointer and terminate bit to 0 */ |
| 711 | qh->next_dtd_ptr = cpu_to_hc32(td->td_dma |
| 712 | & EP_QUEUE_HEAD_NEXT_POINTER_MASK); |
| 713 | |
| 714 | /* Clear active and halt bit */ |
| 715 | qh->size_ioc_int_sts &= cpu_to_hc32(~(EP_QUEUE_HEAD_STATUS_ACTIVE |
| 716 | | EP_QUEUE_HEAD_STATUS_HALT)); |
| 717 | |
| 718 | /* Ensure that updates to the QH will occur before priming. */ |
| 719 | wmb(); |
| 720 | |
| 721 | /* Prime endpoint by writing correct bit to ENDPTPRIME */ |
| 722 | fsl_writel(ep_is_in(ep) ? (1 << (ep_index(ep) + 16)) |
| 723 | : (1 << (ep_index(ep))), &dr_regs->endpointprime); |
| 724 | } |
| 725 | |
| 726 | /* Add dTD chain to the dQH of an EP */ |
Will Newton | 224b503 | 2008-08-12 15:39:15 +0100 | [diff] [blame] | 727 | static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 728 | { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 729 | u32 temp, bitmask, tmp_stat; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 730 | |
| 731 | /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr); |
| 732 | VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */ |
| 733 | |
| 734 | bitmask = ep_is_in(ep) |
| 735 | ? (1 << (ep_index(ep) + 16)) |
| 736 | : (1 << (ep_index(ep))); |
| 737 | |
| 738 | /* check if the pipe is empty */ |
Peter Chen | f79a60b | 2012-02-29 20:19:46 +0800 | [diff] [blame] | 739 | if (!(list_empty(&ep->queue)) && !(ep_index(ep) == 0)) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 740 | /* Add td to the end */ |
| 741 | struct fsl_req *lastreq; |
| 742 | lastreq = list_entry(ep->queue.prev, struct fsl_req, queue); |
| 743 | lastreq->tail->next_td_ptr = |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 744 | cpu_to_hc32(req->head->td_dma & DTD_ADDR_MASK); |
Peter Chen | 4d0947d | 2012-04-01 15:17:16 +0800 | [diff] [blame] | 745 | /* Ensure dTD's next dtd pointer to be updated */ |
| 746 | wmb(); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 747 | /* Read prime bit, if 1 goto done */ |
| 748 | if (fsl_readl(&dr_regs->endpointprime) & bitmask) |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 749 | return; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 750 | |
| 751 | do { |
| 752 | /* Set ATDTW bit in USBCMD */ |
| 753 | temp = fsl_readl(&dr_regs->usbcmd); |
| 754 | fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd); |
| 755 | |
| 756 | /* Read correct status bit */ |
| 757 | tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask; |
| 758 | |
| 759 | } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW)); |
| 760 | |
| 761 | /* Write ATDTW bit to 0 */ |
| 762 | temp = fsl_readl(&dr_regs->usbcmd); |
| 763 | fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd); |
| 764 | |
| 765 | if (tmp_stat) |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 766 | return; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 767 | } |
| 768 | |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 769 | fsl_prime_ep(ep, req->head); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | /* Fill in the dTD structure |
| 773 | * @req: request that the transfer belongs to |
| 774 | * @length: return actually data length of the dTD |
| 775 | * @dma: return dma address of the dTD |
| 776 | * @is_last: return flag if it is the last dTD of the request |
| 777 | * return: pointer to the built dTD */ |
| 778 | static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 779 | dma_addr_t *dma, int *is_last, gfp_t gfp_flags) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 780 | { |
| 781 | u32 swap_temp; |
| 782 | struct ep_td_struct *dtd; |
| 783 | |
| 784 | /* how big will this transfer be? */ |
| 785 | *length = min(req->req.length - req->req.actual, |
| 786 | (unsigned)EP_MAX_LENGTH_TRANSFER); |
| 787 | |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 788 | dtd = dma_pool_alloc(udc_controller->td_pool, gfp_flags, dma); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 789 | if (dtd == NULL) |
| 790 | return dtd; |
| 791 | |
| 792 | dtd->td_dma = *dma; |
| 793 | /* Clear reserved field */ |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 794 | swap_temp = hc32_to_cpu(dtd->size_ioc_sts); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 795 | swap_temp &= ~DTD_RESERVED_FIELDS; |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 796 | dtd->size_ioc_sts = cpu_to_hc32(swap_temp); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 797 | |
| 798 | /* Init all of buffer page pointers */ |
| 799 | swap_temp = (u32) (req->req.dma + req->req.actual); |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 800 | dtd->buff_ptr0 = cpu_to_hc32(swap_temp); |
| 801 | dtd->buff_ptr1 = cpu_to_hc32(swap_temp + 0x1000); |
| 802 | dtd->buff_ptr2 = cpu_to_hc32(swap_temp + 0x2000); |
| 803 | dtd->buff_ptr3 = cpu_to_hc32(swap_temp + 0x3000); |
| 804 | dtd->buff_ptr4 = cpu_to_hc32(swap_temp + 0x4000); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 805 | |
| 806 | req->req.actual += *length; |
| 807 | |
| 808 | /* zlp is needed if req->req.zero is set */ |
| 809 | if (req->req.zero) { |
| 810 | if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0) |
| 811 | *is_last = 1; |
| 812 | else |
| 813 | *is_last = 0; |
| 814 | } else if (req->req.length == req->req.actual) |
| 815 | *is_last = 1; |
| 816 | else |
| 817 | *is_last = 0; |
| 818 | |
| 819 | if ((*is_last) == 0) |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 820 | VDBG("multi-dtd request!"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 821 | /* Fill in the transfer size; set active bit */ |
| 822 | swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE); |
| 823 | |
| 824 | /* Enable interrupt for the last dtd of a request */ |
| 825 | if (*is_last && !req->req.no_interrupt) |
| 826 | swap_temp |= DTD_IOC; |
| 827 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 828 | dtd->size_ioc_sts = cpu_to_hc32(swap_temp); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 829 | |
| 830 | mb(); |
| 831 | |
| 832 | VDBG("length = %d address= 0x%x", *length, (int)*dma); |
| 833 | |
| 834 | return dtd; |
| 835 | } |
| 836 | |
| 837 | /* Generate dtd chain for a request */ |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 838 | static int fsl_req_to_dtd(struct fsl_req *req, gfp_t gfp_flags) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 839 | { |
| 840 | unsigned count; |
| 841 | int is_last; |
| 842 | int is_first =1; |
| 843 | struct ep_td_struct *last_dtd = NULL, *dtd; |
| 844 | dma_addr_t dma; |
| 845 | |
| 846 | do { |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 847 | dtd = fsl_build_dtd(req, &count, &dma, &is_last, gfp_flags); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 848 | if (dtd == NULL) |
| 849 | return -ENOMEM; |
| 850 | |
| 851 | if (is_first) { |
| 852 | is_first = 0; |
| 853 | req->head = dtd; |
| 854 | } else { |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 855 | last_dtd->next_td_ptr = cpu_to_hc32(dma); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 856 | last_dtd->next_td_virt = dtd; |
| 857 | } |
| 858 | last_dtd = dtd; |
| 859 | |
| 860 | req->dtd_count++; |
| 861 | } while (!is_last); |
| 862 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 863 | dtd->next_td_ptr = cpu_to_hc32(DTD_NEXT_TERMINATE); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 864 | |
| 865 | req->tail = dtd; |
| 866 | |
| 867 | return 0; |
| 868 | } |
| 869 | |
| 870 | /* queues (submits) an I/O request to an endpoint */ |
| 871 | static int |
| 872 | fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) |
| 873 | { |
| 874 | struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep); |
| 875 | struct fsl_req *req = container_of(_req, struct fsl_req, req); |
| 876 | struct fsl_udc *udc; |
| 877 | unsigned long flags; |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 878 | int ret; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 879 | |
| 880 | /* catch various bogus parameters */ |
| 881 | if (!_req || !req->req.complete || !req->req.buf |
| 882 | || !list_empty(&req->queue)) { |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 883 | VDBG("%s, bad params", __func__); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 884 | return -EINVAL; |
| 885 | } |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 886 | if (unlikely(!_ep || !ep->ep.desc)) { |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 887 | VDBG("%s, bad ep", __func__); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 888 | return -EINVAL; |
| 889 | } |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 890 | if (usb_endpoint_xfer_isoc(ep->ep.desc)) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 891 | if (req->req.length > ep->ep.maxpacket) |
| 892 | return -EMSGSIZE; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 893 | } |
| 894 | |
| 895 | udc = ep->udc; |
| 896 | if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) |
| 897 | return -ESHUTDOWN; |
| 898 | |
| 899 | req->ep = ep; |
| 900 | |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 901 | ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); |
| 902 | if (ret) |
| 903 | return ret; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 904 | |
| 905 | req->req.status = -EINPROGRESS; |
| 906 | req->req.actual = 0; |
| 907 | req->dtd_count = 0; |
| 908 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 909 | /* build dtds and push them to device queue */ |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 910 | if (!fsl_req_to_dtd(req, gfp_flags)) { |
| 911 | spin_lock_irqsave(&udc->lock, flags); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 912 | fsl_queue_td(ep, req); |
| 913 | } else { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 914 | return -ENOMEM; |
| 915 | } |
| 916 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 917 | /* irq handler advances the queue */ |
| 918 | if (req != NULL) |
| 919 | list_add_tail(&req->queue, &ep->queue); |
| 920 | spin_unlock_irqrestore(&udc->lock, flags); |
| 921 | |
| 922 | return 0; |
| 923 | } |
| 924 | |
| 925 | /* dequeues (cancels, unlinks) an I/O request from an endpoint */ |
| 926 | static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) |
| 927 | { |
| 928 | struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep); |
| 929 | struct fsl_req *req; |
| 930 | unsigned long flags; |
| 931 | int ep_num, stopped, ret = 0; |
| 932 | u32 epctrl; |
| 933 | |
| 934 | if (!_ep || !_req) |
| 935 | return -EINVAL; |
| 936 | |
| 937 | spin_lock_irqsave(&ep->udc->lock, flags); |
| 938 | stopped = ep->stopped; |
| 939 | |
| 940 | /* Stop the ep before we deal with the queue */ |
| 941 | ep->stopped = 1; |
| 942 | ep_num = ep_index(ep); |
| 943 | epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 944 | if (ep_is_in(ep)) |
| 945 | epctrl &= ~EPCTRL_TX_ENABLE; |
| 946 | else |
| 947 | epctrl &= ~EPCTRL_RX_ENABLE; |
| 948 | fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]); |
| 949 | |
| 950 | /* make sure it's actually queued on this endpoint */ |
| 951 | list_for_each_entry(req, &ep->queue, queue) { |
| 952 | if (&req->req == _req) |
| 953 | break; |
| 954 | } |
| 955 | if (&req->req != _req) { |
| 956 | ret = -EINVAL; |
| 957 | goto out; |
| 958 | } |
| 959 | |
| 960 | /* The request is in progress, or completed but not dequeued */ |
| 961 | if (ep->queue.next == &req->queue) { |
| 962 | _req->status = -ECONNRESET; |
| 963 | fsl_ep_fifo_flush(_ep); /* flush current transfer */ |
| 964 | |
| 965 | /* The request isn't the last request in this ep queue */ |
| 966 | if (req->queue.next != &ep->queue) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 967 | struct fsl_req *next_req; |
| 968 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 969 | next_req = list_entry(req->queue.next, struct fsl_req, |
| 970 | queue); |
| 971 | |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 972 | /* prime with dTD of next request */ |
| 973 | fsl_prime_ep(ep, next_req->head); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 974 | } |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 975 | /* The request hasn't been processed, patch up the TD chain */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 976 | } else { |
| 977 | struct fsl_req *prev_req; |
| 978 | |
| 979 | prev_req = list_entry(req->queue.prev, struct fsl_req, queue); |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 980 | prev_req->tail->next_td_ptr = req->tail->next_td_ptr; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | done(ep, req, -ECONNRESET); |
| 984 | |
| 985 | /* Enable EP */ |
| 986 | out: epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); |
| 987 | if (ep_is_in(ep)) |
| 988 | epctrl |= EPCTRL_TX_ENABLE; |
| 989 | else |
| 990 | epctrl |= EPCTRL_RX_ENABLE; |
| 991 | fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]); |
| 992 | ep->stopped = stopped; |
| 993 | |
| 994 | spin_unlock_irqrestore(&ep->udc->lock, flags); |
| 995 | return ret; |
| 996 | } |
| 997 | |
| 998 | /*-------------------------------------------------------------------------*/ |
| 999 | |
| 1000 | /*----------------------------------------------------------------- |
| 1001 | * modify the endpoint halt feature |
| 1002 | * @ep: the non-isochronous endpoint being stalled |
| 1003 | * @value: 1--set halt 0--clear halt |
| 1004 | * Returns zero, or a negative error code. |
| 1005 | *----------------------------------------------------------------*/ |
| 1006 | static int fsl_ep_set_halt(struct usb_ep *_ep, int value) |
| 1007 | { |
| 1008 | struct fsl_ep *ep = NULL; |
| 1009 | unsigned long flags = 0; |
| 1010 | int status = -EOPNOTSUPP; /* operation not supported */ |
| 1011 | unsigned char ep_dir = 0, ep_num = 0; |
| 1012 | struct fsl_udc *udc = NULL; |
| 1013 | |
| 1014 | ep = container_of(_ep, struct fsl_ep, ep); |
| 1015 | udc = ep->udc; |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 1016 | if (!_ep || !ep->ep.desc) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1017 | status = -EINVAL; |
| 1018 | goto out; |
| 1019 | } |
| 1020 | |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 1021 | if (usb_endpoint_xfer_isoc(ep->ep.desc)) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1022 | status = -EOPNOTSUPP; |
| 1023 | goto out; |
| 1024 | } |
| 1025 | |
| 1026 | /* Attempt to halt IN ep will fail if any transfer requests |
| 1027 | * are still queue */ |
| 1028 | if (value && ep_is_in(ep) && !list_empty(&ep->queue)) { |
| 1029 | status = -EAGAIN; |
| 1030 | goto out; |
| 1031 | } |
| 1032 | |
| 1033 | status = 0; |
| 1034 | ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV; |
| 1035 | ep_num = (unsigned char)(ep_index(ep)); |
| 1036 | spin_lock_irqsave(&ep->udc->lock, flags); |
| 1037 | dr_ep_change_stall(ep_num, ep_dir, value); |
| 1038 | spin_unlock_irqrestore(&ep->udc->lock, flags); |
| 1039 | |
| 1040 | if (ep_index(ep) == 0) { |
| 1041 | udc->ep0_state = WAIT_FOR_SETUP; |
| 1042 | udc->ep0_dir = 0; |
| 1043 | } |
| 1044 | out: |
| 1045 | VDBG(" %s %s halt stat %d", ep->ep.name, |
| 1046 | value ? "set" : "clear", status); |
| 1047 | |
| 1048 | return status; |
| 1049 | } |
| 1050 | |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1051 | static int fsl_ep_fifo_status(struct usb_ep *_ep) |
| 1052 | { |
| 1053 | struct fsl_ep *ep; |
| 1054 | struct fsl_udc *udc; |
| 1055 | int size = 0; |
| 1056 | u32 bitmask; |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 1057 | struct ep_queue_head *qh; |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1058 | |
| 1059 | ep = container_of(_ep, struct fsl_ep, ep); |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 1060 | if (!_ep || (!ep->ep.desc && ep_index(ep) != 0)) |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1061 | return -ENODEV; |
| 1062 | |
| 1063 | udc = (struct fsl_udc *)ep->udc; |
| 1064 | |
| 1065 | if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) |
| 1066 | return -ESHUTDOWN; |
| 1067 | |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 1068 | qh = get_qh_by_ep(ep); |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1069 | |
| 1070 | bitmask = (ep_is_in(ep)) ? (1 << (ep_index(ep) + 16)) : |
| 1071 | (1 << (ep_index(ep))); |
| 1072 | |
| 1073 | if (fsl_readl(&dr_regs->endptstatus) & bitmask) |
Li Yang | 6414e94 | 2011-11-23 20:12:56 +0800 | [diff] [blame] | 1074 | size = (qh->size_ioc_int_sts & DTD_PACKET_SIZE) |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1075 | >> DTD_LENGTH_BIT_POS; |
| 1076 | |
| 1077 | pr_debug("%s %u\n", __func__, size); |
| 1078 | return size; |
| 1079 | } |
| 1080 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1081 | static void fsl_ep_fifo_flush(struct usb_ep *_ep) |
| 1082 | { |
| 1083 | struct fsl_ep *ep; |
| 1084 | int ep_num, ep_dir; |
| 1085 | u32 bits; |
| 1086 | unsigned long timeout; |
| 1087 | #define FSL_UDC_FLUSH_TIMEOUT 1000 |
| 1088 | |
| 1089 | if (!_ep) { |
| 1090 | return; |
| 1091 | } else { |
| 1092 | ep = container_of(_ep, struct fsl_ep, ep); |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 1093 | if (!ep->ep.desc) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1094 | return; |
| 1095 | } |
| 1096 | ep_num = ep_index(ep); |
| 1097 | ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV; |
| 1098 | |
| 1099 | if (ep_num == 0) |
| 1100 | bits = (1 << 16) | 1; |
| 1101 | else if (ep_dir == USB_SEND) |
| 1102 | bits = 1 << (16 + ep_num); |
| 1103 | else |
| 1104 | bits = 1 << ep_num; |
| 1105 | |
| 1106 | timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT; |
| 1107 | do { |
| 1108 | fsl_writel(bits, &dr_regs->endptflush); |
| 1109 | |
| 1110 | /* Wait until flush complete */ |
| 1111 | while (fsl_readl(&dr_regs->endptflush)) { |
| 1112 | if (time_after(jiffies, timeout)) { |
| 1113 | ERR("ep flush timeout\n"); |
| 1114 | return; |
| 1115 | } |
| 1116 | cpu_relax(); |
| 1117 | } |
| 1118 | /* See if we need to flush again */ |
| 1119 | } while (fsl_readl(&dr_regs->endptstatus) & bits); |
| 1120 | } |
| 1121 | |
| 1122 | static struct usb_ep_ops fsl_ep_ops = { |
| 1123 | .enable = fsl_ep_enable, |
| 1124 | .disable = fsl_ep_disable, |
| 1125 | |
| 1126 | .alloc_request = fsl_alloc_request, |
| 1127 | .free_request = fsl_free_request, |
| 1128 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1129 | .queue = fsl_ep_queue, |
| 1130 | .dequeue = fsl_ep_dequeue, |
| 1131 | |
| 1132 | .set_halt = fsl_ep_set_halt, |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1133 | .fifo_status = fsl_ep_fifo_status, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1134 | .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */ |
| 1135 | }; |
| 1136 | |
| 1137 | /*------------------------------------------------------------------------- |
| 1138 | Gadget Driver Layer Operations |
| 1139 | -------------------------------------------------------------------------*/ |
| 1140 | |
| 1141 | /*---------------------------------------------------------------------- |
| 1142 | * Get the current frame number (from DR frame_index Reg ) |
| 1143 | *----------------------------------------------------------------------*/ |
| 1144 | static int fsl_get_frame(struct usb_gadget *gadget) |
| 1145 | { |
| 1146 | return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS); |
| 1147 | } |
| 1148 | |
| 1149 | /*----------------------------------------------------------------------- |
| 1150 | * Tries to wake up the host connected to this gadget |
| 1151 | -----------------------------------------------------------------------*/ |
| 1152 | static int fsl_wakeup(struct usb_gadget *gadget) |
| 1153 | { |
| 1154 | struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget); |
| 1155 | u32 portsc; |
| 1156 | |
| 1157 | /* Remote wakeup feature not enabled by host */ |
| 1158 | if (!udc->remote_wakeup) |
| 1159 | return -ENOTSUPP; |
| 1160 | |
| 1161 | portsc = fsl_readl(&dr_regs->portsc1); |
| 1162 | /* not suspended? */ |
| 1163 | if (!(portsc & PORTSCX_PORT_SUSPEND)) |
| 1164 | return 0; |
| 1165 | /* trigger force resume */ |
| 1166 | portsc |= PORTSCX_PORT_FORCE_RESUME; |
| 1167 | fsl_writel(portsc, &dr_regs->portsc1); |
| 1168 | return 0; |
| 1169 | } |
| 1170 | |
| 1171 | static int can_pullup(struct fsl_udc *udc) |
| 1172 | { |
| 1173 | return udc->driver && udc->softconnect && udc->vbus_active; |
| 1174 | } |
| 1175 | |
| 1176 | /* Notify controller that VBUS is powered, Called by whatever |
| 1177 | detects VBUS sessions */ |
| 1178 | static int fsl_vbus_session(struct usb_gadget *gadget, int is_active) |
| 1179 | { |
| 1180 | struct fsl_udc *udc; |
| 1181 | unsigned long flags; |
| 1182 | |
| 1183 | udc = container_of(gadget, struct fsl_udc, gadget); |
| 1184 | spin_lock_irqsave(&udc->lock, flags); |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 1185 | VDBG("VBUS %s", is_active ? "on" : "off"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1186 | udc->vbus_active = (is_active != 0); |
| 1187 | if (can_pullup(udc)) |
| 1188 | fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), |
| 1189 | &dr_regs->usbcmd); |
| 1190 | else |
| 1191 | fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP), |
| 1192 | &dr_regs->usbcmd); |
| 1193 | spin_unlock_irqrestore(&udc->lock, flags); |
| 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | /* constrain controller's VBUS power usage |
| 1198 | * This call is used by gadget drivers during SET_CONFIGURATION calls, |
| 1199 | * reporting how much power the device may consume. For example, this |
| 1200 | * could affect how quickly batteries are recharged. |
| 1201 | * |
| 1202 | * Returns zero on success, else negative errno. |
| 1203 | */ |
| 1204 | static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA) |
| 1205 | { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1206 | struct fsl_udc *udc; |
| 1207 | |
| 1208 | udc = container_of(gadget, struct fsl_udc, gadget); |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 1209 | if (!IS_ERR_OR_NULL(udc->transceiver)) |
Heikki Krogerus | b96d3b0 | 2012-02-13 13:24:18 +0200 | [diff] [blame] | 1210 | return usb_phy_set_power(udc->transceiver, mA); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1211 | return -ENOTSUPP; |
| 1212 | } |
| 1213 | |
| 1214 | /* Change Data+ pullup status |
| 1215 | * this func is used by usb_gadget_connect/disconnet |
| 1216 | */ |
| 1217 | static int fsl_pullup(struct usb_gadget *gadget, int is_on) |
| 1218 | { |
| 1219 | struct fsl_udc *udc; |
| 1220 | |
| 1221 | udc = container_of(gadget, struct fsl_udc, gadget); |
| 1222 | udc->softconnect = (is_on != 0); |
| 1223 | if (can_pullup(udc)) |
| 1224 | fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), |
| 1225 | &dr_regs->usbcmd); |
| 1226 | else |
| 1227 | fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP), |
| 1228 | &dr_regs->usbcmd); |
| 1229 | |
| 1230 | return 0; |
| 1231 | } |
| 1232 | |
Felipe Balbi | eb65796 | 2013-01-24 10:43:52 +0200 | [diff] [blame] | 1233 | static int fsl_udc_start(struct usb_gadget *g, |
| 1234 | struct usb_gadget_driver *driver); |
| 1235 | static int fsl_udc_stop(struct usb_gadget *g, |
| 1236 | struct usb_gadget_driver *driver); |
David Brownell | 9454a57 | 2007-10-04 18:05:17 -0700 | [diff] [blame] | 1237 | /* defined in gadget.h */ |
Felipe Balbi | eeef458 | 2013-01-24 17:58:16 +0200 | [diff] [blame] | 1238 | static const struct usb_gadget_ops fsl_gadget_ops = { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1239 | .get_frame = fsl_get_frame, |
| 1240 | .wakeup = fsl_wakeup, |
| 1241 | /* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */ |
| 1242 | .vbus_session = fsl_vbus_session, |
| 1243 | .vbus_draw = fsl_vbus_draw, |
| 1244 | .pullup = fsl_pullup, |
Felipe Balbi | eb65796 | 2013-01-24 10:43:52 +0200 | [diff] [blame] | 1245 | .udc_start = fsl_udc_start, |
| 1246 | .udc_stop = fsl_udc_stop, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1247 | }; |
| 1248 | |
| 1249 | /* Set protocol stall on ep0, protocol stall will automatically be cleared |
| 1250 | on new transaction */ |
| 1251 | static void ep0stall(struct fsl_udc *udc) |
| 1252 | { |
| 1253 | u32 tmp; |
| 1254 | |
| 1255 | /* must set tx and rx to stall at the same time */ |
| 1256 | tmp = fsl_readl(&dr_regs->endptctrl[0]); |
| 1257 | tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL; |
| 1258 | fsl_writel(tmp, &dr_regs->endptctrl[0]); |
| 1259 | udc->ep0_state = WAIT_FOR_SETUP; |
| 1260 | udc->ep0_dir = 0; |
| 1261 | } |
| 1262 | |
| 1263 | /* Prime a status phase for ep0 */ |
| 1264 | static int ep0_prime_status(struct fsl_udc *udc, int direction) |
| 1265 | { |
| 1266 | struct fsl_req *req = udc->status_req; |
| 1267 | struct fsl_ep *ep; |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 1268 | int ret; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1269 | |
| 1270 | if (direction == EP_DIR_IN) |
| 1271 | udc->ep0_dir = USB_DIR_IN; |
| 1272 | else |
| 1273 | udc->ep0_dir = USB_DIR_OUT; |
| 1274 | |
| 1275 | ep = &udc->eps[0]; |
Peter Chen | f79a60b | 2012-02-29 20:19:46 +0800 | [diff] [blame] | 1276 | if (udc->ep0_state != DATA_STATE_XMIT) |
| 1277 | udc->ep0_state = WAIT_FOR_OUT_STATUS; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1278 | |
| 1279 | req->ep = ep; |
| 1280 | req->req.length = 0; |
| 1281 | req->req.status = -EINPROGRESS; |
| 1282 | req->req.actual = 0; |
| 1283 | req->req.complete = NULL; |
| 1284 | req->dtd_count = 0; |
| 1285 | |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 1286 | ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); |
| 1287 | if (ret) |
| 1288 | return ret; |
Anatolij Gustschin | 3140d5b | 2011-06-25 23:37:29 +0200 | [diff] [blame] | 1289 | |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 1290 | if (fsl_req_to_dtd(req, GFP_ATOMIC) == 0) |
Will Newton | 224b503 | 2008-08-12 15:39:15 +0100 | [diff] [blame] | 1291 | fsl_queue_td(ep, req); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1292 | else |
| 1293 | return -ENOMEM; |
| 1294 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1295 | list_add_tail(&req->queue, &ep->queue); |
| 1296 | |
Will Newton | 224b503 | 2008-08-12 15:39:15 +0100 | [diff] [blame] | 1297 | return 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1298 | } |
| 1299 | |
Will Newton | 825bee3 | 2008-08-12 15:39:14 +0100 | [diff] [blame] | 1300 | static void udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1301 | { |
| 1302 | struct fsl_ep *ep = get_ep_by_pipe(udc, pipe); |
| 1303 | |
Will Newton | 825bee3 | 2008-08-12 15:39:14 +0100 | [diff] [blame] | 1304 | if (ep->name) |
| 1305 | nuke(ep, -ESHUTDOWN); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1306 | } |
| 1307 | |
| 1308 | /* |
| 1309 | * ch9 Set address |
| 1310 | */ |
| 1311 | static void ch9setaddress(struct fsl_udc *udc, u16 value, u16 index, u16 length) |
| 1312 | { |
| 1313 | /* Save the new address to device struct */ |
| 1314 | udc->device_address = (u8) value; |
| 1315 | /* Update usb state */ |
| 1316 | udc->usb_state = USB_STATE_ADDRESS; |
| 1317 | /* Status phase */ |
| 1318 | if (ep0_prime_status(udc, EP_DIR_IN)) |
| 1319 | ep0stall(udc); |
| 1320 | } |
| 1321 | |
| 1322 | /* |
| 1323 | * ch9 Get status |
| 1324 | */ |
| 1325 | static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, |
| 1326 | u16 index, u16 length) |
| 1327 | { |
| 1328 | u16 tmp = 0; /* Status, cpu endian */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1329 | struct fsl_req *req; |
| 1330 | struct fsl_ep *ep; |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 1331 | int ret; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1332 | |
| 1333 | ep = &udc->eps[0]; |
| 1334 | |
| 1335 | if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) { |
| 1336 | /* Get device status */ |
| 1337 | tmp = 1 << USB_DEVICE_SELF_POWERED; |
| 1338 | tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP; |
| 1339 | } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) { |
| 1340 | /* Get interface status */ |
| 1341 | /* We don't have interface information in udc driver */ |
| 1342 | tmp = 0; |
| 1343 | } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) { |
| 1344 | /* Get endpoint status */ |
| 1345 | struct fsl_ep *target_ep; |
| 1346 | |
| 1347 | target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index)); |
| 1348 | |
| 1349 | /* stall if endpoint doesn't exist */ |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 1350 | if (!target_ep->ep.desc) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1351 | goto stall; |
| 1352 | tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep)) |
| 1353 | << USB_ENDPOINT_HALT; |
| 1354 | } |
| 1355 | |
| 1356 | udc->ep0_dir = USB_DIR_IN; |
| 1357 | /* Borrow the per device status_req */ |
| 1358 | req = udc->status_req; |
| 1359 | /* Fill in the reqest structure */ |
| 1360 | *((u16 *) req->req.buf) = cpu_to_le16(tmp); |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1361 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1362 | req->ep = ep; |
| 1363 | req->req.length = 2; |
| 1364 | req->req.status = -EINPROGRESS; |
| 1365 | req->req.actual = 0; |
| 1366 | req->req.complete = NULL; |
| 1367 | req->dtd_count = 0; |
| 1368 | |
Felipe Balbi | 5f6da77 | 2013-01-28 17:03:21 +0200 | [diff] [blame] | 1369 | ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); |
| 1370 | if (ret) |
| 1371 | goto stall; |
Anatolij Gustschin | 3140d5b | 2011-06-25 23:37:29 +0200 | [diff] [blame] | 1372 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1373 | /* prime the data phase */ |
Peter Chen | c5cc5ed | 2012-02-16 09:36:25 +0800 | [diff] [blame] | 1374 | if ((fsl_req_to_dtd(req, GFP_ATOMIC) == 0)) |
Will Newton | 224b503 | 2008-08-12 15:39:15 +0100 | [diff] [blame] | 1375 | fsl_queue_td(ep, req); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1376 | else /* no mem */ |
| 1377 | goto stall; |
| 1378 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1379 | list_add_tail(&req->queue, &ep->queue); |
| 1380 | udc->ep0_state = DATA_STATE_XMIT; |
Peter Chen | f79a60b | 2012-02-29 20:19:46 +0800 | [diff] [blame] | 1381 | if (ep0_prime_status(udc, EP_DIR_OUT)) |
| 1382 | ep0stall(udc); |
| 1383 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1384 | return; |
| 1385 | stall: |
| 1386 | ep0stall(udc); |
| 1387 | } |
| 1388 | |
| 1389 | static void setup_received_irq(struct fsl_udc *udc, |
| 1390 | struct usb_ctrlrequest *setup) |
| 1391 | { |
| 1392 | u16 wValue = le16_to_cpu(setup->wValue); |
| 1393 | u16 wIndex = le16_to_cpu(setup->wIndex); |
| 1394 | u16 wLength = le16_to_cpu(setup->wLength); |
| 1395 | |
| 1396 | udc_reset_ep_queue(udc, 0); |
| 1397 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1398 | /* We process some stardard setup requests here */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1399 | switch (setup->bRequest) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1400 | case USB_REQ_GET_STATUS: |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1401 | /* Data+Status phase from udc */ |
| 1402 | if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK)) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1403 | != (USB_DIR_IN | USB_TYPE_STANDARD)) |
| 1404 | break; |
| 1405 | ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength); |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1406 | return; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1407 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1408 | case USB_REQ_SET_ADDRESS: |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1409 | /* Status phase from udc */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1410 | if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD |
| 1411 | | USB_RECIP_DEVICE)) |
| 1412 | break; |
| 1413 | ch9setaddress(udc, wValue, wIndex, wLength); |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1414 | return; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1415 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1416 | case USB_REQ_CLEAR_FEATURE: |
| 1417 | case USB_REQ_SET_FEATURE: |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1418 | /* Status phase from udc */ |
| 1419 | { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1420 | int rc = -EOPNOTSUPP; |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1421 | u16 ptc = 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1422 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1423 | if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK)) |
| 1424 | == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1425 | int pipe = get_pipe_by_windex(wIndex); |
| 1426 | struct fsl_ep *ep; |
| 1427 | |
Peter Chen | 118d63f | 2012-01-11 13:39:07 +0800 | [diff] [blame] | 1428 | if (wValue != 0 || wLength != 0 || pipe >= udc->max_ep) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1429 | break; |
| 1430 | ep = get_ep_by_pipe(udc, pipe); |
| 1431 | |
| 1432 | spin_unlock(&udc->lock); |
| 1433 | rc = fsl_ep_set_halt(&ep->ep, |
| 1434 | (setup->bRequest == USB_REQ_SET_FEATURE) |
| 1435 | ? 1 : 0); |
| 1436 | spin_lock(&udc->lock); |
| 1437 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1438 | } else if ((setup->bRequestType & (USB_RECIP_MASK |
| 1439 | | USB_TYPE_MASK)) == (USB_RECIP_DEVICE |
| 1440 | | USB_TYPE_STANDARD)) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1441 | /* Note: The driver has not include OTG support yet. |
| 1442 | * This will be set when OTG support is added */ |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1443 | if (wValue == USB_DEVICE_TEST_MODE) |
| 1444 | ptc = wIndex >> 8; |
| 1445 | else if (gadget_is_otg(&udc->gadget)) { |
| 1446 | if (setup->bRequest == |
| 1447 | USB_DEVICE_B_HNP_ENABLE) |
| 1448 | udc->gadget.b_hnp_enable = 1; |
| 1449 | else if (setup->bRequest == |
| 1450 | USB_DEVICE_A_HNP_SUPPORT) |
| 1451 | udc->gadget.a_hnp_support = 1; |
| 1452 | else if (setup->bRequest == |
| 1453 | USB_DEVICE_A_ALT_HNP_SUPPORT) |
| 1454 | udc->gadget.a_alt_hnp_support = 1; |
| 1455 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1456 | rc = 0; |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1457 | } else |
| 1458 | break; |
| 1459 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1460 | if (rc == 0) { |
| 1461 | if (ep0_prime_status(udc, EP_DIR_IN)) |
| 1462 | ep0stall(udc); |
| 1463 | } |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 1464 | if (ptc) { |
| 1465 | u32 tmp; |
| 1466 | |
| 1467 | mdelay(10); |
| 1468 | tmp = fsl_readl(&dr_regs->portsc1) | (ptc << 16); |
| 1469 | fsl_writel(tmp, &dr_regs->portsc1); |
| 1470 | printk(KERN_INFO "udc: switch to test mode %d.\n", ptc); |
| 1471 | } |
| 1472 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1473 | return; |
| 1474 | } |
| 1475 | |
| 1476 | default: |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1477 | break; |
| 1478 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1479 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1480 | /* Requests handled by gadget */ |
| 1481 | if (wLength) { |
| 1482 | /* Data phase from gadget, status phase from udc */ |
| 1483 | udc->ep0_dir = (setup->bRequestType & USB_DIR_IN) |
| 1484 | ? USB_DIR_IN : USB_DIR_OUT; |
| 1485 | spin_unlock(&udc->lock); |
| 1486 | if (udc->driver->setup(&udc->gadget, |
| 1487 | &udc->local_setup_buff) < 0) |
| 1488 | ep0stall(udc); |
| 1489 | spin_lock(&udc->lock); |
| 1490 | udc->ep0_state = (setup->bRequestType & USB_DIR_IN) |
| 1491 | ? DATA_STATE_XMIT : DATA_STATE_RECV; |
Peter Chen | f79a60b | 2012-02-29 20:19:46 +0800 | [diff] [blame] | 1492 | /* |
| 1493 | * If the data stage is IN, send status prime immediately. |
| 1494 | * See 2.0 Spec chapter 8.5.3.3 for detail. |
| 1495 | */ |
| 1496 | if (udc->ep0_state == DATA_STATE_XMIT) |
| 1497 | if (ep0_prime_status(udc, EP_DIR_OUT)) |
| 1498 | ep0stall(udc); |
| 1499 | |
Li Yang | 39d1f8c | 2007-08-17 08:36:44 -0700 | [diff] [blame] | 1500 | } else { |
| 1501 | /* No data phase, IN status from gadget */ |
| 1502 | udc->ep0_dir = USB_DIR_IN; |
| 1503 | spin_unlock(&udc->lock); |
| 1504 | if (udc->driver->setup(&udc->gadget, |
| 1505 | &udc->local_setup_buff) < 0) |
| 1506 | ep0stall(udc); |
| 1507 | spin_lock(&udc->lock); |
| 1508 | udc->ep0_state = WAIT_FOR_OUT_STATUS; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | /* Process request for Data or Status phase of ep0 |
| 1513 | * prime status phase if needed */ |
| 1514 | static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0, |
| 1515 | struct fsl_req *req) |
| 1516 | { |
| 1517 | if (udc->usb_state == USB_STATE_ADDRESS) { |
| 1518 | /* Set the new address */ |
| 1519 | u32 new_address = (u32) udc->device_address; |
| 1520 | fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS, |
| 1521 | &dr_regs->deviceaddr); |
| 1522 | } |
| 1523 | |
| 1524 | done(ep0, req, 0); |
| 1525 | |
| 1526 | switch (udc->ep0_state) { |
| 1527 | case DATA_STATE_XMIT: |
Peter Chen | f79a60b | 2012-02-29 20:19:46 +0800 | [diff] [blame] | 1528 | /* already primed at setup_received_irq */ |
| 1529 | udc->ep0_state = WAIT_FOR_OUT_STATUS; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1530 | break; |
| 1531 | case DATA_STATE_RECV: |
| 1532 | /* send status phase */ |
| 1533 | if (ep0_prime_status(udc, EP_DIR_IN)) |
| 1534 | ep0stall(udc); |
| 1535 | break; |
| 1536 | case WAIT_FOR_OUT_STATUS: |
| 1537 | udc->ep0_state = WAIT_FOR_SETUP; |
| 1538 | break; |
| 1539 | case WAIT_FOR_SETUP: |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 1540 | ERR("Unexpect ep0 packets\n"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1541 | break; |
| 1542 | default: |
| 1543 | ep0stall(udc); |
| 1544 | break; |
| 1545 | } |
| 1546 | } |
| 1547 | |
| 1548 | /* Tripwire mechanism to ensure a setup packet payload is extracted without |
| 1549 | * being corrupted by another incoming setup packet */ |
| 1550 | static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr) |
| 1551 | { |
| 1552 | u32 temp; |
| 1553 | struct ep_queue_head *qh; |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1554 | struct fsl_usb2_platform_data *pdata = udc->pdata; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1555 | |
| 1556 | qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT]; |
| 1557 | |
| 1558 | /* Clear bit in ENDPTSETUPSTAT */ |
| 1559 | temp = fsl_readl(&dr_regs->endptsetupstat); |
| 1560 | fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat); |
| 1561 | |
| 1562 | /* while a hazard exists when setup package arrives */ |
| 1563 | do { |
| 1564 | /* Set Setup Tripwire */ |
| 1565 | temp = fsl_readl(&dr_regs->usbcmd); |
| 1566 | fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd); |
| 1567 | |
| 1568 | /* Copy the setup packet to local buffer */ |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1569 | if (pdata->le_setup_buf) { |
| 1570 | u32 *p = (u32 *)buffer_ptr; |
| 1571 | u32 *s = (u32 *)qh->setup_buffer; |
| 1572 | |
| 1573 | /* Convert little endian setup buffer to CPU endian */ |
| 1574 | *p++ = le32_to_cpu(*s++); |
| 1575 | *p = le32_to_cpu(*s); |
| 1576 | } else { |
| 1577 | memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8); |
| 1578 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1579 | } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW)); |
| 1580 | |
| 1581 | /* Clear Setup Tripwire */ |
| 1582 | temp = fsl_readl(&dr_regs->usbcmd); |
| 1583 | fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd); |
| 1584 | } |
| 1585 | |
| 1586 | /* process-ep_req(): free the completed Tds for this req */ |
| 1587 | static int process_ep_req(struct fsl_udc *udc, int pipe, |
| 1588 | struct fsl_req *curr_req) |
| 1589 | { |
| 1590 | struct ep_td_struct *curr_td; |
| 1591 | int td_complete, actual, remaining_length, j, tmp; |
| 1592 | int status = 0; |
| 1593 | int errors = 0; |
| 1594 | struct ep_queue_head *curr_qh = &udc->ep_qh[pipe]; |
| 1595 | int direction = pipe % 2; |
| 1596 | |
| 1597 | curr_td = curr_req->head; |
| 1598 | td_complete = 0; |
| 1599 | actual = curr_req->req.length; |
| 1600 | |
| 1601 | for (j = 0; j < curr_req->dtd_count; j++) { |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1602 | remaining_length = (hc32_to_cpu(curr_td->size_ioc_sts) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1603 | & DTD_PACKET_SIZE) |
| 1604 | >> DTD_LENGTH_BIT_POS; |
| 1605 | actual -= remaining_length; |
| 1606 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1607 | errors = hc32_to_cpu(curr_td->size_ioc_sts); |
| 1608 | if (errors & DTD_ERROR_MASK) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1609 | if (errors & DTD_STATUS_HALTED) { |
| 1610 | ERR("dTD error %08x QH=%d\n", errors, pipe); |
| 1611 | /* Clear the errors and Halt condition */ |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1612 | tmp = hc32_to_cpu(curr_qh->size_ioc_int_sts); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1613 | tmp &= ~errors; |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1614 | curr_qh->size_ioc_int_sts = cpu_to_hc32(tmp); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1615 | status = -EPIPE; |
| 1616 | /* FIXME: continue with next queued TD? */ |
| 1617 | |
| 1618 | break; |
| 1619 | } |
| 1620 | if (errors & DTD_STATUS_DATA_BUFF_ERR) { |
| 1621 | VDBG("Transfer overflow"); |
| 1622 | status = -EPROTO; |
| 1623 | break; |
| 1624 | } else if (errors & DTD_STATUS_TRANSACTION_ERR) { |
| 1625 | VDBG("ISO error"); |
| 1626 | status = -EILSEQ; |
| 1627 | break; |
| 1628 | } else |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1629 | ERR("Unknown error has occurred (0x%x)!\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1630 | errors); |
| 1631 | |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 1632 | } else if (hc32_to_cpu(curr_td->size_ioc_sts) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1633 | & DTD_STATUS_ACTIVE) { |
| 1634 | VDBG("Request not complete"); |
| 1635 | status = REQ_UNCOMPLETE; |
| 1636 | return status; |
| 1637 | } else if (remaining_length) { |
| 1638 | if (direction) { |
| 1639 | VDBG("Transmit dTD remaining length not zero"); |
| 1640 | status = -EPROTO; |
| 1641 | break; |
| 1642 | } else { |
| 1643 | td_complete++; |
| 1644 | break; |
| 1645 | } |
| 1646 | } else { |
| 1647 | td_complete++; |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 1648 | VDBG("dTD transmitted successful"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1649 | } |
| 1650 | |
| 1651 | if (j != curr_req->dtd_count - 1) |
| 1652 | curr_td = (struct ep_td_struct *)curr_td->next_td_virt; |
| 1653 | } |
| 1654 | |
| 1655 | if (status) |
| 1656 | return status; |
| 1657 | |
| 1658 | curr_req->req.actual = actual; |
| 1659 | |
| 1660 | return 0; |
| 1661 | } |
| 1662 | |
| 1663 | /* Process a DTD completion interrupt */ |
| 1664 | static void dtd_complete_irq(struct fsl_udc *udc) |
| 1665 | { |
| 1666 | u32 bit_pos; |
| 1667 | int i, ep_num, direction, bit_mask, status; |
| 1668 | struct fsl_ep *curr_ep; |
| 1669 | struct fsl_req *curr_req, *temp_req; |
| 1670 | |
| 1671 | /* Clear the bits in the register */ |
| 1672 | bit_pos = fsl_readl(&dr_regs->endptcomplete); |
| 1673 | fsl_writel(bit_pos, &dr_regs->endptcomplete); |
| 1674 | |
| 1675 | if (!bit_pos) |
| 1676 | return; |
| 1677 | |
Peter Chen | 118d63f | 2012-01-11 13:39:07 +0800 | [diff] [blame] | 1678 | for (i = 0; i < udc->max_ep; i++) { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1679 | ep_num = i >> 1; |
| 1680 | direction = i % 2; |
| 1681 | |
| 1682 | bit_mask = 1 << (ep_num + 16 * direction); |
| 1683 | |
| 1684 | if (!(bit_pos & bit_mask)) |
| 1685 | continue; |
| 1686 | |
| 1687 | curr_ep = get_ep_by_pipe(udc, i); |
| 1688 | |
| 1689 | /* If the ep is configured */ |
| 1690 | if (curr_ep->name == NULL) { |
Arjan van de Ven | b6c6393 | 2008-07-25 01:45:52 -0700 | [diff] [blame] | 1691 | WARNING("Invalid EP?"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1692 | continue; |
| 1693 | } |
| 1694 | |
| 1695 | /* process the req queue until an uncomplete request */ |
| 1696 | list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue, |
| 1697 | queue) { |
| 1698 | status = process_ep_req(udc, i, curr_req); |
| 1699 | |
| 1700 | VDBG("status of process_ep_req= %d, ep = %d", |
| 1701 | status, ep_num); |
| 1702 | if (status == REQ_UNCOMPLETE) |
| 1703 | break; |
| 1704 | /* write back status to req */ |
| 1705 | curr_req->req.status = status; |
| 1706 | |
| 1707 | if (ep_num == 0) { |
| 1708 | ep0_req_complete(udc, curr_ep, curr_req); |
| 1709 | break; |
| 1710 | } else |
| 1711 | done(curr_ep, curr_req, status); |
| 1712 | } |
| 1713 | } |
| 1714 | } |
| 1715 | |
Michal Nazarewicz | e538dfd | 2011-08-30 17:11:19 +0200 | [diff] [blame] | 1716 | static inline enum usb_device_speed portscx_device_speed(u32 reg) |
| 1717 | { |
Alexander Aring | 0e042be | 2011-11-04 16:16:26 +0100 | [diff] [blame] | 1718 | switch (reg & PORTSCX_PORT_SPEED_MASK) { |
Michal Nazarewicz | e538dfd | 2011-08-30 17:11:19 +0200 | [diff] [blame] | 1719 | case PORTSCX_PORT_SPEED_HIGH: |
| 1720 | return USB_SPEED_HIGH; |
| 1721 | case PORTSCX_PORT_SPEED_FULL: |
| 1722 | return USB_SPEED_FULL; |
| 1723 | case PORTSCX_PORT_SPEED_LOW: |
| 1724 | return USB_SPEED_LOW; |
| 1725 | default: |
| 1726 | return USB_SPEED_UNKNOWN; |
| 1727 | } |
| 1728 | } |
| 1729 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1730 | /* Process a port change interrupt */ |
| 1731 | static void port_change_irq(struct fsl_udc *udc) |
| 1732 | { |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1733 | if (udc->bus_reset) |
| 1734 | udc->bus_reset = 0; |
| 1735 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1736 | /* Bus resetting is finished */ |
Michal Nazarewicz | e538dfd | 2011-08-30 17:11:19 +0200 | [diff] [blame] | 1737 | if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1738 | /* Get the speed */ |
Michal Nazarewicz | e538dfd | 2011-08-30 17:11:19 +0200 | [diff] [blame] | 1739 | udc->gadget.speed = |
| 1740 | portscx_device_speed(fsl_readl(&dr_regs->portsc1)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1741 | |
| 1742 | /* Update USB state */ |
| 1743 | if (!udc->resume_state) |
| 1744 | udc->usb_state = USB_STATE_DEFAULT; |
| 1745 | } |
| 1746 | |
| 1747 | /* Process suspend interrupt */ |
| 1748 | static void suspend_irq(struct fsl_udc *udc) |
| 1749 | { |
| 1750 | udc->resume_state = udc->usb_state; |
| 1751 | udc->usb_state = USB_STATE_SUSPENDED; |
| 1752 | |
| 1753 | /* report suspend to the driver, serial.c does not support this */ |
| 1754 | if (udc->driver->suspend) |
| 1755 | udc->driver->suspend(&udc->gadget); |
| 1756 | } |
| 1757 | |
| 1758 | static void bus_resume(struct fsl_udc *udc) |
| 1759 | { |
| 1760 | udc->usb_state = udc->resume_state; |
| 1761 | udc->resume_state = 0; |
| 1762 | |
| 1763 | /* report resume to the driver, serial.c does not support this */ |
| 1764 | if (udc->driver->resume) |
| 1765 | udc->driver->resume(&udc->gadget); |
| 1766 | } |
| 1767 | |
| 1768 | /* Clear up all ep queues */ |
| 1769 | static int reset_queues(struct fsl_udc *udc) |
| 1770 | { |
| 1771 | u8 pipe; |
| 1772 | |
| 1773 | for (pipe = 0; pipe < udc->max_pipes; pipe++) |
| 1774 | udc_reset_ep_queue(udc, pipe); |
| 1775 | |
| 1776 | /* report disconnect; the driver is already quiesced */ |
Li Yang | 185e3de | 2008-05-29 21:04:45 +0800 | [diff] [blame] | 1777 | spin_unlock(&udc->lock); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1778 | udc->driver->disconnect(&udc->gadget); |
Li Yang | 185e3de | 2008-05-29 21:04:45 +0800 | [diff] [blame] | 1779 | spin_lock(&udc->lock); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1780 | |
| 1781 | return 0; |
| 1782 | } |
| 1783 | |
| 1784 | /* Process reset interrupt */ |
| 1785 | static void reset_irq(struct fsl_udc *udc) |
| 1786 | { |
| 1787 | u32 temp; |
| 1788 | unsigned long timeout; |
| 1789 | |
| 1790 | /* Clear the device address */ |
| 1791 | temp = fsl_readl(&dr_regs->deviceaddr); |
| 1792 | fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr); |
| 1793 | |
| 1794 | udc->device_address = 0; |
| 1795 | |
| 1796 | /* Clear usb state */ |
| 1797 | udc->resume_state = 0; |
| 1798 | udc->ep0_dir = 0; |
| 1799 | udc->ep0_state = WAIT_FOR_SETUP; |
| 1800 | udc->remote_wakeup = 0; /* default to 0 on reset */ |
| 1801 | udc->gadget.b_hnp_enable = 0; |
| 1802 | udc->gadget.a_hnp_support = 0; |
| 1803 | udc->gadget.a_alt_hnp_support = 0; |
| 1804 | |
| 1805 | /* Clear all the setup token semaphores */ |
| 1806 | temp = fsl_readl(&dr_regs->endptsetupstat); |
| 1807 | fsl_writel(temp, &dr_regs->endptsetupstat); |
| 1808 | |
| 1809 | /* Clear all the endpoint complete status bits */ |
| 1810 | temp = fsl_readl(&dr_regs->endptcomplete); |
| 1811 | fsl_writel(temp, &dr_regs->endptcomplete); |
| 1812 | |
| 1813 | timeout = jiffies + 100; |
| 1814 | while (fsl_readl(&dr_regs->endpointprime)) { |
| 1815 | /* Wait until all endptprime bits cleared */ |
| 1816 | if (time_after(jiffies, timeout)) { |
| 1817 | ERR("Timeout for reset\n"); |
| 1818 | break; |
| 1819 | } |
| 1820 | cpu_relax(); |
| 1821 | } |
| 1822 | |
| 1823 | /* Write 1s to the flush register */ |
| 1824 | fsl_writel(0xffffffff, &dr_regs->endptflush); |
| 1825 | |
| 1826 | if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) { |
| 1827 | VDBG("Bus reset"); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1828 | /* Bus is reseting */ |
| 1829 | udc->bus_reset = 1; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1830 | /* Reset all the queues, include XD, dTD, EP queue |
| 1831 | * head and TR Queue */ |
| 1832 | reset_queues(udc); |
| 1833 | udc->usb_state = USB_STATE_DEFAULT; |
| 1834 | } else { |
| 1835 | VDBG("Controller reset"); |
| 1836 | /* initialize usb hw reg except for regs for EP, not |
| 1837 | * touch usbintr reg */ |
| 1838 | dr_controller_setup(udc); |
| 1839 | |
| 1840 | /* Reset all internal used Queues */ |
| 1841 | reset_queues(udc); |
| 1842 | |
| 1843 | ep0_setup(udc); |
| 1844 | |
| 1845 | /* Enable DR IRQ reg, Set Run bit, change udc state */ |
| 1846 | dr_controller_run(udc); |
| 1847 | udc->usb_state = USB_STATE_ATTACHED; |
| 1848 | } |
| 1849 | } |
| 1850 | |
| 1851 | /* |
| 1852 | * USB device controller interrupt handler |
| 1853 | */ |
| 1854 | static irqreturn_t fsl_udc_irq(int irq, void *_udc) |
| 1855 | { |
| 1856 | struct fsl_udc *udc = _udc; |
| 1857 | u32 irq_src; |
| 1858 | irqreturn_t status = IRQ_NONE; |
| 1859 | unsigned long flags; |
| 1860 | |
| 1861 | /* Disable ISR for OTG host mode */ |
| 1862 | if (udc->stopped) |
| 1863 | return IRQ_NONE; |
| 1864 | spin_lock_irqsave(&udc->lock, flags); |
| 1865 | irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr); |
| 1866 | /* Clear notification bits */ |
| 1867 | fsl_writel(irq_src, &dr_regs->usbsts); |
| 1868 | |
| 1869 | /* VDBG("irq_src [0x%8x]", irq_src); */ |
| 1870 | |
| 1871 | /* Need to resume? */ |
| 1872 | if (udc->usb_state == USB_STATE_SUSPENDED) |
| 1873 | if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0) |
| 1874 | bus_resume(udc); |
| 1875 | |
| 1876 | /* USB Interrupt */ |
| 1877 | if (irq_src & USB_STS_INT) { |
| 1878 | VDBG("Packet int"); |
| 1879 | /* Setup package, we only support ep0 as control ep */ |
| 1880 | if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) { |
| 1881 | tripwire_handler(udc, 0, |
| 1882 | (u8 *) (&udc->local_setup_buff)); |
| 1883 | setup_received_irq(udc, &udc->local_setup_buff); |
| 1884 | status = IRQ_HANDLED; |
| 1885 | } |
| 1886 | |
| 1887 | /* completion of dtd */ |
| 1888 | if (fsl_readl(&dr_regs->endptcomplete)) { |
| 1889 | dtd_complete_irq(udc); |
| 1890 | status = IRQ_HANDLED; |
| 1891 | } |
| 1892 | } |
| 1893 | |
| 1894 | /* SOF (for ISO transfer) */ |
| 1895 | if (irq_src & USB_STS_SOF) { |
| 1896 | status = IRQ_HANDLED; |
| 1897 | } |
| 1898 | |
| 1899 | /* Port Change */ |
| 1900 | if (irq_src & USB_STS_PORT_CHANGE) { |
| 1901 | port_change_irq(udc); |
| 1902 | status = IRQ_HANDLED; |
| 1903 | } |
| 1904 | |
| 1905 | /* Reset Received */ |
| 1906 | if (irq_src & USB_STS_RESET) { |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1907 | VDBG("reset int"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1908 | reset_irq(udc); |
| 1909 | status = IRQ_HANDLED; |
| 1910 | } |
| 1911 | |
| 1912 | /* Sleep Enable (Suspend) */ |
| 1913 | if (irq_src & USB_STS_SUSPEND) { |
| 1914 | suspend_irq(udc); |
| 1915 | status = IRQ_HANDLED; |
| 1916 | } |
| 1917 | |
| 1918 | if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) { |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 1919 | VDBG("Error IRQ %x", irq_src); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1920 | } |
| 1921 | |
| 1922 | spin_unlock_irqrestore(&udc->lock, flags); |
| 1923 | return status; |
| 1924 | } |
| 1925 | |
| 1926 | /*----------------------------------------------------------------* |
| 1927 | * Hook to gadget drivers |
| 1928 | * Called by initialization code of gadget drivers |
| 1929 | *----------------------------------------------------------------*/ |
Felipe Balbi | eb65796 | 2013-01-24 10:43:52 +0200 | [diff] [blame] | 1930 | static int fsl_udc_start(struct usb_gadget *g, |
| 1931 | struct usb_gadget_driver *driver) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1932 | { |
Felipe Balbi | eb65796 | 2013-01-24 10:43:52 +0200 | [diff] [blame] | 1933 | int retval = 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1934 | unsigned long flags = 0; |
| 1935 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1936 | /* lock is needed but whether should use this lock or another */ |
| 1937 | spin_lock_irqsave(&udc_controller->lock, flags); |
| 1938 | |
Will Newton | 7483cff8 | 2008-08-12 15:39:09 +0100 | [diff] [blame] | 1939 | driver->driver.bus = NULL; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1940 | /* hook up the driver */ |
| 1941 | udc_controller->driver = driver; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1942 | spin_unlock_irqrestore(&udc_controller->lock, flags); |
| 1943 | |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 1944 | if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1945 | /* Suspend the controller until OTG enable it */ |
| 1946 | udc_controller->stopped = 1; |
| 1947 | printk(KERN_INFO "Suspend udc for OTG auto detect\n"); |
| 1948 | |
| 1949 | /* connect to bus through transceiver */ |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 1950 | if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { |
Heikki Krogerus | 6e13c65 | 2012-02-13 13:24:20 +0200 | [diff] [blame] | 1951 | retval = otg_set_peripheral( |
| 1952 | udc_controller->transceiver->otg, |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1953 | &udc_controller->gadget); |
| 1954 | if (retval < 0) { |
| 1955 | ERR("can't bind to transceiver\n"); |
| 1956 | driver->unbind(&udc_controller->gadget); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 1957 | udc_controller->driver = 0; |
| 1958 | return retval; |
| 1959 | } |
| 1960 | } |
| 1961 | } else { |
| 1962 | /* Enable DR IRQ reg and set USBCMD reg Run bit */ |
| 1963 | dr_controller_run(udc_controller); |
| 1964 | udc_controller->usb_state = USB_STATE_ATTACHED; |
| 1965 | udc_controller->ep0_state = WAIT_FOR_SETUP; |
| 1966 | udc_controller->ep0_dir = 0; |
| 1967 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1968 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1969 | return retval; |
| 1970 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1971 | |
| 1972 | /* Disconnect from gadget driver */ |
Felipe Balbi | eb65796 | 2013-01-24 10:43:52 +0200 | [diff] [blame] | 1973 | static int fsl_udc_stop(struct usb_gadget *g, |
| 1974 | struct usb_gadget_driver *driver) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1975 | { |
| 1976 | struct fsl_ep *loop_ep; |
| 1977 | unsigned long flags; |
| 1978 | |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 1979 | if (!IS_ERR_OR_NULL(udc_controller->transceiver)) |
Heikki Krogerus | 6e13c65 | 2012-02-13 13:24:20 +0200 | [diff] [blame] | 1980 | otg_set_peripheral(udc_controller->transceiver->otg, NULL); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 1981 | |
| 1982 | /* stop DR, disable intr */ |
| 1983 | dr_controller_stop(udc_controller); |
| 1984 | |
| 1985 | /* in fact, no needed */ |
| 1986 | udc_controller->usb_state = USB_STATE_ATTACHED; |
| 1987 | udc_controller->ep0_state = WAIT_FOR_SETUP; |
| 1988 | udc_controller->ep0_dir = 0; |
| 1989 | |
| 1990 | /* stand operation */ |
| 1991 | spin_lock_irqsave(&udc_controller->lock, flags); |
| 1992 | udc_controller->gadget.speed = USB_SPEED_UNKNOWN; |
| 1993 | nuke(&udc_controller->eps[0], -ESHUTDOWN); |
| 1994 | list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list, |
| 1995 | ep.ep_list) |
| 1996 | nuke(loop_ep, -ESHUTDOWN); |
| 1997 | spin_unlock_irqrestore(&udc_controller->lock, flags); |
| 1998 | |
Will Newton | 7483cff8 | 2008-08-12 15:39:09 +0100 | [diff] [blame] | 1999 | udc_controller->driver = NULL; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2000 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2001 | return 0; |
| 2002 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2003 | |
| 2004 | /*------------------------------------------------------------------------- |
| 2005 | PROC File System Support |
| 2006 | -------------------------------------------------------------------------*/ |
| 2007 | #ifdef CONFIG_USB_GADGET_DEBUG_FILES |
| 2008 | |
| 2009 | #include <linux/seq_file.h> |
| 2010 | |
| 2011 | static const char proc_filename[] = "driver/fsl_usb2_udc"; |
| 2012 | |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2013 | static int fsl_proc_read(struct seq_file *m, void *v) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2014 | { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2015 | unsigned long flags; |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2016 | int i; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2017 | u32 tmp_reg; |
| 2018 | struct fsl_ep *ep = NULL; |
| 2019 | struct fsl_req *req; |
| 2020 | |
| 2021 | struct fsl_udc *udc = udc_controller; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2022 | |
| 2023 | spin_lock_irqsave(&udc->lock, flags); |
| 2024 | |
Joe Perches | dc0d5c1 | 2007-12-17 11:40:18 -0800 | [diff] [blame] | 2025 | /* ------basic driver information ---- */ |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2026 | seq_printf(m, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2027 | DRIVER_DESC "\n" |
| 2028 | "%s version: %s\n" |
| 2029 | "Gadget driver: %s\n\n", |
| 2030 | driver_name, DRIVER_VERSION, |
| 2031 | udc->driver ? udc->driver->driver.name : "(none)"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2032 | |
| 2033 | /* ------ DR Registers ----- */ |
| 2034 | tmp_reg = fsl_readl(&dr_regs->usbcmd); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2035 | seq_printf(m, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2036 | "USBCMD reg:\n" |
| 2037 | "SetupTW: %d\n" |
| 2038 | "Run/Stop: %s\n\n", |
| 2039 | (tmp_reg & USB_CMD_SUTW) ? 1 : 0, |
| 2040 | (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2041 | |
| 2042 | tmp_reg = fsl_readl(&dr_regs->usbsts); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2043 | seq_printf(m, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2044 | "USB Status Reg:\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2045 | "Dr Suspend: %d Reset Received: %d System Error: %s " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2046 | "USB Error Interrupt: %s\n\n", |
| 2047 | (tmp_reg & USB_STS_SUSPEND) ? 1 : 0, |
| 2048 | (tmp_reg & USB_STS_RESET) ? 1 : 0, |
| 2049 | (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal", |
| 2050 | (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2051 | |
| 2052 | tmp_reg = fsl_readl(&dr_regs->usbintr); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2053 | seq_printf(m, |
Masanari Iida | 984e833 | 2012-11-01 00:03:51 +0900 | [diff] [blame] | 2054 | "USB Interrupt Enable Reg:\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2055 | "Sleep Enable: %d SOF Received Enable: %d " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2056 | "Reset Enable: %d\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2057 | "System Error Enable: %d " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2058 | "Port Change Dectected Enable: %d\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2059 | "USB Error Intr Enable: %d USB Intr Enable: %d\n\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2060 | (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0, |
| 2061 | (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0, |
| 2062 | (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0, |
| 2063 | (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0, |
| 2064 | (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0, |
| 2065 | (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0, |
| 2066 | (tmp_reg & USB_INTR_INT_EN) ? 1 : 0); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2067 | |
| 2068 | tmp_reg = fsl_readl(&dr_regs->frindex); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2069 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2070 | "USB Frame Index Reg: Frame Number is 0x%x\n\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2071 | (tmp_reg & USB_FRINDEX_MASKS)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2072 | |
| 2073 | tmp_reg = fsl_readl(&dr_regs->deviceaddr); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2074 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2075 | "USB Device Address Reg: Device Addr is 0x%x\n\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2076 | (tmp_reg & USB_DEVICE_ADDRESS_MASK)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2077 | |
| 2078 | tmp_reg = fsl_readl(&dr_regs->endpointlistaddr); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2079 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2080 | "USB Endpoint List Address Reg: " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2081 | "Device Addr is 0x%x\n\n", |
| 2082 | (tmp_reg & USB_EP_LIST_ADDRESS_MASK)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2083 | |
| 2084 | tmp_reg = fsl_readl(&dr_regs->portsc1); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2085 | seq_printf(m, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2086 | "USB Port Status&Control Reg:\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2087 | "Port Transceiver Type : %s Port Speed: %s\n" |
| 2088 | "PHY Low Power Suspend: %s Port Reset: %s " |
| 2089 | "Port Suspend Mode: %s\n" |
| 2090 | "Over-current Change: %s " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2091 | "Port Enable/Disable Change: %s\n" |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2092 | "Port Enabled/Disabled: %s " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2093 | "Current Connect Status: %s\n\n", ( { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2094 | const char *s; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2095 | switch (tmp_reg & PORTSCX_PTS_FSLS) { |
| 2096 | case PORTSCX_PTS_UTMI: |
| 2097 | s = "UTMI"; break; |
| 2098 | case PORTSCX_PTS_ULPI: |
| 2099 | s = "ULPI "; break; |
| 2100 | case PORTSCX_PTS_FSLS: |
| 2101 | s = "FS/LS Serial"; break; |
| 2102 | default: |
| 2103 | s = "None"; break; |
| 2104 | } |
Michal Nazarewicz | e538dfd | 2011-08-30 17:11:19 +0200 | [diff] [blame] | 2105 | s;} ), |
| 2106 | usb_speed_string(portscx_device_speed(tmp_reg)), |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2107 | (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ? |
| 2108 | "Normal PHY mode" : "Low power mode", |
| 2109 | (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" : |
| 2110 | "Not in Reset", |
| 2111 | (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in", |
| 2112 | (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" : |
| 2113 | "No", |
| 2114 | (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" : |
| 2115 | "Not change", |
| 2116 | (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" : |
| 2117 | "Not correct", |
| 2118 | (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ? |
| 2119 | "Attached" : "Not-Att"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2120 | |
| 2121 | tmp_reg = fsl_readl(&dr_regs->usbmode); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2122 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2123 | "USB Mode Reg: Controller Mode is: %s\n\n", ( { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2124 | const char *s; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2125 | switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) { |
| 2126 | case USB_MODE_CTRL_MODE_IDLE: |
| 2127 | s = "Idle"; break; |
| 2128 | case USB_MODE_CTRL_MODE_DEVICE: |
| 2129 | s = "Device Controller"; break; |
| 2130 | case USB_MODE_CTRL_MODE_HOST: |
| 2131 | s = "Host Controller"; break; |
| 2132 | default: |
| 2133 | s = "None"; break; |
| 2134 | } |
| 2135 | s; |
| 2136 | } )); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2137 | |
| 2138 | tmp_reg = fsl_readl(&dr_regs->endptsetupstat); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2139 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2140 | "Endpoint Setup Status Reg: SETUP on ep 0x%x\n\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2141 | (tmp_reg & EP_SETUP_STATUS_MASK)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2142 | |
| 2143 | for (i = 0; i < udc->max_ep / 2; i++) { |
| 2144 | tmp_reg = fsl_readl(&dr_regs->endptctrl[i]); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2145 | seq_printf(m, "EP Ctrl Reg [0x%x]: = [0x%x]\n", i, tmp_reg); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2146 | } |
| 2147 | tmp_reg = fsl_readl(&dr_regs->endpointprime); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2148 | seq_printf(m, "EP Prime Reg = [0x%x]\n\n", tmp_reg); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2149 | |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2150 | #ifndef CONFIG_ARCH_MXC |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2151 | if (udc->pdata->have_sysif_regs) { |
| 2152 | tmp_reg = usb_sys_regs->snoop1; |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2153 | seq_printf(m, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2154 | |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2155 | tmp_reg = usb_sys_regs->control; |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2156 | seq_printf(m, "General Control Reg : = [0x%x]\n\n", tmp_reg); |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2157 | } |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2158 | #endif |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2159 | |
| 2160 | /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */ |
| 2161 | ep = &udc->eps[0]; |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2162 | seq_printf(m, "For %s Maxpkt is 0x%x index is 0x%x\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2163 | ep->ep.name, ep_maxpacket(ep), ep_index(ep)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2164 | |
| 2165 | if (list_empty(&ep->queue)) { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2166 | seq_puts(m, "its req queue is empty\n\n"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2167 | } else { |
| 2168 | list_for_each_entry(req, &ep->queue, queue) { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2169 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2170 | "req %p actual 0x%x length 0x%x buf %p\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2171 | &req->req, req->req.actual, |
| 2172 | req->req.length, req->req.buf); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2173 | } |
| 2174 | } |
| 2175 | /* other gadget->eplist ep */ |
| 2176 | list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { |
Ido Shayevitz | 79149b8 | 2012-03-12 20:25:29 +0200 | [diff] [blame] | 2177 | if (ep->ep.desc) { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2178 | seq_printf(m, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2179 | "\nFor %s Maxpkt is 0x%x " |
| 2180 | "index is 0x%x\n", |
| 2181 | ep->ep.name, ep_maxpacket(ep), |
| 2182 | ep_index(ep)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2183 | |
| 2184 | if (list_empty(&ep->queue)) { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2185 | seq_puts(m, "its req queue is empty\n\n"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2186 | } else { |
| 2187 | list_for_each_entry(req, &ep->queue, queue) { |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2188 | seq_printf(m, |
Will Newton | 9d9d88c | 2008-08-12 15:39:11 +0100 | [diff] [blame] | 2189 | "req %p actual 0x%x length " |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2190 | "0x%x buf %p\n", |
| 2191 | &req->req, req->req.actual, |
| 2192 | req->req.length, req->req.buf); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2193 | } /* end for each_entry of ep req */ |
| 2194 | } /* end for else */ |
| 2195 | } /* end for if(ep->queue) */ |
| 2196 | } /* end (ep->desc) */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2197 | |
| 2198 | spin_unlock_irqrestore(&udc->lock, flags); |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2199 | return 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2200 | } |
| 2201 | |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2202 | /* |
| 2203 | * seq_file wrappers for procfile show routines. |
| 2204 | */ |
| 2205 | static int fsl_proc_open(struct inode *inode, struct file *file) |
| 2206 | { |
| 2207 | return single_open(file, fsl_proc_read, NULL); |
| 2208 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2209 | |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2210 | static const struct file_operations fsl_proc_fops = { |
| 2211 | .open = fsl_proc_open, |
| 2212 | .read = seq_read, |
| 2213 | .llseek = seq_lseek, |
Al Viro | 962a1ab | 2013-05-05 00:16:11 -0400 | [diff] [blame] | 2214 | .release = single_release, |
David Howells | 77cd02c | 2013-04-10 13:23:50 +0100 | [diff] [blame] | 2215 | }; |
| 2216 | |
| 2217 | #define create_proc_file() proc_create(proc_filename, 0, NULL, &fsl_proc_fops) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2218 | #define remove_proc_file() remove_proc_entry(proc_filename, NULL) |
| 2219 | |
| 2220 | #else /* !CONFIG_USB_GADGET_DEBUG_FILES */ |
| 2221 | |
| 2222 | #define create_proc_file() do {} while (0) |
| 2223 | #define remove_proc_file() do {} while (0) |
| 2224 | |
| 2225 | #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ |
| 2226 | |
| 2227 | /*-------------------------------------------------------------------------*/ |
| 2228 | |
| 2229 | /* Release udc structures */ |
| 2230 | static void fsl_udc_release(struct device *dev) |
| 2231 | { |
| 2232 | complete(udc_controller->done); |
Anton Vorontsov | 37c4fd8 | 2009-10-29 19:50:43 +0300 | [diff] [blame] | 2233 | dma_free_coherent(dev->parent, udc_controller->ep_qh_size, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2234 | udc_controller->ep_qh, udc_controller->ep_qh_dma); |
| 2235 | kfree(udc_controller); |
| 2236 | } |
| 2237 | |
| 2238 | /****************************************************************** |
| 2239 | Internal structure setup functions |
| 2240 | *******************************************************************/ |
| 2241 | /*------------------------------------------------------------------ |
| 2242 | * init resource for globle controller |
| 2243 | * Return the udc handle on success or NULL on failure |
| 2244 | ------------------------------------------------------------------*/ |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2245 | static int __init struct_udc_setup(struct fsl_udc *udc, |
| 2246 | struct platform_device *pdev) |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2247 | { |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2248 | struct fsl_usb2_platform_data *pdata; |
| 2249 | size_t size; |
| 2250 | |
Jingoo Han | e01ee9f | 2013-07-30 17:00:51 +0900 | [diff] [blame] | 2251 | pdata = dev_get_platdata(&pdev->dev); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2252 | udc->phy_mode = pdata->phy_mode; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2253 | |
| 2254 | udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); |
| 2255 | if (!udc->eps) { |
| 2256 | ERR("malloc fsl_ep failed\n"); |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2257 | return -1; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2258 | } |
| 2259 | |
| 2260 | /* initialized QHs, take care of alignment */ |
| 2261 | size = udc->max_ep * sizeof(struct ep_queue_head); |
| 2262 | if (size < QH_ALIGNMENT) |
| 2263 | size = QH_ALIGNMENT; |
| 2264 | else if ((size % QH_ALIGNMENT) != 0) { |
| 2265 | size += QH_ALIGNMENT + 1; |
| 2266 | size &= ~(QH_ALIGNMENT - 1); |
| 2267 | } |
| 2268 | udc->ep_qh = dma_alloc_coherent(&pdev->dev, size, |
| 2269 | &udc->ep_qh_dma, GFP_KERNEL); |
| 2270 | if (!udc->ep_qh) { |
| 2271 | ERR("malloc QHs for udc failed\n"); |
| 2272 | kfree(udc->eps); |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2273 | return -1; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2274 | } |
| 2275 | |
| 2276 | udc->ep_qh_size = size; |
| 2277 | |
| 2278 | /* Initialize ep0 status request structure */ |
| 2279 | /* FIXME: fsl_alloc_request() ignores ep argument */ |
| 2280 | udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL), |
| 2281 | struct fsl_req, req); |
| 2282 | /* allocate a small amount of memory to get valid address */ |
| 2283 | udc->status_req->req.buf = kmalloc(8, GFP_KERNEL); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2284 | |
| 2285 | udc->resume_state = USB_STATE_NOTATTACHED; |
| 2286 | udc->usb_state = USB_STATE_POWERED; |
| 2287 | udc->ep0_dir = 0; |
| 2288 | udc->remote_wakeup = 0; /* default to 0 on reset */ |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2289 | |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2290 | return 0; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2291 | } |
| 2292 | |
| 2293 | /*---------------------------------------------------------------- |
| 2294 | * Setup the fsl_ep struct for eps |
| 2295 | * Link fsl_ep->ep to gadget->ep_list |
| 2296 | * ep0out is not used so do nothing here |
| 2297 | * ep0in should be taken care |
| 2298 | *--------------------------------------------------------------*/ |
| 2299 | static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index, |
| 2300 | char *name, int link) |
| 2301 | { |
| 2302 | struct fsl_ep *ep = &udc->eps[index]; |
| 2303 | |
| 2304 | ep->udc = udc; |
| 2305 | strcpy(ep->name, name); |
| 2306 | ep->ep.name = ep->name; |
| 2307 | |
| 2308 | ep->ep.ops = &fsl_ep_ops; |
| 2309 | ep->stopped = 0; |
| 2310 | |
| 2311 | /* for ep0: maxP defined in desc |
| 2312 | * for other eps, maxP is set by epautoconfig() called by gadget layer |
| 2313 | */ |
| 2314 | ep->ep.maxpacket = (unsigned short) ~0; |
| 2315 | |
| 2316 | /* the queue lists any req for this ep */ |
| 2317 | INIT_LIST_HEAD(&ep->queue); |
| 2318 | |
| 2319 | /* gagdet.ep_list used for ep_autoconfig so no ep0 */ |
| 2320 | if (link) |
| 2321 | list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); |
| 2322 | ep->gadget = &udc->gadget; |
| 2323 | ep->qh = &udc->ep_qh[index]; |
| 2324 | |
| 2325 | return 0; |
| 2326 | } |
| 2327 | |
| 2328 | /* Driver probe function |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2329 | * all intialization operations implemented here except enabling usb_intr reg |
| 2330 | * board setup should have been done in the platform code |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2331 | */ |
| 2332 | static int __init fsl_udc_probe(struct platform_device *pdev) |
| 2333 | { |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 2334 | struct fsl_usb2_platform_data *pdata; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2335 | struct resource *res; |
| 2336 | int ret = -ENODEV; |
| 2337 | unsigned int i; |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2338 | u32 dccparams; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2339 | |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2340 | udc_controller = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL); |
| 2341 | if (udc_controller == NULL) { |
| 2342 | ERR("malloc udc failed\n"); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2343 | return -ENOMEM; |
| 2344 | } |
| 2345 | |
Jingoo Han | e01ee9f | 2013-07-30 17:00:51 +0900 | [diff] [blame] | 2346 | pdata = dev_get_platdata(&pdev->dev); |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 2347 | udc_controller->pdata = pdata; |
Will Newton | e06da9a | 2008-08-12 15:39:12 +0100 | [diff] [blame] | 2348 | spin_lock_init(&udc_controller->lock); |
| 2349 | udc_controller->stopped = 1; |
| 2350 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2351 | #ifdef CONFIG_USB_OTG |
| 2352 | if (pdata->operating_mode == FSL_USB2_DR_OTG) { |
Kishon Vijay Abraham I | 662dca5 | 2012-06-22 17:02:46 +0530 | [diff] [blame] | 2353 | udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 2354 | if (IS_ERR_OR_NULL(udc_controller->transceiver)) { |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2355 | ERR("Can't find OTG driver!\n"); |
| 2356 | ret = -ENODEV; |
| 2357 | goto err_kfree; |
| 2358 | } |
| 2359 | } |
| 2360 | #endif |
| 2361 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2362 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2363 | if (!res) { |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2364 | ret = -ENXIO; |
| 2365 | goto err_kfree; |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2366 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2367 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2368 | if (pdata->operating_mode == FSL_USB2_DR_DEVICE) { |
Joe Perches | 28f65c11 | 2011-06-09 09:13:32 -0700 | [diff] [blame] | 2369 | if (!request_mem_region(res->start, resource_size(res), |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2370 | driver_name)) { |
| 2371 | ERR("request mem region for %s failed\n", pdev->name); |
| 2372 | ret = -EBUSY; |
| 2373 | goto err_kfree; |
| 2374 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2375 | } |
| 2376 | |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2377 | dr_regs = ioremap(res->start, resource_size(res)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2378 | if (!dr_regs) { |
| 2379 | ret = -ENOMEM; |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2380 | goto err_release_mem_region; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2381 | } |
| 2382 | |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2383 | pdata->regs = (void *)dr_regs; |
| 2384 | |
| 2385 | /* |
| 2386 | * do platform specific init: check the clock, grab/config pins, etc. |
| 2387 | */ |
| 2388 | if (pdata->init && pdata->init(pdev)) { |
| 2389 | ret = -ENODEV; |
| 2390 | goto err_iounmap_noclk; |
| 2391 | } |
| 2392 | |
| 2393 | /* Set accessors only after pdata->init() ! */ |
Anatolij Gustschin | 3140d5b | 2011-06-25 23:37:29 +0200 | [diff] [blame] | 2394 | fsl_set_accessors(pdata); |
Anatolij Gustschin | 09ba0de | 2011-04-18 22:01:57 +0200 | [diff] [blame] | 2395 | |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2396 | #ifndef CONFIG_ARCH_MXC |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2397 | if (pdata->have_sysif_regs) |
Shaohui Xie | 8981d76 | 2011-11-07 16:58:20 +0800 | [diff] [blame] | 2398 | usb_sys_regs = (void *)dr_regs + USB_DR_SYS_OFFSET; |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2399 | #endif |
| 2400 | |
| 2401 | /* Initialize USB clocks */ |
| 2402 | ret = fsl_udc_clk_init(pdev); |
| 2403 | if (ret < 0) |
| 2404 | goto err_iounmap_noclk; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2405 | |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2406 | /* Read Device Controller Capability Parameters register */ |
| 2407 | dccparams = fsl_readl(&dr_regs->dccparams); |
| 2408 | if (!(dccparams & DCCPARAMS_DC)) { |
| 2409 | ERR("This SOC doesn't support device role\n"); |
| 2410 | ret = -ENODEV; |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2411 | goto err_iounmap; |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2412 | } |
| 2413 | /* Get max device endpoints */ |
| 2414 | /* DEN is bidirectional ep number, max_ep doubles the number */ |
| 2415 | udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2; |
| 2416 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2417 | udc_controller->irq = platform_get_irq(pdev, 0); |
| 2418 | if (!udc_controller->irq) { |
| 2419 | ret = -ENODEV; |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2420 | goto err_iounmap; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2421 | } |
| 2422 | |
Li Yang | 37b5453 | 2007-06-07 16:07:18 +0800 | [diff] [blame] | 2423 | ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2424 | driver_name, udc_controller); |
| 2425 | if (ret != 0) { |
Will Newton | bf7409a | 2008-08-12 15:39:10 +0100 | [diff] [blame] | 2426 | ERR("cannot request irq %d err %d\n", |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2427 | udc_controller->irq, ret); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2428 | goto err_iounmap; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2429 | } |
| 2430 | |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2431 | /* Initialize the udc structure including QH member and other member */ |
| 2432 | if (struct_udc_setup(udc_controller, pdev)) { |
| 2433 | ERR("Can't initialize udc data structure\n"); |
| 2434 | ret = -ENOMEM; |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2435 | goto err_free_irq; |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2436 | } |
| 2437 | |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 2438 | if (IS_ERR_OR_NULL(udc_controller->transceiver)) { |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2439 | /* initialize usb hw reg except for regs for EP, |
| 2440 | * leave usbintr reg untouched */ |
| 2441 | dr_controller_setup(udc_controller); |
| 2442 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2443 | |
Peter Chen | c2c9caa | 2013-01-17 18:03:16 +0800 | [diff] [blame] | 2444 | ret = fsl_udc_clk_finalize(pdev); |
| 2445 | if (ret) |
| 2446 | goto err_free_irq; |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2447 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2448 | /* Setup gadget structure */ |
| 2449 | udc_controller->gadget.ops = &fsl_gadget_ops; |
Michal Nazarewicz | d327ab5 | 2011-11-19 18:27:37 +0100 | [diff] [blame] | 2450 | udc_controller->gadget.max_speed = USB_SPEED_HIGH; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2451 | udc_controller->gadget.ep0 = &udc_controller->eps[0].ep; |
| 2452 | INIT_LIST_HEAD(&udc_controller->gadget.ep_list); |
| 2453 | udc_controller->gadget.speed = USB_SPEED_UNKNOWN; |
| 2454 | udc_controller->gadget.name = driver_name; |
| 2455 | |
| 2456 | /* Setup gadget.dev and register with kernel */ |
Kay Sievers | 0031a06 | 2008-05-02 06:02:41 +0200 | [diff] [blame] | 2457 | dev_set_name(&udc_controller->gadget.dev, "gadget"); |
Alexandre Pereira da Silva | cb4baf1 | 2012-06-26 11:27:11 -0300 | [diff] [blame] | 2458 | udc_controller->gadget.dev.of_node = pdev->dev.of_node; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2459 | |
Kishon Vijay Abraham I | ded017e | 2012-06-26 17:40:32 +0530 | [diff] [blame] | 2460 | if (!IS_ERR_OR_NULL(udc_controller->transceiver)) |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2461 | udc_controller->gadget.is_otg = 1; |
| 2462 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2463 | /* setup QH and epctrl for ep0 */ |
| 2464 | ep0_setup(udc_controller); |
| 2465 | |
| 2466 | /* setup udc->eps[] for ep0 */ |
| 2467 | struct_ep_setup(udc_controller, 0, "ep0", 0); |
| 2468 | /* for ep0: the desc defined here; |
| 2469 | * for other eps, gadget layer called ep_enable with defined desc |
| 2470 | */ |
Christoph Fritz | 80e91fd | 2012-06-04 17:24:03 +0200 | [diff] [blame] | 2471 | udc_controller->eps[0].ep.desc = &fsl_ep0_desc; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2472 | udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD; |
| 2473 | |
| 2474 | /* setup the udc->eps[] for non-control endpoints and link |
| 2475 | * to gadget.ep_list */ |
| 2476 | for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) { |
| 2477 | char name[14]; |
| 2478 | |
| 2479 | sprintf(name, "ep%dout", i); |
| 2480 | struct_ep_setup(udc_controller, i * 2, name, 1); |
| 2481 | sprintf(name, "ep%din", i); |
| 2482 | struct_ep_setup(udc_controller, i * 2 + 1, name, 1); |
| 2483 | } |
| 2484 | |
| 2485 | /* use dma_pool for TD management */ |
| 2486 | udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev, |
| 2487 | sizeof(struct ep_td_struct), |
| 2488 | DTD_ALIGNMENT, UDC_DMA_BOUNDARY); |
| 2489 | if (udc_controller->td_pool == NULL) { |
| 2490 | ret = -ENOMEM; |
Felipe Balbi | eab35c4 | 2013-01-24 16:13:20 +0200 | [diff] [blame] | 2491 | goto err_free_irq; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2492 | } |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 2493 | |
Felipe Balbi | 0e4d65e | 2013-02-26 15:15:26 +0200 | [diff] [blame] | 2494 | ret = usb_add_gadget_udc_release(&pdev->dev, &udc_controller->gadget, |
| 2495 | fsl_udc_release); |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 2496 | if (ret) |
| 2497 | goto err_del_udc; |
| 2498 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2499 | create_proc_file(); |
| 2500 | return 0; |
| 2501 | |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 2502 | err_del_udc: |
| 2503 | dma_pool_destroy(udc_controller->td_pool); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2504 | err_free_irq: |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2505 | free_irq(udc_controller->irq, udc_controller); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2506 | err_iounmap: |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2507 | if (pdata->exit) |
| 2508 | pdata->exit(pdev); |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2509 | fsl_udc_clk_release(); |
| 2510 | err_iounmap_noclk: |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2511 | iounmap(dr_regs); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2512 | err_release_mem_region: |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2513 | if (pdata->operating_mode == FSL_USB2_DR_DEVICE) |
Joe Perches | 28f65c11 | 2011-06-09 09:13:32 -0700 | [diff] [blame] | 2514 | release_mem_region(res->start, resource_size(res)); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2515 | err_kfree: |
Li Yang | 4365831 | 2007-06-06 21:13:44 -0700 | [diff] [blame] | 2516 | kfree(udc_controller); |
Will Newton | 23d7cd0 | 2008-08-12 15:39:17 +0100 | [diff] [blame] | 2517 | udc_controller = NULL; |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2518 | return ret; |
| 2519 | } |
| 2520 | |
| 2521 | /* Driver removal function |
| 2522 | * Free resources and finish pending transactions |
| 2523 | */ |
| 2524 | static int __exit fsl_udc_remove(struct platform_device *pdev) |
| 2525 | { |
| 2526 | struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Jingoo Han | e01ee9f | 2013-07-30 17:00:51 +0900 | [diff] [blame] | 2527 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2528 | |
| 2529 | DECLARE_COMPLETION(done); |
| 2530 | |
| 2531 | if (!udc_controller) |
| 2532 | return -ENODEV; |
Sebastian Andrzej Siewior | 0f91349 | 2011-06-28 16:33:47 +0300 | [diff] [blame] | 2533 | |
| 2534 | usb_del_gadget_udc(&udc_controller->gadget); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2535 | udc_controller->done = &done; |
| 2536 | |
Guennadi Liakhovetski | 54e4026b | 2009-04-15 14:25:33 +0200 | [diff] [blame] | 2537 | fsl_udc_clk_release(); |
| 2538 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2539 | /* DR has been stopped in usb_gadget_unregister_driver() */ |
| 2540 | remove_proc_file(); |
| 2541 | |
| 2542 | /* Free allocated memory */ |
| 2543 | kfree(udc_controller->status_req->req.buf); |
| 2544 | kfree(udc_controller->status_req); |
| 2545 | kfree(udc_controller->eps); |
| 2546 | |
| 2547 | dma_pool_destroy(udc_controller->td_pool); |
| 2548 | free_irq(udc_controller->irq, udc_controller); |
| 2549 | iounmap(dr_regs); |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2550 | if (pdata->operating_mode == FSL_USB2_DR_DEVICE) |
Joe Perches | 28f65c11 | 2011-06-09 09:13:32 -0700 | [diff] [blame] | 2551 | release_mem_region(res->start, resource_size(res)); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2552 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2553 | /* free udc --wait for the release() finished */ |
| 2554 | wait_for_completion(&done); |
| 2555 | |
Anatolij Gustschin | 2ea6698 | 2011-04-18 22:01:58 +0200 | [diff] [blame] | 2556 | /* |
| 2557 | * do platform specific un-initialization: |
| 2558 | * release iomux pins, etc. |
| 2559 | */ |
| 2560 | if (pdata->exit) |
| 2561 | pdata->exit(pdev); |
| 2562 | |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2563 | return 0; |
| 2564 | } |
| 2565 | |
| 2566 | /*----------------------------------------------------------------- |
| 2567 | * Modify Power management attributes |
| 2568 | * Used by OTG statemachine to disable gadget temporarily |
| 2569 | -----------------------------------------------------------------*/ |
| 2570 | static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state) |
| 2571 | { |
| 2572 | dr_controller_stop(udc_controller); |
| 2573 | return 0; |
| 2574 | } |
| 2575 | |
| 2576 | /*----------------------------------------------------------------- |
| 2577 | * Invoked on USB resume. May be called in_interrupt. |
| 2578 | * Here we start the DR controller and enable the irq |
| 2579 | *-----------------------------------------------------------------*/ |
| 2580 | static int fsl_udc_resume(struct platform_device *pdev) |
| 2581 | { |
| 2582 | /* Enable DR irq reg and set controller Run */ |
| 2583 | if (udc_controller->stopped) { |
| 2584 | dr_controller_setup(udc_controller); |
| 2585 | dr_controller_run(udc_controller); |
| 2586 | } |
| 2587 | udc_controller->usb_state = USB_STATE_ATTACHED; |
| 2588 | udc_controller->ep0_state = WAIT_FOR_SETUP; |
| 2589 | udc_controller->ep0_dir = 0; |
| 2590 | return 0; |
| 2591 | } |
| 2592 | |
Anatolij Gustschin | 83722bc | 2011-04-18 22:02:00 +0200 | [diff] [blame] | 2593 | static int fsl_udc_otg_suspend(struct device *dev, pm_message_t state) |
| 2594 | { |
| 2595 | struct fsl_udc *udc = udc_controller; |
| 2596 | u32 mode, usbcmd; |
| 2597 | |
| 2598 | mode = fsl_readl(&dr_regs->usbmode) & USB_MODE_CTRL_MODE_MASK; |
| 2599 | |
| 2600 | pr_debug("%s(): mode 0x%x stopped %d\n", __func__, mode, udc->stopped); |
| 2601 | |
| 2602 | /* |
| 2603 | * If the controller is already stopped, then this must be a |
| 2604 | * PM suspend. Remember this fact, so that we will leave the |
| 2605 | * controller stopped at PM resume time. |
| 2606 | */ |
| 2607 | if (udc->stopped) { |
| 2608 | pr_debug("gadget already stopped, leaving early\n"); |
| 2609 | udc->already_stopped = 1; |
| 2610 | return 0; |
| 2611 | } |
| 2612 | |
| 2613 | if (mode != USB_MODE_CTRL_MODE_DEVICE) { |
| 2614 | pr_debug("gadget not in device mode, leaving early\n"); |
| 2615 | return 0; |
| 2616 | } |
| 2617 | |
| 2618 | /* stop the controller */ |
| 2619 | usbcmd = fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP; |
| 2620 | fsl_writel(usbcmd, &dr_regs->usbcmd); |
| 2621 | |
| 2622 | udc->stopped = 1; |
| 2623 | |
| 2624 | pr_info("USB Gadget suspended\n"); |
| 2625 | |
| 2626 | return 0; |
| 2627 | } |
| 2628 | |
| 2629 | static int fsl_udc_otg_resume(struct device *dev) |
| 2630 | { |
| 2631 | pr_debug("%s(): stopped %d already_stopped %d\n", __func__, |
| 2632 | udc_controller->stopped, udc_controller->already_stopped); |
| 2633 | |
| 2634 | /* |
| 2635 | * If the controller was stopped at suspend time, then |
| 2636 | * don't resume it now. |
| 2637 | */ |
| 2638 | if (udc_controller->already_stopped) { |
| 2639 | udc_controller->already_stopped = 0; |
| 2640 | pr_debug("gadget was already stopped, leaving early\n"); |
| 2641 | return 0; |
| 2642 | } |
| 2643 | |
| 2644 | pr_info("USB Gadget resume\n"); |
| 2645 | |
| 2646 | return fsl_udc_resume(NULL); |
| 2647 | } |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2648 | /*------------------------------------------------------------------------- |
| 2649 | Register entry point for the peripheral controller driver |
| 2650 | --------------------------------------------------------------------------*/ |
Peter Chen | f0ea883 | 2013-01-17 18:03:15 +0800 | [diff] [blame] | 2651 | static const struct platform_device_id fsl_udc_devtype[] = { |
| 2652 | { |
| 2653 | .name = "imx-udc-mx27", |
| 2654 | }, { |
| 2655 | .name = "imx-udc-mx51", |
| 2656 | }, { |
| 2657 | /* sentinel */ |
| 2658 | } |
| 2659 | }; |
| 2660 | MODULE_DEVICE_TABLE(platform, fsl_udc_devtype); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2661 | static struct platform_driver udc_driver = { |
Peter Chen | f0ea883 | 2013-01-17 18:03:15 +0800 | [diff] [blame] | 2662 | .remove = __exit_p(fsl_udc_remove), |
| 2663 | /* Just for FSL i.mx SoC currently */ |
| 2664 | .id_table = fsl_udc_devtype, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2665 | /* these suspend and resume are not usb suspend and resume */ |
Peter Chen | f0ea883 | 2013-01-17 18:03:15 +0800 | [diff] [blame] | 2666 | .suspend = fsl_udc_suspend, |
| 2667 | .resume = fsl_udc_resume, |
| 2668 | .driver = { |
| 2669 | .name = (char *)driver_name, |
| 2670 | .owner = THIS_MODULE, |
| 2671 | /* udc suspend/resume called from OTG driver */ |
| 2672 | .suspend = fsl_udc_otg_suspend, |
| 2673 | .resume = fsl_udc_otg_resume, |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2674 | }, |
| 2675 | }; |
| 2676 | |
Sachin Kamat | d25ab3e | 2013-03-05 09:42:15 +0530 | [diff] [blame] | 2677 | module_platform_driver_probe(udc_driver, fsl_udc_probe); |
Li Yang | b504882 | 2007-04-23 10:54:25 -0700 | [diff] [blame] | 2678 | |
| 2679 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 2680 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 2681 | MODULE_LICENSE("GPL"); |
Kay Sievers | f34c32f | 2008-04-10 21:29:21 -0700 | [diff] [blame] | 2682 | MODULE_ALIAS("platform:fsl-usb2-udc"); |