From: Magnus Damm Date: Fri, 6 Jun 2014 10:44:17 +0000 (+0900) Subject: staging: emxx_udc: Add Emma Mobile USB Gadget driver X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=33aa8d45a4fea3dc5d90338aad0867a66e0c38d5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git staging: emxx_udc: Add Emma Mobile USB Gadget driver Add the emxx_udc driver to staging based on an old linux-2.6.35.7 android tree. The driver has been brushed up slightly to complile but it is still in great need of cleanup. At this point DT bindings are clearly lacking and I doubt that the driver even can run with multiple instances (global variables, hurray!). Signed-off-by: Magnus Damm Acked-by: Simon Horman Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 4f38fc000a37..a511efc1b3c7 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -90,6 +90,8 @@ source "drivers/staging/tidspbridge/Kconfig" source "drivers/staging/quickstart/Kconfig" +source "drivers/staging/emxx_udc/Kconfig" + source "drivers/staging/keucr/Kconfig" source "drivers/staging/bcm/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 1e97ad2177de..e5039056266d 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -39,6 +39,7 @@ obj-$(CONFIG_CXT1E1) += cxt1e1/ obj-$(CONFIG_FB_XGI) += xgifb/ obj-$(CONFIG_TIDSPBRIDGE) += tidspbridge/ obj-$(CONFIG_ACPI_QUICKSTART) += quickstart/ +obj-$(CONFIG_USB_EMXX) += emxx_udc/ obj-$(CONFIG_USB_ENESTORAGE) += keucr/ obj-$(CONFIG_BCM_WIMAX) += bcm/ obj-$(CONFIG_FT1000) += ft1000/ diff --git a/drivers/staging/emxx_udc/Kconfig b/drivers/staging/emxx_udc/Kconfig new file mode 100644 index 000000000000..9bc6d3db86d9 --- /dev/null +++ b/drivers/staging/emxx_udc/Kconfig @@ -0,0 +1,10 @@ +config USB_EMXX + boolean "EMXX USB Function Device Controller" + depends on USB_GADGET && (ARCH_SHMOBILE || (ARM && COMPILE_TEST)) + help + The Emma Mobile series of SoCs from Renesas Electronics and + former NEC Electronics include USB Function hardware. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "emxx_udc" and force all + gadget drivers to also be dynamically linked. diff --git a/drivers/staging/emxx_udc/Makefile b/drivers/staging/emxx_udc/Makefile new file mode 100644 index 000000000000..6352724c0b57 --- /dev/null +++ b/drivers/staging/emxx_udc/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_USB_EMXX) := emxx_udc.o diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c new file mode 100644 index 000000000000..b89c4115e570 --- /dev/null +++ b/drivers/staging/emxx_udc/emxx_udc.c @@ -0,0 +1,3559 @@ +/* + * drivers/usb/gadget/emxx_udc.c + * EMXX FCD (Function Controller Driver) for USB. + * + * Copyright (C) 2010 Renesas Electronics Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#include "emxx_udc.h" + +#define DRIVER_DESC "EMXX UDC driver" +#define DMA_ADDR_INVALID (~(dma_addr_t)0) + +static const char driver_name[] = "emxx_udc"; +static const char driver_desc[] = DRIVER_DESC; + +/*===========================================================================*/ +/* Prototype */ +static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *, struct nbu2ss_ep *); +static void _nbu2ss_ep0_enable(struct nbu2ss_udc *); +/*static void _nbu2ss_ep0_disable(struct nbu2ss_udc *);*/ +static void _nbu2ss_ep_done(struct nbu2ss_ep *, struct nbu2ss_req *, int); +static void _nbu2ss_set_test_mode(struct nbu2ss_udc *, u32 mode); +static void _nbu2ss_endpoint_toggle_reset(struct nbu2ss_udc *udc, u8 ep_adrs); + +static int _nbu2ss_pullup(struct nbu2ss_udc *, int); +static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *); + +/*===========================================================================*/ +/* Macro */ +#define _nbu2ss_zero_len_pkt(udc, epnum) \ + _nbu2ss_ep_in_end(udc, epnum, 0, 0) + + +/*===========================================================================*/ +/* Global */ +struct nbu2ss_udc udc_controller; + + +/*-------------------------------------------------------------------------*/ +/* Read */ +static inline u32 _nbu2ss_readl(void *address) +{ + return __raw_readl(address) ; +} + +/*-------------------------------------------------------------------------*/ +/* Write */ +static inline void _nbu2ss_writel(void *address, u32 udata) +{ + __raw_writel(udata, address) ; +} + +/*-------------------------------------------------------------------------*/ +/* Set Bit */ +static inline void _nbu2ss_bitset(void *address, u32 udata) +{ + u32 reg_dt = __raw_readl(address) | (udata); + __raw_writel(reg_dt, address) ; +} + +/*-------------------------------------------------------------------------*/ +/* Clear Bit */ +static inline void _nbu2ss_bitclr(void *address, u32 udata) +{ + u32 reg_dt = __raw_readl(address) & ~(udata); + __raw_writel(reg_dt, address) ; +} + +#ifdef UDC_DEBUG_DUMP +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_dump_register(struct nbu2ss_udc *udc) +{ + int i; + u32 reg_data; + + pr_info("=== %s()\n", __func__); + + if (udc == NULL) { + ERR("%s udc == NULL\n", __func__); + return; + } + + spin_unlock(&udc->lock); + + printk(KERN_DEBUG "\n-USB REG-\n"); + for (i = 0x0 ; i < USB_BASE_SIZE ; i += 16) { + reg_data = _nbu2ss_readl( + (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i)); + printk(KERN_DEBUG "USB%04x =%08x", i, (int)reg_data); + + reg_data = _nbu2ss_readl( + (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 4)); + printk(KERN_DEBUG " %08x", (int)reg_data); + + reg_data = _nbu2ss_readl( + (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 8)); + printk(KERN_DEBUG " %08x", (int)reg_data); + + reg_data = _nbu2ss_readl( + (u32 *)IO_ADDRESS(USB_BASE_ADDRESS + i + 12)); + printk(KERN_DEBUG " %08x\n", (int)reg_data); + + } + + spin_lock(&udc->lock); +} +#endif /* UDC_DEBUG_DUMP */ + +/*-------------------------------------------------------------------------*/ +/* Endpoint 0 Callback (Complete) */ +static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req) +{ + u8 recipient; + u16 selector; + u32 test_mode; + struct usb_ctrlrequest *p_ctrl; + struct nbu2ss_udc *udc; + + if ((_ep == NULL) || (_req == NULL)) + return; + + udc = (struct nbu2ss_udc *)_req->context; + p_ctrl = &udc->ctrl; + if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + + if (p_ctrl->bRequest == USB_REQ_SET_FEATURE) { + /*-------------------------------------------------*/ + /* SET_FEATURE */ + recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK); + selector = p_ctrl->wValue; + if ((recipient == USB_RECIP_DEVICE) && + (selector == USB_DEVICE_TEST_MODE)) { + test_mode = (u32)(p_ctrl->wIndex >> 8); + _nbu2ss_set_test_mode(udc, test_mode); + } + } + } +} + +/*-------------------------------------------------------------------------*/ +/* Initialization usb_request */ +static void _nbu2ss_create_ep0_packet( + struct nbu2ss_udc *udc, + void *p_buf, + unsigned length +) +{ + udc->ep0_req.req.buf = p_buf; + udc->ep0_req.req.length = length; + udc->ep0_req.req.dma = 0; + udc->ep0_req.req.zero = TRUE; + udc->ep0_req.req.complete = _nbu2ss_ep0_complete; + udc->ep0_req.req.status = -EINPROGRESS; + udc->ep0_req.req.context = udc; + udc->ep0_req.req.actual = 0; +} + +/*-------------------------------------------------------------------------*/ +/* Acquisition of the first address of RAM(FIFO) */ +static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc) +{ + u32 num, buf_type; + u32 data, last_ram_adr, use_ram_size; + + PT_EP_REGS p_ep_regs; + + last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2; + use_ram_size = 0; + + for (num = 0; num < NUM_ENDPOINTS - 1; num++) { + p_ep_regs = &udc->p_regs->EP_REGS[num]; + data = _nbu2ss_readl(&p_ep_regs->EP_PCKT_ADRS); + buf_type = _nbu2ss_readl(&p_ep_regs->EP_CONTROL) & EPn_BUF_TYPE; + if (buf_type == 0) { + /* Single Buffer */ + use_ram_size += (data & EPn_MPKT) / sizeof(u32); + } else { + /* Double Buffer */ + use_ram_size += ((data & EPn_MPKT) / sizeof(u32)) * 2; + } + + if ((data >> 16) > last_ram_adr) + last_ram_adr = data>>16; + } + + return last_ram_adr + use_ram_size; +} + +/*-------------------------------------------------------------------------*/ +/* Construction of Endpoint */ +static int _nbu2ss_ep_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + u32 num; + u32 data; + u32 begin_adrs; + + if (ep->epnum == 0) + return -EINVAL; + + num = ep->epnum - 1; + + /*-------------------------------------------------------------*/ + /* RAM Transfer Address */ + begin_adrs = _nbu2ss_get_begin_ram_address(udc); + data = (begin_adrs << 16) | ep->ep.maxpacket; + _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, data); + + /*-------------------------------------------------------------*/ + /* Interrupt Enable */ + data = 1 << (ep->epnum + 8); + _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, data); + + /*-------------------------------------------------------------*/ + /* Endpoint Type(Mode) */ + /* Bulk, Interrupt, ISO */ + switch (ep->ep_type) { + case USB_ENDPOINT_XFER_BULK: + data = EPn_BULK; + break; + + case USB_ENDPOINT_XFER_INT: + data = EPn_BUF_SINGLE | EPn_INTERRUPT; + break; + + case USB_ENDPOINT_XFER_ISOC: + data = EPn_ISO; + break; + + default: + data = 0; + break; + } + + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + _nbu2ss_endpoint_toggle_reset(udc, (ep->epnum|ep->direct)); + + if (ep->direct == USB_DIR_OUT) { + /*---------------------------------------------------------*/ + /* OUT */ + data = EPn_EN | EPn_BCLR | EPn_DIR0; + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = (EPn_ONAK | EPn_OSTL_EN | EPn_OSTL); + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = (EPn_OUT_EN | EPn_OUT_END_EN); + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); + } else { + /*---------------------------------------------------------*/ + /* IN */ + data = (EPn_EN | EPn_BCLR | EPn_AUTO); + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = (EPn_ISTL); + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = (EPn_IN_EN | EPn_IN_END_EN); + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +/* Release of Endpoint */ +static int _nbu2ss_epn_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + u32 num; + u32 data; + + if ((ep->epnum == 0) || (udc->vbus_active == 0)) + return -EINVAL; + + num = ep->epnum - 1; + + /*-------------------------------------------------------------*/ + /* RAM Transfer Address */ + _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_PCKT_ADRS, 0); + + /*-------------------------------------------------------------*/ + /* Interrupt Disable */ + data = 1 << (ep->epnum + 8); + _nbu2ss_bitclr(&udc->p_regs->USB_INT_ENA, data); + + if (ep->direct == USB_DIR_OUT) { + /*---------------------------------------------------------*/ + /* OUT */ + data = EPn_ONAK | EPn_BCLR; + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = EPn_EN | EPn_DIR0; + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = EPn_OUT_EN | EPn_OUT_END_EN; + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); + } else { + /*---------------------------------------------------------*/ + /* IN */ + data = EPn_BCLR; + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = EPn_EN | EPn_AUTO; + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); + + data = EPn_IN_EN | EPn_IN_END_EN; + _nbu2ss_bitclr(&udc->p_regs->EP_REGS[num].EP_INT_ENA, data); + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +/* DMA setting (without Endpoint 0) */ +static void _nbu2ss_ep_dma_init(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + u32 num; + u32 data; + + data = _nbu2ss_readl(&udc->p_regs->USBSSCONF); + if (((ep->epnum == 0) || (data & (1 << ep->epnum)) == 0)) + return; /* Not Support DMA */ + + num = ep->epnum - 1; + + if (ep->direct == USB_DIR_OUT) { + /*---------------------------------------------------------*/ + /* OUT */ + data = ep->ep.maxpacket; + _nbu2ss_writel(&udc->p_regs->EP_DCR[num].EP_DCR2, data); + + /*---------------------------------------------------------*/ + /* Transfer Direct */ + data = DCR1_EPn_DIR0; + _nbu2ss_bitset(&udc->p_regs->EP_DCR[num].EP_DCR1, data); + + /*---------------------------------------------------------*/ + /* DMA Mode etc. */ + data = EPn_STOP_MODE | EPn_STOP_SET | EPn_DMAMODE0; + _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); + } else { + /*---------------------------------------------------------*/ + /* IN */ + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, EPn_AUTO); + + /*---------------------------------------------------------*/ + /* DMA Mode etc. */ + data = EPn_BURST_SET | EPn_DMAMODE0; + _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_DMA_CTRL, data); + } +} + +/*-------------------------------------------------------------------------*/ +/* DMA setting release */ +static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + u32 num; + u32 data; + PT_FC_REGS preg = udc->p_regs; + + if (udc->vbus_active == 0) + return; /* VBUS OFF */ + + data = _nbu2ss_readl(&preg->USBSSCONF); + if ((ep->epnum == 0) || ((data & (1 << ep->epnum)) == 0)) + return; /* Not Support DMA */ + + num = ep->epnum - 1; + + _nbu2ss_ep_dma_abort(udc, ep); + + if (ep->direct == USB_DIR_OUT) { + /*---------------------------------------------------------*/ + /* OUT */ + _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, 0); + _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_DIR0); + _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); + } else { + /*---------------------------------------------------------*/ + /* IN */ + _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); + _nbu2ss_writel(&preg->EP_REGS[num].EP_DMA_CTRL, 0); + } +} + +/*-------------------------------------------------------------------------*/ +/* Abort DMA */ +static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + PT_FC_REGS preg = udc->p_regs; + + _nbu2ss_bitclr(&preg->EP_DCR[ep->epnum-1].EP_DCR1, DCR1_EPn_REQEN); + mdelay(DMA_DISABLE_TIME); /* DCR1_EPn_REQEN Clear */ + _nbu2ss_bitclr(&preg->EP_REGS[ep->epnum-1].EP_DMA_CTRL, EPn_DMA_EN); +} + +/*-------------------------------------------------------------------------*/ +/* Start IN Transfer */ +static void _nbu2ss_ep_in_end( + struct nbu2ss_udc *udc, + u32 epnum, + u32 data32, + u32 length +) +{ + u32 data; + u32 num; + PT_FC_REGS preg = udc->p_regs; + + if (length >= sizeof(u32)) + return; + + if (epnum == 0) { + _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_AUTO); + + /* Writing of 1-4 bytes */ + if (length) + _nbu2ss_writel(&preg->EP0_WRITE, data32); + + data = ((length << 5) & EP0_DW) | EP0_DEND; + _nbu2ss_writel(&preg->EP0_CONTROL, data); + + _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_AUTO); + } else { + num = epnum - 1; + + _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); + + /* Writing of 1-4 bytes */ + if (length) + _nbu2ss_writel(&preg->EP_REGS[num].EP_WRITE, data32); + + data = (((((u32)length) << 5) & EPn_DW) | EPn_DEND); + _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); + + _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, EPn_AUTO); + } + + return; +} + +#ifdef USE_DMA +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_dma_map_single( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u8 direct +) +{ + if (req->req.dma == DMA_ADDR_INVALID) { + if (req->unaligned) + req->req.dma = ep->phys_buf; + else { + req->req.dma = dma_map_single( + udc->gadget.dev.parent, + req->req.buf, + req->req.length, + (direct == USB_DIR_IN) + ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + } + req->mapped = 1; + } else { + if (!req->unaligned) + dma_sync_single_for_device( + udc->gadget.dev.parent, + req->req.dma, + req->req.length, + (direct == USB_DIR_IN) + ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + + req->mapped = 0; + } +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_dma_unmap_single( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u8 direct +) +{ + u8 data[4]; + u8 *p; + u32 count = 0; + + if (direct == USB_DIR_OUT) { + count = req->req.actual % 4; + if (count) { + p = req->req.buf; + p += (req->req.actual - count); + memcpy(data, p, count); + } + } + + if (req->mapped) { + if (req->unaligned) { + if (direct == USB_DIR_OUT) + memcpy(req->req.buf, ep->virt_buf, + req->req.actual & 0xfffffffc); + } else + dma_unmap_single(udc->gadget.dev.parent, + req->req.dma, req->req.length, + (direct == USB_DIR_IN) + ? DMA_TO_DEVICE + : DMA_FROM_DEVICE); + req->req.dma = DMA_ADDR_INVALID; + req->mapped = 0; + } else { + if (!req->unaligned) + dma_sync_single_for_cpu(udc->gadget.dev.parent, + req->req.dma, req->req.length, + (direct == USB_DIR_IN) + ? DMA_TO_DEVICE + : DMA_FROM_DEVICE); + } + + if (count) { + p = req->req.buf; + p += (req->req.actual - count); + memcpy(p, data, count); + } +} +#endif + +/*-------------------------------------------------------------------------*/ +/* Endpoint 0 OUT Transfer (PIO) */ +static int EP0_out_PIO(struct nbu2ss_udc *udc, u8* pBuf, u32 length) +{ + u32 i; + int nret = 0; + u32 iWordLength = 0; + USB_REG_ACCESS* pBuf32 = (USB_REG_ACCESS *)pBuf; + + /*------------------------------------------------------------*/ + /* Read Length */ + iWordLength = length / sizeof(u32); + + /*------------------------------------------------------------*/ + /* PIO Read */ + if (iWordLength) { + for (i = 0; i < iWordLength; i++) { + pBuf32->dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); + pBuf32++; + } + nret = iWordLength * sizeof(u32); + } + + return nret; +} + +/*-------------------------------------------------------------------------*/ +/* Endpoint 0 OUT Transfer (PIO, OverBytes) */ +static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8* pBuf, u32 length) +{ + u32 i; + u32 iReadSize = 0; + USB_REG_ACCESS Temp32; + USB_REG_ACCESS* pBuf32 = (USB_REG_ACCESS *)pBuf; + + if ((0 < length) && (length < sizeof(u32))) { + Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ); + for (i = 0 ; i < length ; i++) + pBuf32->byte.DATA[i] = Temp32.byte.DATA[i]; + iReadSize += length; + } + + return iReadSize; +} + +/*-------------------------------------------------------------------------*/ +/* Endpoint 0 IN Transfer (PIO) */ +static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length) +{ + u32 i; + u32 iMaxLength = EP0_PACKETSIZE; + u32 iWordLength = 0; + u32 iWriteLength = 0; + USB_REG_ACCESS* pBuf32 = (USB_REG_ACCESS *)pBuf; + + /*------------------------------------------------------------*/ + /* Transfer Length */ + if (iMaxLength < length) + iWordLength = iMaxLength / sizeof(u32); + else + iWordLength = length / sizeof(u32); + + /*------------------------------------------------------------*/ + /* PIO */ + for (i = 0; i < iWordLength; i++) { + _nbu2ss_writel(&udc->p_regs->EP0_WRITE, pBuf32->dw); + pBuf32++; + iWriteLength += sizeof(u32); + } + + return iWriteLength; +} + +/*-------------------------------------------------------------------------*/ +/* Endpoint 0 IN Transfer (PIO, OverBytes) */ +static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize) +{ + u32 i; + USB_REG_ACCESS Temp32; + USB_REG_ACCESS* pBuf32 = (USB_REG_ACCESS *)pBuf; + + if ((0 < iRemainSize) && (iRemainSize < sizeof(u32))) { + for (i = 0 ; i < iRemainSize ; i++) + Temp32.byte.DATA[i] = pBuf32->byte.DATA[i]; + _nbu2ss_ep_in_end(udc, 0, Temp32.dw, iRemainSize); + + return iRemainSize; + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +/* Transfer NULL Packet (Epndoint 0) */ +static int EP0_send_NULL(struct nbu2ss_udc *udc, bool pid_flag) +{ + u32 data; + + data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); + data &= ~(u32)EP0_INAK; + + if (pid_flag) + data |= (EP0_INAK_EN | EP0_PIDCLR | EP0_DEND); + else + data |= (EP0_INAK_EN | EP0_DEND); + + _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +/* Receive NULL Packet (Endpoint 0) */ +static int EP0_receive_NULL(struct nbu2ss_udc *udc, bool pid_flag) +{ + u32 data; + + data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); + data &= ~(u32)EP0_ONAK; + + if (pid_flag) + data |= EP0_PIDCLR; + + _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_ep0_in_transfer( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req +) +{ + u8 *pBuffer; /* IN Data Buffer */ + u32 data; + u32 iRemainSize = 0; + int result = 0; + + /*-------------------------------------------------------------*/ + /* End confirmation */ + if (req->req.actual == req->req.length) { + if ((req->req.actual % EP0_PACKETSIZE) == 0) { + if (req->zero) { + req->zero = 0; + EP0_send_NULL(udc, FALSE); + return 1; + } + } + + return 0; /* Transfer End */ + } + + /*-------------------------------------------------------------*/ + /* NAK release */ + data = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); + data |= EP0_INAK_EN; + data &= ~(u32)EP0_INAK; + _nbu2ss_writel(&udc->p_regs->EP0_CONTROL, data); + + iRemainSize = req->req.length - req->req.actual; + pBuffer = (u8 *)req->req.buf; + pBuffer += req->req.actual; + + /*-------------------------------------------------------------*/ + /* Data transfer */ + result = EP0_in_PIO(udc, pBuffer, iRemainSize); + + req->div_len = result; + iRemainSize -= result; + + if (iRemainSize == 0) { + EP0_send_NULL(udc, FALSE); + return result; + } + + if ((iRemainSize < sizeof(u32)) && (result != EP0_PACKETSIZE)) { + pBuffer += result; + result += EP0_in_OverBytes(udc, pBuffer, iRemainSize); + req->div_len = result; + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_ep0_out_transfer( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req +) +{ + u8 *pBuffer; + u32 iRemainSize; + u32 iRecvLength; + int result = 0; + int fRcvZero; + + /*-------------------------------------------------------------*/ + /* Receive data confirmation */ + iRecvLength = _nbu2ss_readl(&udc->p_regs->EP0_LENGTH) & EP0_LDATA; + if (iRecvLength != 0) { + + fRcvZero = 0; + + iRemainSize = req->req.length - req->req.actual; + pBuffer = (u8 *)req->req.buf; + pBuffer += req->req.actual; + + result = EP0_out_PIO(udc, pBuffer + , min(iRemainSize, iRecvLength)); + if (result < 0) + return result; + + req->req.actual += result; + iRecvLength -= result; + + if ((0 < iRecvLength) && (iRecvLength < sizeof(u32))) { + pBuffer += result; + iRemainSize -= result; + + result = EP0_out_OverBytes(udc, pBuffer + , min(iRemainSize, iRecvLength)); + req->req.actual += result; + } + } else { + fRcvZero = 1; + } + + /*-------------------------------------------------------------*/ + /* End confirmation */ + if (req->req.actual == req->req.length) { + if ((req->req.actual % EP0_PACKETSIZE) == 0) { + if (req->zero) { + req->zero = 0; + EP0_receive_NULL(udc, FALSE); + return 1; + } + } + + return 0; /* Transfer End */ + } + + if ((req->req.actual % EP0_PACKETSIZE) != 0) + return 0; /* Short Packet Transfer End */ + + if (req->req.actual > req->req.length) { + ERR(" *** Overrun Error\n"); + return -EOVERFLOW; + } + + if (fRcvZero != 0) { + iRemainSize = _nbu2ss_readl(&udc->p_regs->EP0_CONTROL); + if (iRemainSize & EP0_ONAK) { + /*---------------------------------------------------*/ + /* NACK release */ + _nbu2ss_bitclr(&udc->p_regs->EP0_CONTROL, EP0_ONAK); + } + result = 1; + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_out_dma( + struct nbu2ss_udc *udc, + struct nbu2ss_req *req, + u32 num, + u32 length +) +{ + u8 *pBuffer; + u32 mpkt; + u32 lmpkt; + u32 dmacnt; + u32 burst = 1; + u32 data; + int result = -EINVAL; + PT_FC_REGS preg = udc->p_regs; + + if (req->dma_flag) + return 1; /* DMA is forwarded */ + + req->dma_flag = TRUE; + pBuffer = (u8 *)req->req.dma; + pBuffer += req->req.actual; + + /* DMA Address */ + _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer); + + /* Number of transfer packets */ + mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT; + dmacnt = (length / mpkt); + lmpkt = (length % mpkt) & ~(u32)0x03; + + if (DMA_MAX_COUNT < dmacnt) { + dmacnt = DMA_MAX_COUNT; + lmpkt = 0; + } else if (0 != lmpkt) { + if (0 == dmacnt) + burst = 0; /* Burst OFF */ + dmacnt++; + } + + data = mpkt | (lmpkt << 16); + _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); + + data = ((dmacnt & 0xff) << 16) | DCR1_EPn_DIR0 | DCR1_EPn_REQEN; + _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); + + if (0 == burst) { + _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, 0); + _nbu2ss_bitclr(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET); + } else { + _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT + , (dmacnt << 16)); + _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_BURST_SET); + } + _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN); + + result = length & ~(u32)0x03; + req->div_len = result; + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_out_pio( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u32 length +) +{ + u8 *pBuffer; + u32 i; + u32 data; + u32 iWordLength; + USB_REG_ACCESS Temp32; + USB_REG_ACCESS *pBuf32; + int result = 0; + PT_FC_REGS preg = udc->p_regs; + + if (req->dma_flag) + return 1; /* DMA is forwarded */ + + if (length == 0) + return 0; + + pBuffer = (u8 *)req->req.buf; + pBuf32 = (USB_REG_ACCESS *)(pBuffer + req->req.actual); + + iWordLength = length / sizeof(u32); + if (iWordLength > 0) { + /*---------------------------------------------------------*/ + /* Copy of every four bytes */ + for (i = 0; i < iWordLength; i++) { + pBuf32->dw = + _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ); + pBuf32++; + } + result = iWordLength * sizeof(u32); + } + + data = length - result; + if (data > 0) { + /*---------------------------------------------------------*/ + /* Copy of fraction byte */ + Temp32.dw = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_READ); + for (i = 0 ; i < data ; i++) + pBuf32->byte.DATA[i] = Temp32.byte.DATA[i]; + result += data; + } + + req->req.actual += result; + + if ((req->req.actual == req->req.length) + || ((req->req.actual % ep->ep.maxpacket) != 0)) { + + result = 0; + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_out_data( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u32 data_size +) +{ + u32 num; + u32 iBufSize; + int nret = 1; + + if (ep->epnum == 0) + return -EINVAL; + + num = ep->epnum - 1; + + iBufSize = min((req->req.length - req->req.actual), data_size); + + if ((ep->ep_type != USB_ENDPOINT_XFER_INT) + && (req->req.dma != 0) + && (iBufSize >= sizeof(u32))) { + nret = _nbu2ss_out_dma(udc, req, num, iBufSize); + } else { + iBufSize = min(iBufSize, (u32)ep->ep.maxpacket); + nret = _nbu2ss_epn_out_pio(udc, ep, req, iBufSize); + } + + return nret; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_out_transfer( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req +) +{ + u32 num; + u32 iRecvLength; + int result = 1; + PT_FC_REGS preg = udc->p_regs; + + if (ep->epnum == 0) + return -EINVAL; + + num = ep->epnum - 1; + + /*-------------------------------------------------------------*/ + /* Receive Length */ + iRecvLength + = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) & EPn_LDATA; + + if (iRecvLength != 0) { + result = _nbu2ss_epn_out_data(udc, ep, req, iRecvLength); + if (iRecvLength < ep->ep.maxpacket) { + if (iRecvLength == result) { + req->req.actual += result; + result = 0; + } + } + } else { + if ((req->req.actual == req->req.length) + || ((req->req.actual % ep->ep.maxpacket) != 0)) { + + result = 0; + } + } + + if (result == 0) { + if ((req->req.actual % ep->ep.maxpacket) == 0) { + if (req->zero) { + req->zero = 0; + return 1; + } + } + } + + if (req->req.actual > req->req.length) { + ERR(" *** Overrun Error\n"); + ERR(" *** actual = %d, length = %d\n", + req->req.actual, req->req.length); + result = -EOVERFLOW; + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_in_dma( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u32 num, + u32 length +) +{ + u8 *pBuffer; + u32 mpkt; /* MaxPacketSize */ + u32 lmpkt; /* Last Packet Data Size */ + u32 dmacnt; /* IN Data Size */ + u32 iWriteLength; + u32 data; + int result = -EINVAL; + PT_FC_REGS preg = udc->p_regs; + + if (req->dma_flag) + return 1; /* DMA is forwarded */ + +#ifdef USE_DMA + if (req->req.actual == 0) + _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_IN); +#endif + req->dma_flag = TRUE; + + /* MAX Packet Size */ + mpkt = _nbu2ss_readl(&preg->EP_REGS[num].EP_PCKT_ADRS) & EPn_MPKT; + + if ((DMA_MAX_COUNT * mpkt) < length) + iWriteLength = DMA_MAX_COUNT * mpkt; + else + iWriteLength = length; + + /*------------------------------------------------------------*/ + /* Number of transmission packets */ + if (mpkt < iWriteLength) { + dmacnt = iWriteLength / mpkt; + lmpkt = (iWriteLength % mpkt) & ~(u32)0x3; + if (lmpkt != 0) + dmacnt++; + else + lmpkt = mpkt & ~(u32)0x3; + + } else { + dmacnt = 1; + lmpkt = iWriteLength & ~(u32)0x3; + } + + /* Packet setting */ + data = mpkt | (lmpkt << 16); + _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR2, data); + + /* Address setting */ + pBuffer = (u8 *)req->req.dma; + pBuffer += req->req.actual; + _nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer); + + /* Packet and DMA setting */ + data = ((dmacnt & 0xff) << 16) | DCR1_EPn_REQEN; + _nbu2ss_writel(&preg->EP_DCR[num].EP_DCR1, data); + + /* Packet setting of EPC */ + data = dmacnt << 16; + _nbu2ss_writel(&preg->EP_REGS[num].EP_LEN_DCNT, data); + + /*DMA setting of EPC */ + _nbu2ss_bitset(&preg->EP_REGS[num].EP_DMA_CTRL, EPn_DMA_EN); + + result = iWriteLength & ~(u32)0x3; + req->div_len = result; + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_in_pio( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u32 length +) +{ + u8 *pBuffer; + u32 i; + u32 data; + u32 iWordLength; + USB_REG_ACCESS Temp32; + USB_REG_ACCESS *pBuf32 = NULL; + int result = 0; + PT_FC_REGS preg = udc->p_regs; + + if (req->dma_flag) + return 1; /* DMA is forwarded */ + + if (length > 0) { + pBuffer = (u8 *)req->req.buf; + pBuf32 = (USB_REG_ACCESS *)(pBuffer + req->req.actual); + + iWordLength = length / sizeof(u32); + if (iWordLength > 0) { + for (i = 0; i < iWordLength; i++) { + _nbu2ss_writel( + &preg->EP_REGS[ep->epnum-1].EP_WRITE + , pBuf32->dw + ); + + pBuf32++; + } + result = iWordLength * sizeof(u32); + } + } + + if (result != ep->ep.maxpacket) { + data = length - result; + Temp32.dw = 0; + for (i = 0 ; i < data ; i++) + Temp32.byte.DATA[i] = pBuf32->byte.DATA[i]; + + _nbu2ss_ep_in_end(udc, ep->epnum, Temp32.dw, data); + result += data; + } + + req->div_len = result; + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_in_data( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + u32 data_size +) +{ + u32 num; + int nret = 1; + + if (ep->epnum == 0) + return -EINVAL; + + num = ep->epnum - 1; + + if ((ep->ep_type != USB_ENDPOINT_XFER_INT) + && (req->req.dma != 0) + && (data_size >= sizeof(u32))) { + nret = _nbu2ss_in_dma(udc, ep, req, num, data_size); + } else { + data_size = min(data_size, (u32)ep->ep.maxpacket); + nret = _nbu2ss_epn_in_pio(udc, ep, req, data_size); + } + + return nret; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_epn_in_transfer( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req +) +{ + u32 num; + u32 iBufSize; + int result = 0; + u32 status; + + if (ep->epnum == 0) + return -EINVAL; + + num = ep->epnum - 1; + + status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); + + /*-------------------------------------------------------------*/ + /* State confirmation of FIFO */ + if (req->req.actual == 0) { + if ((status & EPn_IN_EMPTY) == 0) + return 1; /* Not Empty */ + + } else { + if ((status & EPn_IN_FULL) != 0) + return 1; /* Not Empty */ + } + + /*-------------------------------------------------------------*/ + /* Start tranfer */ + iBufSize = req->req.length - req->req.actual; + if (iBufSize > 0) + result = _nbu2ss_epn_in_data(udc, ep, req, iBufSize); + else if (req->req.length == 0) + _nbu2ss_zero_len_pkt(udc, ep->epnum); + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_start_transfer( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + bool bflag) +{ + int nret = -EINVAL; + + req->dma_flag = FALSE; + req->div_len = 0; + + if (req->req.length == 0) + req->zero = 0; + else { + if ((req->req.length % ep->ep.maxpacket) == 0) + req->zero = req->req.zero; + else + req->zero = 0; + } + + if (ep->epnum == 0) { + /* EP0 */ + switch (udc->ep0state) { + case EP0_IN_DATA_PHASE: + nret = _nbu2ss_ep0_in_transfer(udc, ep, req); + break; + + case EP0_OUT_DATA_PHASE: + nret = _nbu2ss_ep0_out_transfer(udc, ep, req); + break; + + case EP0_IN_STATUS_PHASE: + nret = EP0_send_NULL(udc, TRUE); + break; + + default: + break; + } + + } else { + /* EPn */ + if (ep->direct == USB_DIR_OUT) { + /* OUT */ + if (bflag == FALSE) + nret = _nbu2ss_epn_out_transfer(udc, ep, req); + } else { + /* IN */ + nret = _nbu2ss_epn_in_transfer(udc, ep, req); + } + } + + return nret; +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_restert_transfer(struct nbu2ss_ep *ep) +{ + u32 length; + bool bflag = FALSE; + struct nbu2ss_req *req; + + if (list_empty(&ep->queue)) + req = NULL; + else + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + + if (req == NULL) + return; + + if (ep->epnum > 0) { + length = _nbu2ss_readl( + &ep->udc->p_regs->EP_REGS[ep->epnum-1].EP_LEN_DCNT); + + length &= EPn_LDATA; + if (length < ep->ep.maxpacket) + bflag = TRUE; + } + + _nbu2ss_start_transfer(ep->udc, ep, req, bflag); +} + +/*-------------------------------------------------------------------------*/ +/* Endpoint Toggle Reset */ +static void _nbu2ss_endpoint_toggle_reset( + struct nbu2ss_udc *udc, + u8 ep_adrs) +{ + u8 num; + u32 data; + + if ((ep_adrs == 0) || (ep_adrs == 0x80)) + return; + + num = (ep_adrs & 0x7F) - 1; + + if (ep_adrs & USB_DIR_IN) + data = EPn_IPIDCLR; + else + data = EPn_BCLR | EPn_OPIDCLR; + + _nbu2ss_bitset(&udc->p_regs->EP_REGS[num].EP_CONTROL, data); +} + +/*-------------------------------------------------------------------------*/ +/* Endpoint STALL set */ +static void _nbu2ss_set_endpoint_stall( + struct nbu2ss_udc *udc, + u8 ep_adrs, + bool bstall) +{ + u8 num, epnum; + u32 data; + struct nbu2ss_ep *ep; + PT_FC_REGS preg = udc->p_regs; + + if ((ep_adrs == 0) || (ep_adrs == 0x80)) { + if (bstall) { + /* Set STALL */ + _nbu2ss_bitset(&preg->EP0_CONTROL, EP0_STL); + } else { + /* Clear STALL */ + _nbu2ss_bitclr(&preg->EP0_CONTROL, EP0_STL); + } + } else { + epnum = ep_adrs & USB_ENDPOINT_NUMBER_MASK; + num = epnum - 1; + ep = &udc->ep[epnum]; + + if (bstall) { + /* Set STALL */ + ep->halted = TRUE; + + if (ep_adrs & USB_DIR_IN) + data = EPn_BCLR | EPn_ISTL; + else + data = EPn_OSTL_EN | EPn_OSTL; + + _nbu2ss_bitset(&preg->EP_REGS[num].EP_CONTROL, data); + } else { + /* Clear STALL */ + ep->stalled = FALSE; + if (ep_adrs & USB_DIR_IN) { + _nbu2ss_bitclr(&preg->EP_REGS[num].EP_CONTROL + , EPn_ISTL); + } else { + data = + _nbu2ss_readl(&preg->EP_REGS[num].EP_CONTROL); + + data &= ~EPn_OSTL; + data |= EPn_OSTL_EN; + + _nbu2ss_writel(&preg->EP_REGS[num].EP_CONTROL + , data); + } + + ep->stalled = FALSE; + if (ep->halted) { + ep->halted = FALSE; + _nbu2ss_restert_transfer(ep); + } + } + } + + return; +} + + +/*-------------------------------------------------------------------------*/ +/* Device Descriptor */ +static struct usb_device_descriptor device_desc = { + .bLength = sizeof(device_desc), + .bDescriptorType = USB_DT_DEVICE, + .bcdUSB = __constant_cpu_to_le16(0x0200), + .bDeviceClass = USB_CLASS_VENDOR_SPEC, + .bDeviceSubClass = 0x00, + .bDeviceProtocol = 0x00, + .bMaxPacketSize0 = 64, + .idVendor = __constant_cpu_to_le16 (0x0409), + .idProduct = __constant_cpu_to_le16 (0xfff0), + .bcdDevice = 0xffff, + .iManufacturer = 0x00, + .iProduct = 0x00, + .iSerialNumber = 0x00, + .bNumConfigurations = 0x01, +}; + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_set_test_mode(struct nbu2ss_udc *udc, u32 mode) +{ + u32 data; + + if (mode > MAX_TEST_MODE_NUM) + return; + + pr_info("SET FEATURE : test mode = %d\n", mode); + + data = _nbu2ss_readl(&udc->p_regs->USB_CONTROL); + data &= ~TEST_FORCE_ENABLE; + data |= mode << TEST_MODE_SHIFT; + + _nbu2ss_writel(&udc->p_regs->USB_CONTROL, data); + _nbu2ss_bitset(&udc->p_regs->TEST_CONTROL, CS_TESTMODEEN); +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_set_feature_device( + struct nbu2ss_udc *udc, + u16 selector, + u16 wIndex +) +{ + int result = -EOPNOTSUPP; + + switch (selector) { + case USB_DEVICE_REMOTE_WAKEUP: + if (0x0000 == wIndex) { + udc->remote_wakeup = U2F_ENABLE; + result = 0; + } + break; + + case USB_DEVICE_TEST_MODE: + wIndex = wIndex >> 8; + if (wIndex <= MAX_TEST_MODE_NUM) + result = 0; + break; + + default: + break; + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs) +{ + u8 epnum; + u32 data = 0, bit_data; + PT_FC_REGS preg = udc->p_regs; + + epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK; + if (epnum == 0) { + data = _nbu2ss_readl(&preg->EP0_CONTROL); + bit_data = EP0_STL; + + } else { + data = _nbu2ss_readl(&preg->EP_REGS[epnum-1].EP_CONTROL); + if ((data & EPn_EN) == 0) + return -1; + + if (ep_adrs & USB_ENDPOINT_DIR_MASK) + bit_data = EPn_ISTL; + else + bit_data = EPn_OSTL; + } + + if ((data & bit_data) == 0) + return 0; + else + return 1; +} + +/*-------------------------------------------------------------------------*/ +static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset) +{ + u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); + u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); + u16 selector = udc->ctrl.wValue; + u16 wIndex = udc->ctrl.wIndex; + u8 ep_adrs; + int result = -EOPNOTSUPP; + + if ((0x0000 != udc->ctrl.wLength) || + (USB_DIR_OUT != direction)) { + return -EINVAL; + } + + switch (recipient) { + case USB_RECIP_DEVICE: + if (bset) + result = + _nbu2ss_set_feature_device(udc, selector, wIndex); + break; + + case USB_RECIP_ENDPOINT: + if (0x0000 == (wIndex & 0xFF70)) { + if (USB_ENDPOINT_HALT == selector) { + ep_adrs = wIndex & 0xFF; + if (bset == FALSE) { + _nbu2ss_endpoint_toggle_reset( + udc, ep_adrs); + } + + _nbu2ss_set_endpoint_stall( + udc, ep_adrs, bset); + + result = 0; + } + } + break; + + default: + break; + } + + if (result >= 0) + _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); + + return result; +} + +/*-------------------------------------------------------------------------*/ +static inline enum usb_device_speed _nbu2ss_get_speed(struct nbu2ss_udc *udc) +{ + u32 data; + enum usb_device_speed speed = USB_SPEED_FULL; + + data = _nbu2ss_readl(&udc->p_regs->USB_STATUS); + if (data & HIGH_SPEED) + speed = USB_SPEED_HIGH; + + return speed; +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_epn_set_stall( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep +) +{ + u8 ep_adrs; + u32 regdata; + int limit_cnt = 0; + + PT_FC_REGS preg = udc->p_regs; + + if (ep->direct == USB_DIR_IN) { + for (limit_cnt = 0 + ; limit_cnt < IN_DATA_EMPTY_COUNT + ; limit_cnt++) { + + regdata = _nbu2ss_readl( + &preg->EP_REGS[ep->epnum-1].EP_STATUS); + + if ((regdata & EPn_IN_DATA) == 0) + break; + + mdelay(1); + } + } + + ep_adrs = ep->epnum | ep->direct; + _nbu2ss_set_endpoint_stall(udc, ep_adrs, 1); +} + +/*-------------------------------------------------------------------------*/ +static int std_req_get_status(struct nbu2ss_udc *udc) +{ + u32 length; + u16 status_data = 0; + u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK); + u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN); + u8 ep_adrs; + int result = -EINVAL; + + if ((0x0000 != udc->ctrl.wValue) + || (USB_DIR_IN != direction)) { + + return result; + } + + length = min(udc->ctrl.wLength, (u16)sizeof(status_data)); + + switch (recipient) { + case USB_RECIP_DEVICE: + if (udc->ctrl.wIndex == 0x0000) { + if (udc->self_powered) + status_data |= (1 << USB_DEVICE_SELF_POWERED); + + if (udc->remote_wakeup) + status_data |= (1 << USB_DEVICE_REMOTE_WAKEUP); + + result = 0; + } + break; + + case USB_RECIP_ENDPOINT: + if (0x0000 == (udc->ctrl.wIndex & 0xFF70)) { + ep_adrs = (u8)(udc->ctrl.wIndex & 0xFF); + result = _nbu2ss_get_ep_stall(udc, ep_adrs); + + if (result > 0) + status_data |= (1 << USB_ENDPOINT_HALT); + } + break; + + default: + break; + } + + if (result >= 0) { + memcpy(udc->ep0_buf, &status_data, length); + _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, length); + _nbu2ss_ep0_in_transfer(udc, &udc->ep[0], &udc->ep0_req); + + } else { + ERR("*** Error GET_STATUS\n"); + } + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int std_req_clear_feature(struct nbu2ss_udc *udc) +{ + return _nbu2ss_req_feature(udc, FALSE); +} + +/*-------------------------------------------------------------------------*/ +static int std_req_set_feature(struct nbu2ss_udc *udc) +{ + return _nbu2ss_req_feature(udc, TRUE); +} + +/*-------------------------------------------------------------------------*/ +static int std_req_set_address(struct nbu2ss_udc *udc) +{ + int result = 0; + u32 wValue = udc->ctrl.wValue; + + if ((0x00 != udc->ctrl.bRequestType) || + (0x0000 != udc->ctrl.wIndex) || + (0x0000 != udc->ctrl.wLength)) { + return -EINVAL; + } + + if (wValue != (wValue & 0x007F)) + return -EINVAL; + + wValue = wValue << USB_ADRS_SHIFT; + + _nbu2ss_writel(&udc->p_regs->USB_ADDRESS, wValue); + _nbu2ss_create_ep0_packet(udc, udc->ep0_buf, 0); + + return result; +} + +/*-------------------------------------------------------------------------*/ +static int std_req_set_configuration(struct nbu2ss_udc *udc) +{ + u32 ConfigValue = (u32)(udc->ctrl.wValue & 0x00ff); + + if ((0x0000 != udc->ctrl.wIndex) || + (0x0000 != udc->ctrl.wLength) || + (0x00 != udc->ctrl.bRequestType)) { + return -EINVAL; + } + + udc->curr_config = ConfigValue; + + if (ConfigValue > 0) { + _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, CONF); + udc->devstate = USB_STATE_CONFIGURED; + + } else { + _nbu2ss_bitclr(&udc->p_regs->USB_CONTROL, CONF); + udc->devstate = USB_STATE_ADDRESS; + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_read_request_data(struct nbu2ss_udc *udc, u32 *pdata) +{ + if ((udc == NULL) && (pdata == NULL)) + return; + + *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA0); + pdata++; + *pdata = _nbu2ss_readl(&udc->p_regs->SETUP_DATA1); +} + +/*-------------------------------------------------------------------------*/ +static inline int _nbu2ss_decode_request(struct nbu2ss_udc *udc) +{ + bool bcall_back = TRUE; + int nret = -EINVAL; + struct usb_ctrlrequest *p_ctrl; + + p_ctrl = &udc->ctrl; + _nbu2ss_read_request_data(udc, (u32 *)p_ctrl); + + /* ep0 state control */ + if (p_ctrl->wLength == 0) { + udc->ep0state = EP0_IN_STATUS_PHASE; + + } else { + if (p_ctrl->bRequestType & USB_DIR_IN) + udc->ep0state = EP0_IN_DATA_PHASE; + else + udc->ep0state = EP0_OUT_DATA_PHASE; + } + + if ((p_ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) { + switch (p_ctrl->bRequest) { + case USB_REQ_GET_STATUS: + nret = std_req_get_status(udc); + bcall_back = FALSE; + break; + + case USB_REQ_CLEAR_FEATURE: + nret = std_req_clear_feature(udc); + bcall_back = FALSE; + break; + + case USB_REQ_SET_FEATURE: + nret = std_req_set_feature(udc); + bcall_back = FALSE; + break; + + case USB_REQ_SET_ADDRESS: + nret = std_req_set_address(udc); + bcall_back = FALSE; + break; + + case USB_REQ_SET_CONFIGURATION: + nret = std_req_set_configuration(udc); + break; + + default: + break; + } + } + + if (bcall_back == FALSE) { + if (udc->ep0state == EP0_IN_STATUS_PHASE) { + if (nret >= 0) { + /*--------------------------------------*/ + /* Status Stage */ + nret = EP0_send_NULL(udc, TRUE); + } + } + + } else { + spin_unlock(&udc->lock); + nret = udc->driver->setup(&udc->gadget, &udc->ctrl); + spin_lock(&udc->lock); + } + + if (nret < 0) + udc->ep0state = EP0_IDLE; + + return nret; +} + +/*-------------------------------------------------------------------------*/ +static inline int _nbu2ss_ep0_in_data_stage(struct nbu2ss_udc *udc) +{ + int nret; + struct nbu2ss_req *req; + struct nbu2ss_ep *ep = &udc->ep[0]; + + if (list_empty(&ep->queue)) + req = NULL; + else + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + + if (req == NULL) + req = &udc->ep0_req; + + req->req.actual += req->div_len; + req->div_len = 0; + + nret = _nbu2ss_ep0_in_transfer(udc, ep, req); + if (nret == 0) { + udc->ep0state = EP0_OUT_STATUS_PAHSE; + EP0_receive_NULL(udc, TRUE); + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static inline int _nbu2ss_ep0_out_data_stage(struct nbu2ss_udc *udc) +{ + int nret; + struct nbu2ss_req *req; + struct nbu2ss_ep *ep = &udc->ep[0]; + + if (list_empty(&ep->queue)) + req = NULL; + else + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + + if (req == NULL) + req = &udc->ep0_req; + + nret = _nbu2ss_ep0_out_transfer(udc, ep, req); + if (nret == 0) { + udc->ep0state = EP0_IN_STATUS_PHASE; + EP0_send_NULL(udc, TRUE); + + } else if (nret < 0) { + _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, EP0_BCLR); + req->req.status = nret; + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static inline int _nbu2ss_ep0_status_stage(struct nbu2ss_udc *udc) +{ + struct nbu2ss_req *req; + struct nbu2ss_ep *ep = &udc->ep[0]; + + if (list_empty(&ep->queue)) + req = NULL; + else + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + + if (req == NULL) { + req = &udc->ep0_req; + if (req->req.complete) + req->req.complete(&ep->ep, &req->req); + + } else { + if (req->req.complete) + _nbu2ss_ep_done(ep, req, 0); + } + + udc->ep0state = EP0_IDLE; + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_ep0_int(struct nbu2ss_udc *udc) +{ + int i; + u32 status; + u32 intr; + int nret = -1; + + status = _nbu2ss_readl(&udc->p_regs->EP0_STATUS); + intr = status & EP0_STATUS_RW_BIT; + _nbu2ss_writel(&udc->p_regs->EP0_STATUS, ~(u32)intr); + + status &= (SETUP_INT | EP0_IN_INT | EP0_OUT_INT + | STG_END_INT | EP0_OUT_NULL_INT); + + if (status == 0) { + pr_info("--- %s Not Decode Interrupt\n", __func__); + pr_info("--- EP0_STATUS = 0x%08x\n", intr); + return; + } + + if (udc->gadget.speed == USB_SPEED_UNKNOWN) + udc->gadget.speed = _nbu2ss_get_speed(udc); + + for (i = 0; i < EP0_END_XFER; i++) { + switch (udc->ep0state) { + case EP0_IDLE: + if (status & SETUP_INT) { + status = 0; + nret = _nbu2ss_decode_request(udc); + } + break; + + case EP0_IN_DATA_PHASE: + if (status & EP0_IN_INT) { + status &= ~EP0_IN_INT; + nret = _nbu2ss_ep0_in_data_stage(udc); + } + break; + + case EP0_OUT_DATA_PHASE: + if (status & EP0_OUT_INT) { + status &= ~EP0_OUT_INT; + nret = _nbu2ss_ep0_out_data_stage(udc); + } + break; + + case EP0_IN_STATUS_PHASE: + if ((status & STG_END_INT) || (status & SETUP_INT)) { + status &= ~(STG_END_INT | EP0_IN_INT); + nret = _nbu2ss_ep0_status_stage(udc); + } + break; + + case EP0_OUT_STATUS_PAHSE: + if ((status & STG_END_INT) + || (status & SETUP_INT) + || (status & EP0_OUT_NULL_INT)) { + status &= ~(STG_END_INT + | EP0_OUT_INT + | EP0_OUT_NULL_INT); + + nret = _nbu2ss_ep0_status_stage(udc); + } + + break; + + default: + status = 0; + break; + } + + if (status == 0) + break; + } + + if (nret < 0) { + /* Send Stall */ + _nbu2ss_set_endpoint_stall(udc, 0, TRUE); + } +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_ep_done( + struct nbu2ss_ep *ep, + struct nbu2ss_req *req, + int status) +{ + struct nbu2ss_udc *udc = ep->udc; + + list_del_init(&req->queue); + + if (status == -ECONNRESET) + _nbu2ss_fifo_flush(udc, ep); + + if (likely(req->req.status == -EINPROGRESS)) + req->req.status = status; + + if (ep->stalled) + _nbu2ss_epn_set_stall(udc, ep); + else { + if (!list_empty(&ep->queue)) + _nbu2ss_restert_transfer(ep); + } + +#ifdef USE_DMA + if ((ep->direct == USB_DIR_OUT) && (ep->epnum > 0) && + (req->req.dma != 0)) + _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_OUT); +#endif + + spin_unlock(&udc->lock); + req->req.complete(&ep->ep, &req->req); + spin_lock(&udc->lock); +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_epn_in_int( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) +{ + int result = 0; + u32 status; + + PT_FC_REGS preg = udc->p_regs; + + if (req->dma_flag) + return; /* DMA is forwarded */ + + req->req.actual += req->div_len; + req->div_len = 0; + + if (req->req.actual != req->req.length) { + /*---------------------------------------------------------*/ + /* remainder of data */ + result = _nbu2ss_epn_in_transfer(udc, ep, req); + + } else { + if ((req->zero != 0) + && ((req->req.actual % ep->ep.maxpacket) == 0)) { + + status = + _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_STATUS); + + if ((status & EPn_IN_FULL) == 0) { + /*-----------------------------------------*/ + /* 0 Length Packet */ + req->zero = 0; + _nbu2ss_zero_len_pkt(udc, ep->epnum); + } + return; + } + } + + if (result <= 0) { + /*---------------------------------------------------------*/ + /* Complete */ + _nbu2ss_ep_done(ep, req, result); + } +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_epn_out_int( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) +{ + int result; + + result = _nbu2ss_epn_out_transfer(udc, ep, req); + if (result <= 0) + _nbu2ss_ep_done(ep, req, result); + + return; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_epn_in_dma_int( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) +{ + u32 mpkt; + u32 size; + struct usb_request *preq; + + preq = &req->req; + + if (req->dma_flag == FALSE) + return; + + preq->actual += req->div_len; + req->div_len = 0; + req->dma_flag = FALSE; + +#ifdef USE_DMA + _nbu2ss_dma_unmap_single(udc, ep, req, USB_DIR_IN); +#endif + + if (preq->actual != preq->length) { + _nbu2ss_epn_in_transfer(udc, ep, req); + } else { + mpkt = ep->ep.maxpacket; + size = preq->actual % mpkt; + if (size > 0) { + if (((preq->actual & 0x03) == 0) && (size < mpkt)) + _nbu2ss_ep_in_end(udc, ep->epnum, 0, 0); + } else { + _nbu2ss_epn_in_int(udc, ep, req); + } + } + + return; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_epn_out_dma_int( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + struct nbu2ss_req *req) +{ + int i; + u32 num; + u32 dmacnt, ep_dmacnt; + u32 mpkt; + PT_FC_REGS preg = udc->p_regs; + + num = ep->epnum - 1; + + if (req->req.actual == req->req.length) { + if ((req->req.length % ep->ep.maxpacket) + && (req->zero == 0)) { + req->div_len = 0; + req->dma_flag = FALSE; + _nbu2ss_ep_done(ep, req, 0); + return; + } + } + + ep_dmacnt = _nbu2ss_readl(&preg->EP_REGS[num].EP_LEN_DCNT) + & EPn_DMACNT; + ep_dmacnt >>= 16; + + for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { + dmacnt = _nbu2ss_readl(&preg->EP_DCR[num].EP_DCR1) + & DCR1_EPn_DMACNT; + dmacnt >>= 16; + if (ep_dmacnt == dmacnt) + break; + } + + _nbu2ss_bitclr(&preg->EP_DCR[num].EP_DCR1, DCR1_EPn_REQEN); + + if (dmacnt != 0) { + mpkt = ep->ep.maxpacket; + if ((req->div_len % mpkt) == 0) + req->div_len -= mpkt * dmacnt; + } + + if ((req->req.actual % ep->ep.maxpacket) > 0) { + if (req->req.actual == req->div_len) { + req->div_len = 0; + req->dma_flag = FALSE; + _nbu2ss_ep_done(ep, req, 0); + return; + } + } + + req->req.actual += req->div_len; + req->div_len = 0; + req->dma_flag = FALSE; + + _nbu2ss_epn_out_int(udc, ep, req); +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_epn_int(struct nbu2ss_udc *udc, u32 epnum) +{ + u32 num; + u32 status; + + struct nbu2ss_req *req; + struct nbu2ss_ep *ep = &udc->ep[epnum]; + + num = epnum - 1; + + /* Interrupt Status */ + status = _nbu2ss_readl(&udc->p_regs->EP_REGS[num].EP_STATUS); + + /* Interrupt Clear */ + _nbu2ss_writel(&udc->p_regs->EP_REGS[num].EP_STATUS, ~(u32)status); + + if (list_empty(&ep->queue)) + req = NULL; + else + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + + if (req == NULL) { + /* pr_warning("=== %s(%d) req == NULL\n", __func__, epnum); */ + return; + } + + if (status & EPn_OUT_END_INT) { + status &= ~EPn_OUT_INT; + _nbu2ss_epn_out_dma_int(udc, ep, req); + } + + if (status & EPn_OUT_INT) + _nbu2ss_epn_out_int(udc, ep, req); + + if (status & EPn_IN_END_INT) { + status &= ~EPn_IN_INT; + _nbu2ss_epn_in_dma_int(udc, ep, req); + } + + if (status & EPn_IN_INT) + _nbu2ss_epn_in_int(udc, ep, req); +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_ep_int(struct nbu2ss_udc *udc, u32 epnum) +{ + if (epnum == 0) + _nbu2ss_ep0_int(udc); + else + _nbu2ss_epn_int(udc, epnum); +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_ep0_enable(struct nbu2ss_udc *udc) +{ + _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL, (EP0_AUTO | EP0_BCLR)); + _nbu2ss_writel(&udc->p_regs->EP0_INT_ENA, EP0_INT_EN_BIT); + + return; +} + +#if 0 +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_ep0_disable(struct nbu2ss_udc *udc) +{ + _nbu2ss_bitclr(&udc->p_regs->EP0_INT_ENA, EP0_INT_EN_BIT); + + _nbu2ss_bitset(&udc->p_regs->EP0_CONTROL + , (EP0_BCLR | EP0_INAK | EP0_ONAK | EP0_BCLR)); + + _nbu2ss_bitclr(&udc->p_regs->EP0_CONTROL, EP0_AUTO); + + return; +} +#endif + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_nuke(struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + int status) +{ + struct nbu2ss_req *req; + + /* Endpoint Disable */ + _nbu2ss_epn_exit(udc, ep); + + /* DMA Disable */ + _nbu2ss_ep_dma_exit(udc, ep); + + if (list_empty(&ep->queue)) + return 0; + + /* called with irqs blocked */ + while (!list_empty(&ep->queue)) { + req = list_entry(ep->queue.next, struct nbu2ss_req, queue); + _nbu2ss_ep_done(ep, req, status); + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_quiesce(struct nbu2ss_udc *udc) +{ + struct nbu2ss_ep *ep; + + udc->gadget.speed = USB_SPEED_UNKNOWN; + + _nbu2ss_nuke(udc, &udc->ep[0], -ESHUTDOWN); + + /* Endpoint n */ + list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { + _nbu2ss_nuke(udc, ep, -ESHUTDOWN); + } +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on) +{ + u32 reg_dt; + + if (!udc) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + if (udc->vbus_active == 0) + return -ESHUTDOWN; + + if (is_on) { + /* D+ Pullup */ +/* INFO(" --- D+ Pullup\n"); */ + + if (udc->driver) { + reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) + | PUE2) & ~(u32)CONNECTB; + + _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); + } + + } else { + /* D+ Pulldown */ +/* INFO(" --- D+ Pulldown\n"); */ + + reg_dt = (_nbu2ss_readl(&udc->p_regs->USB_CONTROL) | CONNECTB) + & ~(u32)PUE2; + + _nbu2ss_writel(&udc->p_regs->USB_CONTROL, reg_dt); + udc->gadget.speed = USB_SPEED_UNKNOWN; + } + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep) +{ + PT_FC_REGS p = udc->p_regs; + + if (udc->vbus_active == 0) + return; + + if (ep->epnum == 0) { + /* EP0 */ + _nbu2ss_bitset(&p->EP0_CONTROL, EP0_BCLR); + + } else { + /* EPn */ + _nbu2ss_ep_dma_abort(udc, ep); + _nbu2ss_bitset(&p->EP_REGS[ep->epnum - 1].EP_CONTROL, EPn_BCLR); + } +} + +/*-------------------------------------------------------------------------*/ +static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc) +{ + int waitcnt = 0; + + if (udc->udc_enabled) + return 0; + +#if 0 + emxx_open_clockgate(EMXX_CLK_USB1); + /* emxx_clkctrl_off(EMXX_CLKCTRL_USB1); */ + /* emxx_clkctrl_on(EMXX_CLKCTRL_USB1); */ + emxx_unreset_device(EMXX_RST_USB1); +#endif + /* + Reset + */ + _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); + udelay(EPC_RST_DISABLE_TIME); /* 1us wait */ + + _nbu2ss_bitclr(&udc->p_regs->EPCTR, DIRPD); + mdelay(EPC_DIRPD_DISABLE_TIME); /* 1ms wait */ + + _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); + + _nbu2ss_writel(&udc->p_regs->AHBSCTR, WAIT_MODE); + +#if 0 + /* DMA Mode Setting */ + if ((system_rev & EMXX_REV_MASK) == EMXX_REV_ES1) { + _nbu2ss_bitset(&udc->p_regs->AHBMCTR, BURST_TYPE); + _nbu2ss_bitclr(&udc->p_regs->AHBMCTR, HTRANS_MODE); + } else +#endif + _nbu2ss_writel(&udc->p_regs->AHBMCTR, + HBUSREQ_MODE | HTRANS_MODE | WBURST_TYPE); + + while (!(_nbu2ss_readl(&udc->p_regs->EPCTR) & PLL_LOCK)) { + waitcnt++; + udelay(1); /* 1us wait */ + if (waitcnt == EPC_PLL_LOCK_COUNT) { + ERR("*** Reset Cancel failed\n"); + return -EINVAL; + } + }; + +#if 0 + if ((system_rev & EMXX_REV_MASK) < EMXX_REV_ES3) +#endif + _nbu2ss_bitset(&udc->p_regs->UTMI_CHARACTER_1, USB_SQUSET); + + _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, (INT_SEL | SOF_RCV)); + + /* EP0 */ + _nbu2ss_ep0_enable(udc); + + /* USB Interrupt Enable */ + _nbu2ss_bitset(&udc->p_regs->USB_INT_ENA, USB_INT_EN_BIT); + + udc->udc_enabled = TRUE; + + return 0; +} + + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_reset_controller(struct nbu2ss_udc *udc) +{ + _nbu2ss_bitset(&udc->p_regs->EPCTR, EPC_RST); + _nbu2ss_bitclr(&udc->p_regs->EPCTR, EPC_RST); +} + +/*-------------------------------------------------------------------------*/ +static void _nbu2ss_disable_controller(struct nbu2ss_udc *udc) +{ + if (udc->udc_enabled) { + udc->udc_enabled = FALSE; + _nbu2ss_reset_controller(udc); + _nbu2ss_bitset(&udc->p_regs->EPCTR, (DIRPD | EPC_RST)); + } +#if 0 + emxx_reset_device(EMXX_RST_USB1); + /* emxx_clkctrl_on(EMXX_CLKCTRL_USB1); */ + emxx_close_clockgate(EMXX_CLK_USB1); +#endif +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_check_vbus(struct nbu2ss_udc *udc) +{ + int nret; + u32 reg_dt; + + /* chattering */ + mdelay(VBUS_CHATTERING_MDELAY); /* wait (ms) */ + + /* VBUS ON Check*/ + reg_dt = gpio_get_value(VBUS_VALUE); + if (reg_dt == 0) { + + udc->linux_suspended = 0; + + _nbu2ss_reset_controller(udc); + pr_info(" ----- VBUS OFF\n"); + + if (udc->vbus_active == 1) { + /* VBUS OFF */ + udc->vbus_active = 0; + if (udc->usb_suspended) { + udc->usb_suspended = 0; + /* _nbu2ss_reset_controller(udc); */ + } + udc->devstate = USB_STATE_NOTATTACHED; + + _nbu2ss_quiesce(udc); + if (udc->driver) { + spin_unlock(&udc->lock); + udc->driver->disconnect(&udc->gadget); + spin_lock(&udc->lock); + } + + _nbu2ss_disable_controller(udc); + } + } else { + mdelay(5); /* wait (5ms) */ + reg_dt = gpio_get_value(VBUS_VALUE); + if (reg_dt == 0) + return; + + pr_info(" ----- VBUS ON\n"); + + if (udc->linux_suspended) + return; + + if (udc->vbus_active == 0) { + /* VBUS ON */ + udc->vbus_active = 1; + udc->devstate = USB_STATE_POWERED; + + nret = _nbu2ss_enable_controller(udc); + if (nret < 0) { + _nbu2ss_disable_controller(udc); + udc->vbus_active = 0; + return; + } + + _nbu2ss_pullup(udc, 1); + +#ifdef UDC_DEBUG_DUMP + _nbu2ss_dump_register(udc); +#endif /* UDC_DEBUG_DUMP */ + + } else { + if (udc->devstate == USB_STATE_POWERED) + _nbu2ss_pullup(udc, 1); + } + } + + return; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_int_bus_reset(struct nbu2ss_udc *udc) +{ + udc->devstate = USB_STATE_DEFAULT; + udc->remote_wakeup = 0; + + _nbu2ss_quiesce(udc); + + udc->ep0state = EP0_IDLE; +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_int_usb_resume(struct nbu2ss_udc *udc) +{ + if (udc->usb_suspended == 1) { + udc->usb_suspended = 0; + if (udc->driver && udc->driver->resume) { + spin_unlock(&udc->lock); + udc->driver->resume(&udc->gadget); + spin_lock(&udc->lock); + } + } +} + +/*-------------------------------------------------------------------------*/ +static inline void _nbu2ss_int_usb_suspend(struct nbu2ss_udc *udc) +{ + u32 reg_dt; + + if (udc->usb_suspended == 0) { + reg_dt = gpio_get_value(VBUS_VALUE); + + if (reg_dt == 0) + return; + + udc->usb_suspended = 1; + if (udc->driver && udc->driver->suspend) { + spin_unlock(&udc->lock); + udc->driver->suspend(&udc->gadget); + spin_lock(&udc->lock); + } + + _nbu2ss_bitset(&udc->p_regs->USB_CONTROL, SUSPEND); + } +} + +/*-------------------------------------------------------------------------*/ +/* VBUS (GPIO153) Interrupt */ +static irqreturn_t _nbu2ss_vbus_irq(int irq, void *_udc) +{ + struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; + + spin_lock(&udc->lock); + _nbu2ss_check_vbus(udc); + spin_unlock(&udc->lock); + + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ +/* Interrupt (udc) */ +static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc) +{ + u8 suspend_flag = 0; + u32 status; + u32 epnum, int_bit; + + struct nbu2ss_udc *udc = (struct nbu2ss_udc *)_udc; + PT_FC_REGS preg = udc->p_regs; + + if (gpio_get_value(VBUS_VALUE) == 0) { + _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); + _nbu2ss_writel(&preg->USB_INT_ENA, 0); + return IRQ_HANDLED; + } + + spin_lock(&udc->lock); + + for (;;) { + if (gpio_get_value(VBUS_VALUE) == 0) { + _nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW); + _nbu2ss_writel(&preg->USB_INT_ENA, 0); + status = 0; + } else + status = _nbu2ss_readl(&preg->USB_INT_STA); + + if (status == 0) + break; + + _nbu2ss_writel(&preg->USB_INT_STA, ~(status & USB_INT_STA_RW)); + + if (status & USB_RST_INT) { + /* USB Reset */ + _nbu2ss_int_bus_reset(udc); + } + + if (status & RSUM_INT) { + /* Resume */ + _nbu2ss_int_usb_resume(udc); + } + + if (status & SPND_INT) { + /* Suspend */ + suspend_flag = 1; + } + + if (status & EPn_INT) { + /* EP INT */ + int_bit = status >> 8; + + for (epnum = 0; epnum < NUM_ENDPOINTS; epnum++) { + + if (0x01 & int_bit) + _nbu2ss_ep_int(udc, epnum); + + int_bit >>= 1; + + if (int_bit == 0) + break; + } + } + } + + if (suspend_flag) + _nbu2ss_int_usb_suspend(udc); + + spin_unlock(&udc->lock); + + return IRQ_HANDLED; +} + +/*-------------------------------------------------------------------------*/ +/* usb_ep_ops */ +static int nbu2ss_ep_enable( + struct usb_ep *_ep, + const struct usb_endpoint_descriptor *desc) +{ + u8 ep_type; + unsigned long flags; + + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + + if ((_ep == NULL) || (desc == NULL)) { + ERR(" *** %s, bad param\n", __func__); + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if ((ep == NULL) || (ep->udc == NULL)) { + ERR(" *** %s, ep == NULL !!\n", __func__); + return -EINVAL; + } + + ep_type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; + if ((ep_type == USB_ENDPOINT_XFER_CONTROL) + || (ep_type == USB_ENDPOINT_XFER_ISOC)) { + + ERR(" *** %s, bat bmAttributes\n", __func__); + return -EINVAL; + } + + udc = ep->udc; + if (udc->vbus_active == 0) + return -ESHUTDOWN; + + if ((udc->driver == NULL) + || (udc->gadget.speed == USB_SPEED_UNKNOWN)) { + + ERR(" *** %s, udc !!\n", __func__); + return -ESHUTDOWN; + } + + spin_lock_irqsave(&udc->lock, flags); + + ep->desc = desc; + ep->epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; + ep->direct = desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK; + ep->ep_type = ep_type; + ep->wedged = 0; + ep->halted = FALSE; + ep->stalled = FALSE; + + ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize); + + /* DMA setting */ + _nbu2ss_ep_dma_init(udc, ep); + + /* Endpoint setting */ + _nbu2ss_ep_init(udc, ep); + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_ep_disable(struct usb_ep *_ep) +{ + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + unsigned long flags; + + if (_ep == NULL) { + ERR(" *** %s, bad param\n", __func__); + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if ((ep == NULL) || (ep->udc == NULL)) { + ERR(" *** %s, ep == NULL !!\n", __func__); + return -EINVAL; + } + + udc = ep->udc; + if (udc->vbus_active == 0) + return -ESHUTDOWN; + + spin_lock_irqsave(&udc->lock, flags); + _nbu2ss_nuke(udc, ep, -EINPROGRESS); /* dequeue request */ + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static struct usb_request *nbu2ss_ep_alloc_request( + struct usb_ep *ep, + gfp_t gfp_flags) +{ + struct nbu2ss_req *req; + + req = kzalloc(sizeof(*req), gfp_flags); + if (!req) + return 0; + +#ifdef USE_DMA + req->req.dma = DMA_ADDR_INVALID; +#endif + INIT_LIST_HEAD(&req->queue); + + return &req->req; +} + +/*-------------------------------------------------------------------------*/ +static void nbu2ss_ep_free_request( + struct usb_ep *_ep, + struct usb_request *_req) +{ + struct nbu2ss_req *req; + + if (_req != NULL) { + req = container_of(_req, struct nbu2ss_req, req); + + if (req != NULL) + kfree(req); + } +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_ep_queue( + struct usb_ep *_ep, + struct usb_request *_req, + gfp_t gfp_flags) +{ + struct nbu2ss_req *req; + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + unsigned long flags; + bool bflag; + int result = -EINVAL; + + /* catch various bogus parameters */ + if ((_ep == NULL) || (_req == NULL)) { + if (_ep == NULL) + ERR("*** %s --- _ep == NULL\n", __func__); + + if (_req == NULL) + ERR("*** %s --- _req == NULL\n", __func__); + + return -EINVAL; + } + + req = container_of(_req, struct nbu2ss_req, req); + if (unlikely + (!_req->complete || !_req->buf + || !list_empty(&req->queue))) { + + if (!_req->complete) + ERR("*** %s --- !_req->complete\n", __func__); + + if (!_req->buf) + ERR("*** %s --- !_req->buf\n", __func__); + + if (!list_empty(&req->queue)) + ERR("*** %s --- !list_empty(&req->queue)\n", __func__); + + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + udc = ep->udc; + +/* INFO("=== %s(ep%d), zero=%d\n", __func__, ep->epnum, _req->zero); */ + + if (udc->vbus_active == 0) { + pr_info("Can't ep_queue (VBUS OFF)\n"); + return -ESHUTDOWN; + } + + if (unlikely(!udc->driver)) { + ERR("%s, bogus device state %p\n", __func__, udc->driver); + return -ESHUTDOWN; + } + + spin_lock_irqsave(&udc->lock, flags); + +#ifdef USE_DMA + if ((u32)req->req.buf & 0x3) + req->unaligned = TRUE; + else + req->unaligned = FALSE; + + if (req->unaligned) { + if (ep->virt_buf == NULL) + ep->virt_buf = (u8 *)dma_alloc_coherent( + NULL, PAGE_SIZE, + &ep->phys_buf, GFP_KERNEL | GFP_DMA); + if (ep->epnum > 0) { + if (ep->direct == USB_DIR_IN) + memcpy(ep->virt_buf, req->req.buf, + req->req.length); + } + } + + if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT) && + (req->req.dma != 0)) + _nbu2ss_dma_map_single(udc, ep, req, USB_DIR_OUT); +#endif + + _req->status = -EINPROGRESS; + _req->actual = 0; + + bflag = list_empty(&ep->queue); + list_add_tail(&req->queue, &ep->queue); + + if ((bflag != FALSE) && (ep->stalled == FALSE)) { + + result = _nbu2ss_start_transfer(udc, ep, req, FALSE); + if (result < 0) { + ERR(" *** %s, result = %d\n", __func__, result); + list_del(&req->queue); + } else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) { +#ifdef USE_DMA + if (req->req.length < 4 && + req->req.length == req->req.actual) +#else + if (req->req.length == req->req.actual) +#endif + _nbu2ss_ep_done(ep, req, result); + } + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_ep_dequeue( + struct usb_ep *_ep, + struct usb_request *_req) +{ + struct nbu2ss_req *req; + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + unsigned long flags; + + /*INFO("=== %s()\n", __func__);*/ + + /* catch various bogus parameters */ + if ((_ep == NULL) || (_req == NULL)) { + /* ERR("%s, bad param(1)\n", __func__); */ + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if (!ep) { + ERR("%s, ep == NULL !!\n", __func__); + return -EINVAL; + } + + udc = ep->udc; + if (udc == NULL) + return -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + + /* make sure it's actually queued on this endpoint */ + list_for_each_entry(req, &ep->queue, queue) { + if (&req->req == _req) + break; + } + if (&req->req != _req) { + spin_unlock_irqrestore(&udc->lock, flags); + pr_debug("%s no queue(EINVAL)\n", __func__); + return -EINVAL; + } + + _nbu2ss_ep_done(ep, req, -ECONNRESET); + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value) +{ + u8 ep_adrs; + unsigned long flags; + + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + +/* INFO("=== %s()\n", __func__); */ + + if (!_ep) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if (!ep) { + ERR("%s, bad ep\n", __func__); + return -EINVAL; + } + + udc = ep->udc; + if (!udc) { + ERR(" *** %s, bad udc\n", __func__); + return -EINVAL; + } + + spin_lock_irqsave(&udc->lock, flags); + + ep_adrs = ep->epnum | ep->direct; + if (value == 0) { + _nbu2ss_set_endpoint_stall(udc, ep_adrs, value); + ep->stalled = FALSE; + } else { + if (list_empty(&ep->queue)) + _nbu2ss_epn_set_stall(udc, ep); + else + ep->stalled = TRUE; + } + + if (value == 0) + ep->wedged = 0; + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +static int nbu2ss_ep_set_wedge(struct usb_ep *_ep) +{ + return nbu2ss_ep_set_halt(_ep, 1); +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_ep_fifo_status(struct usb_ep *_ep) +{ + u32 data; + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + unsigned long flags; + PT_FC_REGS preg; + +/* INFO("=== %s()\n", __func__); */ + + if (!_ep) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if (!ep) { + ERR("%s, bad ep\n", __func__); + return -EINVAL; + } + + udc = ep->udc; + if (!udc) { + ERR("%s, bad udc\n", __func__); + return -EINVAL; + } + + preg = udc->p_regs; + + data = gpio_get_value(VBUS_VALUE); + if (data == 0) + return -EINVAL; + + spin_lock_irqsave(&udc->lock, flags); + + if (ep->epnum == 0) { + data = _nbu2ss_readl(&preg->EP0_LENGTH) & EP0_LDATA; + + } else { + data = _nbu2ss_readl(&preg->EP_REGS[ep->epnum-1].EP_LEN_DCNT) + & EPn_LDATA; + } + + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static void nbu2ss_ep_fifo_flush(struct usb_ep *_ep) +{ + u32 data; + struct nbu2ss_ep *ep; + struct nbu2ss_udc *udc; + unsigned long flags; + +/* INFO("=== %s()\n", __func__); */ + + if (!_ep) { + ERR("%s, bad param\n", __func__); + return; + } + + ep = container_of(_ep, struct nbu2ss_ep, ep); + if (!_ep) { + ERR("%s, bad ep\n", __func__); + return; + } + + udc = ep->udc; + if (!udc) { + ERR("%s, bad udc\n", __func__); + return; + } + + data = gpio_get_value(VBUS_VALUE); + if (data == 0) + return; + + spin_lock_irqsave(&udc->lock, flags); + _nbu2ss_fifo_flush(udc, ep); + spin_unlock_irqrestore(&udc->lock, flags); +} + +/*-------------------------------------------------------------------------*/ +static struct usb_ep_ops nbu2ss_ep_ops = { + .enable = nbu2ss_ep_enable, + .disable = nbu2ss_ep_disable, + + .alloc_request = nbu2ss_ep_alloc_request, + .free_request = nbu2ss_ep_free_request, + + .queue = nbu2ss_ep_queue, + .dequeue = nbu2ss_ep_dequeue, + + .set_halt = nbu2ss_ep_set_halt, + .set_wedge = nbu2ss_ep_set_wedge, + + .fifo_status = nbu2ss_ep_fifo_status, + .fifo_flush = nbu2ss_ep_fifo_flush, +}; + + +/*-------------------------------------------------------------------------*/ +/* usb_gadget_ops */ + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget) +{ + u32 data; + struct nbu2ss_udc *udc; + +/* INFO("=== %s()\n", __func__); */ + + if (pgadget == NULL) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + udc = container_of(pgadget, struct nbu2ss_udc, gadget); + if (udc == NULL) { + ERR("%s, udc == NULL\n", __func__); + return -EINVAL; + } + + data = gpio_get_value(VBUS_VALUE); + if (data == 0) + return -EINVAL; + + data = _nbu2ss_readl(&udc->p_regs->USB_ADDRESS) & FRAME; + + return data; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget) +{ + int i; + u32 data; + + struct nbu2ss_udc *udc; + +/* INFO("=== %s()\n", __func__); */ + + if (pgadget == NULL) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + udc = container_of(pgadget, struct nbu2ss_udc, gadget); + if (udc == NULL) { + ERR("%s, udc == NULL\n", __func__); + return -EINVAL; + } + + data = gpio_get_value(VBUS_VALUE); + if (data == 0) { + pr_warning("VBUS LEVEL = %d\n", data); + return -EINVAL; + } + + _nbu2ss_bitset(&udc->p_regs->EPCTR, PLL_RESUME); + + for (i = 0; i < EPC_PLL_LOCK_COUNT; i++) { + data = _nbu2ss_readl(&udc->p_regs->EPCTR); + + if (data & PLL_LOCK) + break; + } + + _nbu2ss_bitclr(&udc->p_regs->EPCTR, PLL_RESUME); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget, + int is_selfpowered) +{ + struct nbu2ss_udc *udc; + unsigned long flags; + +/* INFO("=== %s()\n", __func__); */ + + if (pgadget == NULL) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + udc = container_of(pgadget, struct nbu2ss_udc, gadget); + + spin_lock_irqsave(&udc->lock, flags); + udc->self_powered = (is_selfpowered != 0); + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_vbus_session(struct usb_gadget *pgadget, int is_active) +{ +/* INFO("=== %s()\n", __func__); */ + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned mA) +{ + struct nbu2ss_udc *udc; + unsigned long flags; + +/* INFO("=== %s()\n", __func__); */ + + if (pgadget == NULL) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + udc = container_of(pgadget, struct nbu2ss_udc, gadget); + + spin_lock_irqsave(&udc->lock, flags); + udc->mA = mA; + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on) +{ + struct nbu2ss_udc *udc; + unsigned long flags; + +/* INFO("=== %s()\n", __func__); */ + + if (pgadget == NULL) { + ERR("%s, bad param\n", __func__); + return -EINVAL; + } + + udc = container_of(pgadget, struct nbu2ss_udc, gadget); + + if (udc->driver == NULL) { + pr_warning("%s, Not Regist Driver\n", __func__); + return -EINVAL; + } + + if (udc->vbus_active == 0) + return -ESHUTDOWN; + + spin_lock_irqsave(&udc->lock, flags); + _nbu2ss_pullup(udc, is_on); + spin_unlock_irqrestore(&udc->lock, flags); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_gad_ioctl( + struct usb_gadget *pgadget, + unsigned code, + unsigned long param) +{ +/* INFO("=== %s()\n", __func__); */ + return 0; +} + + +static const struct usb_gadget_ops nbu2ss_gadget_ops = { + .get_frame = nbu2ss_gad_get_frame, + .wakeup = nbu2ss_gad_wakeup, + .set_selfpowered = nbu2ss_gad_set_selfpowered, + .vbus_session = nbu2ss_gad_vbus_session, + .vbus_draw = nbu2ss_gad_vbus_draw, + .pullup = nbu2ss_gad_pullup, + .ioctl = nbu2ss_gad_ioctl, +}; + +static char g_ep0_name[] = "ep0"; +static char g_ep1_name[] = "ep1-bulk"; +static char g_ep2_name[] = "ep2-bulk"; +static char g_ep3_name[] = "ep3in-int"; +static char g_ep4_name[] = "ep4-iso"; +static char g_ep5_name[] = "ep5-iso"; +static char g_ep6_name[] = "ep6-bulk"; +static char g_ep7_name[] = "ep7-bulk"; +static char g_ep8_name[] = "ep8in-int"; +static char g_ep9_name[] = "ep9-iso"; +static char g_epa_name[] = "epa-iso"; +static char g_epb_name[] = "epb-bulk"; +static char g_epc_name[] = "epc-nulk"; +static char g_epd_name[] = "epdin-int"; + +static char *gp_ep_name[NUM_ENDPOINTS] = { + g_ep0_name, + g_ep1_name, + g_ep2_name, + g_ep3_name, + g_ep4_name, + g_ep5_name, + g_ep6_name, + g_ep7_name, + g_ep8_name, + g_ep9_name, + g_epa_name, + g_epb_name, + g_epc_name, + g_epd_name, +}; + +/*-------------------------------------------------------------------------*/ +static void __init nbu2ss_drv_set_ep_info( + struct nbu2ss_udc *udc, + struct nbu2ss_ep *ep, + u8 *name) +{ + ep->udc = udc; + ep->desc = NULL; + + ep->ep.driver_data = NULL; + ep->ep.name = name; + ep->ep.ops = &nbu2ss_ep_ops; + + if (isdigit(name[2])) { + + long num; + int res; + char tempbuf[2]; + + tempbuf[0] = name[2]; + tempbuf[1] = '\0'; + res = strict_strtol(tempbuf, 16, &num); + + if (num == 0) + ep->ep.maxpacket = EP0_PACKETSIZE; + else + ep->ep.maxpacket = EP_PACKETSIZE; + + } else { + ep->ep.maxpacket = EP_PACKETSIZE; + } + + list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list); + INIT_LIST_HEAD(&ep->queue); +} + +/*-------------------------------------------------------------------------*/ +static void __init nbu2ss_drv_ep_init(struct nbu2ss_udc *udc) +{ + int i; + + INIT_LIST_HEAD(&udc->gadget.ep_list); + udc->gadget.ep0 = &udc->ep[0].ep; + + + for (i = 0; i < NUM_ENDPOINTS; i++) + nbu2ss_drv_set_ep_info(udc, &udc->ep[i], gp_ep_name[i]); + + list_del_init(&udc->ep[0].ep.ep_list); +} + +/*-------------------------------------------------------------------------*/ +/* platform_driver */ +static int __init nbu2ss_drv_contest_init( + struct platform_device *pdev, + struct nbu2ss_udc *udc) +{ + spin_lock_init(&udc->lock); + udc->dev = &pdev->dev; + + udc->self_powered = 1; + udc->devstate = USB_STATE_NOTATTACHED; + udc->pdev = pdev; + udc->mA = 0; + + udc->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + + /* init Endpoint */ + nbu2ss_drv_ep_init(udc); + + /* init Gadget */ + udc->gadget.ops = &nbu2ss_gadget_ops; + udc->gadget.ep0 = &udc->ep[0].ep; + udc->gadget.speed = USB_SPEED_UNKNOWN; + udc->gadget.name = driver_name; + //udc->gadget.is_dualspeed = 1; + + device_initialize(&udc->gadget.dev); + + dev_set_name(&udc->gadget.dev, "gadget"); + udc->gadget.dev.parent = &pdev->dev; + udc->gadget.dev.dma_mask = pdev->dev.dma_mask; + + return 0; +} + +/* + * probe - binds to the platform device + */ +static int nbu2ss_drv_probe(struct platform_device *pdev) +{ + int status = -ENODEV; + struct nbu2ss_udc *udc; + + udc = &udc_controller; + memset(udc, 0, sizeof(struct nbu2ss_udc)); + + platform_set_drvdata(pdev, udc); + + /* IO Memory Region */ + if (!request_mem_region(USB_BASE_ADDRESS, USB_BASE_SIZE + , driver_name)) { + + ERR("request_mem_region failed\n"); + return -EBUSY; + } + + /* IO Memory */ + udc->p_regs = (PT_FC_REGS)ioremap(USB_BASE_ADDRESS, USB_BASE_SIZE); + if (!udc->p_regs) { + ERR("request_io_mem failed\n"); + goto cleanup3; + } + + /* USB Function Controller Interrupt */ + status = request_irq(USB_UDC_IRQ_1, + _nbu2ss_udc_irq, + IRQF_DISABLED, + driver_name, + udc); + + if (status != 0) { + ERR("request_irq(USB_UDC_IRQ_1) failed\n"); + goto cleanup2; + } + + /* Driver Initialization */ + status = nbu2ss_drv_contest_init(pdev, udc); + if (status < 0) { + /* Error */ + goto cleanup1; + } + + /* VBUS Interrupt */ + irq_set_irq_type(INT_VBUS, IRQ_TYPE_EDGE_BOTH); + status = request_irq(INT_VBUS, + _nbu2ss_vbus_irq, + IRQF_SHARED, + driver_name, + udc); + + if (status != 0) { + ERR("request_irq(INT_VBUS) failed\n"); + goto cleanup1; + } + + return status; + +cleanup1: + /* Interrupt Handler - Release */ + free_irq(USB_UDC_IRQ_1, udc); + +cleanup2: + /* IO Memory - Release */ + if (udc->p_regs) + iounmap(udc->p_regs); + +cleanup3: + /* IO Memory Region - Release */ + release_mem_region(USB_BASE_ADDRESS, USB_BASE_SIZE); + + return status; +} + +/*-------------------------------------------------------------------------*/ +static void nbu2ss_drv_shutdown(struct platform_device *pdev) +{ + struct nbu2ss_udc *udc; + + udc = platform_get_drvdata(pdev); + if (udc == NULL) + return; + + _nbu2ss_disable_controller(udc); +} + +/*-------------------------------------------------------------------------*/ +static int __exit nbu2ss_drv_remove(struct platform_device *pdev) +{ + struct nbu2ss_udc *udc; + struct nbu2ss_ep *ep; + int i; + + udc = &udc_controller; + + for (i = 0; i < NUM_ENDPOINTS; i++) { + ep = &udc->ep[i]; + if (ep->virt_buf) + dma_free_coherent(NULL, PAGE_SIZE, + (void *)ep->virt_buf, ep->phys_buf); + } + + /* Interrupt Handler - Release */ + free_irq(USB_UDC_IRQ_1, udc); + + /* Interrupt Handler - Release */ + free_irq(INT_VBUS, udc); + + /* IO Memory - Release */ + if (udc->p_regs) + iounmap(udc->p_regs); + + /* IO Memory Region - Release */ + release_mem_region(USB_BASE_ADDRESS, USB_BASE_SIZE); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct nbu2ss_udc *udc; + + udc = platform_get_drvdata(pdev); + if (udc == NULL) + return 0; + + if (udc->vbus_active) { + udc->vbus_active = 0; + udc->devstate = USB_STATE_NOTATTACHED; + udc->linux_suspended = 1; + + if (udc->usb_suspended) { + udc->usb_suspended = 0; + _nbu2ss_reset_controller(udc); + } + + _nbu2ss_quiesce(udc); + } + _nbu2ss_disable_controller(udc); + + return 0; +} + +/*-------------------------------------------------------------------------*/ +static int nbu2ss_drv_resume(struct platform_device *pdev) +{ + u32 data; + struct nbu2ss_udc *udc; + + udc = platform_get_drvdata(pdev); + if (udc == NULL) + return 0; + + data = gpio_get_value(VBUS_VALUE); + if (data) { + udc->vbus_active = 1; + udc->devstate = USB_STATE_POWERED; + _nbu2ss_enable_controller(udc); + _nbu2ss_pullup(udc, 1); + } + + udc->linux_suspended = 0; + + return 0; +} + + +static struct platform_driver udc_driver = { + .probe = nbu2ss_drv_probe, + .shutdown = nbu2ss_drv_shutdown, + .remove = __exit_p(nbu2ss_drv_remove), + .suspend = nbu2ss_drv_suspend, + .resume = nbu2ss_drv_resume, + .driver = { + .owner = THIS_MODULE, + .name = driver_name, + }, +}; + + + +/*-------------------------------------------------------------------------*/ +/* module */ + +/*-------------------------------------------------------------------------*/ +static int __init udc_init(void) +{ + return platform_driver_register(&udc_driver); +} +module_init(udc_init); + +/*-------------------------------------------------------------------------*/ +static void __exit udc_exit(void) +{ + platform_driver_unregister(&udc_driver); +} +module_exit(udc_exit); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Renesas Electronics Corporation"); +MODULE_LICENSE("GPL"); + + diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h new file mode 100644 index 000000000000..cc5a7d88048d --- /dev/null +++ b/drivers/staging/emxx_udc/emxx_udc.h @@ -0,0 +1,662 @@ +/* + * EMXX FCD (Function Controller Driver) for USB. + * + * Copyright (C) 2010 Renesas Electronics Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA. + */ + + + + +#ifndef _LINUX_EMXX_H +#define _LINUX_EMXX_H + + + +/*---------------------------------------------------------------------------*/ +/*----------------- Default undef */ +#if 0 +#define DEBUG +#define UDC_DEBUG_DUMP +#endif + +/* #define USE_INT_COUNT_OVER */ + +/*----------------- Default define */ +#define USE_DMA 1 +#define USE_SUSPEND_WAIT 1 + + + +#ifndef TRUE +#define TRUE 1 +#define FALSE 0 +#endif + + +/*------------ Board dependence(Resource) */ +#define USB_BASE_ADDRESS EMXX_USBS1_BASE +#define USB_BASE_SIZE 0x2000 + +#define USB_UDC_IRQ_0 INT_USBF0 +#define USB_UDC_IRQ_1 INT_USBF1 +#define VBUS_VALUE GPIO_VBUS + +/* below hacked up for staging integration */ +#define GPIO_VBUS 0 /* GPIO_P153 on KZM9D */ +#define INT_VBUS 0 /* IRQ for GPIO_P153 */ +#define INT_USBF0 158 +#define INT_USBF1 159 +#define EMXX_USBS0_BASE 0xe2700000 +#define EMXX_USBS1_BASE 0xe2800000 + +/*------------ Board dependence(Wait) */ + +/* CHATTERING wait time ms */ +#define VBUS_CHATTERING_MDELAY 1 +/* DMA Abort wait time ms */ +#define DMA_DISABLE_TIME 10 + + + +/*------------ Controller dependence */ +#define NUM_ENDPOINTS 14 /* Endpoint */ +#define REG_EP_NUM 15 /* Endpoint Register */ +#define DMA_MAX_COUNT 256 /* DMA Block */ + + + +#define EPC_RST_DISABLE_TIME 1 /* 1 usec */ +#define EPC_DIRPD_DISABLE_TIME 1 /* 1 msec */ +#define EPC_PLL_LOCK_COUNT 1000 /* 1000 */ +#define IN_DATA_EMPTY_COUNT 1000 /* 1000 */ + +#define CHATGER_TIME 700 /* 700msec */ +#define USB_SUSPEND_TIME 2000 /* 2 sec */ + + +/* U2F FLAG */ +#define U2F_ENABLE 1 +#define U2F_DISABLE 0 + + +/*------- BIT */ +#define BIT00 0x00000001 +#define BIT01 0x00000002 +#define BIT02 0x00000004 +#define BIT03 0x00000008 +#define BIT04 0x00000010 +#define BIT05 0x00000020 +#define BIT06 0x00000040 +#define BIT07 0x00000080 +#define BIT08 0x00000100 +#define BIT09 0x00000200 +#define BIT10 0x00000400 +#define BIT11 0x00000800 +#define BIT12 0x00001000 +#define BIT13 0x00002000 +#define BIT14 0x00004000 +#define BIT15 0x00008000 +#define BIT16 0x00010000 +#define BIT17 0x00020000 +#define BIT18 0x00040000 +#define BIT19 0x00080000 +#define BIT20 0x00100000 +#define BIT21 0x00200000 +#define BIT22 0x00400000 +#define BIT23 0x00800000 +#define BIT24 0x01000000 +#define BIT25 0x02000000 +#define BIT26 0x04000000 +#define BIT27 0x08000000 +#define BIT28 0x10000000 +#define BIT29 0x20000000 +#define BIT30 0x40000000 +#define BIT31 0x80000000 + +#if 0 +/*------- (0x0000) USB Control Register */ +#define USBTESTMODE (BIT18+BIT17+BIT16) +#define TEST_J BIT16 +#define TEST_K BIT17 +#define TEST_SE0_NAK (BIT17+BIT16) +#define TEST_PACKET BIT18 +#endif +#define TEST_FORCE_ENABLE (BIT18+BIT16) + +#define INT_SEL BIT10 +#define CONSTFS BIT09 +#define SOF_RCV BIT08 +#define RSUM_IN BIT07 +#define SUSPEND BIT06 +#define CONF BIT05 +#define DEFAULT BIT04 +#define CONNECTB BIT03 +#define PUE2 BIT02 + +#define MAX_TEST_MODE_NUM 0x05 +#define TEST_MODE_SHIFT 16 + +/*------- (0x0004) USB Status Register */ +#define SPEED_MODE BIT06 +#define HIGH_SPEED BIT06 + +#define CONF BIT05 +#define DEFAULT BIT04 +#define USB_RST BIT03 +#define SPND_OUT BIT02 +#define RSUM_OUT BIT01 + +/*------- (0x0008) USB Address Register */ +#define USB_ADDR 0x007F0000 +#define SOF_STATUS BIT15 +#define UFRAME (BIT14+BIT13+BIT12) +#define FRAME 0x000007FF + +#define USB_ADRS_SHIFT 16 + +/*------- (0x000C) UTMI Characteristic 1 Register */ +#define SQUSET (BIT07+BIT06+BIT05+BIT04) + +#define USB_SQUSET (BIT06+BIT05+BIT04) + +/*------- (0x0010) TEST Control Register */ +#define FORCEHS BIT02 +#define CS_TESTMODEEN BIT01 +#define LOOPBACK BIT00 + +/*------- (0x0018) Setup Data 0 Register */ +/*------- (0x001C) Setup Data 1 Register */ + +/*------- (0x0020) USB Interrupt Status Register */ +#define EPn_INT 0x00FFFF00 +#define EP15_INT BIT23 +#define EP14_INT BIT22 +#define EP13_INT BIT21 +#define EP12_INT BIT20 +#define EP11_INT BIT19 +#define EP10_INT BIT18 +#define EP9_INT BIT17 +#define EP8_INT BIT16 +#define EP7_INT BIT15 +#define EP6_INT BIT14 +#define EP5_INT BIT13 +#define EP4_INT BIT12 +#define EP3_INT BIT11 +#define EP2_INT BIT10 +#define EP1_INT BIT09 +#define EP0_INT BIT08 +#define SPEED_MODE_INT BIT06 +#define SOF_ERROR_INT BIT05 +#define SOF_INT BIT04 +#define USB_RST_INT BIT03 +#define SPND_INT BIT02 +#define RSUM_INT BIT01 + +#define USB_INT_STA_RW 0x7E + +/*------- (0x0024) USB Interrupt Enable Register */ +#define EP15_0_EN 0x00FFFF00 +#define EP15_EN BIT23 +#define EP14_EN BIT22 +#define EP13_EN BIT21 +#define EP12_EN BIT20 +#define EP11_EN BIT19 +#define EP10_EN BIT18 +#define EP9_EN BIT17 +#define EP8_EN BIT16 +#define EP7_EN BIT15 +#define EP6_EN BIT14 +#define EP5_EN BIT13 +#define EP4_EN BIT12 +#define EP3_EN BIT11 +#define EP2_EN BIT10 +#define EP1_EN BIT09 +#define EP0_EN BIT08 +#define SPEED_MODE_EN BIT06 +#define SOF_ERROR_EN BIT05 +#define SOF_EN BIT04 +#define USB_RST_EN BIT03 +#define SPND_EN BIT02 +#define RSUM_EN BIT01 + +#define USB_INT_EN_BIT \ + (EP0_EN|SPEED_MODE_EN|USB_RST_EN|SPND_EN|RSUM_EN) + +/*------- (0x0028) EP0 Control Register */ +#define EP0_STGSEL BIT18 +#define EP0_OVERSEL BIT17 +#define EP0_AUTO BIT16 +#define EP0_PIDCLR BIT09 +#define EP0_BCLR BIT08 +#define EP0_DEND BIT07 +#define EP0_DW (BIT06+BIT05) +#define EP0_DW4 0 +#define EP0_DW3 (BIT06+BIT05) +#define EP0_DW2 BIT06 +#define EP0_DW1 BIT05 + +#define EP0_INAK_EN BIT04 +#define EP0_PERR_NAK_CLR BIT03 +#define EP0_STL BIT02 +#define EP0_INAK BIT01 +#define EP0_ONAK BIT00 + +/*------- (0x002C) EP0 Status Register */ +#define EP0_PID BIT18 +#define EP0_PERR_NAK BIT17 +#define EP0_PERR_NAK_INT BIT16 +#define EP0_OUT_NAK_INT BIT15 +#define EP0_OUT_NULL BIT14 +#define EP0_OUT_FULL BIT13 +#define EP0_OUT_EMPTY BIT12 +#define EP0_IN_NAK_INT BIT11 +#define EP0_IN_DATA BIT10 +#define EP0_IN_FULL BIT09 +#define EP0_IN_EMPTY BIT08 +#define EP0_OUT_NULL_INT BIT07 +#define EP0_OUT_OR_INT BIT06 +#define EP0_OUT_INT BIT05 +#define EP0_IN_INT BIT04 +#define EP0_STALL_INT BIT03 +#define STG_END_INT BIT02 +#define STG_START_INT BIT01 +#define SETUP_INT BIT00 + +#define EP0_STATUS_RW_BIT (BIT16|BIT15|BIT11|0xFF) + +/*------- (0x0030) EP0 Interrupt Enable Register */ +#define EP0_PERR_NAK_EN BIT16 +#define EP0_OUT_NAK_EN BIT15 + +#define EP0_IN_NAK_EN BIT11 + +#define EP0_OUT_NULL_EN BIT07 +#define EP0_OUT_OR_EN BIT06 +#define EP0_OUT_EN BIT05 +#define EP0_IN_EN BIT04 +#define EP0_STALL_EN BIT03 +#define STG_END_EN BIT02 +#define STG_START_EN BIT01 +#define SETUP_EN BIT00 + +#define EP0_INT_EN_BIT \ + (EP0_OUT_OR_EN|EP0_OUT_EN|EP0_IN_EN|STG_END_EN|SETUP_EN) + +/*------- (0x0034) EP0 Length Register */ +#define EP0_LDATA 0x0000007F + +/*------- (0x0038) EP0 Read Register */ +/*------- (0x003C) EP0 Write Register */ + +/*------- (0x0040:) EPn Control Register */ +#define EPn_EN BIT31 +#define EPn_BUF_TYPE BIT30 +#define EPn_BUF_SINGLE BIT30 + +#define EPn_DIR0 BIT26 +#define EPn_MODE (BIT25+BIT24) +#define EPn_BULK 0 +#define EPn_INTERRUPT BIT24 +#define EPn_ISO BIT25 + +#define EPn_OVERSEL BIT17 +#define EPn_AUTO BIT16 + +#define EPn_IPIDCLR BIT11 +#define EPn_OPIDCLR BIT10 +#define EPn_BCLR BIT09 +#define EPn_CBCLR BIT08 +#define EPn_DEND BIT07 +#define EPn_DW (BIT06+BIT05) +#define EPn_DW4 0 +#define EPn_DW3 (BIT06+BIT05) +#define EPn_DW2 BIT06 +#define EPn_DW1 BIT05 + +#define EPn_OSTL_EN BIT04 +#define EPn_ISTL BIT03 +#define EPn_OSTL BIT02 + +#define EPn_ONAK BIT00 + +/*------- (0x0044:) EPn Status Register */ +#define EPn_ISO_PIDERR BIT29 /* R */ +#define EPn_OPID BIT28 /* R */ +#define EPn_OUT_NOTKN BIT27 /* R */ +#define EPn_ISO_OR BIT26 /* R */ + +#define EPn_ISO_CRC BIT24 /* R */ +#define EPn_OUT_END_INT BIT23 /* RW */ +#define EPn_OUT_OR_INT BIT22 /* RW */ +#define EPn_OUT_NAK_ERR_INT BIT21 /* RW */ +#define EPn_OUT_STALL_INT BIT20 /* RW */ +#define EPn_OUT_INT BIT19 /* RW */ +#define EPn_OUT_NULL_INT BIT18 /* RW */ +#define EPn_OUT_FULL BIT17 /* R */ +#define EPn_OUT_EMPTY BIT16 /* R */ + +#define EPn_IPID BIT10 /* R */ +#define EPn_IN_NOTKN BIT09 /* R */ +#define EPn_ISO_UR BIT08 /* R */ +#define EPn_IN_END_INT BIT07 /* RW */ + +#define EPn_IN_NAK_ERR_INT BIT05 /* RW */ +#define EPn_IN_STALL_INT BIT04 /* RW */ +#define EPn_IN_INT BIT03 /* RW */ +#define EPn_IN_DATA BIT02 /* R */ +#define EPn_IN_FULL BIT01 /* R */ +#define EPn_IN_EMPTY BIT00 /* R */ + +#define EPn_INT_EN \ + (EPn_OUT_END_INT|EPn_OUT_INT|EPn_IN_END_INT|EPn_IN_INT) + +/*------- (0x0048:) EPn Interrupt Enable Register */ +#define EPn_OUT_END_EN BIT23 /* RW */ +#define EPn_OUT_OR_EN BIT22 /* RW */ +#define EPn_OUT_NAK_ERR_EN BIT21 /* RW */ +#define EPn_OUT_STALL_EN BIT20 /* RW */ +#define EPn_OUT_EN BIT19 /* RW */ +#define EPn_OUT_NULL_EN BIT18 /* RW */ + +#define EPn_IN_END_EN BIT07 /* RW */ + +#define EPn_IN_NAK_ERR_EN BIT05 /* RW */ +#define EPn_IN_STALL_EN BIT04 /* RW */ +#define EPn_IN_EN BIT03 /* RW */ + +/*------- (0x004C:) EPn Interrupt Enable Register */ +#define EPn_STOP_MODE BIT11 +#define EPn_DEND_SET BIT10 +#define EPn_BURST_SET BIT09 +#define EPn_STOP_SET BIT08 + +#define EPn_DMA_EN BIT04 + +#define EPn_DMAMODE0 BIT00 + +/*------- (0x0050:) EPn MaxPacket & BaseAddress Register */ +#define EPn_BASEAD 0x1FFF0000 +#define EPn_MPKT 0x000007FF + +/*------- (0x0054:) EPn Length & DMA Count Register */ +#define EPn_DMACNT 0x01FF0000 +#define EPn_LDATA 0x000007FF + +/*------- (0x0058:) EPn Read Register */ +/*------- (0x005C:) EPn Write Register */ + +/*------- (0x1000) AHBSCTR Register */ +#define WAIT_MODE BIT00 + +/*------- (0x1004) AHBMCTR Register */ +#define ARBITER_CTR BIT31 /* RW */ +#define MCYCLE_RST BIT12 /* RW */ + +#define ENDIAN_CTR (BIT09+BIT08) /* RW */ +#define ENDIAN_BYTE_SWAP BIT09 +#define ENDIAN_HALF_WORD_SWAP ENDIAN_CTR + +#define HBUSREQ_MODE BIT05 /* RW */ +#define HTRANS_MODE BIT04 /* RW */ + +#define WBURST_TYPE BIT02 /* RW */ +#define BURST_TYPE (BIT01+BIT00) /* RW */ +#define BURST_MAX_16 0 +#define BURST_MAX_8 BIT00 +#define BURST_MAX_4 BIT01 +#define BURST_SINGLE BURST_TYPE + +/*------- (0x1008) AHBBINT Register */ +#define DMA_ENDINT 0xFFFE0000 /* RW */ + +#define AHB_VBUS_INT BIT13 /* RW */ + +#define MBUS_ERRINT BIT06 /* RW */ + +#define SBUS_ERRINT0 BIT04 /* RW */ +#define ERR_MASTER 0x0000000F /* R */ + +/*------- (0x100C) AHBBINTEN Register */ +#define DMA_ENDINTEN 0xFFFE0000 /* RW */ + +#define VBUS_INTEN BIT13 /* RW */ + +#define MBUS_ERRINTEN BIT06 /* RW */ + +#define SBUS_ERRINT0EN BIT04 /* RW */ + +/*------- (0x1010) EPCTR Register */ +#define DIRPD BIT12 /* RW */ + +#define VBUS_LEVEL BIT08 /* R */ + +#define PLL_RESUME BIT05 /* RW */ +#define PLL_LOCK BIT04 /* R */ + +#ifdef CONFIG_MACH_EMGR +#define PLL_RST BIT02 /* RW */ +#endif + +#define EPC_RST BIT00 /* RW */ + +/*------- (0x1014) USBF_EPTEST Register */ +#define LINESTATE (BIT09+BIT08) /* R */ +#define DM_LEVEL BIT09 /* R */ +#define DP_LEVEL BIT08 /* R */ + +#define PHY_TST BIT01 /* RW */ +#define PHY_TSTCLK BIT00 /* RW */ + +/*------- (0x1020) USBSSVER Register */ +#define AHBB_VER 0x00FF0000 /* R */ +#define EPC_VER 0x0000FF00 /* R */ +#define SS_VER 0x000000FF /* R */ + +/*------- (0x1024) USBSSCONF Register */ +#define EP_AVAILABLE 0xFFFF0000 /* R */ +#define DMA_AVAILABLE 0x0000FFFF /* R */ + +/*------- (0x1110:) EPnDCR1 Register */ +#define DCR1_EPn_DMACNT 0x00FF0000 /* RW */ + +#define DCR1_EPn_DIR0 BIT01 /* RW */ +#define DCR1_EPn_REQEN BIT00 /* RW */ + +/*------- (0x1114:) EPnDCR2 Register */ +#define DCR2_EPn_LMPKT 0x07FF0000 /* RW */ + +#define DCR2_EPn_MPKT 0x000007FF /* RW */ + +/*------- (0x1118:) EPnTADR Register */ +#define EPn_TADR 0xFFFFFFFF /* RW */ + + + +/*===========================================================================*/ +/* Struct */ +/*------- T_EP_REGS */ +typedef struct _T_EP_REGS { + u32 EP_CONTROL; /* EP Control */ + u32 EP_STATUS; /* EP Status */ + u32 EP_INT_ENA; /* EP Interrupt Enable */ + u32 EP_DMA_CTRL; /* EP DMA Control */ + u32 EP_PCKT_ADRS; /* EP Maxpacket & BaseAddress */ + u32 EP_LEN_DCNT; /* EP Length & DMA count */ + u32 EP_READ; /* EP Read */ + u32 EP_WRITE; /* EP Write */ +} T_EP_REGS, *PT_EP_REGS; + +/*------- T_EP_DCR */ +typedef struct _T_EP_DCR { + u32 EP_DCR1; /* EP_DCR1 */ + u32 EP_DCR2; /* EP_DCR2 */ + u32 EP_TADR; /* EP_TADR */ + u32 Reserved; /* Reserved */ +} T_EP_DCR, *PT_EP_DCR; + +/*------- Function Registers */ +typedef struct _T_FC_REGS { + u32 USB_CONTROL; /* (0x0000) USB Control */ + u32 USB_STATUS; /* (0x0004) USB Status */ + u32 USB_ADDRESS; /* (0x0008) USB Address */ + u32 UTMI_CHARACTER_1; /* (0x000C) UTMI Setting */ + u32 TEST_CONTROL; /* (0x0010) TEST Control */ + u32 Reserved_14; /* (0x0014) Reserved */ + u32 SETUP_DATA0; /* (0x0018) Setup Data0 */ + u32 SETUP_DATA1; /* (0x001C) Setup Data1 */ + u32 USB_INT_STA; /* (0x0020) USB Interrupt Status */ + u32 USB_INT_ENA; /* (0x0024) USB Interrupt Enable */ + u32 EP0_CONTROL; /* (0x0028) EP0 Control */ + u32 EP0_STATUS; /* (0x002C) EP0 Status */ + u32 EP0_INT_ENA; /* (0x0030) EP0 Interrupt Enable */ + u32 EP0_LENGTH; /* (0x0034) EP0 Length */ + u32 EP0_READ; /* (0x0038) EP0 Read */ + u32 EP0_WRITE; /* (0x003C) EP0 Write */ + + T_EP_REGS EP_REGS[REG_EP_NUM]; /* Endpoint Register */ + + u8 Reserved220[0x1000-0x220]; /* (0x0220:0x0FFF) Reserved */ + + u32 AHBSCTR; /* (0x1000) AHBSCTR */ + u32 AHBMCTR; /* (0x1004) AHBMCTR */ + u32 AHBBINT; /* (0x1008) AHBBINT */ + u32 AHBBINTEN; /* (0x100C) AHBBINTEN */ + u32 EPCTR; /* (0x1010) EPCTR */ + u32 USBF_EPTEST; /* (0x1014) USBF_EPTEST */ + + u8 Reserved1018[0x20-0x18]; /* (0x1018:0x101F) Reserved */ + + u32 USBSSVER; /* (0x1020) USBSSVER */ + u32 USBSSCONF; /* (0x1024) USBSSCONF */ + + u8 Reserved1028[0x110-0x28]; /* (0x1028:0x110F) Reserved */ + + T_EP_DCR EP_DCR[REG_EP_NUM]; /* */ + + u8 Reserved1200[0x1000-0x200]; /* Reserved */ + +} __attribute__ ((aligned(32))) T_FC_REGS, *PT_FC_REGS; + + + + + + + + +#define EP0_PACKETSIZE 64 +#define EP_PACKETSIZE 1024 + +/* EPn RAM SIZE */ +#define D_RAM_SIZE_CTRL 64 + +/* EPn Bulk Endpoint Max Packet Size */ +#define D_FS_RAM_SIZE_BULK 64 +#define D_HS_RAM_SIZE_BULK 512 + + +struct nbu2ss_udc; + + +enum ep0_state { + EP0_IDLE, + EP0_IN_DATA_PHASE, + EP0_OUT_DATA_PHASE, + EP0_IN_STATUS_PHASE, + EP0_OUT_STATUS_PAHSE, + EP0_END_XFER, + EP0_SUSPEND, + EP0_STALL, +}; + +struct nbu2ss_req { + struct usb_request req; + struct list_head queue; + + u32 div_len; + bool dma_flag; + bool zero; + + bool unaligned; + + unsigned mapped:1; +}; + +struct nbu2ss_ep { + struct usb_ep ep; + struct list_head queue; + + struct nbu2ss_udc *udc; + + const struct usb_endpoint_descriptor *desc; + + u8 epnum; + u8 direct; + u8 ep_type; + + unsigned wedged:1; + unsigned halted:1; + unsigned stalled:1; + + u8 *virt_buf; + dma_addr_t phys_buf; +}; + + +struct nbu2ss_udc { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct platform_device *pdev; + struct device *dev; + spinlock_t lock; + struct completion *pdone; + + enum ep0_state ep0state; + enum usb_device_state devstate; + struct usb_ctrlrequest ctrl; + struct nbu2ss_req ep0_req; + u8 ep0_buf[EP0_PACKETSIZE]; + + struct nbu2ss_ep ep[NUM_ENDPOINTS]; + + unsigned softconnect:1; + unsigned vbus_active:1; + unsigned linux_suspended:1; + unsigned linux_resume:1; + unsigned usb_suspended:1; + unsigned self_powered:1; + unsigned remote_wakeup:1; + unsigned udc_enabled:1; + + unsigned mA; + + u32 curr_config; /* Current Configuration Number */ + + PT_FC_REGS p_regs; +}; + +/* USB register access structure */ +typedef volatile union { + struct { + unsigned char DATA[4]; + } byte; + unsigned int dw; +} USB_REG_ACCESS; + +/*-------------------------------------------------------------------------*/ +#define ERR(stuff...) printk(KERN_ERR "udc: " stuff) + +#endif /* _LINUX_EMXX_H */