diff options
Diffstat (limited to 'drivers/usb/gadget/fsl_udc_core.c')
| -rw-r--r-- | drivers/usb/gadget/fsl_udc_core.c | 978 |
1 files changed, 588 insertions, 390 deletions
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index 4c55eda4bd2..28e4fc95702 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -1,12 +1,13 @@ /* - * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved. + * Copyright (C) 2004-2007,2011-2012 Freescale Semiconductor, Inc. + * All rights reserved. * * Author: Li Yang <leoli@freescale.com> * Jiang Bo <tanya.jiang@freescale.com> * * Description: * Freescale high-speed USB SOC DR module device controller driver. - * This can be found on MPC8349E/MPC8313E cpus. + * This can be found on MPC8349E/MPC8313E/MPC5121E cpus. * The driver is previously named as mpc_udc. Based on bare board * code from Dave Liu and Shlomi Gridish. * @@ -23,6 +24,7 @@ #include <linux/ioport.h> #include <linux/types.h> #include <linux/errno.h> +#include <linux/err.h> #include <linux/slab.h> #include <linux/init.h> #include <linux/list.h> @@ -39,10 +41,10 @@ #include <linux/fsl_devices.h> #include <linux/dmapool.h> #include <linux/delay.h> +#include <linux/of_device.h> #include <asm/byteorder.h> #include <asm/io.h> -#include <asm/system.h> #include <asm/unaligned.h> #include <asm/dma.h> @@ -58,9 +60,8 @@ static const char driver_name[] = "fsl-usb2-udc"; static const char driver_desc[] = DRIVER_DESC; static struct usb_dr_device *dr_regs; -#ifndef CONFIG_ARCH_MXC + static struct usb_sys_interface *usb_sys_regs; -#endif /* it is initialized in probe() */ static struct fsl_udc *udc_controller = NULL; @@ -77,12 +78,77 @@ fsl_ep0_desc = { static void fsl_ep_fifo_flush(struct usb_ep *_ep); #ifdef CONFIG_PPC32 -#define fsl_readl(addr) in_le32(addr) -#define fsl_writel(val32, addr) out_le32(addr, val32) -#else +/* + * On some SoCs, the USB controller registers can be big or little endian, + * depending on the version of the chip. In order to be able to run the + * same kernel binary on 2 different versions of an SoC, the BE/LE decision + * must be made at run time. _fsl_readl and fsl_writel are pointers to the + * BE or LE readl() and writel() functions, and fsl_readl() and fsl_writel() + * call through those pointers. Platform code for SoCs that have BE USB + * registers should set pdata->big_endian_mmio flag. + * + * This also applies to controller-to-cpu accessors for the USB descriptors, + * since their endianness is also SoC dependant. Platform code for SoCs that + * have BE USB descriptors should set pdata->big_endian_desc flag. + */ +static u32 _fsl_readl_be(const unsigned __iomem *p) +{ + return in_be32(p); +} + +static u32 _fsl_readl_le(const unsigned __iomem *p) +{ + return in_le32(p); +} + +static void _fsl_writel_be(u32 v, unsigned __iomem *p) +{ + out_be32(p, v); +} + +static void _fsl_writel_le(u32 v, unsigned __iomem *p) +{ + out_le32(p, v); +} + +static u32 (*_fsl_readl)(const unsigned __iomem *p); +static void (*_fsl_writel)(u32 v, unsigned __iomem *p); + +#define fsl_readl(p) (*_fsl_readl)((p)) +#define fsl_writel(v, p) (*_fsl_writel)((v), (p)) + +static inline void fsl_set_accessors(struct fsl_usb2_platform_data *pdata) +{ + if (pdata->big_endian_mmio) { + _fsl_readl = _fsl_readl_be; + _fsl_writel = _fsl_writel_be; + } else { + _fsl_readl = _fsl_readl_le; + _fsl_writel = _fsl_writel_le; + } +} + +static inline u32 cpu_to_hc32(const u32 x) +{ + return udc_controller->pdata->big_endian_desc + ? (__force u32)cpu_to_be32(x) + : (__force u32)cpu_to_le32(x); +} + +static inline u32 hc32_to_cpu(const u32 x) +{ + return udc_controller->pdata->big_endian_desc + ? be32_to_cpu((__force __be32)x) + : le32_to_cpu((__force __le32)x); +} +#else /* !CONFIG_PPC32 */ +static inline void fsl_set_accessors(struct fsl_usb2_platform_data *pdata) {} + #define fsl_readl(addr) readl(addr) #define fsl_writel(val32, addr) writel(val32, addr) -#endif +#define cpu_to_hc32(x) cpu_to_le32(x) +#define hc32_to_cpu(x) le32_to_cpu(x) +#endif /* CONFIG_PPC32 */ /******************************************************************** * Internal Used Function @@ -119,20 +185,7 @@ static void done(struct fsl_ep *ep, struct fsl_req *req, int status) dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma); } - if (req->mapped) { - dma_unmap_single(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->req.dma = DMA_ADDR_INVALID; - req->mapped = 0; - } else - dma_sync_single_for_cpu(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); + usb_gadget_unmap_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); if (status && (status != -ESHUTDOWN)) VDBG("complete %s req %p stat %d len %u/%u", @@ -177,11 +230,11 @@ static void nuke(struct fsl_ep *ep, int status) static int dr_controller_setup(struct fsl_udc *udc) { - unsigned int tmp, portctrl; -#ifndef CONFIG_ARCH_MXC + unsigned int tmp, portctrl, ep_num; + unsigned int max_no_of_ep; unsigned int ctrl; -#endif unsigned long timeout; + #define FSL_UDC_RESET_TIMEOUT 1000 /* Config PHY interface */ @@ -189,12 +242,32 @@ static int dr_controller_setup(struct fsl_udc *udc) portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH); switch (udc->phy_mode) { case FSL_USB2_PHY_ULPI: + if (udc->pdata->have_sysif_regs) { + if (udc->pdata->controller_ver) { + /* controller version 1.6 or above */ + ctrl = __raw_readl(&usb_sys_regs->control); + ctrl &= ~USB_CTRL_UTMI_PHY_EN; + ctrl |= USB_CTRL_USB_EN; + __raw_writel(ctrl, &usb_sys_regs->control); + } + } portctrl |= PORTSCX_PTS_ULPI; break; case FSL_USB2_PHY_UTMI_WIDE: portctrl |= PORTSCX_PTW_16BIT; /* fall through */ case FSL_USB2_PHY_UTMI: + if (udc->pdata->have_sysif_regs) { + if (udc->pdata->controller_ver) { + /* controller version 1.6 or above */ + ctrl = __raw_readl(&usb_sys_regs->control); + ctrl |= (USB_CTRL_UTMI_PHY_EN | + USB_CTRL_USB_EN); + __raw_writel(ctrl, &usb_sys_regs->control); + mdelay(FSL_UTMI_PHY_DLY); /* Delay for UTMI + PHY CLK to become stable - 10ms*/ + } + } portctrl |= PORTSCX_PTS_UTMI; break; case FSL_USB2_PHY_SERIAL: @@ -226,9 +299,12 @@ static int dr_controller_setup(struct fsl_udc *udc) /* Set the controller as device mode */ tmp = fsl_readl(&dr_regs->usbmode); + tmp &= ~USB_MODE_CTRL_MODE_MASK; /* clear mode bits */ tmp |= USB_MODE_CTRL_MODE_DEVICE; /* Disable Setup Lockout */ tmp |= USB_MODE_SETUP_LOCK_OFF; + if (udc->pdata->es) + tmp |= USB_MODE_ES; fsl_writel(tmp, &dr_regs->usbmode); /* Clear the setup status */ @@ -242,22 +318,34 @@ static int dr_controller_setup(struct fsl_udc *udc) udc->ep_qh, (int)tmp, fsl_readl(&dr_regs->endpointlistaddr)); + max_no_of_ep = (0x0000001F & fsl_readl(&dr_regs->dccparams)); + for (ep_num = 1; ep_num < max_no_of_ep; ep_num++) { + tmp = fsl_readl(&dr_regs->endptctrl[ep_num]); + tmp &= ~(EPCTRL_TX_TYPE | EPCTRL_RX_TYPE); + tmp |= (EPCTRL_EP_TYPE_BULK << EPCTRL_TX_EP_TYPE_SHIFT) + | (EPCTRL_EP_TYPE_BULK << EPCTRL_RX_EP_TYPE_SHIFT); + fsl_writel(tmp, &dr_regs->endptctrl[ep_num]); + } /* Config control enable i/o output, cpu endian register */ #ifndef CONFIG_ARCH_MXC - ctrl = __raw_readl(&usb_sys_regs->control); - ctrl |= USB_CTRL_IOENB; - __raw_writel(ctrl, &usb_sys_regs->control); + if (udc->pdata->have_sysif_regs) { + ctrl = __raw_readl(&usb_sys_regs->control); + ctrl |= USB_CTRL_IOENB; + __raw_writel(ctrl, &usb_sys_regs->control); + } #endif #if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE) /* Turn on cache snooping hardware, since some PowerPC platforms * wholly rely on hardware to deal with cache coherent. */ - /* Setup Snooping for all the 4GB space */ - tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */ - __raw_writel(tmp, &usb_sys_regs->snoop1); - tmp |= 0x80000000; /* starts from 0x8000000, size 2G */ - __raw_writel(tmp, &usb_sys_regs->snoop2); + if (udc->pdata->have_sysif_regs) { + /* Setup Snooping for all the 4GB space */ + tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */ + __raw_writel(tmp, &usb_sys_regs->snoop1); + tmp |= 0x80000000; /* starts from 0x8000000, size 2G */ + __raw_writel(tmp, &usb_sys_regs->snoop2); + } #endif return 0; @@ -293,6 +381,19 @@ static void dr_controller_stop(struct fsl_udc *udc) { unsigned int tmp; + pr_debug("%s\n", __func__); + + /* if we're in OTG mode, and the Host is currently using the port, + * stop now and don't rip the controller out from under the + * ehci driver + */ + if (udc->gadget.is_otg) { + if (!(fsl_readl(&dr_regs->otgsc) & OTGSC_STS_USB_ID)) { + pr_debug("udc: Leaving early\n"); + return; + } + } + /* disable all INTR */ fsl_writel(0, &dr_regs->usbintr); @@ -318,12 +419,14 @@ static void dr_ep_setup(unsigned char ep_num, unsigned char dir, if (ep_num) tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST; tmp_epctrl |= EPCTRL_TX_ENABLE; + tmp_epctrl &= ~EPCTRL_TX_TYPE; tmp_epctrl |= ((unsigned int)(ep_type) << EPCTRL_TX_EP_TYPE_SHIFT); } else { if (ep_num) tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST; tmp_epctrl |= EPCTRL_RX_ENABLE; + tmp_epctrl &= ~EPCTRL_RX_TYPE; tmp_epctrl |= ((unsigned int)(ep_type) << EPCTRL_RX_EP_TYPE_SHIFT); } @@ -409,7 +512,7 @@ static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num, if (zlt) tmp |= EP_QUEUE_HEAD_ZLT_SEL; - p_QH->max_pkt_length = cpu_to_le32(tmp); + p_QH->max_pkt_length = cpu_to_hc32(tmp); p_QH->next_dtd_ptr = 1; p_QH->size_ioc_int_sts = 0; } @@ -453,7 +556,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, ep = container_of(_ep, struct fsl_ep, ep); /* catch various bogus parameters */ - if (!_ep || !desc || ep->desc + if (!_ep || !desc || (desc->bDescriptorType != USB_DT_ENDPOINT)) return -EINVAL; @@ -462,9 +565,9 @@ static int fsl_ep_enable(struct usb_ep *_ep, if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN)) return -ESHUTDOWN; - max = le16_to_cpu(desc->wMaxPacketSize); + max = usb_endpoint_maxp(desc); - /* Disable automatic zlp generation. Driver is reponsible to indicate + /* Disable automatic zlp generation. Driver is responsible to indicate * explicitly through req->req.zero. This is needed to enable multi-td * request. */ zlt = 1; @@ -494,7 +597,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, spin_lock_irqsave(&udc->lock, flags); ep->ep.maxpacket = max; - ep->desc = desc; + ep->ep.desc = desc; ep->stopped = 0; /* Controller related setup */ @@ -518,7 +621,7 @@ static int fsl_ep_enable(struct usb_ep *_ep, retval = 0; VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name, - ep->desc->bEndpointAddress & 0x0f, + ep->ep.desc->bEndpointAddress & 0x0f, (desc->bEndpointAddress & USB_DIR_IN) ? "in" : "out", max); en_done: @@ -538,7 +641,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) int ep_num; ep = container_of(_ep, struct fsl_ep, ep); - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { VDBG("%s not enabled", _ep ? ep->ep.name : NULL); return -EINVAL; } @@ -546,10 +649,13 @@ static int fsl_ep_disable(struct usb_ep *_ep) /* disable ep on controller */ ep_num = ep_index(ep); epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]); - if (ep_is_in(ep)) - epctrl &= ~EPCTRL_TX_ENABLE; - else - epctrl &= ~EPCTRL_RX_ENABLE; + if (ep_is_in(ep)) { + epctrl &= ~(EPCTRL_TX_ENABLE | EPCTRL_TX_TYPE); + epctrl |= EPCTRL_EP_TYPE_BULK << EPCTRL_TX_EP_TYPE_SHIFT; + } else { + epctrl &= ~(EPCTRL_RX_ENABLE | EPCTRL_TX_TYPE); + epctrl |= EPCTRL_EP_TYPE_BULK << EPCTRL_RX_EP_TYPE_SHIFT; + } fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]); udc = (struct fsl_udc *)ep->udc; @@ -558,7 +664,7 @@ static int fsl_ep_disable(struct usb_ep *_ep) /* nuke all pending requests (does flush) */ nuke(ep, -ESHUTDOWN); - ep->desc = NULL; + ep->ep.desc = NULL; ep->stopped = 1; spin_unlock_irqrestore(&udc->lock, flags); @@ -596,12 +702,31 @@ static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req) kfree(req); } -/*-------------------------------------------------------------------------*/ +/* Actually add a dTD chain to an empty dQH and let go */ +static void fsl_prime_ep(struct fsl_ep *ep, struct ep_td_struct *td) +{ + struct ep_queue_head *qh = get_qh_by_ep(ep); + + /* Write dQH next pointer and terminate bit to 0 */ + qh->next_dtd_ptr = cpu_to_hc32(td->td_dma + & EP_QUEUE_HEAD_NEXT_POINTER_MASK); + + /* Clear active and halt bit */ + qh->size_ioc_int_sts &= cpu_to_hc32(~(EP_QUEUE_HEAD_STATUS_ACTIVE + | EP_QUEUE_HEAD_STATUS_HALT)); + + /* Ensure that updates to the QH will occur before priming. */ + wmb(); + + /* Prime endpoint by writing correct bit to ENDPTPRIME */ + fsl_writel(ep_is_in(ep) ? (1 << (ep_index(ep) + 16)) + : (1 << (ep_index(ep))), &dr_regs->endpointprime); +} + +/* Add dTD chain to the dQH of an EP */ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) { - int i = ep_index(ep) * 2 + ep_is_in(ep); u32 temp, bitmask, tmp_stat; - struct ep_queue_head *dQH = &ep->udc->ep_qh[i]; /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr); VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */ @@ -611,15 +736,17 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) : (1 << (ep_index(ep))); /* check if the pipe is empty */ - if (!(list_empty(&ep->queue))) { + if (!(list_empty(&ep->queue)) && !(ep_index(ep) == 0)) { /* Add td to the end */ struct fsl_req *lastreq; lastreq = list_entry(ep->queue.prev, struct fsl_req, queue); lastreq->tail->next_td_ptr = - cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK); + cpu_to_hc32(req->head->td_dma & DTD_ADDR_MASK); + /* Ensure dTD's next dtd pointer to be updated */ + wmb(); /* Read prime bit, if 1 goto done */ if (fsl_readl(&dr_regs->endpointprime) & bitmask) - goto out; + return; do { /* Set ATDTW bit in USBCMD */ @@ -636,28 +763,10 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd); if (tmp_stat) - goto out; + return; } - /* Write dQH next pointer and terminate bit to 0 */ - temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK; - dQH->next_dtd_ptr = cpu_to_le32(temp); - - /* Clear active and halt bit */ - temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE - | EP_QUEUE_HEAD_STATUS_HALT)); - dQH->size_ioc_int_sts &= temp; - - /* Ensure that updates to the QH will occure before priming. */ - wmb(); - - /* Prime endpoint by writing 1 to ENDPTPRIME */ - temp = ep_is_in(ep) - ? (1 << (ep_index(ep) + 16)) - : (1 << (ep_index(ep))); - fsl_writel(temp, &dr_regs->endpointprime); -out: - return; + fsl_prime_ep(ep, req->head); } /* Fill in the dTD structure @@ -667,7 +776,7 @@ out: * @is_last: return flag if it is the last dTD of the request * return: pointer to the built dTD */ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, - dma_addr_t *dma, int *is_last) + dma_addr_t *dma, int *is_last, gfp_t gfp_flags) { u32 swap_temp; struct ep_td_struct *dtd; @@ -676,23 +785,23 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, *length = min(req->req.length - req->req.actual, (unsigned)EP_MAX_LENGTH_TRANSFER); - dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma); + dtd = dma_pool_alloc(udc_controller->td_pool, gfp_flags, dma); if (dtd == NULL) return dtd; dtd->td_dma = *dma; /* Clear reserved field */ - swap_temp = cpu_to_le32(dtd->size_ioc_sts); + swap_temp = hc32_to_cpu(dtd->size_ioc_sts); swap_temp &= ~DTD_RESERVED_FIELDS; - dtd->size_ioc_sts = cpu_to_le32(swap_temp); + dtd->size_ioc_sts = cpu_to_hc32(swap_temp); /* Init all of buffer page pointers */ swap_temp = (u32) (req->req.dma + req->req.actual); - dtd->buff_ptr0 = cpu_to_le32(swap_temp); - dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000); - dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000); - dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000); - dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000); + dtd->buff_ptr0 = cpu_to_hc32(swap_temp); + dtd->buff_ptr1 = cpu_to_hc32(swap_temp + 0x1000); + dtd->buff_ptr2 = cpu_to_hc32(swap_temp + 0x2000); + dtd->buff_ptr3 = cpu_to_hc32(swap_temp + 0x3000); + dtd->buff_ptr4 = cpu_to_hc32(swap_temp + 0x4000); req->req.actual += *length; @@ -716,7 +825,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, if (*is_last && !req->req.no_interrupt) swap_temp |= DTD_IOC; - dtd->size_ioc_sts = cpu_to_le32(swap_temp); + dtd->size_ioc_sts = cpu_to_hc32(swap_temp); mb(); @@ -726,7 +835,7 @@ static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length, } /* Generate dtd chain for a request */ -static int fsl_req_to_dtd(struct fsl_req *req) +static int fsl_req_to_dtd(struct fsl_req *req, gfp_t gfp_flags) { unsigned count; int is_last; @@ -735,7 +844,7 @@ static int fsl_req_to_dtd(struct fsl_req *req) dma_addr_t dma; do { - dtd = fsl_build_dtd(req, &count, &dma, &is_last); + dtd = fsl_build_dtd(req, &count, &dma, &is_last, gfp_flags); if (dtd == NULL) return -ENOMEM; @@ -743,7 +852,7 @@ static int fsl_req_to_dtd(struct fsl_req *req) is_first = 0; req->head = dtd; } else { - last_dtd->next_td_ptr = cpu_to_le32(dma); + last_dtd->next_td_ptr = cpu_to_hc32(dma); last_dtd->next_td_virt = dtd; } last_dtd = dtd; @@ -751,7 +860,7 @@ static int fsl_req_to_dtd(struct fsl_req *req) req->dtd_count++; } while (!is_last); - dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE); + dtd->next_td_ptr = cpu_to_hc32(DTD_NEXT_TERMINATE); req->tail = dtd; @@ -766,7 +875,7 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) struct fsl_req *req = container_of(_req, struct fsl_req, req); struct fsl_udc *udc; unsigned long flags; - int is_iso = 0; + int ret; /* catch various bogus parameters */ if (!_req || !req->req.complete || !req->req.buf @@ -774,14 +883,13 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) VDBG("%s, bad params", __func__); return -EINVAL; } - if (unlikely(!_ep || !ep->desc)) { + if (unlikely(!_ep || !ep->ep.desc)) { VDBG("%s, bad ep", __func__); return -EINVAL; } - if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (usb_endpoint_xfer_isoc(ep->ep.desc)) { if (req->req.length > ep->ep.maxpacket) return -EMSGSIZE; - is_iso = 1; } udc = ep->udc; @@ -790,41 +898,22 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) req->ep = ep; - /* map virtual address to hardware */ - if (req->req.dma == DMA_ADDR_INVALID) { - req->req.dma = dma_map_single(ep->udc->gadget.dev.parent, - req->req.buf, - req->req.length, ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 1; - } else { - dma_sync_single_for_device(ep->udc->gadget.dev.parent, - req->req.dma, req->req.length, - ep_is_in(ep) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); - req->mapped = 0; - } + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + return ret; req->req.status = -EINPROGRESS; req->req.actual = 0; req->dtd_count = 0; - spin_lock_irqsave(&udc->lock, flags); - /* build dtds and push them to device queue */ - if (!fsl_req_to_dtd(req)) { + if (!fsl_req_to_dtd(req, gfp_flags)) { + spin_lock_irqsave(&udc->lock, flags); fsl_queue_td(ep, req); } else { - spin_unlock_irqrestore(&udc->lock, flags); return -ENOMEM; } - /* Update ep0 state */ - if ((ep_index(ep) == 0)) - udc->ep0_state = DATA_STATE_XMIT; - /* irq handler advances the queue */ if (req != NULL) list_add_tail(&req->queue, &ep->queue); @@ -875,25 +964,20 @@ static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) /* The request isn't the last request in this ep queue */ if (req->queue.next != &ep->queue) { - struct ep_queue_head *qh; struct fsl_req *next_req; - qh = ep->qh; next_req = list_entry(req->queue.next, struct fsl_req, queue); - /* Point the QH to the first TD of next request */ - fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr); + /* prime with dTD of next request */ + fsl_prime_ep(ep, next_req->head); } - - /* The request hasn't been processed, patch up the TD chain */ + /* The request hasn't been processed, patch up the TD chain */ } else { struct fsl_req *prev_req; prev_req = list_entry(req->queue.prev, struct fsl_req, queue); - fsl_writel(fsl_readl(&req->tail->next_td_ptr), - &prev_req->tail->next_td_ptr); - + prev_req->tail->next_td_ptr = req->tail->next_td_ptr; } done(ep, req, -ECONNRESET); @@ -929,12 +1013,12 @@ static int fsl_ep_set_halt(struct usb_ep *_ep, int value) ep = container_of(_ep, struct fsl_ep, ep); udc = ep->udc; - if (!_ep || !ep->desc) { + if (!_ep || !ep->ep.desc) { status = -EINVAL; goto out; } - if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) { + if (usb_endpoint_xfer_isoc(ep->ep.desc)) { status = -EOPNOTSUPP; goto out; } @@ -964,6 +1048,36 @@ out: return status; } +static int fsl_ep_fifo_status(struct usb_ep *_ep) +{ + struct fsl_ep *ep; + struct fsl_udc *udc; + int size = 0; + u32 bitmask; + struct ep_queue_head *qh; + + ep = container_of(_ep, struct fsl_ep, ep); + if (!_ep || (!ep->ep.desc && ep_index(ep) != 0)) + return -ENODEV; + + udc = (struct fsl_udc *)ep->udc; + + if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) + return -ESHUTDOWN; + + qh = get_qh_by_ep(ep); + + bitmask = (ep_is_in(ep)) ? (1 << (ep_index(ep) + 16)) : + (1 << (ep_index(ep))); + + if (fsl_readl(&dr_regs->endptstatus) & bitmask) + size = (qh->size_ioc_int_sts & DTD_PACKET_SIZE) + >> DTD_LENGTH_BIT_POS; + + pr_debug("%s %u\n", __func__, size); + return size; +} + static void fsl_ep_fifo_flush(struct usb_ep *_ep) { struct fsl_ep *ep; @@ -976,7 +1090,7 @@ static void fsl_ep_fifo_flush(struct usb_ep *_ep) return; } else { ep = container_of(_ep, struct fsl_ep, ep); - if (!ep->desc) + if (!ep->ep.desc) return; } ep_num = ep_index(ep); @@ -1016,6 +1130,7 @@ static struct usb_ep_ops fsl_ep_ops = { .dequeue = fsl_ep_dequeue, .set_halt = fsl_ep_set_halt, + .fifo_status = fsl_ep_fifo_status, .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */ }; @@ -1091,8 +1206,8 @@ static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); - if (udc->transceiver) - return otg_set_power(udc->transceiver, mA); + if (!IS_ERR_OR_NULL(udc->transceiver)) + return usb_phy_set_power(udc->transceiver, mA); return -ENOTSUPP; } @@ -1104,6 +1219,10 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) struct fsl_udc *udc; udc = container_of(gadget, struct fsl_udc, gadget); + + if (!udc->vbus_active) + return -EOPNOTSUPP; + udc->softconnect = (is_on != 0); if (can_pullup(udc)) fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP), @@ -1115,14 +1234,20 @@ static int fsl_pullup(struct usb_gadget *gadget, int is_on) return 0; } +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver); +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver); /* defined in gadget.h */ -static struct usb_gadget_ops fsl_gadget_ops = { +static const struct usb_gadget_ops fsl_gadget_ops = { .get_frame = fsl_get_frame, .wakeup = fsl_wakeup, /* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */ .vbus_session = fsl_vbus_session, .vbus_draw = fsl_vbus_draw, .pullup = fsl_pullup, + .udc_start = fsl_udc_start, + .udc_stop = fsl_udc_stop, }; /* Set protocol stall on ep0, protocol stall will automatically be cleared @@ -1144,6 +1269,7 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) { struct fsl_req *req = udc->status_req; struct fsl_ep *ep; + int ret; if (direction == EP_DIR_IN) udc->ep0_dir = USB_DIR_IN; @@ -1151,7 +1277,8 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) udc->ep0_dir = USB_DIR_OUT; ep = &udc->eps[0]; - udc->ep0_state = WAIT_FOR_OUT_STATUS; + if (udc->ep0_state != DATA_STATE_XMIT) + udc->ep0_state = WAIT_FOR_OUT_STATUS; req->ep = ep; req->req.length = 0; @@ -1160,7 +1287,11 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) req->req.complete = NULL; req->dtd_count = 0; - if (fsl_req_to_dtd(req) == 0) + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + return ret; + + if (fsl_req_to_dtd(req, GFP_ATOMIC) == 0) fsl_queue_td(ep, req); else return -ENOMEM; @@ -1201,6 +1332,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, u16 tmp = 0; /* Status, cpu endian */ struct fsl_req *req; struct fsl_ep *ep; + int ret; ep = &udc->eps[0]; @@ -1219,7 +1351,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index)); /* stall if endpoint doesn't exist */ - if (!target_ep->desc) + if (!target_ep->ep.desc) goto stall; tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep)) << USB_ENDPOINT_HALT; @@ -1230,6 +1362,7 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, req = udc->status_req; /* Fill in the reqest structure */ *((u16 *) req->req.buf) = cpu_to_le16(tmp); + req->ep = ep; req->req.length = 2; req->req.status = -EINPROGRESS; @@ -1237,14 +1370,21 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, req->req.complete = NULL; req->dtd_count = 0; + ret = usb_gadget_map_request(&ep->udc->gadget, &req->req, ep_is_in(ep)); + if (ret) + goto stall; + /* prime the data phase */ - if ((fsl_req_to_dtd(req) == 0)) + if ((fsl_req_to_dtd(req, GFP_ATOMIC) == 0)) fsl_queue_td(ep, req); else /* no mem */ goto stall; list_add_tail(&req->queue, &ep->queue); udc->ep0_state = DATA_STATE_XMIT; + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + return; stall: ep0stall(udc); @@ -1282,13 +1422,14 @@ static void setup_received_irq(struct fsl_udc *udc, /* Status phase from udc */ { int rc = -EOPNOTSUPP; + u16 ptc = 0; if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK)) == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) { int pipe = get_pipe_by_windex(wIndex); struct fsl_ep *ep; - if (wValue != 0 || wLength != 0 || pipe > udc->max_ep) + if (wValue != 0 || wLength != 0 || pipe >= udc->max_ep) break; ep = get_ep_by_pipe(udc, pipe); @@ -1303,17 +1444,19 @@ static void setup_received_irq(struct fsl_udc *udc, | USB_TYPE_STANDARD)) { /* Note: The driver has not include OTG support yet. * This will be set when OTG support is added */ - if (!gadget_is_otg(&udc->gadget)) - break; - else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE) - udc->gadget.b_hnp_enable = 1; - else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT) - udc->gadget.a_hnp_support = 1; - else if (setup->bRequest == - USB_DEVICE_A_ALT_HNP_SUPPORT) - udc->gadget.a_alt_hnp_support = 1; - else - break; + if (wValue == USB_DEVICE_TEST_MODE) + ptc = wIndex >> 8; + else if (gadget_is_otg(&udc->gadget)) { + if (setup->bRequest == + USB_DEVICE_B_HNP_ENABLE) + udc->gadget.b_hnp_enable = 1; + else if (setup->bRequest == + USB_DEVICE_A_HNP_SUPPORT) + udc->gadget.a_hnp_support = 1; + else if (setup->bRequest == + USB_DEVICE_A_ALT_HNP_SUPPORT) + udc->gadget.a_alt_hnp_support = 1; + } rc = 0; } else break; @@ -1322,6 +1465,15 @@ static void setup_received_irq(struct fsl_udc *udc, if (ep0_prime_status(udc, EP_DIR_IN)) ep0stall(udc); } + if (ptc) { + u32 tmp; + + mdelay(10); + tmp = fsl_readl(&dr_regs->portsc1) | (ptc << 16); + fsl_writel(tmp, &dr_regs->portsc1); + printk(KERN_INFO "udc: switch to test mode %d.\n", ptc); + } + return; } @@ -1341,6 +1493,14 @@ static void setup_received_irq(struct fsl_udc *udc, spin_lock(&udc->lock); udc->ep0_state = (setup->bRequestType & USB_DIR_IN) ? DATA_STATE_XMIT : DATA_STATE_RECV; + /* + * If the data stage is IN, send status prime immediately. + * See 2.0 Spec chapter 8.5.3.3 for detail. + */ + if (udc->ep0_state == DATA_STATE_XMIT) + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + } else { /* No data phase, IN status from gadget */ udc->ep0_dir = USB_DIR_IN; @@ -1369,9 +1529,8 @@ static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0, switch (udc->ep0_state) { case DATA_STATE_XMIT: - /* receive status phase */ - if (ep0_prime_status(udc, EP_DIR_OUT)) - ep0stall(udc); + /* already primed at setup_received_irq */ + udc->ep0_state = WAIT_FOR_OUT_STATUS; break; case DATA_STATE_RECV: /* send status phase */ @@ -1396,6 +1555,7 @@ static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr) { u32 temp; struct ep_queue_head *qh; + struct fsl_usb2_platform_data *pdata = udc->pdata; qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT]; @@ -1410,7 +1570,16 @@ static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr) fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd); /* Copy the setup packet to local buffer */ - memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8); + if (pdata->le_setup_buf) { + u32 *p = (u32 *)buffer_ptr; + u32 *s = (u32 *)qh->setup_buffer; + + /* Convert little endian setup buffer to CPU endian */ + *p++ = le32_to_cpu(*s++); + *p = le32_to_cpu(*s); + } else { + memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8); + } } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW)); /* Clear Setup Tripwire */ @@ -1434,19 +1603,19 @@ static int process_ep_req(struct fsl_udc *udc, int pipe, actual = curr_req->req.length; for (j = 0; j < curr_req->dtd_count; j++) { - remaining_length = (le32_to_cpu(curr_td->size_ioc_sts) + remaining_length = (hc32_to_cpu(curr_td->size_ioc_sts) & DTD_PACKET_SIZE) >> DTD_LENGTH_BIT_POS; actual -= remaining_length; - if ((errors = le32_to_cpu(curr_td->size_ioc_sts) & - DTD_ERROR_MASK)) { + errors = hc32_to_cpu(curr_td->size_ioc_sts); + if (errors & DTD_ERROR_MASK) { if (errors & DTD_STATUS_HALTED) { ERR("dTD error %08x QH=%d\n", errors, pipe); /* Clear the errors and Halt condition */ - tmp = le32_to_cpu(curr_qh->size_ioc_int_sts); + tmp = hc32_to_cpu(curr_qh->size_ioc_int_sts); tmp &= ~errors; - curr_qh->size_ioc_int_sts = cpu_to_le32(tmp); + curr_qh->size_ioc_int_sts = cpu_to_hc32(tmp); status = -EPIPE; /* FIXME: continue with next queued TD? */ @@ -1461,10 +1630,10 @@ static int process_ep_req(struct fsl_udc *udc, int pipe, status = -EILSEQ; break; } else - ERR("Unknown error has occured (0x%x)!\n", + ERR("Unknown error has occurred (0x%x)!\n", errors); - } else if (le32_to_cpu(curr_td->size_ioc_sts) + } else if (hc32_to_cpu(curr_td->size_ioc_sts) & DTD_STATUS_ACTIVE) { VDBG("Request not complete"); status = REQ_UNCOMPLETE; @@ -1510,7 +1679,7 @@ static void dtd_complete_irq(struct fsl_udc *udc) if (!bit_pos) return; - for (i = 0; i < udc->max_ep * 2; i++) { + for (i = 0; i < udc->max_ep; i++) { ep_num = i >> 1; direction = i % 2; @@ -1548,31 +1717,31 @@ static void dtd_complete_irq(struct fsl_udc *udc) } } +static inline enum usb_device_speed portscx_device_speed(u32 reg) +{ + switch (reg & PORTSCX_PORT_SPEED_MASK) { + case PORTSCX_PORT_SPEED_HIGH: + return USB_SPEED_HIGH; + case PORTSCX_PORT_SPEED_FULL: + return USB_SPEED_FULL; + case PORTSCX_PORT_SPEED_LOW: + return USB_SPEED_LOW; + default: + return USB_SPEED_UNKNOWN; + } +} + /* Process a port change interrupt */ static void port_change_irq(struct fsl_udc *udc) { - u32 speed; + if (udc->bus_reset) + udc->bus_reset = 0; /* Bus resetting is finished */ - if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) { + if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) /* Get the speed */ - speed = (fsl_readl(&dr_regs->portsc1) - & PORTSCX_PORT_SPEED_MASK); - switch (speed) { - case PORTSCX_PORT_SPEED_HIGH: - udc->gadget.speed = USB_SPEED_HIGH; - break; - case PORTSCX_PORT_SPEED_FULL: - udc->gadget.speed = USB_SPEED_FULL; - break; - case PORTSCX_PORT_SPEED_LOW: - udc->gadget.speed = USB_SPEED_LOW; - break; - default: - udc->gadget.speed = USB_SPEED_UNKNOWN; - break; - } - } + udc->gadget.speed = + portscx_device_speed(fsl_readl(&dr_regs->portsc1)); /* Update USB state */ if (!udc->resume_state) @@ -1660,6 +1829,8 @@ static void reset_irq(struct fsl_udc *udc) if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) { VDBG("Bus reset"); + /* Bus is reseting */ + udc->bus_reset = 1; /* Reset all the queues, include XD, dTD, EP queue * head and TR Queue */ reset_queues(udc); @@ -1737,6 +1908,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) /* Reset Received */ if (irq_src & USB_STS_RESET) { + VDBG("reset int"); reset_irq(udc); status = IRQ_HANDLED; } @@ -1759,71 +1931,57 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc) * Hook to gadget drivers * Called by initialization code of gadget drivers *----------------------------------------------------------------*/ -int usb_gadget_probe_driver(struct usb_gadget_driver *driver, - int (*bind)(struct usb_gadget *)) +static int fsl_udc_start(struct usb_gadget *g, + struct usb_gadget_driver *driver) { - int retval = -ENODEV; + int retval = 0; unsigned long flags = 0; - if (!udc_controller) - return -ENODEV; - - if (!driver || (driver->speed != USB_SPEED_FULL - && driver->speed != USB_SPEED_HIGH) - || !bind || !driver->disconnect || !driver->setup) - return -EINVAL; - - if (udc_controller->driver) - return -EBUSY; - /* lock is needed but whether should use this lock or another */ spin_lock_irqsave(&udc_controller->lock, flags); driver->driver.bus = NULL; /* hook up the driver */ udc_controller->driver = driver; - udc_controller->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(&udc_controller->lock, flags); - /* bind udc driver to gadget driver */ - retval = bind(&udc_controller->gadget); - if (retval) { - VDBG("bind to %s --> %d", driver->driver.name, retval); - udc_controller->gadget.dev.driver = NULL; - udc_controller->driver = NULL; - goto out; + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { + /* Suspend the controller until OTG enable it */ + udc_controller->stopped = 1; + printk(KERN_INFO "Suspend udc for OTG auto detect\n"); + + /* connect to bus through transceiver */ + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) { + retval = otg_set_peripheral( + udc_controller->transceiver->otg, + &udc_controller->gadget); + if (retval < 0) { + ERR("can't bind to transceiver\n"); + driver->unbind(&udc_controller->gadget); + udc_controller->driver = 0; + return retval; + } + } + } else { + /* Enable DR IRQ reg and set USBCMD reg Run bit */ + dr_controller_run(udc_controller); + udc_controller->usb_state = USB_STATE_ATTACHED; + udc_controller->ep0_state = WAIT_FOR_SETUP; + udc_controller->ep0_dir = 0; } - /* Enable DR IRQ reg and Set usbcmd reg Run bit */ - dr_controller_run(udc_controller); - udc_controller->usb_state = USB_STATE_ATTACHED; - udc_controller->ep0_state = WAIT_FOR_SETUP; - udc_controller->ep0_dir = 0; - printk(KERN_INFO "%s: bind to driver %s\n", - udc_controller->gadget.name, driver->driver.name); - -out: - if (retval) - printk(KERN_WARNING "gadget driver register failed %d\n", - retval); return retval; } -EXPORT_SYMBOL(usb_gadget_probe_driver); /* Disconnect from gadget driver */ -int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) +static int fsl_udc_stop(struct usb_gadget *g, + struct usb_gadget_driver *driver) { struct fsl_ep *loop_ep; unsigned long flags; - if (!udc_controller) - return -ENODEV; - - if (!driver || driver != udc_controller->driver || !driver->unbind) - return -EINVAL; - - if (udc_controller->transceiver) - otg_set_peripheral(udc_controller->transceiver, NULL); + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) + otg_set_peripheral(udc_controller->transceiver->otg, NULL); /* stop DR, disable intr */ dr_controller_stop(udc_controller); @@ -1842,19 +2000,10 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) nuke(loop_ep, -ESHUTDOWN); spin_unlock_irqrestore(&udc_controller->lock, flags); - /* report disconnect; the controller is already quiesced */ - driver->disconnect(&udc_controller->gadget); - - /* unbind gadget and unhook driver. */ - driver->unbind(&udc_controller->gadget); - udc_controller->gadget.dev.driver = NULL; udc_controller->driver = NULL; - printk(KERN_WARNING "unregistered gadget driver '%s'\n", - driver->driver.name); return 0; } -EXPORT_SYMBOL(usb_gadget_unregister_driver); /*------------------------------------------------------------------------- PROC File System Support @@ -1865,47 +2014,37 @@ EXPORT_SYMBOL(usb_gadget_unregister_driver); static const char proc_filename[] = "driver/fsl_usb2_udc"; -static int fsl_proc_read(char *page, char **start, off_t off, int count, - int *eof, void *_dev) +static int fsl_proc_read(struct seq_file *m, void *v) { - char *buf = page; - char *next = buf; - unsigned size = count; unsigned long flags; - int t, i; + int i; u32 tmp_reg; struct fsl_ep *ep = NULL; struct fsl_req *req; struct fsl_udc *udc = udc_controller; - if (off != 0) - return 0; spin_lock_irqsave(&udc->lock, flags); /* ------basic driver information ---- */ - t = scnprintf(next, size, + seq_printf(m, DRIVER_DESC "\n" "%s version: %s\n" "Gadget driver: %s\n\n", driver_name, DRIVER_VERSION, udc->driver ? udc->driver->driver.name : "(none)"); - size -= t; - next += t; /* ------ DR Registers ----- */ tmp_reg = fsl_readl(&dr_regs->usbcmd); - t = scnprintf(next, size, + seq_printf(m, "USBCMD reg:\n" "SetupTW: %d\n" "Run/Stop: %s\n\n", (tmp_reg & USB_CMD_SUTW) ? 1 : 0, (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbsts); - t = scnprintf(next, size, + seq_printf(m, "USB Status Reg:\n" "Dr Suspend: %d Reset Received: %d System Error: %s " "USB Error Interrupt: %s\n\n", @@ -1913,12 +2052,10 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, (tmp_reg & USB_STS_RESET) ? 1 : 0, (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal", (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbintr); - t = scnprintf(next, size, - "USB Intrrupt Enable Reg:\n" + seq_printf(m, + "USB Interrupt Enable Reg:\n" "Sleep Enable: %d SOF Received Enable: %d " "Reset Enable: %d\n" "System Error Enable: %d " @@ -1931,33 +2068,25 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0, (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0, (tmp_reg & USB_INTR_INT_EN) ? 1 : 0); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->frindex); - t = scnprintf(next, size, + seq_printf(m, "USB Frame Index Reg: Frame Number is 0x%x\n\n", (tmp_reg & USB_FRINDEX_MASKS)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->deviceaddr); - t = scnprintf(next, size, + seq_printf(m, "USB Device Address Reg: Device Addr is 0x%x\n\n", (tmp_reg & USB_DEVICE_ADDRESS_MASK)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->endpointlistaddr); - t = scnprintf(next, size, + seq_printf(m, "USB Endpoint List Address Reg: " "Device Addr is 0x%x\n\n", (tmp_reg & USB_EP_LIST_ADDRESS_MASK)); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->portsc1); - t = scnprintf(next, size, + seq_printf(m, "USB Port Status&Control Reg:\n" "Port Transceiver Type : %s Port Speed: %s\n" "PHY Low Power Suspend: %s Port Reset: %s " @@ -1966,7 +2095,7 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, "Port Enable/Disable Change: %s\n" "Port Enabled/Disabled: %s " "Current Connect Status: %s\n\n", ( { - char *s; + const char *s; switch (tmp_reg & PORTSCX_PTS_FSLS) { case PORTSCX_PTS_UTMI: s = "UTMI"; break; @@ -1977,20 +2106,8 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, default: s = "None"; break; } - s;} ), ( { - char *s; - switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) { - case PORTSCX_PORT_SPEED_FULL: - s = "Full Speed"; break; - case PORTSCX_PORT_SPEED_LOW: - s = "Low Speed"; break; - case PORTSCX_PORT_SPEED_HIGH: - s = "High Speed"; break; - default: - s = "Undefined"; break; - } - s; - } ), + s;} ), + usb_speed_string(portscx_device_speed(tmp_reg)), (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ? "Normal PHY mode" : "Low power mode", (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" : @@ -2004,13 +2121,11 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, "Not correct", (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ? "Attached" : "Not-Att"); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->usbmode); - t = scnprintf(next, size, + seq_printf(m, "USB Mode Reg: Controller Mode is: %s\n\n", ( { - char *s; + const char *s; switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) { case USB_MODE_CTRL_MODE_IDLE: s = "Idle"; break; @@ -2023,101 +2138,87 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count, } s; } )); - size -= t; - next += t; tmp_reg = fsl_readl(&dr_regs->endptsetupstat); - t = scnprintf(next, size, + seq_printf(m, "Endpoint Setup Status Reg: SETUP on ep 0x%x\n\n", (tmp_reg & EP_SETUP_STATUS_MASK)); - size -= t; - next += t; for (i = 0; i < udc->max_ep / 2; i++) { tmp_reg = fsl_readl(&dr_regs->endptctrl[i]); - t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n", - i, tmp_reg); - size -= t; - next += t; + seq_printf(m, "EP Ctrl Reg [0x%x]: = [0x%x]\n", i, tmp_reg); } tmp_reg = fsl_readl(&dr_regs->endpointprime); - t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n\n", tmp_reg); - size -= t; - next += t; + seq_printf(m, "EP Prime Reg = [0x%x]\n\n", tmp_reg); #ifndef CONFIG_ARCH_MXC - tmp_reg = usb_sys_regs->snoop1; - t = scnprintf(next, size, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); - size -= t; - next += t; - - tmp_reg = usb_sys_regs->control; - t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n", - tmp_reg); - size -= t; - next += t; + if (udc->pdata->have_sysif_regs) { + tmp_reg = usb_sys_regs->snoop1; + seq_printf(m, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg); + + tmp_reg = usb_sys_regs->control; + seq_printf(m, "General Control Reg : = [0x%x]\n\n", tmp_reg); + } #endif /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */ ep = &udc->eps[0]; - t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n", + seq_printf(m, "For %s Maxpkt is 0x%x index is 0x%x\n", ep->ep.name, ep_maxpacket(ep), ep_index(ep)); - size -= t; - next += t; if (list_empty(&ep->queue)) { - t = scnprintf(next, size, "its req queue is empty\n\n"); - size -= t; - next += t; + seq_puts(m, "its req queue is empty\n\n"); } else { list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, + seq_printf(m, "req %p actual 0x%x length 0x%x buf %p\n", &req->req, req->req.actual, req->req.length, req->req.buf); - size -= t; - next += t; } } /* other gadget->eplist ep */ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) { - if (ep->desc) { - t = scnprintf(next, size, + if (ep->ep.desc) { + seq_printf(m, "\nFor %s Maxpkt is 0x%x " "index is 0x%x\n", ep->ep.name, ep_maxpacket(ep), ep_index(ep)); - size -= t; - next += t; if (list_empty(&ep->queue)) { - t = scnprintf(next, size, - "its req queue is empty\n\n"); - size -= t; - next += t; + seq_puts(m, "its req queue is empty\n\n"); } else { list_for_each_entry(req, &ep->queue, queue) { - t = scnprintf(next, size, + seq_printf(m, "req %p actual 0x%x length " "0x%x buf %p\n", &req->req, req->req.actual, req->req.length, req->req.buf); - size -= t; - next += t; - } /* end for each_entry of ep req */ - } /* end for else */ - } /* end for if(ep->queue) */ - } /* end (ep->desc) */ + } /* end for each_entry of ep req */ + } /* end for else */ + } /* end for if(ep->queue) */ + } /* end (ep->desc) */ spin_unlock_irqrestore(&udc->lock, flags); + return 0; +} - *eof = 1; - return count - size; +/* + * seq_file wrappers for procfile show routines. + */ +static int fsl_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, fsl_proc_read, NULL); } -#define create_proc_file() create_proc_read_entry(proc_filename, \ - 0, NULL, fsl_proc_read, NULL) +static const struct file_operations fsl_proc_fops = { + .open = fsl_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; +#define create_proc_file() proc_create(proc_filename, 0, NULL, &fsl_proc_fops) #define remove_proc_file() remove_proc_entry(proc_filename, NULL) #else /* !CONFIG_USB_GADGET_DEBUG_FILES */ @@ -2151,14 +2252,12 @@ static int __init struct_udc_setup(struct fsl_udc *udc, struct fsl_usb2_platform_data *pdata; size_t size; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc->phy_mode = pdata->phy_mode; udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); - if (!udc->eps) { - ERR("malloc fsl_ep failed\n"); + if (!udc->eps) return -1; - } /* initialized QHs, take care of alignment */ size = udc->max_ep * sizeof(struct ep_queue_head); @@ -2184,7 +2283,6 @@ static int __init struct_udc_setup(struct fsl_udc *udc, struct fsl_req, req); /* allocate a small amount of memory to get valid address */ udc->status_req->req.buf = kmalloc(8, GFP_KERNEL); - udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf); udc->resume_state = USB_STATE_NOTATTACHED; udc->usb_state = USB_STATE_POWERED; @@ -2215,7 +2313,7 @@ static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index, /* for ep0: maxP defined in desc * for other eps, maxP is set by epautoconfig() called by gadget layer */ - ep->ep.maxpacket = (unsigned short) ~0; + usb_ep_set_maxpacket_limit(&ep->ep, (unsigned short) ~0); /* the queue lists any req for this ep */ INIT_LIST_HEAD(&ep->queue); @@ -2235,36 +2333,45 @@ static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index, */ static int __init fsl_udc_probe(struct platform_device *pdev) { + struct fsl_usb2_platform_data *pdata; struct resource *res; int ret = -ENODEV; unsigned int i; u32 dccparams; - if (strcmp(pdev->name, driver_name)) { - VDBG("Wrong device"); - return -ENODEV; - } - udc_controller = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL); - if (udc_controller == NULL) { - ERR("malloc udc failed\n"); + if (udc_controller == NULL) return -ENOMEM; - } + pdata = dev_get_platdata(&pdev->dev); + udc_controller->pdata = pdata; spin_lock_init(&udc_controller->lock); udc_controller->stopped = 1; +#ifdef CONFIG_USB_OTG + if (pdata->operating_mode == FSL_USB2_DR_OTG) { + udc_controller->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { + ERR("Can't find OTG driver!\n"); + ret = -ENODEV; + goto err_kfree; + } + } +#endif + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { ret = -ENXIO; goto err_kfree; } - if (!request_mem_region(res->start, res->end - res->start + 1, - driver_name)) { - ERR("request mem region for %s failed\n", pdev->name); - ret = -EBUSY; - goto err_kfree; + if (pdata->operating_mode == FSL_USB2_DR_DEVICE) { + if (!request_mem_region(res->start, resource_size(res), + driver_name)) { + ERR("request mem region for %s failed\n", pdev->name); + ret = -EBUSY; + goto err_kfree; + } } dr_regs = ioremap(res->start, resource_size(res)); @@ -2273,9 +2380,22 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_release_mem_region; } + pdata->regs = (void *)dr_regs; + + /* + * do platform specific init: check the clock, grab/config pins, etc. + */ + if (pdata->init && pdata->init(pdev)) { + ret = -ENODEV; + goto err_iounmap_noclk; + } + + /* Set accessors only after pdata->init() ! */ + fsl_set_accessors(pdata); + #ifndef CONFIG_ARCH_MXC - usb_sys_regs = (struct usb_sys_interface *) - ((u32)dr_regs + USB_DR_SYS_OFFSET); + if (pdata->have_sysif_regs) + usb_sys_regs = (void *)dr_regs + USB_DR_SYS_OFFSET; #endif /* Initialize USB clocks */ @@ -2315,15 +2435,19 @@ static int __init fsl_udc_probe(struct platform_device *pdev) goto err_free_irq; } - /* initialize usb hw reg except for regs for EP, - * leave usbintr reg untouched */ - dr_controller_setup(udc_controller); + if (IS_ERR_OR_NULL(udc_controller->transceiver)) { + /* initialize usb hw reg except for regs for EP, + * leave usbintr reg untouched */ + dr_controller_setup(udc_controller); + } - fsl_udc_clk_finalize(pdev); + ret = fsl_udc_clk_finalize(pdev); + if (ret) + goto err_free_irq; /* Setup gadget structure */ udc_controller->gadget.ops = &fsl_gadget_ops; - udc_controller->gadget.is_dualspeed = 1; + udc_controller->gadget.max_speed = USB_SPEED_HIGH; udc_controller->gadget.ep0 = &udc_controller->eps[0].ep; INIT_LIST_HEAD(&udc_controller->gadget.ep_list); udc_controller->gadget.speed = USB_SPEED_UNKNOWN; @@ -2331,11 +2455,10 @@ static int __init fsl_udc_probe(struct platform_device *pdev) /* Setup gadget.dev and register with kernel */ dev_set_name(&udc_controller->gadget.dev, "gadget"); - udc_controller->gadget.dev.release = fsl_udc_release; - udc_controller->gadget.dev.parent = &pdev->dev; - ret = device_register(&udc_controller->gadget.dev); - if (ret < 0) - goto err_free_irq; + udc_controller->gadget.dev.of_node = pdev->dev.of_node; + + if (!IS_ERR_OR_NULL(udc_controller->transceiver)) + udc_controller->gadget.is_otg = 1; /* setup QH and epctrl for ep0 */ ep0_setup(udc_controller); @@ -2345,8 +2468,9 @@ static int __init fsl_udc_probe(struct platform_device *pdev) /* for ep0: the desc defined here; * for other eps, gadget layer called ep_enable with defined desc */ - udc_controller->eps[0].desc = &fsl_ep0_desc; - udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD; + udc_controller->eps[0].ep.desc = &fsl_ep0_desc; + usb_ep_set_maxpacket_limit(&udc_controller->eps[0].ep, + USB_MAX_CTRL_PAYLOAD); /* setup the udc->eps[] for non-control endpoints and link * to gadget.ep_list */ @@ -2365,21 +2489,30 @@ static int __init fsl_udc_probe(struct platform_device *pdev) DTD_ALIGNMENT, UDC_DMA_BOUNDARY); if (udc_controller->td_pool == NULL) { ret = -ENOMEM; - goto err_unregister; + goto err_free_irq; } + + ret = usb_add_gadget_udc_release(&pdev->dev, &udc_controller->gadget, + fsl_udc_release); + if (ret) + goto err_del_udc; + create_proc_file(); return 0; -err_unregister: - device_unregister(&udc_controller->gadget.dev); +err_del_udc: + dma_pool_destroy(udc_controller->td_pool); err_free_irq: free_irq(udc_controller->irq, udc_controller); err_iounmap: + if (pdata->exit) + pdata->exit(pdev); fsl_udc_clk_release(); err_iounmap_noclk: iounmap(dr_regs); err_release_mem_region: - release_mem_region(res->start, res->end - res->start + 1); + if (pdata->operating_mode == FSL_USB2_DR_DEVICE) + release_mem_region(res->start, resource_size(res)); err_kfree: kfree(udc_controller); udc_controller = NULL; @@ -2392,12 +2525,15 @@ err_kfree: static int __exit fsl_udc_remove(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); DECLARE_COMPLETION(done); if (!udc_controller) return -ENODEV; + udc_controller->done = &done; + usb_del_gadget_udc(&udc_controller->gadget); fsl_udc_clk_release(); @@ -2412,12 +2548,19 @@ static int __exit fsl_udc_remove(struct platform_device *pdev) dma_pool_destroy(udc_controller->td_pool); free_irq(udc_controller->irq, udc_controller); iounmap(dr_regs); - release_mem_region(res->start, res->end - res->start + 1); + if (pdata->operating_mode == FSL_USB2_DR_DEVICE) + release_mem_region(res->start, resource_size(res)); - device_unregister(&udc_controller->gadget.dev); /* free udc --wait for the release() finished */ wait_for_completion(&done); + /* + * do platform specific un-initialization: + * release iomux pins, etc. + */ + if (pdata->exit) + pdata->exit(pdev); + return 0; } @@ -2448,36 +2591,91 @@ static int fsl_udc_resume(struct platform_device *pdev) return 0; } +static int fsl_udc_otg_suspend(struct device *dev, pm_message_t state) +{ + struct fsl_udc *udc = udc_controller; + u32 mode, usbcmd; + + mode = fsl_readl(&dr_regs->usbmode) & USB_MODE_CTRL_MODE_MASK; + + pr_debug("%s(): mode 0x%x stopped %d\n", __func__, mode, udc->stopped); + + /* + * If the controller is already stopped, then this must be a + * PM suspend. Remember this fact, so that we will leave the + * controller stopped at PM resume time. + */ + if (udc->stopped) { + pr_debug("gadget already stopped, leaving early\n"); + udc->already_stopped = 1; + return 0; + } + + if (mode != USB_MODE_CTRL_MODE_DEVICE) { + pr_debug("gadget not in device mode, leaving early\n"); + return 0; + } + + /* stop the controller */ + usbcmd = fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP; + fsl_writel(usbcmd, &dr_regs->usbcmd); + + udc->stopped = 1; + + pr_info("USB Gadget suspended\n"); + + return 0; +} + +static int fsl_udc_otg_resume(struct device *dev) +{ + pr_debug("%s(): stopped %d already_stopped %d\n", __func__, + udc_controller->stopped, udc_controller->already_stopped); + + /* + * If the controller was stopped at suspend time, then + * don't resume it now. + */ + if (udc_controller->already_stopped) { + udc_controller->already_stopped = 0; + pr_debug("gadget was already stopped, leaving early\n"); + return 0; + } + + pr_info("USB Gadget resume\n"); + + return fsl_udc_resume(NULL); +} /*------------------------------------------------------------------------- Register entry point for the peripheral controller driver --------------------------------------------------------------------------*/ - +static const struct platform_device_id fsl_udc_devtype[] = { + { + .name = "imx-udc-mx27", + }, { + .name = "imx-udc-mx51", + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, fsl_udc_devtype); static struct platform_driver udc_driver = { - .remove = __exit_p(fsl_udc_remove), + .remove = __exit_p(fsl_udc_remove), + /* Just for FSL i.mx SoC currently */ + .id_table = fsl_udc_devtype, /* these suspend and resume are not usb suspend and resume */ - .suspend = fsl_udc_suspend, - .resume = fsl_udc_resume, - .driver = { - .name = (char *)driver_name, - .owner = THIS_MODULE, + .suspend = fsl_udc_suspend, + .resume = fsl_udc_resume, + .driver = { + .name = driver_name, + .owner = THIS_MODULE, + /* udc suspend/resume called from OTG driver */ + .suspend = fsl_udc_otg_suspend, + .resume = fsl_udc_otg_resume, }, }; -static int __init udc_init(void) -{ - printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION); - return platform_driver_probe(&udc_driver, fsl_udc_probe); -} - -module_init(udc_init); - -static void __exit udc_exit(void) -{ - platform_driver_unregister(&udc_driver); - printk(KERN_WARNING "%s unregistered\n", driver_desc); -} - -module_exit(udc_exit); +module_platform_driver_probe(udc_driver, fsl_udc_probe); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_AUTHOR(DRIVER_AUTHOR); |