X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Fat91_udc.c;h=a6adf7e0f6f8de4cc49595211dc5de7e6d4e779e;hb=54d2bc068fd21bcb096660938bce7c7265613a24;hp=81656337381fa1ba8ca53eddcfe67d29483ab61e;hpb=6bea476cf628eb7bb18a036ac6a8fed1ad319951;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 8165633..a6adf7e 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -30,27 +30,27 @@ #include #include #include -#include #include -#include #include #include #include #include #include #include -#include -#include +#include +#include #include +#include #include #include #include #include -#include #include #include +#include +#include #include "at91_udc.h" @@ -78,27 +78,11 @@ static const char driver_name [] = "at91_udc"; static const char ep0name[] = "ep0"; -/*-------------------------------------------------------------------------*/ - -/* - * Read from a UDP register. - */ -static inline unsigned long at91_udp_read(unsigned int reg) -{ - void __iomem *udp_base = (void __iomem *)AT91_VA_BASE_UDP; - - return __raw_readl(udp_base + reg); -} - -/* - * Write to a UDP register. - */ -static inline void at91_udp_write(unsigned int reg, unsigned long value) -{ - void __iomem *udp_base = (void __iomem *)AT91_VA_BASE_UDP; - __raw_writel(value, udp_base + reg); -} +#define at91_udp_read(dev, reg) \ + __raw_readl((dev)->udp_baseaddr + (reg)) +#define at91_udp_write(dev, reg, val) \ + __raw_writel((val), (dev)->udp_baseaddr + (reg)) /*-------------------------------------------------------------------------*/ @@ -210,13 +194,13 @@ static int proc_udc_show(struct seq_file *s, void *unused) return 0; } - tmp = at91_udp_read(AT91_UDP_FRM_NUM); + tmp = at91_udp_read(udc, AT91_UDP_FRM_NUM); seq_printf(s, "frame %05x:%s%s frame=%d\n", tmp, (tmp & AT91_UDP_FRM_OK) ? " ok" : "", (tmp & AT91_UDP_FRM_ERR) ? " err" : "", (tmp & AT91_UDP_NUM)); - tmp = at91_udp_read(AT91_UDP_GLB_STAT); + tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT); seq_printf(s, "glbstate %02x:%s" FOURBITS "\n", tmp, (tmp & AT91_UDP_RMWUPE) ? " rmwupe" : "", (tmp & AT91_UDP_RSMINPR) ? " rsminpr" : "", @@ -224,13 +208,13 @@ static int proc_udc_show(struct seq_file *s, void *unused) (tmp & AT91_UDP_CONFG) ? " confg" : "", (tmp & AT91_UDP_FADDEN) ? " fadden" : ""); - tmp = at91_udp_read(AT91_UDP_FADDR); + tmp = at91_udp_read(udc, AT91_UDP_FADDR); seq_printf(s, "faddr %03x:%s fadd=%d\n", tmp, (tmp & AT91_UDP_FEN) ? " fen" : "", (tmp & AT91_UDP_FADD)); - proc_irq_show(s, "imr ", at91_udp_read(AT91_UDP_IMR)); - proc_irq_show(s, "isr ", at91_udp_read(AT91_UDP_ISR)); + proc_irq_show(s, "imr ", at91_udp_read(udc, AT91_UDP_IMR)); + proc_irq_show(s, "isr ", at91_udp_read(udc, AT91_UDP_ISR)); if (udc->enabled && udc->vbus) { proc_ep_show(s, &udc->ep[0]); @@ -286,6 +270,7 @@ static inline void remove_debug_file(struct at91_udc *udc) {} static void done(struct at91_ep *ep, struct at91_request *req, int status) { unsigned stopped = ep->stopped; + struct at91_udc *udc = ep->udc; list_del_init(&req->queue); if (req->req.status == -EINPROGRESS) @@ -301,7 +286,7 @@ static void done(struct at91_ep *ep, struct at91_request *req, int status) /* ep0 is always ready; other endpoints need a non-empty queue */ if (list_empty(&ep->queue) && ep->int_mask != (1 << 0)) - at91_udp_write(AT91_UDP_IDR, ep->int_mask); + at91_udp_write(udc, AT91_UDP_IDR, ep->int_mask); } /*-------------------------------------------------------------------------*/ @@ -554,8 +539,8 @@ ok: * reset/init endpoint fifo. NOTE: leaves fifo_bank alone, * since endpoint resets don't reset hw pingpong state. */ - at91_udp_write(AT91_UDP_RST_EP, ep->int_mask); - at91_udp_write(AT91_UDP_RST_EP, 0); + at91_udp_write(dev, AT91_UDP_RST_EP, ep->int_mask); + at91_udp_write(dev, AT91_UDP_RST_EP, 0); local_irq_restore(flags); return 0; @@ -564,6 +549,7 @@ ok: static int at91_ep_disable (struct usb_ep * _ep) { struct at91_ep *ep = container_of(_ep, struct at91_ep, ep); + struct at91_udc *udc = ep->udc; unsigned long flags; if (ep == &ep->udc->ep[0]) @@ -579,8 +565,8 @@ static int at91_ep_disable (struct usb_ep * _ep) /* reset fifos and endpoint */ if (ep->udc->clocked) { - at91_udp_write(AT91_UDP_RST_EP, ep->int_mask); - at91_udp_write(AT91_UDP_RST_EP, 0); + at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); + at91_udp_write(udc, AT91_UDP_RST_EP, 0); __raw_writel(0, ep->creg); } @@ -615,25 +601,6 @@ static void at91_ep_free_request(struct usb_ep *_ep, struct usb_request *_req) kfree(req); } -static void *at91_ep_alloc_buffer( - struct usb_ep *_ep, - unsigned bytes, - dma_addr_t *dma, - gfp_t gfp_flags) -{ - *dma = ~0; - return kmalloc(bytes, gfp_flags); -} - -static void at91_ep_free_buffer( - struct usb_ep *ep, - void *buf, - dma_addr_t dma, - unsigned bytes) -{ - kfree(buf); -} - static int at91_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) { @@ -695,10 +662,10 @@ static int at91_ep_queue(struct usb_ep *_ep, * reconfigures the endpoints. */ if (dev->wait_for_config_ack) { - tmp = at91_udp_read(AT91_UDP_GLB_STAT); + tmp = at91_udp_read(dev, AT91_UDP_GLB_STAT); tmp ^= AT91_UDP_CONFG; VDBG("toggle config\n"); - at91_udp_write(AT91_UDP_GLB_STAT, tmp); + at91_udp_write(dev, AT91_UDP_GLB_STAT, tmp); } if (req->req.length == 0) { ep0_in_status: @@ -727,7 +694,7 @@ ep0_in_status: if (req && !status) { list_add_tail (&req->queue, &ep->queue); - at91_udp_write(AT91_UDP_IER, ep->int_mask); + at91_udp_write(dev, AT91_UDP_IER, ep->int_mask); } done: local_irq_restore(flags); @@ -758,6 +725,7 @@ static int at91_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req) static int at91_ep_set_halt(struct usb_ep *_ep, int value) { struct at91_ep *ep = container_of(_ep, struct at91_ep, ep); + struct at91_udc *udc = ep->udc; u32 __iomem *creg; u32 csr; unsigned long flags; @@ -785,8 +753,8 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value) csr |= AT91_UDP_FORCESTALL; VDBG("halt %s\n", ep->ep.name); } else { - at91_udp_write(AT91_UDP_RST_EP, ep->int_mask); - at91_udp_write(AT91_UDP_RST_EP, 0); + at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); + at91_udp_write(udc, AT91_UDP_RST_EP, 0); csr &= ~AT91_UDP_FORCESTALL; } __raw_writel(csr, creg); @@ -796,13 +764,11 @@ static int at91_ep_set_halt(struct usb_ep *_ep, int value) return status; } -static struct usb_ep_ops at91_ep_ops = { +static const struct usb_ep_ops at91_ep_ops = { .enable = at91_ep_enable, .disable = at91_ep_disable, .alloc_request = at91_ep_alloc_request, .free_request = at91_ep_free_request, - .alloc_buffer = at91_ep_alloc_buffer, - .free_buffer = at91_ep_free_buffer, .queue = at91_ep_queue, .dequeue = at91_ep_dequeue, .set_halt = at91_ep_set_halt, @@ -813,9 +779,11 @@ static struct usb_ep_ops at91_ep_ops = { static int at91_get_frame(struct usb_gadget *gadget) { + struct at91_udc *udc = to_udc(gadget); + if (!to_udc(gadget)->clocked) return -EINVAL; - return at91_udp_read(AT91_UDP_FRM_NUM) & AT91_UDP_NUM; + return at91_udp_read(udc, AT91_UDP_FRM_NUM) & AT91_UDP_NUM; } static int at91_wakeup(struct usb_gadget *gadget) @@ -833,11 +801,11 @@ static int at91_wakeup(struct usb_gadget *gadget) /* NOTE: some "early versions" handle ESR differently ... */ - glbstate = at91_udp_read(AT91_UDP_GLB_STAT); + glbstate = at91_udp_read(udc, AT91_UDP_GLB_STAT); if (!(glbstate & AT91_UDP_ESR)) goto done; glbstate |= AT91_UDP_ESR; - at91_udp_write(AT91_UDP_GLB_STAT, glbstate); + at91_udp_write(udc, AT91_UDP_GLB_STAT, glbstate); done: local_irq_restore(flags); @@ -861,6 +829,7 @@ static void udc_reinit(struct at91_udc *udc) ep->stopped = 0; ep->fifo_bank = 0; ep->ep.maxpacket = ep->maxpacket; + ep->creg = (void __iomem *) udc->udp_baseaddr + AT91_UDP_CSR(i); // initialiser une queue par endpoint INIT_LIST_HEAD(&ep->queue); } @@ -915,14 +884,41 @@ static void pullup(struct at91_udc *udc, int is_on) if (!udc->enabled || !udc->vbus) is_on = 0; DBG("%sactive\n", is_on ? "" : "in"); + if (is_on) { clk_on(udc); - at91_udp_write(AT91_UDP_TXVC, 0); - at91_set_gpio_value(udc->board.pullup_pin, 1); - } else { + at91_udp_write(udc, AT91_UDP_TXVC, 0); + if (cpu_is_at91rm9200()) + at91_set_gpio_value(udc->board.pullup_pin, 1); + else if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) { + u32 txvc = at91_udp_read(udc, AT91_UDP_TXVC); + + txvc |= AT91_UDP_TXVC_PUON; + at91_udp_write(udc, AT91_UDP_TXVC, txvc); + } else if (cpu_is_at91sam9261()) { + u32 usbpucr; + + usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); + usbpucr |= AT91_MATRIX_USBPUCR_PUON; + at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr); + } + } else { stop_activity(udc); - at91_udp_write(AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); - at91_set_gpio_value(udc->board.pullup_pin, 0); + at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); + if (cpu_is_at91rm9200()) + at91_set_gpio_value(udc->board.pullup_pin, 0); + else if (cpu_is_at91sam9260() || cpu_is_at91sam9263()) { + u32 txvc = at91_udp_read(udc, AT91_UDP_TXVC); + + txvc &= ~AT91_UDP_TXVC_PUON; + at91_udp_write(udc, AT91_UDP_TXVC, txvc); + } else if (cpu_is_at91sam9261()) { + u32 usbpucr; + + usbpucr = at91_sys_read(AT91_MATRIX_USBPUCR); + usbpucr &= ~AT91_MATRIX_USBPUCR_PUON; + at91_sys_write(AT91_MATRIX_USBPUCR, usbpucr); + } clk_off(udc); } } @@ -936,7 +932,10 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active) // VDBG("vbus %s\n", is_active ? "on" : "off"); local_irq_save(flags); udc->vbus = (is_active != 0); - pullup(udc, is_active); + if (udc->driver) + pullup(udc, is_active); + else + pullup(udc, 0); local_irq_restore(flags); return 0; } @@ -1086,7 +1085,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8) | USB_REQ_SET_CONFIGURATION: - tmp = at91_udp_read(AT91_UDP_GLB_STAT) & AT91_UDP_CONFG; + tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT) & AT91_UDP_CONFG; if (pkt.r.wValue) udc->wait_for_config_ack = (tmp == 0); else @@ -1103,7 +1102,7 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) case ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8) | USB_REQ_GET_STATUS: tmp = (udc->selfpowered << USB_DEVICE_SELF_POWERED); - if (at91_udp_read(AT91_UDP_GLB_STAT) & AT91_UDP_ESR) + if (at91_udp_read(udc, AT91_UDP_GLB_STAT) & AT91_UDP_ESR) tmp |= (1 << USB_DEVICE_REMOTE_WAKEUP); PACKET("get device status\n"); __raw_writeb(tmp, dreg); @@ -1114,17 +1113,17 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) | USB_REQ_SET_FEATURE: if (w_value != USB_DEVICE_REMOTE_WAKEUP) goto stall; - tmp = at91_udp_read(AT91_UDP_GLB_STAT); + tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT); tmp |= AT91_UDP_ESR; - at91_udp_write(AT91_UDP_GLB_STAT, tmp); + at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp); goto succeed; case ((USB_TYPE_STANDARD|USB_RECIP_DEVICE) << 8) | USB_REQ_CLEAR_FEATURE: if (w_value != USB_DEVICE_REMOTE_WAKEUP) goto stall; - tmp = at91_udp_read(AT91_UDP_GLB_STAT); + tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT); tmp &= ~AT91_UDP_ESR; - at91_udp_write(AT91_UDP_GLB_STAT, tmp); + at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp); goto succeed; /* @@ -1206,8 +1205,8 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) } else if (ep->is_in) goto stall; - at91_udp_write(AT91_UDP_RST_EP, ep->int_mask); - at91_udp_write(AT91_UDP_RST_EP, 0); + at91_udp_write(udc, AT91_UDP_RST_EP, ep->int_mask); + at91_udp_write(udc, AT91_UDP_RST_EP, 0); tmp = __raw_readl(ep->creg); tmp |= CLR_FX; tmp &= ~(SET_FX | AT91_UDP_FORCESTALL); @@ -1222,7 +1221,10 @@ static void handle_setup(struct at91_udc *udc, struct at91_ep *ep, u32 csr) #undef w_length /* pass request up to the gadget driver */ - status = udc->driver->setup(&udc->gadget, &pkt.r); + if (udc->driver) + status = udc->driver->setup(&udc->gadget, &pkt.r); + else + status = -ENODEV; if (status < 0) { stall: VDBG("req %02x.%02x protocol STALL; stat %d\n", @@ -1300,13 +1302,13 @@ static void handle_ep0(struct at91_udc *udc) if (udc->wait_for_addr_ack) { u32 tmp; - at91_udp_write(AT91_UDP_FADDR, + at91_udp_write(udc, AT91_UDP_FADDR, AT91_UDP_FEN | udc->addr); - tmp = at91_udp_read(AT91_UDP_GLB_STAT); + tmp = at91_udp_read(udc, AT91_UDP_GLB_STAT); tmp &= ~AT91_UDP_FADDEN; if (udc->addr) tmp |= AT91_UDP_FADDEN; - at91_udp_write(AT91_UDP_GLB_STAT, tmp); + at91_udp_write(udc, AT91_UDP_GLB_STAT, tmp); udc->wait_for_addr_ack = 0; VDBG("address %d\n", udc->addr); @@ -1374,28 +1376,28 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc) while (rescans--) { u32 status; - status = at91_udp_read(AT91_UDP_ISR) - & at91_udp_read(AT91_UDP_IMR); + status = at91_udp_read(udc, AT91_UDP_ISR) + & at91_udp_read(udc, AT91_UDP_IMR); if (!status) break; /* USB reset irq: not maskable */ if (status & AT91_UDP_ENDBUSRES) { - at91_udp_write(AT91_UDP_IDR, ~MINIMUS_INTERRUPTUS); - at91_udp_write(AT91_UDP_IER, MINIMUS_INTERRUPTUS); + at91_udp_write(udc, AT91_UDP_IDR, ~MINIMUS_INTERRUPTUS); + at91_udp_write(udc, AT91_UDP_IER, MINIMUS_INTERRUPTUS); /* Atmel code clears this irq twice */ - at91_udp_write(AT91_UDP_ICR, AT91_UDP_ENDBUSRES); - at91_udp_write(AT91_UDP_ICR, AT91_UDP_ENDBUSRES); + at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_ENDBUSRES); + at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_ENDBUSRES); VDBG("end bus reset\n"); udc->addr = 0; stop_activity(udc); /* enable ep0 */ - at91_udp_write(AT91_UDP_CSR(0), + at91_udp_write(udc, AT91_UDP_CSR(0), AT91_UDP_EPEDS | AT91_UDP_EPTYPE_CTRL); udc->gadget.speed = USB_SPEED_FULL; udc->suspended = 0; - at91_udp_write(AT91_UDP_IER, AT91_UDP_EP(0)); + at91_udp_write(udc, AT91_UDP_IER, AT91_UDP_EP(0)); /* * NOTE: this driver keeps clocks off unless the @@ -1406,9 +1408,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc) /* host initiated suspend (3+ms bus idle) */ } else if (status & AT91_UDP_RXSUSP) { - at91_udp_write(AT91_UDP_IDR, AT91_UDP_RXSUSP); - at91_udp_write(AT91_UDP_IER, AT91_UDP_RXRSM); - at91_udp_write(AT91_UDP_ICR, AT91_UDP_RXSUSP); + at91_udp_write(udc, AT91_UDP_IDR, AT91_UDP_RXSUSP); + at91_udp_write(udc, AT91_UDP_IER, AT91_UDP_RXRSM); + at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_RXSUSP); // VDBG("bus suspend\n"); if (udc->suspended) continue; @@ -1425,9 +1427,9 @@ static irqreturn_t at91_udc_irq (int irq, void *_udc) /* host initiated resume */ } else if (status & AT91_UDP_RXRSM) { - at91_udp_write(AT91_UDP_IDR, AT91_UDP_RXRSM); - at91_udp_write(AT91_UDP_IER, AT91_UDP_RXSUSP); - at91_udp_write(AT91_UDP_ICR, AT91_UDP_RXRSM); + at91_udp_write(udc, AT91_UDP_IDR, AT91_UDP_RXRSM); + at91_udp_write(udc, AT91_UDP_IER, AT91_UDP_RXSUSP); + at91_udp_write(udc, AT91_UDP_ICR, AT91_UDP_RXRSM); // VDBG("bus resume\n"); if (!udc->suspended) continue; @@ -1485,8 +1487,6 @@ static struct at91_udc controller = { }, .udc = &controller, .maxpacket = 8, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(0)), .int_mask = 1 << 0, }, .ep[1] = { @@ -1497,8 +1497,6 @@ static struct at91_udc controller = { .udc = &controller, .is_pingpong = 1, .maxpacket = 64, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(1)), .int_mask = 1 << 1, }, .ep[2] = { @@ -1509,8 +1507,6 @@ static struct at91_udc controller = { .udc = &controller, .is_pingpong = 1, .maxpacket = 64, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(2)), .int_mask = 1 << 2, }, .ep[3] = { @@ -1521,8 +1517,6 @@ static struct at91_udc controller = { }, .udc = &controller, .maxpacket = 8, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(3)), .int_mask = 1 << 3, }, .ep[4] = { @@ -1533,8 +1527,6 @@ static struct at91_udc controller = { .udc = &controller, .is_pingpong = 1, .maxpacket = 256, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(4)), .int_mask = 1 << 4, }, .ep[5] = { @@ -1545,8 +1537,6 @@ static struct at91_udc controller = { .udc = &controller, .is_pingpong = 1, .maxpacket = 256, - .creg = (void __iomem *)(AT91_VA_BASE_UDP - + AT91_UDP_CSR(5)), .int_mask = 1 << 5, }, /* ep6 and ep7 are also reserved (custom silicon might use them) */ @@ -1572,7 +1562,7 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver) int retval; if (!driver - || driver->speed != USB_SPEED_FULL + || driver->speed < USB_SPEED_FULL || !driver->bind || !driver->setup) { DBG("bad parameter.\n"); @@ -1594,6 +1584,10 @@ int usb_gadget_register_driver (struct usb_gadget_driver *driver) if (retval) { DBG("driver->bind() returned %d\n", retval); udc->driver = NULL; + udc->gadget.dev.driver = NULL; + udc->gadget.dev.driver_data = NULL; + udc->enabled = 0; + udc->selfpowered = 0; return retval; } @@ -1615,7 +1609,7 @@ int usb_gadget_unregister_driver (struct usb_gadget_driver *driver) local_irq_disable(); udc->enabled = 0; - at91_udp_write(AT91_UDP_IDR, ~0); + at91_udp_write(udc, AT91_UDP_IDR, ~0); pullup(udc, 0); local_irq_enable(); @@ -1635,11 +1629,12 @@ static void at91udc_shutdown(struct platform_device *dev) pullup(platform_get_drvdata(dev), 0); } -static int __devinit at91udc_probe(struct platform_device *pdev) +static int __init at91udc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct at91_udc *udc; int retval; + struct resource *res; if (!dev->platform_data) { /* small (so we copy it) but critical! */ @@ -1657,7 +1652,13 @@ static int __devinit at91udc_probe(struct platform_device *pdev) return -ENODEV; } - if (!request_mem_region(AT91RM9200_BASE_UDP, SZ_16K, driver_name)) { + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -ENXIO; + + if (!request_mem_region(res->start, + res->end - res->start + 1, + driver_name)) { DBG("someone's using UDC memory\n"); return -EBUSY; } @@ -1667,15 +1668,23 @@ static int __devinit at91udc_probe(struct platform_device *pdev) udc->gadget.dev.parent = dev; udc->board = *(struct at91_udc_data *) dev->platform_data; udc->pdev = pdev; - udc_reinit(udc); udc->enabled = 0; + udc->udp_baseaddr = ioremap(res->start, res->end - res->start + 1); + if (!udc->udp_baseaddr) { + release_mem_region(res->start, res->end - res->start + 1); + return -ENOMEM; + } + + udc_reinit(udc); + /* get interface and function clocks */ udc->iclk = clk_get(dev, "udc_clk"); udc->fclk = clk_get(dev, "udpck"); if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) { DBG("clocks missing\n"); - return -ENODEV; + retval = -ENODEV; + goto fail0; } retval = device_register(&udc->gadget.dev); @@ -1684,8 +1693,10 @@ static int __devinit at91udc_probe(struct platform_device *pdev) /* don't do anything until we have both gadget driver and VBUS */ clk_enable(udc->iclk); - at91_udp_write(AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); - at91_udp_write(AT91_UDP_IDR, 0xffffffff); + at91_udp_write(udc, AT91_UDP_TXVC, AT91_UDP_TXVC_TXVDIS); + at91_udp_write(udc, AT91_UDP_IDR, 0xffffffff); + /* Clear all pending interrupts - UDP may be used by bootloader. */ + at91_udp_write(udc, AT91_UDP_ICR, 0xffffffff); clk_disable(udc->iclk); /* request UDC and maybe VBUS irqs */ @@ -1697,6 +1708,11 @@ static int __devinit at91udc_probe(struct platform_device *pdev) goto fail1; } if (udc->board.vbus_pin > 0) { + /* + * Get the initial state of VBUS - we cannot expect + * a pending interrupt. + */ + udc->vbus = at91_get_gpio_value(udc->board.vbus_pin); if (request_irq(udc->board.vbus_pin, at91_vbus_irq, IRQF_DISABLED, driver_name, udc)) { DBG("request vbus irq %d failed\n", @@ -1719,14 +1735,15 @@ static int __devinit at91udc_probe(struct platform_device *pdev) fail1: device_unregister(&udc->gadget.dev); fail0: - release_mem_region(AT91RM9200_BASE_UDP, SZ_16K); + release_mem_region(res->start, res->end - res->start + 1); DBG("%s probe failed, %d\n", driver_name, retval); return retval; } -static int __devexit at91udc_remove(struct platform_device *pdev) +static int __exit at91udc_remove(struct platform_device *pdev) { struct at91_udc *udc = platform_get_drvdata(pdev); + struct resource *res; DBG("remove\n"); @@ -1741,7 +1758,10 @@ static int __devexit at91udc_remove(struct platform_device *pdev) free_irq(udc->board.vbus_pin, udc); free_irq(udc->udp_irq, udc); device_unregister(&udc->gadget.dev); - release_mem_region(AT91RM9200_BASE_UDP, SZ_16K); + + iounmap(udc->udp_baseaddr); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, res->end - res->start + 1); clk_put(udc->iclk); clk_put(udc->fclk); @@ -1764,16 +1784,13 @@ static int at91udc_suspend(struct platform_device *pdev, pm_message_t mesg) || !wake || at91_suspend_entering_slow_clock()) { pullup(udc, 0); - disable_irq_wake(udc->udp_irq); + wake = 0; } else enable_irq_wake(udc->udp_irq); - if (udc->board.vbus_pin > 0) { - if (wake) - enable_irq_wake(udc->board.vbus_pin); - else - disable_irq_wake(udc->board.vbus_pin); - } + udc->active_suspend = wake; + if (udc->board.vbus_pin > 0 && wake) + enable_irq_wake(udc->board.vbus_pin); return 0; } @@ -1781,8 +1798,14 @@ static int at91udc_resume(struct platform_device *pdev) { struct at91_udc *udc = platform_get_drvdata(pdev); + if (udc->board.vbus_pin > 0 && udc->active_suspend) + disable_irq_wake(udc->board.vbus_pin); + /* maybe reconnect to host; if so, clocks on */ - pullup(udc, 1); + if (udc->active_suspend) + disable_irq_wake(udc->udp_irq); + else + pullup(udc, 1); return 0; } #else @@ -1790,9 +1813,8 @@ static int at91udc_resume(struct platform_device *pdev) #define at91udc_resume NULL #endif -static struct platform_driver at91_udc = { - .probe = at91udc_probe, - .remove = __devexit_p(at91udc_remove), +static struct platform_driver at91_udc_driver = { + .remove = __exit_p(at91udc_remove), .shutdown = at91udc_shutdown, .suspend = at91udc_suspend, .resume = at91udc_resume, @@ -1802,15 +1824,15 @@ static struct platform_driver at91_udc = { }, }; -static int __devinit udc_init_module(void) +static int __init udc_init_module(void) { - return platform_driver_register(&at91_udc); + return platform_driver_probe(&at91_udc_driver, at91udc_probe); } module_init(udc_init_module); -static void __devexit udc_exit_module(void) +static void __exit udc_exit_module(void) { - platform_driver_unregister(&at91_udc); + platform_driver_unregister(&at91_udc_driver); } module_exit(udc_exit_module);