--- /dev/null
+From 5185c91385d73cdf79836eb8548e4726e43ae831 Mon Sep 17 00:00:00 2001
+From: Tim Harvey <tharvey@gateworks.com>
+Date: Mon, 23 May 2016 06:58:41 -0700
+Subject: [PATCH] usb: gadget: net2280: add USB2380 support
+
+The PLX USB2380 is a PCIe version of the NET2280 and behaves more like the
+USB338x but without the USB3.0 superspeed support.
+
+This was tested with g_ether, g_serial, g_mass_storage on a Gateworks
+Ventana GW2383.
+
+Cc: Justin DeFields <justindefields@gmail.com>
+Signed-off-by: Tim Harvey <tharvey@gateworks.com>
+Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
+---
+ drivers/usb/gadget/udc/Kconfig | 4 +++-
+ drivers/usb/gadget/udc/net2280.c | 51 +++++++++++++++++++++++-----------------
+ drivers/usb/gadget/udc/net2280.h | 1 +
+ 3 files changed, 34 insertions(+), 22 deletions(-)
+
+diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
+index 7c28941..658b8da 100644
+--- a/drivers/usb/gadget/udc/Kconfig
++++ b/drivers/usb/gadget/udc/Kconfig
+@@ -312,7 +312,7 @@ config USB_NET2272_DMA
+ If unsure, say "N" here. The driver works fine in PIO mode.
+
+ config USB_NET2280
+- tristate "NetChip 228x / PLX USB338x"
++ tristate "NetChip NET228x / PLX USB3x8x"
+ depends on PCI
+ help
+ NetChip 2280 / 2282 is a PCI based USB peripheral controller which
+@@ -322,6 +322,8 @@ config USB_NET2280
+ (for control transfers) and several endpoints with dedicated
+ functions.
+
++ PLX 2380 is a PCIe version of the PLX 2380.
++
+ PLX 3380 / 3382 is a PCIe based USB peripheral controller which
+ supports full, high speed USB 2.0 and super speed USB 3.0
+ data transfers.
+diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
+index c894b94..614ab951 100644
+--- a/drivers/usb/gadget/udc/net2280.c
++++ b/drivers/usb/gadget/udc/net2280.c
+@@ -211,7 +211,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+ goto print_err;
+ }
+
+- if (dev->quirks & PLX_SUPERSPEED) {
++ if (dev->quirks & PLX_PCIE) {
+ if ((desc->bEndpointAddress & 0x0f) >= 0x0c) {
+ ret = -EDOM;
+ goto print_err;
+@@ -245,7 +245,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+ /* set type, direction, address; reset fifo counters */
+ writel(BIT(FIFO_FLUSH), &ep->regs->ep_stat);
+
+- if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
++ if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
+ tmp = readl(&ep->cfg->ep_cfg);
+ /* If USB ep number doesn't match hardware ep number */
+ if ((tmp & 0xf) != usb_endpoint_num(desc)) {
+@@ -316,7 +316,7 @@ net2280_enable(struct usb_ep *_ep, const struct usb_endpoint_descriptor *desc)
+ BIT(CLEAR_NAK_OUT_PACKETS_MODE), &ep->regs->ep_rsp);
+ }
+
+- if (dev->quirks & PLX_SUPERSPEED)
++ if (dev->quirks & PLX_PCIE)
+ ep_clear_seqnum(ep);
+ writel(tmp, &ep->cfg->ep_cfg);
+
+@@ -527,7 +527,7 @@ static int net2280_disable(struct usb_ep *_ep)
+ spin_lock_irqsave(&ep->dev->lock, flags);
+ nuke(ep);
+
+- if (ep->dev->quirks & PLX_SUPERSPEED)
++ if (ep->dev->quirks & PLX_PCIE)
+ ep_reset_338x(ep->dev->regs, ep);
+ else
+ ep_reset_228x(ep->dev->regs, ep);
+@@ -862,7 +862,7 @@ static void start_queue(struct net2280_ep *ep, u32 dmactl, u32 td_dma)
+ writel(readl(&dma->dmastat), &dma->dmastat);
+
+ writel(td_dma, &dma->dmadesc);
+- if (ep->dev->quirks & PLX_SUPERSPEED)
++ if (ep->dev->quirks & PLX_PCIE)
+ dmactl |= BIT(DMA_REQUEST_OUTSTANDING);
+ writel(dmactl, &dma->dmactl);
+
+@@ -1046,7 +1046,7 @@ net2280_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+
+ /* kickstart this i/o queue? */
+ if (list_empty(&ep->queue) && !ep->stopped &&
+- !((dev->quirks & PLX_SUPERSPEED) && ep->dma &&
++ !((dev->quirks & PLX_PCIE) && ep->dma &&
+ (readl(&ep->regs->ep_rsp) & BIT(CLEAR_ENDPOINT_HALT)))) {
+
+ /* use DMA if the endpoint supports it, else pio */
+@@ -1169,7 +1169,7 @@ static void scan_dma_completions(struct net2280_ep *ep)
+ break;
+ } else if (!ep->is_in &&
+ (req->req.length % ep->ep.maxpacket) &&
+- !(ep->dev->quirks & PLX_SUPERSPEED)) {
++ !(ep->dev->quirks & PLX_PCIE)) {
+
+ tmp = readl(&ep->regs->ep_stat);
+ /* AVOID TROUBLE HERE by not issuing short reads from
+@@ -1367,7 +1367,7 @@ net2280_set_halt_and_wedge(struct usb_ep *_ep, int value, int wedged)
+ ep->wedged = 1;
+ } else {
+ clear_halt(ep);
+- if (ep->dev->quirks & PLX_SUPERSPEED &&
++ if (ep->dev->quirks & PLX_PCIE &&
+ !list_empty(&ep->queue) && ep->td_dma)
+ restart_dma(ep);
+ ep->wedged = 0;
+@@ -2394,7 +2394,7 @@ static int net2280_start(struct usb_gadget *_gadget,
+ */
+ net2280_led_active(dev, 1);
+
+- if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
++ if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
+ defect7374_enable_data_eps_zero(dev);
+
+ ep0_start(dev);
+@@ -3063,7 +3063,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+ }
+ ep->stopped = 0;
+ dev->protocol_stall = 0;
+- if (!(dev->quirks & PLX_SUPERSPEED)) {
++ if (!(dev->quirks & PLX_PCIE)) {
+ if (ep->dev->quirks & PLX_2280)
+ tmp = BIT(FIFO_OVERFLOW) |
+ BIT(FIFO_UNDERFLOW);
+@@ -3090,7 +3090,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+ cpu_to_le32s(&u.raw[0]);
+ cpu_to_le32s(&u.raw[1]);
+
+- if ((dev->quirks & PLX_SUPERSPEED) && !dev->bug7734_patched)
++ if ((dev->quirks & PLX_PCIE) && !dev->bug7734_patched)
+ defect7374_workaround(dev, u.r);
+
+ tmp = 0;
+@@ -3173,7 +3173,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+ } else {
+ ep_vdbg(dev, "%s clear halt\n", e->ep.name);
+ clear_halt(e);
+- if ((ep->dev->quirks & PLX_SUPERSPEED) &&
++ if ((ep->dev->quirks & PLX_PCIE) &&
+ !list_empty(&e->queue) && e->td_dma)
+ restart_dma(e);
+ }
+@@ -3195,7 +3195,7 @@ static void handle_stat0_irqs(struct net2280 *dev, u32 stat)
+ if (e->ep.name == ep0name)
+ goto do_stall;
+ set_halt(e);
+- if ((dev->quirks & PLX_SUPERSPEED) && e->dma)
++ if ((dev->quirks & PLX_PCIE) && e->dma)
+ abort_dma(e);
+ allow_status(ep);
+ ep_vdbg(dev, "%s set halt\n", ep->ep.name);
+@@ -3234,7 +3234,7 @@ do_stall:
+ #undef w_length
+
+ next_endpoints:
+- if ((dev->quirks & PLX_SUPERSPEED) && dev->enhanced_mode) {
++ if ((dev->quirks & PLX_PCIE) && dev->enhanced_mode) {
+ u32 mask = (BIT(ENDPOINT_0_INTERRUPT) |
+ USB3380_IRQSTAT0_EP_INTR_MASK_IN |
+ USB3380_IRQSTAT0_EP_INTR_MASK_OUT);
+@@ -3399,7 +3399,7 @@ __acquires(dev->lock)
+ writel(tmp, &dma->dmastat);
+
+ /* dma sync*/
+- if (dev->quirks & PLX_SUPERSPEED) {
++ if (dev->quirks & PLX_PCIE) {
+ u32 r_dmacount = readl(&dma->dmacount);
+ if (!ep->is_in && (r_dmacount & 0x00FFFFFF) &&
+ (tmp & BIT(DMA_TRANSACTION_DONE_INTERRUPT)))
+@@ -3468,7 +3468,7 @@ static irqreturn_t net2280_irq(int irq, void *_dev)
+ /* control requests and PIO */
+ handle_stat0_irqs(dev, readl(&dev->regs->irqstat0));
+
+- if (dev->quirks & PLX_SUPERSPEED) {
++ if (dev->quirks & PLX_PCIE) {
+ /* re-enable interrupt to trigger any possible new interrupt */
+ u32 pciirqenb1 = readl(&dev->regs->pciirqenb1);
+ writel(pciirqenb1 & 0x7FFFFFFF, &dev->regs->pciirqenb1);
+@@ -3513,7 +3513,7 @@ static void net2280_remove(struct pci_dev *pdev)
+ }
+ if (dev->got_irq)
+ free_irq(pdev->irq, dev);
+- if (dev->quirks & PLX_SUPERSPEED)
++ if (dev->quirks & PLX_PCIE)
+ pci_disable_msi(pdev);
+ if (dev->regs)
+ iounmap(dev->regs);
+@@ -3593,7 +3593,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+ dev->dep = (struct net2280_dep_regs __iomem *) (base + 0x0200);
+ dev->epregs = (struct net2280_ep_regs __iomem *) (base + 0x0300);
+
+- if (dev->quirks & PLX_SUPERSPEED) {
++ if (dev->quirks & PLX_PCIE) {
+ u32 fsmvalue;
+ u32 usbstat;
+ dev->usb_ext = (struct usb338x_usb_ext_regs __iomem *)
+@@ -3637,7 +3637,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+ goto done;
+ }
+
+- if (dev->quirks & PLX_SUPERSPEED)
++ if (dev->quirks & PLX_PCIE)
+ if (pci_enable_msi(pdev))
+ ep_err(dev, "Failed to enable MSI mode\n");
+
+@@ -3755,10 +3755,19 @@ static const struct pci_device_id pci_ids[] = { {
+ .class = PCI_CLASS_SERIAL_USB_DEVICE,
+ .class_mask = ~0,
+ .vendor = PCI_VENDOR_ID_PLX,
++ .device = 0x2380,
++ .subvendor = PCI_ANY_ID,
++ .subdevice = PCI_ANY_ID,
++ .driver_data = PLX_PCIE,
++ },
++ {
++ .class = ((PCI_CLASS_SERIAL_USB << 8) | 0xfe),
++ .class_mask = ~0,
++ .vendor = PCI_VENDOR_ID_PLX,
+ .device = 0x3380,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+- .driver_data = PLX_SUPERSPEED,
++ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
+ },
+ {
+ .class = PCI_CLASS_SERIAL_USB_DEVICE,
+@@ -3767,7 +3776,7 @@ static const struct pci_device_id pci_ids[] = { {
+ .device = 0x3382,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+- .driver_data = PLX_SUPERSPEED,
++ .driver_data = PLX_PCIE | PLX_SUPERSPEED,
+ },
+ { /* end: all zeroes */ }
+ };
+diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h
+index 0d32052..2736a95 100644
+--- a/drivers/usb/gadget/udc/net2280.h
++++ b/drivers/usb/gadget/udc/net2280.h
+@@ -47,6 +47,7 @@ set_idx_reg(struct net2280_regs __iomem *regs, u32 index, u32 value)
+ #define PLX_LEGACY BIT(0)
+ #define PLX_2280 BIT(1)
+ #define PLX_SUPERSPEED BIT(2)
++#define PLX_PCIE BIT(3)
+
+ #define REG_DIAG 0x0
+ #define RETRY_COUNTER 16
+--
+1.9.1
+
projects / openwrt / staging / lynxis / omap.git / commitdiff