writel(readl(ptr) & ~val, ptr);
}
-/* forward decleration of functions */
+static inline struct s3c_hsotg_ep *index_to_ep(struct dwc2_hsotg *hsotg,
+ u32 ep_index, u32 dir_in)
+{
+ if (dir_in)
+ return hsotg->eps_in[ep_index];
+ else
+ return hsotg->eps_out[ep_index];
+}
+
+/* forward declaration of functions */
static void s3c_hsotg_dump(struct dwc2_hsotg *hsotg);
/**
* a core reset. This means we either need to fix the gadgets to take
* account of DMA alignment, or add bounce buffers (yuerk).
*
- * Until this issue is sorted out, we always return 'false'.
+ * g_using_dma is set depending on dts flag.
*/
static inline bool using_dma(struct dwc2_hsotg *hsotg)
{
- return false; /* support is not complete */
+ return hsotg->g_using_dma;
}
/**
{
unsigned int ep;
unsigned int addr;
- unsigned int size;
int timeout;
u32 val;
- /* set FIFO sizes to 2048/1024 */
+ /* Reset fifo map if not correctly cleared during previous session */
+ WARN_ON(hsotg->fifo_map);
+ hsotg->fifo_map = 0;
- writel(2048, hsotg->regs + GRXFSIZ);
- writel((2048 << FIFOSIZE_STARTADDR_SHIFT) |
- (1024 << FIFOSIZE_DEPTH_SHIFT), hsotg->regs + GNPTXFSIZ);
+ /* set RX/NPTX FIFO sizes */
+ writel(hsotg->g_rx_fifo_sz, hsotg->regs + GRXFSIZ);
+ writel((hsotg->g_rx_fifo_sz << FIFOSIZE_STARTADDR_SHIFT) |
+ (hsotg->g_np_g_tx_fifo_sz << FIFOSIZE_DEPTH_SHIFT),
+ hsotg->regs + GNPTXFSIZ);
/*
* arange all the rest of the TX FIFOs, as some versions of this
*/
/* start at the end of the GNPTXFSIZ, rounded up */
- addr = 2048 + 1024;
+ addr = hsotg->g_rx_fifo_sz + hsotg->g_np_g_tx_fifo_sz;
/*
- * Because we have not enough memory to have each TX FIFO of size at
- * least 3072 bytes (the maximum single packet size), we create four
- * FIFOs of lenght 1024, and four of length 3072 bytes, and assing
+ * Configure fifos sizes from provided configuration and assign
* them to endpoints dynamically according to maxpacket size value of
* given endpoint.
*/
-
- /* 256*4=1024 bytes FIFO length */
- size = 256;
- for (ep = 1; ep <= 4; ep++) {
- val = addr;
- val |= size << FIFOSIZE_DEPTH_SHIFT;
- WARN_ONCE(addr + size > hsotg->fifo_mem,
- "insufficient fifo memory");
- addr += size;
-
- writel(val, hsotg->regs + DPTXFSIZN(ep));
- }
- /* 768*4=3072 bytes FIFO length */
- size = 768;
- for (ep = 5; ep <= 8; ep++) {
+ for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) {
+ if (!hsotg->g_tx_fifo_sz[ep])
+ continue;
val = addr;
- val |= size << FIFOSIZE_DEPTH_SHIFT;
- WARN_ONCE(addr + size > hsotg->fifo_mem,
+ val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT;
+ WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem,
"insufficient fifo memory");
- addr += size;
+ addr += hsotg->g_tx_fifo_sz[ep];
writel(val, hsotg->regs + DPTXFSIZN(ep));
}
dev_err(hsotg->dev,
"%s: timeout flushing fifos (GRSTCTL=%08x)\n",
__func__, val);
+ break;
}
udelay(1);
else
epsize = 0;
- if (index != 0 && ureq->zero) {
- /*
- * test for the packets being exactly right for the
- * transfer
- */
-
- if (length == (packets * hs_ep->ep.maxpacket))
- packets++;
+ /*
+ * zero length packet should be programmed on its own and should not
+ * be counted in DIEPTSIZ.PktCnt with other packets.
+ */
+ if (dir_in && ureq->zero && !continuing) {
+ /* Test if zlp is actually required. */
+ if ((ureq->length >= hs_ep->ep.maxpacket) &&
+ !(ureq->length % hs_ep->ep.maxpacket))
+ hs_ep->send_zlp = 1;
}
epsize |= DXEPTSIZ_PKTCNT(packets);
ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */
ctrl |= DXEPCTL_USBACTEP;
- dev_dbg(hsotg->dev, "setup req:%d\n", hsotg->setup);
+ dev_dbg(hsotg->dev, "ep0 state:%d\n", hsotg->ep0_state);
/* For Setup request do not clear NAK */
- if (hsotg->setup && index == 0)
- hsotg->setup = 0;
- else
+ if (!(index == 0 && hsotg->ep0_state == DWC2_EP0_SETUP))
ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */
-
dev_dbg(hsotg->dev, "%s: DxEPCTL=0x%08x\n", __func__, ctrl);
writel(ctrl, hsotg->regs + epctrl_reg);
/* check ep is enabled */
if (!(readl(hsotg->regs + epctrl_reg) & DXEPCTL_EPENA))
- dev_warn(hsotg->dev,
+ dev_dbg(hsotg->dev,
"ep%d: failed to become enabled (DXEPCTL=0x%08x)?\n",
index, readl(hsotg->regs + epctrl_reg));
static struct s3c_hsotg_ep *ep_from_windex(struct dwc2_hsotg *hsotg,
u32 windex)
{
- struct s3c_hsotg_ep *ep = &hsotg->eps[windex & 0x7F];
+ struct s3c_hsotg_ep *ep;
int dir = (windex & USB_DIR_IN) ? 1 : 0;
int idx = windex & 0x7F;
if (idx > hsotg->num_of_eps)
return NULL;
+ ep = index_to_ep(hsotg, idx, dir);
+
if (idx && ep->dir_in != dir)
return NULL;
req->buf = hsotg->ep0_buff;
req->length = length;
- req->zero = 1; /* always do zero-length final transfer */
+ /*
+ * zero flag is for sending zlp in DATA IN stage. It has no impact on
+ * STATUS stage.
+ */
+ req->zero = 0;
req->complete = s3c_hsotg_complete_oursetup;
if (length)
memcpy(req->buf, buff, length);
- else
- ep->sent_zlp = 1;
ret = s3c_hsotg_ep_queue(&ep->ep, req, GFP_ATOMIC);
if (ret) {
static int s3c_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
- struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0];
struct s3c_hsotg_ep *ep;
__le16 reply;
int ret;
static int s3c_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
- struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0];
struct s3c_hsotg_req *hs_req;
bool restart;
bool set = (ctrl->bRequest == USB_REQ_SET_FEATURE);
*/
static void s3c_hsotg_stall_ep0(struct dwc2_hsotg *hsotg)
{
- struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0];
u32 reg;
u32 ctrl;
static void s3c_hsotg_process_control(struct dwc2_hsotg *hsotg,
struct usb_ctrlrequest *ctrl)
{
- struct s3c_hsotg_ep *ep0 = &hsotg->eps[0];
+ struct s3c_hsotg_ep *ep0 = hsotg->eps_out[0];
int ret = 0;
u32 dcfg;
- ep0->sent_zlp = 0;
-
dev_dbg(hsotg->dev, "ctrl Req=%02x, Type=%02x, V=%04x, L=%04x\n",
ctrl->bRequest, ctrl->bRequestType,
ctrl->wValue, ctrl->wLength);
- /*
- * record the direction of the request, for later use when enquing
- * packets onto EP0.
- */
-
- ep0->dir_in = (ctrl->bRequestType & USB_DIR_IN) ? 1 : 0;
- dev_dbg(hsotg->dev, "ctrl: dir_in=%d\n", ep0->dir_in);
-
- /*
- * if we've no data with this request, then the last part of the
- * transaction is going to implicitly be IN.
- */
- if (ctrl->wLength == 0)
+ if (ctrl->wLength == 0) {
+ ep0->dir_in = 1;
+ hsotg->ep0_state = DWC2_EP0_STATUS_IN;
+ } else if (ctrl->bRequestType & USB_DIR_IN) {
ep0->dir_in = 1;
+ hsotg->ep0_state = DWC2_EP0_DATA_IN;
+ } else {
+ ep0->dir_in = 0;
+ hsotg->ep0_state = DWC2_EP0_DATA_OUT;
+ }
if ((ctrl->bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD) {
switch (ctrl->bRequest) {
case USB_REQ_SET_ADDRESS:
+ hsotg->connected = 1;
dcfg = readl(hsotg->regs + DCFG);
dcfg &= ~DCFG_DEVADDR_MASK;
dcfg |= (le16_to_cpu(ctrl->wValue) <<
return;
}
- hsotg->eps[0].dir_in = 0;
+ hsotg->eps_out[0]->dir_in = 0;
+ hsotg->eps_out[0]->send_zlp = 0;
+ hsotg->ep0_state = DWC2_EP0_SETUP;
- ret = s3c_hsotg_ep_queue(&hsotg->eps[0].ep, req, GFP_ATOMIC);
+ ret = s3c_hsotg_ep_queue(&hsotg->eps_out[0]->ep, req, GFP_ATOMIC);
if (ret < 0) {
dev_err(hsotg->dev, "%s: failed queue (%d)\n", __func__, ret);
/*
}
}
+static void s3c_hsotg_program_zlp(struct dwc2_hsotg *hsotg,
+ struct s3c_hsotg_ep *hs_ep)
+{
+ u32 ctrl;
+ u8 index = hs_ep->index;
+ u32 epctl_reg = hs_ep->dir_in ? DIEPCTL(index) : DOEPCTL(index);
+ u32 epsiz_reg = hs_ep->dir_in ? DIEPTSIZ(index) : DOEPTSIZ(index);
+
+ dev_dbg(hsotg->dev, "Sending zero-length packet on ep%d\n", index);
+
+ writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) |
+ DXEPTSIZ_XFERSIZE(0), hsotg->regs +
+ epsiz_reg);
+
+ ctrl = readl(hsotg->regs + epctl_reg);
+ ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */
+ ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */
+ ctrl |= DXEPCTL_USBACTEP;
+ writel(ctrl, hsotg->regs + epctl_reg);
+}
+
/**
* s3c_hsotg_complete_request - complete a request given to us
* @hsotg: The device state.
*/
static void s3c_hsotg_rx_data(struct dwc2_hsotg *hsotg, int ep_idx, int size)
{
- struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep_idx];
+ struct s3c_hsotg_ep *hs_ep = hsotg->eps_out[ep_idx];
struct s3c_hsotg_req *hs_req = hs_ep->req;
void __iomem *fifo = hsotg->regs + EPFIFO(ep_idx);
int to_read;
u32 epctl = readl(hsotg->regs + DOEPCTL(ep_idx));
int ptr;
- dev_warn(hsotg->dev,
+ dev_dbg(hsotg->dev,
"%s: FIFO %d bytes on ep%d but no req (DXEPCTl=0x%08x)\n",
__func__, size, ep_idx, epctl);
}
/**
- * s3c_hsotg_send_zlp - send zero-length packet on control endpoint
+ * s3c_hsotg_ep0_zlp - send/receive zero-length packet on control endpoint
* @hsotg: The device instance
- * @req: The request currently on this endpoint
+ * @dir_in: If IN zlp
*
* Generate a zero-length IN packet request for terminating a SETUP
* transaction.
* currently believed that we do not need to wait for any space in
* the TxFIFO.
*/
-static void s3c_hsotg_send_zlp(struct dwc2_hsotg *hsotg,
- struct s3c_hsotg_req *req)
+static void s3c_hsotg_ep0_zlp(struct dwc2_hsotg *hsotg, bool dir_in)
{
- u32 ctrl;
-
- if (!req) {
- dev_warn(hsotg->dev, "%s: no request?\n", __func__);
- return;
- }
+ /* eps_out[0] is used in both directions */
+ hsotg->eps_out[0]->dir_in = dir_in;
+ hsotg->ep0_state = dir_in ? DWC2_EP0_STATUS_IN : DWC2_EP0_STATUS_OUT;
- if (req->req.length == 0) {
- hsotg->eps[0].sent_zlp = 1;
- s3c_hsotg_enqueue_setup(hsotg);
- return;
- }
-
- hsotg->eps[0].dir_in = 1;
- hsotg->eps[0].sent_zlp = 1;
-
- dev_dbg(hsotg->dev, "sending zero-length packet\n");
-
- /* issue a zero-sized packet to terminate this */
- writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) |
- DXEPTSIZ_XFERSIZE(0), hsotg->regs + DIEPTSIZ(0));
-
- ctrl = readl(hsotg->regs + DIEPCTL0);
- ctrl |= DXEPCTL_CNAK; /* clear NAK set by core */
- ctrl |= DXEPCTL_EPENA; /* ensure ep enabled */
- ctrl |= DXEPCTL_USBACTEP;
- writel(ctrl, hsotg->regs + DIEPCTL0);
+ s3c_hsotg_program_zlp(hsotg, hsotg->eps_out[0]);
}
/**
* s3c_hsotg_handle_outdone - handle receiving OutDone/SetupDone from RXFIFO
* @hsotg: The device instance
* @epnum: The endpoint received from
- * @was_setup: Set if processing a SetupDone event.
*
* The RXFIFO has delivered an OutDone event, which means that the data
* transfer for an OUT endpoint has been completed, either by a short
* packet or by the finish of a transfer.
*/
-static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg,
- int epnum, bool was_setup)
+static void s3c_hsotg_handle_outdone(struct dwc2_hsotg *hsotg, int epnum)
{
u32 epsize = readl(hsotg->regs + DOEPTSIZ(epnum));
- struct s3c_hsotg_ep *hs_ep = &hsotg->eps[epnum];
+ struct s3c_hsotg_ep *hs_ep = hsotg->eps_out[epnum];
struct s3c_hsotg_req *hs_req = hs_ep->req;
struct usb_request *req = &hs_req->req;
unsigned size_left = DXEPTSIZ_XFERSIZE_GET(epsize);
return;
}
+ if (epnum == 0 && hsotg->ep0_state == DWC2_EP0_STATUS_OUT) {
+ dev_dbg(hsotg->dev, "zlp packet received\n");
+ s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
+ s3c_hsotg_enqueue_setup(hsotg);
+ return;
+ }
+
if (using_dma(hsotg)) {
unsigned size_done;
if (req->actual < req->length && size_left == 0) {
s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true);
return;
- } else if (epnum == 0) {
- /*
- * After was_setup = 1 =>
- * set CNAK for non Setup requests
- */
- hsotg->setup = was_setup ? 0 : 1;
}
if (req->actual < req->length && req->short_not_ok) {
*/
}
- if (epnum == 0) {
- /*
- * Condition req->complete != s3c_hsotg_complete_setup says:
- * send ZLP when we have an asynchronous request from gadget
- */
- if (!was_setup && req->complete != s3c_hsotg_complete_setup)
- s3c_hsotg_send_zlp(hsotg, hs_req);
+ if (epnum == 0 && hsotg->ep0_state == DWC2_EP0_DATA_OUT) {
+ /* Move to STATUS IN */
+ s3c_hsotg_ep0_zlp(hsotg, true);
+ return;
}
s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, result);
s3c_hsotg_read_frameno(hsotg));
if (!using_dma(hsotg))
- s3c_hsotg_handle_outdone(hsotg, epnum, false);
+ s3c_hsotg_handle_outdone(hsotg, epnum);
break;
case GRXSTS_PKTSTS_SETUPDONE:
"SetupDone (Frame=0x%08x, DOPEPCTL=0x%08x)\n",
s3c_hsotg_read_frameno(hsotg),
readl(hsotg->regs + DOEPCTL(0)));
-
- s3c_hsotg_handle_outdone(hsotg, epnum, true);
+ /*
+ * Call s3c_hsotg_handle_outdone here if it was not called from
+ * GRXSTS_PKTSTS_OUTDONE. That is, if the core didn't
+ * generate GRXSTS_PKTSTS_OUTDONE for setup packet.
+ */
+ if (hsotg->ep0_state == DWC2_EP0_SETUP)
+ s3c_hsotg_handle_outdone(hsotg, epnum);
break;
case GRXSTS_PKTSTS_OUTRX:
s3c_hsotg_read_frameno(hsotg),
readl(hsotg->regs + DOEPCTL(0)));
+ WARN_ON(hsotg->ep0_state != DWC2_EP0_SETUP);
+
s3c_hsotg_rx_data(hsotg, epnum, size);
break;
* the hardware control registers to reflect this.
*/
static void s3c_hsotg_set_ep_maxpacket(struct dwc2_hsotg *hsotg,
- unsigned int ep, unsigned int mps)
+ unsigned int ep, unsigned int mps, unsigned int dir_in)
{
- struct s3c_hsotg_ep *hs_ep = &hsotg->eps[ep];
+ struct s3c_hsotg_ep *hs_ep;
void __iomem *regs = hsotg->regs;
u32 mpsval;
u32 mcval;
u32 reg;
+ hs_ep = index_to_ep(hsotg, ep, dir_in);
+ if (!hs_ep)
+ return;
+
if (ep == 0) {
/* EP0 is a special case */
mpsval = s3c_hsotg_ep0_mps(mps);
hs_ep->ep.maxpacket = mpsval;
}
- /*
- * update both the in and out endpoint controldir_ registers, even
- * if one of the directions may not be in use.
- */
-
- reg = readl(regs + DIEPCTL(ep));
- reg &= ~DXEPCTL_MPS_MASK;
- reg |= mpsval;
- writel(reg, regs + DIEPCTL(ep));
-
- if (ep) {
+ if (dir_in) {
+ reg = readl(regs + DIEPCTL(ep));
+ reg &= ~DXEPCTL_MPS_MASK;
+ reg |= mpsval;
+ writel(reg, regs + DIEPCTL(ep));
+ } else {
reg = readl(regs + DOEPCTL(ep));
reg &= ~DXEPCTL_MPS_MASK;
reg |= mpsval;
}
/* Finish ZLP handling for IN EP0 transactions */
- if (hsotg->eps[0].sent_zlp) {
- dev_dbg(hsotg->dev, "zlp packet received\n");
+ if (hs_ep->index == 0 && hsotg->ep0_state == DWC2_EP0_STATUS_IN) {
+ dev_dbg(hsotg->dev, "zlp packet sent\n");
s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
+ s3c_hsotg_enqueue_setup(hsotg);
return;
}
dev_dbg(hsotg->dev, "req->length:%d req->actual:%d req->zero:%d\n",
hs_req->req.length, hs_req->req.actual, hs_req->req.zero);
- /*
- * Check if dealing with Maximum Packet Size(MPS) IN transfer at EP0
- * When sent data is a multiple MPS size (e.g. 64B ,128B ,192B
- * ,256B ... ), after last MPS sized packet send IN ZLP packet to
- * inform the host that no more data is available.
- * The state of req.zero member is checked to be sure that the value to
- * send is smaller than wValue expected from host.
- * Check req.length to NOT send another ZLP when the current one is
- * under completion (the one for which this completion has been called).
- */
- if (hs_req->req.length && hs_ep->index == 0 && hs_req->req.zero &&
- hs_req->req.length == hs_req->req.actual &&
- !(hs_req->req.length % hs_ep->ep.maxpacket)) {
+ if (!size_left && hs_req->req.actual < hs_req->req.length) {
+ dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__);
+ s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true);
+ return;
+ }
- dev_dbg(hsotg->dev, "ep0 zlp IN packet sent\n");
- s3c_hsotg_send_zlp(hsotg, hs_req);
+ /* Zlp for all endpoints, for ep0 only in DATA IN stage */
+ if (hs_ep->send_zlp) {
+ s3c_hsotg_program_zlp(hsotg, hs_ep);
+ hs_ep->send_zlp = 0;
+ /* transfer will be completed on next complete interrupt */
+ return;
+ }
+ if (hs_ep->index == 0 && hsotg->ep0_state == DWC2_EP0_DATA_IN) {
+ /* Move to STATUS OUT */
+ s3c_hsotg_ep0_zlp(hsotg, false);
return;
}
- if (!size_left && hs_req->req.actual < hs_req->req.length) {
- dev_dbg(hsotg->dev, "%s trying more for req...\n", __func__);
- s3c_hsotg_start_req(hsotg, hs_ep, hs_req, true);
- } else
- s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
+ s3c_hsotg_complete_request(hsotg, hs_ep, hs_req, 0);
}
/**
static void s3c_hsotg_epint(struct dwc2_hsotg *hsotg, unsigned int idx,
int dir_in)
{
- struct s3c_hsotg_ep *hs_ep = &hsotg->eps[idx];
+ struct s3c_hsotg_ep *hs_ep = index_to_ep(hsotg, idx, dir_in);
u32 epint_reg = dir_in ? DIEPINT(idx) : DOEPINT(idx);
u32 epctl_reg = dir_in ? DIEPCTL(idx) : DOEPCTL(idx);
u32 epsiz_reg = dir_in ? DIEPTSIZ(idx) : DOEPTSIZ(idx);
/* Clear endpoint interrupts */
writel(ints, hsotg->regs + epint_reg);
+ if (!hs_ep) {
+ dev_err(hsotg->dev, "%s:Interrupt for unconfigured ep%d(%s)\n",
+ __func__, idx, dir_in ? "in" : "out");
+ return;
+ }
+
dev_dbg(hsotg->dev, "%s: ep%d(%s) DxEPINT=0x%08x\n",
__func__, idx, dir_in ? "in" : "out", ints);
+ /* Don't process XferCompl interrupt if it is a setup packet */
+ if (idx == 0 && (ints & (DXEPINT_SETUP | DXEPINT_SETUP_RCVD)))
+ ints &= ~DXEPINT_XFERCOMPL;
+
if (ints & DXEPINT_XFERCOMPL) {
if (hs_ep->isochronous && hs_ep->interval == 1) {
if (ctrl & DXEPCTL_EOFRNUM)
* as we ignore the RXFIFO.
*/
- s3c_hsotg_handle_outdone(hsotg, idx, false);
+ s3c_hsotg_handle_outdone(hsotg, idx);
}
}
if (dir_in)
WARN_ON_ONCE(1);
else
- s3c_hsotg_handle_outdone(hsotg, 0, true);
+ s3c_hsotg_handle_outdone(hsotg, 0);
}
}
if (ep0_mps) {
int i;
- s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps);
- for (i = 1; i < hsotg->num_of_eps; i++)
- s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps);
+ /* Initialize ep0 for both in and out directions */
+ s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps, 1);
+ s3c_hsotg_set_ep_maxpacket(hsotg, 0, ep0_mps, 0);
+ for (i = 1; i < hsotg->num_of_eps; i++) {
+ if (hsotg->eps_in[i])
+ s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps, 1);
+ if (hsotg->eps_out[i])
+ s3c_hsotg_set_ep_maxpacket(hsotg, i, ep_mps, 0);
+ }
}
/* ensure after enumeration our EP0 is active */
* @hsotg: The device state.
* @ep: The endpoint the requests may be on.
* @result: The result code to use.
- * @force: Force removal of any current requests
*
* Go through the requests on the given endpoint and mark them
* completed with the given result code.
*/
static void kill_all_requests(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *ep,
- int result, bool force)
+ int result)
{
struct s3c_hsotg_req *req, *treq;
unsigned size;
- list_for_each_entry_safe(req, treq, &ep->queue, queue) {
- /*
- * currently, we can't do much about an already
- * running request on an in endpoint
- */
-
- if (ep->req == req && ep->dir_in && !force)
- continue;
+ ep->req = NULL;
+ list_for_each_entry_safe(req, treq, &ep->queue, queue)
s3c_hsotg_complete_request(hsotg, ep, req,
result);
- }
+
if (!hsotg->dedicated_fifos)
return;
size = (readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4;
return;
hsotg->connected = 0;
- for (ep = 0; ep < hsotg->num_of_eps; ep++)
- kill_all_requests(hsotg, &hsotg->eps[ep], -ESHUTDOWN, true);
+
+ for (ep = 0; ep < hsotg->num_of_eps; ep++) {
+ if (hsotg->eps_in[ep])
+ kill_all_requests(hsotg, hsotg->eps_in[ep],
+ -ESHUTDOWN);
+ if (hsotg->eps_out[ep])
+ kill_all_requests(hsotg, hsotg->eps_out[ep],
+ -ESHUTDOWN);
+ }
call_gadget(hsotg, disconnect);
}
int epno, ret;
/* look through for any more data to transmit */
-
for (epno = 0; epno < hsotg->num_of_eps; epno++) {
- ep = &hsotg->eps[epno];
+ ep = index_to_ep(hsotg, epno, 1);
+
+ if (!ep)
+ continue;
if (!ep->dir_in)
continue;
if (using_dma(hsotg))
writel(GAHBCFG_GLBL_INTR_EN | GAHBCFG_DMA_EN |
- GAHBCFG_HBSTLEN_INCR4,
+ (GAHBCFG_HBSTLEN_INCR4 << GAHBCFG_HBSTLEN_SHIFT),
hsotg->regs + GAHBCFG);
else
writel(((hsotg->dedicated_fifos) ? (GAHBCFG_NP_TXF_EMP_LVL |
* interrupts.
*/
- writel(((hsotg->dedicated_fifos) ? DIEPMSK_TXFIFOEMPTY |
- DIEPMSK_INTKNTXFEMPMSK : 0) |
+ writel(((hsotg->dedicated_fifos && !using_dma(hsotg)) ?
+ DIEPMSK_TXFIFOEMPTY | DIEPMSK_INTKNTXFEMPMSK : 0) |
DIEPMSK_EPDISBLDMSK | DIEPMSK_XFERCOMPLMSK |
DIEPMSK_TIMEOUTMSK | DIEPMSK_AHBERRMSK |
DIEPMSK_INTKNEPMISMSK,
writel(DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) |
DXEPTSIZ_XFERSIZE(8), hsotg->regs + DOEPTSIZ0);
- writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) |
+ writel(s3c_hsotg_ep0_mps(hsotg->eps_out[0]->ep.maxpacket) |
DXEPCTL_CNAK | DXEPCTL_EPENA |
DXEPCTL_USBACTEP,
hsotg->regs + DOEPCTL0);
/* enable, but don't activate EP0in */
- writel(s3c_hsotg_ep0_mps(hsotg->eps[0].ep.maxpacket) |
+ writel(s3c_hsotg_ep0_mps(hsotg->eps_out[0]->ep.maxpacket) |
DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0);
s3c_hsotg_enqueue_setup(hsotg);
writel(GINTSTS_ENUMDONE, hsotg->regs + GINTSTS);
s3c_hsotg_irq_enumdone(hsotg);
- hsotg->connected = 1;
}
if (gintsts & (GINTSTS_OEPINT | GINTSTS_IEPINT)) {
dev_dbg(hsotg->dev, "%s: daint=%08x\n", __func__, daint);
- for (ep = 0; ep < 15 && daint_out; ep++, daint_out >>= 1) {
+ for (ep = 0; ep < hsotg->num_of_eps && daint_out;
+ ep++, daint_out >>= 1) {
if (daint_out & 1)
s3c_hsotg_epint(hsotg, ep, 0);
}
- for (ep = 0; ep < 15 && daint_in; ep++, daint_in >>= 1) {
+ for (ep = 0; ep < hsotg->num_of_eps && daint_in;
+ ep++, daint_in >>= 1) {
if (daint_in & 1)
s3c_hsotg_epint(hsotg, ep, 1);
}
writel(GINTSTS_USBRST, hsotg->regs + GINTSTS);
+ /* Report disconnection if it is not already done. */
+ s3c_hsotg_disconnect(hsotg);
+
if (usb_status & GOTGCTL_BSESVLD) {
if (time_after(jiffies, hsotg->last_rst +
msecs_to_jiffies(200))) {
- kill_all_requests(hsotg, &hsotg->eps[0],
- -ECONNRESET, true);
+ kill_all_requests(hsotg, hsotg->eps_out[0],
+ -ECONNRESET);
s3c_hsotg_core_init_disconnected(hsotg);
s3c_hsotg_core_connect(hsotg);
struct s3c_hsotg_ep *hs_ep = our_ep(ep);
struct dwc2_hsotg *hsotg = hs_ep->parent;
unsigned long flags;
- int index = hs_ep->index;
+ unsigned int index = hs_ep->index;
u32 epctrl_reg;
u32 epctrl;
u32 mps;
- int dir_in;
- int i, val, size;
+ unsigned int dir_in;
+ unsigned int i, val, size;
int ret = 0;
dev_dbg(hsotg->dev,
epctrl |= DXEPCTL_SNAK;
/* update the endpoint state */
- s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps);
+ s3c_hsotg_set_ep_maxpacket(hsotg, hs_ep->index, mps, dir_in);
/* default, set to non-periodic */
hs_ep->isochronous = 0;
break;
}
+ /* If fifo is already allocated for this ep */
+ if (hs_ep->fifo_index) {
+ size = hs_ep->ep.maxpacket * hs_ep->mc;
+ /* If bigger fifo is required deallocate current one */
+ if (size > hs_ep->fifo_size) {
+ hsotg->fifo_map &= ~(1 << hs_ep->fifo_index);
+ hs_ep->fifo_index = 0;
+ hs_ep->fifo_size = 0;
+ }
+ }
+
/*
* if the hardware has dedicated fifos, we must give each IN EP
* a unique tx-fifo even if it is non-periodic.
*/
- if (dir_in && hsotg->dedicated_fifos) {
+ if (dir_in && hsotg->dedicated_fifos && !hs_ep->fifo_index) {
+ u32 fifo_index = 0;
+ u32 fifo_size = UINT_MAX;
size = hs_ep->ep.maxpacket*hs_ep->mc;
- for (i = 1; i <= 8; ++i) {
+ for (i = 1; i < hsotg->num_of_eps; ++i) {
if (hsotg->fifo_map & (1<<i))
continue;
val = readl(hsotg->regs + DPTXFSIZN(i));
val = (val >> FIFOSIZE_DEPTH_SHIFT)*4;
if (val < size)
continue;
- hsotg->fifo_map |= 1<<i;
-
- epctrl |= DXEPCTL_TXFNUM(i);
- hs_ep->fifo_index = i;
- hs_ep->fifo_size = val;
- break;
+ /* Search for smallest acceptable fifo */
+ if (val < fifo_size) {
+ fifo_size = val;
+ fifo_index = i;
+ }
}
- if (i == 8) {
+ if (!fifo_index) {
+ dev_err(hsotg->dev,
+ "%s: No suitable fifo found\n", __func__);
ret = -ENOMEM;
goto error;
}
+ hsotg->fifo_map |= 1 << fifo_index;
+ epctrl |= DXEPCTL_TXFNUM(fifo_index);
+ hs_ep->fifo_index = fifo_index;
+ hs_ep->fifo_size = fifo_size;
}
/* for non control endpoints, set PID to D0 */
dev_dbg(hsotg->dev, "%s(ep %p)\n", __func__, ep);
- if (ep == &hsotg->eps[0].ep) {
+ if (ep == &hsotg->eps_out[0]->ep) {
dev_err(hsotg->dev, "%s: called for ep0\n", __func__);
return -EINVAL;
}
epctrl_reg = dir_in ? DIEPCTL(index) : DOEPCTL(index);
spin_lock_irqsave(&hsotg->lock, flags);
- /* terminate all requests with shutdown */
- kill_all_requests(hsotg, hs_ep, -ESHUTDOWN, force);
hsotg->fifo_map &= ~(1<<hs_ep->fifo_index);
hs_ep->fifo_index = 0;
/* disable endpoint interrupts */
s3c_hsotg_ctrl_epint(hsotg, hs_ep->index, hs_ep->dir_in, 0);
+ /* terminate all requests with shutdown */
+ kill_all_requests(hsotg, hs_ep, -ESHUTDOWN);
+
spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
return 0;
}
- /* write both IN and OUT control registers */
-
- epreg = DIEPCTL(index);
- epctl = readl(hs->regs + epreg);
-
- if (value) {
- epctl |= DXEPCTL_STALL + DXEPCTL_SNAK;
- if (epctl & DXEPCTL_EPENA)
- epctl |= DXEPCTL_EPDIS;
+ if (hs_ep->dir_in) {
+ epreg = DIEPCTL(index);
+ epctl = readl(hs->regs + epreg);
+
+ if (value) {
+ epctl |= DXEPCTL_STALL + DXEPCTL_SNAK;
+ if (epctl & DXEPCTL_EPENA)
+ epctl |= DXEPCTL_EPDIS;
+ } else {
+ epctl &= ~DXEPCTL_STALL;
+ xfertype = epctl & DXEPCTL_EPTYPE_MASK;
+ if (xfertype == DXEPCTL_EPTYPE_BULK ||
+ xfertype == DXEPCTL_EPTYPE_INTERRUPT)
+ epctl |= DXEPCTL_SETD0PID;
+ }
+ writel(epctl, hs->regs + epreg);
} else {
- epctl &= ~DXEPCTL_STALL;
- xfertype = epctl & DXEPCTL_EPTYPE_MASK;
- if (xfertype == DXEPCTL_EPTYPE_BULK ||
- xfertype == DXEPCTL_EPTYPE_INTERRUPT)
- epctl |= DXEPCTL_SETD0PID;
- }
- writel(epctl, hs->regs + epreg);
+ epreg = DOEPCTL(index);
+ epctl = readl(hs->regs + epreg);
- epreg = DOEPCTL(index);
- epctl = readl(hs->regs + epreg);
-
- if (value)
- epctl |= DXEPCTL_STALL;
- else {
- epctl &= ~DXEPCTL_STALL;
- xfertype = epctl & DXEPCTL_EPTYPE_MASK;
- if (xfertype == DXEPCTL_EPTYPE_BULK ||
- xfertype == DXEPCTL_EPTYPE_INTERRUPT)
- epctl |= DXEPCTL_SETD0PID;
+ if (value)
+ epctl |= DXEPCTL_STALL;
+ else {
+ epctl &= ~DXEPCTL_STALL;
+ xfertype = epctl & DXEPCTL_EPTYPE_MASK;
+ if (xfertype == DXEPCTL_EPTYPE_BULK ||
+ xfertype == DXEPCTL_EPTYPE_INTERRUPT)
+ epctl |= DXEPCTL_SETD0PID;
+ }
+ writel(epctl, hs->regs + epreg);
}
- writel(epctl, hs->regs + epreg);
-
hs_ep->halted = value;
return 0;
writel(GUSBCFG_PHYIF16 | GUSBCFG_TOUTCAL(7) | (0x5 << 10),
hsotg->regs + GUSBCFG);
- writel(using_dma(hsotg) ? GAHBCFG_DMA_EN : 0x0,
- hsotg->regs + GAHBCFG);
+ if (using_dma(hsotg))
+ __orr32(hsotg->regs + GAHBCFG, GAHBCFG_DMA_EN);
}
/**
}
s3c_hsotg_phy_enable(hsotg);
+ if (!IS_ERR_OR_NULL(hsotg->uphy))
+ otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget);
spin_lock_irqsave(&hsotg->lock, flags);
s3c_hsotg_init(hsotg);
mutex_lock(&hsotg->init_mutex);
/* all endpoints should be shutdown */
- for (ep = 1; ep < hsotg->num_of_eps; ep++)
- s3c_hsotg_ep_disable_force(&hsotg->eps[ep].ep, true);
+ for (ep = 1; ep < hsotg->num_of_eps; ep++) {
+ if (hsotg->eps_in[ep])
+ s3c_hsotg_ep_disable(&hsotg->eps_in[ep]->ep);
+ if (hsotg->eps_out[ep])
+ s3c_hsotg_ep_disable(&hsotg->eps_out[ep]->ep);
+ }
spin_lock_irqsave(&hsotg->lock, flags);
spin_unlock_irqrestore(&hsotg->lock, flags);
+ if (!IS_ERR_OR_NULL(hsotg->uphy))
+ otg_set_peripheral(hsotg->uphy->otg, NULL);
s3c_hsotg_phy_disable(hsotg);
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies);
s3c_hsotg_core_connect(hsotg);
} else {
s3c_hsotg_core_disconnect(hsotg);
+ s3c_hsotg_disconnect(hsotg);
hsotg->enabled = 0;
clk_disable(hsotg->clk);
}
return 0;
}
+static int s3c_hsotg_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
+ unsigned long flags;
+
+ dev_dbg(hsotg->dev, "%s: is_active: %d\n", __func__, is_active);
+ spin_lock_irqsave(&hsotg->lock, flags);
+
+ if (is_active) {
+ /* Kill any ep0 requests as controller will be reinitialized */
+ kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET);
+ s3c_hsotg_core_init_disconnected(hsotg);
+ if (hsotg->enabled)
+ s3c_hsotg_core_connect(hsotg);
+ } else {
+ s3c_hsotg_core_disconnect(hsotg);
+ s3c_hsotg_disconnect(hsotg);
+ }
+
+ spin_unlock_irqrestore(&hsotg->lock, flags);
+ return 0;
+}
+
+/**
+ * s3c_hsotg_vbus_draw - report bMaxPower field
+ * @gadget: The usb gadget state
+ * @mA: Amount of current
+ *
+ * Report how much power the device may consume to the phy.
+ */
+static int s3c_hsotg_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ struct dwc2_hsotg *hsotg = to_hsotg(gadget);
+
+ if (IS_ERR_OR_NULL(hsotg->uphy))
+ return -ENOTSUPP;
+ return usb_phy_set_power(hsotg->uphy, mA);
+}
+
static const struct usb_gadget_ops s3c_hsotg_gadget_ops = {
.get_frame = s3c_hsotg_gadget_getframe,
.udc_start = s3c_hsotg_udc_start,
.udc_stop = s3c_hsotg_udc_stop,
.pullup = s3c_hsotg_pullup,
+ .vbus_session = s3c_hsotg_vbus_session,
+ .vbus_draw = s3c_hsotg_vbus_draw,
};
/**
*/
static void s3c_hsotg_initep(struct dwc2_hsotg *hsotg,
struct s3c_hsotg_ep *hs_ep,
- int epnum)
+ int epnum,
+ bool dir_in)
{
char *dir;
if (epnum == 0)
dir = "";
- else if ((epnum % 2) == 0) {
- dir = "out";
- } else {
+ else if (dir_in)
dir = "in";
- hs_ep->dir_in = 1;
- }
+ else
+ dir = "out";
+ hs_ep->dir_in = dir_in;
hs_ep->index = epnum;
snprintf(hs_ep->name, sizeof(hs_ep->name), "ep%d%s", epnum, dir);
if (using_dma(hsotg)) {
u32 next = DXEPCTL_NEXTEP((epnum + 1) % 15);
- writel(next, hsotg->regs + DIEPCTL(epnum));
- writel(next, hsotg->regs + DOEPCTL(epnum));
+ if (dir_in)
+ writel(next, hsotg->regs + DIEPCTL(epnum));
+ else
+ writel(next, hsotg->regs + DOEPCTL(epnum));
}
}
*
* Read the USB core HW configuration registers
*/
-static void s3c_hsotg_hw_cfg(struct dwc2_hsotg *hsotg)
+static int s3c_hsotg_hw_cfg(struct dwc2_hsotg *hsotg)
{
- u32 cfg2, cfg3, cfg4;
+ u32 cfg;
+ u32 ep_type;
+ u32 i;
+
/* check hardware configuration */
- cfg2 = readl(hsotg->regs + 0x48);
- hsotg->num_of_eps = (cfg2 >> 10) & 0xF;
+ cfg = readl(hsotg->regs + GHWCFG2);
+ hsotg->num_of_eps = (cfg >> 10) & 0xF;
+ /* Add ep0 */
+ hsotg->num_of_eps++;
- cfg3 = readl(hsotg->regs + 0x4C);
- hsotg->fifo_mem = (cfg3 >> 16);
+ hsotg->eps_in[0] = devm_kzalloc(hsotg->dev, sizeof(struct s3c_hsotg_ep),
+ GFP_KERNEL);
+ if (!hsotg->eps_in[0])
+ return -ENOMEM;
+ /* Same s3c_hsotg_ep is used in both directions for ep0 */
+ hsotg->eps_out[0] = hsotg->eps_in[0];
+
+ cfg = readl(hsotg->regs + GHWCFG1);
+ for (i = 1; i < hsotg->num_of_eps; i++, cfg >>= 2) {
+ ep_type = cfg & 3;
+ /* Direction in or both */
+ if (!(ep_type & 2)) {
+ hsotg->eps_in[i] = devm_kzalloc(hsotg->dev,
+ sizeof(struct s3c_hsotg_ep), GFP_KERNEL);
+ if (!hsotg->eps_in[i])
+ return -ENOMEM;
+ }
+ /* Direction out or both */
+ if (!(ep_type & 1)) {
+ hsotg->eps_out[i] = devm_kzalloc(hsotg->dev,
+ sizeof(struct s3c_hsotg_ep), GFP_KERNEL);
+ if (!hsotg->eps_out[i])
+ return -ENOMEM;
+ }
+ }
+
+ cfg = readl(hsotg->regs + GHWCFG3);
+ hsotg->fifo_mem = (cfg >> 16);
- cfg4 = readl(hsotg->regs + 0x50);
- hsotg->dedicated_fifos = (cfg4 >> 25) & 1;
+ cfg = readl(hsotg->regs + GHWCFG4);
+ hsotg->dedicated_fifos = (cfg >> 25) & 1;
dev_info(hsotg->dev, "EPs: %d, %s fifos, %d entries in SPRAM\n",
hsotg->num_of_eps,
hsotg->dedicated_fifos ? "dedicated" : "shared",
hsotg->fifo_mem);
+ return 0;
}
/**
/* show periodic fifo settings */
- for (idx = 1; idx <= 15; idx++) {
+ for (idx = 1; idx < hsotg->num_of_eps; idx++) {
val = readl(regs + DPTXFSIZN(idx));
dev_info(dev, "DPTx[%d] FSize=%d, StAddr=0x%08x\n", idx,
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
}
- for (idx = 0; idx < 15; idx++) {
+ for (idx = 0; idx < hsotg->num_of_eps; idx++) {
dev_info(dev,
"ep%d-in: EPCTL=0x%08x, SIZ=0x%08x, DMA=0x%08x\n", idx,
readl(regs + DIEPCTL(idx)),
seq_puts(seq, "\nEndpoint status:\n");
- for (idx = 0; idx < 15; idx++) {
+ for (idx = 0; idx < hsotg->num_of_eps; idx++) {
u32 in, out;
in = readl(regs + DIEPCTL(idx));
seq_puts(seq, "\nPeriodic TXFIFOs:\n");
- for (idx = 1; idx <= 15; idx++) {
+ for (idx = 1; idx < hsotg->num_of_eps; idx++) {
val = readl(regs + DPTXFSIZN(idx));
seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
if (IS_ERR(hsotg->debug_fifo))
dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__);
- /* create one file for each endpoint */
-
+ /* Create one file for each out endpoint */
for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
- struct s3c_hsotg_ep *ep = &hsotg->eps[epidx];
+ struct s3c_hsotg_ep *ep;
+
+ ep = hsotg->eps_out[epidx];
+ if (ep) {
+ ep->debugfs = debugfs_create_file(ep->name, 0444,
+ root, ep, &ep_fops);
+
+ if (IS_ERR(ep->debugfs))
+ dev_err(hsotg->dev, "failed to create %s debug file\n",
+ ep->name);
+ }
+ }
+ /* Create one file for each in endpoint. EP0 is handled with out eps */
+ for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
+ struct s3c_hsotg_ep *ep;
- ep->debugfs = debugfs_create_file(ep->name, 0444,
- root, ep, &ep_fops);
+ ep = hsotg->eps_in[epidx];
+ if (ep) {
+ ep->debugfs = debugfs_create_file(ep->name, 0444,
+ root, ep, &ep_fops);
- if (IS_ERR(ep->debugfs))
- dev_err(hsotg->dev, "failed to create %s debug file\n",
- ep->name);
+ if (IS_ERR(ep->debugfs))
+ dev_err(hsotg->dev, "failed to create %s debug file\n",
+ ep->name);
+ }
}
}
unsigned epidx;
for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
- struct s3c_hsotg_ep *ep = &hsotg->eps[epidx];
- debugfs_remove(ep->debugfs);
+ if (hsotg->eps_in[epidx])
+ debugfs_remove(hsotg->eps_in[epidx]->debugfs);
+ if (hsotg->eps_out[epidx])
+ debugfs_remove(hsotg->eps_out[epidx]->debugfs);
}
debugfs_remove(hsotg->debug_file);
debugfs_remove(hsotg->debug_root);
}
+#ifdef CONFIG_OF
+static void s3c_hsotg_of_probe(struct dwc2_hsotg *hsotg)
+{
+ struct device_node *np = hsotg->dev->of_node;
+ u32 len = 0;
+ u32 i = 0;
+
+ /* Enable dma if requested in device tree */
+ hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma");
+
+ /*
+ * Register TX periodic fifo size per endpoint.
+ * EP0 is excluded since it has no fifo configuration.
+ */
+ if (!of_find_property(np, "g-tx-fifo-size", &len))
+ goto rx_fifo;
+
+ len /= sizeof(u32);
+
+ /* Read tx fifo sizes other than ep0 */
+ if (of_property_read_u32_array(np, "g-tx-fifo-size",
+ &hsotg->g_tx_fifo_sz[1], len))
+ goto rx_fifo;
+
+ /* Add ep0 */
+ len++;
+
+ /* Make remaining TX fifos unavailable */
+ if (len < MAX_EPS_CHANNELS) {
+ for (i = len; i < MAX_EPS_CHANNELS; i++)
+ hsotg->g_tx_fifo_sz[i] = 0;
+ }
+
+rx_fifo:
+ /* Register RX fifo size */
+ of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz);
+
+ /* Register NPTX fifo size */
+ of_property_read_u32(np, "g-np-tx-fifo-size",
+ &hsotg->g_np_g_tx_fifo_sz);
+}
+#else
+static inline void s3c_hsotg_of_probe(struct dwc2_hsotg *hsotg) { }
+#endif
+
/**
* dwc2_gadget_init - init function for gadget
* @dwc2: The data structure for the DWC2 driver.
{
struct device *dev = hsotg->dev;
struct s3c_hsotg_plat *plat = dev->platform_data;
- struct phy *phy;
- struct usb_phy *uphy;
- struct s3c_hsotg_ep *eps;
int epnum;
int ret;
int i;
+ u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
/* Set default UTMI width */
hsotg->phyif = GUSBCFG_PHYIF16;
+ s3c_hsotg_of_probe(hsotg);
+
+ /* Initialize to legacy fifo configuration values */
+ hsotg->g_rx_fifo_sz = 2048;
+ hsotg->g_np_g_tx_fifo_sz = 1024;
+ memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo));
+ /* Device tree specific probe */
+ s3c_hsotg_of_probe(hsotg);
+ /* Dump fifo information */
+ dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n",
+ hsotg->g_np_g_tx_fifo_sz);
+ dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz);
+ for (i = 0; i < MAX_EPS_CHANNELS; i++)
+ dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i,
+ hsotg->g_tx_fifo_sz[i]);
/*
- * Attempt to find a generic PHY, then look for an old style
- * USB PHY, finally fall back to pdata
+ * If platform probe couldn't find a generic PHY or an old style
+ * USB PHY, fall back to pdata
*/
- phy = devm_phy_get(dev, "usb2-phy");
- if (IS_ERR(phy)) {
- uphy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
- if (IS_ERR(uphy)) {
- /* Fallback for pdata */
- plat = dev_get_platdata(dev);
- if (!plat) {
- dev_err(dev,
- "no platform data or transceiver defined\n");
- return -EPROBE_DEFER;
- }
- hsotg->plat = plat;
- } else
- hsotg->uphy = uphy;
- } else {
- hsotg->phy = phy;
+ if (IS_ERR_OR_NULL(hsotg->phy) && IS_ERR_OR_NULL(hsotg->uphy)) {
+ plat = dev_get_platdata(dev);
+ if (!plat) {
+ dev_err(dev,
+ "no platform data or transceiver defined\n");
+ return -EPROBE_DEFER;
+ }
+ hsotg->plat = plat;
+ } else if (hsotg->phy) {
/*
* If using the generic PHY framework, check if the PHY bus
* width is 8-bit and set the phyif appropriately.
*/
- if (phy_get_bus_width(phy) == 8)
+ if (phy_get_bus_width(hsotg->phy) == 8)
hsotg->phyif = GUSBCFG_PHYIF8;
}
if (ret) {
dev_err(dev, "failed to enable supplies: %d\n", ret);
- goto err_supplies;
+ goto err_clk;
}
/* usb phy enable */
s3c_hsotg_phy_enable(hsotg);
+ /*
+ * Force Device mode before initialization.
+ * This allows correctly configuring fifo for device mode.
+ */
+ __bic32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEHOSTMODE);
+ __orr32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEDEVMODE);
+
+ /*
+ * According to Synopsys databook, this sleep is needed for the force
+ * device mode to take effect.
+ */
+ msleep(25);
+
s3c_hsotg_corereset(hsotg);
- s3c_hsotg_hw_cfg(hsotg);
+ ret = s3c_hsotg_hw_cfg(hsotg);
+ if (ret) {
+ dev_err(hsotg->dev, "Hardware configuration failed: %d\n", ret);
+ goto err_clk;
+ }
+
s3c_hsotg_init(hsotg);
+ /* Switch back to default configuration */
+ __bic32(hsotg->regs + GUSBCFG, GUSBCFG_FORCEDEVMODE);
+
+ hsotg->ctrl_buff = devm_kzalloc(hsotg->dev,
+ DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
+ if (!hsotg->ctrl_buff) {
+ dev_err(dev, "failed to allocate ctrl request buff\n");
+ ret = -ENOMEM;
+ goto err_supplies;
+ }
+
+ hsotg->ep0_buff = devm_kzalloc(hsotg->dev,
+ DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
+ if (!hsotg->ep0_buff) {
+ dev_err(dev, "failed to allocate ctrl reply buff\n");
+ ret = -ENOMEM;
+ goto err_supplies;
+ }
+
ret = devm_request_irq(hsotg->dev, irq, s3c_hsotg_irq, IRQF_SHARED,
dev_name(hsotg->dev), hsotg);
if (ret < 0) {
regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
dev_err(dev, "cannot claim IRQ for gadget\n");
- goto err_clk;
+ goto err_supplies;
}
/* hsotg->num_of_eps holds number of EPs other than ep0 */
goto err_supplies;
}
- eps = kcalloc(hsotg->num_of_eps + 1, sizeof(struct s3c_hsotg_ep),
- GFP_KERNEL);
- if (!eps) {
- ret = -ENOMEM;
- goto err_supplies;
- }
-
- hsotg->eps = eps;
-
/* setup endpoint information */
INIT_LIST_HEAD(&hsotg->gadget.ep_list);
- hsotg->gadget.ep0 = &hsotg->eps[0].ep;
+ hsotg->gadget.ep0 = &hsotg->eps_out[0]->ep;
/* allocate EP0 request */
- hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps[0].ep,
+ hsotg->ctrl_req = s3c_hsotg_ep_alloc_request(&hsotg->eps_out[0]->ep,
GFP_KERNEL);
if (!hsotg->ctrl_req) {
dev_err(dev, "failed to allocate ctrl req\n");
ret = -ENOMEM;
- goto err_ep_mem;
+ goto err_supplies;
}
/* initialise the endpoints now the core has been initialised */
- for (epnum = 0; epnum < hsotg->num_of_eps; epnum++)
- s3c_hsotg_initep(hsotg, &hsotg->eps[epnum], epnum);
+ for (epnum = 0; epnum < hsotg->num_of_eps; epnum++) {
+ if (hsotg->eps_in[epnum])
+ s3c_hsotg_initep(hsotg, hsotg->eps_in[epnum],
+ epnum, 1);
+ if (hsotg->eps_out[epnum])
+ s3c_hsotg_initep(hsotg, hsotg->eps_out[epnum],
+ epnum, 0);
+ }
/* disable power and clock */
s3c_hsotg_phy_disable(hsotg);
hsotg->supplies);
if (ret) {
dev_err(dev, "failed to disable supplies: %d\n", ret);
- goto err_ep_mem;
+ goto err_supplies;
}
ret = usb_add_gadget_udc(dev, &hsotg->gadget);
if (ret)
- goto err_ep_mem;
+ goto err_supplies;
s3c_hsotg_create_debug(hsotg);
return 0;
-err_ep_mem:
- kfree(eps);
err_supplies:
s3c_hsotg_phy_disable(hsotg);
err_clk:
s3c_hsotg_phy_disable(hsotg);
- for (ep = 0; ep < hsotg->num_of_eps; ep++)
- s3c_hsotg_ep_disable(&hsotg->eps[ep].ep);
+ for (ep = 0; ep < hsotg->num_of_eps; ep++) {
+ if (hsotg->eps_in[ep])
+ s3c_hsotg_ep_disable(&hsotg->eps_in[ep]->ep);
+ if (hsotg->eps_out[ep])
+ s3c_hsotg_ep_disable(&hsotg->eps_out[ep]->ep);
+ }
ret = regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies),
hsotg->supplies);
projects / deliverable / linux.git / blobdiff