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path: root/drivers/usb/gadget/fsl_udc_core.c
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Diffstat (limited to 'drivers/usb/gadget/fsl_udc_core.c')
-rw-r--r--drivers/usb/gadget/fsl_udc_core.c80
1 files changed, 53 insertions, 27 deletions
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 5f94e79cd6b9..28316858208b 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2004-2007,2011 Freescale Semiconductor, Inc.
+ * Copyright (C) 2004-2007,2011-2012 Freescale Semiconductor, Inc.
* All rights reserved.
*
* Author: Li Yang <leoli@freescale.com>
@@ -58,9 +58,8 @@ 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;
@@ -244,10 +243,9 @@ static int dr_controller_setup(struct fsl_udc *udc)
{
unsigned int tmp, portctrl, ep_num;
unsigned int max_no_of_ep;
-#ifndef CONFIG_ARCH_MXC
unsigned int ctrl;
-#endif
unsigned long timeout;
+
#define FSL_UDC_RESET_TIMEOUT 1000
/* Config PHY interface */
@@ -255,12 +253,32 @@ 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:
@@ -549,7 +567,7 @@ 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 || ep->ep.desc
|| (desc->bDescriptorType != USB_DT_ENDPOINT))
return -EINVAL;
@@ -590,7 +608,7 @@ 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 */
@@ -614,7 +632,7 @@ 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:
@@ -634,7 +652,7 @@ 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;
}
@@ -657,7 +675,6 @@ 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);
@@ -730,12 +747,14 @@ 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_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)
return;
@@ -874,11 +893,11 @@ 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 (usb_endpoint_xfer_isoc(ep->desc)) {
+ if (usb_endpoint_xfer_isoc(ep->ep.desc)) {
if (req->req.length > ep->ep.maxpacket)
return -EMSGSIZE;
}
@@ -918,10 +937,6 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_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);
@@ -1021,12 +1036,12 @@ 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 (usb_endpoint_xfer_isoc(ep->desc)) {
+ if (usb_endpoint_xfer_isoc(ep->ep.desc)) {
status = -EOPNOTSUPP;
goto out;
}
@@ -1065,7 +1080,7 @@ static int fsl_ep_fifo_status(struct usb_ep *_ep)
struct ep_queue_head *qh;
ep = container_of(_ep, struct fsl_ep, ep);
- if (!_ep || (!ep->desc && ep_index(ep) != 0))
+ if (!_ep || (!ep->ep.desc && ep_index(ep) != 0))
return -ENODEV;
udc = (struct fsl_udc *)ep->udc;
@@ -1098,7 +1113,7 @@ 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);
@@ -1279,7 +1294,8 @@ 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;
@@ -1352,7 +1368,7 @@ 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;
@@ -1384,6 +1400,9 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
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);
@@ -1492,6 +1511,14 @@ 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;
@@ -1520,9 +1547,8 @@ 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 */
@@ -2252,7 +2278,7 @@ static int fsl_proc_read(char *page, char **start, off_t off, int count,
}
/* other gadget->eplist ep */
list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
- if (ep->desc) {
+ if (ep->ep.desc) {
t = scnprintf(next, size,
"\nFor %s Maxpkt is 0x%x "
"index is 0x%x\n",
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.