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Add STM32 OTG FS device endpoint stall logic

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4556 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-04-04 18:01:00 +00:00
parent 7f31ea84b7
commit 1f6d3d6c26
2 changed files with 159 additions and 25 deletions
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2
Documentation/NuttShell.html
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@ -511,7 +511,7 @@ fi
<table width ="100%">
<tr bgcolor="#e4e4e4">
<td>
<a name="startupscript"><h2>1.7 NSH Start-Up Scrip</h2></a>
<a name="startupscript"><h2>1.7 NSH Start-Up Script</h2></a>
</td>
</tr>
</table>

182
arch/arm/src/stm32/stm32_otgfsdev.c
View File

@ -508,7 +508,17 @@ static int stm32_epsubmit(FAR struct usbdev_ep_s *ep,
struct usbdev_req_s *req);
static int stm32_epcancel(FAR struct usbdev_ep_s *ep,
struct usbdev_req_s *req);
/* Stall handling */
static int stm32_epsetstall(FAR struct stm32_usbdev_s *priv,
FAR struct stm32_ep_s *privep);
static int stm32_epclrstall(FAR struct stm32_usbdev_s *priv,
FAR struct stm32_ep_s *privep)
static int stm32_epstall(FAR struct usbdev_ep_s *ep, bool resume);
static void stm32_ep0stall(FAR struct stm32_usbdev_s *priv);
/* Endpoint allocation */
static FAR struct usbdev_ep_s *stm32_allocep(FAR struct usbdev_s *dev,
uint8_t epno, bool in, uint8_t eptype);
@ -1415,7 +1425,7 @@ static inline void stm32_stdrequest(struct stm32_usbdev_s *priv,
else if (priv->paddrset != 0 && ctrlreq->value == USB_FEATURE_ENDPOINTHALT && ctrlreq->len == 0 &&
(privep = stm32_epfindbyaddr(priv, ctrlreq->index)) != NULL)
{
stm32_epstall(&privep->ep, true);
stm32_epclrstall(priv, &privep->ep);
stm32_ep0state(priv, EP0STATE_NAK_IN);
}
else
@ -1447,7 +1457,7 @@ static inline void stm32_stdrequest(struct stm32_usbdev_s *priv,
else if (priv->paddrset != 0 && ctrlreq->value == USB_FEATURE_ENDPOINTHALT && ctrlreq->len == 0 &&
(privep = stm32_epfindbyaddr(priv, ctrlreq->index)) != NULL)
{
stm32_epstall(&privep->ep, false);
stm32_epsetstall(priv, privep);
stm32_ep0state(priv, EP0STATE_NAK_IN);
}
else
@ -1663,8 +1673,7 @@ static inline void stm32_ep0setup(struct stm32_usbdev_s *priv)
if (priv->stalled)
{
usbtrace(TRACE_DEVERROR(STM32_TRACEERR_EP0SETUPSTALLED), priv->ep0state);
stm32_epstall(&priv->epin[STM32_EP0_IN].ep, false);
stm32_epstall(&priv->epin[STM32_EP0_OUT].ep, false);
stm32_ep0stall(priv);
}
}
@ -1745,8 +1754,7 @@ static void stm32_ep0complete(struct stm32_usbdev_s *priv, uint8_t epphy)
if (priv->stalled)
{
usbtrace(TRACE_DEVERROR(STM32_TRACEERR_EP0SETUPSTALLED), priv->ep0state);
stm32_epstall(&priv->epin[STM32_EP0_IN].ep, false);
stm32_epstall(&priv->epin[STM32_EP0_OUT].ep, false);
stm32_ep0stall(priv);
}
}
@ -2626,11 +2634,133 @@ static int stm32_epcancel(FAR struct usbdev_ep_s *ep, FAR struct usbdev_req_s *r
return OK;
}
/*******************************************************************************
* Name: stm32_epsetstall
*
* Description:
* Stall an endpoint
*
*******************************************************************************/
static int stm32_epsetstall(FAR struct stm32_usbdev_s *priv,
FAR struct stm32_ep_s *privep)
{
uint32_t regaddr;
uint32_t regval;
usbtrace(TRACE_EPSTALL, privep->epphy);
/* Is this an IN endpoint? */
if (privep->isin == 1)
{
/* Get the IN endpoint device control register */
regaddr = STM32_OTGFS_DIEPCTL(privep->epphy);
regval = stm32_getreg(regaddr);
/* Is the endpoint enabled? */
if ((regval & OTGFS_DIEPCTL_EPENA) != 0)
{
/* Yes.. the endpoint is enabled, disable it */
regval = OTGFS_DIEPCTL_EPDIS;
}
else
{
regval = 0;
}
/* Then stall the endpoint */
regval |= OTGFS_DIEPCTL_STALL;
stm32_putreg(regval, regaddr);
}
else
{
/* Get the OUT endpoint device control register */
regaddr = STM32_OTGFS_DOEPCTL(privep->epphy);
regval = stm32_getreg(regaddr);
/* Then stall the endpoint */
regval |= OTGFS_DOEPCTL_STALL;
stm32_putreg(regval, regaddr);
}
/* The endpoint is now stalled */
privep->stalled = true;
return OK;
}
/*******************************************************************************
* Name: stm32_epclrstall
*
* Description:
* Resume a stalled endpoint
*
*******************************************************************************/
static int stm32_epclrstall(FAR struct stm32_usbdev_s *priv,
FAR struct stm32_ep_s *privep)
{
uint32_t regaddr;
uint32_t regval;
uint32_t stallbit;
uint32_t data0bit;
usbtrace(TRACE_EPRESUME, privep->epphy);
/* Is this an IN endpoint? */
if (privep->isin == 1)
{
/* Clear the stall bit in the IN endpoint device control register */
regaddr = STM32_OTGFS_DIEPCTL(privep->epphy);
stallbit = OTGFS_DIEPCTL_STALL;
data0bit = OTGFS_DIEPCTL_SD0PID;
}
else
{
/* Clear the stall bit in the IN endpoint device control register */
regaddr = STM32_OTGFS_DOEPCTL(privep->epphy);
stallbit = OTGFS_DOEPCTL_STALL;
data0bit = OTGFS_DOEPCTL_SD0PID;
}
/* Clear the stall bit */
regval = stm32_getreg(regaddr);
regval &= ~stallbit;
/* Set the DATA0 pid for interrupt and bulk endpoints */
if (privep->eptype == USB_EP_ATTR_XFER_INT ||
privep->eptype == USB_EP_ATTR_XFER_BULK)
{
/* Writing this bit sets the DATA0 PID */
regval |= data0bit;
}
stm32_putreg(regval, regaddr);
/* The endpoint is no longer stalled */
privep->stalled = false;
return OK;
}
/*******************************************************************************
* Name: stm32_epstall
*
* Description:
* Stall or resume and endpoint
* Stall or resume an endpoint
*
*******************************************************************************/
@ -2638,33 +2768,37 @@ static int stm32_epstall(FAR struct usbdev_ep_s *ep, bool resume)
{
FAR struct stm32_ep_s *privep = (FAR struct stm32_ep_s *)ep;
irqstate_t flags;
int ret;
/* STALL or RESUME the endpoint */
/* Set or clear the stall condition as requested */
flags = irqsave();
usbtrace(resume ? TRACE_EPRESUME : TRACE_EPSTALL, privep->epphy);
uint32_t addr = STM32_USBDEV_ENDPTCTRL(privep->epphy);
uint32_t ctrl_xs = STM32_EPPHYIN(privep->epphy) ? USBDEV_ENDPTCTRL_TXS : USBDEV_ENDPTCTRL_RXS;
uint32_t ctrl_xr = STM32_EPPHYIN(privep->epphy) ? USBDEV_ENDPTCTRL_TXR : USBDEV_ENDPTCTRL_RXR;
if (resume)
{
privep->stalled = false;
/* Clear stall and reset the data toggle */
stm32_chgbits (ctrl_xs | ctrl_xr, ctrl_xr, addr);
ret = stm32_epclrstall(priv, privep);
}
else
{
privep->stalled = true;
stm32_setbits (ctrl_xs, addr);
ret = stm32_epsetstall(priv, privep);
}
irqrestore(flags);
return OK;
return ret;
}
/*******************************************************************************
* Name: stm32_ep0stall
*
* Description:
* Stall endpoint 0
*
*******************************************************************************/
static void stm32_ep0stall(FAR struct stm32_usbdev_s *priv)
{
stm32_epsetstall(priv, &priv->epin[EP0]);
stm32_epsetstall(priv, &priv->epout[EP0]);
stm32_ep0outstart(priv);
}
/*******************************************************************************