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First debug changes for USB host

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3215 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-12-22 02:02:14 +00:00
parent 5d831782b3
commit 993e2a1c96
1 changed files with 23 additions and 6 deletions
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29
arch/arm/src/lpc17xx/lpc17_usbhost.c
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@ -88,9 +88,7 @@
/* CLKCTRL enable bits */
#define LPC17_CLKCTRL_ENABLES (USBOTG_CLK_HOSTCLK|USBOTG_CLK_DEVCLK|\
USBOTG_CLK_I2CCLK|USBOTG_CLK_OTGCLK|\
USBOTG_CLK_AHBCLK)
#define LPC17_CLKCTRL_ENABLES (USBOTG_CLK_HOSTCLK|USBDEV_CLK_PORTSELCLK|USBOTG_CLK_AHBCLK)
/* Dump GPIO registers */
@ -881,8 +879,9 @@ static int lpc17_usbinterrupt(int irq, FAR void *context)
intstatus = lpc17_getreg(LPC17_USBHOST_INTST);
intenable = lpc17_getreg(LPC17_USBHOST_INTEN);
intstatus &= intenable;
ullvdbg("INST: %08x INTEN:\n", intstatus, intenable);
intstatus &= intenable;
if (intstatus != 0)
{
/* Root hub status change interrupt */
@ -914,6 +913,7 @@ static int lpc17_usbinterrupt(int irq, FAR void *context)
{
if (!priv->connected)
{
ullvdbg("Connected\n");
DEBUGASSERT(priv->rhssem.semcount <= 0);
priv->tdstatus = 0;
priv->connected = true;
@ -929,8 +929,9 @@ static int lpc17_usbinterrupt(int irq, FAR void *context)
else if (priv->connected)
{
/* Yes.. disable interrupts */
/* Yes.. disable interrupts and disconnect the device */
ullvdbg("Disconnected\n");
lpc17_putreg(0, LPC17_USBHOST_INTEN);
priv->connected = false;
@ -1713,6 +1714,8 @@ FAR struct usbhost_driver_s *usbhost_initialize(int controller)
/* Enable clocking on USB (USB PLL clocking was initialized in very low-
* evel clock setup logic (see lpc17_clockconfig.c)). We do still need
* to set up USBOTG CLKCTRL to enable clocking.
*
* NOTE: The PORTSEL clock needs to be enabled only when accessing OTGSTCTRL
*/
lpc17_putreg(LPC17_CLKCTRL_ENABLES, LPC17_USBOTG_CLKCTRL);
@ -1725,7 +1728,21 @@ FAR struct usbhost_driver_s *usbhost_initialize(int controller)
}
while ((regval & LPC17_CLKCTRL_ENABLES) != LPC17_CLKCTRL_ENABLES);
lpc17_putreg(3, LPC17_USBOTG_STCTRL);
/* Set the OTG status and control register. Bits 0:1 apparently mean:
*
* 10: U1=device, U2=host
* 11: U1=host, U2=host
* 10: reserved
* 11: U1=host, U2=device
*
* NOTE: The PORTSEL clock needs to be enabled only when accessing OTGSTCTRL
*/
lpc17_putreg(1, LPC17_USBOTG_STCTRL);
/* Now we can turn off the PORTSEL clock */
lpc17_putreg((LPC17_CLKCTRL_ENABLES & ~USBDEV_CLK_PORTSELCLK), LPC17_USBOTG_CLKCTRL);
/* Step 3: Configure I/O pins */