static void otg_set_session(struct musb *musb, u8 bSession, u8 bADevice)
{
/* REVISIT unclear what this should do, but this looks
* like the wrong thing ... the OTG machine should never
* shut down so long as both host and peripheral drivers
* are active.
*/
if (bSession && bADevice) {
davinci_vbus_power(musb, 1, 1);
} else if (bSession) {
davinci_vbus_power(musb, 0, 1);
} else {
davinci_vbus_power(musb, 0, 0);
}
}
int musb_platform_exit(struct musb *musb)
{
phy_off();
#ifdef CONFIG_MACH_DAVINCI_EVM
davinci_vbus_power(musb, 0 /*off */ , 1);
#ifdef CONFIG_USB_MUSB_OTG
/* Set EMACEN to enable OTG GPIO 16 for Emac control */
/* Set GPIO Direction */
DAVINCI_PINMUX0 |= (0x80000000);
#endif
#endif
#if defined (CONFIG_MACH_DAVINCI_HD_EVM) && defined(CONFIG_USB_MUSB_HDRC_HCD)
davinci_vbus_power(musb, 0 /*off */ , 1);
//DAVINCI_PINMUX0 |= 0x10000000;
//VDD3P3V_PWDN |= 0x10000000;
#endif
clk_disable (musb->clock);
clk_unuse (musb->clock);
return 0;
}
int musb_platform_exit(struct musb *musb)
{
phy_off();
#ifdef CONFIG_MACH_DAVINCI_EVM
#ifdef CONFIG_USB_MUSB_OTG
/* Set EMACEN to enable OTG GPIO 16 for Emac control */
/* Set GPIO Direction */
davinci_cfg_reg(DM644X_EMACEN);
#endif
#endif
#if defined(CONFIG_MACH_DAVINCI_HD_EVM) && defined(CONFIG_USB_MUSB_HDRC_HCD)
davinci_vbus_power(musb, 0);
#endif
if (musb->clock) {
clk_disable (musb->clock);
clk_unuse (musb->clock);
}
return 0;
}
static irqreturn_t davinci_interrupt(int irq, void *__hci, struct pt_regs *r)
{
unsigned long flags;
irqreturn_t retval = IRQ_NONE;
struct musb *musb = __hci;
void *__iomem tibase = musb->ctrl_base;
u32 tmp;
spin_lock_irqsave(&musb->Lock, flags);
#ifdef CONFIG_USB_TI_CPPI_DMA
/* CPPI interrupts share the same IRQ line, but have their own
* mask, state, and EIO registers.
*/
{
u32 cppi_tx = musb_readl(tibase, DAVINCI_TXCPPI_MASKED_REG);
u32 cppi_rx = musb_readl(tibase, DAVINCI_RXCPPI_MASKED_REG);
if (cppi_tx || cppi_rx) {
DBG(4, "<== CPPI IRQ t%x r%x\n", cppi_tx, cppi_rx);
cppi_completion(musb, cppi_rx, cppi_tx);
retval = IRQ_HANDLED;
}
}
#endif
/* NOTE: DaVinci shadows the Mentor IRQs; don't manage them through
* the mentor registers (except for setup), use the TI ones and EOI.
*/
/* ack and handle non-CPPI interrupts */
tmp = musb_readl(tibase, DAVINCI_USB_INT_SRC_MASKED_REG);
musb_writel(tibase, DAVINCI_USB_INT_SRC_CLR_REG, tmp);
musb->int_rx = (tmp & DAVINCI_USB_RXINT_MASK)
>> DAVINCI_USB_RXINT_SHIFT;
musb->int_tx = (tmp & DAVINCI_USB_TXINT_MASK)
>> DAVINCI_USB_TXINT_SHIFT;
musb->int_usb = (tmp & DAVINCI_USB_USBINT_MASK)
>> DAVINCI_USB_USBINT_SHIFT;
musb->int_regs = r;
if (tmp & (1 << (8 + DAVINCI_USB_USBINT_SHIFT))) {
int drvvbus = musb_readl(tibase, DAVINCI_USB_STAT_REG);
/* NOTE: this must complete poweron within 100 msec */
DBG(1, "drvvbus Interrupt\n");
#ifndef CONFIG_ARCH_DAVINCI_DM355
#ifdef CONFIG_USB_MUSB_OTG
davinci_vbus_power(musb, drvvbus);
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
/* In host mode manipulate vbus based on core request
* but keep the session on.
*/
davinci_vbus_power(musb, drvvbus);
#endif
#endif
drvvbus = 0;
retval = IRQ_HANDLED;
}
if (musb->int_tx || musb->int_rx || musb->int_usb)
retval |= musb_interrupt(musb);
/* irq stays asserted until EOI is written */
musb_writel(tibase, DAVINCI_USB_EOI_REG, 0);
spin_unlock_irqrestore(&musb->Lock, flags);
/* REVISIT we sometimes get unhandled IRQs with CPPI
* (minimally, host TX). not clear why...
*/
if (retval != IRQ_HANDLED)
DBG(5, "unhandled? %08x\n", tmp);
return IRQ_HANDLED;
}
