/**
* \brief This API sets the DMA mode for each channel
*
* \param dmaMde :- mode for rx and Tx.
*
*\param epInfo:- End point info structure
*
* \return None.
*
**/
void Cppi41DmaModeSet(unsigned short usbDevInst, endpointInfo *epInfo)
{
usbInstance *usbInstance;
usbInstance = &(cppiInfo.usbInst[usbDevInst]);
/* Enable RNDIS from Global Level */
if (epInfo->dmaMode == CPDMA_MODE_SET_RNDIS)
{
HWREG(usbInstance->otgBaseAddress + USB_0_CTRL)|=
CPDMA_MODE_ENABLE_GLOBAL_RNDIS;
}
/* Disable RNDIS from Global Level */
else
{
HWREG(usbInstance->otgBaseAddress + USB_0_CTRL)&=
~CPDMA_MODE_ENABLE_GLOBAL_RNDIS;
}
/*Set the mode for RX and TX channel */
if(epInfo->direction == CPDMA_DIR_TX)
{
HWREG(usbInstance->otgBaseAddress + USB_0_MODE)|=
(epInfo->dmaMode << USB_TX_MODE_SHIFT(epInfo->endPoint));
}
else
{
HWREG(usbInstance->otgBaseAddress + USB_0_MODE)|=
(epInfo->dmaMode<< USB_RX_MODE_SHIFT(epInfo->endPoint));
}
/* For GRNDIS mode, set the maximum packet length */
if (epInfo->dmaMode == CPDMA_MODE_SET_GRNDIS)
{
if(usbDevInst == 0)
{
HWREG(usbInstance->otgBaseAddress + USB_0_GEN_RNDIS_SIZE_EP1) =
GRNDIS_MAX_PACKET_LENGTH;
}
else if(usbDevInst == 1)
{
#if defined (am335x_15x15) || defined(am335x) || defined(c6a811x)
HWREG(usbInstance->otgBaseAddress + USB_1_GEN_RNDIS_SIZE_EP1) =
GRNDIS_MAX_PACKET_LENGTH;
#endif
}
}
}
static void cppi41_mode_update(struct cppi41_channel *cppi_ch, u8 mode)
{
if (mode != cppi_ch->dma_mode) {
struct cppi41 *cppi = cppi_ch->channel.private_data;
void *__iomem reg_base = cppi->musb->ctrl_base;
u32 reg_val;
u8 ep_num = cppi_ch->ch_num + 1;
if (cppi_ch->transmit) {
reg_val = musb_readl(reg_base, USB_TX_MODE_REG);
reg_val &= ~USB_TX_MODE_MASK(ep_num);
reg_val |= mode << USB_TX_MODE_SHIFT(ep_num);
musb_writel(reg_base, USB_TX_MODE_REG, reg_val);
} else {
reg_val = musb_readl(reg_base, USB_RX_MODE_REG);
reg_val &= ~USB_RX_MODE_MASK(ep_num);
reg_val |= mode << USB_RX_MODE_SHIFT(ep_num);
musb_writel(reg_base, USB_RX_MODE_REG, reg_val);
}
cppi_ch->dma_mode = mode;
}
}
