static int sdma_config_channel(struct sdma_channel *sdmac)
{
int ret;
sdma_disable_channel(sdmac);
sdmac->event_mask0 = 0;
sdmac->event_mask1 = 0;
sdmac->shp_addr = 0;
sdmac->per_addr = 0;
if (sdmac->event_id0)
sdma_event_enable(sdmac, sdmac->event_id0);
if (sdmac->event_id1)
sdma_event_enable(sdmac, sdmac->event_id1);
switch (sdmac->peripheral_type) {
case IMX_DMATYPE_DSP:
sdma_config_ownership(sdmac, false, true, true);
break;
case IMX_DMATYPE_MEMORY:
sdma_config_ownership(sdmac, false, true, false);
break;
default:
sdma_config_ownership(sdmac, true, true, false);
break;
}
sdma_get_pc(sdmac, sdmac->peripheral_type);
if ((sdmac->peripheral_type != IMX_DMATYPE_MEMORY) &&
(sdmac->peripheral_type != IMX_DMATYPE_DSP)) {
/* Handle multiple event channels differently */
if (sdmac->event_id1) {
sdmac->event_mask1 = 1 << (sdmac->event_id1 % 32);
if (sdmac->event_id1 > 31)
sdmac->watermark_level |= 1 << 29;
sdmac->event_mask0 = 1 << (sdmac->event_id0 % 32);
if (sdmac->event_id0 > 31)
sdmac->watermark_level |= 1 << 28;
} else {
sdmac->event_mask0 = 1 << sdmac->event_id0;
sdmac->event_mask1 = 1 << (sdmac->event_id0 - 32);
}
/* Watermark Level */
sdmac->watermark_level |= sdmac->watermark_level;
/* Address */
sdmac->shp_addr = sdmac->per_address;
} else {
sdmac->watermark_level = 0; /* FIXME: M3_BASE_ADDRESS */
}
ret = sdma_load_context(sdmac);
return ret;
}
void *sdma_xillybus_init(void *userdata, irq_handler_t handler)
{
xillybus_userdata = userdata;
xillybus_handler = handler;
sdma_event_enable(xillybus_sdmac, 15); /* Connect to channel 15 */
sdma_config_ownership(xillybus_sdmac, true, false, false);
return cs2_base;
}