Hello!
On 1/19/2017 1:06 PM, Alexandre Bailon wrote:
Currently, the CPPI 4.1 driver is not completely generic and
only work on dsps. This is because of IRQ management.
Works. DSPS.
Add a callback to dma_controller that could be invoked on DMA completion
to acknodlege the IRQ.
Acknowledge.
Signed-off-by: Alexandre Bailon <abailon@xxxxxxxxxxxx>
[...]
diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h
index 46357e1..8bea0cd 100644
--- a/drivers/usb/musb/musb_dma.h
+++ b/drivers/usb/musb/musb_dma.h
@@ -181,10 +181,13 @@ dma_channel_status(struct dma_channel *c)
* @channel_release: call this to release a DMA channel
* @channel_abort: call this to abort a pending DMA transaction,
* returning it to FREE (but allocated) state
+ * @platform_dma_callback: invoked on DMA completion, useful to run platform
It's called just dma_callback below.
+ * code such IRQ acknowledgment.
*
* Controllers manage dma channels.
*/
struct dma_controller {
+ struct musb *musb;
You forgot to document this above.
struct dma_channel *(*channel_alloc)(struct dma_controller *,
struct musb_hw_ep *, u8 is_tx);
void (*channel_release)(struct dma_channel *);
@@ -196,6 +199,7 @@ struct dma_controller {
int (*is_compatible)(struct dma_channel *channel,
u16 maxpacket,
void *buf, u32 length);
+ void (*dma_callback)(struct dma_controller *);
};
/* called after channel_program(), may indicate a fault */
MBR, Sergei
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