2 messages, 2 authors, 2001-09-21 · open the first message on its own page
From: Steven Scholz <hidden>
Date: 2001-09-21 10:01:31
Hi there, I am about to write a device driver using Peripheral/Memory DMA. Can anyone point me to some driver code already in the recent linuxppc that are using the MPC's IDMA, please? Cheers, Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
From: Dan Malek <hidden>
Date: 2001-09-21 20:39:02
Steven Scholz wrote:
Can anyone point me to some driver code already in the recent linuxppc that are using the MPC's IDMA, please?
All of the MPC8xx unique drivers use DMA....it's the only way to transfer data through the CPM. Just take one of the drivers, like uart.c or enet.c, and remove everything except the buffer descriptor management. Then just add the few lines of code to initialize the IDMA channel and you are done. -- Dan ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/