mailbox: bcm-pdc: Changes so mbox client can be removed / re-inserted

Ensure that DMA is disabled, and pointers reset, when changing
DMA base addresses in pdc_ring_init().  This allows a mailbox client
to be re-inserted after being removed.  Otherwise, the DMA doesn't
restart so the client hangs while being reinserted.

Signed-off-by: Steve Lin <steven.lin1@broadcom.com>
Signed-off-by: Rob Rice <rob.rice@broadcom.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

1 files changed, 46 insertions, 8 deletions

diff --git a/drivers/mailbox/bcm-pdc-mailbox.c b/drivers/mailbox/bcm-pdc-mailbox.c

path: root/tools/testing/selftests/powerpc/switch_endian/common.h

#include <ppc-asm.h>
#include <asm/unistd.h>

#ifndef __NR_switch_endian
#define __NR_switch_endian 363
#endif