mmc: alcor: enable DMA for writes
Enable the DMA codepath for writes as well as reads.
This improves write speed from 1mb/sec to 2mb/sec (tested with dd).
The original ampe_stor vendor driver also uses DMA for writes.
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
diff --git a/drivers/mmc/host/alcor.c b/drivers/mmc/host/alcor.c
index 7c8f203..3e2efbf 100644
--- a/drivers/mmc/host/alcor.c
+++ b/drivers/mmc/host/alcor.c
@@ -771,7 +771,8 @@
data->host_cookie = COOKIE_UNMAPPED;
/* FIXME: looks like the DMA engine works only with CMD18 */
- if (cmd->opcode != 18)
+ if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK
+ && cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK)
return;
/*
* We don't do DMA on "complex" transfers, i.e. with
