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| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2014-07-16 00:45:14 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-07-26 11:38:19 +0200 |
| commit | 39ab196243e8732ad68928be97129305b29afbbd (patch) | |
| tree | bed0e9bb44e94d0cd6d381bb16f67fc5e6110e65 /drivers/mmc/host/tmio_mmc_dma.c | |
| parent | e36152aa84cf68bd7f09acffd480cd2b6aa5480d (diff) | |
| download | linux-39ab196243e8732ad68928be97129305b29afbbd.tar.gz linux-39ab196243e8732ad68928be97129305b29afbbd.tar.bz2 linux-39ab196243e8732ad68928be97129305b29afbbd.zip | |
mmc: tmio: Configure DMA slave bus width
Even though some implementations support 4-bytes data register access,
the tmio driver never configures the hardware in such a way and always
performs 2-bytes accesses. Hardcode the DMA transfer size to 2 bytes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/tmio_mmc_dma.c')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index 03e7b280cb4c..eb8f1d5c34b1 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -294,6 +294,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = pdata->dma->slave_id_tx; cfg.direction = DMA_MEM_TO_DEV; cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->pdata->bus_shift); + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.src_addr = 0; ret = dmaengine_slave_config(host->chan_tx, &cfg); if (ret < 0) @@ -312,6 +313,7 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = pdata->dma->slave_id_rx; cfg.direction = DMA_DEV_TO_MEM; cfg.src_addr = cfg.dst_addr; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.dst_addr = 0; ret = dmaengine_slave_config(host->chan_rx, &cfg); if (ret < 0) |