From: Kuninori Morimoto <[email protected]> Renesas SDHI which is based on TMIO driver has 2 type SoC. 1st one is used as SH-Mobile series, and 2nd is R-Car series. R-Car series SoC has DMA buswidth setting register which enables 32bit access. This patch adds .dma_buswidth and enables it.
Signed-off-by: Kuninori Morimoto <[email protected]> --- drivers/mmc/host/tmio_mmc.h | 2 ++ drivers/mmc/host/tmio_mmc_dma.c | 8 ++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 0699edb..fc3805e 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -16,6 +16,7 @@ #ifndef TMIO_MMC_H #define TMIO_MMC_H +#include <linux/dmaengine.h> #include <linux/highmem.h> #include <linux/mmc/tmio.h> #include <linux/mutex.h> @@ -46,6 +47,7 @@ struct tmio_mmc_dma { void *chan_priv_rx; int slave_id_tx; int slave_id_rx; + enum dma_slave_buswidth dma_buswidth; bool (*filter)(struct dma_chan *chan, void *arg); void (*enable)(struct tmio_mmc_host *host, bool enable); }; diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index eb6b45c..aa5f4b6 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -293,7 +293,9 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = host->dma->slave_id_tx; cfg.direction = DMA_MEM_TO_DEV; cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->bus_shift); - cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + cfg.dst_addr_width = host->dma->dma_buswidth; + if (!cfg.dst_addr_width) + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.src_addr = 0; ret = dmaengine_slave_config(host->chan_tx, &cfg); if (ret < 0) @@ -312,7 +314,9 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat cfg.slave_id = host->dma->slave_id_rx; cfg.direction = DMA_DEV_TO_MEM; cfg.src_addr = cfg.dst_addr + host->pdata->dma_rx_offset; - cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + cfg.src_addr_width = host->dma->dma_buswidth; + if (!cfg.src_addr_width) + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; cfg.dst_addr = 0; ret = dmaengine_slave_config(host->chan_rx, &cfg); if (ret < 0) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
