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mmc: tmio: enable SoC specific DMA buswidth settings
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 <kuninori.morimoto.gx@renesas.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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@ -16,6 +16,7 @@
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#ifndef TMIO_MMC_H
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#define TMIO_MMC_H
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#include <linux/dmaengine.h>
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#include <linux/highmem.h>
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#include <linux/mmc/tmio.h>
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#include <linux/mutex.h>
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@ -46,6 +47,7 @@ struct tmio_mmc_dma {
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void *chan_priv_rx;
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int slave_id_tx;
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int slave_id_rx;
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enum dma_slave_buswidth dma_buswidth;
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bool (*filter)(struct dma_chan *chan, void *arg);
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void (*enable)(struct tmio_mmc_host *host, bool enable);
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};
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@ -293,7 +293,9 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
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cfg.slave_id = host->dma->slave_id_tx;
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cfg.direction = DMA_MEM_TO_DEV;
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cfg.dst_addr = res->start + (CTL_SD_DATA_PORT << host->bus_shift);
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cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.dst_addr_width = host->dma->dma_buswidth;
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if (!cfg.dst_addr_width)
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cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.src_addr = 0;
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ret = dmaengine_slave_config(host->chan_tx, &cfg);
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if (ret < 0)
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@ -312,7 +314,9 @@ void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdat
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cfg.slave_id = host->dma->slave_id_rx;
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cfg.direction = DMA_DEV_TO_MEM;
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cfg.src_addr = cfg.dst_addr + host->pdata->dma_rx_offset;
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cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.src_addr_width = host->dma->dma_buswidth;
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if (!cfg.src_addr_width)
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cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
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cfg.dst_addr = 0;
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ret = dmaengine_slave_config(host->chan_rx, &cfg);
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if (ret < 0)
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