diff options
Diffstat (limited to 'drivers/mmc/host/atmel-mci.c')
| -rw-r--r-- | drivers/mmc/host/atmel-mci.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index fcfe1eb5acc8..3ba865ddebc4 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -24,6 +24,7 @@ #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/stat.h> +#include <linux/types.h> #include <linux/mmc/host.h> #include <linux/mmc/sdio.h> @@ -173,6 +174,7 @@ struct atmel_mci { struct atmel_mci_dma dma; struct dma_chan *data_chan; + struct dma_slave_config dma_conf; u32 cmd_status; u32 data_status; @@ -863,15 +865,16 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) { direction = DMA_FROM_DEVICE; - slave_dirn = DMA_DEV_TO_MEM; + host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM; } else { direction = DMA_TO_DEVICE; - slave_dirn = DMA_MEM_TO_DEV; + host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV; } sglen = dma_map_sg(chan->device->dev, data->sg, data->sg_len, direction); + dmaengine_slave_config(chan, &host->dma_conf); desc = chan->device->device_prep_slave_sg(chan, data->sg, sglen, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); @@ -1957,22 +1960,27 @@ static void atmci_configure_dma(struct atmel_mci *host) if (pdata && find_slave_dev(pdata->dma_slave)) { dma_cap_mask_t mask; - setup_dma_addr(pdata->dma_slave, - host->mapbase + ATMCI_TDR, - host->mapbase + ATMCI_RDR); - /* Try to grab a DMA channel */ dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); host->dma.chan = dma_request_channel(mask, atmci_filter, pdata->dma_slave); } - if (!host->dma.chan) + if (!host->dma.chan) { dev_notice(&host->pdev->dev, "DMA not available, using PIO\n"); - else + } else { dev_info(&host->pdev->dev, "Using %s for DMA transfers\n", dma_chan_name(host->dma.chan)); + + host->dma_conf.src_addr = host->mapbase + ATMCI_RDR; + host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.src_maxburst = 1; + host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR; + host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.dst_maxburst = 1; + host->dma_conf.device_fc = false; + } } static inline unsigned int atmci_get_version(struct atmel_mci *host) |