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mmc: renesas_sdhi: use helpers to access struct scatterlist members 

Instead of directly accessing the members of struct scatterlist use the
helpers mmc_get_dma_dir() and sg_dma_address() in
renesas_sdhi_internal_dmac_start_dma(). Based on previous work by
Masaharu Hayakawa.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
[rebased to mmc/next]
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Niklas Söderlund 2018-04-18 20:20:58 +02:00 committed by Ulf Hansson
parent bb26b8412d
commit a028b435bf
1 changed files with 3 additions and 5 deletions
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8
drivers/mmc/host/renesas_sdhi_internal_dmac.c
View File

@ -157,7 +157,6 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
{
struct scatterlist *sg = host->sg_ptr;
u32 dtran_mode = DTRAN_MODE_BUS_WID_TH | DTRAN_MODE_ADDR_MODE;
enum dma_data_direction dir;
int ret;
/* This DMAC cannot handle if sg_len is not 1 */
@ -169,16 +168,15 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
if (data->flags & MMC_DATA_READ) {
dtran_mode |= DTRAN_MODE_CH_NUM_CH1;
dir = DMA_FROM_DEVICE;
if (test_bit(SDHI_INTERNAL_DMAC_ONE_RX_ONLY, &global_flags) &&
test_and_set_bit(SDHI_INTERNAL_DMAC_RX_IN_USE, &global_flags))
goto force_pio;
} else {
dtran_mode |= DTRAN_MODE_CH_NUM_CH0;
dir = DMA_TO_DEVICE;
}
ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len, dir);
ret = dma_map_sg(&host->pdev->dev, sg, host->sg_len,
mmc_get_dma_dir(data));
if (ret == 0)
goto force_pio;
@ -188,7 +186,7 @@ renesas_sdhi_internal_dmac_start_dma(struct tmio_mmc_host *host,
renesas_sdhi_internal_dmac_dm_write(host, DM_CM_DTRAN_MODE,
dtran_mode);
renesas_sdhi_internal_dmac_dm_write(host, DM_DTRAN_ADDR,
sg->dma_address);
sg_dma_address(sg));
return;