From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
Some controllers need DMA special register/setting.
This patch adds new .enable_dma callback for it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
drivers/mmc/host/tmio_mmc.h | 2 ++
drivers/mmc/host/tmio_mmc_dma.c | 3 +++
2 files changed, 5 insertions(+)
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index c9a8469..0699edb 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -39,6 +39,7 @@
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
struct tmio_mmc_data;
+struct tmio_mmc_host;
struct tmio_mmc_dma {
void *chan_priv_tx;
@@ -46,6 +47,7 @@ struct tmio_mmc_dma {
int slave_id_tx;
int slave_id_rx;
bool (*filter)(struct dma_chan *chan, void *arg);
+ void (*enable)(struct tmio_mmc_host *host, bool enable);
};
struct tmio_mmc_host {
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 634b2700c..eb6b45c 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -30,6 +30,9 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable)
if (host->pdata->flags & TMIO_MMC_HAVE_CTL_DMA_REG)
sd_ctrl_write16(host, CTL_DMA_ENABLE, enable ? 2 : 0);
+
+ if (host->dma->enable)
+ host->dma->enable(host, enable);
}
void tmio_mmc_abort_dma(struct tmio_mmc_host *host)
--
1.7.9.5
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