split start dma function into setup and start dma
to keep track of host_cookie when cmd23 support is enabled
along with async request.
Signed-off-by: Balaji T K <balaj...@ti.com>
---
drivers/mmc/host/omap_hsmmc.c | 26 ++++++++++++++++++--------
1 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d3774b8..b02fd30 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1263,7 +1263,7 @@ static int omap_hsmmc_pre_dma_transfer(struct
omap_hsmmc_host *host,
/*
* Routine to configure and start DMA for the MMC card
*/
-static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
+static int omap_hsmmc_setup_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_request *req)
{
struct dma_slave_config cfg;
@@ -1322,8 +1322,6 @@ static int omap_hsmmc_start_dma_transfer(struct
omap_hsmmc_host *host,
host->dma_ch = 1;
- dma_async_issue_pending(chan);
-
return 0;
}
@@ -1364,6 +1362,21 @@ static void set_data_timeout(struct omap_hsmmc_host
*host,
OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);
}
+static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host)
+{
+ struct mmc_request *req = host->mrq;
+ struct dma_chan *chan;
+
+ if (!req->data)
+ return;
+ OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz)
+ | (req->data->blocks << 16));
+ set_data_timeout(host, req->data->timeout_ns,
+ req->data->timeout_clks);
+ chan = omap_hsmmc_get_dma_chan(host, req->data);
+ dma_async_issue_pending(chan);
+}
+
/*
* Configure block length for MMC/SD cards and initiate the transfer.
*/
@@ -1384,12 +1397,8 @@ omap_hsmmc_prepare_data(struct omap_hsmmc_host *host,
struct mmc_request *req)
return 0;
}
- OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz)
- | (req->data->blocks << 16));
- set_data_timeout(host, req->data->timeout_ns, req->data->timeout_clks);
-
if (host->use_dma) {
- ret = omap_hsmmc_start_dma_transfer(host, req);
+ ret = omap_hsmmc_setup_dma_transfer(host, req);
if (ret != 0) {
dev_err(mmc_dev(host->mmc), "MMC start dma failure\n");
return ret;
@@ -1474,6 +1483,7 @@ static void omap_hsmmc_request(struct mmc_host *mmc,
struct mmc_request *req)
return;
}
+ omap_hsmmc_start_dma_transfer(host);
omap_hsmmc_start_command(host, req->cmd, req->data);
}
--
1.7.5.4
--
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