sdhci-omap can support both external dma controller via dmaengine framework
as well as ADMA which standard SD host controller provides.
Signed-off-by: Chunyan Zhang <zhang.chun...@linaro.org>
---
drivers/mmc/host/sdhci-omap.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index 88347ce..ccc79f2 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -896,6 +896,7 @@ static int sdhci_omap_probe(struct platform_device *pdev)
const struct of_device_id *match;
struct sdhci_omap_data *data;
const struct soc_device_attribute *soc;
+ struct resource *regs;
match = of_match_device(omap_sdhci_match, dev);
if (!match)
@@ -908,6 +909,10 @@ static int sdhci_omap_probe(struct platform_device *pdev)
}
offset = data->offset;
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs)
+ return -ENXIO;
+
host = sdhci_pltfm_init(pdev, &sdhci_omap_pdata,
sizeof(*omap_host));
if (IS_ERR(host)) {
@@ -924,6 +929,7 @@ static int sdhci_omap_probe(struct platform_device *pdev)
omap_host->timing = MMC_TIMING_LEGACY;
omap_host->flags = data->flags;
host->ioaddr += offset;
+ host->mapbase = regs->start;
mmc = host->mmc;
sdhci_get_of_property(pdev);
@@ -991,6 +997,7 @@ static int sdhci_omap_probe(struct platform_device *pdev)
host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning;
host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq;
+ sdhci_switch_external_dma(host, true);
ret = sdhci_setup_host(host);
if (ret)
goto err_put_sync;
--
2.7.4
