[PATCH v4 11/13] mmc: Introduce mmc_phys_to_bus()/mmc_bus_to_phys()

[Nicolas Saenz Julienne]

This will allow us to use DM variants of phys_to_bus()/bus_to_phys()
when relevant.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne at suse.de>
Reviewed-by: Simon Glass <sjg at chromium.org>

---
Changes since v3
 - Don't call phys_to_bus()/bus_to_phys(), we only support DM

 drivers/mmc/sdhci.c |  7 ++++---
 include/mmc.h       | 10 ++++++++++
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 0628934312..2086d7cdb1 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -19,7 +19,6 @@
 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
-#include <phys2bus.h>
 
 static void sdhci_reset(struct sdhci_host *host, u8 mask)
 {
@@ -103,7 +102,8 @@ static void sdhci_prepare_dma(struct sdhci_host *host, struct mmc_data *data,
 					  mmc_get_dma_dir(data));
 
 	if (host->flags & USE_SDMA) {
-		sdhci_writel(host, phys_to_bus((ulong)host->start_addr),
+		sdhci_writel(host,
+			     mmc_phys_to_bus(host->mmc, (ulong)host->start_addr),
 				SDHCI_DMA_ADDRESS);
 	}
 #if CONFIG_IS_ENABLED(MMC_SDHCI_ADMA)
@@ -162,7 +162,8 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data)
 				start_addr &=
 				~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
 				start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
-				sdhci_writel(host, phys_to_bus((ulong)start_addr),
+				sdhci_writel(host,
+					     mmc_phys_to_bus(host->mmc, (ulong)start_addr),
 					     SDHCI_DMA_ADDRESS);
 			}
 		}
diff --git a/include/mmc.h b/include/mmc.h
index 1d377e0281..393c08d5a9 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -15,6 +15,7 @@
 #include <linux/compiler.h>
 #include <linux/dma-direction.h>
 #include <part.h>
+#include <phys2bus.h>
 
 struct bd_info;
 
@@ -977,4 +978,13 @@ static inline enum dma_data_direction mmc_get_dma_dir(struct mmc_data *data)
 	return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
 }
 
+static inline dma_addr_t mmc_phys_to_bus(struct mmc *mmc, phys_addr_t addr)
+{
+#if CONFIG_IS_ENABLED(DM_DMA)
+	return dev_phys_to_bus(mmc->dev, addr);
+#else
+	return (dma_addr_t)addr;
+#endif
+}
+
 #endif /* _MMC_H_ */
-- 
2.29.2