1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/spi/spi_bitbang_txrx.h b/drivers/spi/spi_bitbang_txrx.h
index fc033bbf9180..c16bf853c3eb 100644
--- a/drivers/spi/spi_bitbang_txrx.h
+++ b/drivers/spi/spi_bitbang_txrx.h
@@ -44,7 +44,7 @@
 
 static inline u32
 bitbang_txrx_be_cpha0(struct spi_device *spi,
-                unsigned nsecs, unsigned cpol,
+                unsigned nsecs, unsigned cpol, unsigned flags,
                 u32 word, u8 bits)
 {
         /* if (cpol == 0) this is SPI_MODE_0; else this is SPI_MODE_2 */
@@ -53,7 +53,8 @@ bitbang_txrx_be_cpha0(struct spi_device *spi,
         for (word <<= (32 - bits); likely(bits); bits--) {
 
                 /* setup MSB (to slave) on trailing edge */
-                setmosi(spi, word & (1 << 31));
+                if ((flags & SPI_MASTER_NO_TX) == 0)
+                        setmosi(spi, word & (1 << 31));
                 spidelay(nsecs);        /* T(setup) */
 
                 setsck(spi, !cpol);
@@ -61,7 +62,8 @@ bitbang_txrx_be_cpha0(struct spi_device *spi,
 
                 /* sample MSB (from slave) on leading edge */
                 word <<= 1;
-                word |= getmiso(spi);
+                if ((flags & SPI_MASTER_NO_RX) == 0)
+                        word |= getmiso(spi);
                 setsck(spi, cpol);
         }
         return word;
@@ -69,7 +71,7 @@ bitbang_txrx_be_cpha0(struct spi_device *spi,
 
 static inline u32
 bitbang_txrx_be_cpha1(struct spi_device *spi,
-                unsigned nsecs, unsigned cpol,
+                unsigned nsecs, unsigned cpol, unsigned flags,
                 u32 word, u8 bits)
 {
         /* if (cpol == 0) this is SPI_MODE_1; else this is SPI_MODE_3 */
@@ -79,7 +81,8 @@ bitbang_txrx_be_cpha1(struct spi_device *spi,
 
                 /* setup MSB (to slave) on leading edge */
                 setsck(spi, !cpol);
-                setmosi(spi, word & (1 << 31));
+                if ((flags & SPI_MASTER_NO_TX) == 0)
+                        setmosi(spi, word & (1 << 31));
                 spidelay(nsecs); /* T(setup) */
 
                 setsck(spi, cpol);
@@ -87,7 +90,8 @@ bitbang_txrx_be_cpha1(struct spi_device *spi,
 
                 /* sample MSB (from slave) on trailing edge */
                 word <<= 1;
-                word |= getmiso(spi);
+                if ((flags & SPI_MASTER_NO_RX) == 0)
+                        word |= getmiso(spi);
         }
         return word;
 }