6 files changed, 24 insertions, 20 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;
 }
diff --git a/drivers/spi/spi_butterfly.c b/drivers/spi/spi_butterfly.c
index 8b5281281111..0d4ceba3b590 100644
--- a/drivers/spi/spi_butterfly.c
+++ b/drivers/spi/spi_butterfly.c
@@ -156,7 +156,7 @@ butterfly_txrx_word_mode0(struct spi_device *spi,
                 unsigned nsecs,
                 u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
 }
 
 /*----------------------------------------------------------------------*/
diff --git a/drivers/spi/spi_gpio.c b/drivers/spi/spi_gpio.c
index 7edbd5807e0e..82b480cc9637 100644
--- a/drivers/spi/spi_gpio.c
+++ b/drivers/spi/spi_gpio.c
@@ -146,25 +146,25 @@ static inline int getmiso(const struct spi_device *spi)
 static u32 spi_gpio_txrx_word_mode0(struct spi_device *spi,
                 unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 spi_gpio_txrx_word_mode1(struct spi_device *spi,
                 unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 spi_gpio_txrx_word_mode2(struct spi_device *spi,
                 unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);
 }
 
 static u32 spi_gpio_txrx_word_mode3(struct spi_device *spi,
                 unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);
 }
 
 /*----------------------------------------------------------------------*/
diff --git a/drivers/spi/spi_lm70llp.c b/drivers/spi/spi_lm70llp.c
index 86fb7b5993db..7746a41ab6d6 100644
--- a/drivers/spi/spi_lm70llp.c
+++ b/drivers/spi/spi_lm70llp.c
@@ -191,7 +191,7 @@ static void lm70_chipselect(struct spi_device *spi, int value)
  */
 static u32 lm70_txrx(struct spi_device *spi, unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
 }
 
 static void spi_lm70llp_attach(struct parport *p)
diff --git a/drivers/spi/spi_s3c24xx_gpio.c b/drivers/spi/spi_s3c24xx_gpio.c
index 8979a75dbd7b..be991359bf92 100644
--- a/drivers/spi/spi_s3c24xx_gpio.c
+++ b/drivers/spi/spi_s3c24xx_gpio.c
@@ -64,25 +64,25 @@ static inline u32 getmiso(struct spi_device *dev)
 static u32 s3c2410_spigpio_txrx_mode0(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 s3c2410_spigpio_txrx_mode1(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 s3c2410_spigpio_txrx_mode2(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);
 }
 
 static u32 s3c2410_spigpio_txrx_mode3(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);
 }
 
 
diff --git a/drivers/spi/spi_sh_sci.c b/drivers/spi/spi_sh_sci.c
index a511be7961a0..5c6439161199 100644
--- a/drivers/spi/spi_sh_sci.c
+++ b/drivers/spi/spi_sh_sci.c
@@ -83,25 +83,25 @@ static inline u32 getmiso(struct spi_device *dev)
 static u32 sh_sci_spi_txrx_mode0(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 sh_sci_spi_txrx_mode1(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits);
 }
 
 static u32 sh_sci_spi_txrx_mode2(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits);
 }
 
 static u32 sh_sci_spi_txrx_mode3(struct spi_device *spi,
                                       unsigned nsecs, u32 word, u8 bits)
 {
-        return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
+        return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits);
 }
 
 static void sh_sci_spi_chipselect(struct spi_device *dev, int value)