X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fspi%2Fspi_bitbang.h;h=16ce178f54d7a0de40a69ebabfdddc488f4039fa;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=c961fe9bf3eb48f3576035a7ec62bc5c743bc008;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index c961fe9bf..16ce178f5 100644
--- a/include/linux/spi/spi_bitbang.h
+++ b/include/linux/spi/spi_bitbang.h
@@ -30,6 +30,12 @@ struct spi_bitbang {
 
 	struct spi_master	*master;
 
+	/* setup_transfer() changes clock and/or wordsize to match settings
+	 * for this transfer; zeroes restore defaults from spi_device.
+	 */
+	int	(*setup_transfer)(struct spi_device *spi,
+			struct spi_transfer *t);
+
 	void	(*chipselect)(struct spi_device *spi, int is_on);
 #define	BITBANG_CS_ACTIVE	1	/* normally nCS, active low */
 #define	BITBANG_CS_INACTIVE	0
@@ -51,6 +57,8 @@ struct spi_bitbang {
 extern int spi_bitbang_setup(struct spi_device *spi);
 extern void spi_bitbang_cleanup(const struct spi_device *spi);
 extern int spi_bitbang_transfer(struct spi_device *spi, struct spi_message *m);
+extern int spi_bitbang_setup_transfer(struct spi_device *spi,
+				      struct spi_transfer *t);
 
 /* start or stop queue processing */
 extern int spi_bitbang_start(struct spi_bitbang *spi);