fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / linux / spi / spi_bitbang.h

diff --git a/include/linux/spi/spi_bitbang.h b/include/linux/spi/spi_bitbang.h
index c961fe9..16ce178 100644 (file)
--- 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);