spi: S3C2410: add bus number to SPI GPIO driver

Allow passing a bus number through the platform data for the S3C2410 SPI
GPIO driver.   This is needed to support multiple SPI busses.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 3 insertions, 0 deletions

diff --git a/drivers/spi/spi_s3c24xx_gpio.c b/drivers/spi/spi_s3c24xx_gpio.c
index d59105dc308b..109d82c1abc0 100644
--- a/drivers/spi/spi_s3c24xx_gpio.c
+++ b/drivers/spi/spi_s3c24xx_gpio.c
@@ -118,6 +118,7 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
 
         /* setup spi bitbang adaptor */
         sp->bitbang.master = spi_master_get(master);
+        sp->bitbang.master->bus_num = info->bus_num;
         sp->bitbang.chipselect = s3c2410_spigpio_chipselect;
 
         sp->bitbang.txrx_word[SPI_MODE_0] = s3c2410_spigpio_txrx_mode0;
diff --git a/include/asm-arm/arch-s3c2410/spi-gpio.h b/include/asm-arm/arch-s3c2410/spi-gpio.h
index c1e4db7c9710..ba1dca88d480 100644
--- a/include/asm-arm/arch-s3c2410/spi-gpio.h
+++ b/include/asm-arm/arch-s3c2410/spi-gpio.h
@@ -21,6 +21,8 @@ struct s3c2410_spigpio_info {
         unsigned long            pin_mosi;
         unsigned long            pin_miso;
 
+        int                      bus_num;
+
         unsigned long            board_size;
         struct spi_board_info   *board_info;