spi: SuperH SPI using SCI

Add support for SPI over SCI pins.  SCI is a very simple serial controller
block that can be found on older SuperH processors.  In theory it is
possible to use the SCI hardware block in syncronous mode, but this version
of the driver simply hooks up the bit banging code on the SCI pins.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index aaaea81e412a..69e28ed272c1 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -176,6 +176,13 @@ config SPI_S3C24XX_GPIO
           the inbuilt hardware cannot provide the transfer mode, or
           where the board is using non hardware connected pins.
 
+config SPI_SH_SCI
+        tristate "SuperH SCI SPI controller"
+        depends on SPI_MASTER && SUPERH
+        select SPI_BITBANG
+        help
+          SPI driver for SuperH SCI blocks.
+
 config SPI_TXX9
         tristate "Toshiba TXx9 SPI controller"
         depends on SPI_MASTER && GENERIC_GPIO && CPU_TX49XX