[PATCH] spi_s3c2410_gpio.c spi mode 2 and 3 support

Add transfer modes 2 and 3 to the S3C24XX gpio SPI driver

Signed-off-by: Harald Welte <laforge@openmoko.org>
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>

diff --git a/drivers/spi/spi_s3c24xx_gpio.c b/drivers/spi/spi_s3c24xx_gpio.c
index eda53ed04cbc9cbefc3569762a5ce965c669a243..611ac22b7cdc2c404e69c07d8dfbcd4e73b1db7c 100644 (file)
--- a/drivers/spi/spi_s3c24xx_gpio.c
+++ b/drivers/spi/spi_s3c24xx_gpio.c
@@ -73,6 +73,19 @@ static u32 s3c2410_spigpio_txrx_mode1(struct spi_device *spi,
        return bitbang_txrx_be_cpha1(spi, nsecs, 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);
+}
+
+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);
+}
+
+
 static void s3c2410_spigpio_chipselect(struct spi_device *dev, int value)
 {
        struct s3c2410_spigpio *sg = spidev_to_sg(dev);
@@ -108,6 +121,8 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
 
        sp->bitbang.txrx_word[SPI_MODE_0] = s3c2410_spigpio_txrx_mode0;
        sp->bitbang.txrx_word[SPI_MODE_1] = s3c2410_spigpio_txrx_mode1;
+       sp->bitbang.txrx_word[SPI_MODE_2] = s3c2410_spigpio_txrx_mode2;
+       sp->bitbang.txrx_word[SPI_MODE_3] = s3c2410_spigpio_txrx_mode3;
 
        /* set state of spi pins */
        s3c2410_gpio_setpin(sp->info->pin_clk, 0);