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authorHarald Welte <laforge@openmoko.org>2007-02-20 16:58:19 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-20 20:10:16 -0500
commitd23c6c21af5624c774adb6fa7155000bfd75ba40 (patch)
treef10a831dc217e3eaba5291ff4a0c32baba55485e /drivers/spi
parentbb2d1c36c7f3a78d482622289c8de0c1a5fe790f (diff)
[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>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi_s3c24xx_gpio.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/spi/spi_s3c24xx_gpio.c b/drivers/spi/spi_s3c24xx_gpio.c
index eda53ed04cbc..611ac22b7cdc 100644
--- 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,
73 return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits); 73 return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
74} 74}
75 75
76static u32 s3c2410_spigpio_txrx_mode2(struct spi_device *spi,
77 unsigned nsecs, u32 word, u8 bits)
78{
79 return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
80}
81
82static u32 s3c2410_spigpio_txrx_mode3(struct spi_device *spi,
83 unsigned nsecs, u32 word, u8 bits)
84{
85 return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
86}
87
88
76static void s3c2410_spigpio_chipselect(struct spi_device *dev, int value) 89static void s3c2410_spigpio_chipselect(struct spi_device *dev, int value)
77{ 90{
78 struct s3c2410_spigpio *sg = spidev_to_sg(dev); 91 struct s3c2410_spigpio *sg = spidev_to_sg(dev);
@@ -108,6 +121,8 @@ static int s3c2410_spigpio_probe(struct platform_device *dev)
108 121
109 sp->bitbang.txrx_word[SPI_MODE_0] = s3c2410_spigpio_txrx_mode0; 122 sp->bitbang.txrx_word[SPI_MODE_0] = s3c2410_spigpio_txrx_mode0;
110 sp->bitbang.txrx_word[SPI_MODE_1] = s3c2410_spigpio_txrx_mode1; 123 sp->bitbang.txrx_word[SPI_MODE_1] = s3c2410_spigpio_txrx_mode1;
124 sp->bitbang.txrx_word[SPI_MODE_2] = s3c2410_spigpio_txrx_mode2;
125 sp->bitbang.txrx_word[SPI_MODE_3] = s3c2410_spigpio_txrx_mode3;
111 126
112 /* set state of spi pins */ 127 /* set state of spi pins */
113 s3c2410_gpio_setpin(sp->info->pin_clk, 0); 128 s3c2410_gpio_setpin(sp->info->pin_clk, 0);