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

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

Signed-off-by: Harald Welte <[email protected]>
Signed-off-by: Ben Dooks <[email protected]>
Signed-off-by: David Brownell <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Harald Welte 2007-02-20 13:58:19 -08:00 • committed by Linus Torvalds
commit d23c6c21af
1 changed files with 15 additions and 0 deletions
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15
drivers/spi/spi_s3c24xx_gpio.c
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@ -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);