Add a gpio configuration callback for the s3c24xx SPI driver, as
there are several options depending on the channel and the chip
in use.
This is needed as the controller may not have been setup by the
initial bootloader and the fact that the SPI controller gets
reset over suspend/resume into slave mode but the GPIO function
registers do not.
Signed-off-by: Ben Dooks <[EMAIL PROTECTED]>
Index: linux-2.6.27-rc1-quilt1/drivers/spi/spi_s3c24xx.c
===================================================================
--- linux-2.6.27-rc1-quilt1.orig/drivers/spi/spi_s3c24xx.c 2008-08-04
11:46:12.000000000 +0100
+++ linux-2.6.27-rc1-quilt1/drivers/spi/spi_s3c24xx.c 2008-08-04
11:46:54.000000000 +0100
@@ -247,6 +247,9 @@ static void s3c24xx_spi_initialsetup(str
writeb(0xff, hw->regs + S3C2410_SPPRE);
writeb(SPPIN_DEFAULT, hw->regs + S3C2410_SPPIN);
writeb(SPCON_DEFAULT, hw->regs + S3C2410_SPCON);
+
+ if (hw->pdata && hw->pdata->gpio_setup)
+ hw->pdata->gpio_setup(hw->pdata, 1);
}
static int __init s3c24xx_spi_probe(struct platform_device *pdev)
@@ -412,6 +415,9 @@ static int s3c24xx_spi_suspend(struct pl
{
struct s3c24xx_spi *hw = platform_get_drvdata(pdev);
+ if (hw->pdata && hw->pdata->gpio_setup)
+ hw->pdata->gpio_setup(hw->pdata, 0);
+
clk_disable(hw->clk);
return 0;
}
Index: linux-2.6.27-rc1-quilt1/arch/arm/mach-s3c2410/include/mach/spi.h
===================================================================
--- linux-2.6.27-rc1-quilt1.orig/arch/arm/mach-s3c2410/include/mach/spi.h
2008-08-04 11:45:55.000000000 +0100
+++ linux-2.6.27-rc1-quilt1/arch/arm/mach-s3c2410/include/mach/spi.h
2008-08-04 11:46:13.000000000 +0100
@@ -18,6 +18,7 @@ struct s3c2410_spi_info {
unsigned int num_cs; /* total chipselects */
int bus_num; /* bus number to use. */
+ void (*gpio_setup)(struct s3c2410_spi_info *spi, int enable);
void (*set_cs)(struct s3c2410_spi_info *spi, int cs, int pol);
};
--
Ben ([EMAIL PROTECTED], http://www.fluff.org/)
'a smiley only costs 4 bytes'
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