A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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spi_s3c24xx: pin configuration updates

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Add a pin 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]>
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:
Ben Dooks 2008-10-15 22:02:41 -07:00 • committed by Linus Torvalds
commit cf46b973f7
2 changed files with 7 additions and 0 deletions
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6
drivers/spi/spi_s3c24xx.c
View file

@ -247,6 +247,9 @@ static void s3c24xx_spi_initialsetup(struct s3c24xx_spi *hw)
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 platform_device *pdev, pm_message_t msg)
{
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;
}