The new pinctrl-s3c64xx is responsible for EINT handling on DT-enabled platforms.
Signed-off-by: Tomasz Figa <[email protected]> --- arch/arm/mach-s3c64xx/common.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-s3c64xx/common.c b/arch/arm/mach-s3c64xx/common.c index e79ca92..866be9e 100644 --- a/arch/arm/mach-s3c64xx/common.c +++ b/arch/arm/mach-s3c64xx/common.c @@ -365,7 +365,25 @@ static void s3c_irq_demux_eint20_27(unsigned int irq, struct irq_desc *desc) static int __init s3c64xx_init_irq_eint(void) { int irq; - +#if defined(CONFIG_PINCTRL_S3C64XX) + /* + * This gpio driver includes support for device tree support and there + * are platforms using it. In order to maintain compatibility with those + * platforms, and to allow non-dt Exynos4210 platforms to use this + * gpiolib support, a check is added to find out if there is a active + * pin-controller driver support available. If it is available, this + * gpiolib support is ignored and the gpiolib support available in + * pin-controller driver is used. This is a temporary check and will go + * away when all of the Exynos4210 platforms have switched to using + * device tree and the pin-ctrl driver. + */ + struct device_node *pctrl_np; + + pctrl_np = of_find_compatible_node(NULL, NULL, + "samsung,s3c64xx-pinctrl"); + if (pctrl_np && of_device_is_available(pctrl_np)) + return -ENODEV; +#endif for (irq = IRQ_EINT(0); irq <= IRQ_EINT(27); irq++) { irq_set_chip_and_handler(irq, &s3c_irq_eint, handle_level_irq); irq_set_chip_data(irq, (void *)eint_irq_to_bit(irq)); -- 1.8.1.5 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
