[PATCH] ARM: COLIBRI PXA320: fix UCB1400 irq autoprobing

[Yuri Ludkevich]

Ads properly initialization to GPIO4 ( alt. fn. #1, nCS3; because GPIO4 and
GPIO4_2 cannot be
configured as GPIO simultaneously ) so GPIO4_2 which used as irq line from
UCB1400 may be
detected while irq autoprobing routine.

Signed-off by: Yuri Ludkevich <urx.forever at gmail.com>
---

--- linux-next/arch/arm/mach-pxa/colibri-pxa320.c.orig  2010-08-11
16:01:46.000000000 +0400
+++ linux-next/arch/arm/mach-pxa/colibri-pxa320.c       2010-08-11
16:23:30.000000000 +0400
@@ -236,6 +236,19 @@ static void __init colibri_pxa320_init_u
        pxa3xx_mfp_config(ARRAY_AND_SIZE(colibri_pxa320_uart_pin_config));
 }

+
+static mfp_cfg_t colibri_pxa320_cpld_pin_config[] __initdata = {
+       /* init GPIO4 as nCS3 (AF1). If GPIO4 stay as GPIO
+          touchscreen irq (GPIO4_2 pin) autoprobing will not work.
+          See Marvell PXA320 datasheet for more details */
+       GPIO4_nCS3,
+};
+
+static void __init colibri_pxa320_init_cpld(void)
+{
+       pxa3xx_mfp_config(ARRAY_AND_SIZE(colibri_pxa320_cpld_pin_config));
+}
+
 void __init colibri_pxa320_init(void)
 {
        pxa_set_ffuart_info(NULL);
@@ -252,6 +265,7 @@ void __init colibri_pxa320_init(void)
                                mfp_to_gpio(MFP_PIN_GPIO28));
        colibri_pxa320_init_uart();
        colibri_pxa320_init_udc();
+       colibri_pxa320_init_cpld();
 }

 MACHINE_START(COLIBRI320, "Toradex Colibri PXA320")
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