[PATCH] mfd: pcap: depend on arch-pxa

[haojian.zhuang@gmail.com (Haojian Zhuang)]

drivers/mfd/ezx-pcap.c: In function ?pcap_isr_work?:
drivers/mfd/ezx-pcap.c:206:2: error: implicit declaration of function
?pxa_irq_to_gpio?
make[2]: *** [drivers/mfd/ezx-pcap.o] Error 1

PCAP driver invokes irq_to_gpio() directly. This function isn't common
function in most silicons. PCAP driver is enabled for EZX machine with
arch-pxa. Now use pxa_irq_to_gpio() instead.

It's only a workaround for this issue. Acutally the best solution is
using thread irq to fix this issue.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
---
 drivers/mfd/Kconfig    |    2 +-
 drivers/mfd/ezx-pcap.c |    3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index f147395..e88d315 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -619,7 +619,7 @@ config AB3100_OTP
 
 config EZX_PCAP
 	bool "PCAP Support"
-	depends on GENERIC_HARDIRQS && SPI_MASTER
+	depends on GENERIC_HARDIRQS && SPI_MASTER && ARCH_PXA
 	help
 	  This enables the PCAP ASIC present on EZX Phones. This is
 	  needed for MMC, TouchScreen, Sound, USB, etc..
diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index 43a76c4..e9320e2 100644
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -18,6 +18,7 @@
 #include <linux/mfd/ezx-pcap.h>
 #include <linux/spi/spi.h>
 #include <linux/gpio.h>
+#include <linux/gpio-pxa.h>
 #include <linux/slab.h>
 
 #define PCAP_ADC_MAXQ		8
@@ -202,7 +203,7 @@ static void pcap_isr_work(struct work_struct *work)
 		}
 		local_irq_enable();
 		ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
-	} while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
+	} while (gpio_get_value(pxa_irq_to_gpio(pcap->spi->irq)));
 }
 
 static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
-- 
1.7.5.4