[ARM] 4826/1: Orion: Register the RTC interrupt on the TS-209

The QNAP TS-209 has its RTC interrupt on GPIO 3. Setup this
as an interrupt and pass it to the i2c_board_info.

Signed-off-by: Byron Bradley <byron.bbradley@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/arm/mach-orion/ts209-setup.c b/arch/arm/mach-orion/ts209-setup.c
index 306dbcd1e37b..b8cfe6813e9d 100644
--- a/arch/arm/mach-orion/ts209-setup.c
+++ b/arch/arm/mach-orion/ts209-setup.c
@@ -192,9 +192,13 @@ static struct mv643xx_eth_platform_data qnap_ts209_eth_data = {
 /*****************************************************************************
  * RTC S35390A on I2C bus
  ****************************************************************************/
+
+#define TS209_RTC_GPIO  3
+
 static struct i2c_board_info __initdata qnap_ts209_i2c_rtc = {
        .driver_name = "rtc-s35390a",
        .addr        = 0x30,
+       .irq         = 0,
 };
 
 /****************************************************************************
@@ -328,7 +332,18 @@ static void __init qnap_ts209_init(void)
 
         platform_add_devices(qnap_ts209_devices,
                                 ARRAY_SIZE(qnap_ts209_devices));
+
+        /* Get RTC IRQ and register the chip */
+        if (gpio_request(TS209_RTC_GPIO, "rtc") == 0) {
+                if (gpio_direction_input(TS209_RTC_GPIO) == 0)
+                        qnap_ts209_i2c_rtc.irq = gpio_to_irq(TS209_RTC_GPIO);
+                else
+                        gpio_free(TS209_RTC_GPIO);
+        }
+        if (qnap_ts209_i2c_rtc.irq == 0)
+                pr_warning("qnap_ts209_init: failed to get RTC IRQ\n");
         i2c_register_board_info(0, &qnap_ts209_i2c_rtc, 1);
+
         orion_eth_init(&qnap_ts209_eth_data);
         orion_sata_init(&qnap_ts209_sata_data);
 }