[PATCH 05/17] ARM: pxa/raumfeld: add rotary encoder support

[daniel@caiaq.de (Daniel Mack)]

The 'Controller' and 'Speaker S/M' have a rotary encoder device for
volume control.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
---
 arch/arm/mach-pxa/raumfeld.c |   35 +++++++++++++++++++++++++++++++++++
 1 files changed, 35 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index 2d47dc2..a2a2b18 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -23,6 +23,8 @@
 #include <linux/interrupt.h>
 #include <linux/gpio.h>
 #include <linux/smsc911x.h>
+#include <linux/input.h>
+#include <linux/rotary_encoder.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -153,6 +155,27 @@ static struct pxaohci_platform_data raumfeld_ohci_info = {
 	.flags		= ENABLE_PORT1,
 };
 
+/**
+ * Rotary encoder input device
+ */
+static struct rotary_encoder_platform_data raumfeld_rotary_encoder_info = {
+	.steps		= 24,
+	.axis		= REL_X,
+	.relative_axis	= 1,
+	.gpio_a		= mfp_to_gpio(GPIO_VOLENC_A),
+	.gpio_b		= mfp_to_gpio(GPIO_VOLENC_B),
+	.inverted_a	= 1,
+	.inverted_b	= 0,
+};
+
+static struct platform_device rotary_encoder_device = {
+	.name		= "rotary-encoder",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &raumfeld_rotary_encoder_info,
+	}
+};
+
 static void __init raumfeld_common_init(void)
 {
 	enable_irq_wake(IRQ_WAKEUP0);
@@ -174,6 +197,12 @@ static void __init raumfeld_common_init(void)
 
 static void __init raumfeld_controller_init(void)
 {
+	struct platform_device *raumfeld_controller_devices[] = {
+		&rotary_encoder_device,
+	};
+
+	platform_add_devices(ARRAY_AND_SIZE(raumfeld_controller_devices));
+
 	raumfeld_common_init();
 }
 
@@ -185,6 +214,12 @@ static void __init raumfeld_connector_init(void)
 
 static void __init raumfeld_speaker_init(void)
 {
+	struct platform_device *raumfeld_speaker_devices[] = {
+		&rotary_encoder_device,
+	};
+
+	platform_add_devices(ARRAY_AND_SIZE(raumfeld_speaker_devices));
+
 	raumfeld_common_init();
 	raumfeld_eth_init();
 }
-- 
1.6.5.2