AD714x is very flexible, it can be used as buttons, scrollwheel,
slider, touchpad at the same time. That depends on the boards.
The platform_data for the device's "struct device" holds these
information.
The data-struct defined in this file descript the hardware feature
of button/scrollwheel/slider/touchpad components on target boards,
which need be filled in the arch/mach-/.
Signed-off-by: Barry Song <21cnbao@xxxxxxxxx>
---
include/linux/spi/ad714x.h | 60 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 60 insertions(+), 0 deletions(-)
create mode 100644 include/linux/spi/ad714x.h
diff --git a/include/linux/spi/ad714x.h b/include/linux/spi/ad714x.h
new file mode 100644
index 0000000..f6439a9
--- /dev/null
+++ b/include/linux/spi/ad714x.h
@@ -0,0 +1,60 @@
+/*
+ * include/linux/ad714x.h
+ *
+ * AD714x is very flexible, it can be used as buttons, scrollwheel,
+ * slider, touchpad at the same time. That depends on the boards.
+ * The platform_data for the device's "struct device" holds this
+ * information.
+ */
+
+
+#ifndef AD714X_HW_H
+#define AD714X_HW_H
+
+#define STAGE_NUM 12
+#define STAGE_CFGREG_NUM 8
+#define SYS_CFGREG_NUM 8
+
+/* board information which need be initialized in arch/mach... */
+struct ad714x_slider_plat {
+ int start_stage;
+ int end_stage;
+ int max_coord;
+};
+
+struct ad714x_wheel_plat {
+ int start_stage;
+ int end_stage;
+ int max_coord;
+};
+
+struct ad714x_touchpad_plat {
+ int x_start_stage;
+ int x_end_stage;
+ int x_max_coord;
+
+ int y_start_stage;
+ int y_end_stage;
+ int y_max_coord;
+};
+
+struct ad714x_button_plat {
+ int keycode;
+ unsigned short l_mask;
+ unsigned short h_mask;
+};
+
+struct ad714x_platform_data {
+ int slider_num;
+ int wheel_num;
+ int touchpad_num;
+ int button_num;
+ struct ad714x_slider_plat *slider;
+ struct ad714x_wheel_plat *wheel;
+ struct ad714x_touchpad_plat *touchpad;
+ struct ad714x_button_plat *button;
+ unsigned short stage_cfg_reg[STAGE_NUM][STAGE_CFGREG_NUM];
+ unsigned short sys_cfg_reg[SYS_CFGREG_NUM];
+};
+
+#endif
--
1.5.6.3
--
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