[s3c24xx] Add 2.6.31 patches

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@17665 3c298f89-4303-0410-b956-a3cf2f4a3e73

14 files changed, 579 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/bq27000_battery.h b/target/linux/s3c24xx/files-2.6.31/include/linux/bq27000_battery.h
new file mode 100644
index 000000000..a617466a5
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/bq27000_battery.h
@@ -0,0 +1,16 @@
+#ifndef __BQ27000_BATTERY_H__
+#define __BQ27000_BATTERY_H__
+
+void bq27000_charging_state_change(struct platform_device *pdev);
+
+struct bq27000_platform_data {
+	const char 	*name;
+	int		rsense_mohms;
+	int (*hdq_read)(int);
+	int (*hdq_write)(int, u8);
+	int (*hdq_initialized)(void);
+	int (*get_charger_online_status)(void);
+	int (*get_charger_active_status)(void);
+};
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/glamofb.h b/target/linux/s3c24xx/files-2.6.31/include/linux/glamofb.h
new file mode 100644
index 000000000..5f9fab5a4
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/glamofb.h
@@ -0,0 +1,35 @@
+#ifndef _LINUX_GLAMOFB_H
+#define _LINUX_GLAMOFB_H
+
+#include <linux/fb.h>
+
+#ifdef __KERNEL__
+
+struct glamo_core;
+struct glamofb_handle;
+
+struct glamo_fb_platform_data {
+    int width, height;
+
+    int num_modes;
+    struct fb_videomode *modes;
+
+    struct glamo_core *core;
+};
+
+int glamofb_cmd_mode(struct glamofb_handle *gfb, int on);
+int glamofb_cmd_write(struct glamofb_handle *gfb, u_int16_t val);
+
+#ifdef CONFIG_MFD_GLAMO
+void glamo_lcm_reset(struct platform_device *pdev, int level);
+#else
+#define glamo_lcm_reset(...) do {} while (0)
+#endif
+
+#endif
+
+#define GLAMOFB_ENGINE_ENABLE _IOW('F', 0x1, __u32)
+#define GLAMOFB_ENGINE_DISABLE _IOW('F', 0x2, __u32)
+#define GLAMOFB_ENGINE_RESET _IOW('F', 0x3, __u32)
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/gta02-vibrator.h b/target/linux/s3c24xx/files-2.6.31/include/linux/gta02-vibrator.h
new file mode 100644
index 000000000..9c24aac31
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/gta02-vibrator.h
@@ -0,0 +1,5 @@
+struct gta02_vib_platform_data {
+	int (* enable_fiq)(void);
+	void (*disable_fiq)(void);
+	void (*kick_fiq)(void);
+};
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/gta02_hdq.h b/target/linux/s3c24xx/files-2.6.31/include/linux/gta02_hdq.h
new file mode 100644
index 000000000..ae0c70e24
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/gta02_hdq.h
@@ -0,0 +1,18 @@
+#ifndef __GTA02HDQ_H__
+#define __GTA02HDQ_H__
+
+/* platform data */
+
+struct gta02_hdq_platform_data {
+	/*
+	 * give an opportunity to use us as parent for
+	 * devices that depend on us
+	 */
+	void (*attach_child_devices)(struct device *parent_device);
+};
+
+int gta02hdq_read(int address);
+int gta02hdq_write(int address, u8 data);
+int gta02hdq_initialized(void);
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/hdq.h b/target/linux/s3c24xx/files-2.6.31/include/linux/hdq.h
new file mode 100644
index 000000000..377ab387e
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/hdq.h
@@ -0,0 +1,32 @@
+#ifndef __LINUX_HDQ_H__
+#define __LINUX_HDQ_H__
+
+#include <linux/device.h>
+
+#define HDQ_SAMPLE_PERIOD_US	10
+
+/* platform data */
+
+struct hdq_platform_data {
+	/*
+	 * give an opportunity to use us as parent for
+	 * devices that depend on us
+	 */
+	void (*attach_child_devices)(struct device *parent_device);
+	
+	void (*gpio_dir_out)(void);
+	void (*gpio_dir_in)(void);
+	void (*gpio_set)(int);
+	int (*gpio_get)(void);
+
+	int (*enable_fiq)(void);
+	void (*disable_fiq)(void);
+	void (*kick_fiq)(void);
+
+};
+
+int hdq_read(int address);
+int hdq_write(int address, u8 data);
+int hdq_initialized(void);
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/jbt6k74.h b/target/linux/s3c24xx/files-2.6.31/include/linux/jbt6k74.h
new file mode 100644
index 000000000..b0ae90546
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/jbt6k74.h
@@ -0,0 +1,12 @@
+#ifndef __JBT6K74_H__
+#define __JBT6K74_H__
+
+#include <linux/spi/spi.h>
+
+struct jbt6k74_platform_data {
+	void (*reset)(int devindex, int level);
+	void (*probe_completed)(struct device *dev);
+	void (*enable_pixel_clock)(struct device *dev, int enable);
+};
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/lis302dl.h b/target/linux/s3c24xx/files-2.6.31/include/linux/lis302dl.h
new file mode 100644
index 000000000..a43b60807
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/lis302dl.h
@@ -0,0 +1,151 @@
+#ifndef _LINUX_LIS302DL_H
+#define _LINUX_LIS302DL_H
+
+#include <linux/types.h>
+#include <linux/spi/spi.h>
+#include <linux/input.h>
+#include <linux/workqueue.h>
+
+struct lis302dl_info;
+
+struct lis302dl_platform_data {
+	char *name;
+	unsigned long pin_chip_select;
+	unsigned long pin_clk;
+	unsigned long pin_mosi;
+	unsigned long pin_miso;
+	int open_drain;
+	int interrupt;
+	void (*lis302dl_suspend_io)(struct lis302dl_info *, int resuming);
+};
+
+struct lis302dl_info {
+	struct lis302dl_platform_data *pdata;
+	struct device *dev;
+	struct input_dev *input_dev;
+	unsigned int flags;
+	unsigned int threshold;
+	unsigned int duration;
+	uint32_t overruns;
+	struct {
+		unsigned int threshold; /* mg */
+		unsigned int duration;  /* ms */
+	} wakeup;
+
+	struct spi_device *spi;
+	uint8_t regs[0x40];
+};
+
+enum lis302dl_reg {
+	LIS302DL_REG_WHO_AM_I		= 0x0f,
+	LIS302DL_REG_CTRL1		= 0x20,
+	LIS302DL_REG_CTRL2		= 0x21,
+	LIS302DL_REG_CTRL3		= 0x22,
+	LIS302DL_REG_HP_FILTER_RESET	= 0x23,
+	LIS302DL_REG_STATUS		= 0x27,
+	LIS302DL_REG_OUT_X		= 0x29,
+	LIS302DL_REG_OUT_Y		= 0x2b,
+	LIS302DL_REG_OUT_Z		= 0x2d,
+	LIS302DL_REG_FF_WU_CFG_1	= 0x30,
+	LIS302DL_REG_FF_WU_SRC_1	= 0x31,
+	LIS302DL_REG_FF_WU_THS_1	= 0x32,
+	LIS302DL_REG_FF_WU_DURATION_1	= 0x33,
+	LIS302DL_REG_FF_WU_CFG_2	= 0x34,
+	LIS302DL_REG_FF_WU_SRC_2	= 0x35,
+	LIS302DL_REG_FF_WU_THS_2	= 0x36,
+	LIS302DL_REG_FF_WU_DURATION_2	= 0x37,
+	LIS302DL_REG_CLICK_CFG		= 0x38,
+	LIS302DL_REG_CLICK_SRC		= 0x39,
+	LIS302DL_REG_CLICK_THSY_X	= 0x3b,
+	LIS302DL_REG_CLICK_THSZ		= 0x3c,
+	LIS302DL_REG_CLICK_TIME_LIMIT	= 0x3d,
+	LIS302DL_REG_CLICK_LATENCY	= 0x3e,
+	LIS302DL_REG_CLICK_WINDOW	= 0x3f,
+};
+
+enum lis302dl_reg_ctrl1 {
+	LIS302DL_CTRL1_Xen		= 0x01,
+	LIS302DL_CTRL1_Yen		= 0x02,
+	LIS302DL_CTRL1_Zen		= 0x04,
+	LIS302DL_CTRL1_STM		= 0x08,
+	LIS302DL_CTRL1_STP		= 0x10,
+	LIS302DL_CTRL1_FS		= 0x20,
+	LIS302DL_CTRL1_PD		= 0x40,
+	LIS302DL_CTRL1_DR		= 0x80,
+};
+
+enum lis302dl_reg_ctrl2 {
+	LIS302DL_CTRL2_HPC1		= 0x01,
+	LIS302DL_CTRL2_HPC2		= 0x02,
+	LIS302DL_CTRL2_HPFF1		= 0x04,
+	LIS302DL_CTRL2_HPFF2		= 0x08,
+	LIS302DL_CTRL2_FDS		= 0x10,
+	LIS302DL_CTRL2_BOOT		= 0x40,
+	LIS302DL_CTRL2_SIM		= 0x80,
+};
+enum lis302dl_reg_ctrl3 {
+	LIS302DL_CTRL3_PP_OD		= 0x40,
+	LIS302DL_CTRL3_IHL		= 0x80,
+};
+
+enum lis302dl_reg_status {
+	LIS302DL_STATUS_XDA		= 0x01,
+	LIS302DL_STATUS_YDA		= 0x02,
+	LIS302DL_STATUS_ZDA		= 0x04,
+	LIS302DL_STATUS_XYZDA		= 0x08,
+	LIS302DL_STATUS_XOR		= 0x10,
+	LIS302DL_STATUS_YOR		= 0x20,
+	LIS302DL_STATUS_ZOR		= 0x40,
+	LIS302DL_STATUS_XYZOR		= 0x80,
+};
+
+/* Wakeup/freefall interrupt defs */
+enum lis302dl_reg_ffwucfg {
+	LIS302DL_FFWUCFG_XLIE		= 0x01,
+	LIS302DL_FFWUCFG_XHIE		= 0x02,
+	LIS302DL_FFWUCFG_YLIE		= 0x04,
+	LIS302DL_FFWUCFG_YHIE		= 0x08,
+	LIS302DL_FFWUCFG_ZLIE		= 0x10,
+	LIS302DL_FFWUCFG_ZHIE		= 0x20,
+	LIS302DL_FFWUCFG_LIR		= 0x40,
+	LIS302DL_FFWUCFG_AOI		= 0x80,
+};
+
+enum lis302dl_reg_ffwuths {
+	LIS302DL_FFWUTHS_DCRM		= 0x80,
+};
+
+enum lis302dl_reg_ffwusrc {
+	LIS302DL_FFWUSRC_XL		= 0x01,
+	LIS302DL_FFWUSRC_XH		= 0x02,
+	LIS302DL_FFWUSRC_YL		= 0x04,
+	LIS302DL_FFWUSRC_YH		= 0x08,
+	LIS302DL_FFWUSRC_ZL		= 0x10,
+	LIS302DL_FFWUSRC_ZH		= 0x20,
+	LIS302DL_FFWUSRC_IA		= 0x40,
+};
+
+enum lis302dl_reg_cloik_src {
+	LIS302DL_CLICKSRC_SINGLE_X	= 0x01,
+	LIS302DL_CLICKSRC_DOUBLE_X	= 0x02,
+	LIS302DL_CLICKSRC_SINGLE_Y	= 0x04,
+	LIS302DL_CLICKSRC_DOUBLE_Y	= 0x08,
+	LIS302DL_CLICKSRC_SINGLE_Z	= 0x10,
+	LIS302DL_CLICKSRC_DOUBLE_Z	= 0x20,
+	LIS302DL_CLICKSRC_IA		= 0x40,
+};
+
+#define LIS302DL_WHO_AM_I_MAGIC		0x3b
+
+#define LIS302DL_F_WUP_FF_1		0x0001	/* wake up from free fall */
+#define LIS302DL_F_WUP_FF_2		0x0002
+#define LIS302DL_F_WUP_FF		0x0003
+#define LIS302DL_F_WUP_CLICK	0x0004
+#define LIS302DL_F_POWER		0x0010
+#define LIS302DL_F_FS			0x0020 	/* ADC full scale */
+#define LIS302DL_F_INPUT_OPEN 	0x0040  /* Set if input device is opened */
+#define LIS302DL_F_IRQ_WAKE 	0x0080  /* IRQ is setup in wake mode */
+#define LIS302DL_F_DR			0x0100 	/* Data rate, 400Hz/100Hz */
+
+#endif /* _LINUX_LIS302DL_H */
+
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/mfd/glamo.h b/target/linux/s3c24xx/files-2.6.31/include/linux/mfd/glamo.h
new file mode 100644
index 000000000..35b3805cd
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/mfd/glamo.h
@@ -0,0 +1,51 @@
+#ifndef __GLAMO_MFD_H
+#define __GLAMO_MFD_H
+
+struct glamo_core;
+struct glamo_spigpio_platform_data;
+struct glamo_fb_platform_data;
+
+struct glamo_mmc_platform_data {
+	int	(*glamo_mmc_use_slow)(void);
+
+    struct glamo_core *core;
+};
+
+struct glamo_platform_data {
+    struct glamo_fb_platform_data      *fb_data;
+    struct glamo_spigpio_platform_data *spigpio_data;
+    struct glamo_mmc_platform_data     *mmc_data;
+    int gpio_base;
+
+    unsigned int osci_clock_rate;
+
+    int (*glamo_irq_is_wired)(void);
+    void (*glamo_external_reset)(int);
+    void (*registered)(struct device *dev);
+};
+
+enum glamo_engine {
+	GLAMO_ENGINE_CAPTURE = 0,
+	GLAMO_ENGINE_ISP = 1,
+	GLAMO_ENGINE_JPEG = 2,
+	GLAMO_ENGINE_MPEG_ENC = 3,
+	GLAMO_ENGINE_MPEG_DEC = 4,
+	GLAMO_ENGINE_LCD = 5,
+	GLAMO_ENGINE_CMDQ = 6,
+	GLAMO_ENGINE_2D = 7,
+	GLAMO_ENGINE_3D = 8,
+	GLAMO_ENGINE_MMC = 9,
+	GLAMO_ENGINE_MICROP0 = 10,
+	GLAMO_ENGINE_RISC = 11,
+	GLAMO_ENGINE_MICROP1_MPEG_ENC = 12,
+	GLAMO_ENGINE_MICROP1_MPEG_DEC = 13,
+#if 0
+	GLAMO_ENGINE_H264_DEC = 14,
+	GLAMO_ENGINE_RISC1 = 15,
+	GLAMO_ENGINE_SPI = 16,
+#endif
+	__NUM_GLAMO_ENGINES
+};
+
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter.h
new file mode 100644
index 000000000..aac1e028d
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter.h
@@ -0,0 +1,74 @@
+#ifndef __TS_FILTER_H__
+#define __TS_FILTER_H__
+
+/*
+ * Touchscreen filter.
+ *
+ * (c) 2008,2009 Andy Green <andy@openmoko.com>
+ */
+
+#include <linux/platform_device.h>
+
+#define MAX_TS_FILTER_COORDS		3  /* X, Y and Z (pressure). */
+
+struct ts_filter;
+struct ts_filter_configuration;
+
+/* Operations that a filter can perform. */
+
+struct ts_filter_api {
+	/* Create the filter - mandatory. */
+	struct ts_filter * (*create)(
+		struct platform_device *pdev,
+		const struct ts_filter_configuration *config,
+		int count_coords);
+	/* Destroy the filter - mandatory. */
+	void (*destroy)(struct ts_filter *filter);
+	/* Clear the filter - optional. */
+	void (*clear)(struct ts_filter *filter);
+
+
+	/*
+	 * The next three API functions only make sense if all of them are
+	 * set for a filter. If a filter has the next three methods then
+	 * it can propagate coordinates in the chain.
+	 */
+
+	/*
+	 * Process the filter.
+	 * It returns non-zero if the filter reaches an error.
+	 */
+	int (*process)(struct ts_filter *filter, int *coords);
+	/*
+	 * Is the filter ready to return a point?
+	 * Please do not code side effects in this function.
+	 */
+	int (*haspoint)(struct ts_filter *filter);
+	/*
+	 * Get a point.
+	 * Do not call unless the filter actually has a point to deliver.
+	 */
+	void (*getpoint)(struct ts_filter *filter, int *coords);
+
+	/*
+	 * Scale the points - optional.
+	 * A filter could only scale coordinates.
+	 */
+	void (*scale)(struct ts_filter *filter, int *coords);
+};
+
+/*
+ * Generic filter configuration. Actual configurations have this structure
+ * as a member.
+ */
+struct ts_filter_configuration {
+};
+
+struct ts_filter {
+	/* Operations for this filter. */
+	const struct ts_filter_api *api;
+	/* Number of coordinates to process. */
+	int count_coords;
+};
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_chain.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_chain.h
new file mode 100644
index 000000000..806bffe6c
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_chain.h
@@ -0,0 +1,58 @@
+#ifndef __TS_FILTER_CHAIN_H__
+#define __TS_FILTER_CHAIN_H__
+
+/*
+ * Touchscreen filter chains.
+ *
+ * (c) 2008,2009 Andy Green <andy@openmoko.com>
+ */
+
+#include "ts_filter.h"
+
+#include <linux/err.h>
+
+struct ts_filter_chain_configuration {
+	/* API to use. */
+	const struct ts_filter_api *api;
+	/* Generic filter configuration. Different for each filter. */
+	const struct ts_filter_configuration *config;
+};
+
+struct ts_filter_chain;
+
+#ifdef CONFIG_TOUCHSCREEN_FILTER
+
+/*
+ * Create a filter chain. It will allocate an array of
+ * null-terminated pointers to filters. On error it will return
+ * an error you can check with IS_ERR.
+ */
+extern struct ts_filter_chain *ts_filter_chain_create(
+	struct platform_device *pdev,
+	const struct ts_filter_chain_configuration conf[],
+	int count_coords);
+
+/* Destroy the chain. */
+extern void ts_filter_chain_destroy(struct ts_filter_chain *c);
+
+/* Clear the filter chain. */
+extern void ts_filter_chain_clear(struct ts_filter_chain *c);
+
+/*
+ * Try to get one point. Returns 0 if no points are available.
+ * coords will be used as temporal space, thus you supply a point
+ * using coords but you shouldn't rely on its value on return unless
+ * it returns a nonzero value that is not -1.
+ * If one of the filters find an error then this function will
+ * return -1.
+ */
+int ts_filter_chain_feed(struct ts_filter_chain *c, int *coords);
+
+#else /* !CONFIG_TOUCHSCREEN_FILTER */
+#define ts_filter_chain_create(pdev, config, count_coords) (NULL)
+#define ts_filter_chain_destroy(c) do { } while (0)
+#define ts_filter_chain_clear(c) do { } while (0)
+#define ts_filter_chain_feed(c, coords) (1)
+#endif
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_group.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_group.h
new file mode 100644
index 000000000..d1e3590e9
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_group.h
@@ -0,0 +1,36 @@
+#ifndef __TS_FILTER_GROUP_H__
+#define __TS_FILTER_GROUP_H__
+
+#include "ts_filter.h"
+
+/*
+ * Touchscreen group filter.
+ *
+ * Copyright (C) 2008,2009 by Openmoko, Inc.
+ * Author: Nelson Castillo <arhuaco@freaks-unidos.net>
+ *
+ */
+
+struct ts_filter_group_configuration {
+	/* Size of the filter. */
+	int length;
+	/*
+	 * If two points are separated by this distance or less they
+	 * are considered to be members of the same group.
+	 */
+	int close_enough;
+	/* Minimum allowed size for the biggest group in the sample set. */
+	int threshold;
+	/*
+	 * Number of times we try to get a group of points with at least
+	 * threshold points.
+	 */
+	int attempts;
+
+	/* Generic filter configuration. */
+	struct ts_filter_configuration config;
+};
+
+extern const struct ts_filter_api ts_filter_group_api;
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_linear.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_linear.h
new file mode 100644
index 000000000..82df3d25b
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_linear.h
@@ -0,0 +1,31 @@
+#ifndef __TS_FILTER_LINEAR_H__
+#define __TS_FILTER_LINEAR_H__
+
+#include "ts_filter.h"
+#include <linux/kobject.h>
+
+/*
+ * Touchscreen linear filter.
+ *
+ * Copyright (C) 2008,2009 by Openmoko, Inc.
+ * Author: Nelson Castillo <arhuaco@freaks-unidos.net>
+ *
+ */
+
+#define TS_FILTER_LINEAR_NCONSTANTS 7
+
+struct ts_filter_linear_configuration {
+	/* Calibration constants. */
+	int constants[TS_FILTER_LINEAR_NCONSTANTS];
+	/* First coordinate. */
+	int coord0;
+	/* Second coordinate. */
+	int coord1;
+
+	/* Generic filter configuration. */
+	struct ts_filter_configuration config;
+};
+
+extern const struct ts_filter_api ts_filter_linear_api;
+
+#endif
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_mean.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_mean.h
new file mode 100644
index 000000000..f5b5e4bbe
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_mean.h
@@ -0,0 +1,28 @@
+#ifndef __TS_FILTER_MEAN_H__
+#define __TS_FILTER_MEAN_H__
+
+#include "ts_filter.h"
+
+/*
+ * Touchscreen filter.
+ *
+ * mean
+ *
+ * (c) 2008,2009
+ *     Andy Green <andy@openmoko.com>
+ *     Nelson Castillo <arhuaco@freaks-unidos.net>
+ */
+
+/* Configuration for this filter. */
+struct ts_filter_mean_configuration {
+	/* Number of points for the mean. */
+	int length;
+
+	/* Generic filter configuration. */
+	struct ts_filter_configuration config;
+};
+
+/* API functions for the mean filter */
+extern const struct ts_filter_api ts_filter_mean_api;
+
+#endif /* __TS_FILTER_MEAN_H__ */
diff --git a/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_median.h b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_median.h
new file mode 100644
index 000000000..1c19472e3
--- /dev/null
+++ b/target/linux/s3c24xx/files-2.6.31/include/linux/touchscreen/ts_filter_median.h
@@ -0,0 +1,32 @@
+#ifndef __TS_FILTER_MEDIAN_H__
+#define __TS_FILTER_MEDIAN_H__
+
+#include "ts_filter.h"
+
+/*
+ * Touchscreen filter.
+ *
+ * median
+ *
+ * (c) 2008 Andy Green <andy@openmoko.com>
+ */
+
+struct ts_filter_median_configuration {
+	/* Size of the filter. */
+	int extent;
+	/* Precomputed midpoint. */
+	int midpoint;
+	/* A reference value for us to check if we are going fast or slow. */
+	int decimation_threshold;
+	/* How many points to replace if we're going fast. */
+	int decimation_above;
+	/* How many points to replace if we're going slow. */
+	int decimation_below;
+
+	/* Generic configuration. */
+	struct ts_filter_configuration config;
+};
+
+extern const struct ts_filter_api ts_filter_median_api;
+
+#endif