bu21013: Driver for new dual touch controllers support

Adding bu21013 dual touch controllers driver and
support for it in mach-ux500.

ST-Ericsson ID: WP 257134

Signed-off-by: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/413
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Tested-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Change-Id: If084c45539cd18982ddf210cf2b80be2e8da4dd3
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/2390

1 files changed, 284 insertions, 0 deletions

diff --git a/include/linux/bu21013.h b/include/linux/bu21013.h
new file mode 100755
index 00000000000..1dcc841ff3f
--- /dev/null
+++ b/include/linux/bu21013.h
@@ -0,0 +1,284 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2009
+ * Author: Naveen Kumar G <naveen.gaddipati@stericsson.com> for ST-Ericsson
+ * License terms:GNU General Public License (GPL) version 2
+ */
+
+#ifndef _BU21013_H
+#define _BU21013_H
+
+/*
+ * Touch screen register offsets
+ */
+#define BU21013_SENSORS_BTN_0_7 0x70
+#define BU21013_SENSORS_BTN_8_15 0x71
+#define BU21013_SENSORS_BTN_16_23 0x72
+#define BU21013_X1_POS_MSB 0x73
+#define BU21013_X1_POS_LSB 0x74
+#define BU21013_Y1_POS_MSB 0x75
+#define BU21013_Y1_POS_LSB 0x76
+#define BU21013_X2_POS_MSB 0x77
+#define BU21013_X2_POS_LSB 0x78
+#define BU21013_Y2_POS_MSB 0x79
+#define BU21013_Y2_POS_LSB 0x7A
+#define BU21013_INT_CLR 0xE8
+#define BU21013_INT_MODE 0xE9
+#define BU21013_GAIN 0xEA
+#define BU21013_OFFSET_MODE 0xEB
+#define BU21013_XY_EDGE 0xEC
+#define BU21013_RESET 0xED
+#define BU21013_CALIB 0xEE
+#define BU21013_REG_DONE 0xEF
+#define BU21013_SENSOR_0_7 0xF0
+#define BU21013_SENSOR_8_15 0xF1
+#define BU21013_SENSOR_16_23 0xF2
+#define BU21013_POS_MODE1 0xF3
+#define BU21013_POS_MODE2 0xF4
+#define BU21013_CLK_MODE 0xF5
+#define BU21013_IDLE 0xFA
+#define BU21013_FILTER 0xFB
+#define BU21013_TH_ON 0xFC
+#define BU21013_TH_OFF 0xFD
+
+/*
+ * Touch screen register offset values
+ */
+#define BU21013_INTR_CLEAR 0x01
+#define BU21013_INTR_ENABLE 0x00
+#define BU21013_CALIB_ENABLE 0x01
+
+#define BU21013_RESET_ENABLE 0x01
+
+/* Sensors Configuration */
+#define BU21013_SENSORS_EN_0_7 0x3F
+#define BU21013_SENSORS_EN_8_15 0xFC
+#define BU21013_SENSORS_EN_16_23 0x1F
+
+/* Position mode1 */
+#define BU21013_POS_MODE1_0 0x02
+#define BU21013_POS_MODE1_1 0x04
+#define BU21013_POS_MODE1_2 0x08
+
+/* Position mode2 */
+#define BU21013_POS_MODE2_ZERO 0x01
+#define BU21013_POS_MODE2_AVG1 0x02
+#define BU21013_POS_MODE2_AVG2 0x04
+#define BU21013_POS_MODE2_EN_XY 0x08
+#define BU21013_POS_MODE2_EN_RAW 0x10
+#define BU21013_POS_MODE2_MULTI 0x80
+
+/* Clock mode */
+#define BU21013_CLK_MODE_DIV 0x01
+#define BU21013_CLK_MODE_EXT 0x02
+#define BU21013_CLK_MODE_CALIB 0x80
+
+/* IDLE time */
+#define BU21013_IDLET_0 0x01
+#define BU21013_IDLET_1 0x02
+#define BU21013_IDLET_2 0x04
+#define BU21013_IDLET_3 0x08
+#define BU21013_IDLE_INTERMIT_EN 0x10
+
+/* FILTER reg values */
+#define BU21013_DELTA_0_6 0x7F
+#define BU21013_FILTER_EN 0x80
+
+/* interrupt mode */
+#define BU21013_INT_MODE_LEVEL 0x00
+#define BU21013_INT_MODE_EDGE 0x01
+
+/* Gain reg values */
+#define BU21013_GAIN_0 0x01
+#define BU21013_GAIN_1 0x02
+#define BU21013_GAIN_2 0x04
+
+/* OFFSET mode */
+#define BU21013_OFFSET_MODE_DEFAULT 0x00
+#define BU21013_OFFSET_MODE_MOVE 0x01
+#define BU21013_OFFSET_MODE_DISABLE 0x02
+
+/* Threshold ON values */
+#define BU21013_TH_ON_0 0x01
+#define BU21013_TH_ON_1 0x02
+#define BU21013_TH_ON_2 0x04
+#define BU21013_TH_ON_3 0x08
+#define BU21013_TH_ON_4 0x10
+#define BU21013_TH_ON_5 0x20
+#define BU21013_TH_ON_6 0x40
+#define BU21013_TH_ON_7 0x80
+
+#define BU21013_TH_ON_MAX 0xFF
+
+/* Threshold OFF values */
+#define BU21013_TH_OFF_0 0x01
+#define BU21013_TH_OFF_1 0x02
+#define BU21013_TH_OFF_2 0x04
+#define BU21013_TH_OFF_3 0x08
+#define BU21013_TH_OFF_4 0x10
+#define BU21013_TH_OFF_5 0x20
+#define BU21013_TH_OFF_6 0x40
+#define BU21013_TH_OFF_7 0x80
+
+#define BU21013_TH_OFF_MAX 0xFF
+
+/* FILTER reg values */
+#define BU21013_X_EDGE_0 0x01
+#define BU21013_X_EDGE_1 0x02
+#define BU21013_X_EDGE_2 0x04
+#define BU21013_X_EDGE_3 0x08
+#define BU21013_Y_EDGE_0 0x10
+#define BU21013_Y_EDGE_1 0x20
+#define BU21013_Y_EDGE_2 0x40
+#define BU21013_Y_EDGE_3 0x80
+
+#define BU21013_DONE 0x01
+
+/**
+ * struct bu21013_platform_device - Handle the platform data
+ * @cs_en:	pointer to the cs enable function
+ * @cs_dis:	pointer to the cs disable function
+ * @irq_init:    pointer to the irq init function
+ * @irq_exit: pointer to the irq exit function
+ * @pirq_en: pointer to the pen irq en function
+ * @pirq_dis:	pointer to the pen irq disable function
+ * @pirq_read_val:    pointer to read the pen irq value function
+ * @board_check: pointer to the get the board version
+ * @x_max_res: xmax resolution
+ * @y_max_res: ymax resolution
+ * @touch_x_max: touch x max
+ * @touch_y_max: touch y max
+ * @tp_cntl: controller id
+ * @cs_pin: chip select pin
+ * @irq: irq pin
+ * @ext_clk_en: external clock flag
+ * @portrait: portrait mode flag
+ * @edge_mode: edge mode flag
+ * This is used to handle the platform data
+ **/
+struct bu21013_platform_device {
+	int (*cs_en)(int reset_pin);
+	int (*cs_dis)(int reset_pin);
+	int (*irq_init)(void (*callback)(void *parameter), void *p);
+	int (*irq_exit)(void);
+	int (*pirq_en) (void);
+	int (*pirq_dis)(void);
+	int (*pirq_read_val)(void);
+	bool (*board_check)(void);
+	int x_max_res;
+	int y_max_res;
+	int touch_x_max;
+	int touch_y_max;
+	int tp_cntl;
+	unsigned int cs_pin;
+	unsigned int irq;
+	bool portrait;
+	bool ext_clk;
+	bool edge_mode;
+};
+
+/**
+ * struct bu21013_touch_point - x and y co-ordinates of touch panel
+ * @x: x co-ordinate
+ * @y: y co-ordinate
+ * This is used to hold the x and y co-ordinates of touch panel
+ **/
+struct bu21013_touch_point {
+	signed short x;
+	signed short y;
+};
+
+/**
+ * struct bu21013_gesture_info - hold the gesture of the touch
+ * @gesture_kind: gesture kind variable
+ * @pt: arry to touch_point structure
+ * @dir: direction variable
+ * @times: touch times
+ * @speed: speed of the touch
+ * This is used to hold the gesture of the touch.
+ **/
+struct bu21013_gesture_info {
+	signed short gesture_kind;
+	struct bu21013_touch_point pt[2];
+	signed short dir;
+	signed short times;
+	signed short speed;
+};
+
+/**
+ * struct bu21013_ts_data - touch panel data structure
+ * @client:	pointer to the i2c client
+ * @chip:	pointer to the touch panel controller
+ * @pin_dev:    pointer to the input device structure
+ * @penirq_timer: variable to the timer list structure
+ * @touch_en: variable for reporting the co-ordinates to input device.
+ * @finger1_pressed:      variable to indicate the first co-ordinates.
+ * @finger2_pressed:      variable to indicate the first co-ordinates.
+ * @tp_timer_handler:    variable to work structure for timer
+ * @tp_gpio_handler:    variable to work structure for gpio interrupt
+ * @gesture_info: variable to bu21013_gesture_info structure
+ * @touch_count:  variable to maintain sensors input count
+ * @touchflag: variable to indicate the touch
+ * @pre_tap_flag: flag to indicate the pre tap
+ * @flick_flag: flickering flag
+ * @touch_continue: to continue the touch flag
+ * @pre_tap_flag_level: pre tap level flag
+ * @x1: x1 value
+ * @y1: y1 vlaue
+ * @x2: x2 value
+ * @y2: y2 value
+ * @pinch_start: pinch start
+ * @tap_start_point: variable to bu21013_touch_point structure
+ * @dir_trace: array for data trace
+ * @dir_idx: id for direction
+ * @rotate_data: array to maintain the rotate data
+ * @board_flag: variable to indicate the href v1 board
+ * @finger2_count: count for finger2 touches
+ * @intr_pin: interrupt pin value
+ * @last_press: sensor button pressed
+ * @prev_press_report: last reported flag
+ * @touchp_kobj: variable to kernel object for touch panel
+ * @gain: gain value
+ * @th_on: threshold on value
+ * @th_off: threshold off value
+ * @penup_timer: timeout value
+ *
+ * Tocuh panel data structure
+ */
+struct bu21013_ts_data {
+	struct i2c_client *client;
+	struct bu21013_platform_device *chip;
+	struct input_dev *pin_dev;
+	struct timer_list penirq_timer;
+	bool touch_en;
+	bool finger1_pressed;
+	bool finger2_pressed;
+	struct work_struct tp_timer_handler;
+	struct work_struct tp_gpio_handler;
+	struct bu21013_gesture_info gesture_info;
+	signed long touch_count;
+	bool touchflag;
+	bool pre_tap_flag;
+	bool flick_flag;
+	bool touch_continue;
+	unsigned char pre_tap_flag_level;
+	unsigned char pinch_start;
+	struct bu21013_touch_point tap_start_point;
+	unsigned char dir_trace[38];
+	unsigned char dir_idx;
+	unsigned char rotate_data[5][5];
+	bool board_flag;
+	u8 finger2_count;
+	unsigned int intr_pin;
+	signed short	x1;
+	signed short	y1;
+	signed short	x2;
+	signed short	y2;
+	int last_press;
+	bool prev_press_report;
+	struct kobject touchp_kobj;
+	int gain;
+	int th_on;
+	int th_off;
+	int penup_timer;
+};
+#endif