#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/workqueue.h>
#include <linux/input.h>
#include <linux/input/bu21013.h>
#include <linux/slab.h>
#include <linux/regulator/consumer.h>
#include <linux/module.h>

Data Structures
struct	bu21013_ts_data

Macros
#define	PEN_DOWN_INTR 0

#define	MAX_FINGERS 2

#define	RESET_DELAY 30

#define	PENUP_TIMEOUT (10)

#define	DELTA_MIN 16

#define	MASK_BITS 0x03

#define	SHIFT_8 8

#define	SHIFT_2 2

#define	LENGTH_OF_BUFFER 11

#define	I2C_RETRY_COUNT 5

#define	BU21013_SENSORS_BTN_0_7_REG 0x70

#define	BU21013_SENSORS_BTN_8_15_REG 0x71

#define	BU21013_SENSORS_BTN_16_23_REG 0x72

#define	BU21013_X1_POS_MSB_REG 0x73

#define	BU21013_X1_POS_LSB_REG 0x74

#define	BU21013_Y1_POS_MSB_REG 0x75

#define	BU21013_Y1_POS_LSB_REG 0x76

#define	BU21013_X2_POS_MSB_REG 0x77

#define	BU21013_X2_POS_LSB_REG 0x78

#define	BU21013_Y2_POS_MSB_REG 0x79

#define	BU21013_Y2_POS_LSB_REG 0x7A

#define	BU21013_INT_CLR_REG 0xE8

#define	BU21013_INT_MODE_REG 0xE9

#define	BU21013_GAIN_REG 0xEA

#define	BU21013_OFFSET_MODE_REG 0xEB

#define	BU21013_XY_EDGE_REG 0xEC

#define	BU21013_RESET_REG 0xED

#define	BU21013_CALIB_REG 0xEE

#define	BU21013_DONE_REG 0xEF

#define	BU21013_SENSOR_0_7_REG 0xF0

#define	BU21013_SENSOR_8_15_REG 0xF1

#define	BU21013_SENSOR_16_23_REG 0xF2

#define	BU21013_POS_MODE1_REG 0xF3

#define	BU21013_POS_MODE2_REG 0xF4

#define	BU21013_CLK_MODE_REG 0xF5

#define	BU21013_IDLE_REG 0xFA

#define	BU21013_FILTER_REG 0xFB

#define	BU21013_TH_ON_REG 0xFC

#define	BU21013_TH_OFF_REG 0xFD

#define	BU21013_RESET_ENABLE 0x01

#define	BU21013_SENSORS_EN_0_7 0x3F

#define	BU21013_SENSORS_EN_8_15 0xFC

#define	BU21013_SENSORS_EN_16_23 0x1F

#define	BU21013_POS_MODE1_0 0x02

#define	BU21013_POS_MODE1_1 0x04

#define	BU21013_POS_MODE1_2 0x08

#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

#define	BU21013_CLK_MODE_DIV 0x01

#define	BU21013_CLK_MODE_EXT 0x02

#define	BU21013_CLK_MODE_CALIB 0x80

#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

#define	BU21013_DELTA_0_6 0x7F

#define	BU21013_FILTER_EN 0x80

#define	BU21013_INT_MODE_LEVEL 0x00

#define	BU21013_INT_MODE_EDGE 0x01

#define	BU21013_GAIN_0 0x01

#define	BU21013_GAIN_1 0x02

#define	BU21013_GAIN_2 0x04

#define	BU21013_OFFSET_MODE_DEFAULT 0x00

#define	BU21013_OFFSET_MODE_MOVE 0x01

#define	BU21013_OFFSET_MODE_DISABLE 0x02

#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

#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

#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

#define	BU21013_NUMBER_OF_X_SENSORS (6)

#define	BU21013_NUMBER_OF_Y_SENSORS (11)

#define	DRIVER_TP "bu21013_tp"

Functions
	MODULE_DEVICE_TABLE (i2c, bu21013_id)

	module_i2c_driver (bu21013_driver)

	MODULE_LICENSE ("GPL v2")

	MODULE_AUTHOR ("Naveen Kumar G <[email protected]>")

	MODULE_DESCRIPTION ("bu21013 touch screen controller driver")

Macro Definition Documentation

#define BU21013_CALIB_REG 0xEE

Definition at line 46 of file bu21013_ts.c.

#define BU21013_CLK_MODE_CALIB 0x80

Definition at line 79 of file bu21013_ts.c.

#define BU21013_CLK_MODE_DIV 0x01

Definition at line 77 of file bu21013_ts.c.

#define BU21013_CLK_MODE_EXT 0x02

Definition at line 78 of file bu21013_ts.c.

#define BU21013_CLK_MODE_REG 0xF5

Definition at line 53 of file bu21013_ts.c.

#define BU21013_DELTA_0_6 0x7F

Definition at line 87 of file bu21013_ts.c.

#define BU21013_DONE 0x01

Definition at line 130 of file bu21013_ts.c.

#define BU21013_DONE_REG 0xEF

Definition at line 47 of file bu21013_ts.c.

#define BU21013_FILTER_EN 0x80

Definition at line 88 of file bu21013_ts.c.

#define BU21013_FILTER_REG 0xFB

Definition at line 55 of file bu21013_ts.c.

#define BU21013_GAIN_0 0x01

Definition at line 93 of file bu21013_ts.c.

#define BU21013_GAIN_1 0x02

Definition at line 94 of file bu21013_ts.c.

#define BU21013_GAIN_2 0x04

Definition at line 95 of file bu21013_ts.c.

#define BU21013_GAIN_REG 0xEA

Definition at line 42 of file bu21013_ts.c.

#define BU21013_IDLE_INTERMIT_EN 0x10

Definition at line 85 of file bu21013_ts.c.

#define BU21013_IDLE_REG 0xFA

Definition at line 54 of file bu21013_ts.c.

#define BU21013_IDLET_0 0x01

Definition at line 81 of file bu21013_ts.c.

#define BU21013_IDLET_1 0x02

Definition at line 82 of file bu21013_ts.c.

#define BU21013_IDLET_2 0x04

Definition at line 83 of file bu21013_ts.c.

#define BU21013_IDLET_3 0x08

Definition at line 84 of file bu21013_ts.c.

#define BU21013_INT_CLR_REG 0xE8

Definition at line 40 of file bu21013_ts.c.

#define BU21013_INT_MODE_EDGE 0x01

Definition at line 91 of file bu21013_ts.c.

#define BU21013_INT_MODE_LEVEL 0x00

Definition at line 90 of file bu21013_ts.c.

#define BU21013_INT_MODE_REG 0xE9

Definition at line 41 of file bu21013_ts.c.

#define BU21013_NUMBER_OF_X_SENSORS (6)

Definition at line 131 of file bu21013_ts.c.

#define BU21013_NUMBER_OF_Y_SENSORS (11)

Definition at line 132 of file bu21013_ts.c.

#define BU21013_OFFSET_MODE_DEFAULT 0x00

Definition at line 97 of file bu21013_ts.c.

#define BU21013_OFFSET_MODE_DISABLE 0x02

Definition at line 99 of file bu21013_ts.c.

#define BU21013_OFFSET_MODE_MOVE 0x01

Definition at line 98 of file bu21013_ts.c.

#define BU21013_OFFSET_MODE_REG 0xEB

Definition at line 43 of file bu21013_ts.c.

#define BU21013_POS_MODE1_0 0x02

Definition at line 66 of file bu21013_ts.c.

#define BU21013_POS_MODE1_1 0x04

Definition at line 67 of file bu21013_ts.c.

#define BU21013_POS_MODE1_2 0x08

Definition at line 68 of file bu21013_ts.c.

#define BU21013_POS_MODE1_REG 0xF3

Definition at line 51 of file bu21013_ts.c.

#define BU21013_POS_MODE2_AVG1 0x02

Definition at line 71 of file bu21013_ts.c.

#define BU21013_POS_MODE2_AVG2 0x04

Definition at line 72 of file bu21013_ts.c.

#define BU21013_POS_MODE2_EN_RAW 0x10

Definition at line 74 of file bu21013_ts.c.

#define BU21013_POS_MODE2_EN_XY 0x08

Definition at line 73 of file bu21013_ts.c.

#define BU21013_POS_MODE2_MULTI 0x80

Definition at line 75 of file bu21013_ts.c.

#define BU21013_POS_MODE2_REG 0xF4

Definition at line 52 of file bu21013_ts.c.

#define BU21013_POS_MODE2_ZERO 0x01

Definition at line 70 of file bu21013_ts.c.

#define BU21013_RESET_ENABLE 0x01

Definition at line 60 of file bu21013_ts.c.

#define BU21013_RESET_REG 0xED

Definition at line 45 of file bu21013_ts.c.

#define BU21013_SENSOR_0_7_REG 0xF0

Definition at line 48 of file bu21013_ts.c.

#define BU21013_SENSOR_16_23_REG 0xF2

Definition at line 50 of file bu21013_ts.c.

#define BU21013_SENSOR_8_15_REG 0xF1

Definition at line 49 of file bu21013_ts.c.

#define BU21013_SENSORS_BTN_0_7_REG 0x70

Definition at line 29 of file bu21013_ts.c.

#define BU21013_SENSORS_BTN_16_23_REG 0x72

Definition at line 31 of file bu21013_ts.c.

#define BU21013_SENSORS_BTN_8_15_REG 0x71

Definition at line 30 of file bu21013_ts.c.

#define BU21013_SENSORS_EN_0_7 0x3F

Definition at line 62 of file bu21013_ts.c.

#define BU21013_SENSORS_EN_16_23 0x1F

Definition at line 64 of file bu21013_ts.c.

#define BU21013_SENSORS_EN_8_15 0xFC

Definition at line 63 of file bu21013_ts.c.

#define BU21013_TH_OFF_0 0x01

Definition at line 111 of file bu21013_ts.c.

#define BU21013_TH_OFF_1 0x02

Definition at line 112 of file bu21013_ts.c.

#define BU21013_TH_OFF_2 0x04

Definition at line 113 of file bu21013_ts.c.

#define BU21013_TH_OFF_3 0x08

Definition at line 114 of file bu21013_ts.c.

#define BU21013_TH_OFF_4 0x10

Definition at line 115 of file bu21013_ts.c.

#define BU21013_TH_OFF_5 0x20

Definition at line 116 of file bu21013_ts.c.

#define BU21013_TH_OFF_6 0x40

Definition at line 117 of file bu21013_ts.c.

#define BU21013_TH_OFF_7 0x80

Definition at line 118 of file bu21013_ts.c.

#define BU21013_TH_OFF_MAX 0xFF

Definition at line 119 of file bu21013_ts.c.

#define BU21013_TH_OFF_REG 0xFD

Definition at line 57 of file bu21013_ts.c.

#define BU21013_TH_ON_0 0x01

Definition at line 101 of file bu21013_ts.c.

#define BU21013_TH_ON_1 0x02

Definition at line 102 of file bu21013_ts.c.

#define BU21013_TH_ON_2 0x04

Definition at line 103 of file bu21013_ts.c.

#define BU21013_TH_ON_3 0x08

Definition at line 104 of file bu21013_ts.c.

#define BU21013_TH_ON_4 0x10

Definition at line 105 of file bu21013_ts.c.

#define BU21013_TH_ON_5 0x20

Definition at line 106 of file bu21013_ts.c.

#define BU21013_TH_ON_6 0x40

Definition at line 107 of file bu21013_ts.c.

#define BU21013_TH_ON_7 0x80

Definition at line 108 of file bu21013_ts.c.

#define BU21013_TH_ON_MAX 0xFF

Definition at line 109 of file bu21013_ts.c.

#define BU21013_TH_ON_REG 0xFC

Definition at line 56 of file bu21013_ts.c.

#define BU21013_X1_POS_LSB_REG 0x74

Definition at line 33 of file bu21013_ts.c.

#define BU21013_X1_POS_MSB_REG 0x73

Definition at line 32 of file bu21013_ts.c.

#define BU21013_X2_POS_LSB_REG 0x78

Definition at line 37 of file bu21013_ts.c.

#define BU21013_X2_POS_MSB_REG 0x77

Definition at line 36 of file bu21013_ts.c.

#define BU21013_X_EDGE_0 0x01

Definition at line 121 of file bu21013_ts.c.

#define BU21013_X_EDGE_1 0x02

Definition at line 122 of file bu21013_ts.c.

#define BU21013_X_EDGE_2 0x04

Definition at line 123 of file bu21013_ts.c.

#define BU21013_X_EDGE_3 0x08

Definition at line 124 of file bu21013_ts.c.

#define BU21013_XY_EDGE_REG 0xEC

Definition at line 44 of file bu21013_ts.c.

#define BU21013_Y1_POS_LSB_REG 0x76

Definition at line 35 of file bu21013_ts.c.

#define BU21013_Y1_POS_MSB_REG 0x75

Definition at line 34 of file bu21013_ts.c.

#define BU21013_Y2_POS_LSB_REG 0x7A

Definition at line 39 of file bu21013_ts.c.

#define BU21013_Y2_POS_MSB_REG 0x79

Definition at line 38 of file bu21013_ts.c.

#define BU21013_Y_EDGE_0 0x10

Definition at line 125 of file bu21013_ts.c.

#define BU21013_Y_EDGE_1 0x20

Definition at line 126 of file bu21013_ts.c.

#define BU21013_Y_EDGE_2 0x40

Definition at line 127 of file bu21013_ts.c.

#define BU21013_Y_EDGE_3 0x80

Definition at line 128 of file bu21013_ts.c.

#define DELTA_MIN 16

Definition at line 22 of file bu21013_ts.c.

#define DRIVER_TP "bu21013_tp"

Definition at line 134 of file bu21013_ts.c.

#define I2C_RETRY_COUNT 5

Definition at line 27 of file bu21013_ts.c.

#define LENGTH_OF_BUFFER 11

Definition at line 26 of file bu21013_ts.c.

#define MASK_BITS 0x03

Definition at line 23 of file bu21013_ts.c.

#define MAX_FINGERS 2

Definition at line 19 of file bu21013_ts.c.

#define PEN_DOWN_INTR 0

Definition at line 18 of file bu21013_ts.c.

#define PENUP_TIMEOUT (10)

Definition at line 21 of file bu21013_ts.c.

#define RESET_DELAY 30

Definition at line 20 of file bu21013_ts.c.

#define SHIFT_2 2

Definition at line 25 of file bu21013_ts.c.

#define SHIFT_8 8

Definition at line 24 of file bu21013_ts.c.

Function Documentation

MODULE_AUTHOR ( "Naveen Kumar G <[email protected]>" )

MODULE_DESCRIPTION ( "bu21013 touch screen controller driver" )

MODULE_DEVICE_TABLE	(	i2c	,
		bu21013_id
	)

module_i2c_driver ( bu21013_driver )

MODULE_LICENSE ( "GPL v2" )

Data Structures

Macros

Functions

Macro Definition Documentation

Function Documentation