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/****************************************************************************
* drivers/input/mxt.h
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __DRIVERS_INPUT_MXT_H
#define __DRIVERS_INPUT_MXT_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* Support T6 only if debug is enabled */
#undef MXT_SUPPORT_T6
#if !defined(CONFIG_DEBUG)
# undef CONFIG_DEBUG_VERBOSE
# undef CONFIG_DEBUG_INPUT
#endif
#if defined(CONFIG_DEBUG_VERBOSE) && defined(CONFIG_DEBUG_INPUT)
# define MXT_SUPPORT_T6 1
#endif
/* MXT Register Definitions *************************************************/
#define MXT_INFO 0x00 /* 7-bit info block */
# define MXT_FAMILY_ID 0x00 /* MXT family ID */
# define MXT_VARIANT_ID 0x01 /* MXT variant ID */
# define MXT_VERSION 0x02 /* MXT version number */
# define MXT_BUILD 0x03 /* MXT build number */
# define MXT_MATRIX_X_SIZE 0x04 /* Matrix X size */
# define MXT_MATRIX_Y_SIZE 0x05 /* Matrix Y size */
# define MXT_OBJECT_NUM 0x06 /* Number of objects */
#define MXT_OBJECT_START 0x07
/* Object types */
#define MXT_GEN_MESSAGE_T5 5
#define MXT_GEN_COMMAND_T6 6
#define MXT_GEN_POWER_T7 7
#define MXT_GEN_ACQUIRE_T8 8
#define MXT_TOUCH_MULTI_T9 9
#define MXT_TOUCH_KEYARRAY_T15 15
#define MXT_SPT_COMMSCONFIG_T18 18
#define MXT_SPT_GPIOPWM_T19 19
#define MXT_PROCI_GRIPFACE_T20 20
#define MXT_PROCG_NOISE_T22 22
#define MXT_TOUCH_PROXIMITY_T23 23
#define MXT_PROCI_ONETOUCH_T24 24
#define MXT_SPT_SELFTEST_T25 25
#define MXT_PROCI_TWOTOUCH_T27 27
#define MXT_SPT_CTECONFIG_T28 28
#define MXT_DEBUG_DIAGNOSTIC_T37 37
#define MXT_SPT_USERDATA_T38 38
#define MXT_PROCI_GRIP_T40 40
#define MXT_PROCI_PALM_T41 41
#define MXT_PROCI_TOUCHSUPPRESSION_T42 42
#define MXT_SPT_DIGITIZER_T43 43
#define MXT_SPT_MESSAGECOUNT_T44 44
#define MXT_SPT_CTECONFIG_T46 46
#define MXT_PROCI_STYLUS_T47 47
#define MXT_PROCG_NOISESUPPRESSION_T48 48
#define MXT_TOUCH_PROXKEY_T52 52
#define MXT_GEN_DATASOURCE_T53 53
/* MXT_GEN_COMMAND_T6 field */
#define MXT_COMMAND_RESET 0
#define MXT_COMMAND_BACKUPNV 1
#define MXT_COMMAND_CALIBRATE 2
#define MXT_COMMAND_REPORTALL 3
#define MXT_COMMAND_DIAGNOSTIC 5
/* MXT_GEN_POWER_T7 field */
#define MXT_POWER_IDLEACQINT 0
#define MXT_POWER_ACTVACQINT 1
#define MXT_POWER_ACTV2IDLETO 2
/* MXT_GEN_ACQUIRE_T8 field */
#define MXT_ACQUIRE_CHRGTIME 0
#define MXT_ACQUIRE_TCHDRIFT 2
#define MXT_ACQUIRE_DRIFTST 3
#define MXT_ACQUIRE_TCHAUTOCAL 4
#define MXT_ACQUIRE_SYNC 5
#define MXT_ACQUIRE_ATCHCALST 6
#define MXT_ACQUIRE_ATCHCALSTHR 7
/* MXT_TOUCH_MULTI_T9 field */
#define MXT_TOUCH_CTRL 0
#define MXT_TOUCH_XORIGIN 1
#define MXT_TOUCH_YORIGIN 2
#define MXT_TOUCH_XSIZE 3
#define MXT_TOUCH_YSIZE 4
#define MXT_TOUCH_BLEN 6
#define MXT_TOUCH_TCHTHR 7
#define MXT_TOUCH_TCHDI 8
#define MXT_TOUCH_ORIENT 9
#define MXT_TOUCH_MOVHYSTI 11
#define MXT_TOUCH_MOVHYSTN 12
#define MXT_TOUCH_NUMTOUCH 14
#define MXT_TOUCH_MRGHYST 15
#define MXT_TOUCH_MRGTHR 16
#define MXT_TOUCH_AMPHYST 17
#define MXT_TOUCH_XRANGE_LSB 18
#define MXT_TOUCH_XRANGE_MSB 19
#define MXT_TOUCH_YRANGE_LSB 20
#define MXT_TOUCH_YRANGE_MSB 21
#define MXT_TOUCH_XLOCLIP 22
#define MXT_TOUCH_XHICLIP 23
#define MXT_TOUCH_YLOCLIP 24
#define MXT_TOUCH_YHICLIP 25
#define MXT_TOUCH_XEDGECTRL 26
#define MXT_TOUCH_XEDGEDIST 27
#define MXT_TOUCH_YEDGECTRL 28
#define MXT_TOUCH_YEDGEDIST 29
#define MXT_TOUCH_JUMPLIMIT 30
/* MXT_PROCI_GRIPFACE_T20 field */
#define MXT_GRIPFACE_CTRL 0
#define MXT_GRIPFACE_XLOGRIP 1
#define MXT_GRIPFACE_XHIGRIP 2
#define MXT_GRIPFACE_YLOGRIP 3
#define MXT_GRIPFACE_YHIGRIP 4
#define MXT_GRIPFACE_MAXTCHS 5
#define MXT_GRIPFACE_SZTHR1 7
#define MXT_GRIPFACE_SZTHR2 8
#define MXT_GRIPFACE_SHPTHR1 9
#define MXT_GRIPFACE_SHPTHR2 10
#define MXT_GRIPFACE_SUPEXTTO 11
/* MXT_PROCI_NOISE field */
#define MXT_NOISE_CTRL 0
#define MXT_NOISE_OUTFLEN 1
#define MXT_NOISE_GCAFUL_LSB 3
#define MXT_NOISE_GCAFUL_MSB 4
#define MXT_NOISE_GCAFLL_LSB 5
#define MXT_NOISE_GCAFLL_MSB 6
#define MXT_NOISE_ACTVGCAFVALID 7
#define MXT_NOISE_NOISETHR 8
#define MXT_NOISE_FREQHOPSCALE 10
#define MXT_NOISE_FREQ0 11
#define MXT_NOISE_FREQ1 12
#define MXT_NOISE_FREQ2 13
#define MXT_NOISE_FREQ3 14
#define MXT_NOISE_FREQ4 15
#define MXT_NOISE_IDLEGCAFVALID 16
/* MXT_SPT_COMMSCONFIG_T18 */
#define MXT_COMMS_CTRL 0
#define MXT_COMMS_CMD 1
/* MXT_SPT_CTECONFIG_T28 field */
#define MXT_CTE_CTRL 0
#define MXT_CTE_CMD 1
#define MXT_CTE_MODE 2
#define MXT_CTE_IDLEGCAFDEPTH 3
#define MXT_CTE_ACTVGCAFDEPTH 4
#define MXT_CTE_VOLTAGE 5
#define MXT_VOLTAGE_DEFAULT 2700000
#define MXT_VOLTAGE_STEP 10000
/* Definitions for MXT_GEN_COMMAND_T6 */
#define MXT_BOOT_VALUE 0xa5
#define MXT_BACKUP_VALUE 0x55
#define MXT_BACKUP_TIME 50000 /* microseconds */
#define MXT_RESET_TIME 500000 /* microseconds */
/* MXT_SPT_GPIOPWM_T19 field */
#define MXT_MAX_BUTTONS 4 /* Up to four buttons */
#define MXT_GPIO0_MASK 0x04
#define MXT_GPIO1_MASK 0x08
#define MXT_GPIO2_MASK 0x10
#define MXT_GPIO3_MASK 0x20
/* Command to unlock bootloader */
#define MXT_UNLOCK_CMD_MSB 0xaa
#define MXT_UNLOCK_CMD_LSB 0xdc
/* Bootloader mode status */
#define MXT_WAITING_BOOTLOAD_CMD 0xc0 /* Valid 7 6 bit only */
#define MXT_WAITING_FRAME_DATA 0x80 /* Valid 7 6 bit only */
#define MXT_FRAME_CRC_CHECK 0x02
#define MXT_FRAME_CRC_FAIL 0x03
#define MXT_FRAME_CRC_PASS 0x04
#define MXT_APP_CRC_FAIL 0x40 /* Valid 7 8 bit only */
#define MXT_BOOT_STATUS_MASK 0x3f
/* Touch status */
#define MXT_UNGRIP (1 << 0)
#define MXT_SUPPRESS (1 << 1)
#define MXT_AMP (1 << 2)
#define MXT_VECTOR (1 << 3)
#define MXT_MOVE (1 << 4)
#define MXT_RELEASE (1 << 5)
#define MXT_PRESS (1 << 6)
#define MXT_DETECT (1 << 7)
/* Touchscreen absolute values */
#define MXT_MAX_AREA 0xff
#define MXT_PIXELS_PER_MM 20
/****************************************************************************
* Public Types
****************************************************************************/
/* This structure describes one maXTouch object */
struct mxt_object_s
{
uint8_t type; /* Object type */
uint8_t addr[2]; /* Start address */
uint8_t size; /* Size of each instance - 1 */
uint8_t ninstances; /* Number of instances - 1 */
uint8_t nids; /* Number of report IDs */
};
#define MXT_OBJECT_SIZE 6
/* This structure describes one maXTouch message */
struct mxt_msg_s
{
uint8_t id; /* Report ID */
uint8_t body[7]; /* Message body */
};
/****************************************************************************
* Public Data
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __DRIVERS_INPUT_MXT_H */
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