176 lines
5.2 KiB
C
176 lines
5.2 KiB
C
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/*
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* Touch driver for Nintendo Switch's STM FingerTip S (4CD60D) touch controller
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*
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* Copyright (c) 2018 langerhans
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* Copyright (c) 2018-2020 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __TOUCH_H_
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#define __TOUCH_H_
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#include <utils/types.h>
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#define STMFTS_I2C_ADDR 0x49
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/* I2C commands */
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#define STMFTS_READ_INFO 0x80
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#define STMFTS_READ_STATUS 0x84
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#define STMFTS_READ_ONE_EVENT 0x85
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#define STMFTS_READ_ALL_EVENT 0x86
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#define STMFTS_LATEST_EVENT 0x87
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#define STMFTS_SLEEP_IN 0x90
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#define STMFTS_SLEEP_OUT 0x91
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#define STMFTS_MS_MT_SENSE_OFF 0x92
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#define STMFTS_MS_MT_SENSE_ON 0x93
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#define STMFTS_SS_HOVER_SENSE_OFF 0x94
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#define STMFTS_SS_HOVER_SENSE_ON 0x95
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#define STMFTS_LP_TIMER_CALIB 0x97
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#define STMFTS_MS_KEY_SENSE_OFF 0x9A
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#define STMFTS_MS_KEY_SENSE_ON 0x9B
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#define STMFTS_SYSTEM_RESET 0xA0
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#define STMFTS_CLEAR_EVENT_STACK 0xA1
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#define STMFTS_FULL_FORCE_CALIBRATION 0xA2
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#define STMFTS_MS_CX_TUNING 0xA3
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#define STMFTS_SS_CX_TUNING 0xA4
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#define STMFTS_ITO_CHECK 0xA7
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#define STMFTS_RELEASEINFO 0xAA
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#define STMFTS_WRITE_REG 0xB6
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#define STMFTS_SWITCH_SENSE_MODE 0xC3
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#define STMFTS_NOISE_WRITE 0xC7
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#define STMFTS_NOISE_READ 0xC8
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#define STMFTS_RW_FRAMEBUFFER_REG 0xD0
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#define STMFTS_SAVE_CX_TUNING 0xFC
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#define STMFTS_DETECTION_CONFIG 0xB0
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#define STMFTS_REQU_COMP_DATA 0xB8
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#define STMFTS_VENDOR 0xCF
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#define STMFTS_FLASH_UNLOCK 0xF7
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#define STMFTS_FLASH_WRITE_64K 0xF8
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#define STMFTS_FLASH_STATUS 0xF9
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#define STMFTS_FLASH_OP 0xFA
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#define STMFTS_UNK5 0x62
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/* cmd parameters */
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#define STMFTS_VENDOR_GPIO_STATE 0x01
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#define STMFTS_VENDOR_SENSE_MODE 0x02
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#define STMFTS_STYLUS_MODE 0x00
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#define STMFTS_FINGER_MODE 0x01
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#define STMFTS_HOVER_MODE 0x02
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/* events */
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#define STMFTS_EV_NO_EVENT 0x00
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#define STMFTS_EV_MULTI_TOUCH_DETECTED 0x02
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#define STMFTS_EV_MULTI_TOUCH_ENTER 0x03
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#define STMFTS_EV_MULTI_TOUCH_LEAVE 0x04
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#define STMFTS_EV_MULTI_TOUCH_MOTION 0x05
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#define STMFTS_EV_HOVER_ENTER 0x07
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#define STMFTS_EV_HOVER_LEAVE 0x08
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#define STMFTS_EV_HOVER_MOTION 0x09
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#define STMFTS_EV_KEY_STATUS 0x0e
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#define STMFTS_EV_ERROR 0x0f
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#define STMFTS_EV_NOISE_READ 0x17
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#define STMFTS_EV_NOISE_WRITE 0x18
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#define STMFTS_EV_VENDOR 0x20
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#define STMFTS_EV_CONTROLLER_READY 0x10
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#define STMFTS_EV_STATUS 0x16
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#define STMFTS_EV_DEBUG 0xDB
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#define STMFTS_EV_STATUS_MS_CX_TUNING_DONE 1
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#define STMFTS_EV_STATUS_SS_CX_TUNING_DONE 2
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#define STMFTS_EV_STATUS_WRITE_CX_TUNE_DONE 4
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/* multi touch related event masks */
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#define STMFTS_MASK_EVENT_ID 0x0F
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#define STMFTS_MASK_TOUCH_ID 0xF0
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#define STMFTS_MASK_LEFT_EVENT 0x0F
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#define STMFTS_MASK_X_MSB 0x0F
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#define STMFTS_MASK_Y_LSB 0xF0
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/* key related event masks */
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#define STMFTS_MASK_KEY_NO_TOUCH 0x00
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#define STMFTS_MASK_KEY_MENU 0x01
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#define STMFTS_MASK_KEY_BACK 0x02
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#define STMFTS_EVENT_SIZE 8
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#define STMFTS_STACK_DEPTH 32
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#define STMFTS_DATA_MAX_SIZE (STMFTS_EVENT_SIZE * STMFTS_STACK_DEPTH)
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#define STMFTS_MAX_FINGERS 10
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typedef enum _touch_ito_error {
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ITO_NO_ERROR = 0,
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ITO_FORCE_OPEN,
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ITO_SENSE_OPEN,
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ITO_FORCE_SHRT_GND,
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ITO_SENSE_SHRT_GND,
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ITO_FORCE_SHRT_VCM,
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ITO_SENSE_SHRT_VCM,
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ITO_FORCE_SHRT_FORCE,
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ITO_SENSE_SHRT_SENSE,
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ITO_F2E_SENSE,
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ITO_FPC_FORCE_OPEN,
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ITO_FPC_SENSE_OPEN,
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ITO_KEY_FORCE_OPEN,
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ITO_KEY_SENSE_OPEN,
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ITO_RESERVED0,
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ITO_RESERVED1,
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ITO_RESERVED2,
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ITO_MAX_ERR_REACHED = 0xFF
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} touch_ito_error;
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typedef struct _touch_event {
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u8 raw[8];
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u16 type; // Event type.
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u16 x; // Horizontal coordinates.
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u16 y; // Vertical coordinates.
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u32 z;
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u8 fingers;
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bool touch;
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} touch_event;
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typedef struct _touch_panel_info_t
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{
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u8 idx;
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u8 gpio0;
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u8 gpio1;
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u8 gpio2;
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char *vendor;
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} touch_panel_info_t;
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typedef struct _touch_info {
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u16 chip_id;
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u16 fw_ver;
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u16 config_id;
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u16 config_ver;
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} touch_info;
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typedef struct _touch_fw_info_t {
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u32 fw_id;
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u16 ftb_ver;
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u16 fw_rev;
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} touch_fw_info_t;
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void touch_poll(touch_event *event);
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touch_event touch_poll_wait();
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touch_panel_info_t *touch_get_panel_vendor();
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int touch_get_fw_info(touch_fw_info_t *fw);
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touch_info touch_get_info();
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int touch_panel_ito_test(u8 *err);
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int touch_execute_autotune();
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int touch_sense_enable();
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int touch_power_on();
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void touch_power_off();
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#endif /* __TOUCH_H_ */
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