| /* |
| * Cypress APA trackpad with I2C interface |
| * |
| * Author: Dudley Du <dudl@cypress.com> |
| * |
| * Copyright (C) 2014 Cypress Semiconductor, Inc. |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file COPYING in the main directory of this archive for |
| * more details. |
| */ |
| |
| #ifndef _CYAPA_H |
| #define _CYAPA_H |
| |
| #include <linux/firmware.h> |
| |
| /* APA trackpad firmware generation number. */ |
| #define CYAPA_GEN_UNKNOWN 0x00 /* unknown protocol. */ |
| #define CYAPA_GEN3 0x03 /* support MT-protocol B with tracking ID. */ |
| #define CYAPA_GEN5 0x05 /* support TrueTouch GEN5 trackpad device. */ |
| |
| #define CYAPA_NAME "Cypress APA Trackpad (cyapa)" |
| |
| /* |
| * Macros for SMBus communication |
| */ |
| #define SMBUS_READ 0x01 |
| #define SMBUS_WRITE 0x00 |
| #define SMBUS_ENCODE_IDX(cmd, idx) ((cmd) | (((idx) & 0x03) << 1)) |
| #define SMBUS_ENCODE_RW(cmd, rw) ((cmd) | ((rw) & 0x01)) |
| #define SMBUS_BYTE_BLOCK_CMD_MASK 0x80 |
| #define SMBUS_GROUP_BLOCK_CMD_MASK 0x40 |
| |
| /* Commands for read/write registers of Cypress trackpad */ |
| #define CYAPA_CMD_SOFT_RESET 0x00 |
| #define CYAPA_CMD_POWER_MODE 0x01 |
| #define CYAPA_CMD_DEV_STATUS 0x02 |
| #define CYAPA_CMD_GROUP_DATA 0x03 |
| #define CYAPA_CMD_GROUP_CMD 0x04 |
| #define CYAPA_CMD_GROUP_QUERY 0x05 |
| #define CYAPA_CMD_BL_STATUS 0x06 |
| #define CYAPA_CMD_BL_HEAD 0x07 |
| #define CYAPA_CMD_BL_CMD 0x08 |
| #define CYAPA_CMD_BL_DATA 0x09 |
| #define CYAPA_CMD_BL_ALL 0x0a |
| #define CYAPA_CMD_BLK_PRODUCT_ID 0x0b |
| #define CYAPA_CMD_BLK_HEAD 0x0c |
| #define CYAPA_CMD_MAX_BASELINE 0x0d |
| #define CYAPA_CMD_MIN_BASELINE 0x0e |
| |
| #define BL_HEAD_OFFSET 0x00 |
| #define BL_DATA_OFFSET 0x10 |
| |
| #define BL_STATUS_SIZE 3 /* Length of gen3 bootloader status registers */ |
| #define CYAPA_REG_MAP_SIZE 256 |
| |
| /* |
| * Gen3 Operational Device Status Register |
| * |
| * bit 7: Valid interrupt source |
| * bit 6 - 4: Reserved |
| * bit 3 - 2: Power status |
| * bit 1 - 0: Device status |
| */ |
| #define REG_OP_STATUS 0x00 |
| #define OP_STATUS_SRC 0x80 |
| #define OP_STATUS_POWER 0x0c |
| #define OP_STATUS_DEV 0x03 |
| #define OP_STATUS_MASK (OP_STATUS_SRC | OP_STATUS_POWER | OP_STATUS_DEV) |
| |
| /* |
| * Operational Finger Count/Button Flags Register |
| * |
| * bit 7 - 4: Number of touched finger |
| * bit 3: Valid data |
| * bit 2: Middle Physical Button |
| * bit 1: Right Physical Button |
| * bit 0: Left physical Button |
| */ |
| #define REG_OP_DATA1 0x01 |
| #define OP_DATA_VALID 0x08 |
| #define OP_DATA_MIDDLE_BTN 0x04 |
| #define OP_DATA_RIGHT_BTN 0x02 |
| #define OP_DATA_LEFT_BTN 0x01 |
| #define OP_DATA_BTN_MASK (OP_DATA_MIDDLE_BTN | OP_DATA_RIGHT_BTN | \ |
| OP_DATA_LEFT_BTN) |
| |
| /* |
| * Write-only command file register used to issue commands and |
| * parameters to the bootloader. |
| * The default value read from it is always 0x00. |
| */ |
| #define REG_BL_FILE 0x00 |
| #define BL_FILE 0x00 |
| |
| /* |
| * Bootloader Status Register |
| * |
| * bit 7: Busy |
| * bit 6 - 5: Reserved |
| * bit 4: Bootloader running |
| * bit 3 - 2: Reserved |
| * bit 1: Watchdog Reset |
| * bit 0: Checksum valid |
| */ |
| #define REG_BL_STATUS 0x01 |
| #define BL_STATUS_REV_6_5 0x60 |
| #define BL_STATUS_BUSY 0x80 |
| #define BL_STATUS_RUNNING 0x10 |
| #define BL_STATUS_REV_3_2 0x0c |
| #define BL_STATUS_WATCHDOG 0x02 |
| #define BL_STATUS_CSUM_VALID 0x01 |
| #define BL_STATUS_REV_MASK (BL_STATUS_WATCHDOG | BL_STATUS_REV_3_2 | \ |
| BL_STATUS_REV_6_5) |
| |
| /* |
| * Bootloader Error Register |
| * |
| * bit 7: Invalid |
| * bit 6: Invalid security key |
| * bit 5: Bootloading |
| * bit 4: Command checksum |
| * bit 3: Flash protection error |
| * bit 2: Flash checksum error |
| * bit 1 - 0: Reserved |
| */ |
| #define REG_BL_ERROR 0x02 |
| #define BL_ERROR_INVALID 0x80 |
| #define BL_ERROR_INVALID_KEY 0x40 |
| #define BL_ERROR_BOOTLOADING 0x20 |
| #define BL_ERROR_CMD_CSUM 0x10 |
| #define BL_ERROR_FLASH_PROT 0x08 |
| #define BL_ERROR_FLASH_CSUM 0x04 |
| #define BL_ERROR_RESERVED 0x03 |
| #define BL_ERROR_NO_ERR_IDLE 0x00 |
| #define BL_ERROR_NO_ERR_ACTIVE (BL_ERROR_BOOTLOADING) |
| |
| #define CAPABILITY_BTN_SHIFT 3 |
| #define CAPABILITY_LEFT_BTN_MASK (0x01 << 3) |
| #define CAPABILITY_RIGHT_BTN_MASK (0x01 << 4) |
| #define CAPABILITY_MIDDLE_BTN_MASK (0x01 << 5) |
| #define CAPABILITY_BTN_MASK (CAPABILITY_LEFT_BTN_MASK | \ |
| CAPABILITY_RIGHT_BTN_MASK | \ |
| CAPABILITY_MIDDLE_BTN_MASK) |
| |
| #define PWR_MODE_MASK 0xfc |
| #define PWR_MODE_FULL_ACTIVE (0x3f << 2) |
| #define PWR_MODE_IDLE (0x03 << 2) /* Default rt suspend scanrate: 30ms */ |
| #define PWR_MODE_SLEEP (0x05 << 2) /* Default suspend scanrate: 50ms */ |
| #define PWR_MODE_BTN_ONLY (0x01 << 2) |
| #define PWR_MODE_OFF (0x00 << 2) |
| |
| #define PWR_STATUS_MASK 0x0c |
| #define PWR_STATUS_ACTIVE (0x03 << 2) |
| #define PWR_STATUS_IDLE (0x02 << 2) |
| #define PWR_STATUS_BTN_ONLY (0x01 << 2) |
| #define PWR_STATUS_OFF (0x00 << 2) |
| |
| #define AUTOSUSPEND_DELAY 2000 /* unit : ms */ |
| |
| #define UNINIT_SLEEP_TIME 0xFFFF |
| #define UNINIT_PWR_MODE 0xFF |
| |
| #define BTN_ONLY_MODE_NAME "buttononly" |
| #define OFF_MODE_NAME "off" |
| |
| /* The touch.id is used as the MT slot id, thus max MT slot is 15 */ |
| #define CYAPA_MAX_MT_SLOTS 15 |
| |
| struct cyapa; |
| |
| typedef bool (*cb_sort)(struct cyapa *, u8 *, int); |
| |
| struct cyapa_dev_ops { |
| int (*check_fw)(struct cyapa *, const struct firmware *); |
| int (*bl_enter)(struct cyapa *); |
| int (*bl_activate)(struct cyapa *); |
| int (*bl_initiate)(struct cyapa *, const struct firmware *); |
| int (*update_fw)(struct cyapa *, const struct firmware *); |
| int (*bl_deactivate)(struct cyapa *); |
| |
| ssize_t (*show_baseline)(struct device *, |
| struct device_attribute *, char *); |
| ssize_t (*calibrate_store)(struct device *, |
| struct device_attribute *, const char *, size_t); |
| |
| int (*initialize)(struct cyapa *cyapa); |
| |
| int (*state_parse)(struct cyapa *cyapa, u8 *reg_status, int len); |
| int (*operational_check)(struct cyapa *cyapa); |
| |
| int (*irq_handler)(struct cyapa *); |
| bool (*irq_cmd_handler)(struct cyapa *); |
| int (*sort_empty_output_data)(struct cyapa *, |
| u8 *, int *, cb_sort); |
| |
| int (*set_power_mode)(struct cyapa *, u8, u16); |
| }; |
| |
| struct cyapa_gen5_cmd_states { |
| struct mutex cmd_lock; |
| struct completion cmd_ready; |
| atomic_t cmd_issued; |
| u8 in_progress_cmd; |
| bool is_irq_mode; |
| |
| cb_sort resp_sort_func; |
| u8 *resp_data; |
| int *resp_len; |
| |
| u8 irq_cmd_buf[CYAPA_REG_MAP_SIZE]; |
| u8 empty_buf[CYAPA_REG_MAP_SIZE]; |
| }; |
| |
| union cyapa_cmd_states { |
| struct cyapa_gen5_cmd_states gen5; |
| }; |
| |
| enum cyapa_state { |
| CYAPA_STATE_NO_DEVICE, |
| CYAPA_STATE_BL_BUSY, |
| CYAPA_STATE_BL_IDLE, |
| CYAPA_STATE_BL_ACTIVE, |
| CYAPA_STATE_OP, |
| CYAPA_STATE_GEN5_BL, |
| CYAPA_STATE_GEN5_APP, |
| }; |
| |
| /* The main device structure */ |
| struct cyapa { |
| enum cyapa_state state; |
| u8 status[BL_STATUS_SIZE]; |
| bool operational; /* true: ready for data reporting; false: not. */ |
| |
| struct i2c_client *client; |
| struct input_dev *input; |
| char phys[32]; /* Device physical location */ |
| bool irq_wake; /* Irq wake is enabled */ |
| bool smbus; |
| |
| /* power mode settings */ |
| u8 suspend_power_mode; |
| u16 suspend_sleep_time; |
| u8 runtime_suspend_power_mode; |
| u16 runtime_suspend_sleep_time; |
| u8 dev_pwr_mode; |
| u16 dev_sleep_time; |
| |
| /* Read from query data region. */ |
| char product_id[16]; |
| u8 fw_maj_ver; /* Firmware major version. */ |
| u8 fw_min_ver; /* Firmware minor version. */ |
| u8 btn_capability; |
| u8 gen; |
| int max_abs_x; |
| int max_abs_y; |
| int physical_size_x; |
| int physical_size_y; |
| |
| /* Used in ttsp and truetouch based trackpad devices. */ |
| u8 x_origin; /* X Axis Origin: 0 = left side; 1 = rigth side. */ |
| u8 y_origin; /* Y Axis Origin: 0 = top; 1 = bottom. */ |
| int electrodes_x; /* Number of electrodes on the X Axis*/ |
| int electrodes_y; /* Number of electrodes on the Y Axis*/ |
| int electrodes_rx; /* Number of Rx electrodes */ |
| int aligned_electrodes_rx; /* 4 aligned */ |
| int max_z; |
| |
| /* |
| * Used to synchronize the access or update the device state. |
| * And since update firmware and read firmware image process will take |
| * quite long time, maybe more than 10 seconds, so use mutex_lock |
| * to sync and wait other interface and detecting are done or ready. |
| */ |
| struct mutex state_sync_lock; |
| |
| const struct cyapa_dev_ops *ops; |
| |
| union cyapa_cmd_states cmd_states; |
| }; |
| |
| |
| ssize_t cyapa_i2c_reg_read_block(struct cyapa *cyapa, u8 reg, size_t len, |
| u8 *values); |
| ssize_t cyapa_smbus_read_block(struct cyapa *cyapa, u8 cmd, size_t len, |
| u8 *values); |
| |
| ssize_t cyapa_read_block(struct cyapa *cyapa, u8 cmd_idx, u8 *values); |
| |
| int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout); |
| |
| u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time); |
| u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode); |
| |
| |
| extern const char product_id[]; |
| extern const struct cyapa_dev_ops cyapa_gen3_ops; |
| extern const struct cyapa_dev_ops cyapa_gen5_ops; |
| |
| #endif |
