--- /dev/null
+/*
+ * 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
Code Review / kvmfornfv.git / blobdiff