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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __GOODIX_H__
#define __GOODIX_H__
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/input/touchscreen.h>
#include <linux/regulator/consumer.h>
/* Register defines */
#define GOODIX_REG_MISCTL_DSP_CTL 0x4010
#define GOODIX_REG_MISCTL_SRAM_BANK 0x4048
#define GOODIX_REG_MISCTL_MEM_CD_EN 0x4049
#define GOODIX_REG_MISCTL_CACHE_EN 0x404B
#define GOODIX_REG_MISCTL_TMR0_EN 0x40B0
#define GOODIX_REG_MISCTL_SWRST 0x4180
#define GOODIX_REG_MISCTL_CPU_SWRST_PULSE 0x4184
#define GOODIX_REG_MISCTL_BOOTCTL 0x4190
#define GOODIX_REG_MISCTL_BOOT_OPT 0x4218
#define GOODIX_REG_MISCTL_BOOT_CTL 0x5094
#define GOODIX_REG_FW_SIG 0x8000
#define GOODIX_FW_SIG_LEN 10
#define GOODIX_REG_MAIN_CLK 0x8020
#define GOODIX_MAIN_CLK_LEN 6
#define GOODIX_REG_COMMAND 0x8040
#define GOODIX_CMD_SCREEN_OFF 0x05
#define GOODIX_REG_SW_WDT 0x8041
#define GOODIX_REG_REQUEST 0x8043
#define GOODIX_RQST_RESPONDED 0x00
#define GOODIX_RQST_CONFIG 0x01
#define GOODIX_RQST_BAK_REF 0x02
#define GOODIX_RQST_RESET 0x03
#define GOODIX_RQST_MAIN_CLOCK 0x04
/*
* Unknown request which gets send by the controller aprox.
* every 34 seconds once it is up and running.
*/
#define GOODIX_RQST_UNKNOWN 0x06
#define GOODIX_RQST_IDLE 0xFF
#define GOODIX_REG_STATUS 0x8044
#define GOODIX_GT1X_REG_CONFIG_DATA 0x8050
#define GOODIX_GT9X_REG_CONFIG_DATA 0x8047
#define GOODIX_REG_ID 0x8140
#define GOODIX_READ_COOR_ADDR 0x814E
#define GOODIX_REG_BAK_REF 0x99D0
#define GOODIX_ID_MAX_LEN 4
#define GOODIX_CONFIG_MAX_LENGTH 240
#define GOODIX_MAX_KEYS 7
enum goodix_irq_pin_access_method {
IRQ_PIN_ACCESS_NONE,
IRQ_PIN_ACCESS_GPIO,
IRQ_PIN_ACCESS_ACPI_GPIO,
IRQ_PIN_ACCESS_ACPI_METHOD,
};
struct goodix_ts_data;
struct goodix_chip_data {
u16 config_addr;
int config_len;
int (*check_config)(struct goodix_ts_data *ts, const u8 *cfg, int len);
void (*calc_config_checksum)(struct goodix_ts_data *ts);
};
struct goodix_ts_data {
struct i2c_client *client;
struct input_dev *input_dev;
struct input_dev *input_pen;
const struct goodix_chip_data *chip;
const char *firmware_name;
struct touchscreen_properties prop;
unsigned int max_touch_num;
unsigned int int_trigger_type;
struct regulator *avdd28;
struct regulator *vddio;
struct gpio_desc *gpiod_int;
struct gpio_desc *gpiod_rst;
int gpio_count;
int gpio_int_idx;
enum gpiod_flags gpiod_rst_flags;
char id[GOODIX_ID_MAX_LEN + 1];
char cfg_name[64];
u16 version;
bool reset_controller_at_probe;
bool load_cfg_from_disk;
int pen_input_registered;
struct completion firmware_loading_complete;
unsigned long irq_flags;
enum goodix_irq_pin_access_method irq_pin_access_method;
unsigned int contact_size;
u8 config[GOODIX_CONFIG_MAX_LENGTH];
unsigned short keymap[GOODIX_MAX_KEYS];
u8 main_clk[GOODIX_MAIN_CLK_LEN];
int bak_ref_len;
u8 *bak_ref;
};
int goodix_i2c_read(struct i2c_client *client, u16 reg, u8 *buf, int len);
int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, int len);
int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value);
int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len);
int goodix_int_sync(struct goodix_ts_data *ts);
int goodix_reset_no_int_sync(struct goodix_ts_data *ts);
int goodix_firmware_check(struct goodix_ts_data *ts);
bool goodix_handle_fw_request(struct goodix_ts_data *ts);
void goodix_save_bak_ref(struct goodix_ts_data *ts);
#endif
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