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