^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for Goodix Touchscreens
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2014 Red Hat Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2015 K. Merker <merker@debian.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This code is based on gt9xx.c authored by andrew@goodix.com:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 2010 - 2012 Goodix Technology.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/firmware.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/gpio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/input/mt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/input/touchscreen.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define GOODIX_GPIO_INT_NAME "irq"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define GOODIX_GPIO_RST_NAME "reset"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define GOODIX_MAX_HEIGHT 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define GOODIX_MAX_WIDTH 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define GOODIX_INT_TRIGGER 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define GOODIX_CONTACT_SIZE 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define GOODIX_MAX_CONTACT_SIZE 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define GOODIX_MAX_CONTACTS 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define GOODIX_MAX_KEYS 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define GOODIX_CONFIG_MIN_LENGTH 186
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define GOODIX_CONFIG_911_LENGTH 186
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define GOODIX_CONFIG_967_LENGTH 228
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define GOODIX_CONFIG_GT9X_LENGTH 240
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define GOODIX_CONFIG_MAX_LENGTH 240
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* Register defines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define GOODIX_REG_COMMAND 0x8040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define GOODIX_CMD_SCREEN_OFF 0x05
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define GOODIX_READ_COOR_ADDR 0x814E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define GOODIX_GT1X_REG_CONFIG_DATA 0x8050
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define GOODIX_GT9X_REG_CONFIG_DATA 0x8047
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define GOODIX_REG_ID 0x8140
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define GOODIX_BUFFER_STATUS_READY BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define GOODIX_HAVE_KEY BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define GOODIX_BUFFER_STATUS_TIMEOUT 20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define RESOLUTION_LOC 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define MAX_CONTACTS_LOC 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define TRIGGER_LOC 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* Our special handling for GPIO accesses through ACPI is x86 specific */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #if defined CONFIG_X86 && defined CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define ACPI_GPIO_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct goodix_ts_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) enum goodix_irq_pin_access_method {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) IRQ_PIN_ACCESS_NONE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) IRQ_PIN_ACCESS_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) IRQ_PIN_ACCESS_ACPI_GPIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) IRQ_PIN_ACCESS_ACPI_METHOD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct goodix_chip_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) u16 config_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int config_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) int (*check_config)(struct goodix_ts_data *ts, const u8 *cfg, int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) void (*calc_config_checksum)(struct goodix_ts_data *ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct goodix_chip_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) const char *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) const struct goodix_chip_data *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define GOODIX_ID_MAX_LEN 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct goodix_ts_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct i2c_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct input_dev *input_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) const struct goodix_chip_data *chip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct touchscreen_properties prop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned int max_touch_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned int int_trigger_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct regulator *avdd28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct regulator *vddio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct gpio_desc *gpiod_int;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct gpio_desc *gpiod_rst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) int gpio_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int gpio_int_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) char id[GOODIX_ID_MAX_LEN + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u16 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) const char *cfg_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) bool reset_controller_at_probe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) bool load_cfg_from_disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct completion firmware_loading_complete;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) unsigned long irq_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) enum goodix_irq_pin_access_method irq_pin_access_method;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) unsigned int contact_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) u8 config[GOODIX_CONFIG_MAX_LENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) unsigned short keymap[GOODIX_MAX_KEYS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static int goodix_check_cfg_8(struct goodix_ts_data *ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) const u8 *cfg, int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int goodix_check_cfg_16(struct goodix_ts_data *ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) const u8 *cfg, int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static const struct goodix_chip_data gt1x_chip_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .config_addr = GOODIX_GT1X_REG_CONFIG_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .config_len = GOODIX_CONFIG_GT9X_LENGTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) .check_config = goodix_check_cfg_16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .calc_config_checksum = goodix_calc_cfg_checksum_16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static const struct goodix_chip_data gt911_chip_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .config_len = GOODIX_CONFIG_911_LENGTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .check_config = goodix_check_cfg_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .calc_config_checksum = goodix_calc_cfg_checksum_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static const struct goodix_chip_data gt967_chip_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .config_len = GOODIX_CONFIG_967_LENGTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .check_config = goodix_check_cfg_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .calc_config_checksum = goodix_calc_cfg_checksum_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static const struct goodix_chip_data gt9x_chip_data = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .config_len = GOODIX_CONFIG_GT9X_LENGTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .check_config = goodix_check_cfg_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .calc_config_checksum = goodix_calc_cfg_checksum_8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static const struct goodix_chip_id goodix_chip_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) { .id = "1151", .data = >1x_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) { .id = "5663", .data = >1x_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) { .id = "5688", .data = >1x_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) { .id = "917S", .data = >1x_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) { .id = "9286", .data = >1x_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) { .id = "911", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) { .id = "9271", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) { .id = "9110", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) { .id = "9111", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) { .id = "927", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) { .id = "928", .data = >911_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) { .id = "912", .data = >967_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) { .id = "9147", .data = >967_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) { .id = "967", .data = >967_chip_data },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static const unsigned long goodix_irq_flags[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) IRQ_TYPE_EDGE_RISING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) IRQ_TYPE_EDGE_FALLING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) IRQ_TYPE_LEVEL_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) IRQ_TYPE_LEVEL_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static const struct dmi_system_id nine_bytes_report[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #if defined(CONFIG_DMI) && defined(CONFIG_X86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) .ident = "Lenovo YogaBook",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) /* YB1-X91L/F and YB1-X90L/F */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * Those tablets have their x coordinate inverted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) static const struct dmi_system_id inverted_x_screen[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #if defined(CONFIG_DMI) && defined(CONFIG_X86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) .ident = "Cube I15-TC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) .matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) DMI_MATCH(DMI_SYS_VENDOR, "Cube"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * goodix_i2c_read - read data from a register of the i2c slave device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * @client: i2c device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * @reg: the register to read from.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * @buf: raw write data buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * @len: length of the buffer to write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int goodix_i2c_read(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) u16 reg, u8 *buf, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct i2c_msg msgs[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) __be16 wbuf = cpu_to_be16(reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) msgs[0].flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) msgs[0].addr = client->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) msgs[0].len = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) msgs[0].buf = (u8 *)&wbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) msgs[1].flags = I2C_M_RD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) msgs[1].addr = client->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) msgs[1].len = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) msgs[1].buf = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ret = i2c_transfer(client->adapter, msgs, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return ret < 0 ? ret : (ret != ARRAY_SIZE(msgs) ? -EIO : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * goodix_i2c_write - write data to a register of the i2c slave device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * @client: i2c device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * @reg: the register to write to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * @buf: raw data buffer to write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * @len: length of the buffer to write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) unsigned len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u8 *addr_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct i2c_msg msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) addr_buf = kmalloc(len + 2, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (!addr_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) addr_buf[0] = reg >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) addr_buf[1] = reg & 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) memcpy(&addr_buf[2], buf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) msg.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) msg.addr = client->addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) msg.buf = addr_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) msg.len = len + 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) ret = i2c_transfer(client->adapter, &msg, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) kfree(addr_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return ret < 0 ? ret : (ret != 1 ? -EIO : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return goodix_i2c_write(client, reg, &value, sizeof(value));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) static const struct goodix_chip_data *goodix_get_chip_data(const char *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) for (i = 0; goodix_chip_ids[i].id; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (!strcmp(goodix_chip_ids[i].id, id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return goodix_chip_ids[i].data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return >9x_chip_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) unsigned long max_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) int touch_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) u16 addr = GOODIX_READ_COOR_ADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * We are going to read 1-byte header,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * ts->contact_size * max(1, touch_num) bytes of coordinates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * and 1-byte footer which contains the touch-key code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) const int header_contact_keycode_size = 1 + ts->contact_size + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * The 'buffer status' bit, which indicates that the data is valid, is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * not set as soon as the interrupt is raised, but slightly after.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * This takes around 10 ms to happen, so we poll for 20 ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) error = goodix_i2c_read(ts->client, addr, data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) header_contact_keycode_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) dev_err(&ts->client->dev, "I2C transfer error: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (data[0] & GOODIX_BUFFER_STATUS_READY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) touch_num = data[0] & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (touch_num > ts->max_touch_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) return -EPROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (touch_num > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) addr += header_contact_keycode_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) data += header_contact_keycode_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) error = goodix_i2c_read(ts->client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) addr, data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) ts->contact_size *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) (touch_num - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return touch_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) usleep_range(1000, 2000); /* Poll every 1 - 2 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) } while (time_before(jiffies, max_timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) * The Goodix panel will send spurious interrupts after a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) * 'finger up' event, which will always cause a timeout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return -ENOMSG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) int id = coor_data[0] & 0x0F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) int input_x = get_unaligned_le16(&coor_data[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) int input_y = get_unaligned_le16(&coor_data[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) int input_w = get_unaligned_le16(&coor_data[5]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) input_mt_slot(ts->input_dev, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) touchscreen_report_pos(ts->input_dev, &ts->prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) input_x, input_y, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int id = coor_data[1] & 0x0F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) int input_x = get_unaligned_le16(&coor_data[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) int input_y = get_unaligned_le16(&coor_data[5]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int input_w = get_unaligned_le16(&coor_data[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) input_mt_slot(ts->input_dev, id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) touchscreen_report_pos(ts->input_dev, &ts->prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) input_x, input_y, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) int touch_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) u8 key_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (data[0] & GOODIX_HAVE_KEY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) touch_num = data[0] & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) key_value = data[1 + ts->contact_size * touch_num];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) for (i = 0; i < GOODIX_MAX_KEYS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (key_value & BIT(i))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) input_report_key(ts->input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) ts->keymap[i], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) for (i = 0; i < GOODIX_MAX_KEYS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) input_report_key(ts->input_dev, ts->keymap[i], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * goodix_process_events - Process incoming events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * @ts: our goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * Called when the IRQ is triggered. Read the current device state, and push
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * the input events to the user space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) static void goodix_process_events(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int touch_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) touch_num = goodix_ts_read_input_report(ts, point_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) if (touch_num < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) goodix_ts_report_key(ts, point_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) for (i = 0; i < touch_num; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (ts->contact_size == 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) goodix_ts_report_touch_9b(ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) &point_data[1 + ts->contact_size * i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) goodix_ts_report_touch_8b(ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) &point_data[1 + ts->contact_size * i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) input_mt_sync_frame(ts->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) input_sync(ts->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) * goodix_ts_irq_handler - The IRQ handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) * @irq: interrupt number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) * @dev_id: private data pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct goodix_ts_data *ts = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) goodix_process_events(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) dev_err(&ts->client->dev, "I2C write end_cmd error\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static void goodix_free_irq(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) devm_free_irq(&ts->client->dev, ts->client->irq, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static int goodix_request_irq(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return devm_request_threaded_irq(&ts->client->dev, ts->client->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) NULL, goodix_ts_irq_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) ts->irq_flags, ts->client->name, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) int i, raw_cfg_len = len - 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) u8 check_sum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) for (i = 0; i < raw_cfg_len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) check_sum += cfg[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) check_sum = (~check_sum) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) if (check_sum != cfg[raw_cfg_len]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) "The checksum of the config fw is not correct");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (cfg[raw_cfg_len + 1] != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) "Config fw must have Config_Fresh register set");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) int i, raw_cfg_len = ts->chip->config_len - 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) u8 check_sum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) for (i = 0; i < raw_cfg_len; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) check_sum += ts->config[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) check_sum = (~check_sum) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ts->config[raw_cfg_len] = check_sum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) ts->config[raw_cfg_len + 1] = 1; /* Set "config_fresh" bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) int i, raw_cfg_len = len - 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) u16 check_sum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) for (i = 0; i < raw_cfg_len; i += 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) check_sum += get_unaligned_be16(&cfg[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) check_sum = (~check_sum) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) "The checksum of the config fw is not correct");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (cfg[raw_cfg_len + 2] != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) "Config fw must have Config_Fresh register set");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) int i, raw_cfg_len = ts->chip->config_len - 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) u16 check_sum = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) for (i = 0; i < raw_cfg_len; i += 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) check_sum += get_unaligned_be16(&ts->config[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) check_sum = (~check_sum) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ts->config[raw_cfg_len + 2] = 1; /* Set "config_fresh" bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * goodix_check_cfg - Checks if config fw is valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * @ts: goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * @cfg: firmware config data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) if (len < GOODIX_CONFIG_MIN_LENGTH ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) len > GOODIX_CONFIG_MAX_LENGTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) "The length of the config fw is not correct");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) return ts->chip->check_config(ts, cfg, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * goodix_send_cfg - Write fw config to device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) * @ts: goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * @cfg: config firmware to write to device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) static int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) error = goodix_check_cfg(ts, cfg, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) dev_err(&ts->client->dev, "Failed to write config data: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) dev_dbg(&ts->client->dev, "Config sent successfully.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) /* Let the firmware reconfigure itself, so sleep for 10ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) usleep_range(10000, 11000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) #ifdef ACPI_GPIO_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) status = acpi_evaluate_object(handle, "INTI", NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) return ACPI_SUCCESS(status) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) status = acpi_execute_simple_method(handle, "INTO", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return ACPI_SUCCESS(status) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) "%s called on device without ACPI support\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) "%s called on device without ACPI support\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) switch (ts->irq_pin_access_method) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) case IRQ_PIN_ACCESS_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) "%s called without an irq_pin_access_method set\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) case IRQ_PIN_ACCESS_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) return gpiod_direction_output(ts->gpiod_int, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) case IRQ_PIN_ACCESS_ACPI_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * The IRQ pin triggers on a falling edge, so its gets marked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * as active-low, use output_raw to avoid the value inversion.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) return gpiod_direction_output_raw(ts->gpiod_int, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) case IRQ_PIN_ACCESS_ACPI_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return goodix_pin_acpi_output_method(ts, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) return -EINVAL; /* Never reached */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) static int goodix_irq_direction_input(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) switch (ts->irq_pin_access_method) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) case IRQ_PIN_ACCESS_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) "%s called without an irq_pin_access_method set\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) case IRQ_PIN_ACCESS_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) return gpiod_direction_input(ts->gpiod_int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) case IRQ_PIN_ACCESS_ACPI_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return gpiod_direction_input(ts->gpiod_int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) case IRQ_PIN_ACCESS_ACPI_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) return goodix_pin_acpi_direction_input(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) return -EINVAL; /* Never reached */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) static int goodix_int_sync(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) error = goodix_irq_direction_output(ts, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) msleep(50); /* T5: 50ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) error = goodix_irq_direction_input(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * goodix_reset - Reset device during power on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * @ts: goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) static int goodix_reset(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) /* begin select I2C slave addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) error = gpiod_direction_output(ts->gpiod_rst, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) msleep(20); /* T2: > 10ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) error = goodix_irq_direction_output(ts, ts->client->addr == 0x14);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) usleep_range(100, 2000); /* T3: > 100us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) error = gpiod_direction_output(ts->gpiod_rst, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) usleep_range(6000, 10000); /* T4: > 5ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) /* end select I2C slave addr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) error = gpiod_direction_input(ts->gpiod_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) error = goodix_int_sync(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) #ifdef ACPI_GPIO_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) #include <asm/cpu_device_id.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) #include <asm/intel-family.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) static const struct x86_cpu_id baytrail_cpu_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT, X86_FEATURE_ANY, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) static inline bool is_byt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) const struct x86_cpu_id *id = x86_match_cpu(baytrail_cpu_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) return !!id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) static const struct acpi_gpio_params first_gpio = { 0, 0, false };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) static const struct acpi_gpio_params second_gpio = { 1, 0, false };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) { GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) { GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) { GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) static int goodix_resource(struct acpi_resource *ares, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct goodix_ts_data *ts = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) struct device *dev = &ts->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) struct acpi_resource_gpio *gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) switch (ares->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) case ACPI_RESOURCE_TYPE_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) gpio = &ares->data.gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) if (ts->gpio_int_idx == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) ts->gpio_int_idx = ts->gpio_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) ts->gpio_int_idx = -2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) ts->gpio_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * This function gets called in case we fail to get the irq GPIO directly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * because the ACPI tables lack GPIO-name to APCI _CRS index mappings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * (no _DSD UUID daffd814-6eba-4d8c-8a91-bc9bbf4aa301 data).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * In that case we add our own mapping and then goodix_get_gpio_config()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) * retries to get the GPIOs based on the added mapping.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) const struct acpi_gpio_mapping *gpio_mapping = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) struct device *dev = &ts->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) LIST_HEAD(resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) ts->gpio_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) ts->gpio_int_idx = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) goodix_resource, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) dev_err(dev, "Error getting ACPI resources: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) acpi_dev_free_resource_list(&resources);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) gpio_mapping = acpi_goodix_int_first_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) gpio_mapping = acpi_goodix_int_last_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) } else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) acpi_has_method(ACPI_HANDLE(dev), "INTI") &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) acpi_has_method(ACPI_HANDLE(dev), "INTO")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) gpio_mapping = acpi_goodix_reset_only_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) } else if (is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) gpio_mapping = acpi_goodix_int_last_gpios;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) ts->gpio_count, ts->gpio_int_idx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) #endif /* CONFIG_X86 && CONFIG_ACPI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) * goodix_get_gpio_config - Get GPIO config from ACPI/DT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) * @ts: goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) static int goodix_get_gpio_config(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct gpio_desc *gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) bool added_acpi_mappings = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) if (!ts->client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) dev = &ts->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) ts->avdd28 = devm_regulator_get(dev, "AVDD28");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (IS_ERR(ts->avdd28)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) error = PTR_ERR(ts->avdd28);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (error != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) "Failed to get AVDD28 regulator: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) ts->vddio = devm_regulator_get(dev, "VDDIO");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) if (IS_ERR(ts->vddio)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) error = PTR_ERR(ts->vddio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) if (error != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) "Failed to get VDDIO regulator: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) retry_get_irq_gpio:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) /* Get the interrupt GPIO pin number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (IS_ERR(gpiod)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) error = PTR_ERR(gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) if (error != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) dev_dbg(dev, "Failed to get %s GPIO: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) GOODIX_GPIO_INT_NAME, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) added_acpi_mappings = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) if (goodix_add_acpi_gpio_mappings(ts) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) goto retry_get_irq_gpio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) ts->gpiod_int = gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /* Get the reset line GPIO pin number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, GPIOD_IN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) if (IS_ERR(gpiod)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) error = PTR_ERR(gpiod);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) if (error != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) dev_dbg(dev, "Failed to get %s GPIO: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) GOODIX_GPIO_RST_NAME, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) ts->gpiod_rst = gpiod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) switch (ts->irq_pin_access_method) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) case IRQ_PIN_ACCESS_ACPI_GPIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) * We end up here if goodix_add_acpi_gpio_mappings() has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) * called devm_acpi_dev_add_driver_gpios() because the ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) * tables did not contain name to index mappings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) * Check that we successfully got both GPIOs after we've
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * added our own acpi_gpio_mapping and if we did not get both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * GPIOs reset irq_pin_access_method to IRQ_PIN_ACCESS_NONE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) if (!ts->gpiod_int || !ts->gpiod_rst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) case IRQ_PIN_ACCESS_ACPI_METHOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (!ts->gpiod_rst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (ts->gpiod_int && ts->gpiod_rst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) ts->reset_controller_at_probe = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) ts->load_cfg_from_disk = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) * goodix_read_config - Read the embedded configuration of the panel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) * @ts: our goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * Must be called during probe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) static void goodix_read_config(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) int x_max, y_max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) error = goodix_i2c_read(ts->client, ts->chip->config_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) ts->config, ts->chip->config_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) dev_warn(&ts->client->dev, "Error reading config: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) ts->int_trigger_type = GOODIX_INT_TRIGGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) ts->max_touch_num = GOODIX_MAX_CONTACTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) if (x_max && y_max) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) ts->chip->calc_config_checksum(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) * goodix_read_version - Read goodix touchscreen version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) * @ts: our goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) static int goodix_read_version(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) u8 buf[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) char id_str[GOODIX_ID_MAX_LEN + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) dev_err(&ts->client->dev, "read version failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) memcpy(id_str, buf, GOODIX_ID_MAX_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) id_str[GOODIX_ID_MAX_LEN] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) ts->version = get_unaligned_le16(&buf[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) ts->version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * goodix_i2c_test - I2C test function to check if the device answers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) * @client: the i2c client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) static int goodix_i2c_test(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) int retry = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) u8 test;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) while (retry++ < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) error = goodix_i2c_read(client, GOODIX_REG_ID,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) &test, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) dev_err(&client->dev, "i2c test failed attempt %d: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) retry, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) * goodix_configure_dev - Finish device initialization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) * @ts: our goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) * Must be called from probe to finish initialization of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) * Contains the common initialization code for both devices that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * declare gpio pins and devices that do not. It is either called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * directly from probe or from request_firmware_wait callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) static int goodix_configure_dev(struct goodix_ts_data *ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) ts->int_trigger_type = GOODIX_INT_TRIGGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) ts->max_touch_num = GOODIX_MAX_CONTACTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) ts->input_dev = devm_input_allocate_device(&ts->client->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) if (!ts->input_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) dev_err(&ts->client->dev, "Failed to allocate input device.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) ts->input_dev->name = "Goodix Capacitive TouchScreen";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) ts->input_dev->phys = "input/ts";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) ts->input_dev->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) ts->input_dev->id.vendor = 0x0416;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) if (kstrtou16(ts->id, 10, &ts->input_dev->id.product))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ts->input_dev->id.product = 0x1001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) ts->input_dev->id.version = ts->version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) ts->input_dev->keycode = ts->keymap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) ts->input_dev->keycodesize = sizeof(ts->keymap[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) ts->input_dev->keycodemax = GOODIX_MAX_KEYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) /* Capacitive Windows/Home button on some devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) for (i = 0; i < GOODIX_MAX_KEYS; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) if (i == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) ts->keymap[i] = KEY_LEFTMETA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) ts->keymap[i] = KEY_F1 + (i - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) /* Read configuration and apply touchscreen parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) goodix_read_config(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) /* Try overriding touchscreen parameters via device properties */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) "Invalid config (%d, %d, %d), using defaults\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) ts->prop.max_x, ts->prop.max_y, ts->max_touch_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) ts->prop.max_x = GOODIX_MAX_WIDTH - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) ts->prop.max_y = GOODIX_MAX_HEIGHT - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) ts->max_touch_num = GOODIX_MAX_CONTACTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) input_abs_set_max(ts->input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) ABS_MT_POSITION_X, ts->prop.max_x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) input_abs_set_max(ts->input_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) ABS_MT_POSITION_Y, ts->prop.max_y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (dmi_check_system(nine_bytes_report)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) ts->contact_size = 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) dev_dbg(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) "Non-standard 9-bytes report format quirk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) if (dmi_check_system(inverted_x_screen)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) ts->prop.invert_x = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) dev_dbg(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) "Applying 'inverted x screen' quirk\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) error = input_mt_init_slots(ts->input_dev, ts->max_touch_num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) "Failed to initialize MT slots: %d", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) error = input_register_device(ts->input_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) dev_err(&ts->client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) "Failed to register input device: %d", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) error = goodix_request_irq(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) dev_err(&ts->client->dev, "request IRQ failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) * goodix_config_cb - Callback to finish device init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) * @ts: our goodix_ts_data pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * request_firmware_wait callback that finishes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) * initialization of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) static void goodix_config_cb(const struct firmware *cfg, void *ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) struct goodix_ts_data *ts = ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) if (cfg) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) /* send device configuration to the firmware */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) error = goodix_send_cfg(ts, cfg->data, cfg->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) goto err_release_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) goodix_configure_dev(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) err_release_cfg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) release_firmware(cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) complete_all(&ts->firmware_loading_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) static void goodix_disable_regulators(void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) struct goodix_ts_data *ts = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) regulator_disable(ts->vddio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) regulator_disable(ts->avdd28);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) static int goodix_ts_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) struct goodix_ts_data *ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) dev_err(&client->dev, "I2C check functionality failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) if (!ts)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) ts->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) i2c_set_clientdata(client, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) init_completion(&ts->firmware_loading_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) ts->contact_size = GOODIX_CONTACT_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) error = goodix_get_gpio_config(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) /* power up the controller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) error = regulator_enable(ts->avdd28);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) "Failed to enable AVDD28 regulator: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) error = regulator_enable(ts->vddio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) "Failed to enable VDDIO regulator: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) regulator_disable(ts->avdd28);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) error = devm_add_action_or_reset(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) goodix_disable_regulators, ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) reset:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) if (ts->reset_controller_at_probe) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) /* reset the controller */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) error = goodix_reset(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) dev_err(&client->dev, "Controller reset failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) error = goodix_i2c_test(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) if (!ts->reset_controller_at_probe &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) /* Retry after a controller reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) ts->reset_controller_at_probe = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) goto reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) dev_err(&client->dev, "I2C communication failure: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) error = goodix_read_version(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) dev_err(&client->dev, "Read version failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) ts->chip = goodix_get_chip_data(ts->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (ts->load_cfg_from_disk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) /* update device config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) "goodix_%s_cfg.bin", ts->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) if (!ts->cfg_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) &client->dev, GFP_KERNEL, ts,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) goodix_config_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) dev_err(&client->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) "Failed to invoke firmware loader: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) error = goodix_configure_dev(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) static int goodix_ts_remove(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) struct goodix_ts_data *ts = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) if (ts->load_cfg_from_disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) wait_for_completion(&ts->firmware_loading_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) static int __maybe_unused goodix_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) struct goodix_ts_data *ts = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) if (ts->load_cfg_from_disk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) wait_for_completion(&ts->firmware_loading_complete);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) /* We need gpio pins to suspend/resume */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) /* Free IRQ as IRQ pin is used as output in the suspend sequence */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) goodix_free_irq(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) /* Output LOW on the INT pin for 5 ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) error = goodix_irq_direction_output(ts, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) goodix_request_irq(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) usleep_range(5000, 6000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) GOODIX_CMD_SCREEN_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) dev_err(&ts->client->dev, "Screen off command failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) goodix_irq_direction_input(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) goodix_request_irq(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) * The datasheet specifies that the interval between sending screen-off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) * command and wake-up should be longer than 58 ms. To avoid waking up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) * sooner, delay 58ms here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) msleep(58);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) static int __maybe_unused goodix_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct goodix_ts_data *ts = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) u8 config_ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) * Exit sleep mode by outputting HIGH level to INT pin
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * for 2ms~5ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) error = goodix_irq_direction_output(ts, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) usleep_range(2000, 5000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) error = goodix_int_sync(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) error = goodix_i2c_read(ts->client, ts->chip->config_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) &config_ver, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) dev_warn(dev, "Error reading config version: %d, resetting controller\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) else if (config_ver != ts->config[0])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) dev_info(dev, "Config version mismatch %d != %d, resetting controller\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) config_ver, ts->config[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) if (error != 0 || config_ver != ts->config[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) error = goodix_reset(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) dev_err(dev, "Controller reset failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) error = goodix_send_cfg(ts, ts->config, ts->chip->config_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) error = goodix_request_irq(ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) static SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) static const struct i2c_device_id goodix_ts_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) { "GDIX1001:00", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) MODULE_DEVICE_TABLE(i2c, goodix_ts_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) static const struct acpi_device_id goodix_acpi_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) { "GDIX1001", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) { "GDIX1002", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) static const struct of_device_id goodix_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) { .compatible = "goodix,gt1151" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) { .compatible = "goodix,gt5663" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) { .compatible = "goodix,gt5688" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) { .compatible = "goodix,gt911" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) { .compatible = "goodix,gt9110" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) { .compatible = "goodix,gt912" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) { .compatible = "goodix,gt9147" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) { .compatible = "goodix,gt917s" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) { .compatible = "goodix,gt927" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) { .compatible = "goodix,gt9271" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) { .compatible = "goodix,gt928" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) { .compatible = "goodix,gt9286" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) { .compatible = "goodix,gt967" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) MODULE_DEVICE_TABLE(of, goodix_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) static struct i2c_driver goodix_ts_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) .probe = goodix_ts_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) .remove = goodix_ts_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) .id_table = goodix_ts_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) .name = "Goodix-TS",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) .acpi_match_table = ACPI_PTR(goodix_acpi_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) .of_match_table = of_match_ptr(goodix_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) .pm = &goodix_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) module_i2c_driver(goodix_ts_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) MODULE_DESCRIPTION("Goodix touchscreen driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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