1b886d83cSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2ca96ea86SBastien Nocera /* 3ca96ea86SBastien Nocera * Driver for Goodix Touchscreens 4ca96ea86SBastien Nocera * 5ca96ea86SBastien Nocera * Copyright (c) 2014 Red Hat Inc. 6ad48cf5eSKarsten Merker * Copyright (c) 2015 K. Merker <merker@debian.org> 7ca96ea86SBastien Nocera * 8ca96ea86SBastien Nocera * This code is based on gt9xx.c authored by andrew@goodix.com: 9ca96ea86SBastien Nocera * 10ca96ea86SBastien Nocera * 2010 - 2012 Goodix Technology. 11ca96ea86SBastien Nocera */ 12ca96ea86SBastien Nocera 13ca96ea86SBastien Nocera 14ca96ea86SBastien Nocera #include <linux/kernel.h> 158b5a359cSBastien Nocera #include <linux/dmi.h> 1668caf858SIrina Tirdea #include <linux/firmware.h> 17ec6e1b40SIrina Tirdea #include <linux/gpio/consumer.h> 18ca96ea86SBastien Nocera #include <linux/i2c.h> 19ca96ea86SBastien Nocera #include <linux/input.h> 20ca96ea86SBastien Nocera #include <linux/input/mt.h> 21fafef982SMarcin Niestroj #include <linux/input/touchscreen.h> 22ca96ea86SBastien Nocera #include <linux/module.h> 23ca96ea86SBastien Nocera #include <linux/delay.h> 24ca96ea86SBastien Nocera #include <linux/irq.h> 25ca96ea86SBastien Nocera #include <linux/interrupt.h> 26ae97fb58SJagan Teki #include <linux/regulator/consumer.h> 27ca96ea86SBastien Nocera #include <linux/slab.h> 28771d8f1bSAleksei Mamlin #include <linux/acpi.h> 29771d8f1bSAleksei Mamlin #include <linux/of.h> 30ca96ea86SBastien Nocera #include <asm/unaligned.h> 31ca96ea86SBastien Nocera 32aebfc52cSHans de Goede #define GOODIX_GPIO_INT_NAME "irq" 33aebfc52cSHans de Goede #define GOODIX_GPIO_RST_NAME "reset" 34aebfc52cSHans de Goede 35aebfc52cSHans de Goede #define GOODIX_MAX_HEIGHT 4096 36aebfc52cSHans de Goede #define GOODIX_MAX_WIDTH 4096 37aebfc52cSHans de Goede #define GOODIX_INT_TRIGGER 1 38aebfc52cSHans de Goede #define GOODIX_CONTACT_SIZE 8 39aebfc52cSHans de Goede #define GOODIX_MAX_CONTACT_SIZE 9 40aebfc52cSHans de Goede #define GOODIX_MAX_CONTACTS 10 41492ee52cSDmitry Mastykin #define GOODIX_MAX_KEYS 7 42aebfc52cSHans de Goede 43686e8a24SHans de Goede #define GOODIX_CONFIG_MIN_LENGTH 186 44aebfc52cSHans de Goede #define GOODIX_CONFIG_911_LENGTH 186 45aebfc52cSHans de Goede #define GOODIX_CONFIG_967_LENGTH 228 46686e8a24SHans de Goede #define GOODIX_CONFIG_GT9X_LENGTH 240 47686e8a24SHans de Goede #define GOODIX_CONFIG_MAX_LENGTH 240 48aebfc52cSHans de Goede 49aebfc52cSHans de Goede /* Register defines */ 50aebfc52cSHans de Goede #define GOODIX_REG_COMMAND 0x8040 51aebfc52cSHans de Goede #define GOODIX_CMD_SCREEN_OFF 0x05 52aebfc52cSHans de Goede 53aebfc52cSHans de Goede #define GOODIX_READ_COOR_ADDR 0x814E 54aebfc52cSHans de Goede #define GOODIX_GT1X_REG_CONFIG_DATA 0x8050 55aebfc52cSHans de Goede #define GOODIX_GT9X_REG_CONFIG_DATA 0x8047 56aebfc52cSHans de Goede #define GOODIX_REG_ID 0x8140 57aebfc52cSHans de Goede 58aebfc52cSHans de Goede #define GOODIX_BUFFER_STATUS_READY BIT(7) 59492ee52cSDmitry Mastykin #define GOODIX_HAVE_KEY BIT(4) 60aebfc52cSHans de Goede #define GOODIX_BUFFER_STATUS_TIMEOUT 20 61aebfc52cSHans de Goede 62aebfc52cSHans de Goede #define RESOLUTION_LOC 1 63aebfc52cSHans de Goede #define MAX_CONTACTS_LOC 5 64aebfc52cSHans de Goede #define TRIGGER_LOC 6 65aebfc52cSHans de Goede 66c9c20ee3SHans de Goede /* Our special handling for GPIO accesses through ACPI is x86 specific */ 67c9c20ee3SHans de Goede #if defined CONFIG_X86 && defined CONFIG_ACPI 68c9c20ee3SHans de Goede #define ACPI_GPIO_SUPPORT 69c9c20ee3SHans de Goede #endif 70c9c20ee3SHans de Goede 7125309004SMarcin Niestroj struct goodix_ts_data; 7225309004SMarcin Niestroj 7349db3997SHans de Goede enum goodix_irq_pin_access_method { 7449db3997SHans de Goede IRQ_PIN_ACCESS_NONE, 7549db3997SHans de Goede IRQ_PIN_ACCESS_GPIO, 76a7d4b171SHans de Goede IRQ_PIN_ACCESS_ACPI_GPIO, 77c5fca485SHans de Goede IRQ_PIN_ACCESS_ACPI_METHOD, 7849db3997SHans de Goede }; 7949db3997SHans de Goede 8025309004SMarcin Niestroj struct goodix_chip_data { 8125309004SMarcin Niestroj u16 config_addr; 8225309004SMarcin Niestroj int config_len; 831a67448fSHans de Goede int (*check_config)(struct goodix_ts_data *ts, const u8 *cfg, int len); 84de956caeSHans de Goede void (*calc_config_checksum)(struct goodix_ts_data *ts); 8525309004SMarcin Niestroj }; 8625309004SMarcin Niestroj 87cae102e2SIcenowy Zheng struct goodix_chip_id { 88cae102e2SIcenowy Zheng const char *id; 89cae102e2SIcenowy Zheng const struct goodix_chip_data *data; 90cae102e2SIcenowy Zheng }; 91cae102e2SIcenowy Zheng 92cae102e2SIcenowy Zheng #define GOODIX_ID_MAX_LEN 4 93cae102e2SIcenowy Zheng 94ca96ea86SBastien Nocera struct goodix_ts_data { 95ca96ea86SBastien Nocera struct i2c_client *client; 96ca96ea86SBastien Nocera struct input_dev *input_dev; 9725309004SMarcin Niestroj const struct goodix_chip_data *chip; 98fafef982SMarcin Niestroj struct touchscreen_properties prop; 99ca96ea86SBastien Nocera unsigned int max_touch_num; 100ca96ea86SBastien Nocera unsigned int int_trigger_type; 101ae97fb58SJagan Teki struct regulator *avdd28; 102ae97fb58SJagan Teki struct regulator *vddio; 103ec6e1b40SIrina Tirdea struct gpio_desc *gpiod_int; 104ec6e1b40SIrina Tirdea struct gpio_desc *gpiod_rst; 105a7d4b171SHans de Goede int gpio_count; 106a7d4b171SHans de Goede int gpio_int_idx; 107cae102e2SIcenowy Zheng char id[GOODIX_ID_MAX_LEN + 1]; 10868caf858SIrina Tirdea u16 version; 10968caf858SIrina Tirdea const char *cfg_name; 1101921daceSHans de Goede bool reset_controller_at_probe; 111e070a97bSHans de Goede bool load_cfg_from_disk; 11268caf858SIrina Tirdea struct completion firmware_loading_complete; 1135ab09d6aSIrina Tirdea unsigned long irq_flags; 11449db3997SHans de Goede enum goodix_irq_pin_access_method irq_pin_access_method; 115bd3b8480SYauhen Kharuzhy unsigned int contact_size; 116de956caeSHans de Goede u8 config[GOODIX_CONFIG_MAX_LENGTH]; 117492ee52cSDmitry Mastykin unsigned short keymap[GOODIX_MAX_KEYS]; 118ca96ea86SBastien Nocera }; 119ca96ea86SBastien Nocera 12025309004SMarcin Niestroj static int goodix_check_cfg_8(struct goodix_ts_data *ts, 1211a67448fSHans de Goede const u8 *cfg, int len); 12225309004SMarcin Niestroj static int goodix_check_cfg_16(struct goodix_ts_data *ts, 1231a67448fSHans de Goede const u8 *cfg, int len); 124de956caeSHans de Goede static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts); 125de956caeSHans de Goede static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts); 12625309004SMarcin Niestroj 12725309004SMarcin Niestroj static const struct goodix_chip_data gt1x_chip_data = { 12825309004SMarcin Niestroj .config_addr = GOODIX_GT1X_REG_CONFIG_DATA, 129686e8a24SHans de Goede .config_len = GOODIX_CONFIG_GT9X_LENGTH, 13025309004SMarcin Niestroj .check_config = goodix_check_cfg_16, 131de956caeSHans de Goede .calc_config_checksum = goodix_calc_cfg_checksum_16, 13225309004SMarcin Niestroj }; 13325309004SMarcin Niestroj 13425309004SMarcin Niestroj static const struct goodix_chip_data gt911_chip_data = { 13525309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 13625309004SMarcin Niestroj .config_len = GOODIX_CONFIG_911_LENGTH, 13725309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 138de956caeSHans de Goede .calc_config_checksum = goodix_calc_cfg_checksum_8, 13925309004SMarcin Niestroj }; 14025309004SMarcin Niestroj 14125309004SMarcin Niestroj static const struct goodix_chip_data gt967_chip_data = { 14225309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 14325309004SMarcin Niestroj .config_len = GOODIX_CONFIG_967_LENGTH, 14425309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 145de956caeSHans de Goede .calc_config_checksum = goodix_calc_cfg_checksum_8, 14625309004SMarcin Niestroj }; 14725309004SMarcin Niestroj 14825309004SMarcin Niestroj static const struct goodix_chip_data gt9x_chip_data = { 14925309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 150686e8a24SHans de Goede .config_len = GOODIX_CONFIG_GT9X_LENGTH, 15125309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 152de956caeSHans de Goede .calc_config_checksum = goodix_calc_cfg_checksum_8, 15325309004SMarcin Niestroj }; 15425309004SMarcin Niestroj 155cae102e2SIcenowy Zheng static const struct goodix_chip_id goodix_chip_ids[] = { 156cae102e2SIcenowy Zheng { .id = "1151", .data = >1x_chip_data }, 157cae102e2SIcenowy Zheng { .id = "5663", .data = >1x_chip_data }, 158cae102e2SIcenowy Zheng { .id = "5688", .data = >1x_chip_data }, 159b5e458afSIcenowy Zheng { .id = "917S", .data = >1x_chip_data }, 160*2dce6db7SAngeloGioacchino Del Regno { .id = "9286", .data = >1x_chip_data }, 161cae102e2SIcenowy Zheng 162cae102e2SIcenowy Zheng { .id = "911", .data = >911_chip_data }, 163cae102e2SIcenowy Zheng { .id = "9271", .data = >911_chip_data }, 164cae102e2SIcenowy Zheng { .id = "9110", .data = >911_chip_data }, 165cae102e2SIcenowy Zheng { .id = "927", .data = >911_chip_data }, 166cae102e2SIcenowy Zheng { .id = "928", .data = >911_chip_data }, 167cae102e2SIcenowy Zheng 168cae102e2SIcenowy Zheng { .id = "912", .data = >967_chip_data }, 169b9a1c116SYannick Fertre { .id = "9147", .data = >967_chip_data }, 170cae102e2SIcenowy Zheng { .id = "967", .data = >967_chip_data }, 171cae102e2SIcenowy Zheng { } 172cae102e2SIcenowy Zheng }; 173cae102e2SIcenowy Zheng 174ca96ea86SBastien Nocera static const unsigned long goodix_irq_flags[] = { 175ca96ea86SBastien Nocera IRQ_TYPE_EDGE_RISING, 176ca96ea86SBastien Nocera IRQ_TYPE_EDGE_FALLING, 177ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_LOW, 178ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_HIGH, 179ca96ea86SBastien Nocera }; 180ca96ea86SBastien Nocera 1818b5a359cSBastien Nocera /* 1828b5a359cSBastien Nocera * Those tablets have their coordinates origin at the bottom right 1838b5a359cSBastien Nocera * of the tablet, as if rotated 180 degrees 1848b5a359cSBastien Nocera */ 1858b5a359cSBastien Nocera static const struct dmi_system_id rotated_screen[] = { 1868b5a359cSBastien Nocera #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1878b5a359cSBastien Nocera { 188df5b5e55SHans de Goede .ident = "Teclast X89", 189df5b5e55SHans de Goede .matches = { 190df5b5e55SHans de Goede /* tPAD is too generic, also match on bios date */ 191df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_VENDOR, "TECLAST"), 192df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_NAME, "tPAD"), 193df5b5e55SHans de Goede DMI_MATCH(DMI_BIOS_DATE, "12/19/2014"), 194df5b5e55SHans de Goede }, 195df5b5e55SHans de Goede }, 196df5b5e55SHans de Goede { 197cffdd6d9SSimon Beginn .ident = "Teclast X98 Pro", 198cffdd6d9SSimon Beginn .matches = { 199cffdd6d9SSimon Beginn /* 200cffdd6d9SSimon Beginn * Only match BIOS date, because the manufacturers 201cffdd6d9SSimon Beginn * BIOS does not report the board name at all 202cffdd6d9SSimon Beginn * (sometimes)... 203cffdd6d9SSimon Beginn */ 204cffdd6d9SSimon Beginn DMI_MATCH(DMI_BOARD_VENDOR, "TECLAST"), 205cffdd6d9SSimon Beginn DMI_MATCH(DMI_BIOS_DATE, "10/28/2015"), 206cffdd6d9SSimon Beginn }, 207cffdd6d9SSimon Beginn }, 208cffdd6d9SSimon Beginn { 2098b5a359cSBastien Nocera .ident = "WinBook TW100", 2108b5a359cSBastien Nocera .matches = { 2118b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 2128b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW100") 2138b5a359cSBastien Nocera } 2148b5a359cSBastien Nocera }, 2158b5a359cSBastien Nocera { 2168b5a359cSBastien Nocera .ident = "WinBook TW700", 2178b5a359cSBastien Nocera .matches = { 2188b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 2198b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW700") 2208b5a359cSBastien Nocera }, 2218b5a359cSBastien Nocera }, 2228b5a359cSBastien Nocera #endif 2238b5a359cSBastien Nocera {} 2248b5a359cSBastien Nocera }; 2258b5a359cSBastien Nocera 226bd3b8480SYauhen Kharuzhy static const struct dmi_system_id nine_bytes_report[] = { 227bd3b8480SYauhen Kharuzhy #if defined(CONFIG_DMI) && defined(CONFIG_X86) 228bd3b8480SYauhen Kharuzhy { 229bd3b8480SYauhen Kharuzhy .ident = "Lenovo YogaBook", 230bd3b8480SYauhen Kharuzhy /* YB1-X91L/F and YB1-X90L/F */ 231bd3b8480SYauhen Kharuzhy .matches = { 232bd3b8480SYauhen Kharuzhy DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9") 233bd3b8480SYauhen Kharuzhy } 234bd3b8480SYauhen Kharuzhy }, 235bd3b8480SYauhen Kharuzhy #endif 236bd3b8480SYauhen Kharuzhy {} 237bd3b8480SYauhen Kharuzhy }; 238bd3b8480SYauhen Kharuzhy 2391dd5ddc1SSergei A. Trusov /* 2401dd5ddc1SSergei A. Trusov * Those tablets have their x coordinate inverted 2411dd5ddc1SSergei A. Trusov */ 2421dd5ddc1SSergei A. Trusov static const struct dmi_system_id inverted_x_screen[] = { 2431dd5ddc1SSergei A. Trusov #if defined(CONFIG_DMI) && defined(CONFIG_X86) 2441dd5ddc1SSergei A. Trusov { 2451dd5ddc1SSergei A. Trusov .ident = "Cube I15-TC", 2461dd5ddc1SSergei A. Trusov .matches = { 2471dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_SYS_VENDOR, "Cube"), 2481dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC") 2491dd5ddc1SSergei A. Trusov }, 2501dd5ddc1SSergei A. Trusov }, 2511dd5ddc1SSergei A. Trusov #endif 2521dd5ddc1SSergei A. Trusov {} 2531dd5ddc1SSergei A. Trusov }; 2541dd5ddc1SSergei A. Trusov 255ca96ea86SBastien Nocera /** 256ca96ea86SBastien Nocera * goodix_i2c_read - read data from a register of the i2c slave device. 257ca96ea86SBastien Nocera * 258ca96ea86SBastien Nocera * @client: i2c device. 259ca96ea86SBastien Nocera * @reg: the register to read from. 260ca96ea86SBastien Nocera * @buf: raw write data buffer. 261ca96ea86SBastien Nocera * @len: length of the buffer to write 262ca96ea86SBastien Nocera */ 263ca96ea86SBastien Nocera static int goodix_i2c_read(struct i2c_client *client, 264ca96ea86SBastien Nocera u16 reg, u8 *buf, int len) 265ca96ea86SBastien Nocera { 266ca96ea86SBastien Nocera struct i2c_msg msgs[2]; 267fafef982SMarcin Niestroj __be16 wbuf = cpu_to_be16(reg); 268ca96ea86SBastien Nocera int ret; 269ca96ea86SBastien Nocera 270ca96ea86SBastien Nocera msgs[0].flags = 0; 271ca96ea86SBastien Nocera msgs[0].addr = client->addr; 272ca96ea86SBastien Nocera msgs[0].len = 2; 273ca96ea86SBastien Nocera msgs[0].buf = (u8 *)&wbuf; 274ca96ea86SBastien Nocera 275ca96ea86SBastien Nocera msgs[1].flags = I2C_M_RD; 276ca96ea86SBastien Nocera msgs[1].addr = client->addr; 277ca96ea86SBastien Nocera msgs[1].len = len; 278ca96ea86SBastien Nocera msgs[1].buf = buf; 279ca96ea86SBastien Nocera 280ca96ea86SBastien Nocera ret = i2c_transfer(client->adapter, msgs, 2); 281ca96ea86SBastien Nocera return ret < 0 ? ret : (ret != ARRAY_SIZE(msgs) ? -EIO : 0); 282ca96ea86SBastien Nocera } 283ca96ea86SBastien Nocera 28468caf858SIrina Tirdea /** 28568caf858SIrina Tirdea * goodix_i2c_write - write data to a register of the i2c slave device. 28668caf858SIrina Tirdea * 28768caf858SIrina Tirdea * @client: i2c device. 28868caf858SIrina Tirdea * @reg: the register to write to. 28968caf858SIrina Tirdea * @buf: raw data buffer to write. 29068caf858SIrina Tirdea * @len: length of the buffer to write 29168caf858SIrina Tirdea */ 29268caf858SIrina Tirdea static int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, 29368caf858SIrina Tirdea unsigned len) 29468caf858SIrina Tirdea { 29568caf858SIrina Tirdea u8 *addr_buf; 29668caf858SIrina Tirdea struct i2c_msg msg; 29768caf858SIrina Tirdea int ret; 29868caf858SIrina Tirdea 29968caf858SIrina Tirdea addr_buf = kmalloc(len + 2, GFP_KERNEL); 30068caf858SIrina Tirdea if (!addr_buf) 30168caf858SIrina Tirdea return -ENOMEM; 30268caf858SIrina Tirdea 30368caf858SIrina Tirdea addr_buf[0] = reg >> 8; 30468caf858SIrina Tirdea addr_buf[1] = reg & 0xFF; 30568caf858SIrina Tirdea memcpy(&addr_buf[2], buf, len); 30668caf858SIrina Tirdea 30768caf858SIrina Tirdea msg.flags = 0; 30868caf858SIrina Tirdea msg.addr = client->addr; 30968caf858SIrina Tirdea msg.buf = addr_buf; 31068caf858SIrina Tirdea msg.len = len + 2; 31168caf858SIrina Tirdea 31268caf858SIrina Tirdea ret = i2c_transfer(client->adapter, &msg, 1); 31368caf858SIrina Tirdea kfree(addr_buf); 31468caf858SIrina Tirdea return ret < 0 ? ret : (ret != 1 ? -EIO : 0); 31568caf858SIrina Tirdea } 31668caf858SIrina Tirdea 3175ab09d6aSIrina Tirdea static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value) 3185ab09d6aSIrina Tirdea { 3195ab09d6aSIrina Tirdea return goodix_i2c_write(client, reg, &value, sizeof(value)); 3205ab09d6aSIrina Tirdea } 3215ab09d6aSIrina Tirdea 322cae102e2SIcenowy Zheng static const struct goodix_chip_data *goodix_get_chip_data(const char *id) 323a779fbc6SIrina Tirdea { 324cae102e2SIcenowy Zheng unsigned int i; 32525309004SMarcin Niestroj 326cae102e2SIcenowy Zheng for (i = 0; goodix_chip_ids[i].id; i++) { 327cae102e2SIcenowy Zheng if (!strcmp(goodix_chip_ids[i].id, id)) 328cae102e2SIcenowy Zheng return goodix_chip_ids[i].data; 329a779fbc6SIrina Tirdea } 330cae102e2SIcenowy Zheng 331cae102e2SIcenowy Zheng return >9x_chip_data; 332a779fbc6SIrina Tirdea } 333a779fbc6SIrina Tirdea 334ca96ea86SBastien Nocera static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data) 335ca96ea86SBastien Nocera { 3369b5db7aaSPaul Cercueil unsigned long max_timeout; 337ca96ea86SBastien Nocera int touch_num; 338ca96ea86SBastien Nocera int error; 339492ee52cSDmitry Mastykin u16 addr = GOODIX_READ_COOR_ADDR; 340492ee52cSDmitry Mastykin /* 341492ee52cSDmitry Mastykin * We are going to read 1-byte header, 342492ee52cSDmitry Mastykin * ts->contact_size * max(1, touch_num) bytes of coordinates 343492ee52cSDmitry Mastykin * and 1-byte footer which contains the touch-key code. 344492ee52cSDmitry Mastykin */ 345492ee52cSDmitry Mastykin const int header_contact_keycode_size = 1 + ts->contact_size + 1; 346ca96ea86SBastien Nocera 3479b5db7aaSPaul Cercueil /* 3489b5db7aaSPaul Cercueil * The 'buffer status' bit, which indicates that the data is valid, is 3499b5db7aaSPaul Cercueil * not set as soon as the interrupt is raised, but slightly after. 3509b5db7aaSPaul Cercueil * This takes around 10 ms to happen, so we poll for 20 ms. 3519b5db7aaSPaul Cercueil */ 3529b5db7aaSPaul Cercueil max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT); 3539b5db7aaSPaul Cercueil do { 354492ee52cSDmitry Mastykin error = goodix_i2c_read(ts->client, addr, data, 355492ee52cSDmitry Mastykin header_contact_keycode_size); 356ca96ea86SBastien Nocera if (error) { 3579b5db7aaSPaul Cercueil dev_err(&ts->client->dev, "I2C transfer error: %d\n", 3589b5db7aaSPaul Cercueil error); 359ca96ea86SBastien Nocera return error; 360ca96ea86SBastien Nocera } 361ca96ea86SBastien Nocera 3629b5db7aaSPaul Cercueil if (data[0] & GOODIX_BUFFER_STATUS_READY) { 363ca96ea86SBastien Nocera touch_num = data[0] & 0x0f; 364a7ac7c95SAleksei Mamlin if (touch_num > ts->max_touch_num) 365ca96ea86SBastien Nocera return -EPROTO; 366ca96ea86SBastien Nocera 367ca96ea86SBastien Nocera if (touch_num > 1) { 368492ee52cSDmitry Mastykin addr += header_contact_keycode_size; 369492ee52cSDmitry Mastykin data += header_contact_keycode_size; 370ca96ea86SBastien Nocera error = goodix_i2c_read(ts->client, 371492ee52cSDmitry Mastykin addr, data, 372bd3b8480SYauhen Kharuzhy ts->contact_size * 3739b5db7aaSPaul Cercueil (touch_num - 1)); 374ca96ea86SBastien Nocera if (error) 375ca96ea86SBastien Nocera return error; 376ca96ea86SBastien Nocera } 377ca96ea86SBastien Nocera 378ca96ea86SBastien Nocera return touch_num; 379ca96ea86SBastien Nocera } 380ca96ea86SBastien Nocera 3819b5db7aaSPaul Cercueil usleep_range(1000, 2000); /* Poll every 1 - 2 ms */ 3829b5db7aaSPaul Cercueil } while (time_before(jiffies, max_timeout)); 3839b5db7aaSPaul Cercueil 3849b5db7aaSPaul Cercueil /* 3859b5db7aaSPaul Cercueil * The Goodix panel will send spurious interrupts after a 3869b5db7aaSPaul Cercueil * 'finger up' event, which will always cause a timeout. 3879b5db7aaSPaul Cercueil */ 38824ef83f6SDmitry Mastykin return -ENOMSG; 3899b5db7aaSPaul Cercueil } 3909b5db7aaSPaul Cercueil 391bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data) 392ca96ea86SBastien Nocera { 393ca96ea86SBastien Nocera int id = coor_data[0] & 0x0F; 394ca96ea86SBastien Nocera int input_x = get_unaligned_le16(&coor_data[1]); 395ca96ea86SBastien Nocera int input_y = get_unaligned_le16(&coor_data[3]); 396ca96ea86SBastien Nocera int input_w = get_unaligned_le16(&coor_data[5]); 397ca96ea86SBastien Nocera 398ca96ea86SBastien Nocera input_mt_slot(ts->input_dev, id); 399ca96ea86SBastien Nocera input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 400fafef982SMarcin Niestroj touchscreen_report_pos(ts->input_dev, &ts->prop, 401fafef982SMarcin Niestroj input_x, input_y, true); 402ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 403ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 404ca96ea86SBastien Nocera } 405ca96ea86SBastien Nocera 406bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data) 407bd3b8480SYauhen Kharuzhy { 408bd3b8480SYauhen Kharuzhy int id = coor_data[1] & 0x0F; 409bd3b8480SYauhen Kharuzhy int input_x = get_unaligned_le16(&coor_data[3]); 410bd3b8480SYauhen Kharuzhy int input_y = get_unaligned_le16(&coor_data[5]); 411bd3b8480SYauhen Kharuzhy int input_w = get_unaligned_le16(&coor_data[7]); 412bd3b8480SYauhen Kharuzhy 413bd3b8480SYauhen Kharuzhy input_mt_slot(ts->input_dev, id); 414bd3b8480SYauhen Kharuzhy input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 415bd3b8480SYauhen Kharuzhy touchscreen_report_pos(ts->input_dev, &ts->prop, 416bd3b8480SYauhen Kharuzhy input_x, input_y, true); 417bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 418bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 419bd3b8480SYauhen Kharuzhy } 420bd3b8480SYauhen Kharuzhy 421492ee52cSDmitry Mastykin static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data) 422492ee52cSDmitry Mastykin { 423492ee52cSDmitry Mastykin int touch_num; 424492ee52cSDmitry Mastykin u8 key_value; 425492ee52cSDmitry Mastykin int i; 426492ee52cSDmitry Mastykin 427492ee52cSDmitry Mastykin if (data[0] & GOODIX_HAVE_KEY) { 428492ee52cSDmitry Mastykin touch_num = data[0] & 0x0f; 429492ee52cSDmitry Mastykin key_value = data[1 + ts->contact_size * touch_num]; 430492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; i++) 431492ee52cSDmitry Mastykin if (key_value & BIT(i)) 432492ee52cSDmitry Mastykin input_report_key(ts->input_dev, 433492ee52cSDmitry Mastykin ts->keymap[i], 1); 434492ee52cSDmitry Mastykin } else { 435492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; i++) 436492ee52cSDmitry Mastykin input_report_key(ts->input_dev, ts->keymap[i], 0); 437492ee52cSDmitry Mastykin } 438492ee52cSDmitry Mastykin } 439492ee52cSDmitry Mastykin 440ca96ea86SBastien Nocera /** 441ca96ea86SBastien Nocera * goodix_process_events - Process incoming events 442ca96ea86SBastien Nocera * 443ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 444ca96ea86SBastien Nocera * 445ca96ea86SBastien Nocera * Called when the IRQ is triggered. Read the current device state, and push 446ca96ea86SBastien Nocera * the input events to the user space. 447ca96ea86SBastien Nocera */ 448ca96ea86SBastien Nocera static void goodix_process_events(struct goodix_ts_data *ts) 449ca96ea86SBastien Nocera { 450492ee52cSDmitry Mastykin u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS]; 451ca96ea86SBastien Nocera int touch_num; 452ca96ea86SBastien Nocera int i; 453ca96ea86SBastien Nocera 454ca96ea86SBastien Nocera touch_num = goodix_ts_read_input_report(ts, point_data); 455ca96ea86SBastien Nocera if (touch_num < 0) 456ca96ea86SBastien Nocera return; 457ca96ea86SBastien Nocera 458492ee52cSDmitry Mastykin goodix_ts_report_key(ts, point_data); 4594a54feeaSSergei A. Trusov 460ca96ea86SBastien Nocera for (i = 0; i < touch_num; i++) 461bd3b8480SYauhen Kharuzhy if (ts->contact_size == 9) 462bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_9b(ts, 463bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 464bd3b8480SYauhen Kharuzhy else 465bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_8b(ts, 466bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 467ca96ea86SBastien Nocera 468ca96ea86SBastien Nocera input_mt_sync_frame(ts->input_dev); 469ca96ea86SBastien Nocera input_sync(ts->input_dev); 470ca96ea86SBastien Nocera } 471ca96ea86SBastien Nocera 472ca96ea86SBastien Nocera /** 473ca96ea86SBastien Nocera * goodix_ts_irq_handler - The IRQ handler 474ca96ea86SBastien Nocera * 475ca96ea86SBastien Nocera * @irq: interrupt number. 476ca96ea86SBastien Nocera * @dev_id: private data pointer. 477ca96ea86SBastien Nocera */ 478ca96ea86SBastien Nocera static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id) 479ca96ea86SBastien Nocera { 480ca96ea86SBastien Nocera struct goodix_ts_data *ts = dev_id; 481ca96ea86SBastien Nocera 482ca96ea86SBastien Nocera goodix_process_events(ts); 483ca96ea86SBastien Nocera 4845d655b35SIrina Tirdea if (goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0) < 0) 485ca96ea86SBastien Nocera dev_err(&ts->client->dev, "I2C write end_cmd error\n"); 486ca96ea86SBastien Nocera 487ca96ea86SBastien Nocera return IRQ_HANDLED; 488ca96ea86SBastien Nocera } 489ca96ea86SBastien Nocera 4905ab09d6aSIrina Tirdea static void goodix_free_irq(struct goodix_ts_data *ts) 4915ab09d6aSIrina Tirdea { 4925ab09d6aSIrina Tirdea devm_free_irq(&ts->client->dev, ts->client->irq, ts); 4935ab09d6aSIrina Tirdea } 4945ab09d6aSIrina Tirdea 4955ab09d6aSIrina Tirdea static int goodix_request_irq(struct goodix_ts_data *ts) 4965ab09d6aSIrina Tirdea { 4975ab09d6aSIrina Tirdea return devm_request_threaded_irq(&ts->client->dev, ts->client->irq, 4985ab09d6aSIrina Tirdea NULL, goodix_ts_irq_handler, 4995ab09d6aSIrina Tirdea ts->irq_flags, ts->client->name, ts); 5005ab09d6aSIrina Tirdea } 5015ab09d6aSIrina Tirdea 5021a67448fSHans de Goede static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len) 50368caf858SIrina Tirdea { 5041a67448fSHans de Goede int i, raw_cfg_len = len - 2; 50568caf858SIrina Tirdea u8 check_sum = 0; 50668caf858SIrina Tirdea 50768caf858SIrina Tirdea for (i = 0; i < raw_cfg_len; i++) 5081a67448fSHans de Goede check_sum += cfg[i]; 50968caf858SIrina Tirdea check_sum = (~check_sum) + 1; 5101a67448fSHans de Goede if (check_sum != cfg[raw_cfg_len]) { 51168caf858SIrina Tirdea dev_err(&ts->client->dev, 51268caf858SIrina Tirdea "The checksum of the config fw is not correct"); 51368caf858SIrina Tirdea return -EINVAL; 51468caf858SIrina Tirdea } 51568caf858SIrina Tirdea 5161a67448fSHans de Goede if (cfg[raw_cfg_len + 1] != 1) { 51768caf858SIrina Tirdea dev_err(&ts->client->dev, 51868caf858SIrina Tirdea "Config fw must have Config_Fresh register set"); 51968caf858SIrina Tirdea return -EINVAL; 52068caf858SIrina Tirdea } 52168caf858SIrina Tirdea 52268caf858SIrina Tirdea return 0; 52368caf858SIrina Tirdea } 52468caf858SIrina Tirdea 525de956caeSHans de Goede static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts) 526de956caeSHans de Goede { 527de956caeSHans de Goede int i, raw_cfg_len = ts->chip->config_len - 2; 528de956caeSHans de Goede u8 check_sum = 0; 529de956caeSHans de Goede 530de956caeSHans de Goede for (i = 0; i < raw_cfg_len; i++) 531de956caeSHans de Goede check_sum += ts->config[i]; 532de956caeSHans de Goede check_sum = (~check_sum) + 1; 533de956caeSHans de Goede 534de956caeSHans de Goede ts->config[raw_cfg_len] = check_sum; 535de956caeSHans de Goede ts->config[raw_cfg_len + 1] = 1; /* Set "config_fresh" bit */ 536de956caeSHans de Goede } 537de956caeSHans de Goede 5381a67448fSHans de Goede static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg, 5391a67448fSHans de Goede int len) 54025309004SMarcin Niestroj { 5411a67448fSHans de Goede int i, raw_cfg_len = len - 3; 54225309004SMarcin Niestroj u16 check_sum = 0; 54325309004SMarcin Niestroj 54425309004SMarcin Niestroj for (i = 0; i < raw_cfg_len; i += 2) 5451a67448fSHans de Goede check_sum += get_unaligned_be16(&cfg[i]); 54625309004SMarcin Niestroj check_sum = (~check_sum) + 1; 5471a67448fSHans de Goede if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) { 54825309004SMarcin Niestroj dev_err(&ts->client->dev, 54925309004SMarcin Niestroj "The checksum of the config fw is not correct"); 55025309004SMarcin Niestroj return -EINVAL; 55125309004SMarcin Niestroj } 55225309004SMarcin Niestroj 5531a67448fSHans de Goede if (cfg[raw_cfg_len + 2] != 1) { 55425309004SMarcin Niestroj dev_err(&ts->client->dev, 55525309004SMarcin Niestroj "Config fw must have Config_Fresh register set"); 55625309004SMarcin Niestroj return -EINVAL; 55725309004SMarcin Niestroj } 55825309004SMarcin Niestroj 55925309004SMarcin Niestroj return 0; 56025309004SMarcin Niestroj } 56125309004SMarcin Niestroj 562de956caeSHans de Goede static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts) 563de956caeSHans de Goede { 564de956caeSHans de Goede int i, raw_cfg_len = ts->chip->config_len - 3; 565de956caeSHans de Goede u16 check_sum = 0; 566de956caeSHans de Goede 567de956caeSHans de Goede for (i = 0; i < raw_cfg_len; i += 2) 568de956caeSHans de Goede check_sum += get_unaligned_be16(&ts->config[i]); 569de956caeSHans de Goede check_sum = (~check_sum) + 1; 570de956caeSHans de Goede 571de956caeSHans de Goede put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]); 572de956caeSHans de Goede ts->config[raw_cfg_len + 2] = 1; /* Set "config_fresh" bit */ 573de956caeSHans de Goede } 574de956caeSHans de Goede 57525309004SMarcin Niestroj /** 57625309004SMarcin Niestroj * goodix_check_cfg - Checks if config fw is valid 57725309004SMarcin Niestroj * 57825309004SMarcin Niestroj * @ts: goodix_ts_data pointer 57925309004SMarcin Niestroj * @cfg: firmware config data 580cb690465SLee Jones * @len: config data length 58125309004SMarcin Niestroj */ 5821a67448fSHans de Goede static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len) 58325309004SMarcin Niestroj { 5841a67448fSHans de Goede if (len < GOODIX_CONFIG_MIN_LENGTH || 5851a67448fSHans de Goede len > GOODIX_CONFIG_MAX_LENGTH) { 58625309004SMarcin Niestroj dev_err(&ts->client->dev, 58725309004SMarcin Niestroj "The length of the config fw is not correct"); 58825309004SMarcin Niestroj return -EINVAL; 58925309004SMarcin Niestroj } 59025309004SMarcin Niestroj 5911a67448fSHans de Goede return ts->chip->check_config(ts, cfg, len); 59225309004SMarcin Niestroj } 59325309004SMarcin Niestroj 59468caf858SIrina Tirdea /** 59568caf858SIrina Tirdea * goodix_send_cfg - Write fw config to device 59668caf858SIrina Tirdea * 59768caf858SIrina Tirdea * @ts: goodix_ts_data pointer 59868caf858SIrina Tirdea * @cfg: config firmware to write to device 599cb690465SLee Jones * @len: config data length 60068caf858SIrina Tirdea */ 6011a67448fSHans de Goede static int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len) 60268caf858SIrina Tirdea { 60368caf858SIrina Tirdea int error; 60468caf858SIrina Tirdea 6051a67448fSHans de Goede error = goodix_check_cfg(ts, cfg, len); 60668caf858SIrina Tirdea if (error) 60768caf858SIrina Tirdea return error; 60868caf858SIrina Tirdea 6091a67448fSHans de Goede error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len); 61068caf858SIrina Tirdea if (error) { 61168caf858SIrina Tirdea dev_err(&ts->client->dev, "Failed to write config data: %d", 61268caf858SIrina Tirdea error); 61368caf858SIrina Tirdea return error; 61468caf858SIrina Tirdea } 61568caf858SIrina Tirdea dev_dbg(&ts->client->dev, "Config sent successfully."); 61668caf858SIrina Tirdea 61768caf858SIrina Tirdea /* Let the firmware reconfigure itself, so sleep for 10ms */ 61868caf858SIrina Tirdea usleep_range(10000, 11000); 61968caf858SIrina Tirdea 62068caf858SIrina Tirdea return 0; 62168caf858SIrina Tirdea } 62268caf858SIrina Tirdea 623c9c20ee3SHans de Goede #ifdef ACPI_GPIO_SUPPORT 624c9c20ee3SHans de Goede static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts) 62549db3997SHans de Goede { 626c9c20ee3SHans de Goede acpi_handle handle = ACPI_HANDLE(&ts->client->dev); 627c5fca485SHans de Goede acpi_status status; 628c5fca485SHans de Goede 629c9c20ee3SHans de Goede status = acpi_evaluate_object(handle, "INTI", NULL, NULL); 630c9c20ee3SHans de Goede return ACPI_SUCCESS(status) ? 0 : -EIO; 631c9c20ee3SHans de Goede } 632c9c20ee3SHans de Goede 633c9c20ee3SHans de Goede static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value) 634c9c20ee3SHans de Goede { 635c9c20ee3SHans de Goede acpi_handle handle = ACPI_HANDLE(&ts->client->dev); 636c9c20ee3SHans de Goede acpi_status status; 637c9c20ee3SHans de Goede 638c9c20ee3SHans de Goede status = acpi_execute_simple_method(handle, "INTO", value); 639c9c20ee3SHans de Goede return ACPI_SUCCESS(status) ? 0 : -EIO; 640c9c20ee3SHans de Goede } 641c9c20ee3SHans de Goede #else 642c9c20ee3SHans de Goede static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts) 643c9c20ee3SHans de Goede { 644c9c20ee3SHans de Goede dev_err(&ts->client->dev, 645c9c20ee3SHans de Goede "%s called on device without ACPI support\n", __func__); 646c9c20ee3SHans de Goede return -EINVAL; 647c9c20ee3SHans de Goede } 648c9c20ee3SHans de Goede 649c9c20ee3SHans de Goede static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value) 650c9c20ee3SHans de Goede { 651c9c20ee3SHans de Goede dev_err(&ts->client->dev, 652c9c20ee3SHans de Goede "%s called on device without ACPI support\n", __func__); 653c9c20ee3SHans de Goede return -EINVAL; 654c9c20ee3SHans de Goede } 655c9c20ee3SHans de Goede #endif 656c9c20ee3SHans de Goede 657c9c20ee3SHans de Goede static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value) 658c9c20ee3SHans de Goede { 65949db3997SHans de Goede switch (ts->irq_pin_access_method) { 66049db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 66149db3997SHans de Goede dev_err(&ts->client->dev, 66249db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 66349db3997SHans de Goede __func__); 66449db3997SHans de Goede return -EINVAL; 66549db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 66649db3997SHans de Goede return gpiod_direction_output(ts->gpiod_int, value); 667a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 668a7d4b171SHans de Goede /* 669a7d4b171SHans de Goede * The IRQ pin triggers on a falling edge, so its gets marked 670a7d4b171SHans de Goede * as active-low, use output_raw to avoid the value inversion. 671a7d4b171SHans de Goede */ 672a7d4b171SHans de Goede return gpiod_direction_output_raw(ts->gpiod_int, value); 673c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 674c9c20ee3SHans de Goede return goodix_pin_acpi_output_method(ts, value); 67549db3997SHans de Goede } 67649db3997SHans de Goede 67749db3997SHans de Goede return -EINVAL; /* Never reached */ 67849db3997SHans de Goede } 67949db3997SHans de Goede 68049db3997SHans de Goede static int goodix_irq_direction_input(struct goodix_ts_data *ts) 68149db3997SHans de Goede { 68249db3997SHans de Goede switch (ts->irq_pin_access_method) { 68349db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 68449db3997SHans de Goede dev_err(&ts->client->dev, 68549db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 68649db3997SHans de Goede __func__); 68749db3997SHans de Goede return -EINVAL; 68849db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 689c9c20ee3SHans de Goede return gpiod_direction_input(ts->gpiod_int); 690a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 69149db3997SHans de Goede return gpiod_direction_input(ts->gpiod_int); 692c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 693c9c20ee3SHans de Goede return goodix_pin_acpi_direction_input(ts); 69449db3997SHans de Goede } 69549db3997SHans de Goede 69649db3997SHans de Goede return -EINVAL; /* Never reached */ 69749db3997SHans de Goede } 69849db3997SHans de Goede 699ec6e1b40SIrina Tirdea static int goodix_int_sync(struct goodix_ts_data *ts) 700ec6e1b40SIrina Tirdea { 701ec6e1b40SIrina Tirdea int error; 702ec6e1b40SIrina Tirdea 70349db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 704ec6e1b40SIrina Tirdea if (error) 705ec6e1b40SIrina Tirdea return error; 706ec6e1b40SIrina Tirdea 707ec6e1b40SIrina Tirdea msleep(50); /* T5: 50ms */ 708ec6e1b40SIrina Tirdea 70949db3997SHans de Goede error = goodix_irq_direction_input(ts); 710ec6e1b40SIrina Tirdea if (error) 711ec6e1b40SIrina Tirdea return error; 712ec6e1b40SIrina Tirdea 713ec6e1b40SIrina Tirdea return 0; 714ec6e1b40SIrina Tirdea } 715ec6e1b40SIrina Tirdea 716ec6e1b40SIrina Tirdea /** 717ec6e1b40SIrina Tirdea * goodix_reset - Reset device during power on 718ec6e1b40SIrina Tirdea * 719ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 720ec6e1b40SIrina Tirdea */ 721ec6e1b40SIrina Tirdea static int goodix_reset(struct goodix_ts_data *ts) 722ec6e1b40SIrina Tirdea { 723ec6e1b40SIrina Tirdea int error; 724ec6e1b40SIrina Tirdea 725ec6e1b40SIrina Tirdea /* begin select I2C slave addr */ 726ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 0); 727ec6e1b40SIrina Tirdea if (error) 728ec6e1b40SIrina Tirdea return error; 729ec6e1b40SIrina Tirdea 730ec6e1b40SIrina Tirdea msleep(20); /* T2: > 10ms */ 731ec6e1b40SIrina Tirdea 732ec6e1b40SIrina Tirdea /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */ 73349db3997SHans de Goede error = goodix_irq_direction_output(ts, ts->client->addr == 0x14); 734ec6e1b40SIrina Tirdea if (error) 735ec6e1b40SIrina Tirdea return error; 736ec6e1b40SIrina Tirdea 737ec6e1b40SIrina Tirdea usleep_range(100, 2000); /* T3: > 100us */ 738ec6e1b40SIrina Tirdea 739ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 1); 740ec6e1b40SIrina Tirdea if (error) 741ec6e1b40SIrina Tirdea return error; 742ec6e1b40SIrina Tirdea 743ec6e1b40SIrina Tirdea usleep_range(6000, 10000); /* T4: > 5ms */ 744ec6e1b40SIrina Tirdea 745ec6e1b40SIrina Tirdea /* end select I2C slave addr */ 746ec6e1b40SIrina Tirdea error = gpiod_direction_input(ts->gpiod_rst); 747ec6e1b40SIrina Tirdea if (error) 748ec6e1b40SIrina Tirdea return error; 749ec6e1b40SIrina Tirdea 750ec6e1b40SIrina Tirdea error = goodix_int_sync(ts); 751ec6e1b40SIrina Tirdea if (error) 752ec6e1b40SIrina Tirdea return error; 753ec6e1b40SIrina Tirdea 754ec6e1b40SIrina Tirdea return 0; 755ec6e1b40SIrina Tirdea } 756ec6e1b40SIrina Tirdea 757c9c20ee3SHans de Goede #ifdef ACPI_GPIO_SUPPORT 75867abd9eeSHans de Goede #include <asm/cpu_device_id.h> 75967abd9eeSHans de Goede #include <asm/intel-family.h> 76067abd9eeSHans de Goede 76167abd9eeSHans de Goede static const struct x86_cpu_id baytrail_cpu_ids[] = { 76267abd9eeSHans de Goede { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT, X86_FEATURE_ANY, }, 76367abd9eeSHans de Goede {} 76467abd9eeSHans de Goede }; 76567abd9eeSHans de Goede 76667abd9eeSHans de Goede static inline bool is_byt(void) 76767abd9eeSHans de Goede { 76867abd9eeSHans de Goede const struct x86_cpu_id *id = x86_match_cpu(baytrail_cpu_ids); 76967abd9eeSHans de Goede 77067abd9eeSHans de Goede return !!id; 77167abd9eeSHans de Goede } 77267abd9eeSHans de Goede 773a7d4b171SHans de Goede static const struct acpi_gpio_params first_gpio = { 0, 0, false }; 774a7d4b171SHans de Goede static const struct acpi_gpio_params second_gpio = { 1, 0, false }; 775a7d4b171SHans de Goede 776a7d4b171SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = { 777a7d4b171SHans de Goede { GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 }, 778a7d4b171SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 }, 779a7d4b171SHans de Goede { }, 780a7d4b171SHans de Goede }; 781a7d4b171SHans de Goede 782a7d4b171SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = { 783a7d4b171SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 }, 784a7d4b171SHans de Goede { GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 }, 785a7d4b171SHans de Goede { }, 786a7d4b171SHans de Goede }; 787a7d4b171SHans de Goede 788c5fca485SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = { 789c5fca485SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 }, 790c5fca485SHans de Goede { }, 791c5fca485SHans de Goede }; 792c5fca485SHans de Goede 793a7d4b171SHans de Goede static int goodix_resource(struct acpi_resource *ares, void *data) 794a7d4b171SHans de Goede { 795a7d4b171SHans de Goede struct goodix_ts_data *ts = data; 796a7d4b171SHans de Goede struct device *dev = &ts->client->dev; 797a7d4b171SHans de Goede struct acpi_resource_gpio *gpio; 798a7d4b171SHans de Goede 799a7d4b171SHans de Goede switch (ares->type) { 800a7d4b171SHans de Goede case ACPI_RESOURCE_TYPE_GPIO: 801a7d4b171SHans de Goede gpio = &ares->data.gpio; 802a7d4b171SHans de Goede if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) { 803a7d4b171SHans de Goede if (ts->gpio_int_idx == -1) { 804a7d4b171SHans de Goede ts->gpio_int_idx = ts->gpio_count; 805a7d4b171SHans de Goede } else { 806a7d4b171SHans de Goede dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n"); 807a7d4b171SHans de Goede ts->gpio_int_idx = -2; 808a7d4b171SHans de Goede } 809a7d4b171SHans de Goede } 810a7d4b171SHans de Goede ts->gpio_count++; 811a7d4b171SHans de Goede break; 812a7d4b171SHans de Goede default: 813a7d4b171SHans de Goede break; 814a7d4b171SHans de Goede } 815a7d4b171SHans de Goede 816a7d4b171SHans de Goede return 0; 817a7d4b171SHans de Goede } 818a7d4b171SHans de Goede 819a7d4b171SHans de Goede /* 820a7d4b171SHans de Goede * This function gets called in case we fail to get the irq GPIO directly 821a7d4b171SHans de Goede * because the ACPI tables lack GPIO-name to APCI _CRS index mappings 822a7d4b171SHans de Goede * (no _DSD UUID daffd814-6eba-4d8c-8a91-bc9bbf4aa301 data). 823a7d4b171SHans de Goede * In that case we add our own mapping and then goodix_get_gpio_config() 824a7d4b171SHans de Goede * retries to get the GPIOs based on the added mapping. 825a7d4b171SHans de Goede */ 826a7d4b171SHans de Goede static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts) 827a7d4b171SHans de Goede { 828a7d4b171SHans de Goede const struct acpi_gpio_mapping *gpio_mapping = NULL; 829a7d4b171SHans de Goede struct device *dev = &ts->client->dev; 830a7d4b171SHans de Goede LIST_HEAD(resources); 831a7d4b171SHans de Goede int ret; 832a7d4b171SHans de Goede 833a7d4b171SHans de Goede ts->gpio_count = 0; 834a7d4b171SHans de Goede ts->gpio_int_idx = -1; 835a7d4b171SHans de Goede ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources, 836a7d4b171SHans de Goede goodix_resource, ts); 837a7d4b171SHans de Goede if (ret < 0) { 838a7d4b171SHans de Goede dev_err(dev, "Error getting ACPI resources: %d\n", ret); 839a7d4b171SHans de Goede return ret; 840a7d4b171SHans de Goede } 841a7d4b171SHans de Goede 842a7d4b171SHans de Goede acpi_dev_free_resource_list(&resources); 843a7d4b171SHans de Goede 844a7d4b171SHans de Goede if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) { 845a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 846a7d4b171SHans de Goede gpio_mapping = acpi_goodix_int_first_gpios; 847a7d4b171SHans de Goede } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) { 848a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 849a7d4b171SHans de Goede gpio_mapping = acpi_goodix_int_last_gpios; 850c5fca485SHans de Goede } else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 && 851c5fca485SHans de Goede acpi_has_method(ACPI_HANDLE(dev), "INTI") && 852c5fca485SHans de Goede acpi_has_method(ACPI_HANDLE(dev), "INTO")) { 853c5fca485SHans de Goede dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n"); 854c5fca485SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD; 855c5fca485SHans de Goede gpio_mapping = acpi_goodix_reset_only_gpios; 85667abd9eeSHans de Goede } else if (is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) { 85767abd9eeSHans de Goede dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n"); 85867abd9eeSHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 85967abd9eeSHans de Goede gpio_mapping = acpi_goodix_int_last_gpios; 860a7d4b171SHans de Goede } else { 861a7d4b171SHans de Goede dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n", 862a7d4b171SHans de Goede ts->gpio_count, ts->gpio_int_idx); 863a7d4b171SHans de Goede return -EINVAL; 864a7d4b171SHans de Goede } 865a7d4b171SHans de Goede 866a7d4b171SHans de Goede return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping); 867a7d4b171SHans de Goede } 868a7d4b171SHans de Goede #else 869a7d4b171SHans de Goede static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts) 870a7d4b171SHans de Goede { 871a7d4b171SHans de Goede return -EINVAL; 872a7d4b171SHans de Goede } 873a7d4b171SHans de Goede #endif /* CONFIG_X86 && CONFIG_ACPI */ 874a7d4b171SHans de Goede 875ec6e1b40SIrina Tirdea /** 876ec6e1b40SIrina Tirdea * goodix_get_gpio_config - Get GPIO config from ACPI/DT 877ec6e1b40SIrina Tirdea * 878ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 879ec6e1b40SIrina Tirdea */ 880ec6e1b40SIrina Tirdea static int goodix_get_gpio_config(struct goodix_ts_data *ts) 881ec6e1b40SIrina Tirdea { 882ec6e1b40SIrina Tirdea int error; 883ec6e1b40SIrina Tirdea struct device *dev; 884ec6e1b40SIrina Tirdea struct gpio_desc *gpiod; 885a7d4b171SHans de Goede bool added_acpi_mappings = false; 886ec6e1b40SIrina Tirdea 887ec6e1b40SIrina Tirdea if (!ts->client) 888ec6e1b40SIrina Tirdea return -EINVAL; 889ec6e1b40SIrina Tirdea dev = &ts->client->dev; 890ec6e1b40SIrina Tirdea 891ae97fb58SJagan Teki ts->avdd28 = devm_regulator_get(dev, "AVDD28"); 892ae97fb58SJagan Teki if (IS_ERR(ts->avdd28)) { 893ae97fb58SJagan Teki error = PTR_ERR(ts->avdd28); 894ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 895ae97fb58SJagan Teki dev_err(dev, 896ae97fb58SJagan Teki "Failed to get AVDD28 regulator: %d\n", error); 897ae97fb58SJagan Teki return error; 898ae97fb58SJagan Teki } 899ae97fb58SJagan Teki 900ae97fb58SJagan Teki ts->vddio = devm_regulator_get(dev, "VDDIO"); 901ae97fb58SJagan Teki if (IS_ERR(ts->vddio)) { 902ae97fb58SJagan Teki error = PTR_ERR(ts->vddio); 903ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 904ae97fb58SJagan Teki dev_err(dev, 905ae97fb58SJagan Teki "Failed to get VDDIO regulator: %d\n", error); 906ae97fb58SJagan Teki return error; 907ae97fb58SJagan Teki } 908ae97fb58SJagan Teki 909a7d4b171SHans de Goede retry_get_irq_gpio: 910ec6e1b40SIrina Tirdea /* Get the interrupt GPIO pin number */ 911ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN); 912ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 913ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 914ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 915ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 916ec6e1b40SIrina Tirdea GOODIX_GPIO_INT_NAME, error); 917ec6e1b40SIrina Tirdea return error; 918ec6e1b40SIrina Tirdea } 919a7d4b171SHans de Goede if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) { 920a7d4b171SHans de Goede added_acpi_mappings = true; 921a7d4b171SHans de Goede if (goodix_add_acpi_gpio_mappings(ts) == 0) 922a7d4b171SHans de Goede goto retry_get_irq_gpio; 923a7d4b171SHans de Goede } 924ec6e1b40SIrina Tirdea 925ec6e1b40SIrina Tirdea ts->gpiod_int = gpiod; 926ec6e1b40SIrina Tirdea 927ec6e1b40SIrina Tirdea /* Get the reset line GPIO pin number */ 928ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, GPIOD_IN); 929ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 930ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 931ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 932ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 933ec6e1b40SIrina Tirdea GOODIX_GPIO_RST_NAME, error); 934ec6e1b40SIrina Tirdea return error; 935ec6e1b40SIrina Tirdea } 936ec6e1b40SIrina Tirdea 937ec6e1b40SIrina Tirdea ts->gpiod_rst = gpiod; 938ec6e1b40SIrina Tirdea 939a7d4b171SHans de Goede switch (ts->irq_pin_access_method) { 940a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 941a7d4b171SHans de Goede /* 942a7d4b171SHans de Goede * We end up here if goodix_add_acpi_gpio_mappings() has 943a7d4b171SHans de Goede * called devm_acpi_dev_add_driver_gpios() because the ACPI 944a7d4b171SHans de Goede * tables did not contain name to index mappings. 945a7d4b171SHans de Goede * Check that we successfully got both GPIOs after we've 946a7d4b171SHans de Goede * added our own acpi_gpio_mapping and if we did not get both 947a7d4b171SHans de Goede * GPIOs reset irq_pin_access_method to IRQ_PIN_ACCESS_NONE. 948a7d4b171SHans de Goede */ 949a7d4b171SHans de Goede if (!ts->gpiod_int || !ts->gpiod_rst) 950a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE; 951a7d4b171SHans de Goede break; 952c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 953c5fca485SHans de Goede if (!ts->gpiod_rst) 954c5fca485SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE; 955c5fca485SHans de Goede break; 956a7d4b171SHans de Goede default: 957e070a97bSHans de Goede if (ts->gpiod_int && ts->gpiod_rst) { 9581921daceSHans de Goede ts->reset_controller_at_probe = true; 959e070a97bSHans de Goede ts->load_cfg_from_disk = true; 96049db3997SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO; 961e070a97bSHans de Goede } 962a7d4b171SHans de Goede } 96349db3997SHans de Goede 964ec6e1b40SIrina Tirdea return 0; 965ec6e1b40SIrina Tirdea } 966ec6e1b40SIrina Tirdea 967ca96ea86SBastien Nocera /** 968ca96ea86SBastien Nocera * goodix_read_config - Read the embedded configuration of the panel 969ca96ea86SBastien Nocera * 970ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 971ca96ea86SBastien Nocera * 972ca96ea86SBastien Nocera * Must be called during probe 973ca96ea86SBastien Nocera */ 974ca96ea86SBastien Nocera static void goodix_read_config(struct goodix_ts_data *ts) 975ca96ea86SBastien Nocera { 976fafef982SMarcin Niestroj int x_max, y_max; 977ca96ea86SBastien Nocera int error; 978ca96ea86SBastien Nocera 97925309004SMarcin Niestroj error = goodix_i2c_read(ts->client, ts->chip->config_addr, 980de956caeSHans de Goede ts->config, ts->chip->config_len); 981ca96ea86SBastien Nocera if (error) { 982fafef982SMarcin Niestroj dev_warn(&ts->client->dev, "Error reading config: %d\n", 983ca96ea86SBastien Nocera error); 984ca96ea86SBastien Nocera ts->int_trigger_type = GOODIX_INT_TRIGGER; 985a7ac7c95SAleksei Mamlin ts->max_touch_num = GOODIX_MAX_CONTACTS; 986ca96ea86SBastien Nocera return; 987ca96ea86SBastien Nocera } 988ca96ea86SBastien Nocera 989de956caeSHans de Goede ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03; 990de956caeSHans de Goede ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f; 9918b5a359cSBastien Nocera 992de956caeSHans de Goede x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]); 993de956caeSHans de Goede y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]); 994fafef982SMarcin Niestroj if (x_max && y_max) { 995fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1); 996fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1); 997ca96ea86SBastien Nocera } 998de956caeSHans de Goede 999de956caeSHans de Goede ts->chip->calc_config_checksum(ts); 100057c80e8eSKarsten Merker } 1001ca96ea86SBastien Nocera 1002ca96ea86SBastien Nocera /** 1003ca96ea86SBastien Nocera * goodix_read_version - Read goodix touchscreen version 1004ca96ea86SBastien Nocera * 100568caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 1006ca96ea86SBastien Nocera */ 100768caf858SIrina Tirdea static int goodix_read_version(struct goodix_ts_data *ts) 1008ca96ea86SBastien Nocera { 1009ca96ea86SBastien Nocera int error; 1010ca96ea86SBastien Nocera u8 buf[6]; 1011cae102e2SIcenowy Zheng char id_str[GOODIX_ID_MAX_LEN + 1]; 1012ca96ea86SBastien Nocera 101368caf858SIrina Tirdea error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf)); 1014ca96ea86SBastien Nocera if (error) { 101568caf858SIrina Tirdea dev_err(&ts->client->dev, "read version failed: %d\n", error); 1016ca96ea86SBastien Nocera return error; 1017ca96ea86SBastien Nocera } 1018ca96ea86SBastien Nocera 1019cae102e2SIcenowy Zheng memcpy(id_str, buf, GOODIX_ID_MAX_LEN); 1020cae102e2SIcenowy Zheng id_str[GOODIX_ID_MAX_LEN] = 0; 1021cae102e2SIcenowy Zheng strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1); 1022e70b0307SIrina Tirdea 102368caf858SIrina Tirdea ts->version = get_unaligned_le16(&buf[4]); 1024ca96ea86SBastien Nocera 1025cae102e2SIcenowy Zheng dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id, 102668caf858SIrina Tirdea ts->version); 1027ca96ea86SBastien Nocera 1028ca96ea86SBastien Nocera return 0; 1029ca96ea86SBastien Nocera } 1030ca96ea86SBastien Nocera 1031ca96ea86SBastien Nocera /** 1032ca96ea86SBastien Nocera * goodix_i2c_test - I2C test function to check if the device answers. 1033ca96ea86SBastien Nocera * 1034ca96ea86SBastien Nocera * @client: the i2c client 1035ca96ea86SBastien Nocera */ 1036ca96ea86SBastien Nocera static int goodix_i2c_test(struct i2c_client *client) 1037ca96ea86SBastien Nocera { 1038ca96ea86SBastien Nocera int retry = 0; 1039ca96ea86SBastien Nocera int error; 1040ca96ea86SBastien Nocera u8 test; 1041ca96ea86SBastien Nocera 1042ca96ea86SBastien Nocera while (retry++ < 2) { 104325309004SMarcin Niestroj error = goodix_i2c_read(client, GOODIX_REG_ID, 1044ca96ea86SBastien Nocera &test, 1); 1045ca96ea86SBastien Nocera if (!error) 1046ca96ea86SBastien Nocera return 0; 1047ca96ea86SBastien Nocera 1048ca96ea86SBastien Nocera dev_err(&client->dev, "i2c test failed attempt %d: %d\n", 1049ca96ea86SBastien Nocera retry, error); 1050ca96ea86SBastien Nocera msleep(20); 1051ca96ea86SBastien Nocera } 1052ca96ea86SBastien Nocera 1053ca96ea86SBastien Nocera return error; 1054ca96ea86SBastien Nocera } 1055ca96ea86SBastien Nocera 1056ca96ea86SBastien Nocera /** 105768caf858SIrina Tirdea * goodix_configure_dev - Finish device initialization 105868caf858SIrina Tirdea * 105968caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 106068caf858SIrina Tirdea * 106168caf858SIrina Tirdea * Must be called from probe to finish initialization of the device. 106268caf858SIrina Tirdea * Contains the common initialization code for both devices that 106368caf858SIrina Tirdea * declare gpio pins and devices that do not. It is either called 106468caf858SIrina Tirdea * directly from probe or from request_firmware_wait callback. 106568caf858SIrina Tirdea */ 106668caf858SIrina Tirdea static int goodix_configure_dev(struct goodix_ts_data *ts) 106768caf858SIrina Tirdea { 106868caf858SIrina Tirdea int error; 1069492ee52cSDmitry Mastykin int i; 107068caf858SIrina Tirdea 1071fafef982SMarcin Niestroj ts->int_trigger_type = GOODIX_INT_TRIGGER; 1072fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 1073ad48cf5eSKarsten Merker 1074fafef982SMarcin Niestroj ts->input_dev = devm_input_allocate_device(&ts->client->dev); 1075fafef982SMarcin Niestroj if (!ts->input_dev) { 1076fafef982SMarcin Niestroj dev_err(&ts->client->dev, "Failed to allocate input device."); 1077fafef982SMarcin Niestroj return -ENOMEM; 1078fafef982SMarcin Niestroj } 1079fafef982SMarcin Niestroj 1080fafef982SMarcin Niestroj ts->input_dev->name = "Goodix Capacitive TouchScreen"; 1081fafef982SMarcin Niestroj ts->input_dev->phys = "input/ts"; 1082fafef982SMarcin Niestroj ts->input_dev->id.bustype = BUS_I2C; 1083fafef982SMarcin Niestroj ts->input_dev->id.vendor = 0x0416; 1084cae102e2SIcenowy Zheng if (kstrtou16(ts->id, 10, &ts->input_dev->id.product)) 1085cae102e2SIcenowy Zheng ts->input_dev->id.product = 0x1001; 1086fafef982SMarcin Niestroj ts->input_dev->id.version = ts->version; 1087fafef982SMarcin Niestroj 1088492ee52cSDmitry Mastykin ts->input_dev->keycode = ts->keymap; 1089492ee52cSDmitry Mastykin ts->input_dev->keycodesize = sizeof(ts->keymap[0]); 1090492ee52cSDmitry Mastykin ts->input_dev->keycodemax = GOODIX_MAX_KEYS; 1091492ee52cSDmitry Mastykin 1092fafef982SMarcin Niestroj /* Capacitive Windows/Home button on some devices */ 1093492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; ++i) { 1094492ee52cSDmitry Mastykin if (i == 0) 1095492ee52cSDmitry Mastykin ts->keymap[i] = KEY_LEFTMETA; 1096492ee52cSDmitry Mastykin else 1097492ee52cSDmitry Mastykin ts->keymap[i] = KEY_F1 + (i - 1); 1098492ee52cSDmitry Mastykin 1099492ee52cSDmitry Mastykin input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]); 1100492ee52cSDmitry Mastykin } 1101fafef982SMarcin Niestroj 1102fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X); 1103fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y); 1104fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); 1105fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); 1106fafef982SMarcin Niestroj 1107fafef982SMarcin Niestroj /* Read configuration and apply touchscreen parameters */ 110868caf858SIrina Tirdea goodix_read_config(ts); 110968caf858SIrina Tirdea 1110fafef982SMarcin Niestroj /* Try overriding touchscreen parameters via device properties */ 1111fafef982SMarcin Niestroj touchscreen_parse_properties(ts->input_dev, true, &ts->prop); 1112fafef982SMarcin Niestroj 1113fafef982SMarcin Niestroj if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) { 1114c1c00aa5SGuido Günther dev_err(&ts->client->dev, 1115c1c00aa5SGuido Günther "Invalid config (%d, %d, %d), using defaults\n", 1116c1c00aa5SGuido Günther ts->prop.max_x, ts->prop.max_y, ts->max_touch_num); 1117fafef982SMarcin Niestroj ts->prop.max_x = GOODIX_MAX_WIDTH - 1; 1118fafef982SMarcin Niestroj ts->prop.max_y = GOODIX_MAX_HEIGHT - 1; 1119fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 1120fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 1121fafef982SMarcin Niestroj ABS_MT_POSITION_X, ts->prop.max_x); 1122fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 1123fafef982SMarcin Niestroj ABS_MT_POSITION_Y, ts->prop.max_y); 1124fafef982SMarcin Niestroj } 1125fafef982SMarcin Niestroj 1126fafef982SMarcin Niestroj if (dmi_check_system(rotated_screen)) { 1127fafef982SMarcin Niestroj ts->prop.invert_x = true; 1128fafef982SMarcin Niestroj ts->prop.invert_y = true; 1129fafef982SMarcin Niestroj dev_dbg(&ts->client->dev, 1130fafef982SMarcin Niestroj "Applying '180 degrees rotated screen' quirk\n"); 1131fafef982SMarcin Niestroj } 1132fafef982SMarcin Niestroj 1133bd3b8480SYauhen Kharuzhy if (dmi_check_system(nine_bytes_report)) { 1134bd3b8480SYauhen Kharuzhy ts->contact_size = 9; 1135bd3b8480SYauhen Kharuzhy 1136bd3b8480SYauhen Kharuzhy dev_dbg(&ts->client->dev, 1137bd3b8480SYauhen Kharuzhy "Non-standard 9-bytes report format quirk\n"); 1138bd3b8480SYauhen Kharuzhy } 1139bd3b8480SYauhen Kharuzhy 11401dd5ddc1SSergei A. Trusov if (dmi_check_system(inverted_x_screen)) { 11411dd5ddc1SSergei A. Trusov ts->prop.invert_x = true; 11421dd5ddc1SSergei A. Trusov dev_dbg(&ts->client->dev, 11431dd5ddc1SSergei A. Trusov "Applying 'inverted x screen' quirk\n"); 11441dd5ddc1SSergei A. Trusov } 11451dd5ddc1SSergei A. Trusov 1146fafef982SMarcin Niestroj error = input_mt_init_slots(ts->input_dev, ts->max_touch_num, 1147fafef982SMarcin Niestroj INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); 1148fafef982SMarcin Niestroj if (error) { 1149fafef982SMarcin Niestroj dev_err(&ts->client->dev, 1150fafef982SMarcin Niestroj "Failed to initialize MT slots: %d", error); 115168caf858SIrina Tirdea return error; 1152fafef982SMarcin Niestroj } 1153fafef982SMarcin Niestroj 1154fafef982SMarcin Niestroj error = input_register_device(ts->input_dev); 1155fafef982SMarcin Niestroj if (error) { 1156fafef982SMarcin Niestroj dev_err(&ts->client->dev, 1157fafef982SMarcin Niestroj "Failed to register input device: %d", error); 1158fafef982SMarcin Niestroj return error; 1159fafef982SMarcin Niestroj } 116068caf858SIrina Tirdea 11615ab09d6aSIrina Tirdea ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT; 11625ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 116368caf858SIrina Tirdea if (error) { 116468caf858SIrina Tirdea dev_err(&ts->client->dev, "request IRQ failed: %d\n", error); 116568caf858SIrina Tirdea return error; 116668caf858SIrina Tirdea } 116768caf858SIrina Tirdea 116868caf858SIrina Tirdea return 0; 116968caf858SIrina Tirdea } 117068caf858SIrina Tirdea 117168caf858SIrina Tirdea /** 117268caf858SIrina Tirdea * goodix_config_cb - Callback to finish device init 117368caf858SIrina Tirdea * 1174cb690465SLee Jones * @cfg: firmware config 1175584da78cSLee Jones * @ctx: our goodix_ts_data pointer 117668caf858SIrina Tirdea * 117768caf858SIrina Tirdea * request_firmware_wait callback that finishes 117868caf858SIrina Tirdea * initialization of the device. 117968caf858SIrina Tirdea */ 118068caf858SIrina Tirdea static void goodix_config_cb(const struct firmware *cfg, void *ctx) 118168caf858SIrina Tirdea { 118268caf858SIrina Tirdea struct goodix_ts_data *ts = ctx; 118368caf858SIrina Tirdea int error; 118468caf858SIrina Tirdea 118568caf858SIrina Tirdea if (cfg) { 118668caf858SIrina Tirdea /* send device configuration to the firmware */ 11871a67448fSHans de Goede error = goodix_send_cfg(ts, cfg->data, cfg->size); 118868caf858SIrina Tirdea if (error) 118968caf858SIrina Tirdea goto err_release_cfg; 119068caf858SIrina Tirdea } 119168caf858SIrina Tirdea 119268caf858SIrina Tirdea goodix_configure_dev(ts); 119368caf858SIrina Tirdea 119468caf858SIrina Tirdea err_release_cfg: 119568caf858SIrina Tirdea release_firmware(cfg); 119668caf858SIrina Tirdea complete_all(&ts->firmware_loading_complete); 119768caf858SIrina Tirdea } 119868caf858SIrina Tirdea 1199ae97fb58SJagan Teki static void goodix_disable_regulators(void *arg) 1200ae97fb58SJagan Teki { 1201ae97fb58SJagan Teki struct goodix_ts_data *ts = arg; 1202ae97fb58SJagan Teki 1203ae97fb58SJagan Teki regulator_disable(ts->vddio); 1204ae97fb58SJagan Teki regulator_disable(ts->avdd28); 1205ae97fb58SJagan Teki } 1206ae97fb58SJagan Teki 1207ca96ea86SBastien Nocera static int goodix_ts_probe(struct i2c_client *client, 1208ca96ea86SBastien Nocera const struct i2c_device_id *id) 1209ca96ea86SBastien Nocera { 1210ca96ea86SBastien Nocera struct goodix_ts_data *ts; 1211ca96ea86SBastien Nocera int error; 1212ca96ea86SBastien Nocera 1213ca96ea86SBastien Nocera dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr); 1214ca96ea86SBastien Nocera 1215ca96ea86SBastien Nocera if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 1216ca96ea86SBastien Nocera dev_err(&client->dev, "I2C check functionality failed.\n"); 1217ca96ea86SBastien Nocera return -ENXIO; 1218ca96ea86SBastien Nocera } 1219ca96ea86SBastien Nocera 1220ca96ea86SBastien Nocera ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); 1221ca96ea86SBastien Nocera if (!ts) 1222ca96ea86SBastien Nocera return -ENOMEM; 1223ca96ea86SBastien Nocera 1224ca96ea86SBastien Nocera ts->client = client; 1225ca96ea86SBastien Nocera i2c_set_clientdata(client, ts); 122668caf858SIrina Tirdea init_completion(&ts->firmware_loading_complete); 1227bd3b8480SYauhen Kharuzhy ts->contact_size = GOODIX_CONTACT_SIZE; 1228ca96ea86SBastien Nocera 1229ec6e1b40SIrina Tirdea error = goodix_get_gpio_config(ts); 1230ec6e1b40SIrina Tirdea if (error) 1231ec6e1b40SIrina Tirdea return error; 1232ec6e1b40SIrina Tirdea 1233ae97fb58SJagan Teki /* power up the controller */ 1234ae97fb58SJagan Teki error = regulator_enable(ts->avdd28); 1235ae97fb58SJagan Teki if (error) { 1236ae97fb58SJagan Teki dev_err(&client->dev, 1237ae97fb58SJagan Teki "Failed to enable AVDD28 regulator: %d\n", 1238ae97fb58SJagan Teki error); 1239ae97fb58SJagan Teki return error; 1240ae97fb58SJagan Teki } 1241ae97fb58SJagan Teki 1242ae97fb58SJagan Teki error = regulator_enable(ts->vddio); 1243ae97fb58SJagan Teki if (error) { 1244ae97fb58SJagan Teki dev_err(&client->dev, 1245ae97fb58SJagan Teki "Failed to enable VDDIO regulator: %d\n", 1246ae97fb58SJagan Teki error); 1247ae97fb58SJagan Teki regulator_disable(ts->avdd28); 1248ae97fb58SJagan Teki return error; 1249ae97fb58SJagan Teki } 1250ae97fb58SJagan Teki 1251ae97fb58SJagan Teki error = devm_add_action_or_reset(&client->dev, 1252ae97fb58SJagan Teki goodix_disable_regulators, ts); 1253ae97fb58SJagan Teki if (error) 1254ae97fb58SJagan Teki return error; 1255ae97fb58SJagan Teki 12569e1f2d70SHans de Goede reset: 12571921daceSHans de Goede if (ts->reset_controller_at_probe) { 1258ec6e1b40SIrina Tirdea /* reset the controller */ 1259ec6e1b40SIrina Tirdea error = goodix_reset(ts); 1260ec6e1b40SIrina Tirdea if (error) { 1261ec6e1b40SIrina Tirdea dev_err(&client->dev, "Controller reset failed.\n"); 1262ec6e1b40SIrina Tirdea return error; 1263ec6e1b40SIrina Tirdea } 1264ec6e1b40SIrina Tirdea } 1265ec6e1b40SIrina Tirdea 1266ca96ea86SBastien Nocera error = goodix_i2c_test(client); 1267ca96ea86SBastien Nocera if (error) { 12689e1f2d70SHans de Goede if (!ts->reset_controller_at_probe && 12699e1f2d70SHans de Goede ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) { 12709e1f2d70SHans de Goede /* Retry after a controller reset */ 12719e1f2d70SHans de Goede ts->reset_controller_at_probe = true; 12729e1f2d70SHans de Goede goto reset; 12739e1f2d70SHans de Goede } 1274ca96ea86SBastien Nocera dev_err(&client->dev, "I2C communication failure: %d\n", error); 1275ca96ea86SBastien Nocera return error; 1276ca96ea86SBastien Nocera } 1277ca96ea86SBastien Nocera 127868caf858SIrina Tirdea error = goodix_read_version(ts); 1279ca96ea86SBastien Nocera if (error) { 1280ca96ea86SBastien Nocera dev_err(&client->dev, "Read version failed.\n"); 1281ca96ea86SBastien Nocera return error; 1282ca96ea86SBastien Nocera } 1283ca96ea86SBastien Nocera 128425309004SMarcin Niestroj ts->chip = goodix_get_chip_data(ts->id); 1285a779fbc6SIrina Tirdea 1286e070a97bSHans de Goede if (ts->load_cfg_from_disk) { 128768caf858SIrina Tirdea /* update device config */ 128868caf858SIrina Tirdea ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL, 1289cae102e2SIcenowy Zheng "goodix_%s_cfg.bin", ts->id); 129068caf858SIrina Tirdea if (!ts->cfg_name) 129168caf858SIrina Tirdea return -ENOMEM; 1292ca96ea86SBastien Nocera 129368caf858SIrina Tirdea error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name, 129468caf858SIrina Tirdea &client->dev, GFP_KERNEL, ts, 129568caf858SIrina Tirdea goodix_config_cb); 1296ca96ea86SBastien Nocera if (error) { 129768caf858SIrina Tirdea dev_err(&client->dev, 129868caf858SIrina Tirdea "Failed to invoke firmware loader: %d\n", 129968caf858SIrina Tirdea error); 1300ca96ea86SBastien Nocera return error; 1301ca96ea86SBastien Nocera } 1302ca96ea86SBastien Nocera 1303ca96ea86SBastien Nocera return 0; 130468caf858SIrina Tirdea } else { 130568caf858SIrina Tirdea error = goodix_configure_dev(ts); 130668caf858SIrina Tirdea if (error) 130768caf858SIrina Tirdea return error; 130868caf858SIrina Tirdea } 130968caf858SIrina Tirdea 131068caf858SIrina Tirdea return 0; 131168caf858SIrina Tirdea } 131268caf858SIrina Tirdea 131368caf858SIrina Tirdea static int goodix_ts_remove(struct i2c_client *client) 131468caf858SIrina Tirdea { 131568caf858SIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 131668caf858SIrina Tirdea 1317e070a97bSHans de Goede if (ts->load_cfg_from_disk) 131868caf858SIrina Tirdea wait_for_completion(&ts->firmware_loading_complete); 131968caf858SIrina Tirdea 132068caf858SIrina Tirdea return 0; 1321ca96ea86SBastien Nocera } 1322ca96ea86SBastien Nocera 13235ab09d6aSIrina Tirdea static int __maybe_unused goodix_suspend(struct device *dev) 13245ab09d6aSIrina Tirdea { 13255ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 13265ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 13275ab09d6aSIrina Tirdea int error; 13285ab09d6aSIrina Tirdea 1329e070a97bSHans de Goede if (ts->load_cfg_from_disk) 1330e070a97bSHans de Goede wait_for_completion(&ts->firmware_loading_complete); 1331e070a97bSHans de Goede 13325ab09d6aSIrina Tirdea /* We need gpio pins to suspend/resume */ 133349db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1334faec44b6SHans de Goede disable_irq(client->irq); 13355ab09d6aSIrina Tirdea return 0; 1336faec44b6SHans de Goede } 13375ab09d6aSIrina Tirdea 13385ab09d6aSIrina Tirdea /* Free IRQ as IRQ pin is used as output in the suspend sequence */ 13395ab09d6aSIrina Tirdea goodix_free_irq(ts); 13405ab09d6aSIrina Tirdea 13415ab09d6aSIrina Tirdea /* Output LOW on the INT pin for 5 ms */ 134249db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 13435ab09d6aSIrina Tirdea if (error) { 13445ab09d6aSIrina Tirdea goodix_request_irq(ts); 13455ab09d6aSIrina Tirdea return error; 13465ab09d6aSIrina Tirdea } 13475ab09d6aSIrina Tirdea 13485ab09d6aSIrina Tirdea usleep_range(5000, 6000); 13495ab09d6aSIrina Tirdea 13505ab09d6aSIrina Tirdea error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND, 13515ab09d6aSIrina Tirdea GOODIX_CMD_SCREEN_OFF); 13525ab09d6aSIrina Tirdea if (error) { 13535ab09d6aSIrina Tirdea dev_err(&ts->client->dev, "Screen off command failed\n"); 135449db3997SHans de Goede goodix_irq_direction_input(ts); 13555ab09d6aSIrina Tirdea goodix_request_irq(ts); 13565ab09d6aSIrina Tirdea return -EAGAIN; 13575ab09d6aSIrina Tirdea } 13585ab09d6aSIrina Tirdea 13595ab09d6aSIrina Tirdea /* 13605ab09d6aSIrina Tirdea * The datasheet specifies that the interval between sending screen-off 13615ab09d6aSIrina Tirdea * command and wake-up should be longer than 58 ms. To avoid waking up 13625ab09d6aSIrina Tirdea * sooner, delay 58ms here. 13635ab09d6aSIrina Tirdea */ 13645ab09d6aSIrina Tirdea msleep(58); 13655ab09d6aSIrina Tirdea return 0; 13665ab09d6aSIrina Tirdea } 13675ab09d6aSIrina Tirdea 13685ab09d6aSIrina Tirdea static int __maybe_unused goodix_resume(struct device *dev) 13695ab09d6aSIrina Tirdea { 13705ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 13715ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 1372273ec6bdSHans de Goede u8 config_ver; 13735ab09d6aSIrina Tirdea int error; 13745ab09d6aSIrina Tirdea 137549db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1376faec44b6SHans de Goede enable_irq(client->irq); 13775ab09d6aSIrina Tirdea return 0; 1378faec44b6SHans de Goede } 13795ab09d6aSIrina Tirdea 13805ab09d6aSIrina Tirdea /* 13815ab09d6aSIrina Tirdea * Exit sleep mode by outputting HIGH level to INT pin 13825ab09d6aSIrina Tirdea * for 2ms~5ms. 13835ab09d6aSIrina Tirdea */ 138449db3997SHans de Goede error = goodix_irq_direction_output(ts, 1); 13855ab09d6aSIrina Tirdea if (error) 13865ab09d6aSIrina Tirdea return error; 13875ab09d6aSIrina Tirdea 13885ab09d6aSIrina Tirdea usleep_range(2000, 5000); 13895ab09d6aSIrina Tirdea 13905ab09d6aSIrina Tirdea error = goodix_int_sync(ts); 13915ab09d6aSIrina Tirdea if (error) 13925ab09d6aSIrina Tirdea return error; 13935ab09d6aSIrina Tirdea 1394273ec6bdSHans de Goede error = goodix_i2c_read(ts->client, ts->chip->config_addr, 1395273ec6bdSHans de Goede &config_ver, 1); 1396273ec6bdSHans de Goede if (error) 1397273ec6bdSHans de Goede dev_warn(dev, "Error reading config version: %d, resetting controller\n", 1398273ec6bdSHans de Goede error); 1399273ec6bdSHans de Goede else if (config_ver != ts->config[0]) 1400273ec6bdSHans de Goede dev_info(dev, "Config version mismatch %d != %d, resetting controller\n", 1401273ec6bdSHans de Goede config_ver, ts->config[0]); 1402273ec6bdSHans de Goede 1403273ec6bdSHans de Goede if (error != 0 || config_ver != ts->config[0]) { 1404273ec6bdSHans de Goede error = goodix_reset(ts); 1405273ec6bdSHans de Goede if (error) { 1406273ec6bdSHans de Goede dev_err(dev, "Controller reset failed.\n"); 1407273ec6bdSHans de Goede return error; 1408273ec6bdSHans de Goede } 1409273ec6bdSHans de Goede 1410273ec6bdSHans de Goede error = goodix_send_cfg(ts, ts->config, ts->chip->config_len); 1411273ec6bdSHans de Goede if (error) 1412273ec6bdSHans de Goede return error; 1413273ec6bdSHans de Goede } 1414273ec6bdSHans de Goede 14155ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 14165ab09d6aSIrina Tirdea if (error) 14175ab09d6aSIrina Tirdea return error; 14185ab09d6aSIrina Tirdea 14195ab09d6aSIrina Tirdea return 0; 14205ab09d6aSIrina Tirdea } 14215ab09d6aSIrina Tirdea 14225ab09d6aSIrina Tirdea static SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume); 14235ab09d6aSIrina Tirdea 1424ca96ea86SBastien Nocera static const struct i2c_device_id goodix_ts_id[] = { 1425ca96ea86SBastien Nocera { "GDIX1001:00", 0 }, 1426ca96ea86SBastien Nocera { } 1427ca96ea86SBastien Nocera }; 14282e9e910eSJavier Martinez Canillas MODULE_DEVICE_TABLE(i2c, goodix_ts_id); 1429ca96ea86SBastien Nocera 1430771d8f1bSAleksei Mamlin #ifdef CONFIG_ACPI 1431ca96ea86SBastien Nocera static const struct acpi_device_id goodix_acpi_match[] = { 1432ca96ea86SBastien Nocera { "GDIX1001", 0 }, 14335ca4d1aeSEthan Lee { "GDIX1002", 0 }, 1434ca96ea86SBastien Nocera { } 1435ca96ea86SBastien Nocera }; 1436ca96ea86SBastien Nocera MODULE_DEVICE_TABLE(acpi, goodix_acpi_match); 1437771d8f1bSAleksei Mamlin #endif 1438771d8f1bSAleksei Mamlin 1439771d8f1bSAleksei Mamlin #ifdef CONFIG_OF 1440771d8f1bSAleksei Mamlin static const struct of_device_id goodix_of_match[] = { 144125309004SMarcin Niestroj { .compatible = "goodix,gt1151" }, 1442a5f50c50SJagan Teki { .compatible = "goodix,gt5663" }, 144384ef1b33SGuido Günther { .compatible = "goodix,gt5688" }, 1444771d8f1bSAleksei Mamlin { .compatible = "goodix,gt911" }, 1445771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9110" }, 1446771d8f1bSAleksei Mamlin { .compatible = "goodix,gt912" }, 1447b9a1c116SYannick Fertre { .compatible = "goodix,gt9147" }, 1448b5e458afSIcenowy Zheng { .compatible = "goodix,gt917s" }, 1449771d8f1bSAleksei Mamlin { .compatible = "goodix,gt927" }, 1450771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9271" }, 1451771d8f1bSAleksei Mamlin { .compatible = "goodix,gt928" }, 1452*2dce6db7SAngeloGioacchino Del Regno { .compatible = "goodix,gt9286" }, 1453771d8f1bSAleksei Mamlin { .compatible = "goodix,gt967" }, 1454771d8f1bSAleksei Mamlin { } 1455771d8f1bSAleksei Mamlin }; 1456771d8f1bSAleksei Mamlin MODULE_DEVICE_TABLE(of, goodix_of_match); 1457771d8f1bSAleksei Mamlin #endif 1458ca96ea86SBastien Nocera 1459ca96ea86SBastien Nocera static struct i2c_driver goodix_ts_driver = { 1460ca96ea86SBastien Nocera .probe = goodix_ts_probe, 146168caf858SIrina Tirdea .remove = goodix_ts_remove, 1462ca96ea86SBastien Nocera .id_table = goodix_ts_id, 1463ca96ea86SBastien Nocera .driver = { 1464ca96ea86SBastien Nocera .name = "Goodix-TS", 1465771d8f1bSAleksei Mamlin .acpi_match_table = ACPI_PTR(goodix_acpi_match), 1466771d8f1bSAleksei Mamlin .of_match_table = of_match_ptr(goodix_of_match), 14675ab09d6aSIrina Tirdea .pm = &goodix_pm_ops, 1468ca96ea86SBastien Nocera }, 1469ca96ea86SBastien Nocera }; 1470ca96ea86SBastien Nocera module_i2c_driver(goodix_ts_driver); 1471ca96ea86SBastien Nocera 1472ca96ea86SBastien Nocera MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 1473ca96ea86SBastien Nocera MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>"); 1474ca96ea86SBastien Nocera MODULE_DESCRIPTION("Goodix touchscreen driver"); 1475ca96ea86SBastien Nocera MODULE_LICENSE("GPL v2"); 1476