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 }, 160cae102e2SIcenowy Zheng 161cae102e2SIcenowy Zheng { .id = "911", .data = >911_chip_data }, 162cae102e2SIcenowy Zheng { .id = "9271", .data = >911_chip_data }, 163cae102e2SIcenowy Zheng { .id = "9110", .data = >911_chip_data }, 164cae102e2SIcenowy Zheng { .id = "927", .data = >911_chip_data }, 165cae102e2SIcenowy Zheng { .id = "928", .data = >911_chip_data }, 166cae102e2SIcenowy Zheng 167cae102e2SIcenowy Zheng { .id = "912", .data = >967_chip_data }, 168b9a1c116SYannick Fertre { .id = "9147", .data = >967_chip_data }, 169cae102e2SIcenowy Zheng { .id = "967", .data = >967_chip_data }, 170cae102e2SIcenowy Zheng { } 171cae102e2SIcenowy Zheng }; 172cae102e2SIcenowy Zheng 173ca96ea86SBastien Nocera static const unsigned long goodix_irq_flags[] = { 174ca96ea86SBastien Nocera IRQ_TYPE_EDGE_RISING, 175ca96ea86SBastien Nocera IRQ_TYPE_EDGE_FALLING, 176ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_LOW, 177ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_HIGH, 178ca96ea86SBastien Nocera }; 179ca96ea86SBastien Nocera 1808b5a359cSBastien Nocera /* 1818b5a359cSBastien Nocera * Those tablets have their coordinates origin at the bottom right 1828b5a359cSBastien Nocera * of the tablet, as if rotated 180 degrees 1838b5a359cSBastien Nocera */ 1848b5a359cSBastien Nocera static const struct dmi_system_id rotated_screen[] = { 1858b5a359cSBastien Nocera #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1868b5a359cSBastien Nocera { 187df5b5e55SHans de Goede .ident = "Teclast X89", 188df5b5e55SHans de Goede .matches = { 189df5b5e55SHans de Goede /* tPAD is too generic, also match on bios date */ 190df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_VENDOR, "TECLAST"), 191df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_NAME, "tPAD"), 192df5b5e55SHans de Goede DMI_MATCH(DMI_BIOS_DATE, "12/19/2014"), 193df5b5e55SHans de Goede }, 194df5b5e55SHans de Goede }, 195df5b5e55SHans de Goede { 1968b5a359cSBastien Nocera .ident = "WinBook TW100", 1978b5a359cSBastien Nocera .matches = { 1988b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 1998b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW100") 2008b5a359cSBastien Nocera } 2018b5a359cSBastien Nocera }, 2028b5a359cSBastien Nocera { 2038b5a359cSBastien Nocera .ident = "WinBook TW700", 2048b5a359cSBastien Nocera .matches = { 2058b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 2068b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW700") 2078b5a359cSBastien Nocera }, 2088b5a359cSBastien Nocera }, 2098b5a359cSBastien Nocera #endif 2108b5a359cSBastien Nocera {} 2118b5a359cSBastien Nocera }; 2128b5a359cSBastien Nocera 213bd3b8480SYauhen Kharuzhy static const struct dmi_system_id nine_bytes_report[] = { 214bd3b8480SYauhen Kharuzhy #if defined(CONFIG_DMI) && defined(CONFIG_X86) 215bd3b8480SYauhen Kharuzhy { 216bd3b8480SYauhen Kharuzhy .ident = "Lenovo YogaBook", 217bd3b8480SYauhen Kharuzhy /* YB1-X91L/F and YB1-X90L/F */ 218bd3b8480SYauhen Kharuzhy .matches = { 219bd3b8480SYauhen Kharuzhy DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9") 220bd3b8480SYauhen Kharuzhy } 221bd3b8480SYauhen Kharuzhy }, 222bd3b8480SYauhen Kharuzhy #endif 223bd3b8480SYauhen Kharuzhy {} 224bd3b8480SYauhen Kharuzhy }; 225bd3b8480SYauhen Kharuzhy 2261dd5ddc1SSergei A. Trusov /* 2271dd5ddc1SSergei A. Trusov * Those tablets have their x coordinate inverted 2281dd5ddc1SSergei A. Trusov */ 2291dd5ddc1SSergei A. Trusov static const struct dmi_system_id inverted_x_screen[] = { 2301dd5ddc1SSergei A. Trusov #if defined(CONFIG_DMI) && defined(CONFIG_X86) 2311dd5ddc1SSergei A. Trusov { 2321dd5ddc1SSergei A. Trusov .ident = "Cube I15-TC", 2331dd5ddc1SSergei A. Trusov .matches = { 2341dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_SYS_VENDOR, "Cube"), 2351dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC") 2361dd5ddc1SSergei A. Trusov }, 2371dd5ddc1SSergei A. Trusov }, 2381dd5ddc1SSergei A. Trusov #endif 2391dd5ddc1SSergei A. Trusov {} 2401dd5ddc1SSergei A. Trusov }; 2411dd5ddc1SSergei A. Trusov 242ca96ea86SBastien Nocera /** 243ca96ea86SBastien Nocera * goodix_i2c_read - read data from a register of the i2c slave device. 244ca96ea86SBastien Nocera * 245ca96ea86SBastien Nocera * @client: i2c device. 246ca96ea86SBastien Nocera * @reg: the register to read from. 247ca96ea86SBastien Nocera * @buf: raw write data buffer. 248ca96ea86SBastien Nocera * @len: length of the buffer to write 249ca96ea86SBastien Nocera */ 250ca96ea86SBastien Nocera static int goodix_i2c_read(struct i2c_client *client, 251ca96ea86SBastien Nocera u16 reg, u8 *buf, int len) 252ca96ea86SBastien Nocera { 253ca96ea86SBastien Nocera struct i2c_msg msgs[2]; 254fafef982SMarcin Niestroj __be16 wbuf = cpu_to_be16(reg); 255ca96ea86SBastien Nocera int ret; 256ca96ea86SBastien Nocera 257ca96ea86SBastien Nocera msgs[0].flags = 0; 258ca96ea86SBastien Nocera msgs[0].addr = client->addr; 259ca96ea86SBastien Nocera msgs[0].len = 2; 260ca96ea86SBastien Nocera msgs[0].buf = (u8 *)&wbuf; 261ca96ea86SBastien Nocera 262ca96ea86SBastien Nocera msgs[1].flags = I2C_M_RD; 263ca96ea86SBastien Nocera msgs[1].addr = client->addr; 264ca96ea86SBastien Nocera msgs[1].len = len; 265ca96ea86SBastien Nocera msgs[1].buf = buf; 266ca96ea86SBastien Nocera 267ca96ea86SBastien Nocera ret = i2c_transfer(client->adapter, msgs, 2); 268ca96ea86SBastien Nocera return ret < 0 ? ret : (ret != ARRAY_SIZE(msgs) ? -EIO : 0); 269ca96ea86SBastien Nocera } 270ca96ea86SBastien Nocera 27168caf858SIrina Tirdea /** 27268caf858SIrina Tirdea * goodix_i2c_write - write data to a register of the i2c slave device. 27368caf858SIrina Tirdea * 27468caf858SIrina Tirdea * @client: i2c device. 27568caf858SIrina Tirdea * @reg: the register to write to. 27668caf858SIrina Tirdea * @buf: raw data buffer to write. 27768caf858SIrina Tirdea * @len: length of the buffer to write 27868caf858SIrina Tirdea */ 27968caf858SIrina Tirdea static int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, 28068caf858SIrina Tirdea unsigned len) 28168caf858SIrina Tirdea { 28268caf858SIrina Tirdea u8 *addr_buf; 28368caf858SIrina Tirdea struct i2c_msg msg; 28468caf858SIrina Tirdea int ret; 28568caf858SIrina Tirdea 28668caf858SIrina Tirdea addr_buf = kmalloc(len + 2, GFP_KERNEL); 28768caf858SIrina Tirdea if (!addr_buf) 28868caf858SIrina Tirdea return -ENOMEM; 28968caf858SIrina Tirdea 29068caf858SIrina Tirdea addr_buf[0] = reg >> 8; 29168caf858SIrina Tirdea addr_buf[1] = reg & 0xFF; 29268caf858SIrina Tirdea memcpy(&addr_buf[2], buf, len); 29368caf858SIrina Tirdea 29468caf858SIrina Tirdea msg.flags = 0; 29568caf858SIrina Tirdea msg.addr = client->addr; 29668caf858SIrina Tirdea msg.buf = addr_buf; 29768caf858SIrina Tirdea msg.len = len + 2; 29868caf858SIrina Tirdea 29968caf858SIrina Tirdea ret = i2c_transfer(client->adapter, &msg, 1); 30068caf858SIrina Tirdea kfree(addr_buf); 30168caf858SIrina Tirdea return ret < 0 ? ret : (ret != 1 ? -EIO : 0); 30268caf858SIrina Tirdea } 30368caf858SIrina Tirdea 3045ab09d6aSIrina Tirdea static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value) 3055ab09d6aSIrina Tirdea { 3065ab09d6aSIrina Tirdea return goodix_i2c_write(client, reg, &value, sizeof(value)); 3075ab09d6aSIrina Tirdea } 3085ab09d6aSIrina Tirdea 309cae102e2SIcenowy Zheng static const struct goodix_chip_data *goodix_get_chip_data(const char *id) 310a779fbc6SIrina Tirdea { 311cae102e2SIcenowy Zheng unsigned int i; 31225309004SMarcin Niestroj 313cae102e2SIcenowy Zheng for (i = 0; goodix_chip_ids[i].id; i++) { 314cae102e2SIcenowy Zheng if (!strcmp(goodix_chip_ids[i].id, id)) 315cae102e2SIcenowy Zheng return goodix_chip_ids[i].data; 316a779fbc6SIrina Tirdea } 317cae102e2SIcenowy Zheng 318cae102e2SIcenowy Zheng return >9x_chip_data; 319a779fbc6SIrina Tirdea } 320a779fbc6SIrina Tirdea 321ca96ea86SBastien Nocera static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data) 322ca96ea86SBastien Nocera { 3239b5db7aaSPaul Cercueil unsigned long max_timeout; 324ca96ea86SBastien Nocera int touch_num; 325ca96ea86SBastien Nocera int error; 326492ee52cSDmitry Mastykin u16 addr = GOODIX_READ_COOR_ADDR; 327492ee52cSDmitry Mastykin /* 328492ee52cSDmitry Mastykin * We are going to read 1-byte header, 329492ee52cSDmitry Mastykin * ts->contact_size * max(1, touch_num) bytes of coordinates 330492ee52cSDmitry Mastykin * and 1-byte footer which contains the touch-key code. 331492ee52cSDmitry Mastykin */ 332492ee52cSDmitry Mastykin const int header_contact_keycode_size = 1 + ts->contact_size + 1; 333ca96ea86SBastien Nocera 3349b5db7aaSPaul Cercueil /* 3359b5db7aaSPaul Cercueil * The 'buffer status' bit, which indicates that the data is valid, is 3369b5db7aaSPaul Cercueil * not set as soon as the interrupt is raised, but slightly after. 3379b5db7aaSPaul Cercueil * This takes around 10 ms to happen, so we poll for 20 ms. 3389b5db7aaSPaul Cercueil */ 3399b5db7aaSPaul Cercueil max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT); 3409b5db7aaSPaul Cercueil do { 341492ee52cSDmitry Mastykin error = goodix_i2c_read(ts->client, addr, data, 342492ee52cSDmitry Mastykin header_contact_keycode_size); 343ca96ea86SBastien Nocera if (error) { 3449b5db7aaSPaul Cercueil dev_err(&ts->client->dev, "I2C transfer error: %d\n", 3459b5db7aaSPaul Cercueil error); 346ca96ea86SBastien Nocera return error; 347ca96ea86SBastien Nocera } 348ca96ea86SBastien Nocera 3499b5db7aaSPaul Cercueil if (data[0] & GOODIX_BUFFER_STATUS_READY) { 350ca96ea86SBastien Nocera touch_num = data[0] & 0x0f; 351a7ac7c95SAleksei Mamlin if (touch_num > ts->max_touch_num) 352ca96ea86SBastien Nocera return -EPROTO; 353ca96ea86SBastien Nocera 354ca96ea86SBastien Nocera if (touch_num > 1) { 355492ee52cSDmitry Mastykin addr += header_contact_keycode_size; 356492ee52cSDmitry Mastykin data += header_contact_keycode_size; 357ca96ea86SBastien Nocera error = goodix_i2c_read(ts->client, 358492ee52cSDmitry Mastykin addr, data, 359bd3b8480SYauhen Kharuzhy ts->contact_size * 3609b5db7aaSPaul Cercueil (touch_num - 1)); 361ca96ea86SBastien Nocera if (error) 362ca96ea86SBastien Nocera return error; 363ca96ea86SBastien Nocera } 364ca96ea86SBastien Nocera 365ca96ea86SBastien Nocera return touch_num; 366ca96ea86SBastien Nocera } 367ca96ea86SBastien Nocera 3689b5db7aaSPaul Cercueil usleep_range(1000, 2000); /* Poll every 1 - 2 ms */ 3699b5db7aaSPaul Cercueil } while (time_before(jiffies, max_timeout)); 3709b5db7aaSPaul Cercueil 3719b5db7aaSPaul Cercueil /* 3729b5db7aaSPaul Cercueil * The Goodix panel will send spurious interrupts after a 3739b5db7aaSPaul Cercueil * 'finger up' event, which will always cause a timeout. 3749b5db7aaSPaul Cercueil */ 37524ef83f6SDmitry Mastykin return -ENOMSG; 3769b5db7aaSPaul Cercueil } 3779b5db7aaSPaul Cercueil 378bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data) 379ca96ea86SBastien Nocera { 380ca96ea86SBastien Nocera int id = coor_data[0] & 0x0F; 381ca96ea86SBastien Nocera int input_x = get_unaligned_le16(&coor_data[1]); 382ca96ea86SBastien Nocera int input_y = get_unaligned_le16(&coor_data[3]); 383ca96ea86SBastien Nocera int input_w = get_unaligned_le16(&coor_data[5]); 384ca96ea86SBastien Nocera 385ca96ea86SBastien Nocera input_mt_slot(ts->input_dev, id); 386ca96ea86SBastien Nocera input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 387fafef982SMarcin Niestroj touchscreen_report_pos(ts->input_dev, &ts->prop, 388fafef982SMarcin Niestroj input_x, input_y, true); 389ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 390ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 391ca96ea86SBastien Nocera } 392ca96ea86SBastien Nocera 393bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data) 394bd3b8480SYauhen Kharuzhy { 395bd3b8480SYauhen Kharuzhy int id = coor_data[1] & 0x0F; 396bd3b8480SYauhen Kharuzhy int input_x = get_unaligned_le16(&coor_data[3]); 397bd3b8480SYauhen Kharuzhy int input_y = get_unaligned_le16(&coor_data[5]); 398bd3b8480SYauhen Kharuzhy int input_w = get_unaligned_le16(&coor_data[7]); 399bd3b8480SYauhen Kharuzhy 400bd3b8480SYauhen Kharuzhy input_mt_slot(ts->input_dev, id); 401bd3b8480SYauhen Kharuzhy input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 402bd3b8480SYauhen Kharuzhy touchscreen_report_pos(ts->input_dev, &ts->prop, 403bd3b8480SYauhen Kharuzhy input_x, input_y, true); 404bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 405bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 406bd3b8480SYauhen Kharuzhy } 407bd3b8480SYauhen Kharuzhy 408492ee52cSDmitry Mastykin static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data) 409492ee52cSDmitry Mastykin { 410492ee52cSDmitry Mastykin int touch_num; 411492ee52cSDmitry Mastykin u8 key_value; 412492ee52cSDmitry Mastykin int i; 413492ee52cSDmitry Mastykin 414492ee52cSDmitry Mastykin if (data[0] & GOODIX_HAVE_KEY) { 415492ee52cSDmitry Mastykin touch_num = data[0] & 0x0f; 416492ee52cSDmitry Mastykin key_value = data[1 + ts->contact_size * touch_num]; 417492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; i++) 418492ee52cSDmitry Mastykin if (key_value & BIT(i)) 419492ee52cSDmitry Mastykin input_report_key(ts->input_dev, 420492ee52cSDmitry Mastykin ts->keymap[i], 1); 421492ee52cSDmitry Mastykin } else { 422492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; i++) 423492ee52cSDmitry Mastykin input_report_key(ts->input_dev, ts->keymap[i], 0); 424492ee52cSDmitry Mastykin } 425492ee52cSDmitry Mastykin } 426492ee52cSDmitry Mastykin 427ca96ea86SBastien Nocera /** 428ca96ea86SBastien Nocera * goodix_process_events - Process incoming events 429ca96ea86SBastien Nocera * 430ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 431ca96ea86SBastien Nocera * 432ca96ea86SBastien Nocera * Called when the IRQ is triggered. Read the current device state, and push 433ca96ea86SBastien Nocera * the input events to the user space. 434ca96ea86SBastien Nocera */ 435ca96ea86SBastien Nocera static void goodix_process_events(struct goodix_ts_data *ts) 436ca96ea86SBastien Nocera { 437492ee52cSDmitry Mastykin u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS]; 438ca96ea86SBastien Nocera int touch_num; 439ca96ea86SBastien Nocera int i; 440ca96ea86SBastien Nocera 441ca96ea86SBastien Nocera touch_num = goodix_ts_read_input_report(ts, point_data); 442ca96ea86SBastien Nocera if (touch_num < 0) 443ca96ea86SBastien Nocera return; 444ca96ea86SBastien Nocera 445492ee52cSDmitry Mastykin goodix_ts_report_key(ts, point_data); 4464a54feeaSSergei A. Trusov 447ca96ea86SBastien Nocera for (i = 0; i < touch_num; i++) 448bd3b8480SYauhen Kharuzhy if (ts->contact_size == 9) 449bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_9b(ts, 450bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 451bd3b8480SYauhen Kharuzhy else 452bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_8b(ts, 453bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 454ca96ea86SBastien Nocera 455ca96ea86SBastien Nocera input_mt_sync_frame(ts->input_dev); 456ca96ea86SBastien Nocera input_sync(ts->input_dev); 457ca96ea86SBastien Nocera } 458ca96ea86SBastien Nocera 459ca96ea86SBastien Nocera /** 460ca96ea86SBastien Nocera * goodix_ts_irq_handler - The IRQ handler 461ca96ea86SBastien Nocera * 462ca96ea86SBastien Nocera * @irq: interrupt number. 463ca96ea86SBastien Nocera * @dev_id: private data pointer. 464ca96ea86SBastien Nocera */ 465ca96ea86SBastien Nocera static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id) 466ca96ea86SBastien Nocera { 467ca96ea86SBastien Nocera struct goodix_ts_data *ts = dev_id; 468ca96ea86SBastien Nocera 469ca96ea86SBastien Nocera goodix_process_events(ts); 470ca96ea86SBastien Nocera 4715d655b35SIrina Tirdea if (goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0) < 0) 472ca96ea86SBastien Nocera dev_err(&ts->client->dev, "I2C write end_cmd error\n"); 473ca96ea86SBastien Nocera 474ca96ea86SBastien Nocera return IRQ_HANDLED; 475ca96ea86SBastien Nocera } 476ca96ea86SBastien Nocera 4775ab09d6aSIrina Tirdea static void goodix_free_irq(struct goodix_ts_data *ts) 4785ab09d6aSIrina Tirdea { 4795ab09d6aSIrina Tirdea devm_free_irq(&ts->client->dev, ts->client->irq, ts); 4805ab09d6aSIrina Tirdea } 4815ab09d6aSIrina Tirdea 4825ab09d6aSIrina Tirdea static int goodix_request_irq(struct goodix_ts_data *ts) 4835ab09d6aSIrina Tirdea { 4845ab09d6aSIrina Tirdea return devm_request_threaded_irq(&ts->client->dev, ts->client->irq, 4855ab09d6aSIrina Tirdea NULL, goodix_ts_irq_handler, 4865ab09d6aSIrina Tirdea ts->irq_flags, ts->client->name, ts); 4875ab09d6aSIrina Tirdea } 4885ab09d6aSIrina Tirdea 4891a67448fSHans de Goede static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len) 49068caf858SIrina Tirdea { 4911a67448fSHans de Goede int i, raw_cfg_len = len - 2; 49268caf858SIrina Tirdea u8 check_sum = 0; 49368caf858SIrina Tirdea 49468caf858SIrina Tirdea for (i = 0; i < raw_cfg_len; i++) 4951a67448fSHans de Goede check_sum += cfg[i]; 49668caf858SIrina Tirdea check_sum = (~check_sum) + 1; 4971a67448fSHans de Goede if (check_sum != cfg[raw_cfg_len]) { 49868caf858SIrina Tirdea dev_err(&ts->client->dev, 49968caf858SIrina Tirdea "The checksum of the config fw is not correct"); 50068caf858SIrina Tirdea return -EINVAL; 50168caf858SIrina Tirdea } 50268caf858SIrina Tirdea 5031a67448fSHans de Goede if (cfg[raw_cfg_len + 1] != 1) { 50468caf858SIrina Tirdea dev_err(&ts->client->dev, 50568caf858SIrina Tirdea "Config fw must have Config_Fresh register set"); 50668caf858SIrina Tirdea return -EINVAL; 50768caf858SIrina Tirdea } 50868caf858SIrina Tirdea 50968caf858SIrina Tirdea return 0; 51068caf858SIrina Tirdea } 51168caf858SIrina Tirdea 512de956caeSHans de Goede static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts) 513de956caeSHans de Goede { 514de956caeSHans de Goede int i, raw_cfg_len = ts->chip->config_len - 2; 515de956caeSHans de Goede u8 check_sum = 0; 516de956caeSHans de Goede 517de956caeSHans de Goede for (i = 0; i < raw_cfg_len; i++) 518de956caeSHans de Goede check_sum += ts->config[i]; 519de956caeSHans de Goede check_sum = (~check_sum) + 1; 520de956caeSHans de Goede 521de956caeSHans de Goede ts->config[raw_cfg_len] = check_sum; 522de956caeSHans de Goede ts->config[raw_cfg_len + 1] = 1; /* Set "config_fresh" bit */ 523de956caeSHans de Goede } 524de956caeSHans de Goede 5251a67448fSHans de Goede static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg, 5261a67448fSHans de Goede int len) 52725309004SMarcin Niestroj { 5281a67448fSHans de Goede int i, raw_cfg_len = len - 3; 52925309004SMarcin Niestroj u16 check_sum = 0; 53025309004SMarcin Niestroj 53125309004SMarcin Niestroj for (i = 0; i < raw_cfg_len; i += 2) 5321a67448fSHans de Goede check_sum += get_unaligned_be16(&cfg[i]); 53325309004SMarcin Niestroj check_sum = (~check_sum) + 1; 5341a67448fSHans de Goede if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) { 53525309004SMarcin Niestroj dev_err(&ts->client->dev, 53625309004SMarcin Niestroj "The checksum of the config fw is not correct"); 53725309004SMarcin Niestroj return -EINVAL; 53825309004SMarcin Niestroj } 53925309004SMarcin Niestroj 5401a67448fSHans de Goede if (cfg[raw_cfg_len + 2] != 1) { 54125309004SMarcin Niestroj dev_err(&ts->client->dev, 54225309004SMarcin Niestroj "Config fw must have Config_Fresh register set"); 54325309004SMarcin Niestroj return -EINVAL; 54425309004SMarcin Niestroj } 54525309004SMarcin Niestroj 54625309004SMarcin Niestroj return 0; 54725309004SMarcin Niestroj } 54825309004SMarcin Niestroj 549de956caeSHans de Goede static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts) 550de956caeSHans de Goede { 551de956caeSHans de Goede int i, raw_cfg_len = ts->chip->config_len - 3; 552de956caeSHans de Goede u16 check_sum = 0; 553de956caeSHans de Goede 554de956caeSHans de Goede for (i = 0; i < raw_cfg_len; i += 2) 555de956caeSHans de Goede check_sum += get_unaligned_be16(&ts->config[i]); 556de956caeSHans de Goede check_sum = (~check_sum) + 1; 557de956caeSHans de Goede 558de956caeSHans de Goede put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]); 559de956caeSHans de Goede ts->config[raw_cfg_len + 2] = 1; /* Set "config_fresh" bit */ 560de956caeSHans de Goede } 561de956caeSHans de Goede 56225309004SMarcin Niestroj /** 56325309004SMarcin Niestroj * goodix_check_cfg - Checks if config fw is valid 56425309004SMarcin Niestroj * 56525309004SMarcin Niestroj * @ts: goodix_ts_data pointer 56625309004SMarcin Niestroj * @cfg: firmware config data 567*cb690465SLee Jones * @len: config data length 56825309004SMarcin Niestroj */ 5691a67448fSHans de Goede static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len) 57025309004SMarcin Niestroj { 5711a67448fSHans de Goede if (len < GOODIX_CONFIG_MIN_LENGTH || 5721a67448fSHans de Goede len > GOODIX_CONFIG_MAX_LENGTH) { 57325309004SMarcin Niestroj dev_err(&ts->client->dev, 57425309004SMarcin Niestroj "The length of the config fw is not correct"); 57525309004SMarcin Niestroj return -EINVAL; 57625309004SMarcin Niestroj } 57725309004SMarcin Niestroj 5781a67448fSHans de Goede return ts->chip->check_config(ts, cfg, len); 57925309004SMarcin Niestroj } 58025309004SMarcin Niestroj 58168caf858SIrina Tirdea /** 58268caf858SIrina Tirdea * goodix_send_cfg - Write fw config to device 58368caf858SIrina Tirdea * 58468caf858SIrina Tirdea * @ts: goodix_ts_data pointer 58568caf858SIrina Tirdea * @cfg: config firmware to write to device 586*cb690465SLee Jones * @len: config data length 58768caf858SIrina Tirdea */ 5881a67448fSHans de Goede static int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len) 58968caf858SIrina Tirdea { 59068caf858SIrina Tirdea int error; 59168caf858SIrina Tirdea 5921a67448fSHans de Goede error = goodix_check_cfg(ts, cfg, len); 59368caf858SIrina Tirdea if (error) 59468caf858SIrina Tirdea return error; 59568caf858SIrina Tirdea 5961a67448fSHans de Goede error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len); 59768caf858SIrina Tirdea if (error) { 59868caf858SIrina Tirdea dev_err(&ts->client->dev, "Failed to write config data: %d", 59968caf858SIrina Tirdea error); 60068caf858SIrina Tirdea return error; 60168caf858SIrina Tirdea } 60268caf858SIrina Tirdea dev_dbg(&ts->client->dev, "Config sent successfully."); 60368caf858SIrina Tirdea 60468caf858SIrina Tirdea /* Let the firmware reconfigure itself, so sleep for 10ms */ 60568caf858SIrina Tirdea usleep_range(10000, 11000); 60668caf858SIrina Tirdea 60768caf858SIrina Tirdea return 0; 60868caf858SIrina Tirdea } 60968caf858SIrina Tirdea 610c9c20ee3SHans de Goede #ifdef ACPI_GPIO_SUPPORT 611c9c20ee3SHans de Goede static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts) 61249db3997SHans de Goede { 613c9c20ee3SHans de Goede acpi_handle handle = ACPI_HANDLE(&ts->client->dev); 614c5fca485SHans de Goede acpi_status status; 615c5fca485SHans de Goede 616c9c20ee3SHans de Goede status = acpi_evaluate_object(handle, "INTI", NULL, NULL); 617c9c20ee3SHans de Goede return ACPI_SUCCESS(status) ? 0 : -EIO; 618c9c20ee3SHans de Goede } 619c9c20ee3SHans de Goede 620c9c20ee3SHans de Goede static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value) 621c9c20ee3SHans de Goede { 622c9c20ee3SHans de Goede acpi_handle handle = ACPI_HANDLE(&ts->client->dev); 623c9c20ee3SHans de Goede acpi_status status; 624c9c20ee3SHans de Goede 625c9c20ee3SHans de Goede status = acpi_execute_simple_method(handle, "INTO", value); 626c9c20ee3SHans de Goede return ACPI_SUCCESS(status) ? 0 : -EIO; 627c9c20ee3SHans de Goede } 628c9c20ee3SHans de Goede #else 629c9c20ee3SHans de Goede static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts) 630c9c20ee3SHans de Goede { 631c9c20ee3SHans de Goede dev_err(&ts->client->dev, 632c9c20ee3SHans de Goede "%s called on device without ACPI support\n", __func__); 633c9c20ee3SHans de Goede return -EINVAL; 634c9c20ee3SHans de Goede } 635c9c20ee3SHans de Goede 636c9c20ee3SHans de Goede static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value) 637c9c20ee3SHans de Goede { 638c9c20ee3SHans de Goede dev_err(&ts->client->dev, 639c9c20ee3SHans de Goede "%s called on device without ACPI support\n", __func__); 640c9c20ee3SHans de Goede return -EINVAL; 641c9c20ee3SHans de Goede } 642c9c20ee3SHans de Goede #endif 643c9c20ee3SHans de Goede 644c9c20ee3SHans de Goede static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value) 645c9c20ee3SHans de Goede { 64649db3997SHans de Goede switch (ts->irq_pin_access_method) { 64749db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 64849db3997SHans de Goede dev_err(&ts->client->dev, 64949db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 65049db3997SHans de Goede __func__); 65149db3997SHans de Goede return -EINVAL; 65249db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 65349db3997SHans de Goede return gpiod_direction_output(ts->gpiod_int, value); 654a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 655a7d4b171SHans de Goede /* 656a7d4b171SHans de Goede * The IRQ pin triggers on a falling edge, so its gets marked 657a7d4b171SHans de Goede * as active-low, use output_raw to avoid the value inversion. 658a7d4b171SHans de Goede */ 659a7d4b171SHans de Goede return gpiod_direction_output_raw(ts->gpiod_int, value); 660c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 661c9c20ee3SHans de Goede return goodix_pin_acpi_output_method(ts, value); 66249db3997SHans de Goede } 66349db3997SHans de Goede 66449db3997SHans de Goede return -EINVAL; /* Never reached */ 66549db3997SHans de Goede } 66649db3997SHans de Goede 66749db3997SHans de Goede static int goodix_irq_direction_input(struct goodix_ts_data *ts) 66849db3997SHans de Goede { 66949db3997SHans de Goede switch (ts->irq_pin_access_method) { 67049db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 67149db3997SHans de Goede dev_err(&ts->client->dev, 67249db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 67349db3997SHans de Goede __func__); 67449db3997SHans de Goede return -EINVAL; 67549db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 676c9c20ee3SHans de Goede return gpiod_direction_input(ts->gpiod_int); 677a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 67849db3997SHans de Goede return gpiod_direction_input(ts->gpiod_int); 679c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 680c9c20ee3SHans de Goede return goodix_pin_acpi_direction_input(ts); 68149db3997SHans de Goede } 68249db3997SHans de Goede 68349db3997SHans de Goede return -EINVAL; /* Never reached */ 68449db3997SHans de Goede } 68549db3997SHans de Goede 686ec6e1b40SIrina Tirdea static int goodix_int_sync(struct goodix_ts_data *ts) 687ec6e1b40SIrina Tirdea { 688ec6e1b40SIrina Tirdea int error; 689ec6e1b40SIrina Tirdea 69049db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 691ec6e1b40SIrina Tirdea if (error) 692ec6e1b40SIrina Tirdea return error; 693ec6e1b40SIrina Tirdea 694ec6e1b40SIrina Tirdea msleep(50); /* T5: 50ms */ 695ec6e1b40SIrina Tirdea 69649db3997SHans de Goede error = goodix_irq_direction_input(ts); 697ec6e1b40SIrina Tirdea if (error) 698ec6e1b40SIrina Tirdea return error; 699ec6e1b40SIrina Tirdea 700ec6e1b40SIrina Tirdea return 0; 701ec6e1b40SIrina Tirdea } 702ec6e1b40SIrina Tirdea 703ec6e1b40SIrina Tirdea /** 704ec6e1b40SIrina Tirdea * goodix_reset - Reset device during power on 705ec6e1b40SIrina Tirdea * 706ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 707ec6e1b40SIrina Tirdea */ 708ec6e1b40SIrina Tirdea static int goodix_reset(struct goodix_ts_data *ts) 709ec6e1b40SIrina Tirdea { 710ec6e1b40SIrina Tirdea int error; 711ec6e1b40SIrina Tirdea 712ec6e1b40SIrina Tirdea /* begin select I2C slave addr */ 713ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 0); 714ec6e1b40SIrina Tirdea if (error) 715ec6e1b40SIrina Tirdea return error; 716ec6e1b40SIrina Tirdea 717ec6e1b40SIrina Tirdea msleep(20); /* T2: > 10ms */ 718ec6e1b40SIrina Tirdea 719ec6e1b40SIrina Tirdea /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */ 72049db3997SHans de Goede error = goodix_irq_direction_output(ts, ts->client->addr == 0x14); 721ec6e1b40SIrina Tirdea if (error) 722ec6e1b40SIrina Tirdea return error; 723ec6e1b40SIrina Tirdea 724ec6e1b40SIrina Tirdea usleep_range(100, 2000); /* T3: > 100us */ 725ec6e1b40SIrina Tirdea 726ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 1); 727ec6e1b40SIrina Tirdea if (error) 728ec6e1b40SIrina Tirdea return error; 729ec6e1b40SIrina Tirdea 730ec6e1b40SIrina Tirdea usleep_range(6000, 10000); /* T4: > 5ms */ 731ec6e1b40SIrina Tirdea 732ec6e1b40SIrina Tirdea /* end select I2C slave addr */ 733ec6e1b40SIrina Tirdea error = gpiod_direction_input(ts->gpiod_rst); 734ec6e1b40SIrina Tirdea if (error) 735ec6e1b40SIrina Tirdea return error; 736ec6e1b40SIrina Tirdea 737ec6e1b40SIrina Tirdea error = goodix_int_sync(ts); 738ec6e1b40SIrina Tirdea if (error) 739ec6e1b40SIrina Tirdea return error; 740ec6e1b40SIrina Tirdea 741ec6e1b40SIrina Tirdea return 0; 742ec6e1b40SIrina Tirdea } 743ec6e1b40SIrina Tirdea 744c9c20ee3SHans de Goede #ifdef ACPI_GPIO_SUPPORT 74567abd9eeSHans de Goede #include <asm/cpu_device_id.h> 74667abd9eeSHans de Goede #include <asm/intel-family.h> 74767abd9eeSHans de Goede 74867abd9eeSHans de Goede static const struct x86_cpu_id baytrail_cpu_ids[] = { 74967abd9eeSHans de Goede { X86_VENDOR_INTEL, 6, INTEL_FAM6_ATOM_SILVERMONT, X86_FEATURE_ANY, }, 75067abd9eeSHans de Goede {} 75167abd9eeSHans de Goede }; 75267abd9eeSHans de Goede 75367abd9eeSHans de Goede static inline bool is_byt(void) 75467abd9eeSHans de Goede { 75567abd9eeSHans de Goede const struct x86_cpu_id *id = x86_match_cpu(baytrail_cpu_ids); 75667abd9eeSHans de Goede 75767abd9eeSHans de Goede return !!id; 75867abd9eeSHans de Goede } 75967abd9eeSHans de Goede 760a7d4b171SHans de Goede static const struct acpi_gpio_params first_gpio = { 0, 0, false }; 761a7d4b171SHans de Goede static const struct acpi_gpio_params second_gpio = { 1, 0, false }; 762a7d4b171SHans de Goede 763a7d4b171SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = { 764a7d4b171SHans de Goede { GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 }, 765a7d4b171SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 }, 766a7d4b171SHans de Goede { }, 767a7d4b171SHans de Goede }; 768a7d4b171SHans de Goede 769a7d4b171SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = { 770a7d4b171SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 }, 771a7d4b171SHans de Goede { GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 }, 772a7d4b171SHans de Goede { }, 773a7d4b171SHans de Goede }; 774a7d4b171SHans de Goede 775c5fca485SHans de Goede static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = { 776c5fca485SHans de Goede { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 }, 777c5fca485SHans de Goede { }, 778c5fca485SHans de Goede }; 779c5fca485SHans de Goede 780a7d4b171SHans de Goede static int goodix_resource(struct acpi_resource *ares, void *data) 781a7d4b171SHans de Goede { 782a7d4b171SHans de Goede struct goodix_ts_data *ts = data; 783a7d4b171SHans de Goede struct device *dev = &ts->client->dev; 784a7d4b171SHans de Goede struct acpi_resource_gpio *gpio; 785a7d4b171SHans de Goede 786a7d4b171SHans de Goede switch (ares->type) { 787a7d4b171SHans de Goede case ACPI_RESOURCE_TYPE_GPIO: 788a7d4b171SHans de Goede gpio = &ares->data.gpio; 789a7d4b171SHans de Goede if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) { 790a7d4b171SHans de Goede if (ts->gpio_int_idx == -1) { 791a7d4b171SHans de Goede ts->gpio_int_idx = ts->gpio_count; 792a7d4b171SHans de Goede } else { 793a7d4b171SHans de Goede dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n"); 794a7d4b171SHans de Goede ts->gpio_int_idx = -2; 795a7d4b171SHans de Goede } 796a7d4b171SHans de Goede } 797a7d4b171SHans de Goede ts->gpio_count++; 798a7d4b171SHans de Goede break; 799a7d4b171SHans de Goede default: 800a7d4b171SHans de Goede break; 801a7d4b171SHans de Goede } 802a7d4b171SHans de Goede 803a7d4b171SHans de Goede return 0; 804a7d4b171SHans de Goede } 805a7d4b171SHans de Goede 806a7d4b171SHans de Goede /* 807a7d4b171SHans de Goede * This function gets called in case we fail to get the irq GPIO directly 808a7d4b171SHans de Goede * because the ACPI tables lack GPIO-name to APCI _CRS index mappings 809a7d4b171SHans de Goede * (no _DSD UUID daffd814-6eba-4d8c-8a91-bc9bbf4aa301 data). 810a7d4b171SHans de Goede * In that case we add our own mapping and then goodix_get_gpio_config() 811a7d4b171SHans de Goede * retries to get the GPIOs based on the added mapping. 812a7d4b171SHans de Goede */ 813a7d4b171SHans de Goede static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts) 814a7d4b171SHans de Goede { 815a7d4b171SHans de Goede const struct acpi_gpio_mapping *gpio_mapping = NULL; 816a7d4b171SHans de Goede struct device *dev = &ts->client->dev; 817a7d4b171SHans de Goede LIST_HEAD(resources); 818a7d4b171SHans de Goede int ret; 819a7d4b171SHans de Goede 820a7d4b171SHans de Goede ts->gpio_count = 0; 821a7d4b171SHans de Goede ts->gpio_int_idx = -1; 822a7d4b171SHans de Goede ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources, 823a7d4b171SHans de Goede goodix_resource, ts); 824a7d4b171SHans de Goede if (ret < 0) { 825a7d4b171SHans de Goede dev_err(dev, "Error getting ACPI resources: %d\n", ret); 826a7d4b171SHans de Goede return ret; 827a7d4b171SHans de Goede } 828a7d4b171SHans de Goede 829a7d4b171SHans de Goede acpi_dev_free_resource_list(&resources); 830a7d4b171SHans de Goede 831a7d4b171SHans de Goede if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) { 832a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 833a7d4b171SHans de Goede gpio_mapping = acpi_goodix_int_first_gpios; 834a7d4b171SHans de Goede } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) { 835a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 836a7d4b171SHans de Goede gpio_mapping = acpi_goodix_int_last_gpios; 837c5fca485SHans de Goede } else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 && 838c5fca485SHans de Goede acpi_has_method(ACPI_HANDLE(dev), "INTI") && 839c5fca485SHans de Goede acpi_has_method(ACPI_HANDLE(dev), "INTO")) { 840c5fca485SHans de Goede dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n"); 841c5fca485SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD; 842c5fca485SHans de Goede gpio_mapping = acpi_goodix_reset_only_gpios; 84367abd9eeSHans de Goede } else if (is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) { 84467abd9eeSHans de Goede dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n"); 84567abd9eeSHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO; 84667abd9eeSHans de Goede gpio_mapping = acpi_goodix_int_last_gpios; 847a7d4b171SHans de Goede } else { 848a7d4b171SHans de Goede dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n", 849a7d4b171SHans de Goede ts->gpio_count, ts->gpio_int_idx); 850a7d4b171SHans de Goede return -EINVAL; 851a7d4b171SHans de Goede } 852a7d4b171SHans de Goede 853a7d4b171SHans de Goede return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping); 854a7d4b171SHans de Goede } 855a7d4b171SHans de Goede #else 856a7d4b171SHans de Goede static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts) 857a7d4b171SHans de Goede { 858a7d4b171SHans de Goede return -EINVAL; 859a7d4b171SHans de Goede } 860a7d4b171SHans de Goede #endif /* CONFIG_X86 && CONFIG_ACPI */ 861a7d4b171SHans de Goede 862ec6e1b40SIrina Tirdea /** 863ec6e1b40SIrina Tirdea * goodix_get_gpio_config - Get GPIO config from ACPI/DT 864ec6e1b40SIrina Tirdea * 865ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 866ec6e1b40SIrina Tirdea */ 867ec6e1b40SIrina Tirdea static int goodix_get_gpio_config(struct goodix_ts_data *ts) 868ec6e1b40SIrina Tirdea { 869ec6e1b40SIrina Tirdea int error; 870ec6e1b40SIrina Tirdea struct device *dev; 871ec6e1b40SIrina Tirdea struct gpio_desc *gpiod; 872a7d4b171SHans de Goede bool added_acpi_mappings = false; 873ec6e1b40SIrina Tirdea 874ec6e1b40SIrina Tirdea if (!ts->client) 875ec6e1b40SIrina Tirdea return -EINVAL; 876ec6e1b40SIrina Tirdea dev = &ts->client->dev; 877ec6e1b40SIrina Tirdea 878ae97fb58SJagan Teki ts->avdd28 = devm_regulator_get(dev, "AVDD28"); 879ae97fb58SJagan Teki if (IS_ERR(ts->avdd28)) { 880ae97fb58SJagan Teki error = PTR_ERR(ts->avdd28); 881ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 882ae97fb58SJagan Teki dev_err(dev, 883ae97fb58SJagan Teki "Failed to get AVDD28 regulator: %d\n", error); 884ae97fb58SJagan Teki return error; 885ae97fb58SJagan Teki } 886ae97fb58SJagan Teki 887ae97fb58SJagan Teki ts->vddio = devm_regulator_get(dev, "VDDIO"); 888ae97fb58SJagan Teki if (IS_ERR(ts->vddio)) { 889ae97fb58SJagan Teki error = PTR_ERR(ts->vddio); 890ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 891ae97fb58SJagan Teki dev_err(dev, 892ae97fb58SJagan Teki "Failed to get VDDIO regulator: %d\n", error); 893ae97fb58SJagan Teki return error; 894ae97fb58SJagan Teki } 895ae97fb58SJagan Teki 896a7d4b171SHans de Goede retry_get_irq_gpio: 897ec6e1b40SIrina Tirdea /* Get the interrupt GPIO pin number */ 898ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN); 899ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 900ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 901ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 902ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 903ec6e1b40SIrina Tirdea GOODIX_GPIO_INT_NAME, error); 904ec6e1b40SIrina Tirdea return error; 905ec6e1b40SIrina Tirdea } 906a7d4b171SHans de Goede if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) { 907a7d4b171SHans de Goede added_acpi_mappings = true; 908a7d4b171SHans de Goede if (goodix_add_acpi_gpio_mappings(ts) == 0) 909a7d4b171SHans de Goede goto retry_get_irq_gpio; 910a7d4b171SHans de Goede } 911ec6e1b40SIrina Tirdea 912ec6e1b40SIrina Tirdea ts->gpiod_int = gpiod; 913ec6e1b40SIrina Tirdea 914ec6e1b40SIrina Tirdea /* Get the reset line GPIO pin number */ 915ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, GPIOD_IN); 916ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 917ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 918ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 919ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 920ec6e1b40SIrina Tirdea GOODIX_GPIO_RST_NAME, error); 921ec6e1b40SIrina Tirdea return error; 922ec6e1b40SIrina Tirdea } 923ec6e1b40SIrina Tirdea 924ec6e1b40SIrina Tirdea ts->gpiod_rst = gpiod; 925ec6e1b40SIrina Tirdea 926a7d4b171SHans de Goede switch (ts->irq_pin_access_method) { 927a7d4b171SHans de Goede case IRQ_PIN_ACCESS_ACPI_GPIO: 928a7d4b171SHans de Goede /* 929a7d4b171SHans de Goede * We end up here if goodix_add_acpi_gpio_mappings() has 930a7d4b171SHans de Goede * called devm_acpi_dev_add_driver_gpios() because the ACPI 931a7d4b171SHans de Goede * tables did not contain name to index mappings. 932a7d4b171SHans de Goede * Check that we successfully got both GPIOs after we've 933a7d4b171SHans de Goede * added our own acpi_gpio_mapping and if we did not get both 934a7d4b171SHans de Goede * GPIOs reset irq_pin_access_method to IRQ_PIN_ACCESS_NONE. 935a7d4b171SHans de Goede */ 936a7d4b171SHans de Goede if (!ts->gpiod_int || !ts->gpiod_rst) 937a7d4b171SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE; 938a7d4b171SHans de Goede break; 939c5fca485SHans de Goede case IRQ_PIN_ACCESS_ACPI_METHOD: 940c5fca485SHans de Goede if (!ts->gpiod_rst) 941c5fca485SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE; 942c5fca485SHans de Goede break; 943a7d4b171SHans de Goede default: 944e070a97bSHans de Goede if (ts->gpiod_int && ts->gpiod_rst) { 9451921daceSHans de Goede ts->reset_controller_at_probe = true; 946e070a97bSHans de Goede ts->load_cfg_from_disk = true; 94749db3997SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO; 948e070a97bSHans de Goede } 949a7d4b171SHans de Goede } 95049db3997SHans de Goede 951ec6e1b40SIrina Tirdea return 0; 952ec6e1b40SIrina Tirdea } 953ec6e1b40SIrina Tirdea 954ca96ea86SBastien Nocera /** 955ca96ea86SBastien Nocera * goodix_read_config - Read the embedded configuration of the panel 956ca96ea86SBastien Nocera * 957ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 958ca96ea86SBastien Nocera * 959ca96ea86SBastien Nocera * Must be called during probe 960ca96ea86SBastien Nocera */ 961ca96ea86SBastien Nocera static void goodix_read_config(struct goodix_ts_data *ts) 962ca96ea86SBastien Nocera { 963fafef982SMarcin Niestroj int x_max, y_max; 964ca96ea86SBastien Nocera int error; 965ca96ea86SBastien Nocera 96625309004SMarcin Niestroj error = goodix_i2c_read(ts->client, ts->chip->config_addr, 967de956caeSHans de Goede ts->config, ts->chip->config_len); 968ca96ea86SBastien Nocera if (error) { 969fafef982SMarcin Niestroj dev_warn(&ts->client->dev, "Error reading config: %d\n", 970ca96ea86SBastien Nocera error); 971ca96ea86SBastien Nocera ts->int_trigger_type = GOODIX_INT_TRIGGER; 972a7ac7c95SAleksei Mamlin ts->max_touch_num = GOODIX_MAX_CONTACTS; 973ca96ea86SBastien Nocera return; 974ca96ea86SBastien Nocera } 975ca96ea86SBastien Nocera 976de956caeSHans de Goede ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03; 977de956caeSHans de Goede ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f; 9788b5a359cSBastien Nocera 979de956caeSHans de Goede x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]); 980de956caeSHans de Goede y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]); 981fafef982SMarcin Niestroj if (x_max && y_max) { 982fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1); 983fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1); 984ca96ea86SBastien Nocera } 985de956caeSHans de Goede 986de956caeSHans de Goede ts->chip->calc_config_checksum(ts); 98757c80e8eSKarsten Merker } 988ca96ea86SBastien Nocera 989ca96ea86SBastien Nocera /** 990ca96ea86SBastien Nocera * goodix_read_version - Read goodix touchscreen version 991ca96ea86SBastien Nocera * 99268caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 993ca96ea86SBastien Nocera */ 99468caf858SIrina Tirdea static int goodix_read_version(struct goodix_ts_data *ts) 995ca96ea86SBastien Nocera { 996ca96ea86SBastien Nocera int error; 997ca96ea86SBastien Nocera u8 buf[6]; 998cae102e2SIcenowy Zheng char id_str[GOODIX_ID_MAX_LEN + 1]; 999ca96ea86SBastien Nocera 100068caf858SIrina Tirdea error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf)); 1001ca96ea86SBastien Nocera if (error) { 100268caf858SIrina Tirdea dev_err(&ts->client->dev, "read version failed: %d\n", error); 1003ca96ea86SBastien Nocera return error; 1004ca96ea86SBastien Nocera } 1005ca96ea86SBastien Nocera 1006cae102e2SIcenowy Zheng memcpy(id_str, buf, GOODIX_ID_MAX_LEN); 1007cae102e2SIcenowy Zheng id_str[GOODIX_ID_MAX_LEN] = 0; 1008cae102e2SIcenowy Zheng strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1); 1009e70b0307SIrina Tirdea 101068caf858SIrina Tirdea ts->version = get_unaligned_le16(&buf[4]); 1011ca96ea86SBastien Nocera 1012cae102e2SIcenowy Zheng dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id, 101368caf858SIrina Tirdea ts->version); 1014ca96ea86SBastien Nocera 1015ca96ea86SBastien Nocera return 0; 1016ca96ea86SBastien Nocera } 1017ca96ea86SBastien Nocera 1018ca96ea86SBastien Nocera /** 1019ca96ea86SBastien Nocera * goodix_i2c_test - I2C test function to check if the device answers. 1020ca96ea86SBastien Nocera * 1021ca96ea86SBastien Nocera * @client: the i2c client 1022ca96ea86SBastien Nocera */ 1023ca96ea86SBastien Nocera static int goodix_i2c_test(struct i2c_client *client) 1024ca96ea86SBastien Nocera { 1025ca96ea86SBastien Nocera int retry = 0; 1026ca96ea86SBastien Nocera int error; 1027ca96ea86SBastien Nocera u8 test; 1028ca96ea86SBastien Nocera 1029ca96ea86SBastien Nocera while (retry++ < 2) { 103025309004SMarcin Niestroj error = goodix_i2c_read(client, GOODIX_REG_ID, 1031ca96ea86SBastien Nocera &test, 1); 1032ca96ea86SBastien Nocera if (!error) 1033ca96ea86SBastien Nocera return 0; 1034ca96ea86SBastien Nocera 1035ca96ea86SBastien Nocera dev_err(&client->dev, "i2c test failed attempt %d: %d\n", 1036ca96ea86SBastien Nocera retry, error); 1037ca96ea86SBastien Nocera msleep(20); 1038ca96ea86SBastien Nocera } 1039ca96ea86SBastien Nocera 1040ca96ea86SBastien Nocera return error; 1041ca96ea86SBastien Nocera } 1042ca96ea86SBastien Nocera 1043ca96ea86SBastien Nocera /** 104468caf858SIrina Tirdea * goodix_configure_dev - Finish device initialization 104568caf858SIrina Tirdea * 104668caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 104768caf858SIrina Tirdea * 104868caf858SIrina Tirdea * Must be called from probe to finish initialization of the device. 104968caf858SIrina Tirdea * Contains the common initialization code for both devices that 105068caf858SIrina Tirdea * declare gpio pins and devices that do not. It is either called 105168caf858SIrina Tirdea * directly from probe or from request_firmware_wait callback. 105268caf858SIrina Tirdea */ 105368caf858SIrina Tirdea static int goodix_configure_dev(struct goodix_ts_data *ts) 105468caf858SIrina Tirdea { 105568caf858SIrina Tirdea int error; 1056492ee52cSDmitry Mastykin int i; 105768caf858SIrina Tirdea 1058fafef982SMarcin Niestroj ts->int_trigger_type = GOODIX_INT_TRIGGER; 1059fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 1060ad48cf5eSKarsten Merker 1061fafef982SMarcin Niestroj ts->input_dev = devm_input_allocate_device(&ts->client->dev); 1062fafef982SMarcin Niestroj if (!ts->input_dev) { 1063fafef982SMarcin Niestroj dev_err(&ts->client->dev, "Failed to allocate input device."); 1064fafef982SMarcin Niestroj return -ENOMEM; 1065fafef982SMarcin Niestroj } 1066fafef982SMarcin Niestroj 1067fafef982SMarcin Niestroj ts->input_dev->name = "Goodix Capacitive TouchScreen"; 1068fafef982SMarcin Niestroj ts->input_dev->phys = "input/ts"; 1069fafef982SMarcin Niestroj ts->input_dev->id.bustype = BUS_I2C; 1070fafef982SMarcin Niestroj ts->input_dev->id.vendor = 0x0416; 1071cae102e2SIcenowy Zheng if (kstrtou16(ts->id, 10, &ts->input_dev->id.product)) 1072cae102e2SIcenowy Zheng ts->input_dev->id.product = 0x1001; 1073fafef982SMarcin Niestroj ts->input_dev->id.version = ts->version; 1074fafef982SMarcin Niestroj 1075492ee52cSDmitry Mastykin ts->input_dev->keycode = ts->keymap; 1076492ee52cSDmitry Mastykin ts->input_dev->keycodesize = sizeof(ts->keymap[0]); 1077492ee52cSDmitry Mastykin ts->input_dev->keycodemax = GOODIX_MAX_KEYS; 1078492ee52cSDmitry Mastykin 1079fafef982SMarcin Niestroj /* Capacitive Windows/Home button on some devices */ 1080492ee52cSDmitry Mastykin for (i = 0; i < GOODIX_MAX_KEYS; ++i) { 1081492ee52cSDmitry Mastykin if (i == 0) 1082492ee52cSDmitry Mastykin ts->keymap[i] = KEY_LEFTMETA; 1083492ee52cSDmitry Mastykin else 1084492ee52cSDmitry Mastykin ts->keymap[i] = KEY_F1 + (i - 1); 1085492ee52cSDmitry Mastykin 1086492ee52cSDmitry Mastykin input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]); 1087492ee52cSDmitry Mastykin } 1088fafef982SMarcin Niestroj 1089fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X); 1090fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y); 1091fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); 1092fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); 1093fafef982SMarcin Niestroj 1094fafef982SMarcin Niestroj /* Read configuration and apply touchscreen parameters */ 109568caf858SIrina Tirdea goodix_read_config(ts); 109668caf858SIrina Tirdea 1097fafef982SMarcin Niestroj /* Try overriding touchscreen parameters via device properties */ 1098fafef982SMarcin Niestroj touchscreen_parse_properties(ts->input_dev, true, &ts->prop); 1099fafef982SMarcin Niestroj 1100fafef982SMarcin Niestroj if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) { 1101c1c00aa5SGuido Günther dev_err(&ts->client->dev, 1102c1c00aa5SGuido Günther "Invalid config (%d, %d, %d), using defaults\n", 1103c1c00aa5SGuido Günther ts->prop.max_x, ts->prop.max_y, ts->max_touch_num); 1104fafef982SMarcin Niestroj ts->prop.max_x = GOODIX_MAX_WIDTH - 1; 1105fafef982SMarcin Niestroj ts->prop.max_y = GOODIX_MAX_HEIGHT - 1; 1106fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 1107fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 1108fafef982SMarcin Niestroj ABS_MT_POSITION_X, ts->prop.max_x); 1109fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 1110fafef982SMarcin Niestroj ABS_MT_POSITION_Y, ts->prop.max_y); 1111fafef982SMarcin Niestroj } 1112fafef982SMarcin Niestroj 1113fafef982SMarcin Niestroj if (dmi_check_system(rotated_screen)) { 1114fafef982SMarcin Niestroj ts->prop.invert_x = true; 1115fafef982SMarcin Niestroj ts->prop.invert_y = true; 1116fafef982SMarcin Niestroj dev_dbg(&ts->client->dev, 1117fafef982SMarcin Niestroj "Applying '180 degrees rotated screen' quirk\n"); 1118fafef982SMarcin Niestroj } 1119fafef982SMarcin Niestroj 1120bd3b8480SYauhen Kharuzhy if (dmi_check_system(nine_bytes_report)) { 1121bd3b8480SYauhen Kharuzhy ts->contact_size = 9; 1122bd3b8480SYauhen Kharuzhy 1123bd3b8480SYauhen Kharuzhy dev_dbg(&ts->client->dev, 1124bd3b8480SYauhen Kharuzhy "Non-standard 9-bytes report format quirk\n"); 1125bd3b8480SYauhen Kharuzhy } 1126bd3b8480SYauhen Kharuzhy 11271dd5ddc1SSergei A. Trusov if (dmi_check_system(inverted_x_screen)) { 11281dd5ddc1SSergei A. Trusov ts->prop.invert_x = true; 11291dd5ddc1SSergei A. Trusov dev_dbg(&ts->client->dev, 11301dd5ddc1SSergei A. Trusov "Applying 'inverted x screen' quirk\n"); 11311dd5ddc1SSergei A. Trusov } 11321dd5ddc1SSergei A. Trusov 1133fafef982SMarcin Niestroj error = input_mt_init_slots(ts->input_dev, ts->max_touch_num, 1134fafef982SMarcin Niestroj INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); 1135fafef982SMarcin Niestroj if (error) { 1136fafef982SMarcin Niestroj dev_err(&ts->client->dev, 1137fafef982SMarcin Niestroj "Failed to initialize MT slots: %d", error); 113868caf858SIrina Tirdea return error; 1139fafef982SMarcin Niestroj } 1140fafef982SMarcin Niestroj 1141fafef982SMarcin Niestroj error = input_register_device(ts->input_dev); 1142fafef982SMarcin Niestroj if (error) { 1143fafef982SMarcin Niestroj dev_err(&ts->client->dev, 1144fafef982SMarcin Niestroj "Failed to register input device: %d", error); 1145fafef982SMarcin Niestroj return error; 1146fafef982SMarcin Niestroj } 114768caf858SIrina Tirdea 11485ab09d6aSIrina Tirdea ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT; 11495ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 115068caf858SIrina Tirdea if (error) { 115168caf858SIrina Tirdea dev_err(&ts->client->dev, "request IRQ failed: %d\n", error); 115268caf858SIrina Tirdea return error; 115368caf858SIrina Tirdea } 115468caf858SIrina Tirdea 115568caf858SIrina Tirdea return 0; 115668caf858SIrina Tirdea } 115768caf858SIrina Tirdea 115868caf858SIrina Tirdea /** 115968caf858SIrina Tirdea * goodix_config_cb - Callback to finish device init 116068caf858SIrina Tirdea * 1161*cb690465SLee Jones * @cfg: firmware config 116268caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 116368caf858SIrina Tirdea * 116468caf858SIrina Tirdea * request_firmware_wait callback that finishes 116568caf858SIrina Tirdea * initialization of the device. 116668caf858SIrina Tirdea */ 116768caf858SIrina Tirdea static void goodix_config_cb(const struct firmware *cfg, void *ctx) 116868caf858SIrina Tirdea { 116968caf858SIrina Tirdea struct goodix_ts_data *ts = ctx; 117068caf858SIrina Tirdea int error; 117168caf858SIrina Tirdea 117268caf858SIrina Tirdea if (cfg) { 117368caf858SIrina Tirdea /* send device configuration to the firmware */ 11741a67448fSHans de Goede error = goodix_send_cfg(ts, cfg->data, cfg->size); 117568caf858SIrina Tirdea if (error) 117668caf858SIrina Tirdea goto err_release_cfg; 117768caf858SIrina Tirdea } 117868caf858SIrina Tirdea 117968caf858SIrina Tirdea goodix_configure_dev(ts); 118068caf858SIrina Tirdea 118168caf858SIrina Tirdea err_release_cfg: 118268caf858SIrina Tirdea release_firmware(cfg); 118368caf858SIrina Tirdea complete_all(&ts->firmware_loading_complete); 118468caf858SIrina Tirdea } 118568caf858SIrina Tirdea 1186ae97fb58SJagan Teki static void goodix_disable_regulators(void *arg) 1187ae97fb58SJagan Teki { 1188ae97fb58SJagan Teki struct goodix_ts_data *ts = arg; 1189ae97fb58SJagan Teki 1190ae97fb58SJagan Teki regulator_disable(ts->vddio); 1191ae97fb58SJagan Teki regulator_disable(ts->avdd28); 1192ae97fb58SJagan Teki } 1193ae97fb58SJagan Teki 1194ca96ea86SBastien Nocera static int goodix_ts_probe(struct i2c_client *client, 1195ca96ea86SBastien Nocera const struct i2c_device_id *id) 1196ca96ea86SBastien Nocera { 1197ca96ea86SBastien Nocera struct goodix_ts_data *ts; 1198ca96ea86SBastien Nocera int error; 1199ca96ea86SBastien Nocera 1200ca96ea86SBastien Nocera dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr); 1201ca96ea86SBastien Nocera 1202ca96ea86SBastien Nocera if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 1203ca96ea86SBastien Nocera dev_err(&client->dev, "I2C check functionality failed.\n"); 1204ca96ea86SBastien Nocera return -ENXIO; 1205ca96ea86SBastien Nocera } 1206ca96ea86SBastien Nocera 1207ca96ea86SBastien Nocera ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); 1208ca96ea86SBastien Nocera if (!ts) 1209ca96ea86SBastien Nocera return -ENOMEM; 1210ca96ea86SBastien Nocera 1211ca96ea86SBastien Nocera ts->client = client; 1212ca96ea86SBastien Nocera i2c_set_clientdata(client, ts); 121368caf858SIrina Tirdea init_completion(&ts->firmware_loading_complete); 1214bd3b8480SYauhen Kharuzhy ts->contact_size = GOODIX_CONTACT_SIZE; 1215ca96ea86SBastien Nocera 1216ec6e1b40SIrina Tirdea error = goodix_get_gpio_config(ts); 1217ec6e1b40SIrina Tirdea if (error) 1218ec6e1b40SIrina Tirdea return error; 1219ec6e1b40SIrina Tirdea 1220ae97fb58SJagan Teki /* power up the controller */ 1221ae97fb58SJagan Teki error = regulator_enable(ts->avdd28); 1222ae97fb58SJagan Teki if (error) { 1223ae97fb58SJagan Teki dev_err(&client->dev, 1224ae97fb58SJagan Teki "Failed to enable AVDD28 regulator: %d\n", 1225ae97fb58SJagan Teki error); 1226ae97fb58SJagan Teki return error; 1227ae97fb58SJagan Teki } 1228ae97fb58SJagan Teki 1229ae97fb58SJagan Teki error = regulator_enable(ts->vddio); 1230ae97fb58SJagan Teki if (error) { 1231ae97fb58SJagan Teki dev_err(&client->dev, 1232ae97fb58SJagan Teki "Failed to enable VDDIO regulator: %d\n", 1233ae97fb58SJagan Teki error); 1234ae97fb58SJagan Teki regulator_disable(ts->avdd28); 1235ae97fb58SJagan Teki return error; 1236ae97fb58SJagan Teki } 1237ae97fb58SJagan Teki 1238ae97fb58SJagan Teki error = devm_add_action_or_reset(&client->dev, 1239ae97fb58SJagan Teki goodix_disable_regulators, ts); 1240ae97fb58SJagan Teki if (error) 1241ae97fb58SJagan Teki return error; 1242ae97fb58SJagan Teki 12439e1f2d70SHans de Goede reset: 12441921daceSHans de Goede if (ts->reset_controller_at_probe) { 1245ec6e1b40SIrina Tirdea /* reset the controller */ 1246ec6e1b40SIrina Tirdea error = goodix_reset(ts); 1247ec6e1b40SIrina Tirdea if (error) { 1248ec6e1b40SIrina Tirdea dev_err(&client->dev, "Controller reset failed.\n"); 1249ec6e1b40SIrina Tirdea return error; 1250ec6e1b40SIrina Tirdea } 1251ec6e1b40SIrina Tirdea } 1252ec6e1b40SIrina Tirdea 1253ca96ea86SBastien Nocera error = goodix_i2c_test(client); 1254ca96ea86SBastien Nocera if (error) { 12559e1f2d70SHans de Goede if (!ts->reset_controller_at_probe && 12569e1f2d70SHans de Goede ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) { 12579e1f2d70SHans de Goede /* Retry after a controller reset */ 12589e1f2d70SHans de Goede ts->reset_controller_at_probe = true; 12599e1f2d70SHans de Goede goto reset; 12609e1f2d70SHans de Goede } 1261ca96ea86SBastien Nocera dev_err(&client->dev, "I2C communication failure: %d\n", error); 1262ca96ea86SBastien Nocera return error; 1263ca96ea86SBastien Nocera } 1264ca96ea86SBastien Nocera 126568caf858SIrina Tirdea error = goodix_read_version(ts); 1266ca96ea86SBastien Nocera if (error) { 1267ca96ea86SBastien Nocera dev_err(&client->dev, "Read version failed.\n"); 1268ca96ea86SBastien Nocera return error; 1269ca96ea86SBastien Nocera } 1270ca96ea86SBastien Nocera 127125309004SMarcin Niestroj ts->chip = goodix_get_chip_data(ts->id); 1272a779fbc6SIrina Tirdea 1273e070a97bSHans de Goede if (ts->load_cfg_from_disk) { 127468caf858SIrina Tirdea /* update device config */ 127568caf858SIrina Tirdea ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL, 1276cae102e2SIcenowy Zheng "goodix_%s_cfg.bin", ts->id); 127768caf858SIrina Tirdea if (!ts->cfg_name) 127868caf858SIrina Tirdea return -ENOMEM; 1279ca96ea86SBastien Nocera 128068caf858SIrina Tirdea error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name, 128168caf858SIrina Tirdea &client->dev, GFP_KERNEL, ts, 128268caf858SIrina Tirdea goodix_config_cb); 1283ca96ea86SBastien Nocera if (error) { 128468caf858SIrina Tirdea dev_err(&client->dev, 128568caf858SIrina Tirdea "Failed to invoke firmware loader: %d\n", 128668caf858SIrina Tirdea error); 1287ca96ea86SBastien Nocera return error; 1288ca96ea86SBastien Nocera } 1289ca96ea86SBastien Nocera 1290ca96ea86SBastien Nocera return 0; 129168caf858SIrina Tirdea } else { 129268caf858SIrina Tirdea error = goodix_configure_dev(ts); 129368caf858SIrina Tirdea if (error) 129468caf858SIrina Tirdea return error; 129568caf858SIrina Tirdea } 129668caf858SIrina Tirdea 129768caf858SIrina Tirdea return 0; 129868caf858SIrina Tirdea } 129968caf858SIrina Tirdea 130068caf858SIrina Tirdea static int goodix_ts_remove(struct i2c_client *client) 130168caf858SIrina Tirdea { 130268caf858SIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 130368caf858SIrina Tirdea 1304e070a97bSHans de Goede if (ts->load_cfg_from_disk) 130568caf858SIrina Tirdea wait_for_completion(&ts->firmware_loading_complete); 130668caf858SIrina Tirdea 130768caf858SIrina Tirdea return 0; 1308ca96ea86SBastien Nocera } 1309ca96ea86SBastien Nocera 13105ab09d6aSIrina Tirdea static int __maybe_unused goodix_suspend(struct device *dev) 13115ab09d6aSIrina Tirdea { 13125ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 13135ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 13145ab09d6aSIrina Tirdea int error; 13155ab09d6aSIrina Tirdea 1316e070a97bSHans de Goede if (ts->load_cfg_from_disk) 1317e070a97bSHans de Goede wait_for_completion(&ts->firmware_loading_complete); 1318e070a97bSHans de Goede 13195ab09d6aSIrina Tirdea /* We need gpio pins to suspend/resume */ 132049db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1321faec44b6SHans de Goede disable_irq(client->irq); 13225ab09d6aSIrina Tirdea return 0; 1323faec44b6SHans de Goede } 13245ab09d6aSIrina Tirdea 13255ab09d6aSIrina Tirdea /* Free IRQ as IRQ pin is used as output in the suspend sequence */ 13265ab09d6aSIrina Tirdea goodix_free_irq(ts); 13275ab09d6aSIrina Tirdea 13285ab09d6aSIrina Tirdea /* Output LOW on the INT pin for 5 ms */ 132949db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 13305ab09d6aSIrina Tirdea if (error) { 13315ab09d6aSIrina Tirdea goodix_request_irq(ts); 13325ab09d6aSIrina Tirdea return error; 13335ab09d6aSIrina Tirdea } 13345ab09d6aSIrina Tirdea 13355ab09d6aSIrina Tirdea usleep_range(5000, 6000); 13365ab09d6aSIrina Tirdea 13375ab09d6aSIrina Tirdea error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND, 13385ab09d6aSIrina Tirdea GOODIX_CMD_SCREEN_OFF); 13395ab09d6aSIrina Tirdea if (error) { 13405ab09d6aSIrina Tirdea dev_err(&ts->client->dev, "Screen off command failed\n"); 134149db3997SHans de Goede goodix_irq_direction_input(ts); 13425ab09d6aSIrina Tirdea goodix_request_irq(ts); 13435ab09d6aSIrina Tirdea return -EAGAIN; 13445ab09d6aSIrina Tirdea } 13455ab09d6aSIrina Tirdea 13465ab09d6aSIrina Tirdea /* 13475ab09d6aSIrina Tirdea * The datasheet specifies that the interval between sending screen-off 13485ab09d6aSIrina Tirdea * command and wake-up should be longer than 58 ms. To avoid waking up 13495ab09d6aSIrina Tirdea * sooner, delay 58ms here. 13505ab09d6aSIrina Tirdea */ 13515ab09d6aSIrina Tirdea msleep(58); 13525ab09d6aSIrina Tirdea return 0; 13535ab09d6aSIrina Tirdea } 13545ab09d6aSIrina Tirdea 13555ab09d6aSIrina Tirdea static int __maybe_unused goodix_resume(struct device *dev) 13565ab09d6aSIrina Tirdea { 13575ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 13585ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 1359273ec6bdSHans de Goede u8 config_ver; 13605ab09d6aSIrina Tirdea int error; 13615ab09d6aSIrina Tirdea 136249db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1363faec44b6SHans de Goede enable_irq(client->irq); 13645ab09d6aSIrina Tirdea return 0; 1365faec44b6SHans de Goede } 13665ab09d6aSIrina Tirdea 13675ab09d6aSIrina Tirdea /* 13685ab09d6aSIrina Tirdea * Exit sleep mode by outputting HIGH level to INT pin 13695ab09d6aSIrina Tirdea * for 2ms~5ms. 13705ab09d6aSIrina Tirdea */ 137149db3997SHans de Goede error = goodix_irq_direction_output(ts, 1); 13725ab09d6aSIrina Tirdea if (error) 13735ab09d6aSIrina Tirdea return error; 13745ab09d6aSIrina Tirdea 13755ab09d6aSIrina Tirdea usleep_range(2000, 5000); 13765ab09d6aSIrina Tirdea 13775ab09d6aSIrina Tirdea error = goodix_int_sync(ts); 13785ab09d6aSIrina Tirdea if (error) 13795ab09d6aSIrina Tirdea return error; 13805ab09d6aSIrina Tirdea 1381273ec6bdSHans de Goede error = goodix_i2c_read(ts->client, ts->chip->config_addr, 1382273ec6bdSHans de Goede &config_ver, 1); 1383273ec6bdSHans de Goede if (error) 1384273ec6bdSHans de Goede dev_warn(dev, "Error reading config version: %d, resetting controller\n", 1385273ec6bdSHans de Goede error); 1386273ec6bdSHans de Goede else if (config_ver != ts->config[0]) 1387273ec6bdSHans de Goede dev_info(dev, "Config version mismatch %d != %d, resetting controller\n", 1388273ec6bdSHans de Goede config_ver, ts->config[0]); 1389273ec6bdSHans de Goede 1390273ec6bdSHans de Goede if (error != 0 || config_ver != ts->config[0]) { 1391273ec6bdSHans de Goede error = goodix_reset(ts); 1392273ec6bdSHans de Goede if (error) { 1393273ec6bdSHans de Goede dev_err(dev, "Controller reset failed.\n"); 1394273ec6bdSHans de Goede return error; 1395273ec6bdSHans de Goede } 1396273ec6bdSHans de Goede 1397273ec6bdSHans de Goede error = goodix_send_cfg(ts, ts->config, ts->chip->config_len); 1398273ec6bdSHans de Goede if (error) 1399273ec6bdSHans de Goede return error; 1400273ec6bdSHans de Goede } 1401273ec6bdSHans de Goede 14025ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 14035ab09d6aSIrina Tirdea if (error) 14045ab09d6aSIrina Tirdea return error; 14055ab09d6aSIrina Tirdea 14065ab09d6aSIrina Tirdea return 0; 14075ab09d6aSIrina Tirdea } 14085ab09d6aSIrina Tirdea 14095ab09d6aSIrina Tirdea static SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume); 14105ab09d6aSIrina Tirdea 1411ca96ea86SBastien Nocera static const struct i2c_device_id goodix_ts_id[] = { 1412ca96ea86SBastien Nocera { "GDIX1001:00", 0 }, 1413ca96ea86SBastien Nocera { } 1414ca96ea86SBastien Nocera }; 14152e9e910eSJavier Martinez Canillas MODULE_DEVICE_TABLE(i2c, goodix_ts_id); 1416ca96ea86SBastien Nocera 1417771d8f1bSAleksei Mamlin #ifdef CONFIG_ACPI 1418ca96ea86SBastien Nocera static const struct acpi_device_id goodix_acpi_match[] = { 1419ca96ea86SBastien Nocera { "GDIX1001", 0 }, 14205ca4d1aeSEthan Lee { "GDIX1002", 0 }, 1421ca96ea86SBastien Nocera { } 1422ca96ea86SBastien Nocera }; 1423ca96ea86SBastien Nocera MODULE_DEVICE_TABLE(acpi, goodix_acpi_match); 1424771d8f1bSAleksei Mamlin #endif 1425771d8f1bSAleksei Mamlin 1426771d8f1bSAleksei Mamlin #ifdef CONFIG_OF 1427771d8f1bSAleksei Mamlin static const struct of_device_id goodix_of_match[] = { 142825309004SMarcin Niestroj { .compatible = "goodix,gt1151" }, 1429a5f50c50SJagan Teki { .compatible = "goodix,gt5663" }, 143084ef1b33SGuido Günther { .compatible = "goodix,gt5688" }, 1431771d8f1bSAleksei Mamlin { .compatible = "goodix,gt911" }, 1432771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9110" }, 1433771d8f1bSAleksei Mamlin { .compatible = "goodix,gt912" }, 1434b9a1c116SYannick Fertre { .compatible = "goodix,gt9147" }, 1435b5e458afSIcenowy Zheng { .compatible = "goodix,gt917s" }, 1436771d8f1bSAleksei Mamlin { .compatible = "goodix,gt927" }, 1437771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9271" }, 1438771d8f1bSAleksei Mamlin { .compatible = "goodix,gt928" }, 1439771d8f1bSAleksei Mamlin { .compatible = "goodix,gt967" }, 1440771d8f1bSAleksei Mamlin { } 1441771d8f1bSAleksei Mamlin }; 1442771d8f1bSAleksei Mamlin MODULE_DEVICE_TABLE(of, goodix_of_match); 1443771d8f1bSAleksei Mamlin #endif 1444ca96ea86SBastien Nocera 1445ca96ea86SBastien Nocera static struct i2c_driver goodix_ts_driver = { 1446ca96ea86SBastien Nocera .probe = goodix_ts_probe, 144768caf858SIrina Tirdea .remove = goodix_ts_remove, 1448ca96ea86SBastien Nocera .id_table = goodix_ts_id, 1449ca96ea86SBastien Nocera .driver = { 1450ca96ea86SBastien Nocera .name = "Goodix-TS", 1451771d8f1bSAleksei Mamlin .acpi_match_table = ACPI_PTR(goodix_acpi_match), 1452771d8f1bSAleksei Mamlin .of_match_table = of_match_ptr(goodix_of_match), 14535ab09d6aSIrina Tirdea .pm = &goodix_pm_ops, 1454ca96ea86SBastien Nocera }, 1455ca96ea86SBastien Nocera }; 1456ca96ea86SBastien Nocera module_i2c_driver(goodix_ts_driver); 1457ca96ea86SBastien Nocera 1458ca96ea86SBastien Nocera MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 1459ca96ea86SBastien Nocera MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>"); 1460ca96ea86SBastien Nocera MODULE_DESCRIPTION("Goodix touchscreen driver"); 1461ca96ea86SBastien Nocera MODULE_LICENSE("GPL v2"); 1462