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 3225309004SMarcin Niestroj struct goodix_ts_data; 3325309004SMarcin Niestroj 3449db3997SHans de Goede enum goodix_irq_pin_access_method { 3549db3997SHans de Goede IRQ_PIN_ACCESS_NONE, 3649db3997SHans de Goede IRQ_PIN_ACCESS_GPIO, 3749db3997SHans de Goede }; 3849db3997SHans de Goede 3925309004SMarcin Niestroj struct goodix_chip_data { 4025309004SMarcin Niestroj u16 config_addr; 4125309004SMarcin Niestroj int config_len; 4225309004SMarcin Niestroj int (*check_config)(struct goodix_ts_data *, const struct firmware *); 4325309004SMarcin Niestroj }; 4425309004SMarcin Niestroj 45ca96ea86SBastien Nocera struct goodix_ts_data { 46ca96ea86SBastien Nocera struct i2c_client *client; 47ca96ea86SBastien Nocera struct input_dev *input_dev; 4825309004SMarcin Niestroj const struct goodix_chip_data *chip; 49fafef982SMarcin Niestroj struct touchscreen_properties prop; 50ca96ea86SBastien Nocera unsigned int max_touch_num; 51ca96ea86SBastien Nocera unsigned int int_trigger_type; 52ae97fb58SJagan Teki struct regulator *avdd28; 53ae97fb58SJagan Teki struct regulator *vddio; 54ec6e1b40SIrina Tirdea struct gpio_desc *gpiod_int; 55ec6e1b40SIrina Tirdea struct gpio_desc *gpiod_rst; 5668caf858SIrina Tirdea u16 id; 5768caf858SIrina Tirdea u16 version; 5868caf858SIrina Tirdea const char *cfg_name; 5968caf858SIrina Tirdea struct completion firmware_loading_complete; 605ab09d6aSIrina Tirdea unsigned long irq_flags; 6149db3997SHans de Goede enum goodix_irq_pin_access_method irq_pin_access_method; 62bd3b8480SYauhen Kharuzhy unsigned int contact_size; 63ca96ea86SBastien Nocera }; 64ca96ea86SBastien Nocera 65ec6e1b40SIrina Tirdea #define GOODIX_GPIO_INT_NAME "irq" 66ec6e1b40SIrina Tirdea #define GOODIX_GPIO_RST_NAME "reset" 67ec6e1b40SIrina Tirdea 68ca96ea86SBastien Nocera #define GOODIX_MAX_HEIGHT 4096 69ca96ea86SBastien Nocera #define GOODIX_MAX_WIDTH 4096 70ca96ea86SBastien Nocera #define GOODIX_INT_TRIGGER 1 71ca96ea86SBastien Nocera #define GOODIX_CONTACT_SIZE 8 72bd3b8480SYauhen Kharuzhy #define GOODIX_MAX_CONTACT_SIZE 9 73ca96ea86SBastien Nocera #define GOODIX_MAX_CONTACTS 10 74ca96ea86SBastien Nocera 75ca96ea86SBastien Nocera #define GOODIX_CONFIG_MAX_LENGTH 240 76a779fbc6SIrina Tirdea #define GOODIX_CONFIG_911_LENGTH 186 77a779fbc6SIrina Tirdea #define GOODIX_CONFIG_967_LENGTH 228 78ca96ea86SBastien Nocera 79ca96ea86SBastien Nocera /* Register defines */ 805ab09d6aSIrina Tirdea #define GOODIX_REG_COMMAND 0x8040 815ab09d6aSIrina Tirdea #define GOODIX_CMD_SCREEN_OFF 0x05 825ab09d6aSIrina Tirdea 83ca96ea86SBastien Nocera #define GOODIX_READ_COOR_ADDR 0x814E 8425309004SMarcin Niestroj #define GOODIX_GT1X_REG_CONFIG_DATA 0x8050 8525309004SMarcin Niestroj #define GOODIX_GT9X_REG_CONFIG_DATA 0x8047 86e70b0307SIrina Tirdea #define GOODIX_REG_ID 0x8140 87ca96ea86SBastien Nocera 889b5db7aaSPaul Cercueil #define GOODIX_BUFFER_STATUS_READY BIT(7) 899b5db7aaSPaul Cercueil #define GOODIX_BUFFER_STATUS_TIMEOUT 20 909b5db7aaSPaul Cercueil 91ca96ea86SBastien Nocera #define RESOLUTION_LOC 1 92a7ac7c95SAleksei Mamlin #define MAX_CONTACTS_LOC 5 93ca96ea86SBastien Nocera #define TRIGGER_LOC 6 94ca96ea86SBastien Nocera 9525309004SMarcin Niestroj static int goodix_check_cfg_8(struct goodix_ts_data *ts, 9625309004SMarcin Niestroj const struct firmware *cfg); 9725309004SMarcin Niestroj static int goodix_check_cfg_16(struct goodix_ts_data *ts, 9825309004SMarcin Niestroj const struct firmware *cfg); 9925309004SMarcin Niestroj 10025309004SMarcin Niestroj static const struct goodix_chip_data gt1x_chip_data = { 10125309004SMarcin Niestroj .config_addr = GOODIX_GT1X_REG_CONFIG_DATA, 10225309004SMarcin Niestroj .config_len = GOODIX_CONFIG_MAX_LENGTH, 10325309004SMarcin Niestroj .check_config = goodix_check_cfg_16, 10425309004SMarcin Niestroj }; 10525309004SMarcin Niestroj 10625309004SMarcin Niestroj static const struct goodix_chip_data gt911_chip_data = { 10725309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 10825309004SMarcin Niestroj .config_len = GOODIX_CONFIG_911_LENGTH, 10925309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 11025309004SMarcin Niestroj }; 11125309004SMarcin Niestroj 11225309004SMarcin Niestroj static const struct goodix_chip_data gt967_chip_data = { 11325309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 11425309004SMarcin Niestroj .config_len = GOODIX_CONFIG_967_LENGTH, 11525309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 11625309004SMarcin Niestroj }; 11725309004SMarcin Niestroj 11825309004SMarcin Niestroj static const struct goodix_chip_data gt9x_chip_data = { 11925309004SMarcin Niestroj .config_addr = GOODIX_GT9X_REG_CONFIG_DATA, 12025309004SMarcin Niestroj .config_len = GOODIX_CONFIG_MAX_LENGTH, 12125309004SMarcin Niestroj .check_config = goodix_check_cfg_8, 12225309004SMarcin Niestroj }; 12325309004SMarcin Niestroj 124ca96ea86SBastien Nocera static const unsigned long goodix_irq_flags[] = { 125ca96ea86SBastien Nocera IRQ_TYPE_EDGE_RISING, 126ca96ea86SBastien Nocera IRQ_TYPE_EDGE_FALLING, 127ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_LOW, 128ca96ea86SBastien Nocera IRQ_TYPE_LEVEL_HIGH, 129ca96ea86SBastien Nocera }; 130ca96ea86SBastien Nocera 1318b5a359cSBastien Nocera /* 1328b5a359cSBastien Nocera * Those tablets have their coordinates origin at the bottom right 1338b5a359cSBastien Nocera * of the tablet, as if rotated 180 degrees 1348b5a359cSBastien Nocera */ 1358b5a359cSBastien Nocera static const struct dmi_system_id rotated_screen[] = { 1368b5a359cSBastien Nocera #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1378b5a359cSBastien Nocera { 138df5b5e55SHans de Goede .ident = "Teclast X89", 139df5b5e55SHans de Goede .matches = { 140df5b5e55SHans de Goede /* tPAD is too generic, also match on bios date */ 141df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_VENDOR, "TECLAST"), 142df5b5e55SHans de Goede DMI_MATCH(DMI_BOARD_NAME, "tPAD"), 143df5b5e55SHans de Goede DMI_MATCH(DMI_BIOS_DATE, "12/19/2014"), 144df5b5e55SHans de Goede }, 145df5b5e55SHans de Goede }, 146df5b5e55SHans de Goede { 1478b5a359cSBastien Nocera .ident = "WinBook TW100", 1488b5a359cSBastien Nocera .matches = { 1498b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 1508b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW100") 1518b5a359cSBastien Nocera } 1528b5a359cSBastien Nocera }, 1538b5a359cSBastien Nocera { 1548b5a359cSBastien Nocera .ident = "WinBook TW700", 1558b5a359cSBastien Nocera .matches = { 1568b5a359cSBastien Nocera DMI_MATCH(DMI_SYS_VENDOR, "WinBook"), 1578b5a359cSBastien Nocera DMI_MATCH(DMI_PRODUCT_NAME, "TW700") 1588b5a359cSBastien Nocera }, 1598b5a359cSBastien Nocera }, 1608b5a359cSBastien Nocera #endif 1618b5a359cSBastien Nocera {} 1628b5a359cSBastien Nocera }; 1638b5a359cSBastien Nocera 164bd3b8480SYauhen Kharuzhy static const struct dmi_system_id nine_bytes_report[] = { 165bd3b8480SYauhen Kharuzhy #if defined(CONFIG_DMI) && defined(CONFIG_X86) 166bd3b8480SYauhen Kharuzhy { 167bd3b8480SYauhen Kharuzhy .ident = "Lenovo YogaBook", 168bd3b8480SYauhen Kharuzhy /* YB1-X91L/F and YB1-X90L/F */ 169bd3b8480SYauhen Kharuzhy .matches = { 170bd3b8480SYauhen Kharuzhy DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9") 171bd3b8480SYauhen Kharuzhy } 172bd3b8480SYauhen Kharuzhy }, 173bd3b8480SYauhen Kharuzhy #endif 174bd3b8480SYauhen Kharuzhy {} 175bd3b8480SYauhen Kharuzhy }; 176bd3b8480SYauhen Kharuzhy 1771dd5ddc1SSergei A. Trusov /* 1781dd5ddc1SSergei A. Trusov * Those tablets have their x coordinate inverted 1791dd5ddc1SSergei A. Trusov */ 1801dd5ddc1SSergei A. Trusov static const struct dmi_system_id inverted_x_screen[] = { 1811dd5ddc1SSergei A. Trusov #if defined(CONFIG_DMI) && defined(CONFIG_X86) 1821dd5ddc1SSergei A. Trusov { 1831dd5ddc1SSergei A. Trusov .ident = "Cube I15-TC", 1841dd5ddc1SSergei A. Trusov .matches = { 1851dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_SYS_VENDOR, "Cube"), 1861dd5ddc1SSergei A. Trusov DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC") 1871dd5ddc1SSergei A. Trusov }, 1881dd5ddc1SSergei A. Trusov }, 1891dd5ddc1SSergei A. Trusov #endif 1901dd5ddc1SSergei A. Trusov {} 1911dd5ddc1SSergei A. Trusov }; 1921dd5ddc1SSergei A. Trusov 193ca96ea86SBastien Nocera /** 194ca96ea86SBastien Nocera * goodix_i2c_read - read data from a register of the i2c slave device. 195ca96ea86SBastien Nocera * 196ca96ea86SBastien Nocera * @client: i2c device. 197ca96ea86SBastien Nocera * @reg: the register to read from. 198ca96ea86SBastien Nocera * @buf: raw write data buffer. 199ca96ea86SBastien Nocera * @len: length of the buffer to write 200ca96ea86SBastien Nocera */ 201ca96ea86SBastien Nocera static int goodix_i2c_read(struct i2c_client *client, 202ca96ea86SBastien Nocera u16 reg, u8 *buf, int len) 203ca96ea86SBastien Nocera { 204ca96ea86SBastien Nocera struct i2c_msg msgs[2]; 205fafef982SMarcin Niestroj __be16 wbuf = cpu_to_be16(reg); 206ca96ea86SBastien Nocera int ret; 207ca96ea86SBastien Nocera 208ca96ea86SBastien Nocera msgs[0].flags = 0; 209ca96ea86SBastien Nocera msgs[0].addr = client->addr; 210ca96ea86SBastien Nocera msgs[0].len = 2; 211ca96ea86SBastien Nocera msgs[0].buf = (u8 *)&wbuf; 212ca96ea86SBastien Nocera 213ca96ea86SBastien Nocera msgs[1].flags = I2C_M_RD; 214ca96ea86SBastien Nocera msgs[1].addr = client->addr; 215ca96ea86SBastien Nocera msgs[1].len = len; 216ca96ea86SBastien Nocera msgs[1].buf = buf; 217ca96ea86SBastien Nocera 218ca96ea86SBastien Nocera ret = i2c_transfer(client->adapter, msgs, 2); 219ca96ea86SBastien Nocera return ret < 0 ? ret : (ret != ARRAY_SIZE(msgs) ? -EIO : 0); 220ca96ea86SBastien Nocera } 221ca96ea86SBastien Nocera 22268caf858SIrina Tirdea /** 22368caf858SIrina Tirdea * goodix_i2c_write - write data to a register of the i2c slave device. 22468caf858SIrina Tirdea * 22568caf858SIrina Tirdea * @client: i2c device. 22668caf858SIrina Tirdea * @reg: the register to write to. 22768caf858SIrina Tirdea * @buf: raw data buffer to write. 22868caf858SIrina Tirdea * @len: length of the buffer to write 22968caf858SIrina Tirdea */ 23068caf858SIrina Tirdea static int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, 23168caf858SIrina Tirdea unsigned len) 23268caf858SIrina Tirdea { 23368caf858SIrina Tirdea u8 *addr_buf; 23468caf858SIrina Tirdea struct i2c_msg msg; 23568caf858SIrina Tirdea int ret; 23668caf858SIrina Tirdea 23768caf858SIrina Tirdea addr_buf = kmalloc(len + 2, GFP_KERNEL); 23868caf858SIrina Tirdea if (!addr_buf) 23968caf858SIrina Tirdea return -ENOMEM; 24068caf858SIrina Tirdea 24168caf858SIrina Tirdea addr_buf[0] = reg >> 8; 24268caf858SIrina Tirdea addr_buf[1] = reg & 0xFF; 24368caf858SIrina Tirdea memcpy(&addr_buf[2], buf, len); 24468caf858SIrina Tirdea 24568caf858SIrina Tirdea msg.flags = 0; 24668caf858SIrina Tirdea msg.addr = client->addr; 24768caf858SIrina Tirdea msg.buf = addr_buf; 24868caf858SIrina Tirdea msg.len = len + 2; 24968caf858SIrina Tirdea 25068caf858SIrina Tirdea ret = i2c_transfer(client->adapter, &msg, 1); 25168caf858SIrina Tirdea kfree(addr_buf); 25268caf858SIrina Tirdea return ret < 0 ? ret : (ret != 1 ? -EIO : 0); 25368caf858SIrina Tirdea } 25468caf858SIrina Tirdea 2555ab09d6aSIrina Tirdea static int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value) 2565ab09d6aSIrina Tirdea { 2575ab09d6aSIrina Tirdea return goodix_i2c_write(client, reg, &value, sizeof(value)); 2585ab09d6aSIrina Tirdea } 2595ab09d6aSIrina Tirdea 26025309004SMarcin Niestroj static const struct goodix_chip_data *goodix_get_chip_data(u16 id) 261a779fbc6SIrina Tirdea { 262a779fbc6SIrina Tirdea switch (id) { 26325309004SMarcin Niestroj case 1151: 264a5f50c50SJagan Teki case 5663: 26584ef1b33SGuido Günther case 5688: 26625309004SMarcin Niestroj return >1x_chip_data; 26725309004SMarcin Niestroj 268a779fbc6SIrina Tirdea case 911: 269a779fbc6SIrina Tirdea case 9271: 270a779fbc6SIrina Tirdea case 9110: 271a779fbc6SIrina Tirdea case 927: 272a779fbc6SIrina Tirdea case 928: 27325309004SMarcin Niestroj return >911_chip_data; 274a779fbc6SIrina Tirdea 275a779fbc6SIrina Tirdea case 912: 276a779fbc6SIrina Tirdea case 967: 27725309004SMarcin Niestroj return >967_chip_data; 278a779fbc6SIrina Tirdea 279a779fbc6SIrina Tirdea default: 28025309004SMarcin Niestroj return >9x_chip_data; 281a779fbc6SIrina Tirdea } 282a779fbc6SIrina Tirdea } 283a779fbc6SIrina Tirdea 284ca96ea86SBastien Nocera static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data) 285ca96ea86SBastien Nocera { 2869b5db7aaSPaul Cercueil unsigned long max_timeout; 287ca96ea86SBastien Nocera int touch_num; 288ca96ea86SBastien Nocera int error; 289ca96ea86SBastien Nocera 2909b5db7aaSPaul Cercueil /* 2919b5db7aaSPaul Cercueil * The 'buffer status' bit, which indicates that the data is valid, is 2929b5db7aaSPaul Cercueil * not set as soon as the interrupt is raised, but slightly after. 2939b5db7aaSPaul Cercueil * This takes around 10 ms to happen, so we poll for 20 ms. 2949b5db7aaSPaul Cercueil */ 2959b5db7aaSPaul Cercueil max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT); 2969b5db7aaSPaul Cercueil do { 2979b5db7aaSPaul Cercueil error = goodix_i2c_read(ts->client, GOODIX_READ_COOR_ADDR, 298bd3b8480SYauhen Kharuzhy data, ts->contact_size + 1); 299ca96ea86SBastien Nocera if (error) { 3009b5db7aaSPaul Cercueil dev_err(&ts->client->dev, "I2C transfer error: %d\n", 3019b5db7aaSPaul Cercueil error); 302ca96ea86SBastien Nocera return error; 303ca96ea86SBastien Nocera } 304ca96ea86SBastien Nocera 3059b5db7aaSPaul Cercueil if (data[0] & GOODIX_BUFFER_STATUS_READY) { 306ca96ea86SBastien Nocera touch_num = data[0] & 0x0f; 307a7ac7c95SAleksei Mamlin if (touch_num > ts->max_touch_num) 308ca96ea86SBastien Nocera return -EPROTO; 309ca96ea86SBastien Nocera 310ca96ea86SBastien Nocera if (touch_num > 1) { 311bd3b8480SYauhen Kharuzhy data += 1 + ts->contact_size; 312ca96ea86SBastien Nocera error = goodix_i2c_read(ts->client, 313ca96ea86SBastien Nocera GOODIX_READ_COOR_ADDR + 314bd3b8480SYauhen Kharuzhy 1 + ts->contact_size, 315ca96ea86SBastien Nocera data, 316bd3b8480SYauhen Kharuzhy ts->contact_size * 3179b5db7aaSPaul Cercueil (touch_num - 1)); 318ca96ea86SBastien Nocera if (error) 319ca96ea86SBastien Nocera return error; 320ca96ea86SBastien Nocera } 321ca96ea86SBastien Nocera 322ca96ea86SBastien Nocera return touch_num; 323ca96ea86SBastien Nocera } 324ca96ea86SBastien Nocera 3259b5db7aaSPaul Cercueil usleep_range(1000, 2000); /* Poll every 1 - 2 ms */ 3269b5db7aaSPaul Cercueil } while (time_before(jiffies, max_timeout)); 3279b5db7aaSPaul Cercueil 3289b5db7aaSPaul Cercueil /* 3299b5db7aaSPaul Cercueil * The Goodix panel will send spurious interrupts after a 3309b5db7aaSPaul Cercueil * 'finger up' event, which will always cause a timeout. 3319b5db7aaSPaul Cercueil */ 3329b5db7aaSPaul Cercueil return 0; 3339b5db7aaSPaul Cercueil } 3349b5db7aaSPaul Cercueil 335bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data) 336ca96ea86SBastien Nocera { 337ca96ea86SBastien Nocera int id = coor_data[0] & 0x0F; 338ca96ea86SBastien Nocera int input_x = get_unaligned_le16(&coor_data[1]); 339ca96ea86SBastien Nocera int input_y = get_unaligned_le16(&coor_data[3]); 340ca96ea86SBastien Nocera int input_w = get_unaligned_le16(&coor_data[5]); 341ca96ea86SBastien Nocera 342ca96ea86SBastien Nocera input_mt_slot(ts->input_dev, id); 343ca96ea86SBastien Nocera input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 344fafef982SMarcin Niestroj touchscreen_report_pos(ts->input_dev, &ts->prop, 345fafef982SMarcin Niestroj input_x, input_y, true); 346ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 347ca96ea86SBastien Nocera input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 348ca96ea86SBastien Nocera } 349ca96ea86SBastien Nocera 350bd3b8480SYauhen Kharuzhy static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data) 351bd3b8480SYauhen Kharuzhy { 352bd3b8480SYauhen Kharuzhy int id = coor_data[1] & 0x0F; 353bd3b8480SYauhen Kharuzhy int input_x = get_unaligned_le16(&coor_data[3]); 354bd3b8480SYauhen Kharuzhy int input_y = get_unaligned_le16(&coor_data[5]); 355bd3b8480SYauhen Kharuzhy int input_w = get_unaligned_le16(&coor_data[7]); 356bd3b8480SYauhen Kharuzhy 357bd3b8480SYauhen Kharuzhy input_mt_slot(ts->input_dev, id); 358bd3b8480SYauhen Kharuzhy input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true); 359bd3b8480SYauhen Kharuzhy touchscreen_report_pos(ts->input_dev, &ts->prop, 360bd3b8480SYauhen Kharuzhy input_x, input_y, true); 361bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w); 362bd3b8480SYauhen Kharuzhy input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w); 363bd3b8480SYauhen Kharuzhy } 364bd3b8480SYauhen Kharuzhy 365ca96ea86SBastien Nocera /** 366ca96ea86SBastien Nocera * goodix_process_events - Process incoming events 367ca96ea86SBastien Nocera * 368ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 369ca96ea86SBastien Nocera * 370ca96ea86SBastien Nocera * Called when the IRQ is triggered. Read the current device state, and push 371ca96ea86SBastien Nocera * the input events to the user space. 372ca96ea86SBastien Nocera */ 373ca96ea86SBastien Nocera static void goodix_process_events(struct goodix_ts_data *ts) 374ca96ea86SBastien Nocera { 375bd3b8480SYauhen Kharuzhy u8 point_data[1 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS]; 376ca96ea86SBastien Nocera int touch_num; 377ca96ea86SBastien Nocera int i; 378ca96ea86SBastien Nocera 379ca96ea86SBastien Nocera touch_num = goodix_ts_read_input_report(ts, point_data); 380ca96ea86SBastien Nocera if (touch_num < 0) 381ca96ea86SBastien Nocera return; 382ca96ea86SBastien Nocera 3834a54feeaSSergei A. Trusov /* 3844a54feeaSSergei A. Trusov * Bit 4 of the first byte reports the status of the capacitive 3854a54feeaSSergei A. Trusov * Windows/Home button. 3864a54feeaSSergei A. Trusov */ 3874a54feeaSSergei A. Trusov input_report_key(ts->input_dev, KEY_LEFTMETA, point_data[0] & BIT(4)); 3884a54feeaSSergei A. Trusov 389ca96ea86SBastien Nocera for (i = 0; i < touch_num; i++) 390bd3b8480SYauhen Kharuzhy if (ts->contact_size == 9) 391bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_9b(ts, 392bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 393bd3b8480SYauhen Kharuzhy else 394bd3b8480SYauhen Kharuzhy goodix_ts_report_touch_8b(ts, 395bd3b8480SYauhen Kharuzhy &point_data[1 + ts->contact_size * i]); 396ca96ea86SBastien Nocera 397ca96ea86SBastien Nocera input_mt_sync_frame(ts->input_dev); 398ca96ea86SBastien Nocera input_sync(ts->input_dev); 399ca96ea86SBastien Nocera } 400ca96ea86SBastien Nocera 401ca96ea86SBastien Nocera /** 402ca96ea86SBastien Nocera * goodix_ts_irq_handler - The IRQ handler 403ca96ea86SBastien Nocera * 404ca96ea86SBastien Nocera * @irq: interrupt number. 405ca96ea86SBastien Nocera * @dev_id: private data pointer. 406ca96ea86SBastien Nocera */ 407ca96ea86SBastien Nocera static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id) 408ca96ea86SBastien Nocera { 409ca96ea86SBastien Nocera struct goodix_ts_data *ts = dev_id; 410ca96ea86SBastien Nocera 411ca96ea86SBastien Nocera goodix_process_events(ts); 412ca96ea86SBastien Nocera 4135d655b35SIrina Tirdea if (goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0) < 0) 414ca96ea86SBastien Nocera dev_err(&ts->client->dev, "I2C write end_cmd error\n"); 415ca96ea86SBastien Nocera 416ca96ea86SBastien Nocera return IRQ_HANDLED; 417ca96ea86SBastien Nocera } 418ca96ea86SBastien Nocera 4195ab09d6aSIrina Tirdea static void goodix_free_irq(struct goodix_ts_data *ts) 4205ab09d6aSIrina Tirdea { 4215ab09d6aSIrina Tirdea devm_free_irq(&ts->client->dev, ts->client->irq, ts); 4225ab09d6aSIrina Tirdea } 4235ab09d6aSIrina Tirdea 4245ab09d6aSIrina Tirdea static int goodix_request_irq(struct goodix_ts_data *ts) 4255ab09d6aSIrina Tirdea { 4265ab09d6aSIrina Tirdea return devm_request_threaded_irq(&ts->client->dev, ts->client->irq, 4275ab09d6aSIrina Tirdea NULL, goodix_ts_irq_handler, 4285ab09d6aSIrina Tirdea ts->irq_flags, ts->client->name, ts); 4295ab09d6aSIrina Tirdea } 4305ab09d6aSIrina Tirdea 43125309004SMarcin Niestroj static int goodix_check_cfg_8(struct goodix_ts_data *ts, 43268caf858SIrina Tirdea const struct firmware *cfg) 43368caf858SIrina Tirdea { 43425309004SMarcin Niestroj int i, raw_cfg_len = cfg->size - 2; 43568caf858SIrina Tirdea u8 check_sum = 0; 43668caf858SIrina Tirdea 43768caf858SIrina Tirdea for (i = 0; i < raw_cfg_len; i++) 43868caf858SIrina Tirdea check_sum += cfg->data[i]; 43968caf858SIrina Tirdea check_sum = (~check_sum) + 1; 44068caf858SIrina Tirdea if (check_sum != cfg->data[raw_cfg_len]) { 44168caf858SIrina Tirdea dev_err(&ts->client->dev, 44268caf858SIrina Tirdea "The checksum of the config fw is not correct"); 44368caf858SIrina Tirdea return -EINVAL; 44468caf858SIrina Tirdea } 44568caf858SIrina Tirdea 44668caf858SIrina Tirdea if (cfg->data[raw_cfg_len + 1] != 1) { 44768caf858SIrina Tirdea dev_err(&ts->client->dev, 44868caf858SIrina Tirdea "Config fw must have Config_Fresh register set"); 44968caf858SIrina Tirdea return -EINVAL; 45068caf858SIrina Tirdea } 45168caf858SIrina Tirdea 45268caf858SIrina Tirdea return 0; 45368caf858SIrina Tirdea } 45468caf858SIrina Tirdea 45525309004SMarcin Niestroj static int goodix_check_cfg_16(struct goodix_ts_data *ts, 45625309004SMarcin Niestroj const struct firmware *cfg) 45725309004SMarcin Niestroj { 45825309004SMarcin Niestroj int i, raw_cfg_len = cfg->size - 3; 45925309004SMarcin Niestroj u16 check_sum = 0; 46025309004SMarcin Niestroj 46125309004SMarcin Niestroj for (i = 0; i < raw_cfg_len; i += 2) 46225309004SMarcin Niestroj check_sum += get_unaligned_be16(&cfg->data[i]); 46325309004SMarcin Niestroj check_sum = (~check_sum) + 1; 46425309004SMarcin Niestroj if (check_sum != get_unaligned_be16(&cfg->data[raw_cfg_len])) { 46525309004SMarcin Niestroj dev_err(&ts->client->dev, 46625309004SMarcin Niestroj "The checksum of the config fw is not correct"); 46725309004SMarcin Niestroj return -EINVAL; 46825309004SMarcin Niestroj } 46925309004SMarcin Niestroj 47025309004SMarcin Niestroj if (cfg->data[raw_cfg_len + 2] != 1) { 47125309004SMarcin Niestroj dev_err(&ts->client->dev, 47225309004SMarcin Niestroj "Config fw must have Config_Fresh register set"); 47325309004SMarcin Niestroj return -EINVAL; 47425309004SMarcin Niestroj } 47525309004SMarcin Niestroj 47625309004SMarcin Niestroj return 0; 47725309004SMarcin Niestroj } 47825309004SMarcin Niestroj 47925309004SMarcin Niestroj /** 48025309004SMarcin Niestroj * goodix_check_cfg - Checks if config fw is valid 48125309004SMarcin Niestroj * 48225309004SMarcin Niestroj * @ts: goodix_ts_data pointer 48325309004SMarcin Niestroj * @cfg: firmware config data 48425309004SMarcin Niestroj */ 48525309004SMarcin Niestroj static int goodix_check_cfg(struct goodix_ts_data *ts, 48625309004SMarcin Niestroj const struct firmware *cfg) 48725309004SMarcin Niestroj { 48825309004SMarcin Niestroj if (cfg->size > GOODIX_CONFIG_MAX_LENGTH) { 48925309004SMarcin Niestroj dev_err(&ts->client->dev, 49025309004SMarcin Niestroj "The length of the config fw is not correct"); 49125309004SMarcin Niestroj return -EINVAL; 49225309004SMarcin Niestroj } 49325309004SMarcin Niestroj 49425309004SMarcin Niestroj return ts->chip->check_config(ts, cfg); 49525309004SMarcin Niestroj } 49625309004SMarcin Niestroj 49768caf858SIrina Tirdea /** 49868caf858SIrina Tirdea * goodix_send_cfg - Write fw config to device 49968caf858SIrina Tirdea * 50068caf858SIrina Tirdea * @ts: goodix_ts_data pointer 50168caf858SIrina Tirdea * @cfg: config firmware to write to device 50268caf858SIrina Tirdea */ 50368caf858SIrina Tirdea static int goodix_send_cfg(struct goodix_ts_data *ts, 50468caf858SIrina Tirdea const struct firmware *cfg) 50568caf858SIrina Tirdea { 50668caf858SIrina Tirdea int error; 50768caf858SIrina Tirdea 50868caf858SIrina Tirdea error = goodix_check_cfg(ts, cfg); 50968caf858SIrina Tirdea if (error) 51068caf858SIrina Tirdea return error; 51168caf858SIrina Tirdea 51225309004SMarcin Niestroj error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg->data, 51368caf858SIrina Tirdea cfg->size); 51468caf858SIrina Tirdea if (error) { 51568caf858SIrina Tirdea dev_err(&ts->client->dev, "Failed to write config data: %d", 51668caf858SIrina Tirdea error); 51768caf858SIrina Tirdea return error; 51868caf858SIrina Tirdea } 51968caf858SIrina Tirdea dev_dbg(&ts->client->dev, "Config sent successfully."); 52068caf858SIrina Tirdea 52168caf858SIrina Tirdea /* Let the firmware reconfigure itself, so sleep for 10ms */ 52268caf858SIrina Tirdea usleep_range(10000, 11000); 52368caf858SIrina Tirdea 52468caf858SIrina Tirdea return 0; 52568caf858SIrina Tirdea } 52668caf858SIrina Tirdea 52749db3997SHans de Goede static int goodix_irq_direction_output(struct goodix_ts_data *ts, 52849db3997SHans de Goede int value) 52949db3997SHans de Goede { 53049db3997SHans de Goede switch (ts->irq_pin_access_method) { 53149db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 53249db3997SHans de Goede dev_err(&ts->client->dev, 53349db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 53449db3997SHans de Goede __func__); 53549db3997SHans de Goede return -EINVAL; 53649db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 53749db3997SHans de Goede return gpiod_direction_output(ts->gpiod_int, value); 53849db3997SHans de Goede } 53949db3997SHans de Goede 54049db3997SHans de Goede return -EINVAL; /* Never reached */ 54149db3997SHans de Goede } 54249db3997SHans de Goede 54349db3997SHans de Goede static int goodix_irq_direction_input(struct goodix_ts_data *ts) 54449db3997SHans de Goede { 54549db3997SHans de Goede switch (ts->irq_pin_access_method) { 54649db3997SHans de Goede case IRQ_PIN_ACCESS_NONE: 54749db3997SHans de Goede dev_err(&ts->client->dev, 54849db3997SHans de Goede "%s called without an irq_pin_access_method set\n", 54949db3997SHans de Goede __func__); 55049db3997SHans de Goede return -EINVAL; 55149db3997SHans de Goede case IRQ_PIN_ACCESS_GPIO: 55249db3997SHans de Goede return gpiod_direction_input(ts->gpiod_int); 55349db3997SHans de Goede } 55449db3997SHans de Goede 55549db3997SHans de Goede return -EINVAL; /* Never reached */ 55649db3997SHans de Goede } 55749db3997SHans de Goede 558ec6e1b40SIrina Tirdea static int goodix_int_sync(struct goodix_ts_data *ts) 559ec6e1b40SIrina Tirdea { 560ec6e1b40SIrina Tirdea int error; 561ec6e1b40SIrina Tirdea 56249db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 563ec6e1b40SIrina Tirdea if (error) 564ec6e1b40SIrina Tirdea return error; 565ec6e1b40SIrina Tirdea 566ec6e1b40SIrina Tirdea msleep(50); /* T5: 50ms */ 567ec6e1b40SIrina Tirdea 56849db3997SHans de Goede error = goodix_irq_direction_input(ts); 569ec6e1b40SIrina Tirdea if (error) 570ec6e1b40SIrina Tirdea return error; 571ec6e1b40SIrina Tirdea 572ec6e1b40SIrina Tirdea return 0; 573ec6e1b40SIrina Tirdea } 574ec6e1b40SIrina Tirdea 575ec6e1b40SIrina Tirdea /** 576ec6e1b40SIrina Tirdea * goodix_reset - Reset device during power on 577ec6e1b40SIrina Tirdea * 578ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 579ec6e1b40SIrina Tirdea */ 580ec6e1b40SIrina Tirdea static int goodix_reset(struct goodix_ts_data *ts) 581ec6e1b40SIrina Tirdea { 582ec6e1b40SIrina Tirdea int error; 583ec6e1b40SIrina Tirdea 584ec6e1b40SIrina Tirdea /* begin select I2C slave addr */ 585ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 0); 586ec6e1b40SIrina Tirdea if (error) 587ec6e1b40SIrina Tirdea return error; 588ec6e1b40SIrina Tirdea 589ec6e1b40SIrina Tirdea msleep(20); /* T2: > 10ms */ 590ec6e1b40SIrina Tirdea 591ec6e1b40SIrina Tirdea /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */ 59249db3997SHans de Goede error = goodix_irq_direction_output(ts, ts->client->addr == 0x14); 593ec6e1b40SIrina Tirdea if (error) 594ec6e1b40SIrina Tirdea return error; 595ec6e1b40SIrina Tirdea 596ec6e1b40SIrina Tirdea usleep_range(100, 2000); /* T3: > 100us */ 597ec6e1b40SIrina Tirdea 598ec6e1b40SIrina Tirdea error = gpiod_direction_output(ts->gpiod_rst, 1); 599ec6e1b40SIrina Tirdea if (error) 600ec6e1b40SIrina Tirdea return error; 601ec6e1b40SIrina Tirdea 602ec6e1b40SIrina Tirdea usleep_range(6000, 10000); /* T4: > 5ms */ 603ec6e1b40SIrina Tirdea 604ec6e1b40SIrina Tirdea /* end select I2C slave addr */ 605ec6e1b40SIrina Tirdea error = gpiod_direction_input(ts->gpiod_rst); 606ec6e1b40SIrina Tirdea if (error) 607ec6e1b40SIrina Tirdea return error; 608ec6e1b40SIrina Tirdea 609ec6e1b40SIrina Tirdea error = goodix_int_sync(ts); 610ec6e1b40SIrina Tirdea if (error) 611ec6e1b40SIrina Tirdea return error; 612ec6e1b40SIrina Tirdea 613ec6e1b40SIrina Tirdea return 0; 614ec6e1b40SIrina Tirdea } 615ec6e1b40SIrina Tirdea 616ec6e1b40SIrina Tirdea /** 617ec6e1b40SIrina Tirdea * goodix_get_gpio_config - Get GPIO config from ACPI/DT 618ec6e1b40SIrina Tirdea * 619ec6e1b40SIrina Tirdea * @ts: goodix_ts_data pointer 620ec6e1b40SIrina Tirdea */ 621ec6e1b40SIrina Tirdea static int goodix_get_gpio_config(struct goodix_ts_data *ts) 622ec6e1b40SIrina Tirdea { 623ec6e1b40SIrina Tirdea int error; 624ec6e1b40SIrina Tirdea struct device *dev; 625ec6e1b40SIrina Tirdea struct gpio_desc *gpiod; 626ec6e1b40SIrina Tirdea 627ec6e1b40SIrina Tirdea if (!ts->client) 628ec6e1b40SIrina Tirdea return -EINVAL; 629ec6e1b40SIrina Tirdea dev = &ts->client->dev; 630ec6e1b40SIrina Tirdea 631ae97fb58SJagan Teki ts->avdd28 = devm_regulator_get(dev, "AVDD28"); 632ae97fb58SJagan Teki if (IS_ERR(ts->avdd28)) { 633ae97fb58SJagan Teki error = PTR_ERR(ts->avdd28); 634ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 635ae97fb58SJagan Teki dev_err(dev, 636ae97fb58SJagan Teki "Failed to get AVDD28 regulator: %d\n", error); 637ae97fb58SJagan Teki return error; 638ae97fb58SJagan Teki } 639ae97fb58SJagan Teki 640ae97fb58SJagan Teki ts->vddio = devm_regulator_get(dev, "VDDIO"); 641ae97fb58SJagan Teki if (IS_ERR(ts->vddio)) { 642ae97fb58SJagan Teki error = PTR_ERR(ts->vddio); 643ae97fb58SJagan Teki if (error != -EPROBE_DEFER) 644ae97fb58SJagan Teki dev_err(dev, 645ae97fb58SJagan Teki "Failed to get VDDIO regulator: %d\n", error); 646ae97fb58SJagan Teki return error; 647ae97fb58SJagan Teki } 648ae97fb58SJagan Teki 649ec6e1b40SIrina Tirdea /* Get the interrupt GPIO pin number */ 650ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN); 651ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 652ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 653ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 654ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 655ec6e1b40SIrina Tirdea GOODIX_GPIO_INT_NAME, error); 656ec6e1b40SIrina Tirdea return error; 657ec6e1b40SIrina Tirdea } 658ec6e1b40SIrina Tirdea 659ec6e1b40SIrina Tirdea ts->gpiod_int = gpiod; 660ec6e1b40SIrina Tirdea 661ec6e1b40SIrina Tirdea /* Get the reset line GPIO pin number */ 662ec6e1b40SIrina Tirdea gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, GPIOD_IN); 663ec6e1b40SIrina Tirdea if (IS_ERR(gpiod)) { 664ec6e1b40SIrina Tirdea error = PTR_ERR(gpiod); 665ec6e1b40SIrina Tirdea if (error != -EPROBE_DEFER) 666ec6e1b40SIrina Tirdea dev_dbg(dev, "Failed to get %s GPIO: %d\n", 667ec6e1b40SIrina Tirdea GOODIX_GPIO_RST_NAME, error); 668ec6e1b40SIrina Tirdea return error; 669ec6e1b40SIrina Tirdea } 670ec6e1b40SIrina Tirdea 671ec6e1b40SIrina Tirdea ts->gpiod_rst = gpiod; 672ec6e1b40SIrina Tirdea 67349db3997SHans de Goede if (ts->gpiod_int && ts->gpiod_rst) 67449db3997SHans de Goede ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO; 67549db3997SHans de Goede 676ec6e1b40SIrina Tirdea return 0; 677ec6e1b40SIrina Tirdea } 678ec6e1b40SIrina Tirdea 679ca96ea86SBastien Nocera /** 680ca96ea86SBastien Nocera * goodix_read_config - Read the embedded configuration of the panel 681ca96ea86SBastien Nocera * 682ca96ea86SBastien Nocera * @ts: our goodix_ts_data pointer 683ca96ea86SBastien Nocera * 684ca96ea86SBastien Nocera * Must be called during probe 685ca96ea86SBastien Nocera */ 686ca96ea86SBastien Nocera static void goodix_read_config(struct goodix_ts_data *ts) 687ca96ea86SBastien Nocera { 688ca96ea86SBastien Nocera u8 config[GOODIX_CONFIG_MAX_LENGTH]; 689fafef982SMarcin Niestroj int x_max, y_max; 690ca96ea86SBastien Nocera int error; 691ca96ea86SBastien Nocera 69225309004SMarcin Niestroj error = goodix_i2c_read(ts->client, ts->chip->config_addr, 69325309004SMarcin Niestroj config, ts->chip->config_len); 694ca96ea86SBastien Nocera if (error) { 695fafef982SMarcin Niestroj dev_warn(&ts->client->dev, "Error reading config: %d\n", 696ca96ea86SBastien Nocera error); 697ca96ea86SBastien Nocera ts->int_trigger_type = GOODIX_INT_TRIGGER; 698a7ac7c95SAleksei Mamlin ts->max_touch_num = GOODIX_MAX_CONTACTS; 699ca96ea86SBastien Nocera return; 700ca96ea86SBastien Nocera } 701ca96ea86SBastien Nocera 702a7ac7c95SAleksei Mamlin ts->int_trigger_type = config[TRIGGER_LOC] & 0x03; 703a7ac7c95SAleksei Mamlin ts->max_touch_num = config[MAX_CONTACTS_LOC] & 0x0f; 7048b5a359cSBastien Nocera 705fafef982SMarcin Niestroj x_max = get_unaligned_le16(&config[RESOLUTION_LOC]); 706fafef982SMarcin Niestroj y_max = get_unaligned_le16(&config[RESOLUTION_LOC + 2]); 707fafef982SMarcin Niestroj if (x_max && y_max) { 708fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1); 709fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1); 710ca96ea86SBastien Nocera } 71157c80e8eSKarsten Merker } 712ca96ea86SBastien Nocera 713ca96ea86SBastien Nocera /** 714ca96ea86SBastien Nocera * goodix_read_version - Read goodix touchscreen version 715ca96ea86SBastien Nocera * 71668caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 717ca96ea86SBastien Nocera */ 71868caf858SIrina Tirdea static int goodix_read_version(struct goodix_ts_data *ts) 719ca96ea86SBastien Nocera { 720ca96ea86SBastien Nocera int error; 721ca96ea86SBastien Nocera u8 buf[6]; 722e70b0307SIrina Tirdea char id_str[5]; 723ca96ea86SBastien Nocera 72468caf858SIrina Tirdea error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf)); 725ca96ea86SBastien Nocera if (error) { 72668caf858SIrina Tirdea dev_err(&ts->client->dev, "read version failed: %d\n", error); 727ca96ea86SBastien Nocera return error; 728ca96ea86SBastien Nocera } 729ca96ea86SBastien Nocera 730e70b0307SIrina Tirdea memcpy(id_str, buf, 4); 731e70b0307SIrina Tirdea id_str[4] = 0; 73268caf858SIrina Tirdea if (kstrtou16(id_str, 10, &ts->id)) 73368caf858SIrina Tirdea ts->id = 0x1001; 734e70b0307SIrina Tirdea 73568caf858SIrina Tirdea ts->version = get_unaligned_le16(&buf[4]); 736ca96ea86SBastien Nocera 73768caf858SIrina Tirdea dev_info(&ts->client->dev, "ID %d, version: %04x\n", ts->id, 73868caf858SIrina Tirdea ts->version); 739ca96ea86SBastien Nocera 740ca96ea86SBastien Nocera return 0; 741ca96ea86SBastien Nocera } 742ca96ea86SBastien Nocera 743ca96ea86SBastien Nocera /** 744ca96ea86SBastien Nocera * goodix_i2c_test - I2C test function to check if the device answers. 745ca96ea86SBastien Nocera * 746ca96ea86SBastien Nocera * @client: the i2c client 747ca96ea86SBastien Nocera */ 748ca96ea86SBastien Nocera static int goodix_i2c_test(struct i2c_client *client) 749ca96ea86SBastien Nocera { 750ca96ea86SBastien Nocera int retry = 0; 751ca96ea86SBastien Nocera int error; 752ca96ea86SBastien Nocera u8 test; 753ca96ea86SBastien Nocera 754ca96ea86SBastien Nocera while (retry++ < 2) { 75525309004SMarcin Niestroj error = goodix_i2c_read(client, GOODIX_REG_ID, 756ca96ea86SBastien Nocera &test, 1); 757ca96ea86SBastien Nocera if (!error) 758ca96ea86SBastien Nocera return 0; 759ca96ea86SBastien Nocera 760ca96ea86SBastien Nocera dev_err(&client->dev, "i2c test failed attempt %d: %d\n", 761ca96ea86SBastien Nocera retry, error); 762ca96ea86SBastien Nocera msleep(20); 763ca96ea86SBastien Nocera } 764ca96ea86SBastien Nocera 765ca96ea86SBastien Nocera return error; 766ca96ea86SBastien Nocera } 767ca96ea86SBastien Nocera 768ca96ea86SBastien Nocera /** 76968caf858SIrina Tirdea * goodix_configure_dev - Finish device initialization 77068caf858SIrina Tirdea * 77168caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 77268caf858SIrina Tirdea * 77368caf858SIrina Tirdea * Must be called from probe to finish initialization of the device. 77468caf858SIrina Tirdea * Contains the common initialization code for both devices that 77568caf858SIrina Tirdea * declare gpio pins and devices that do not. It is either called 77668caf858SIrina Tirdea * directly from probe or from request_firmware_wait callback. 77768caf858SIrina Tirdea */ 77868caf858SIrina Tirdea static int goodix_configure_dev(struct goodix_ts_data *ts) 77968caf858SIrina Tirdea { 78068caf858SIrina Tirdea int error; 78168caf858SIrina Tirdea 782fafef982SMarcin Niestroj ts->int_trigger_type = GOODIX_INT_TRIGGER; 783fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 784ad48cf5eSKarsten Merker 785fafef982SMarcin Niestroj ts->input_dev = devm_input_allocate_device(&ts->client->dev); 786fafef982SMarcin Niestroj if (!ts->input_dev) { 787fafef982SMarcin Niestroj dev_err(&ts->client->dev, "Failed to allocate input device."); 788fafef982SMarcin Niestroj return -ENOMEM; 789fafef982SMarcin Niestroj } 790fafef982SMarcin Niestroj 791fafef982SMarcin Niestroj ts->input_dev->name = "Goodix Capacitive TouchScreen"; 792fafef982SMarcin Niestroj ts->input_dev->phys = "input/ts"; 793fafef982SMarcin Niestroj ts->input_dev->id.bustype = BUS_I2C; 794fafef982SMarcin Niestroj ts->input_dev->id.vendor = 0x0416; 795fafef982SMarcin Niestroj ts->input_dev->id.product = ts->id; 796fafef982SMarcin Niestroj ts->input_dev->id.version = ts->version; 797fafef982SMarcin Niestroj 798fafef982SMarcin Niestroj /* Capacitive Windows/Home button on some devices */ 799fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_KEY, KEY_LEFTMETA); 800fafef982SMarcin Niestroj 801fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X); 802fafef982SMarcin Niestroj input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y); 803fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); 804fafef982SMarcin Niestroj input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0); 805fafef982SMarcin Niestroj 806fafef982SMarcin Niestroj /* Read configuration and apply touchscreen parameters */ 80768caf858SIrina Tirdea goodix_read_config(ts); 80868caf858SIrina Tirdea 809fafef982SMarcin Niestroj /* Try overriding touchscreen parameters via device properties */ 810fafef982SMarcin Niestroj touchscreen_parse_properties(ts->input_dev, true, &ts->prop); 811fafef982SMarcin Niestroj 812fafef982SMarcin Niestroj if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) { 813c1c00aa5SGuido Günther dev_err(&ts->client->dev, 814c1c00aa5SGuido Günther "Invalid config (%d, %d, %d), using defaults\n", 815c1c00aa5SGuido Günther ts->prop.max_x, ts->prop.max_y, ts->max_touch_num); 816fafef982SMarcin Niestroj ts->prop.max_x = GOODIX_MAX_WIDTH - 1; 817fafef982SMarcin Niestroj ts->prop.max_y = GOODIX_MAX_HEIGHT - 1; 818fafef982SMarcin Niestroj ts->max_touch_num = GOODIX_MAX_CONTACTS; 819fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 820fafef982SMarcin Niestroj ABS_MT_POSITION_X, ts->prop.max_x); 821fafef982SMarcin Niestroj input_abs_set_max(ts->input_dev, 822fafef982SMarcin Niestroj ABS_MT_POSITION_Y, ts->prop.max_y); 823fafef982SMarcin Niestroj } 824fafef982SMarcin Niestroj 825fafef982SMarcin Niestroj if (dmi_check_system(rotated_screen)) { 826fafef982SMarcin Niestroj ts->prop.invert_x = true; 827fafef982SMarcin Niestroj ts->prop.invert_y = true; 828fafef982SMarcin Niestroj dev_dbg(&ts->client->dev, 829fafef982SMarcin Niestroj "Applying '180 degrees rotated screen' quirk\n"); 830fafef982SMarcin Niestroj } 831fafef982SMarcin Niestroj 832bd3b8480SYauhen Kharuzhy if (dmi_check_system(nine_bytes_report)) { 833bd3b8480SYauhen Kharuzhy ts->contact_size = 9; 834bd3b8480SYauhen Kharuzhy 835bd3b8480SYauhen Kharuzhy dev_dbg(&ts->client->dev, 836bd3b8480SYauhen Kharuzhy "Non-standard 9-bytes report format quirk\n"); 837bd3b8480SYauhen Kharuzhy } 838bd3b8480SYauhen Kharuzhy 8391dd5ddc1SSergei A. Trusov if (dmi_check_system(inverted_x_screen)) { 8401dd5ddc1SSergei A. Trusov ts->prop.invert_x = true; 8411dd5ddc1SSergei A. Trusov dev_dbg(&ts->client->dev, 8421dd5ddc1SSergei A. Trusov "Applying 'inverted x screen' quirk\n"); 8431dd5ddc1SSergei A. Trusov } 8441dd5ddc1SSergei A. Trusov 845fafef982SMarcin Niestroj error = input_mt_init_slots(ts->input_dev, ts->max_touch_num, 846fafef982SMarcin Niestroj INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); 847fafef982SMarcin Niestroj if (error) { 848fafef982SMarcin Niestroj dev_err(&ts->client->dev, 849fafef982SMarcin Niestroj "Failed to initialize MT slots: %d", error); 85068caf858SIrina Tirdea return error; 851fafef982SMarcin Niestroj } 852fafef982SMarcin Niestroj 853fafef982SMarcin Niestroj error = input_register_device(ts->input_dev); 854fafef982SMarcin Niestroj if (error) { 855fafef982SMarcin Niestroj dev_err(&ts->client->dev, 856fafef982SMarcin Niestroj "Failed to register input device: %d", error); 857fafef982SMarcin Niestroj return error; 858fafef982SMarcin Niestroj } 85968caf858SIrina Tirdea 8605ab09d6aSIrina Tirdea ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT; 8615ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 86268caf858SIrina Tirdea if (error) { 86368caf858SIrina Tirdea dev_err(&ts->client->dev, "request IRQ failed: %d\n", error); 86468caf858SIrina Tirdea return error; 86568caf858SIrina Tirdea } 86668caf858SIrina Tirdea 86768caf858SIrina Tirdea return 0; 86868caf858SIrina Tirdea } 86968caf858SIrina Tirdea 87068caf858SIrina Tirdea /** 87168caf858SIrina Tirdea * goodix_config_cb - Callback to finish device init 87268caf858SIrina Tirdea * 87368caf858SIrina Tirdea * @ts: our goodix_ts_data pointer 87468caf858SIrina Tirdea * 87568caf858SIrina Tirdea * request_firmware_wait callback that finishes 87668caf858SIrina Tirdea * initialization of the device. 87768caf858SIrina Tirdea */ 87868caf858SIrina Tirdea static void goodix_config_cb(const struct firmware *cfg, void *ctx) 87968caf858SIrina Tirdea { 88068caf858SIrina Tirdea struct goodix_ts_data *ts = ctx; 88168caf858SIrina Tirdea int error; 88268caf858SIrina Tirdea 88368caf858SIrina Tirdea if (cfg) { 88468caf858SIrina Tirdea /* send device configuration to the firmware */ 88568caf858SIrina Tirdea error = goodix_send_cfg(ts, cfg); 88668caf858SIrina Tirdea if (error) 88768caf858SIrina Tirdea goto err_release_cfg; 88868caf858SIrina Tirdea } 88968caf858SIrina Tirdea 89068caf858SIrina Tirdea goodix_configure_dev(ts); 89168caf858SIrina Tirdea 89268caf858SIrina Tirdea err_release_cfg: 89368caf858SIrina Tirdea release_firmware(cfg); 89468caf858SIrina Tirdea complete_all(&ts->firmware_loading_complete); 89568caf858SIrina Tirdea } 89668caf858SIrina Tirdea 897ae97fb58SJagan Teki static void goodix_disable_regulators(void *arg) 898ae97fb58SJagan Teki { 899ae97fb58SJagan Teki struct goodix_ts_data *ts = arg; 900ae97fb58SJagan Teki 901ae97fb58SJagan Teki regulator_disable(ts->vddio); 902ae97fb58SJagan Teki regulator_disable(ts->avdd28); 903ae97fb58SJagan Teki } 904ae97fb58SJagan Teki 905ca96ea86SBastien Nocera static int goodix_ts_probe(struct i2c_client *client, 906ca96ea86SBastien Nocera const struct i2c_device_id *id) 907ca96ea86SBastien Nocera { 908ca96ea86SBastien Nocera struct goodix_ts_data *ts; 909ca96ea86SBastien Nocera int error; 910ca96ea86SBastien Nocera 911ca96ea86SBastien Nocera dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr); 912ca96ea86SBastien Nocera 913ca96ea86SBastien Nocera if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 914ca96ea86SBastien Nocera dev_err(&client->dev, "I2C check functionality failed.\n"); 915ca96ea86SBastien Nocera return -ENXIO; 916ca96ea86SBastien Nocera } 917ca96ea86SBastien Nocera 918ca96ea86SBastien Nocera ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); 919ca96ea86SBastien Nocera if (!ts) 920ca96ea86SBastien Nocera return -ENOMEM; 921ca96ea86SBastien Nocera 922ca96ea86SBastien Nocera ts->client = client; 923ca96ea86SBastien Nocera i2c_set_clientdata(client, ts); 92468caf858SIrina Tirdea init_completion(&ts->firmware_loading_complete); 925bd3b8480SYauhen Kharuzhy ts->contact_size = GOODIX_CONTACT_SIZE; 926ca96ea86SBastien Nocera 927ec6e1b40SIrina Tirdea error = goodix_get_gpio_config(ts); 928ec6e1b40SIrina Tirdea if (error) 929ec6e1b40SIrina Tirdea return error; 930ec6e1b40SIrina Tirdea 931ae97fb58SJagan Teki /* power up the controller */ 932ae97fb58SJagan Teki error = regulator_enable(ts->avdd28); 933ae97fb58SJagan Teki if (error) { 934ae97fb58SJagan Teki dev_err(&client->dev, 935ae97fb58SJagan Teki "Failed to enable AVDD28 regulator: %d\n", 936ae97fb58SJagan Teki error); 937ae97fb58SJagan Teki return error; 938ae97fb58SJagan Teki } 939ae97fb58SJagan Teki 940ae97fb58SJagan Teki error = regulator_enable(ts->vddio); 941ae97fb58SJagan Teki if (error) { 942ae97fb58SJagan Teki dev_err(&client->dev, 943ae97fb58SJagan Teki "Failed to enable VDDIO regulator: %d\n", 944ae97fb58SJagan Teki error); 945ae97fb58SJagan Teki regulator_disable(ts->avdd28); 946ae97fb58SJagan Teki return error; 947ae97fb58SJagan Teki } 948ae97fb58SJagan Teki 949ae97fb58SJagan Teki error = devm_add_action_or_reset(&client->dev, 950ae97fb58SJagan Teki goodix_disable_regulators, ts); 951ae97fb58SJagan Teki if (error) 952ae97fb58SJagan Teki return error; 953ae97fb58SJagan Teki 95449db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_GPIO) { 955ec6e1b40SIrina Tirdea /* reset the controller */ 956ec6e1b40SIrina Tirdea error = goodix_reset(ts); 957ec6e1b40SIrina Tirdea if (error) { 958ec6e1b40SIrina Tirdea dev_err(&client->dev, "Controller reset failed.\n"); 959ec6e1b40SIrina Tirdea return error; 960ec6e1b40SIrina Tirdea } 961ec6e1b40SIrina Tirdea } 962ec6e1b40SIrina Tirdea 963ca96ea86SBastien Nocera error = goodix_i2c_test(client); 964ca96ea86SBastien Nocera if (error) { 965ca96ea86SBastien Nocera dev_err(&client->dev, "I2C communication failure: %d\n", error); 966ca96ea86SBastien Nocera return error; 967ca96ea86SBastien Nocera } 968ca96ea86SBastien Nocera 96968caf858SIrina Tirdea error = goodix_read_version(ts); 970ca96ea86SBastien Nocera if (error) { 971ca96ea86SBastien Nocera dev_err(&client->dev, "Read version failed.\n"); 972ca96ea86SBastien Nocera return error; 973ca96ea86SBastien Nocera } 974ca96ea86SBastien Nocera 97525309004SMarcin Niestroj ts->chip = goodix_get_chip_data(ts->id); 976a779fbc6SIrina Tirdea 97749db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_GPIO) { 97868caf858SIrina Tirdea /* update device config */ 97968caf858SIrina Tirdea ts->cfg_name = devm_kasprintf(&client->dev, GFP_KERNEL, 98068caf858SIrina Tirdea "goodix_%d_cfg.bin", ts->id); 98168caf858SIrina Tirdea if (!ts->cfg_name) 98268caf858SIrina Tirdea return -ENOMEM; 983ca96ea86SBastien Nocera 98468caf858SIrina Tirdea error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name, 98568caf858SIrina Tirdea &client->dev, GFP_KERNEL, ts, 98668caf858SIrina Tirdea goodix_config_cb); 987ca96ea86SBastien Nocera if (error) { 98868caf858SIrina Tirdea dev_err(&client->dev, 98968caf858SIrina Tirdea "Failed to invoke firmware loader: %d\n", 99068caf858SIrina Tirdea error); 991ca96ea86SBastien Nocera return error; 992ca96ea86SBastien Nocera } 993ca96ea86SBastien Nocera 994ca96ea86SBastien Nocera return 0; 99568caf858SIrina Tirdea } else { 99668caf858SIrina Tirdea error = goodix_configure_dev(ts); 99768caf858SIrina Tirdea if (error) 99868caf858SIrina Tirdea return error; 99968caf858SIrina Tirdea } 100068caf858SIrina Tirdea 100168caf858SIrina Tirdea return 0; 100268caf858SIrina Tirdea } 100368caf858SIrina Tirdea 100468caf858SIrina Tirdea static int goodix_ts_remove(struct i2c_client *client) 100568caf858SIrina Tirdea { 100668caf858SIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 100768caf858SIrina Tirdea 100849db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_GPIO) 100968caf858SIrina Tirdea wait_for_completion(&ts->firmware_loading_complete); 101068caf858SIrina Tirdea 101168caf858SIrina Tirdea return 0; 1012ca96ea86SBastien Nocera } 1013ca96ea86SBastien Nocera 10145ab09d6aSIrina Tirdea static int __maybe_unused goodix_suspend(struct device *dev) 10155ab09d6aSIrina Tirdea { 10165ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 10175ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 10185ab09d6aSIrina Tirdea int error; 10195ab09d6aSIrina Tirdea 10205ab09d6aSIrina Tirdea /* We need gpio pins to suspend/resume */ 102149db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1022faec44b6SHans de Goede disable_irq(client->irq); 10235ab09d6aSIrina Tirdea return 0; 1024faec44b6SHans de Goede } 10255ab09d6aSIrina Tirdea 10265ab09d6aSIrina Tirdea wait_for_completion(&ts->firmware_loading_complete); 10275ab09d6aSIrina Tirdea 10285ab09d6aSIrina Tirdea /* Free IRQ as IRQ pin is used as output in the suspend sequence */ 10295ab09d6aSIrina Tirdea goodix_free_irq(ts); 10305ab09d6aSIrina Tirdea 10315ab09d6aSIrina Tirdea /* Output LOW on the INT pin for 5 ms */ 103249db3997SHans de Goede error = goodix_irq_direction_output(ts, 0); 10335ab09d6aSIrina Tirdea if (error) { 10345ab09d6aSIrina Tirdea goodix_request_irq(ts); 10355ab09d6aSIrina Tirdea return error; 10365ab09d6aSIrina Tirdea } 10375ab09d6aSIrina Tirdea 10385ab09d6aSIrina Tirdea usleep_range(5000, 6000); 10395ab09d6aSIrina Tirdea 10405ab09d6aSIrina Tirdea error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND, 10415ab09d6aSIrina Tirdea GOODIX_CMD_SCREEN_OFF); 10425ab09d6aSIrina Tirdea if (error) { 10435ab09d6aSIrina Tirdea dev_err(&ts->client->dev, "Screen off command failed\n"); 104449db3997SHans de Goede goodix_irq_direction_input(ts); 10455ab09d6aSIrina Tirdea goodix_request_irq(ts); 10465ab09d6aSIrina Tirdea return -EAGAIN; 10475ab09d6aSIrina Tirdea } 10485ab09d6aSIrina Tirdea 10495ab09d6aSIrina Tirdea /* 10505ab09d6aSIrina Tirdea * The datasheet specifies that the interval between sending screen-off 10515ab09d6aSIrina Tirdea * command and wake-up should be longer than 58 ms. To avoid waking up 10525ab09d6aSIrina Tirdea * sooner, delay 58ms here. 10535ab09d6aSIrina Tirdea */ 10545ab09d6aSIrina Tirdea msleep(58); 10555ab09d6aSIrina Tirdea return 0; 10565ab09d6aSIrina Tirdea } 10575ab09d6aSIrina Tirdea 10585ab09d6aSIrina Tirdea static int __maybe_unused goodix_resume(struct device *dev) 10595ab09d6aSIrina Tirdea { 10605ab09d6aSIrina Tirdea struct i2c_client *client = to_i2c_client(dev); 10615ab09d6aSIrina Tirdea struct goodix_ts_data *ts = i2c_get_clientdata(client); 10625ab09d6aSIrina Tirdea int error; 10635ab09d6aSIrina Tirdea 106449db3997SHans de Goede if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) { 1065faec44b6SHans de Goede enable_irq(client->irq); 10665ab09d6aSIrina Tirdea return 0; 1067faec44b6SHans de Goede } 10685ab09d6aSIrina Tirdea 10695ab09d6aSIrina Tirdea /* 10705ab09d6aSIrina Tirdea * Exit sleep mode by outputting HIGH level to INT pin 10715ab09d6aSIrina Tirdea * for 2ms~5ms. 10725ab09d6aSIrina Tirdea */ 107349db3997SHans de Goede error = goodix_irq_direction_output(ts, 1); 10745ab09d6aSIrina Tirdea if (error) 10755ab09d6aSIrina Tirdea return error; 10765ab09d6aSIrina Tirdea 10775ab09d6aSIrina Tirdea usleep_range(2000, 5000); 10785ab09d6aSIrina Tirdea 10795ab09d6aSIrina Tirdea error = goodix_int_sync(ts); 10805ab09d6aSIrina Tirdea if (error) 10815ab09d6aSIrina Tirdea return error; 10825ab09d6aSIrina Tirdea 10835ab09d6aSIrina Tirdea error = goodix_request_irq(ts); 10845ab09d6aSIrina Tirdea if (error) 10855ab09d6aSIrina Tirdea return error; 10865ab09d6aSIrina Tirdea 10875ab09d6aSIrina Tirdea return 0; 10885ab09d6aSIrina Tirdea } 10895ab09d6aSIrina Tirdea 10905ab09d6aSIrina Tirdea static SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume); 10915ab09d6aSIrina Tirdea 1092ca96ea86SBastien Nocera static const struct i2c_device_id goodix_ts_id[] = { 1093ca96ea86SBastien Nocera { "GDIX1001:00", 0 }, 1094ca96ea86SBastien Nocera { } 1095ca96ea86SBastien Nocera }; 10962e9e910eSJavier Martinez Canillas MODULE_DEVICE_TABLE(i2c, goodix_ts_id); 1097ca96ea86SBastien Nocera 1098771d8f1bSAleksei Mamlin #ifdef CONFIG_ACPI 1099ca96ea86SBastien Nocera static const struct acpi_device_id goodix_acpi_match[] = { 1100ca96ea86SBastien Nocera { "GDIX1001", 0 }, 11015ca4d1aeSEthan Lee { "GDIX1002", 0 }, 1102ca96ea86SBastien Nocera { } 1103ca96ea86SBastien Nocera }; 1104ca96ea86SBastien Nocera MODULE_DEVICE_TABLE(acpi, goodix_acpi_match); 1105771d8f1bSAleksei Mamlin #endif 1106771d8f1bSAleksei Mamlin 1107771d8f1bSAleksei Mamlin #ifdef CONFIG_OF 1108771d8f1bSAleksei Mamlin static const struct of_device_id goodix_of_match[] = { 110925309004SMarcin Niestroj { .compatible = "goodix,gt1151" }, 1110a5f50c50SJagan Teki { .compatible = "goodix,gt5663" }, 111184ef1b33SGuido Günther { .compatible = "goodix,gt5688" }, 1112771d8f1bSAleksei Mamlin { .compatible = "goodix,gt911" }, 1113771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9110" }, 1114771d8f1bSAleksei Mamlin { .compatible = "goodix,gt912" }, 1115771d8f1bSAleksei Mamlin { .compatible = "goodix,gt927" }, 1116771d8f1bSAleksei Mamlin { .compatible = "goodix,gt9271" }, 1117771d8f1bSAleksei Mamlin { .compatible = "goodix,gt928" }, 1118771d8f1bSAleksei Mamlin { .compatible = "goodix,gt967" }, 1119771d8f1bSAleksei Mamlin { } 1120771d8f1bSAleksei Mamlin }; 1121771d8f1bSAleksei Mamlin MODULE_DEVICE_TABLE(of, goodix_of_match); 1122771d8f1bSAleksei Mamlin #endif 1123ca96ea86SBastien Nocera 1124ca96ea86SBastien Nocera static struct i2c_driver goodix_ts_driver = { 1125ca96ea86SBastien Nocera .probe = goodix_ts_probe, 112668caf858SIrina Tirdea .remove = goodix_ts_remove, 1127ca96ea86SBastien Nocera .id_table = goodix_ts_id, 1128ca96ea86SBastien Nocera .driver = { 1129ca96ea86SBastien Nocera .name = "Goodix-TS", 1130771d8f1bSAleksei Mamlin .acpi_match_table = ACPI_PTR(goodix_acpi_match), 1131771d8f1bSAleksei Mamlin .of_match_table = of_match_ptr(goodix_of_match), 11325ab09d6aSIrina Tirdea .pm = &goodix_pm_ops, 1133ca96ea86SBastien Nocera }, 1134ca96ea86SBastien Nocera }; 1135ca96ea86SBastien Nocera module_i2c_driver(goodix_ts_driver); 1136ca96ea86SBastien Nocera 1137ca96ea86SBastien Nocera MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>"); 1138ca96ea86SBastien Nocera MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>"); 1139ca96ea86SBastien Nocera MODULE_DESCRIPTION("Goodix touchscreen driver"); 1140ca96ea86SBastien Nocera MODULE_LICENSE("GPL v2"); 1141