143c4d13eSSimon Budig /* 243c4d13eSSimon Budig * Copyright (C) 2012 Simon Budig, <simon.budig@kernelconcepts.de> 3fd335ab0SLothar Waßmann * Daniel Wagener <daniel.wagener@kernelconcepts.de> (M09 firmware support) 4dac90dc2SLothar Waßmann * Lothar Waßmann <LW@KARO-electronics.de> (DT support) 543c4d13eSSimon Budig * 643c4d13eSSimon Budig * This software is licensed under the terms of the GNU General Public 743c4d13eSSimon Budig * License version 2, as published by the Free Software Foundation, and 843c4d13eSSimon Budig * may be copied, distributed, and modified under those terms. 943c4d13eSSimon Budig * 1043c4d13eSSimon Budig * This program is distributed in the hope that it will be useful, 1143c4d13eSSimon Budig * but WITHOUT ANY WARRANTY; without even the implied warranty of 1243c4d13eSSimon Budig * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1343c4d13eSSimon Budig * GNU General Public License for more details. 1443c4d13eSSimon Budig * 1543c4d13eSSimon Budig * You should have received a copy of the GNU General Public 1643c4d13eSSimon Budig * License along with this library; if not, write to the Free Software 1743c4d13eSSimon Budig * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 1843c4d13eSSimon Budig */ 1943c4d13eSSimon Budig 2043c4d13eSSimon Budig /* 2143c4d13eSSimon Budig * This is a driver for the EDT "Polytouch" family of touch controllers 2243c4d13eSSimon Budig * based on the FocalTech FT5x06 line of chips. 2343c4d13eSSimon Budig * 2443c4d13eSSimon Budig * Development of this driver has been sponsored by Glyn: 2543c4d13eSSimon Budig * http://www.glyn.com/Products/Displays 2643c4d13eSSimon Budig */ 2743c4d13eSSimon Budig 2843c4d13eSSimon Budig #include <linux/module.h> 2943c4d13eSSimon Budig #include <linux/ratelimit.h> 30f0bef75cSDmitry Torokhov #include <linux/irq.h> 3143c4d13eSSimon Budig #include <linux/interrupt.h> 3243c4d13eSSimon Budig #include <linux/input.h> 3343c4d13eSSimon Budig #include <linux/i2c.h> 3443c4d13eSSimon Budig #include <linux/uaccess.h> 3543c4d13eSSimon Budig #include <linux/delay.h> 3643c4d13eSSimon Budig #include <linux/debugfs.h> 3743c4d13eSSimon Budig #include <linux/slab.h> 3813c23cd1SFranklin S Cooper Jr #include <linux/gpio/consumer.h> 3943c4d13eSSimon Budig #include <linux/input/mt.h> 402c005598SMaxime Ripard #include <linux/input/touchscreen.h> 41b1d2a3ecSFranklin S Cooper Jr #include <linux/of_device.h> 4243c4d13eSSimon Budig 4343c4d13eSSimon Budig #define WORK_REGISTER_THRESHOLD 0x00 4443c4d13eSSimon Budig #define WORK_REGISTER_REPORT_RATE 0x08 4543c4d13eSSimon Budig #define WORK_REGISTER_GAIN 0x30 4643c4d13eSSimon Budig #define WORK_REGISTER_OFFSET 0x31 4743c4d13eSSimon Budig #define WORK_REGISTER_NUM_X 0x33 4843c4d13eSSimon Budig #define WORK_REGISTER_NUM_Y 0x34 4943c4d13eSSimon Budig 50fd335ab0SLothar Waßmann #define M09_REGISTER_THRESHOLD 0x80 51fd335ab0SLothar Waßmann #define M09_REGISTER_GAIN 0x92 52fd335ab0SLothar Waßmann #define M09_REGISTER_OFFSET 0x93 53fd335ab0SLothar Waßmann #define M09_REGISTER_NUM_X 0x94 54fd335ab0SLothar Waßmann #define M09_REGISTER_NUM_Y 0x95 55fd335ab0SLothar Waßmann 56fd335ab0SLothar Waßmann #define NO_REGISTER 0xff 57fd335ab0SLothar Waßmann 5843c4d13eSSimon Budig #define WORK_REGISTER_OPMODE 0x3c 5943c4d13eSSimon Budig #define FACTORY_REGISTER_OPMODE 0x01 6043c4d13eSSimon Budig 6143c4d13eSSimon Budig #define TOUCH_EVENT_DOWN 0x00 6243c4d13eSSimon Budig #define TOUCH_EVENT_UP 0x01 6343c4d13eSSimon Budig #define TOUCH_EVENT_ON 0x02 6443c4d13eSSimon Budig #define TOUCH_EVENT_RESERVED 0x03 6543c4d13eSSimon Budig 6643c4d13eSSimon Budig #define EDT_NAME_LEN 23 6743c4d13eSSimon Budig #define EDT_SWITCH_MODE_RETRIES 10 6843c4d13eSSimon Budig #define EDT_SWITCH_MODE_DELAY 5 /* msec */ 6943c4d13eSSimon Budig #define EDT_RAW_DATA_RETRIES 100 700eeecf60SAniroop Mathur #define EDT_RAW_DATA_DELAY 1000 /* usec */ 7143c4d13eSSimon Budig 72fd335ab0SLothar Waßmann enum edt_ver { 73169110c3SSimon Budig EDT_M06, 74169110c3SSimon Budig EDT_M09, 75aed5d0eeSSimon Budig EDT_M12, 76169110c3SSimon Budig GENERIC_FT, 77fd335ab0SLothar Waßmann }; 78fd335ab0SLothar Waßmann 79fd335ab0SLothar Waßmann struct edt_reg_addr { 80fd335ab0SLothar Waßmann int reg_threshold; 81fd335ab0SLothar Waßmann int reg_report_rate; 82fd335ab0SLothar Waßmann int reg_gain; 83fd335ab0SLothar Waßmann int reg_offset; 84fd335ab0SLothar Waßmann int reg_num_x; 85fd335ab0SLothar Waßmann int reg_num_y; 86fd335ab0SLothar Waßmann }; 87fd335ab0SLothar Waßmann 8843c4d13eSSimon Budig struct edt_ft5x06_ts_data { 8943c4d13eSSimon Budig struct i2c_client *client; 9043c4d13eSSimon Budig struct input_dev *input; 91ad368eb2SHans de Goede struct touchscreen_properties prop; 9243c4d13eSSimon Budig u16 num_x; 9343c4d13eSSimon Budig u16 num_y; 9443c4d13eSSimon Budig 9513c23cd1SFranklin S Cooper Jr struct gpio_desc *reset_gpio; 9613c23cd1SFranklin S Cooper Jr struct gpio_desc *wake_gpio; 97dac90dc2SLothar Waßmann 9843c4d13eSSimon Budig #if defined(CONFIG_DEBUG_FS) 9943c4d13eSSimon Budig struct dentry *debug_dir; 10043c4d13eSSimon Budig u8 *raw_buffer; 10143c4d13eSSimon Budig size_t raw_bufsize; 10243c4d13eSSimon Budig #endif 10343c4d13eSSimon Budig 10443c4d13eSSimon Budig struct mutex mutex; 10543c4d13eSSimon Budig bool factory_mode; 10643c4d13eSSimon Budig int threshold; 10743c4d13eSSimon Budig int gain; 10843c4d13eSSimon Budig int offset; 10943c4d13eSSimon Budig int report_rate; 110b1d2a3ecSFranklin S Cooper Jr int max_support_points; 11143c4d13eSSimon Budig 11243c4d13eSSimon Budig char name[EDT_NAME_LEN]; 113fd335ab0SLothar Waßmann 114fd335ab0SLothar Waßmann struct edt_reg_addr reg_addr; 115fd335ab0SLothar Waßmann enum edt_ver version; 11643c4d13eSSimon Budig }; 11743c4d13eSSimon Budig 118b1d2a3ecSFranklin S Cooper Jr struct edt_i2c_chip_data { 119b1d2a3ecSFranklin S Cooper Jr int max_support_points; 120b1d2a3ecSFranklin S Cooper Jr }; 121b1d2a3ecSFranklin S Cooper Jr 12243c4d13eSSimon Budig static int edt_ft5x06_ts_readwrite(struct i2c_client *client, 12343c4d13eSSimon Budig u16 wr_len, u8 *wr_buf, 12443c4d13eSSimon Budig u16 rd_len, u8 *rd_buf) 12543c4d13eSSimon Budig { 12643c4d13eSSimon Budig struct i2c_msg wrmsg[2]; 12743c4d13eSSimon Budig int i = 0; 12843c4d13eSSimon Budig int ret; 12943c4d13eSSimon Budig 13043c4d13eSSimon Budig if (wr_len) { 13143c4d13eSSimon Budig wrmsg[i].addr = client->addr; 13243c4d13eSSimon Budig wrmsg[i].flags = 0; 13343c4d13eSSimon Budig wrmsg[i].len = wr_len; 13443c4d13eSSimon Budig wrmsg[i].buf = wr_buf; 13543c4d13eSSimon Budig i++; 13643c4d13eSSimon Budig } 13743c4d13eSSimon Budig if (rd_len) { 13843c4d13eSSimon Budig wrmsg[i].addr = client->addr; 13943c4d13eSSimon Budig wrmsg[i].flags = I2C_M_RD; 14043c4d13eSSimon Budig wrmsg[i].len = rd_len; 14143c4d13eSSimon Budig wrmsg[i].buf = rd_buf; 14243c4d13eSSimon Budig i++; 14343c4d13eSSimon Budig } 14443c4d13eSSimon Budig 14543c4d13eSSimon Budig ret = i2c_transfer(client->adapter, wrmsg, i); 14643c4d13eSSimon Budig if (ret < 0) 14743c4d13eSSimon Budig return ret; 14843c4d13eSSimon Budig if (ret != i) 14943c4d13eSSimon Budig return -EIO; 15043c4d13eSSimon Budig 15143c4d13eSSimon Budig return 0; 15243c4d13eSSimon Budig } 15343c4d13eSSimon Budig 15443c4d13eSSimon Budig static bool edt_ft5x06_ts_check_crc(struct edt_ft5x06_ts_data *tsdata, 15543c4d13eSSimon Budig u8 *buf, int buflen) 15643c4d13eSSimon Budig { 15743c4d13eSSimon Budig int i; 15843c4d13eSSimon Budig u8 crc = 0; 15943c4d13eSSimon Budig 16043c4d13eSSimon Budig for (i = 0; i < buflen - 1; i++) 16143c4d13eSSimon Budig crc ^= buf[i]; 16243c4d13eSSimon Budig 16343c4d13eSSimon Budig if (crc != buf[buflen-1]) { 16443c4d13eSSimon Budig dev_err_ratelimited(&tsdata->client->dev, 16543c4d13eSSimon Budig "crc error: 0x%02x expected, got 0x%02x\n", 16643c4d13eSSimon Budig crc, buf[buflen-1]); 16743c4d13eSSimon Budig return false; 16843c4d13eSSimon Budig } 16943c4d13eSSimon Budig 17043c4d13eSSimon Budig return true; 17143c4d13eSSimon Budig } 17243c4d13eSSimon Budig 17343c4d13eSSimon Budig static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) 17443c4d13eSSimon Budig { 17543c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = dev_id; 17643c4d13eSSimon Budig struct device *dev = &tsdata->client->dev; 177fd335ab0SLothar Waßmann u8 cmd; 1789378c025SFranklin S Cooper Jr u8 rdbuf[63]; 17943c4d13eSSimon Budig int i, type, x, y, id; 180c789f1fbSFranklin S Cooper Jr int offset, tplen, datalen, crclen; 18143c4d13eSSimon Budig int error; 18243c4d13eSSimon Budig 183fd335ab0SLothar Waßmann switch (tsdata->version) { 184169110c3SSimon Budig case EDT_M06: 185fd335ab0SLothar Waßmann cmd = 0xf9; /* tell the controller to send touch data */ 186fd335ab0SLothar Waßmann offset = 5; /* where the actual touch data starts */ 187fd335ab0SLothar Waßmann tplen = 4; /* data comes in so called frames */ 188c789f1fbSFranklin S Cooper Jr crclen = 1; /* length of the crc data */ 189fd335ab0SLothar Waßmann break; 190fd335ab0SLothar Waßmann 191169110c3SSimon Budig case EDT_M09: 192aed5d0eeSSimon Budig case EDT_M12: 193169110c3SSimon Budig case GENERIC_FT: 1949378c025SFranklin S Cooper Jr cmd = 0x0; 1959378c025SFranklin S Cooper Jr offset = 3; 196fd335ab0SLothar Waßmann tplen = 6; 197c789f1fbSFranklin S Cooper Jr crclen = 0; 198fd335ab0SLothar Waßmann break; 199fd335ab0SLothar Waßmann 200fd335ab0SLothar Waßmann default: 201fd335ab0SLothar Waßmann goto out; 202fd335ab0SLothar Waßmann } 203fd335ab0SLothar Waßmann 20443c4d13eSSimon Budig memset(rdbuf, 0, sizeof(rdbuf)); 205b1d2a3ecSFranklin S Cooper Jr datalen = tplen * tsdata->max_support_points + offset + crclen; 20643c4d13eSSimon Budig 20743c4d13eSSimon Budig error = edt_ft5x06_ts_readwrite(tsdata->client, 20843c4d13eSSimon Budig sizeof(cmd), &cmd, 209fd335ab0SLothar Waßmann datalen, rdbuf); 21043c4d13eSSimon Budig if (error) { 21143c4d13eSSimon Budig dev_err_ratelimited(dev, "Unable to fetch data, error: %d\n", 21243c4d13eSSimon Budig error); 21343c4d13eSSimon Budig goto out; 21443c4d13eSSimon Budig } 21543c4d13eSSimon Budig 216aed5d0eeSSimon Budig /* M09/M12 does not send header or CRC */ 217169110c3SSimon Budig if (tsdata->version == EDT_M06) { 218fd335ab0SLothar Waßmann if (rdbuf[0] != 0xaa || rdbuf[1] != 0xaa || 219fd335ab0SLothar Waßmann rdbuf[2] != datalen) { 220fd335ab0SLothar Waßmann dev_err_ratelimited(dev, 221fd335ab0SLothar Waßmann "Unexpected header: %02x%02x%02x!\n", 22243c4d13eSSimon Budig rdbuf[0], rdbuf[1], rdbuf[2]); 22343c4d13eSSimon Budig goto out; 22443c4d13eSSimon Budig } 22543c4d13eSSimon Budig 226fd335ab0SLothar Waßmann if (!edt_ft5x06_ts_check_crc(tsdata, rdbuf, datalen)) 22743c4d13eSSimon Budig goto out; 228fd335ab0SLothar Waßmann } 22943c4d13eSSimon Budig 230b1d2a3ecSFranklin S Cooper Jr for (i = 0; i < tsdata->max_support_points; i++) { 231fd335ab0SLothar Waßmann u8 *buf = &rdbuf[i * tplen + offset]; 23243c4d13eSSimon Budig bool down; 23343c4d13eSSimon Budig 23443c4d13eSSimon Budig type = buf[0] >> 6; 23543c4d13eSSimon Budig /* ignore Reserved events */ 23643c4d13eSSimon Budig if (type == TOUCH_EVENT_RESERVED) 23743c4d13eSSimon Budig continue; 23843c4d13eSSimon Budig 239fd335ab0SLothar Waßmann /* M06 sometimes sends bogus coordinates in TOUCH_DOWN */ 240169110c3SSimon Budig if (tsdata->version == EDT_M06 && type == TOUCH_EVENT_DOWN) 241ee3e946eSLothar Waßmann continue; 242ee3e946eSLothar Waßmann 24343c4d13eSSimon Budig x = ((buf[0] << 8) | buf[1]) & 0x0fff; 24443c4d13eSSimon Budig y = ((buf[2] << 8) | buf[3]) & 0x0fff; 24543c4d13eSSimon Budig id = (buf[2] >> 4) & 0x0f; 2461730d814SLothar Waßmann down = type != TOUCH_EVENT_UP; 24743c4d13eSSimon Budig 24843c4d13eSSimon Budig input_mt_slot(tsdata->input, id); 24943c4d13eSSimon Budig input_mt_report_slot_state(tsdata->input, MT_TOOL_FINGER, down); 25043c4d13eSSimon Budig 25143c4d13eSSimon Budig if (!down) 25243c4d13eSSimon Budig continue; 25343c4d13eSSimon Budig 254ad368eb2SHans de Goede touchscreen_report_pos(tsdata->input, &tsdata->prop, x, y, 255ad368eb2SHans de Goede true); 25643c4d13eSSimon Budig } 25743c4d13eSSimon Budig 25843c4d13eSSimon Budig input_mt_report_pointer_emulation(tsdata->input, true); 25943c4d13eSSimon Budig input_sync(tsdata->input); 26043c4d13eSSimon Budig 26143c4d13eSSimon Budig out: 26243c4d13eSSimon Budig return IRQ_HANDLED; 26343c4d13eSSimon Budig } 26443c4d13eSSimon Budig 26543c4d13eSSimon Budig static int edt_ft5x06_register_write(struct edt_ft5x06_ts_data *tsdata, 26643c4d13eSSimon Budig u8 addr, u8 value) 26743c4d13eSSimon Budig { 26843c4d13eSSimon Budig u8 wrbuf[4]; 26943c4d13eSSimon Budig 270fd335ab0SLothar Waßmann switch (tsdata->version) { 271169110c3SSimon Budig case EDT_M06: 27243c4d13eSSimon Budig wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; 27343c4d13eSSimon Budig wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; 27443c4d13eSSimon Budig wrbuf[2] = value; 27543c4d13eSSimon Budig wrbuf[3] = wrbuf[0] ^ wrbuf[1] ^ wrbuf[2]; 276fd335ab0SLothar Waßmann return edt_ft5x06_ts_readwrite(tsdata->client, 4, 277fd335ab0SLothar Waßmann wrbuf, 0, NULL); 278169110c3SSimon Budig case EDT_M09: 279aed5d0eeSSimon Budig case EDT_M12: 280169110c3SSimon Budig case GENERIC_FT: 281fd335ab0SLothar Waßmann wrbuf[0] = addr; 282fd335ab0SLothar Waßmann wrbuf[1] = value; 28343c4d13eSSimon Budig 284cc071acaSRobert Woerle return edt_ft5x06_ts_readwrite(tsdata->client, 2, 285fd335ab0SLothar Waßmann wrbuf, 0, NULL); 286fd335ab0SLothar Waßmann 287fd335ab0SLothar Waßmann default: 288fd335ab0SLothar Waßmann return -EINVAL; 289fd335ab0SLothar Waßmann } 29043c4d13eSSimon Budig } 29143c4d13eSSimon Budig 29243c4d13eSSimon Budig static int edt_ft5x06_register_read(struct edt_ft5x06_ts_data *tsdata, 29343c4d13eSSimon Budig u8 addr) 29443c4d13eSSimon Budig { 29543c4d13eSSimon Budig u8 wrbuf[2], rdbuf[2]; 29643c4d13eSSimon Budig int error; 29743c4d13eSSimon Budig 298fd335ab0SLothar Waßmann switch (tsdata->version) { 299169110c3SSimon Budig case EDT_M06: 30043c4d13eSSimon Budig wrbuf[0] = tsdata->factory_mode ? 0xf3 : 0xfc; 30143c4d13eSSimon Budig wrbuf[1] = tsdata->factory_mode ? addr & 0x7f : addr & 0x3f; 30243c4d13eSSimon Budig wrbuf[1] |= tsdata->factory_mode ? 0x80 : 0x40; 30343c4d13eSSimon Budig 304e2c3ecf0SDan Carpenter error = edt_ft5x06_ts_readwrite(tsdata->client, 2, wrbuf, 2, 305e2c3ecf0SDan Carpenter rdbuf); 306e2c3ecf0SDan Carpenter if (error) 30743c4d13eSSimon Budig return error; 30843c4d13eSSimon Budig 30943c4d13eSSimon Budig if ((wrbuf[0] ^ wrbuf[1] ^ rdbuf[0]) != rdbuf[1]) { 31043c4d13eSSimon Budig dev_err(&tsdata->client->dev, 31143c4d13eSSimon Budig "crc error: 0x%02x expected, got 0x%02x\n", 312fd335ab0SLothar Waßmann wrbuf[0] ^ wrbuf[1] ^ rdbuf[0], 313fd335ab0SLothar Waßmann rdbuf[1]); 31443c4d13eSSimon Budig return -EIO; 31543c4d13eSSimon Budig } 316fd335ab0SLothar Waßmann break; 317fd335ab0SLothar Waßmann 318169110c3SSimon Budig case EDT_M09: 319aed5d0eeSSimon Budig case EDT_M12: 320169110c3SSimon Budig case GENERIC_FT: 321fd335ab0SLothar Waßmann wrbuf[0] = addr; 322fd335ab0SLothar Waßmann error = edt_ft5x06_ts_readwrite(tsdata->client, 1, 323fd335ab0SLothar Waßmann wrbuf, 1, rdbuf); 324fd335ab0SLothar Waßmann if (error) 325fd335ab0SLothar Waßmann return error; 326fd335ab0SLothar Waßmann break; 327fd335ab0SLothar Waßmann 328fd335ab0SLothar Waßmann default: 329fd335ab0SLothar Waßmann return -EINVAL; 330fd335ab0SLothar Waßmann } 33143c4d13eSSimon Budig 33243c4d13eSSimon Budig return rdbuf[0]; 33343c4d13eSSimon Budig } 33443c4d13eSSimon Budig 33543c4d13eSSimon Budig struct edt_ft5x06_attribute { 33643c4d13eSSimon Budig struct device_attribute dattr; 33743c4d13eSSimon Budig size_t field_offset; 33843c4d13eSSimon Budig u8 limit_low; 33943c4d13eSSimon Budig u8 limit_high; 340fd335ab0SLothar Waßmann u8 addr_m06; 341fd335ab0SLothar Waßmann u8 addr_m09; 34243c4d13eSSimon Budig }; 34343c4d13eSSimon Budig 344fd335ab0SLothar Waßmann #define EDT_ATTR(_field, _mode, _addr_m06, _addr_m09, \ 345fd335ab0SLothar Waßmann _limit_low, _limit_high) \ 34643c4d13eSSimon Budig struct edt_ft5x06_attribute edt_ft5x06_attr_##_field = { \ 34743c4d13eSSimon Budig .dattr = __ATTR(_field, _mode, \ 34843c4d13eSSimon Budig edt_ft5x06_setting_show, \ 34943c4d13eSSimon Budig edt_ft5x06_setting_store), \ 350fd335ab0SLothar Waßmann .field_offset = offsetof(struct edt_ft5x06_ts_data, _field), \ 351fd335ab0SLothar Waßmann .addr_m06 = _addr_m06, \ 352fd335ab0SLothar Waßmann .addr_m09 = _addr_m09, \ 35343c4d13eSSimon Budig .limit_low = _limit_low, \ 35443c4d13eSSimon Budig .limit_high = _limit_high, \ 35543c4d13eSSimon Budig } 35643c4d13eSSimon Budig 35743c4d13eSSimon Budig static ssize_t edt_ft5x06_setting_show(struct device *dev, 35843c4d13eSSimon Budig struct device_attribute *dattr, 35943c4d13eSSimon Budig char *buf) 36043c4d13eSSimon Budig { 36143c4d13eSSimon Budig struct i2c_client *client = to_i2c_client(dev); 36243c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); 36343c4d13eSSimon Budig struct edt_ft5x06_attribute *attr = 36443c4d13eSSimon Budig container_of(dattr, struct edt_ft5x06_attribute, dattr); 3651730d814SLothar Waßmann u8 *field = (u8 *)tsdata + attr->field_offset; 36643c4d13eSSimon Budig int val; 36743c4d13eSSimon Budig size_t count = 0; 36843c4d13eSSimon Budig int error = 0; 369fd335ab0SLothar Waßmann u8 addr; 37043c4d13eSSimon Budig 37143c4d13eSSimon Budig mutex_lock(&tsdata->mutex); 37243c4d13eSSimon Budig 37343c4d13eSSimon Budig if (tsdata->factory_mode) { 37443c4d13eSSimon Budig error = -EIO; 37543c4d13eSSimon Budig goto out; 37643c4d13eSSimon Budig } 37743c4d13eSSimon Budig 378fd335ab0SLothar Waßmann switch (tsdata->version) { 379169110c3SSimon Budig case EDT_M06: 380fd335ab0SLothar Waßmann addr = attr->addr_m06; 381fd335ab0SLothar Waßmann break; 382fd335ab0SLothar Waßmann 383169110c3SSimon Budig case EDT_M09: 384aed5d0eeSSimon Budig case EDT_M12: 385169110c3SSimon Budig case GENERIC_FT: 386fd335ab0SLothar Waßmann addr = attr->addr_m09; 387fd335ab0SLothar Waßmann break; 388fd335ab0SLothar Waßmann 389fd335ab0SLothar Waßmann default: 390fd335ab0SLothar Waßmann error = -ENODEV; 391fd335ab0SLothar Waßmann goto out; 392fd335ab0SLothar Waßmann } 393fd335ab0SLothar Waßmann 394fd335ab0SLothar Waßmann if (addr != NO_REGISTER) { 395fd335ab0SLothar Waßmann val = edt_ft5x06_register_read(tsdata, addr); 39643c4d13eSSimon Budig if (val < 0) { 39743c4d13eSSimon Budig error = val; 39843c4d13eSSimon Budig dev_err(&tsdata->client->dev, 39943c4d13eSSimon Budig "Failed to fetch attribute %s, error %d\n", 40043c4d13eSSimon Budig dattr->attr.name, error); 40143c4d13eSSimon Budig goto out; 40243c4d13eSSimon Budig } 403fd335ab0SLothar Waßmann } else { 404fd335ab0SLothar Waßmann val = *field; 405fd335ab0SLothar Waßmann } 40643c4d13eSSimon Budig 40743c4d13eSSimon Budig if (val != *field) { 40843c4d13eSSimon Budig dev_warn(&tsdata->client->dev, 40943c4d13eSSimon Budig "%s: read (%d) and stored value (%d) differ\n", 41043c4d13eSSimon Budig dattr->attr.name, val, *field); 41143c4d13eSSimon Budig *field = val; 41243c4d13eSSimon Budig } 41343c4d13eSSimon Budig 41443c4d13eSSimon Budig count = scnprintf(buf, PAGE_SIZE, "%d\n", val); 41543c4d13eSSimon Budig out: 41643c4d13eSSimon Budig mutex_unlock(&tsdata->mutex); 41743c4d13eSSimon Budig return error ?: count; 41843c4d13eSSimon Budig } 41943c4d13eSSimon Budig 42043c4d13eSSimon Budig static ssize_t edt_ft5x06_setting_store(struct device *dev, 42143c4d13eSSimon Budig struct device_attribute *dattr, 42243c4d13eSSimon Budig const char *buf, size_t count) 42343c4d13eSSimon Budig { 42443c4d13eSSimon Budig struct i2c_client *client = to_i2c_client(dev); 42543c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); 42643c4d13eSSimon Budig struct edt_ft5x06_attribute *attr = 42743c4d13eSSimon Budig container_of(dattr, struct edt_ft5x06_attribute, dattr); 4281730d814SLothar Waßmann u8 *field = (u8 *)tsdata + attr->field_offset; 42943c4d13eSSimon Budig unsigned int val; 43043c4d13eSSimon Budig int error; 431fd335ab0SLothar Waßmann u8 addr; 43243c4d13eSSimon Budig 43343c4d13eSSimon Budig mutex_lock(&tsdata->mutex); 43443c4d13eSSimon Budig 43543c4d13eSSimon Budig if (tsdata->factory_mode) { 43643c4d13eSSimon Budig error = -EIO; 43743c4d13eSSimon Budig goto out; 43843c4d13eSSimon Budig } 43943c4d13eSSimon Budig 44043c4d13eSSimon Budig error = kstrtouint(buf, 0, &val); 44143c4d13eSSimon Budig if (error) 44243c4d13eSSimon Budig goto out; 44343c4d13eSSimon Budig 44443c4d13eSSimon Budig if (val < attr->limit_low || val > attr->limit_high) { 44543c4d13eSSimon Budig error = -ERANGE; 44643c4d13eSSimon Budig goto out; 44743c4d13eSSimon Budig } 44843c4d13eSSimon Budig 449fd335ab0SLothar Waßmann switch (tsdata->version) { 450169110c3SSimon Budig case EDT_M06: 451fd335ab0SLothar Waßmann addr = attr->addr_m06; 452fd335ab0SLothar Waßmann break; 453fd335ab0SLothar Waßmann 454169110c3SSimon Budig case EDT_M09: 455aed5d0eeSSimon Budig case EDT_M12: 456169110c3SSimon Budig case GENERIC_FT: 457fd335ab0SLothar Waßmann addr = attr->addr_m09; 458fd335ab0SLothar Waßmann break; 459fd335ab0SLothar Waßmann 460fd335ab0SLothar Waßmann default: 461fd335ab0SLothar Waßmann error = -ENODEV; 462fd335ab0SLothar Waßmann goto out; 463fd335ab0SLothar Waßmann } 464fd335ab0SLothar Waßmann 465fd335ab0SLothar Waßmann if (addr != NO_REGISTER) { 466fd335ab0SLothar Waßmann error = edt_ft5x06_register_write(tsdata, addr, val); 46743c4d13eSSimon Budig if (error) { 46843c4d13eSSimon Budig dev_err(&tsdata->client->dev, 46943c4d13eSSimon Budig "Failed to update attribute %s, error: %d\n", 47043c4d13eSSimon Budig dattr->attr.name, error); 47143c4d13eSSimon Budig goto out; 47243c4d13eSSimon Budig } 473fd335ab0SLothar Waßmann } 47443c4d13eSSimon Budig *field = val; 47543c4d13eSSimon Budig 47643c4d13eSSimon Budig out: 47743c4d13eSSimon Budig mutex_unlock(&tsdata->mutex); 47843c4d13eSSimon Budig return error ?: count; 47943c4d13eSSimon Budig } 48043c4d13eSSimon Budig 481aed5d0eeSSimon Budig /* m06, m09: range 0-31, m12: range 0-5 */ 482fd335ab0SLothar Waßmann static EDT_ATTR(gain, S_IWUSR | S_IRUGO, WORK_REGISTER_GAIN, 483fd335ab0SLothar Waßmann M09_REGISTER_GAIN, 0, 31); 484aed5d0eeSSimon Budig /* m06, m09: range 0-31, m12: range 0-16 */ 485fd335ab0SLothar Waßmann static EDT_ATTR(offset, S_IWUSR | S_IRUGO, WORK_REGISTER_OFFSET, 486fd335ab0SLothar Waßmann M09_REGISTER_OFFSET, 0, 31); 487aed5d0eeSSimon Budig /* m06: range 20 to 80, m09: range 0 to 30, m12: range 1 to 255... */ 488fd335ab0SLothar Waßmann static EDT_ATTR(threshold, S_IWUSR | S_IRUGO, WORK_REGISTER_THRESHOLD, 489aed5d0eeSSimon Budig M09_REGISTER_THRESHOLD, 0, 255); 490aed5d0eeSSimon Budig /* m06: range 3 to 14, m12: (0x64: 100Hz) */ 491fd335ab0SLothar Waßmann static EDT_ATTR(report_rate, S_IWUSR | S_IRUGO, WORK_REGISTER_REPORT_RATE, 492aed5d0eeSSimon Budig NO_REGISTER, 0, 255); 49343c4d13eSSimon Budig 49443c4d13eSSimon Budig static struct attribute *edt_ft5x06_attrs[] = { 49543c4d13eSSimon Budig &edt_ft5x06_attr_gain.dattr.attr, 49643c4d13eSSimon Budig &edt_ft5x06_attr_offset.dattr.attr, 49743c4d13eSSimon Budig &edt_ft5x06_attr_threshold.dattr.attr, 49843c4d13eSSimon Budig &edt_ft5x06_attr_report_rate.dattr.attr, 49943c4d13eSSimon Budig NULL 50043c4d13eSSimon Budig }; 50143c4d13eSSimon Budig 50243c4d13eSSimon Budig static const struct attribute_group edt_ft5x06_attr_group = { 50343c4d13eSSimon Budig .attrs = edt_ft5x06_attrs, 50443c4d13eSSimon Budig }; 50543c4d13eSSimon Budig 50643c4d13eSSimon Budig #ifdef CONFIG_DEBUG_FS 50743c4d13eSSimon Budig static int edt_ft5x06_factory_mode(struct edt_ft5x06_ts_data *tsdata) 50843c4d13eSSimon Budig { 50943c4d13eSSimon Budig struct i2c_client *client = tsdata->client; 51043c4d13eSSimon Budig int retries = EDT_SWITCH_MODE_RETRIES; 51143c4d13eSSimon Budig int ret; 51243c4d13eSSimon Budig int error; 51343c4d13eSSimon Budig 5144b3e910dSDmitry Torokhov if (tsdata->version != EDT_M06) { 5154b3e910dSDmitry Torokhov dev_err(&client->dev, 5164b3e910dSDmitry Torokhov "No factory mode support for non-M06 devices\n"); 5174b3e910dSDmitry Torokhov return -EINVAL; 5184b3e910dSDmitry Torokhov } 5194b3e910dSDmitry Torokhov 52043c4d13eSSimon Budig disable_irq(client->irq); 52143c4d13eSSimon Budig 52243c4d13eSSimon Budig if (!tsdata->raw_buffer) { 52343c4d13eSSimon Budig tsdata->raw_bufsize = tsdata->num_x * tsdata->num_y * 52443c4d13eSSimon Budig sizeof(u16); 52543c4d13eSSimon Budig tsdata->raw_buffer = kzalloc(tsdata->raw_bufsize, GFP_KERNEL); 52643c4d13eSSimon Budig if (!tsdata->raw_buffer) { 52743c4d13eSSimon Budig error = -ENOMEM; 52843c4d13eSSimon Budig goto err_out; 52943c4d13eSSimon Budig } 53043c4d13eSSimon Budig } 53143c4d13eSSimon Budig 53243c4d13eSSimon Budig /* mode register is 0x3c when in the work mode */ 53343c4d13eSSimon Budig error = edt_ft5x06_register_write(tsdata, WORK_REGISTER_OPMODE, 0x03); 53443c4d13eSSimon Budig if (error) { 53543c4d13eSSimon Budig dev_err(&client->dev, 53643c4d13eSSimon Budig "failed to switch to factory mode, error %d\n", error); 53743c4d13eSSimon Budig goto err_out; 53843c4d13eSSimon Budig } 53943c4d13eSSimon Budig 54043c4d13eSSimon Budig tsdata->factory_mode = true; 54143c4d13eSSimon Budig do { 54243c4d13eSSimon Budig mdelay(EDT_SWITCH_MODE_DELAY); 54343c4d13eSSimon Budig /* mode register is 0x01 when in factory mode */ 54443c4d13eSSimon Budig ret = edt_ft5x06_register_read(tsdata, FACTORY_REGISTER_OPMODE); 54543c4d13eSSimon Budig if (ret == 0x03) 54643c4d13eSSimon Budig break; 54743c4d13eSSimon Budig } while (--retries > 0); 54843c4d13eSSimon Budig 54943c4d13eSSimon Budig if (retries == 0) { 55043c4d13eSSimon Budig dev_err(&client->dev, "not in factory mode after %dms.\n", 55143c4d13eSSimon Budig EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); 55243c4d13eSSimon Budig error = -EIO; 55343c4d13eSSimon Budig goto err_out; 55443c4d13eSSimon Budig } 55543c4d13eSSimon Budig 55643c4d13eSSimon Budig return 0; 55743c4d13eSSimon Budig 55843c4d13eSSimon Budig err_out: 55943c4d13eSSimon Budig kfree(tsdata->raw_buffer); 56043c4d13eSSimon Budig tsdata->raw_buffer = NULL; 56143c4d13eSSimon Budig tsdata->factory_mode = false; 56243c4d13eSSimon Budig enable_irq(client->irq); 56343c4d13eSSimon Budig 56443c4d13eSSimon Budig return error; 56543c4d13eSSimon Budig } 56643c4d13eSSimon Budig 56743c4d13eSSimon Budig static int edt_ft5x06_work_mode(struct edt_ft5x06_ts_data *tsdata) 56843c4d13eSSimon Budig { 56943c4d13eSSimon Budig struct i2c_client *client = tsdata->client; 57043c4d13eSSimon Budig int retries = EDT_SWITCH_MODE_RETRIES; 571fd335ab0SLothar Waßmann struct edt_reg_addr *reg_addr = &tsdata->reg_addr; 57243c4d13eSSimon Budig int ret; 57343c4d13eSSimon Budig int error; 57443c4d13eSSimon Budig 57543c4d13eSSimon Budig /* mode register is 0x01 when in the factory mode */ 57643c4d13eSSimon Budig error = edt_ft5x06_register_write(tsdata, FACTORY_REGISTER_OPMODE, 0x1); 57743c4d13eSSimon Budig if (error) { 57843c4d13eSSimon Budig dev_err(&client->dev, 57943c4d13eSSimon Budig "failed to switch to work mode, error: %d\n", error); 58043c4d13eSSimon Budig return error; 58143c4d13eSSimon Budig } 58243c4d13eSSimon Budig 58343c4d13eSSimon Budig tsdata->factory_mode = false; 58443c4d13eSSimon Budig 58543c4d13eSSimon Budig do { 58643c4d13eSSimon Budig mdelay(EDT_SWITCH_MODE_DELAY); 58743c4d13eSSimon Budig /* mode register is 0x01 when in factory mode */ 58843c4d13eSSimon Budig ret = edt_ft5x06_register_read(tsdata, WORK_REGISTER_OPMODE); 58943c4d13eSSimon Budig if (ret == 0x01) 59043c4d13eSSimon Budig break; 59143c4d13eSSimon Budig } while (--retries > 0); 59243c4d13eSSimon Budig 59343c4d13eSSimon Budig if (retries == 0) { 59443c4d13eSSimon Budig dev_err(&client->dev, "not in work mode after %dms.\n", 59543c4d13eSSimon Budig EDT_SWITCH_MODE_RETRIES * EDT_SWITCH_MODE_DELAY); 59643c4d13eSSimon Budig tsdata->factory_mode = true; 59743c4d13eSSimon Budig return -EIO; 59843c4d13eSSimon Budig } 59943c4d13eSSimon Budig 60043c4d13eSSimon Budig kfree(tsdata->raw_buffer); 60143c4d13eSSimon Budig tsdata->raw_buffer = NULL; 60243c4d13eSSimon Budig 60343c4d13eSSimon Budig /* restore parameters */ 604fd335ab0SLothar Waßmann edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, 60543c4d13eSSimon Budig tsdata->threshold); 606fd335ab0SLothar Waßmann edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, 60743c4d13eSSimon Budig tsdata->gain); 608fd335ab0SLothar Waßmann edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, 60943c4d13eSSimon Budig tsdata->offset); 61047014752SLuca Ceresoli if (reg_addr->reg_report_rate != NO_REGISTER) 611fd335ab0SLothar Waßmann edt_ft5x06_register_write(tsdata, reg_addr->reg_report_rate, 61243c4d13eSSimon Budig tsdata->report_rate); 61343c4d13eSSimon Budig 61443c4d13eSSimon Budig enable_irq(client->irq); 61543c4d13eSSimon Budig 61643c4d13eSSimon Budig return 0; 61743c4d13eSSimon Budig } 61843c4d13eSSimon Budig 61943c4d13eSSimon Budig static int edt_ft5x06_debugfs_mode_get(void *data, u64 *mode) 62043c4d13eSSimon Budig { 62143c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = data; 62243c4d13eSSimon Budig 62343c4d13eSSimon Budig *mode = tsdata->factory_mode; 62443c4d13eSSimon Budig 62543c4d13eSSimon Budig return 0; 62643c4d13eSSimon Budig }; 62743c4d13eSSimon Budig 62843c4d13eSSimon Budig static int edt_ft5x06_debugfs_mode_set(void *data, u64 mode) 62943c4d13eSSimon Budig { 63043c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = data; 63143c4d13eSSimon Budig int retval = 0; 63243c4d13eSSimon Budig 63343c4d13eSSimon Budig if (mode > 1) 63443c4d13eSSimon Budig return -ERANGE; 63543c4d13eSSimon Budig 63643c4d13eSSimon Budig mutex_lock(&tsdata->mutex); 63743c4d13eSSimon Budig 63843c4d13eSSimon Budig if (mode != tsdata->factory_mode) { 63943c4d13eSSimon Budig retval = mode ? edt_ft5x06_factory_mode(tsdata) : 64043c4d13eSSimon Budig edt_ft5x06_work_mode(tsdata); 64143c4d13eSSimon Budig } 64243c4d13eSSimon Budig 64343c4d13eSSimon Budig mutex_unlock(&tsdata->mutex); 64443c4d13eSSimon Budig 64543c4d13eSSimon Budig return retval; 64643c4d13eSSimon Budig }; 64743c4d13eSSimon Budig 64843c4d13eSSimon Budig DEFINE_SIMPLE_ATTRIBUTE(debugfs_mode_fops, edt_ft5x06_debugfs_mode_get, 64943c4d13eSSimon Budig edt_ft5x06_debugfs_mode_set, "%llu\n"); 65043c4d13eSSimon Budig 65143c4d13eSSimon Budig static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, 65243c4d13eSSimon Budig char __user *buf, size_t count, loff_t *off) 65343c4d13eSSimon Budig { 65443c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = file->private_data; 65543c4d13eSSimon Budig struct i2c_client *client = tsdata->client; 65643c4d13eSSimon Budig int retries = EDT_RAW_DATA_RETRIES; 65743c4d13eSSimon Budig int val, i, error; 65843c4d13eSSimon Budig size_t read = 0; 65943c4d13eSSimon Budig int colbytes; 66043c4d13eSSimon Budig char wrbuf[3]; 66143c4d13eSSimon Budig u8 *rdbuf; 66243c4d13eSSimon Budig 66343c4d13eSSimon Budig if (*off < 0 || *off >= tsdata->raw_bufsize) 66443c4d13eSSimon Budig return 0; 66543c4d13eSSimon Budig 66643c4d13eSSimon Budig mutex_lock(&tsdata->mutex); 66743c4d13eSSimon Budig 66843c4d13eSSimon Budig if (!tsdata->factory_mode || !tsdata->raw_buffer) { 66943c4d13eSSimon Budig error = -EIO; 67043c4d13eSSimon Budig goto out; 67143c4d13eSSimon Budig } 67243c4d13eSSimon Budig 67343c4d13eSSimon Budig error = edt_ft5x06_register_write(tsdata, 0x08, 0x01); 67443c4d13eSSimon Budig if (error) { 67543c4d13eSSimon Budig dev_dbg(&client->dev, 67643c4d13eSSimon Budig "failed to write 0x08 register, error %d\n", error); 67743c4d13eSSimon Budig goto out; 67843c4d13eSSimon Budig } 67943c4d13eSSimon Budig 68043c4d13eSSimon Budig do { 6810eeecf60SAniroop Mathur usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100); 68243c4d13eSSimon Budig val = edt_ft5x06_register_read(tsdata, 0x08); 68343c4d13eSSimon Budig if (val < 1) 68443c4d13eSSimon Budig break; 68543c4d13eSSimon Budig } while (--retries > 0); 68643c4d13eSSimon Budig 68743c4d13eSSimon Budig if (val < 0) { 68843c4d13eSSimon Budig error = val; 68943c4d13eSSimon Budig dev_dbg(&client->dev, 69043c4d13eSSimon Budig "failed to read 0x08 register, error %d\n", error); 69143c4d13eSSimon Budig goto out; 69243c4d13eSSimon Budig } 69343c4d13eSSimon Budig 69443c4d13eSSimon Budig if (retries == 0) { 69543c4d13eSSimon Budig dev_dbg(&client->dev, 69643c4d13eSSimon Budig "timed out waiting for register to settle\n"); 69743c4d13eSSimon Budig error = -ETIMEDOUT; 69843c4d13eSSimon Budig goto out; 69943c4d13eSSimon Budig } 70043c4d13eSSimon Budig 70143c4d13eSSimon Budig rdbuf = tsdata->raw_buffer; 70243c4d13eSSimon Budig colbytes = tsdata->num_y * sizeof(u16); 70343c4d13eSSimon Budig 70443c4d13eSSimon Budig wrbuf[0] = 0xf5; 70543c4d13eSSimon Budig wrbuf[1] = 0x0e; 70643c4d13eSSimon Budig for (i = 0; i < tsdata->num_x; i++) { 70743c4d13eSSimon Budig wrbuf[2] = i; /* column index */ 70843c4d13eSSimon Budig error = edt_ft5x06_ts_readwrite(tsdata->client, 70943c4d13eSSimon Budig sizeof(wrbuf), wrbuf, 71043c4d13eSSimon Budig colbytes, rdbuf); 71143c4d13eSSimon Budig if (error) 71243c4d13eSSimon Budig goto out; 71343c4d13eSSimon Budig 71443c4d13eSSimon Budig rdbuf += colbytes; 71543c4d13eSSimon Budig } 71643c4d13eSSimon Budig 71743c4d13eSSimon Budig read = min_t(size_t, count, tsdata->raw_bufsize - *off); 71835b1da4eSAxel Lin if (copy_to_user(buf, tsdata->raw_buffer + *off, read)) { 71935b1da4eSAxel Lin error = -EFAULT; 72035b1da4eSAxel Lin goto out; 72135b1da4eSAxel Lin } 72235b1da4eSAxel Lin 72343c4d13eSSimon Budig *off += read; 72443c4d13eSSimon Budig out: 72543c4d13eSSimon Budig mutex_unlock(&tsdata->mutex); 72643c4d13eSSimon Budig return error ?: read; 72743c4d13eSSimon Budig }; 72843c4d13eSSimon Budig 72943c4d13eSSimon Budig static const struct file_operations debugfs_raw_data_fops = { 730f6c0df6aSWei Yongjun .open = simple_open, 73143c4d13eSSimon Budig .read = edt_ft5x06_debugfs_raw_data_read, 73243c4d13eSSimon Budig }; 73343c4d13eSSimon Budig 7345298cc4cSBill Pemberton static void 73543c4d13eSSimon Budig edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, 73643c4d13eSSimon Budig const char *debugfs_name) 73743c4d13eSSimon Budig { 73843c4d13eSSimon Budig tsdata->debug_dir = debugfs_create_dir(debugfs_name, NULL); 73943c4d13eSSimon Budig if (!tsdata->debug_dir) 74043c4d13eSSimon Budig return; 74143c4d13eSSimon Budig 74243c4d13eSSimon Budig debugfs_create_u16("num_x", S_IRUSR, tsdata->debug_dir, &tsdata->num_x); 74343c4d13eSSimon Budig debugfs_create_u16("num_y", S_IRUSR, tsdata->debug_dir, &tsdata->num_y); 74443c4d13eSSimon Budig 74543c4d13eSSimon Budig debugfs_create_file("mode", S_IRUSR | S_IWUSR, 74643c4d13eSSimon Budig tsdata->debug_dir, tsdata, &debugfs_mode_fops); 74743c4d13eSSimon Budig debugfs_create_file("raw_data", S_IRUSR, 74843c4d13eSSimon Budig tsdata->debug_dir, tsdata, &debugfs_raw_data_fops); 74943c4d13eSSimon Budig } 75043c4d13eSSimon Budig 751e2619cf7SBill Pemberton static void 75243c4d13eSSimon Budig edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) 75343c4d13eSSimon Budig { 75443c4d13eSSimon Budig debugfs_remove_recursive(tsdata->debug_dir); 755a1d0fa77SGuenter Roeck kfree(tsdata->raw_buffer); 75643c4d13eSSimon Budig } 75743c4d13eSSimon Budig 75843c4d13eSSimon Budig #else 75943c4d13eSSimon Budig 76043c4d13eSSimon Budig static inline void 76143c4d13eSSimon Budig edt_ft5x06_ts_prepare_debugfs(struct edt_ft5x06_ts_data *tsdata, 76243c4d13eSSimon Budig const char *debugfs_name) 76343c4d13eSSimon Budig { 76443c4d13eSSimon Budig } 76543c4d13eSSimon Budig 76643c4d13eSSimon Budig static inline void 76743c4d13eSSimon Budig edt_ft5x06_ts_teardown_debugfs(struct edt_ft5x06_ts_data *tsdata) 76843c4d13eSSimon Budig { 76943c4d13eSSimon Budig } 77043c4d13eSSimon Budig 77143c4d13eSSimon Budig #endif /* CONFIG_DEBUGFS */ 77243c4d13eSSimon Budig 7735298cc4cSBill Pemberton static int edt_ft5x06_ts_identify(struct i2c_client *client, 774fd335ab0SLothar Waßmann struct edt_ft5x06_ts_data *tsdata, 77543c4d13eSSimon Budig char *fw_version) 77643c4d13eSSimon Budig { 77743c4d13eSSimon Budig u8 rdbuf[EDT_NAME_LEN]; 77843c4d13eSSimon Budig char *p; 77943c4d13eSSimon Budig int error; 780fd335ab0SLothar Waßmann char *model_name = tsdata->name; 78143c4d13eSSimon Budig 782fd335ab0SLothar Waßmann /* see what we find if we assume it is a M06 * 783fd335ab0SLothar Waßmann * if we get less than EDT_NAME_LEN, we don't want 784fd335ab0SLothar Waßmann * to have garbage in there 785fd335ab0SLothar Waßmann */ 786fd335ab0SLothar Waßmann memset(rdbuf, 0, sizeof(rdbuf)); 787aed5d0eeSSimon Budig error = edt_ft5x06_ts_readwrite(client, 1, "\xBB", 78843c4d13eSSimon Budig EDT_NAME_LEN - 1, rdbuf); 78943c4d13eSSimon Budig if (error) 79043c4d13eSSimon Budig return error; 79143c4d13eSSimon Budig 792aed5d0eeSSimon Budig /* Probe content for something consistent. 793aed5d0eeSSimon Budig * M06 starts with a response byte, M12 gives the data directly. 794aed5d0eeSSimon Budig * M09/Generic does not provide model number information. 795fd335ab0SLothar Waßmann */ 796aed5d0eeSSimon Budig if (!strncasecmp(rdbuf + 1, "EP0", 3)) { 797169110c3SSimon Budig tsdata->version = EDT_M06; 798fd335ab0SLothar Waßmann 79943c4d13eSSimon Budig /* remove last '$' end marker */ 80043c4d13eSSimon Budig rdbuf[EDT_NAME_LEN - 1] = '\0'; 80143c4d13eSSimon Budig if (rdbuf[EDT_NAME_LEN - 2] == '$') 80243c4d13eSSimon Budig rdbuf[EDT_NAME_LEN - 2] = '\0'; 80343c4d13eSSimon Budig 80443c4d13eSSimon Budig /* look for Model/Version separator */ 80543c4d13eSSimon Budig p = strchr(rdbuf, '*'); 80643c4d13eSSimon Budig if (p) 80743c4d13eSSimon Budig *p++ = '\0'; 80843c4d13eSSimon Budig strlcpy(model_name, rdbuf + 1, EDT_NAME_LEN); 80943c4d13eSSimon Budig strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); 810aed5d0eeSSimon Budig } else if (!strncasecmp(rdbuf, "EP0", 3)) { 811aed5d0eeSSimon Budig tsdata->version = EDT_M12; 812aed5d0eeSSimon Budig 813aed5d0eeSSimon Budig /* remove last '$' end marker */ 814aed5d0eeSSimon Budig rdbuf[EDT_NAME_LEN - 2] = '\0'; 815aed5d0eeSSimon Budig if (rdbuf[EDT_NAME_LEN - 3] == '$') 816aed5d0eeSSimon Budig rdbuf[EDT_NAME_LEN - 3] = '\0'; 817aed5d0eeSSimon Budig 818aed5d0eeSSimon Budig /* look for Model/Version separator */ 819aed5d0eeSSimon Budig p = strchr(rdbuf, '*'); 820aed5d0eeSSimon Budig if (p) 821aed5d0eeSSimon Budig *p++ = '\0'; 822aed5d0eeSSimon Budig strlcpy(model_name, rdbuf, EDT_NAME_LEN); 823aed5d0eeSSimon Budig strlcpy(fw_version, p ? p : "", EDT_NAME_LEN); 824fd335ab0SLothar Waßmann } else { 825aed5d0eeSSimon Budig /* If it is not an EDT M06/M12 touchscreen, then the model 826169110c3SSimon Budig * detection is a bit hairy. The different ft5x06 827169110c3SSimon Budig * firmares around don't reliably implement the 828169110c3SSimon Budig * identification registers. Well, we'll take a shot. 829169110c3SSimon Budig * 830169110c3SSimon Budig * The main difference between generic focaltec based 831169110c3SSimon Budig * touches and EDT M09 is that we know how to retrieve 832169110c3SSimon Budig * the max coordinates for the latter. 833169110c3SSimon Budig */ 834169110c3SSimon Budig tsdata->version = GENERIC_FT; 835fd335ab0SLothar Waßmann 836fd335ab0SLothar Waßmann error = edt_ft5x06_ts_readwrite(client, 1, "\xA6", 837fd335ab0SLothar Waßmann 2, rdbuf); 838fd335ab0SLothar Waßmann if (error) 839fd335ab0SLothar Waßmann return error; 840fd335ab0SLothar Waßmann 841fd335ab0SLothar Waßmann strlcpy(fw_version, rdbuf, 2); 842fd335ab0SLothar Waßmann 843fd335ab0SLothar Waßmann error = edt_ft5x06_ts_readwrite(client, 1, "\xA8", 844fd335ab0SLothar Waßmann 1, rdbuf); 845fd335ab0SLothar Waßmann if (error) 846fd335ab0SLothar Waßmann return error; 847fd335ab0SLothar Waßmann 848169110c3SSimon Budig /* This "model identification" is not exact. Unfortunately 849169110c3SSimon Budig * not all firmwares for the ft5x06 put useful values in 850169110c3SSimon Budig * the identification registers. 851169110c3SSimon Budig */ 852169110c3SSimon Budig switch (rdbuf[0]) { 853169110c3SSimon Budig case 0x35: /* EDT EP0350M09 */ 854169110c3SSimon Budig case 0x43: /* EDT EP0430M09 */ 855169110c3SSimon Budig case 0x50: /* EDT EP0500M09 */ 856169110c3SSimon Budig case 0x57: /* EDT EP0570M09 */ 857169110c3SSimon Budig case 0x70: /* EDT EP0700M09 */ 858169110c3SSimon Budig tsdata->version = EDT_M09; 859fd335ab0SLothar Waßmann snprintf(model_name, EDT_NAME_LEN, "EP0%i%i0M09", 860fd335ab0SLothar Waßmann rdbuf[0] >> 4, rdbuf[0] & 0x0F); 861169110c3SSimon Budig break; 862169110c3SSimon Budig case 0xa1: /* EDT EP1010ML00 */ 863169110c3SSimon Budig tsdata->version = EDT_M09; 864169110c3SSimon Budig snprintf(model_name, EDT_NAME_LEN, "EP%i%i0ML00", 865169110c3SSimon Budig rdbuf[0] >> 4, rdbuf[0] & 0x0F); 866169110c3SSimon Budig break; 867169110c3SSimon Budig case 0x5a: /* Solomon Goldentek Display */ 868169110c3SSimon Budig snprintf(model_name, EDT_NAME_LEN, "GKTW50SCED1R0"); 869169110c3SSimon Budig break; 870169110c3SSimon Budig default: 871169110c3SSimon Budig snprintf(model_name, EDT_NAME_LEN, 872169110c3SSimon Budig "generic ft5x06 (%02x)", 873169110c3SSimon Budig rdbuf[0]); 874169110c3SSimon Budig break; 875169110c3SSimon Budig } 876fd335ab0SLothar Waßmann } 87743c4d13eSSimon Budig 87843c4d13eSSimon Budig return 0; 87943c4d13eSSimon Budig } 88043c4d13eSSimon Budig 8812e23b7a9SDmitry Torokhov static void edt_ft5x06_ts_get_defaults(struct device *dev, 882dac90dc2SLothar Waßmann struct edt_ft5x06_ts_data *tsdata) 883dac90dc2SLothar Waßmann { 884fd335ab0SLothar Waßmann struct edt_reg_addr *reg_addr = &tsdata->reg_addr; 8852e23b7a9SDmitry Torokhov u32 val; 8862e23b7a9SDmitry Torokhov int error; 887fd335ab0SLothar Waßmann 8882e23b7a9SDmitry Torokhov error = device_property_read_u32(dev, "threshold", &val); 889dc262dfaSPhilipp Zabel if (!error) { 890dc262dfaSPhilipp Zabel edt_ft5x06_register_write(tsdata, reg_addr->reg_threshold, val); 891dc262dfaSPhilipp Zabel tsdata->threshold = val; 892dc262dfaSPhilipp Zabel } 8932e23b7a9SDmitry Torokhov 8942e23b7a9SDmitry Torokhov error = device_property_read_u32(dev, "gain", &val); 895dc262dfaSPhilipp Zabel if (!error) { 896dc262dfaSPhilipp Zabel edt_ft5x06_register_write(tsdata, reg_addr->reg_gain, val); 897dc262dfaSPhilipp Zabel tsdata->gain = val; 898dc262dfaSPhilipp Zabel } 8992e23b7a9SDmitry Torokhov 9002e23b7a9SDmitry Torokhov error = device_property_read_u32(dev, "offset", &val); 901dc262dfaSPhilipp Zabel if (!error) { 902dc262dfaSPhilipp Zabel edt_ft5x06_register_write(tsdata, reg_addr->reg_offset, val); 903dc262dfaSPhilipp Zabel tsdata->offset = val; 904dc262dfaSPhilipp Zabel } 905dac90dc2SLothar Waßmann } 906dac90dc2SLothar Waßmann 9075298cc4cSBill Pemberton static void 90843c4d13eSSimon Budig edt_ft5x06_ts_get_parameters(struct edt_ft5x06_ts_data *tsdata) 90943c4d13eSSimon Budig { 910fd335ab0SLothar Waßmann struct edt_reg_addr *reg_addr = &tsdata->reg_addr; 911fd335ab0SLothar Waßmann 91243c4d13eSSimon Budig tsdata->threshold = edt_ft5x06_register_read(tsdata, 913fd335ab0SLothar Waßmann reg_addr->reg_threshold); 914fd335ab0SLothar Waßmann tsdata->gain = edt_ft5x06_register_read(tsdata, reg_addr->reg_gain); 915fd335ab0SLothar Waßmann tsdata->offset = edt_ft5x06_register_read(tsdata, reg_addr->reg_offset); 916fd335ab0SLothar Waßmann if (reg_addr->reg_report_rate != NO_REGISTER) 91743c4d13eSSimon Budig tsdata->report_rate = edt_ft5x06_register_read(tsdata, 918fd335ab0SLothar Waßmann reg_addr->reg_report_rate); 919169110c3SSimon Budig if (tsdata->version == EDT_M06 || 920aed5d0eeSSimon Budig tsdata->version == EDT_M09 || 921aed5d0eeSSimon Budig tsdata->version == EDT_M12) { 922169110c3SSimon Budig tsdata->num_x = edt_ft5x06_register_read(tsdata, 923169110c3SSimon Budig reg_addr->reg_num_x); 924169110c3SSimon Budig tsdata->num_y = edt_ft5x06_register_read(tsdata, 925169110c3SSimon Budig reg_addr->reg_num_y); 926169110c3SSimon Budig } else { 927169110c3SSimon Budig tsdata->num_x = -1; 928169110c3SSimon Budig tsdata->num_y = -1; 929169110c3SSimon Budig } 930fd335ab0SLothar Waßmann } 931fd335ab0SLothar Waßmann 932fd335ab0SLothar Waßmann static void 933fd335ab0SLothar Waßmann edt_ft5x06_ts_set_regs(struct edt_ft5x06_ts_data *tsdata) 934fd335ab0SLothar Waßmann { 935fd335ab0SLothar Waßmann struct edt_reg_addr *reg_addr = &tsdata->reg_addr; 936fd335ab0SLothar Waßmann 937fd335ab0SLothar Waßmann switch (tsdata->version) { 938169110c3SSimon Budig case EDT_M06: 939fd335ab0SLothar Waßmann reg_addr->reg_threshold = WORK_REGISTER_THRESHOLD; 940fd335ab0SLothar Waßmann reg_addr->reg_report_rate = WORK_REGISTER_REPORT_RATE; 941fd335ab0SLothar Waßmann reg_addr->reg_gain = WORK_REGISTER_GAIN; 942fd335ab0SLothar Waßmann reg_addr->reg_offset = WORK_REGISTER_OFFSET; 943fd335ab0SLothar Waßmann reg_addr->reg_num_x = WORK_REGISTER_NUM_X; 944fd335ab0SLothar Waßmann reg_addr->reg_num_y = WORK_REGISTER_NUM_Y; 945fd335ab0SLothar Waßmann break; 946fd335ab0SLothar Waßmann 947169110c3SSimon Budig case EDT_M09: 948aed5d0eeSSimon Budig case EDT_M12: 949fd335ab0SLothar Waßmann reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; 95047014752SLuca Ceresoli reg_addr->reg_report_rate = NO_REGISTER; 951fd335ab0SLothar Waßmann reg_addr->reg_gain = M09_REGISTER_GAIN; 952fd335ab0SLothar Waßmann reg_addr->reg_offset = M09_REGISTER_OFFSET; 953fd335ab0SLothar Waßmann reg_addr->reg_num_x = M09_REGISTER_NUM_X; 954fd335ab0SLothar Waßmann reg_addr->reg_num_y = M09_REGISTER_NUM_Y; 955fd335ab0SLothar Waßmann break; 956169110c3SSimon Budig 957169110c3SSimon Budig case GENERIC_FT: 958169110c3SSimon Budig /* this is a guesswork */ 959169110c3SSimon Budig reg_addr->reg_threshold = M09_REGISTER_THRESHOLD; 960169110c3SSimon Budig reg_addr->reg_gain = M09_REGISTER_GAIN; 961169110c3SSimon Budig reg_addr->reg_offset = M09_REGISTER_OFFSET; 962169110c3SSimon Budig break; 963fd335ab0SLothar Waßmann } 96443c4d13eSSimon Budig } 96543c4d13eSSimon Budig 9665298cc4cSBill Pemberton static int edt_ft5x06_ts_probe(struct i2c_client *client, 96743c4d13eSSimon Budig const struct i2c_device_id *id) 96843c4d13eSSimon Budig { 969b1d2a3ecSFranklin S Cooper Jr const struct edt_i2c_chip_data *chip_data; 97043c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata; 97143c4d13eSSimon Budig struct input_dev *input; 972f0bef75cSDmitry Torokhov unsigned long irq_flags; 97343c4d13eSSimon Budig int error; 97443c4d13eSSimon Budig char fw_version[EDT_NAME_LEN]; 97543c4d13eSSimon Budig 97643c4d13eSSimon Budig dev_dbg(&client->dev, "probing for EDT FT5x06 I2C\n"); 97743c4d13eSSimon Budig 97802300bd6SLothar Waßmann tsdata = devm_kzalloc(&client->dev, sizeof(*tsdata), GFP_KERNEL); 97902300bd6SLothar Waßmann if (!tsdata) { 98043c4d13eSSimon Budig dev_err(&client->dev, "failed to allocate driver data.\n"); 98102300bd6SLothar Waßmann return -ENOMEM; 98202300bd6SLothar Waßmann } 98302300bd6SLothar Waßmann 984b1d2a3ecSFranklin S Cooper Jr chip_data = of_device_get_match_data(&client->dev); 985b1d2a3ecSFranklin S Cooper Jr if (!chip_data) 986b1d2a3ecSFranklin S Cooper Jr chip_data = (const struct edt_i2c_chip_data *)id->driver_data; 987b1d2a3ecSFranklin S Cooper Jr if (!chip_data || !chip_data->max_support_points) { 988b1d2a3ecSFranklin S Cooper Jr dev_err(&client->dev, "invalid or missing chip data\n"); 989b1d2a3ecSFranklin S Cooper Jr return -EINVAL; 990b1d2a3ecSFranklin S Cooper Jr } 991b1d2a3ecSFranklin S Cooper Jr 992b1d2a3ecSFranklin S Cooper Jr tsdata->max_support_points = chip_data->max_support_points; 993b1d2a3ecSFranklin S Cooper Jr 99413c23cd1SFranklin S Cooper Jr tsdata->reset_gpio = devm_gpiod_get_optional(&client->dev, 99513c23cd1SFranklin S Cooper Jr "reset", GPIOD_OUT_HIGH); 99613c23cd1SFranklin S Cooper Jr if (IS_ERR(tsdata->reset_gpio)) { 99713c23cd1SFranklin S Cooper Jr error = PTR_ERR(tsdata->reset_gpio); 998dac90dc2SLothar Waßmann dev_err(&client->dev, 99913c23cd1SFranklin S Cooper Jr "Failed to request GPIO reset pin, error %d\n", error); 1000dac90dc2SLothar Waßmann return error; 1001dac90dc2SLothar Waßmann } 1002dac90dc2SLothar Waßmann 100313c23cd1SFranklin S Cooper Jr tsdata->wake_gpio = devm_gpiod_get_optional(&client->dev, 100413c23cd1SFranklin S Cooper Jr "wake", GPIOD_OUT_LOW); 100513c23cd1SFranklin S Cooper Jr if (IS_ERR(tsdata->wake_gpio)) { 100613c23cd1SFranklin S Cooper Jr error = PTR_ERR(tsdata->wake_gpio); 1007dac90dc2SLothar Waßmann dev_err(&client->dev, 100813c23cd1SFranklin S Cooper Jr "Failed to request GPIO wake pin, error %d\n", error); 1009dac90dc2SLothar Waßmann return error; 1010dac90dc2SLothar Waßmann } 101113c23cd1SFranklin S Cooper Jr 101213c23cd1SFranklin S Cooper Jr if (tsdata->wake_gpio) { 101313c23cd1SFranklin S Cooper Jr usleep_range(5000, 6000); 101413c23cd1SFranklin S Cooper Jr gpiod_set_value_cansleep(tsdata->wake_gpio, 1); 101513c23cd1SFranklin S Cooper Jr } 101613c23cd1SFranklin S Cooper Jr 101713c23cd1SFranklin S Cooper Jr if (tsdata->reset_gpio) { 101813c23cd1SFranklin S Cooper Jr usleep_range(5000, 6000); 101913c23cd1SFranklin S Cooper Jr gpiod_set_value_cansleep(tsdata->reset_gpio, 0); 102013c23cd1SFranklin S Cooper Jr msleep(300); 1021dac90dc2SLothar Waßmann } 1022dac90dc2SLothar Waßmann 102302300bd6SLothar Waßmann input = devm_input_allocate_device(&client->dev); 102402300bd6SLothar Waßmann if (!input) { 102502300bd6SLothar Waßmann dev_err(&client->dev, "failed to allocate input device.\n"); 102602300bd6SLothar Waßmann return -ENOMEM; 102743c4d13eSSimon Budig } 102843c4d13eSSimon Budig 102943c4d13eSSimon Budig mutex_init(&tsdata->mutex); 103043c4d13eSSimon Budig tsdata->client = client; 103143c4d13eSSimon Budig tsdata->input = input; 103243c4d13eSSimon Budig tsdata->factory_mode = false; 103343c4d13eSSimon Budig 1034fd335ab0SLothar Waßmann error = edt_ft5x06_ts_identify(client, tsdata, fw_version); 103543c4d13eSSimon Budig if (error) { 103643c4d13eSSimon Budig dev_err(&client->dev, "touchscreen probe failed\n"); 103702300bd6SLothar Waßmann return error; 103843c4d13eSSimon Budig } 103943c4d13eSSimon Budig 1040fd335ab0SLothar Waßmann edt_ft5x06_ts_set_regs(tsdata); 10412e23b7a9SDmitry Torokhov edt_ft5x06_ts_get_defaults(&client->dev, tsdata); 104243c4d13eSSimon Budig edt_ft5x06_ts_get_parameters(tsdata); 104343c4d13eSSimon Budig 104443c4d13eSSimon Budig dev_dbg(&client->dev, 104543c4d13eSSimon Budig "Model \"%s\", Rev. \"%s\", %dx%d sensors\n", 104643c4d13eSSimon Budig tsdata->name, fw_version, tsdata->num_x, tsdata->num_y); 104743c4d13eSSimon Budig 104843c4d13eSSimon Budig input->name = tsdata->name; 104943c4d13eSSimon Budig input->id.bustype = BUS_I2C; 105043c4d13eSSimon Budig input->dev.parent = &client->dev; 105143c4d13eSSimon Budig 1052169110c3SSimon Budig if (tsdata->version == EDT_M06 || 1053aed5d0eeSSimon Budig tsdata->version == EDT_M09 || 1054aed5d0eeSSimon Budig tsdata->version == EDT_M12) { 105543c4d13eSSimon Budig input_set_abs_params(input, ABS_MT_POSITION_X, 105643c4d13eSSimon Budig 0, tsdata->num_x * 64 - 1, 0, 0); 105743c4d13eSSimon Budig input_set_abs_params(input, ABS_MT_POSITION_Y, 105843c4d13eSSimon Budig 0, tsdata->num_y * 64 - 1, 0, 0); 1059169110c3SSimon Budig } else { 1060169110c3SSimon Budig /* Unknown maximum values. Specify via devicetree */ 1061169110c3SSimon Budig input_set_abs_params(input, ABS_MT_POSITION_X, 1062169110c3SSimon Budig 0, 65535, 0, 0); 1063169110c3SSimon Budig input_set_abs_params(input, ABS_MT_POSITION_Y, 1064169110c3SSimon Budig 0, 65535, 0, 0); 1065169110c3SSimon Budig } 10662c005598SMaxime Ripard 1067ad368eb2SHans de Goede touchscreen_parse_properties(input, true, &tsdata->prop); 10682c005598SMaxime Ripard 1069b1d2a3ecSFranklin S Cooper Jr error = input_mt_init_slots(input, tsdata->max_support_points, 1070b1d2a3ecSFranklin S Cooper Jr INPUT_MT_DIRECT); 107143c4d13eSSimon Budig if (error) { 107243c4d13eSSimon Budig dev_err(&client->dev, "Unable to init MT slots.\n"); 107302300bd6SLothar Waßmann return error; 107443c4d13eSSimon Budig } 107543c4d13eSSimon Budig 107643c4d13eSSimon Budig i2c_set_clientdata(client, tsdata); 107743c4d13eSSimon Budig 1078f0bef75cSDmitry Torokhov irq_flags = irq_get_trigger_type(client->irq); 1079f0bef75cSDmitry Torokhov if (irq_flags == IRQF_TRIGGER_NONE) 1080f0bef75cSDmitry Torokhov irq_flags = IRQF_TRIGGER_FALLING; 1081f0bef75cSDmitry Torokhov irq_flags |= IRQF_ONESHOT; 1082f0bef75cSDmitry Torokhov 1083f0bef75cSDmitry Torokhov error = devm_request_threaded_irq(&client->dev, client->irq, 1084f0bef75cSDmitry Torokhov NULL, edt_ft5x06_ts_isr, irq_flags, 108543c4d13eSSimon Budig client->name, tsdata); 108643c4d13eSSimon Budig if (error) { 108743c4d13eSSimon Budig dev_err(&client->dev, "Unable to request touchscreen IRQ.\n"); 108802300bd6SLothar Waßmann return error; 108943c4d13eSSimon Budig } 109043c4d13eSSimon Budig 1091e3adf559SAndi Shyti error = devm_device_add_group(&client->dev, &edt_ft5x06_attr_group); 109243c4d13eSSimon Budig if (error) 109302300bd6SLothar Waßmann return error; 109443c4d13eSSimon Budig 109543c4d13eSSimon Budig error = input_register_device(input); 1096dac90dc2SLothar Waßmann if (error) 1097e3adf559SAndi Shyti return error; 109843c4d13eSSimon Budig 109943c4d13eSSimon Budig edt_ft5x06_ts_prepare_debugfs(tsdata, dev_driver_string(&client->dev)); 110043c4d13eSSimon Budig device_init_wakeup(&client->dev, 1); 110143c4d13eSSimon Budig 110243c4d13eSSimon Budig dev_dbg(&client->dev, 1103dac90dc2SLothar Waßmann "EDT FT5x06 initialized: IRQ %d, WAKE pin %d, Reset pin %d.\n", 11048b58cc36SFranklin S Cooper Jr client->irq, 11058b58cc36SFranklin S Cooper Jr tsdata->wake_gpio ? desc_to_gpio(tsdata->wake_gpio) : -1, 11068b58cc36SFranklin S Cooper Jr tsdata->reset_gpio ? desc_to_gpio(tsdata->reset_gpio) : -1); 110743c4d13eSSimon Budig 110843c4d13eSSimon Budig return 0; 110943c4d13eSSimon Budig } 111043c4d13eSSimon Budig 1111e2619cf7SBill Pemberton static int edt_ft5x06_ts_remove(struct i2c_client *client) 111243c4d13eSSimon Budig { 111343c4d13eSSimon Budig struct edt_ft5x06_ts_data *tsdata = i2c_get_clientdata(client); 111443c4d13eSSimon Budig 111543c4d13eSSimon Budig edt_ft5x06_ts_teardown_debugfs(tsdata); 111643c4d13eSSimon Budig 111743c4d13eSSimon Budig return 0; 111843c4d13eSSimon Budig } 111943c4d13eSSimon Budig 112002b6a58bSJingoo Han static int __maybe_unused edt_ft5x06_ts_suspend(struct device *dev) 112143c4d13eSSimon Budig { 112243c4d13eSSimon Budig struct i2c_client *client = to_i2c_client(dev); 112343c4d13eSSimon Budig 112443c4d13eSSimon Budig if (device_may_wakeup(dev)) 112543c4d13eSSimon Budig enable_irq_wake(client->irq); 112643c4d13eSSimon Budig 112743c4d13eSSimon Budig return 0; 112843c4d13eSSimon Budig } 112943c4d13eSSimon Budig 113002b6a58bSJingoo Han static int __maybe_unused edt_ft5x06_ts_resume(struct device *dev) 113143c4d13eSSimon Budig { 113243c4d13eSSimon Budig struct i2c_client *client = to_i2c_client(dev); 113343c4d13eSSimon Budig 113443c4d13eSSimon Budig if (device_may_wakeup(dev)) 113543c4d13eSSimon Budig disable_irq_wake(client->irq); 113643c4d13eSSimon Budig 113743c4d13eSSimon Budig return 0; 113843c4d13eSSimon Budig } 113943c4d13eSSimon Budig 114043c4d13eSSimon Budig static SIMPLE_DEV_PM_OPS(edt_ft5x06_ts_pm_ops, 114143c4d13eSSimon Budig edt_ft5x06_ts_suspend, edt_ft5x06_ts_resume); 114243c4d13eSSimon Budig 1143b1d2a3ecSFranklin S Cooper Jr static const struct edt_i2c_chip_data edt_ft5x06_data = { 1144b1d2a3ecSFranklin S Cooper Jr .max_support_points = 5, 1145b1d2a3ecSFranklin S Cooper Jr }; 1146b1d2a3ecSFranklin S Cooper Jr 1147af33e0adSFranklin S Cooper Jr static const struct edt_i2c_chip_data edt_ft5506_data = { 1148af33e0adSFranklin S Cooper Jr .max_support_points = 10, 1149af33e0adSFranklin S Cooper Jr }; 1150af33e0adSFranklin S Cooper Jr 1151d1871654SHans de Goede static const struct edt_i2c_chip_data edt_ft6236_data = { 1152d1871654SHans de Goede .max_support_points = 2, 1153d1871654SHans de Goede }; 1154d1871654SHans de Goede 115543c4d13eSSimon Budig static const struct i2c_device_id edt_ft5x06_ts_id[] = { 1156b1d2a3ecSFranklin S Cooper Jr { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data }, 1157af33e0adSFranklin S Cooper Jr { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data }, 1158d1871654SHans de Goede /* Note no edt- prefix for compatibility with the ft6236.c driver */ 1159d1871654SHans de Goede { .name = "ft6236", .driver_data = (long)&edt_ft6236_data }, 11601730d814SLothar Waßmann { /* sentinel */ } 116143c4d13eSSimon Budig }; 116243c4d13eSSimon Budig MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); 116343c4d13eSSimon Budig 1164dac90dc2SLothar Waßmann #ifdef CONFIG_OF 1165dac90dc2SLothar Waßmann static const struct of_device_id edt_ft5x06_of_match[] = { 1166b1d2a3ecSFranklin S Cooper Jr { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data }, 1167b1d2a3ecSFranklin S Cooper Jr { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, 1168b1d2a3ecSFranklin S Cooper Jr { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, 1169af33e0adSFranklin S Cooper Jr { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, 1170d1871654SHans de Goede /* Note focaltech vendor prefix for compatibility with ft6236.c */ 1171d1871654SHans de Goede { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data }, 1172dac90dc2SLothar Waßmann { /* sentinel */ } 1173dac90dc2SLothar Waßmann }; 1174dac90dc2SLothar Waßmann MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); 1175dac90dc2SLothar Waßmann #endif 1176dac90dc2SLothar Waßmann 117743c4d13eSSimon Budig static struct i2c_driver edt_ft5x06_ts_driver = { 117843c4d13eSSimon Budig .driver = { 117943c4d13eSSimon Budig .name = "edt_ft5x06", 1180dac90dc2SLothar Waßmann .of_match_table = of_match_ptr(edt_ft5x06_of_match), 118143c4d13eSSimon Budig .pm = &edt_ft5x06_ts_pm_ops, 118243c4d13eSSimon Budig }, 118343c4d13eSSimon Budig .id_table = edt_ft5x06_ts_id, 118443c4d13eSSimon Budig .probe = edt_ft5x06_ts_probe, 11851cb0aa88SBill Pemberton .remove = edt_ft5x06_ts_remove, 118643c4d13eSSimon Budig }; 118743c4d13eSSimon Budig 118843c4d13eSSimon Budig module_i2c_driver(edt_ft5x06_ts_driver); 118943c4d13eSSimon Budig 119043c4d13eSSimon Budig MODULE_AUTHOR("Simon Budig <simon.budig@kernelconcepts.de>"); 119143c4d13eSSimon Budig MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver"); 119243c4d13eSSimon Budig MODULE_LICENSE("GPL"); 1193