1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 26ccb1d8fSSangwon Jee /* 36ccb1d8fSSangwon Jee * MELFAS MIP4 Touchscreen 46ccb1d8fSSangwon Jee * 56ccb1d8fSSangwon Jee * Copyright (C) 2016 MELFAS Inc. 66ccb1d8fSSangwon Jee * 76ccb1d8fSSangwon Jee * Author : Sangwon Jee <jeesw@melfas.com> 86ccb1d8fSSangwon Jee */ 96ccb1d8fSSangwon Jee 106ccb1d8fSSangwon Jee #include <linux/acpi.h> 116ccb1d8fSSangwon Jee #include <linux/delay.h> 126ccb1d8fSSangwon Jee #include <linux/firmware.h> 136ccb1d8fSSangwon Jee #include <linux/gpio/consumer.h> 146ccb1d8fSSangwon Jee #include <linux/i2c.h> 156ccb1d8fSSangwon Jee #include <linux/input.h> 166ccb1d8fSSangwon Jee #include <linux/input/mt.h> 176ccb1d8fSSangwon Jee #include <linux/interrupt.h> 186ccb1d8fSSangwon Jee #include <linux/module.h> 196ccb1d8fSSangwon Jee #include <linux/of.h> 206ccb1d8fSSangwon Jee #include <linux/slab.h> 216ccb1d8fSSangwon Jee #include <asm/unaligned.h> 226ccb1d8fSSangwon Jee 236ccb1d8fSSangwon Jee #define MIP4_DEVICE_NAME "mip4_ts" 246ccb1d8fSSangwon Jee 256ccb1d8fSSangwon Jee /***************************************************************** 266ccb1d8fSSangwon Jee * Protocol 27e2aad666SSangwon Jee * Version : MIP 4.0 Rev 5.4 286ccb1d8fSSangwon Jee *****************************************************************/ 296ccb1d8fSSangwon Jee 306ccb1d8fSSangwon Jee /* Address */ 316ccb1d8fSSangwon Jee #define MIP4_R0_BOOT 0x00 326ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_MODE 0x01 336ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_BUF_ADDR 0x10 346ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_STATUS 0x20 356ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_CMD 0x30 366ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_TARGET_ADDR 0x40 376ccb1d8fSSangwon Jee #define MIP4_R1_BOOT_SIZE 0x44 386ccb1d8fSSangwon Jee 396ccb1d8fSSangwon Jee #define MIP4_R0_INFO 0x01 406ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PRODUCT_NAME 0x00 416ccb1d8fSSangwon Jee #define MIP4_R1_INFO_RESOLUTION_X 0x10 426ccb1d8fSSangwon Jee #define MIP4_R1_INFO_RESOLUTION_Y 0x12 436ccb1d8fSSangwon Jee #define MIP4_R1_INFO_NODE_NUM_X 0x14 446ccb1d8fSSangwon Jee #define MIP4_R1_INFO_NODE_NUM_Y 0x15 456ccb1d8fSSangwon Jee #define MIP4_R1_INFO_KEY_NUM 0x16 467a3ed686SSangwon Jee #define MIP4_R1_INFO_PRESSURE_NUM 0x17 477a3ed686SSangwon Jee #define MIP4_R1_INFO_LENGTH_X 0x18 487a3ed686SSangwon Jee #define MIP4_R1_INFO_LENGTH_Y 0x1A 497a3ed686SSangwon Jee #define MIP4_R1_INFO_PPM_X 0x1C 507a3ed686SSangwon Jee #define MIP4_R1_INFO_PPM_Y 0x1D 516ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_BOOT 0x20 526ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_CORE 0x22 536ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_APP 0x24 546ccb1d8fSSangwon Jee #define MIP4_R1_INFO_VERSION_PARAM 0x26 556ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_BOOT_START 0x30 566ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_BOOT_END 0x31 576ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_CORE_START 0x32 586ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_CORE_END 0x33 596ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_APP_START 0x34 606ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_APP_END 0x35 616ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_PARAM_START 0x36 626ccb1d8fSSangwon Jee #define MIP4_R1_INFO_SECT_PARAM_END 0x37 636ccb1d8fSSangwon Jee #define MIP4_R1_INFO_BUILD_DATE 0x40 646ccb1d8fSSangwon Jee #define MIP4_R1_INFO_BUILD_TIME 0x44 656ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CHECKSUM_PRECALC 0x48 666ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CHECKSUM_REALTIME 0x4A 676ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PROTOCOL_NAME 0x50 686ccb1d8fSSangwon Jee #define MIP4_R1_INFO_PROTOCOL_VERSION 0x58 696ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_ID 0x70 706ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_NAME 0x71 716ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_VENDOR_ID 0x75 726ccb1d8fSSangwon Jee #define MIP4_R1_INFO_IC_HW_CATEGORY 0x77 736ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CONTACT_THD_SCR 0x78 746ccb1d8fSSangwon Jee #define MIP4_R1_INFO_CONTACT_THD_KEY 0x7A 75e2aad666SSangwon Jee #define MIP4_R1_INFO_PID 0x7C 76e2aad666SSangwon Jee #define MIP4_R1_INFO_VID 0x7E 77e2aad666SSangwon Jee #define MIP4_R1_INFO_SLAVE_ADDR 0x80 786ccb1d8fSSangwon Jee 796ccb1d8fSSangwon Jee #define MIP4_R0_EVENT 0x02 806ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_SUPPORTED_FUNC 0x00 816ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_FORMAT 0x04 826ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_SIZE 0x06 836ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_PACKET_INFO 0x10 846ccb1d8fSSangwon Jee #define MIP4_R1_EVENT_PACKET_DATA 0x11 856ccb1d8fSSangwon Jee 866ccb1d8fSSangwon Jee #define MIP4_R0_CTRL 0x06 876ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_READY_STATUS 0x00 886ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EVENT_READY 0x01 896ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_MODE 0x10 906ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EVENT_TRIGGER_TYPE 0x11 916ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_RECALIBRATE 0x12 926ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_POWER_STATE 0x13 936ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_GESTURE_TYPE 0x14 946ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_DISABLE_ESD_ALERT 0x18 956ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_CHARGER_MODE 0x19 966ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_HIGH_SENS_MODE 0x1A 976ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_WINDOW_MODE 0x1B 986ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PALM_REJECTION 0x1C 996ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_EDGE_CORRECTION 0x1D 1006ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_ENTER_GLOVE_MODE 0x1E 1016ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_I2C_ON_LPM 0x1F 1026ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_GESTURE_DEBUG 0x20 1036ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PALM_EVENT 0x22 1046ccb1d8fSSangwon Jee #define MIP4_R1_CTRL_PROXIMITY_SENSING 0x23 1056ccb1d8fSSangwon Jee 1066ccb1d8fSSangwon Jee /* Value */ 1076ccb1d8fSSangwon Jee #define MIP4_BOOT_MODE_BOOT 0x01 1086ccb1d8fSSangwon Jee #define MIP4_BOOT_MODE_APP 0x02 1096ccb1d8fSSangwon Jee 1106ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_BUSY 0x05 1116ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_ERROR 0x0E 1126ccb1d8fSSangwon Jee #define MIP4_BOOT_STATUS_DONE 0xA0 1136ccb1d8fSSangwon Jee 1146ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_MASS_ERASE 0x15 1156ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_PROGRAM 0x54 1166ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_ERASE 0x8F 1176ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_WRITE 0xA5 1186ccb1d8fSSangwon Jee #define MIP4_BOOT_CMD_READ 0xC2 1196ccb1d8fSSangwon Jee 1206ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_KEY 0 1216ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_SCREEN 1 1226ccb1d8fSSangwon Jee #define MIP4_EVENT_INPUT_TYPE_PROXIMITY 2 1236ccb1d8fSSangwon Jee 1246ccb1d8fSSangwon Jee #define I2C_RETRY_COUNT 3 /* 2~ */ 1256ccb1d8fSSangwon Jee 1266ccb1d8fSSangwon Jee #define MIP4_BUF_SIZE 128 1276ccb1d8fSSangwon Jee #define MIP4_MAX_FINGERS 10 1286ccb1d8fSSangwon Jee #define MIP4_MAX_KEYS 4 1296ccb1d8fSSangwon Jee 1306ccb1d8fSSangwon Jee #define MIP4_TOUCH_MAJOR_MIN 0 1316ccb1d8fSSangwon Jee #define MIP4_TOUCH_MAJOR_MAX 255 1326ccb1d8fSSangwon Jee #define MIP4_TOUCH_MINOR_MIN 0 1336ccb1d8fSSangwon Jee #define MIP4_TOUCH_MINOR_MAX 255 1346ccb1d8fSSangwon Jee #define MIP4_PRESSURE_MIN 0 1356ccb1d8fSSangwon Jee #define MIP4_PRESSURE_MAX 255 1366ccb1d8fSSangwon Jee 1376ccb1d8fSSangwon Jee #define MIP4_FW_NAME "melfas_mip4.fw" 1386ccb1d8fSSangwon Jee #define MIP4_FW_UPDATE_DEBUG 0 /* 0 (default) or 1 */ 1396ccb1d8fSSangwon Jee 1406ccb1d8fSSangwon Jee struct mip4_fw_version { 1416ccb1d8fSSangwon Jee u16 boot; 1426ccb1d8fSSangwon Jee u16 core; 1436ccb1d8fSSangwon Jee u16 app; 1446ccb1d8fSSangwon Jee u16 param; 1456ccb1d8fSSangwon Jee }; 1466ccb1d8fSSangwon Jee 1476ccb1d8fSSangwon Jee struct mip4_ts { 1486ccb1d8fSSangwon Jee struct i2c_client *client; 1496ccb1d8fSSangwon Jee struct input_dev *input; 1506ccb1d8fSSangwon Jee struct gpio_desc *gpio_ce; 1516ccb1d8fSSangwon Jee 1526ccb1d8fSSangwon Jee char phys[32]; 1536ccb1d8fSSangwon Jee char product_name[16]; 154e2aad666SSangwon Jee u16 product_id; 1554e1bff07SSangwon Jee char ic_name[4]; 156c2c4ba82SSangwon Jee char fw_name[32]; 1576ccb1d8fSSangwon Jee 1586ccb1d8fSSangwon Jee unsigned int max_x; 1596ccb1d8fSSangwon Jee unsigned int max_y; 1606ccb1d8fSSangwon Jee u8 node_x; 1616ccb1d8fSSangwon Jee u8 node_y; 1626ccb1d8fSSangwon Jee u8 node_key; 1637a3ed686SSangwon Jee unsigned int ppm_x; 1647a3ed686SSangwon Jee unsigned int ppm_y; 1656ccb1d8fSSangwon Jee 1666ccb1d8fSSangwon Jee struct mip4_fw_version fw_version; 1676ccb1d8fSSangwon Jee 1686ccb1d8fSSangwon Jee unsigned int event_size; 1696ccb1d8fSSangwon Jee unsigned int event_format; 1706ccb1d8fSSangwon Jee 1716ccb1d8fSSangwon Jee unsigned int key_num; 1726ccb1d8fSSangwon Jee unsigned short key_code[MIP4_MAX_KEYS]; 1736ccb1d8fSSangwon Jee 1746ccb1d8fSSangwon Jee bool wake_irq_enabled; 1756ccb1d8fSSangwon Jee 1766ccb1d8fSSangwon Jee u8 buf[MIP4_BUF_SIZE]; 1776ccb1d8fSSangwon Jee }; 1786ccb1d8fSSangwon Jee 1796ccb1d8fSSangwon Jee static int mip4_i2c_xfer(struct mip4_ts *ts, 1806ccb1d8fSSangwon Jee char *write_buf, unsigned int write_len, 1816ccb1d8fSSangwon Jee char *read_buf, unsigned int read_len) 1826ccb1d8fSSangwon Jee { 1836ccb1d8fSSangwon Jee struct i2c_msg msg[] = { 1846ccb1d8fSSangwon Jee { 1856ccb1d8fSSangwon Jee .addr = ts->client->addr, 1866ccb1d8fSSangwon Jee .flags = 0, 1876ccb1d8fSSangwon Jee .buf = write_buf, 1886ccb1d8fSSangwon Jee .len = write_len, 1896ccb1d8fSSangwon Jee }, { 1906ccb1d8fSSangwon Jee .addr = ts->client->addr, 1916ccb1d8fSSangwon Jee .flags = I2C_M_RD, 1926ccb1d8fSSangwon Jee .buf = read_buf, 1936ccb1d8fSSangwon Jee .len = read_len, 1946ccb1d8fSSangwon Jee }, 1956ccb1d8fSSangwon Jee }; 1966ccb1d8fSSangwon Jee int retry = I2C_RETRY_COUNT; 1976ccb1d8fSSangwon Jee int res; 1986ccb1d8fSSangwon Jee int error; 1996ccb1d8fSSangwon Jee 2006ccb1d8fSSangwon Jee do { 2016ccb1d8fSSangwon Jee res = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); 2026ccb1d8fSSangwon Jee if (res == ARRAY_SIZE(msg)) 2036ccb1d8fSSangwon Jee return 0; 2046ccb1d8fSSangwon Jee 2056ccb1d8fSSangwon Jee error = res < 0 ? res : -EIO; 2066ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 2076ccb1d8fSSangwon Jee "%s - i2c_transfer failed: %d (%d)\n", 2086ccb1d8fSSangwon Jee __func__, error, res); 2096ccb1d8fSSangwon Jee } while (--retry); 2106ccb1d8fSSangwon Jee 2116ccb1d8fSSangwon Jee return error; 2126ccb1d8fSSangwon Jee } 2136ccb1d8fSSangwon Jee 2146ccb1d8fSSangwon Jee static void mip4_parse_fw_version(const u8 *buf, struct mip4_fw_version *v) 2156ccb1d8fSSangwon Jee { 2166ccb1d8fSSangwon Jee v->boot = get_unaligned_le16(buf + 0); 2176ccb1d8fSSangwon Jee v->core = get_unaligned_le16(buf + 2); 2186ccb1d8fSSangwon Jee v->app = get_unaligned_le16(buf + 4); 2196ccb1d8fSSangwon Jee v->param = get_unaligned_le16(buf + 6); 2206ccb1d8fSSangwon Jee } 2216ccb1d8fSSangwon Jee 2226ccb1d8fSSangwon Jee /* 2236ccb1d8fSSangwon Jee * Read chip firmware version 2246ccb1d8fSSangwon Jee */ 2256ccb1d8fSSangwon Jee static int mip4_get_fw_version(struct mip4_ts *ts) 2266ccb1d8fSSangwon Jee { 2276ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_INFO, MIP4_R1_INFO_VERSION_BOOT }; 2286ccb1d8fSSangwon Jee u8 buf[sizeof(ts->fw_version)]; 2296ccb1d8fSSangwon Jee int error; 2306ccb1d8fSSangwon Jee 2316ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, sizeof(buf)); 2326ccb1d8fSSangwon Jee if (error) { 2336ccb1d8fSSangwon Jee memset(&ts->fw_version, 0xff, sizeof(ts->fw_version)); 2346ccb1d8fSSangwon Jee return error; 2356ccb1d8fSSangwon Jee } 2366ccb1d8fSSangwon Jee 2376ccb1d8fSSangwon Jee mip4_parse_fw_version(buf, &ts->fw_version); 2386ccb1d8fSSangwon Jee 2396ccb1d8fSSangwon Jee return 0; 2406ccb1d8fSSangwon Jee } 2416ccb1d8fSSangwon Jee 2426ccb1d8fSSangwon Jee /* 2436ccb1d8fSSangwon Jee * Fetch device characteristics 2446ccb1d8fSSangwon Jee */ 2456ccb1d8fSSangwon Jee static int mip4_query_device(struct mip4_ts *ts) 2466ccb1d8fSSangwon Jee { 2474896fb13SDmitry Torokhov union i2c_smbus_data dummy; 2486ccb1d8fSSangwon Jee int error; 2496ccb1d8fSSangwon Jee u8 cmd[2]; 2507a3ed686SSangwon Jee u8 buf[14]; 2516ccb1d8fSSangwon Jee 2524896fb13SDmitry Torokhov /* 2534896fb13SDmitry Torokhov * Make sure there is something at this address as we do not 2544896fb13SDmitry Torokhov * consider subsequent failures as fatal. 2554896fb13SDmitry Torokhov */ 2564896fb13SDmitry Torokhov if (i2c_smbus_xfer(ts->client->adapter, ts->client->addr, 2574896fb13SDmitry Torokhov 0, I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0) { 2584896fb13SDmitry Torokhov dev_err(&ts->client->dev, "nothing at this address\n"); 2594896fb13SDmitry Torokhov return -ENXIO; 2604896fb13SDmitry Torokhov } 2614896fb13SDmitry Torokhov 2626ccb1d8fSSangwon Jee /* Product name */ 2636ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_INFO; 2646ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_INFO_PRODUCT_NAME; 2656ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), 2666ccb1d8fSSangwon Jee ts->product_name, sizeof(ts->product_name)); 2676ccb1d8fSSangwon Jee if (error) 2686ccb1d8fSSangwon Jee dev_warn(&ts->client->dev, 2696ccb1d8fSSangwon Jee "Failed to retrieve product name: %d\n", error); 2706ccb1d8fSSangwon Jee else 2716ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "product name: %.*s\n", 2726ccb1d8fSSangwon Jee (int)sizeof(ts->product_name), ts->product_name); 2736ccb1d8fSSangwon Jee 274e2aad666SSangwon Jee /* Product ID */ 275e2aad666SSangwon Jee cmd[0] = MIP4_R0_INFO; 276e2aad666SSangwon Jee cmd[1] = MIP4_R1_INFO_PID; 277e2aad666SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 2); 278e2aad666SSangwon Jee if (error) { 279e2aad666SSangwon Jee dev_warn(&ts->client->dev, 280e2aad666SSangwon Jee "Failed to retrieve product id: %d\n", error); 281e2aad666SSangwon Jee } else { 282e2aad666SSangwon Jee ts->product_id = get_unaligned_le16(&buf[0]); 283e2aad666SSangwon Jee dev_dbg(&ts->client->dev, "product id: %04X\n", ts->product_id); 284e2aad666SSangwon Jee } 285e2aad666SSangwon Jee 286c2c4ba82SSangwon Jee /* Firmware name */ 287c2c4ba82SSangwon Jee snprintf(ts->fw_name, sizeof(ts->fw_name), 288c2c4ba82SSangwon Jee "melfas_mip4_%04X.fw", ts->product_id); 289c2c4ba82SSangwon Jee dev_dbg(&ts->client->dev, "firmware name: %s\n", ts->fw_name); 290c2c4ba82SSangwon Jee 2914e1bff07SSangwon Jee /* IC name */ 2924e1bff07SSangwon Jee cmd[0] = MIP4_R0_INFO; 2934e1bff07SSangwon Jee cmd[1] = MIP4_R1_INFO_IC_NAME; 2944e1bff07SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), 2954e1bff07SSangwon Jee ts->ic_name, sizeof(ts->ic_name)); 2964e1bff07SSangwon Jee if (error) 2974e1bff07SSangwon Jee dev_warn(&ts->client->dev, 2984e1bff07SSangwon Jee "Failed to retrieve IC name: %d\n", error); 2994e1bff07SSangwon Jee else 3004e1bff07SSangwon Jee dev_dbg(&ts->client->dev, "IC name: %.*s\n", 3014e1bff07SSangwon Jee (int)sizeof(ts->ic_name), ts->ic_name); 3024e1bff07SSangwon Jee 3036ccb1d8fSSangwon Jee /* Firmware version */ 3046ccb1d8fSSangwon Jee error = mip4_get_fw_version(ts); 3056ccb1d8fSSangwon Jee if (error) 3066ccb1d8fSSangwon Jee dev_warn(&ts->client->dev, 3076ccb1d8fSSangwon Jee "Failed to retrieve FW version: %d\n", error); 3086ccb1d8fSSangwon Jee else 3096ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W Version: %04X %04X %04X %04X\n", 3106ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core, 3116ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param); 3126ccb1d8fSSangwon Jee 3136ccb1d8fSSangwon Jee /* Resolution */ 3146ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_INFO; 3156ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_INFO_RESOLUTION_X; 3167a3ed686SSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 14); 3176ccb1d8fSSangwon Jee if (error) { 3186ccb1d8fSSangwon Jee dev_warn(&ts->client->dev, 3196ccb1d8fSSangwon Jee "Failed to retrieve touchscreen parameters: %d\n", 3206ccb1d8fSSangwon Jee error); 3216ccb1d8fSSangwon Jee } else { 3226ccb1d8fSSangwon Jee ts->max_x = get_unaligned_le16(&buf[0]); 3236ccb1d8fSSangwon Jee ts->max_y = get_unaligned_le16(&buf[2]); 3246ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "max_x: %d, max_y: %d\n", 3256ccb1d8fSSangwon Jee ts->max_x, ts->max_y); 3266ccb1d8fSSangwon Jee 3276ccb1d8fSSangwon Jee ts->node_x = buf[4]; 3286ccb1d8fSSangwon Jee ts->node_y = buf[5]; 3296ccb1d8fSSangwon Jee ts->node_key = buf[6]; 3306ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 3316ccb1d8fSSangwon Jee "node_x: %d, node_y: %d, node_key: %d\n", 3326ccb1d8fSSangwon Jee ts->node_x, ts->node_y, ts->node_key); 3336ccb1d8fSSangwon Jee 3347a3ed686SSangwon Jee ts->ppm_x = buf[12]; 3357a3ed686SSangwon Jee ts->ppm_y = buf[13]; 3367a3ed686SSangwon Jee dev_dbg(&ts->client->dev, "ppm_x: %d, ppm_y: %d\n", 3377a3ed686SSangwon Jee ts->ppm_x, ts->ppm_y); 3387a3ed686SSangwon Jee 3396ccb1d8fSSangwon Jee /* Key ts */ 3406ccb1d8fSSangwon Jee if (ts->node_key > 0) 3416ccb1d8fSSangwon Jee ts->key_num = ts->node_key; 3426ccb1d8fSSangwon Jee } 3436ccb1d8fSSangwon Jee 3446ccb1d8fSSangwon Jee /* Protocol */ 3456ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT; 3466ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_SUPPORTED_FUNC; 3476ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), buf, 7); 3486ccb1d8fSSangwon Jee if (error) { 3496ccb1d8fSSangwon Jee dev_warn(&ts->client->dev, 3506ccb1d8fSSangwon Jee "Failed to retrieve device type: %d\n", error); 3516ccb1d8fSSangwon Jee ts->event_format = 0xff; 3526ccb1d8fSSangwon Jee } else { 3536ccb1d8fSSangwon Jee ts->event_format = get_unaligned_le16(&buf[4]); 3546ccb1d8fSSangwon Jee ts->event_size = buf[6]; 3556ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "event_format: %d, event_size: %d\n", 3566ccb1d8fSSangwon Jee ts->event_format, ts->event_size); 3576ccb1d8fSSangwon Jee 3586ccb1d8fSSangwon Jee if (ts->event_format == 2 || ts->event_format > 3) 3596ccb1d8fSSangwon Jee dev_warn(&ts->client->dev, 3606ccb1d8fSSangwon Jee "Unknown event format %d\n", ts->event_format); 3616ccb1d8fSSangwon Jee } 3626ccb1d8fSSangwon Jee 3636ccb1d8fSSangwon Jee return 0; 3646ccb1d8fSSangwon Jee } 3656ccb1d8fSSangwon Jee 3666ccb1d8fSSangwon Jee static int mip4_power_on(struct mip4_ts *ts) 3676ccb1d8fSSangwon Jee { 3686ccb1d8fSSangwon Jee if (ts->gpio_ce) { 3696ccb1d8fSSangwon Jee gpiod_set_value_cansleep(ts->gpio_ce, 1); 3706ccb1d8fSSangwon Jee 3716ccb1d8fSSangwon Jee /* Booting delay : 200~300ms */ 3726ccb1d8fSSangwon Jee usleep_range(200 * 1000, 300 * 1000); 3736ccb1d8fSSangwon Jee } 3746ccb1d8fSSangwon Jee 3756ccb1d8fSSangwon Jee return 0; 3766ccb1d8fSSangwon Jee } 3776ccb1d8fSSangwon Jee 3786ccb1d8fSSangwon Jee static void mip4_power_off(struct mip4_ts *ts) 3796ccb1d8fSSangwon Jee { 3806ccb1d8fSSangwon Jee if (ts->gpio_ce) 3816ccb1d8fSSangwon Jee gpiod_set_value_cansleep(ts->gpio_ce, 0); 3826ccb1d8fSSangwon Jee } 3836ccb1d8fSSangwon Jee 3846ccb1d8fSSangwon Jee /* 3856ccb1d8fSSangwon Jee * Clear touch input event status 3866ccb1d8fSSangwon Jee */ 3876ccb1d8fSSangwon Jee static void mip4_clear_input(struct mip4_ts *ts) 3886ccb1d8fSSangwon Jee { 3896ccb1d8fSSangwon Jee int i; 3906ccb1d8fSSangwon Jee 3916ccb1d8fSSangwon Jee /* Screen */ 3926ccb1d8fSSangwon Jee for (i = 0; i < MIP4_MAX_FINGERS; i++) { 3936ccb1d8fSSangwon Jee input_mt_slot(ts->input, i); 3945fc70e35SJiada Wang input_mt_report_slot_inactive(ts->input); 3956ccb1d8fSSangwon Jee } 3966ccb1d8fSSangwon Jee 3976ccb1d8fSSangwon Jee /* Keys */ 3986ccb1d8fSSangwon Jee for (i = 0; i < ts->key_num; i++) 3996ccb1d8fSSangwon Jee input_report_key(ts->input, ts->key_code[i], 0); 4006ccb1d8fSSangwon Jee 4016ccb1d8fSSangwon Jee input_sync(ts->input); 4026ccb1d8fSSangwon Jee } 4036ccb1d8fSSangwon Jee 4046ccb1d8fSSangwon Jee static int mip4_enable(struct mip4_ts *ts) 4056ccb1d8fSSangwon Jee { 4066ccb1d8fSSangwon Jee int error; 4076ccb1d8fSSangwon Jee 4086ccb1d8fSSangwon Jee error = mip4_power_on(ts); 4096ccb1d8fSSangwon Jee if (error) 4106ccb1d8fSSangwon Jee return error; 4116ccb1d8fSSangwon Jee 4126ccb1d8fSSangwon Jee enable_irq(ts->client->irq); 4136ccb1d8fSSangwon Jee 4146ccb1d8fSSangwon Jee return 0; 4156ccb1d8fSSangwon Jee } 4166ccb1d8fSSangwon Jee 4176ccb1d8fSSangwon Jee static void mip4_disable(struct mip4_ts *ts) 4186ccb1d8fSSangwon Jee { 4196ccb1d8fSSangwon Jee disable_irq(ts->client->irq); 4206ccb1d8fSSangwon Jee 4216ccb1d8fSSangwon Jee mip4_power_off(ts); 4226ccb1d8fSSangwon Jee 4236ccb1d8fSSangwon Jee mip4_clear_input(ts); 4246ccb1d8fSSangwon Jee } 4256ccb1d8fSSangwon Jee 4266ccb1d8fSSangwon Jee /***************************************************************** 4276ccb1d8fSSangwon Jee * Input handling 4286ccb1d8fSSangwon Jee *****************************************************************/ 4296ccb1d8fSSangwon Jee 4306ccb1d8fSSangwon Jee static void mip4_report_keys(struct mip4_ts *ts, u8 *packet) 4316ccb1d8fSSangwon Jee { 4326ccb1d8fSSangwon Jee u8 key; 4336ccb1d8fSSangwon Jee bool down; 4346ccb1d8fSSangwon Jee 4356ccb1d8fSSangwon Jee switch (ts->event_format) { 4366ccb1d8fSSangwon Jee case 0: 4376ccb1d8fSSangwon Jee case 1: 4386ccb1d8fSSangwon Jee key = packet[0] & 0x0F; 4396ccb1d8fSSangwon Jee down = packet[0] & 0x80; 4406ccb1d8fSSangwon Jee break; 4416ccb1d8fSSangwon Jee 4426ccb1d8fSSangwon Jee case 3: 4436ccb1d8fSSangwon Jee default: 4446ccb1d8fSSangwon Jee key = packet[0] & 0x0F; 4456ccb1d8fSSangwon Jee down = packet[1] & 0x01; 4466ccb1d8fSSangwon Jee break; 4476ccb1d8fSSangwon Jee } 4486ccb1d8fSSangwon Jee 4496ccb1d8fSSangwon Jee /* Report key event */ 4506ccb1d8fSSangwon Jee if (key >= 1 && key <= ts->key_num) { 4516ccb1d8fSSangwon Jee unsigned short keycode = ts->key_code[key - 1]; 4526ccb1d8fSSangwon Jee 4536ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 4546ccb1d8fSSangwon Jee "Key - ID: %d, keycode: %d, state: %d\n", 4556ccb1d8fSSangwon Jee key, keycode, down); 4566ccb1d8fSSangwon Jee 4576ccb1d8fSSangwon Jee input_event(ts->input, EV_MSC, MSC_SCAN, keycode); 4586ccb1d8fSSangwon Jee input_report_key(ts->input, keycode, down); 4596ccb1d8fSSangwon Jee 4606ccb1d8fSSangwon Jee } else { 4616ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Unknown key: %d\n", key); 4626ccb1d8fSSangwon Jee } 4636ccb1d8fSSangwon Jee } 4646ccb1d8fSSangwon Jee 4656ccb1d8fSSangwon Jee static void mip4_report_touch(struct mip4_ts *ts, u8 *packet) 4666ccb1d8fSSangwon Jee { 4676ccb1d8fSSangwon Jee int id; 4687c0c3840SLee Jones bool __always_unused hover; 4697c0c3840SLee Jones bool __always_unused palm; 4706ccb1d8fSSangwon Jee bool state; 4716ccb1d8fSSangwon Jee u16 x, y; 4727c0c3840SLee Jones u8 __always_unused pressure_stage = 0; 4736ccb1d8fSSangwon Jee u8 pressure; 4747c0c3840SLee Jones u8 __always_unused size; 4756ccb1d8fSSangwon Jee u8 touch_major; 4766ccb1d8fSSangwon Jee u8 touch_minor; 4776ccb1d8fSSangwon Jee 4786ccb1d8fSSangwon Jee switch (ts->event_format) { 4796ccb1d8fSSangwon Jee case 0: 4806ccb1d8fSSangwon Jee case 1: 4816ccb1d8fSSangwon Jee /* Touch only */ 4826ccb1d8fSSangwon Jee state = packet[0] & BIT(7); 4836ccb1d8fSSangwon Jee hover = packet[0] & BIT(5); 4846ccb1d8fSSangwon Jee palm = packet[0] & BIT(4); 4856ccb1d8fSSangwon Jee id = (packet[0] & 0x0F) - 1; 4866ccb1d8fSSangwon Jee x = ((packet[1] & 0x0F) << 8) | packet[2]; 4876ccb1d8fSSangwon Jee y = (((packet[1] >> 4) & 0x0F) << 8) | 4886ccb1d8fSSangwon Jee packet[3]; 4896ccb1d8fSSangwon Jee pressure = packet[4]; 4906ccb1d8fSSangwon Jee size = packet[5]; 4916ccb1d8fSSangwon Jee if (ts->event_format == 0) { 4926ccb1d8fSSangwon Jee touch_major = packet[5]; 4936ccb1d8fSSangwon Jee touch_minor = packet[5]; 4946ccb1d8fSSangwon Jee } else { 4956ccb1d8fSSangwon Jee touch_major = packet[6]; 4966ccb1d8fSSangwon Jee touch_minor = packet[7]; 4976ccb1d8fSSangwon Jee } 4986ccb1d8fSSangwon Jee break; 4996ccb1d8fSSangwon Jee 5006ccb1d8fSSangwon Jee case 3: 5016ccb1d8fSSangwon Jee default: 5026ccb1d8fSSangwon Jee /* Touch + Force(Pressure) */ 5036ccb1d8fSSangwon Jee id = (packet[0] & 0x0F) - 1; 5046ccb1d8fSSangwon Jee hover = packet[1] & BIT(2); 5056ccb1d8fSSangwon Jee palm = packet[1] & BIT(1); 5066ccb1d8fSSangwon Jee state = packet[1] & BIT(0); 5076ccb1d8fSSangwon Jee x = ((packet[2] & 0x0F) << 8) | packet[3]; 5086ccb1d8fSSangwon Jee y = (((packet[2] >> 4) & 0x0F) << 8) | 5096ccb1d8fSSangwon Jee packet[4]; 5106ccb1d8fSSangwon Jee size = packet[6]; 5116ccb1d8fSSangwon Jee pressure_stage = (packet[7] & 0xF0) >> 4; 5126ccb1d8fSSangwon Jee pressure = ((packet[7] & 0x0F) << 8) | 5136ccb1d8fSSangwon Jee packet[8]; 5146ccb1d8fSSangwon Jee touch_major = packet[9]; 5156ccb1d8fSSangwon Jee touch_minor = packet[10]; 5166ccb1d8fSSangwon Jee break; 5176ccb1d8fSSangwon Jee } 5186ccb1d8fSSangwon Jee 5196ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 5206ccb1d8fSSangwon Jee "Screen - Slot: %d State: %d X: %04d Y: %04d Z: %d\n", 5216ccb1d8fSSangwon Jee id, state, x, y, pressure); 5226ccb1d8fSSangwon Jee 5236ccb1d8fSSangwon Jee if (unlikely(id < 0 || id >= MIP4_MAX_FINGERS)) { 5246ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Screen - invalid slot ID: %d\n", id); 5256ccb1d8fSSangwon Jee } else if (state) { 5266ccb1d8fSSangwon Jee /* Press or Move event */ 5276ccb1d8fSSangwon Jee input_mt_slot(ts->input, id); 5286ccb1d8fSSangwon Jee input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, true); 5296ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_POSITION_X, x); 5306ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_POSITION_Y, y); 5316ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_PRESSURE, pressure); 5326ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, touch_major); 5336ccb1d8fSSangwon Jee input_report_abs(ts->input, ABS_MT_TOUCH_MINOR, touch_minor); 5346ccb1d8fSSangwon Jee } else { 5356ccb1d8fSSangwon Jee /* Release event */ 5366ccb1d8fSSangwon Jee input_mt_slot(ts->input, id); 5375fc70e35SJiada Wang input_mt_report_slot_inactive(ts->input); 5386ccb1d8fSSangwon Jee } 5396ccb1d8fSSangwon Jee 5406ccb1d8fSSangwon Jee input_mt_sync_frame(ts->input); 5416ccb1d8fSSangwon Jee } 5426ccb1d8fSSangwon Jee 5436ccb1d8fSSangwon Jee static int mip4_handle_packet(struct mip4_ts *ts, u8 *packet) 5446ccb1d8fSSangwon Jee { 5456ccb1d8fSSangwon Jee u8 type; 5466ccb1d8fSSangwon Jee 5476ccb1d8fSSangwon Jee switch (ts->event_format) { 5486ccb1d8fSSangwon Jee case 0: 5496ccb1d8fSSangwon Jee case 1: 5506ccb1d8fSSangwon Jee type = (packet[0] & 0x40) >> 6; 5516ccb1d8fSSangwon Jee break; 5526ccb1d8fSSangwon Jee 5536ccb1d8fSSangwon Jee case 3: 5546ccb1d8fSSangwon Jee type = (packet[0] & 0xF0) >> 4; 5556ccb1d8fSSangwon Jee break; 5566ccb1d8fSSangwon Jee 5576ccb1d8fSSangwon Jee default: 5586ccb1d8fSSangwon Jee /* Should not happen unless we have corrupted firmware */ 5596ccb1d8fSSangwon Jee return -EINVAL; 5606ccb1d8fSSangwon Jee } 5616ccb1d8fSSangwon Jee 5626ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Type: %d\n", type); 5636ccb1d8fSSangwon Jee 5646ccb1d8fSSangwon Jee /* Report input event */ 5656ccb1d8fSSangwon Jee switch (type) { 5666ccb1d8fSSangwon Jee case MIP4_EVENT_INPUT_TYPE_KEY: 5676ccb1d8fSSangwon Jee mip4_report_keys(ts, packet); 5686ccb1d8fSSangwon Jee break; 5696ccb1d8fSSangwon Jee 5706ccb1d8fSSangwon Jee case MIP4_EVENT_INPUT_TYPE_SCREEN: 5716ccb1d8fSSangwon Jee mip4_report_touch(ts, packet); 5726ccb1d8fSSangwon Jee break; 5736ccb1d8fSSangwon Jee 5746ccb1d8fSSangwon Jee default: 5756ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Unknown event type: %d\n", type); 5766ccb1d8fSSangwon Jee break; 5776ccb1d8fSSangwon Jee } 5786ccb1d8fSSangwon Jee 5796ccb1d8fSSangwon Jee return 0; 5806ccb1d8fSSangwon Jee } 5816ccb1d8fSSangwon Jee 5826ccb1d8fSSangwon Jee static irqreturn_t mip4_interrupt(int irq, void *dev_id) 5836ccb1d8fSSangwon Jee { 5846ccb1d8fSSangwon Jee struct mip4_ts *ts = dev_id; 5856ccb1d8fSSangwon Jee struct i2c_client *client = ts->client; 5866ccb1d8fSSangwon Jee unsigned int i; 5876ccb1d8fSSangwon Jee int error; 5886ccb1d8fSSangwon Jee u8 cmd[2]; 5896ccb1d8fSSangwon Jee u8 size; 5906ccb1d8fSSangwon Jee bool alert; 5916ccb1d8fSSangwon Jee 5926ccb1d8fSSangwon Jee /* Read packet info */ 5936ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT; 5946ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_PACKET_INFO; 5956ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, 1); 5966ccb1d8fSSangwon Jee if (error) { 5976ccb1d8fSSangwon Jee dev_err(&client->dev, 5986ccb1d8fSSangwon Jee "Failed to read packet info: %d\n", error); 5996ccb1d8fSSangwon Jee goto out; 6006ccb1d8fSSangwon Jee } 6016ccb1d8fSSangwon Jee 6026ccb1d8fSSangwon Jee size = ts->buf[0] & 0x7F; 6036ccb1d8fSSangwon Jee alert = ts->buf[0] & BIT(7); 6046ccb1d8fSSangwon Jee dev_dbg(&client->dev, "packet size: %d, alert: %d\n", size, alert); 6056ccb1d8fSSangwon Jee 6066ccb1d8fSSangwon Jee /* Check size */ 6076ccb1d8fSSangwon Jee if (!size) { 6086ccb1d8fSSangwon Jee dev_err(&client->dev, "Empty packet\n"); 6096ccb1d8fSSangwon Jee goto out; 6106ccb1d8fSSangwon Jee } 6116ccb1d8fSSangwon Jee 6126ccb1d8fSSangwon Jee /* Read packet data */ 6136ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_EVENT; 6146ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_EVENT_PACKET_DATA; 6156ccb1d8fSSangwon Jee error = mip4_i2c_xfer(ts, cmd, sizeof(cmd), ts->buf, size); 6166ccb1d8fSSangwon Jee if (error) { 6176ccb1d8fSSangwon Jee dev_err(&client->dev, 6186ccb1d8fSSangwon Jee "Failed to read packet data: %d\n", error); 6196ccb1d8fSSangwon Jee goto out; 6206ccb1d8fSSangwon Jee } 6216ccb1d8fSSangwon Jee 6226ccb1d8fSSangwon Jee if (alert) { 6236ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Alert: %d\n", ts->buf[0]); 6246ccb1d8fSSangwon Jee } else { 6256ccb1d8fSSangwon Jee for (i = 0; i < size; i += ts->event_size) { 6266ccb1d8fSSangwon Jee error = mip4_handle_packet(ts, &ts->buf[i]); 6276ccb1d8fSSangwon Jee if (error) 6286ccb1d8fSSangwon Jee break; 6296ccb1d8fSSangwon Jee } 6306ccb1d8fSSangwon Jee 6316ccb1d8fSSangwon Jee input_sync(ts->input); 6326ccb1d8fSSangwon Jee } 6336ccb1d8fSSangwon Jee 6346ccb1d8fSSangwon Jee out: 6356ccb1d8fSSangwon Jee return IRQ_HANDLED; 6366ccb1d8fSSangwon Jee } 6376ccb1d8fSSangwon Jee 6386ccb1d8fSSangwon Jee static int mip4_input_open(struct input_dev *dev) 6396ccb1d8fSSangwon Jee { 6406ccb1d8fSSangwon Jee struct mip4_ts *ts = input_get_drvdata(dev); 6416ccb1d8fSSangwon Jee 6426ccb1d8fSSangwon Jee return mip4_enable(ts); 6436ccb1d8fSSangwon Jee } 6446ccb1d8fSSangwon Jee 6456ccb1d8fSSangwon Jee static void mip4_input_close(struct input_dev *dev) 6466ccb1d8fSSangwon Jee { 6476ccb1d8fSSangwon Jee struct mip4_ts *ts = input_get_drvdata(dev); 6486ccb1d8fSSangwon Jee 6496ccb1d8fSSangwon Jee mip4_disable(ts); 6506ccb1d8fSSangwon Jee } 6516ccb1d8fSSangwon Jee 6526ccb1d8fSSangwon Jee /***************************************************************** 6536ccb1d8fSSangwon Jee * Firmware update 6546ccb1d8fSSangwon Jee *****************************************************************/ 6556ccb1d8fSSangwon Jee 6566ccb1d8fSSangwon Jee /* Firmware Info */ 6576ccb1d8fSSangwon Jee #define MIP4_BL_PAGE_SIZE 512 /* 512 */ 6586ccb1d8fSSangwon Jee #define MIP4_BL_PACKET_SIZE 512 /* 512, 256, 128, 64, ... */ 6596ccb1d8fSSangwon Jee 6606ccb1d8fSSangwon Jee /* 6616ccb1d8fSSangwon Jee * Firmware binary tail info 6626ccb1d8fSSangwon Jee */ 6636ccb1d8fSSangwon Jee 6646ccb1d8fSSangwon Jee struct mip4_bin_tail { 6656ccb1d8fSSangwon Jee u8 tail_mark[4]; 6666ccb1d8fSSangwon Jee u8 chip_name[4]; 6676ccb1d8fSSangwon Jee 6686ccb1d8fSSangwon Jee __le32 bin_start_addr; 6696ccb1d8fSSangwon Jee __le32 bin_length; 6706ccb1d8fSSangwon Jee 6716ccb1d8fSSangwon Jee __le16 ver_boot; 6726ccb1d8fSSangwon Jee __le16 ver_core; 6736ccb1d8fSSangwon Jee __le16 ver_app; 6746ccb1d8fSSangwon Jee __le16 ver_param; 6756ccb1d8fSSangwon Jee 6766ccb1d8fSSangwon Jee u8 boot_start; 6776ccb1d8fSSangwon Jee u8 boot_end; 6786ccb1d8fSSangwon Jee u8 core_start; 6796ccb1d8fSSangwon Jee u8 core_end; 6806ccb1d8fSSangwon Jee u8 app_start; 6816ccb1d8fSSangwon Jee u8 app_end; 6826ccb1d8fSSangwon Jee u8 param_start; 6836ccb1d8fSSangwon Jee u8 param_end; 6846ccb1d8fSSangwon Jee 6856ccb1d8fSSangwon Jee u8 checksum_type; 6866ccb1d8fSSangwon Jee u8 hw_category; 6876ccb1d8fSSangwon Jee 6886ccb1d8fSSangwon Jee __le16 param_id; 6896ccb1d8fSSangwon Jee __le32 param_length; 6906ccb1d8fSSangwon Jee __le32 build_date; 6916ccb1d8fSSangwon Jee __le32 build_time; 6926ccb1d8fSSangwon Jee 6936ccb1d8fSSangwon Jee __le32 reserved1; 6946ccb1d8fSSangwon Jee __le32 reserved2; 6956ccb1d8fSSangwon Jee __le16 reserved3; 6966ccb1d8fSSangwon Jee __le16 tail_size; 6976ccb1d8fSSangwon Jee __le32 crc; 6986ccb1d8fSSangwon Jee } __packed; 6996ccb1d8fSSangwon Jee 7006ccb1d8fSSangwon Jee #define MIP4_BIN_TAIL_MARK "MBT\001" 7016ccb1d8fSSangwon Jee #define MIP4_BIN_TAIL_SIZE (sizeof(struct mip4_bin_tail)) 7026ccb1d8fSSangwon Jee 7036ccb1d8fSSangwon Jee /* 7046ccb1d8fSSangwon Jee * Bootloader - Read status 7056ccb1d8fSSangwon Jee */ 7066ccb1d8fSSangwon Jee static int mip4_bl_read_status(struct mip4_ts *ts) 7076ccb1d8fSSangwon Jee { 7086ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_STATUS }; 7096ccb1d8fSSangwon Jee u8 result; 7106ccb1d8fSSangwon Jee struct i2c_msg msg[] = { 7116ccb1d8fSSangwon Jee { 7126ccb1d8fSSangwon Jee .addr = ts->client->addr, 7136ccb1d8fSSangwon Jee .flags = 0, 7146ccb1d8fSSangwon Jee .buf = cmd, 7156ccb1d8fSSangwon Jee .len = sizeof(cmd), 7166ccb1d8fSSangwon Jee }, { 7176ccb1d8fSSangwon Jee .addr = ts->client->addr, 7186ccb1d8fSSangwon Jee .flags = I2C_M_RD, 7196ccb1d8fSSangwon Jee .buf = &result, 7206ccb1d8fSSangwon Jee .len = sizeof(result), 7216ccb1d8fSSangwon Jee }, 7226ccb1d8fSSangwon Jee }; 7236ccb1d8fSSangwon Jee int ret; 7246ccb1d8fSSangwon Jee int error; 7256ccb1d8fSSangwon Jee int retry = 1000; 7266ccb1d8fSSangwon Jee 7276ccb1d8fSSangwon Jee do { 7286ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); 7296ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) { 7306ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 7316ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 7326ccb1d8fSSangwon Jee "Failed to read bootloader status: %d\n", 7336ccb1d8fSSangwon Jee error); 7346ccb1d8fSSangwon Jee return error; 7356ccb1d8fSSangwon Jee } 7366ccb1d8fSSangwon Jee 7376ccb1d8fSSangwon Jee switch (result) { 7386ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_DONE: 7396ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "%s - done\n", __func__); 7406ccb1d8fSSangwon Jee return 0; 7416ccb1d8fSSangwon Jee 7426ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_ERROR: 7436ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Bootloader failure\n"); 7446ccb1d8fSSangwon Jee return -EIO; 7456ccb1d8fSSangwon Jee 7466ccb1d8fSSangwon Jee case MIP4_BOOT_STATUS_BUSY: 7476ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "%s - Busy\n", __func__); 7486ccb1d8fSSangwon Jee error = -EBUSY; 7496ccb1d8fSSangwon Jee break; 7506ccb1d8fSSangwon Jee 7516ccb1d8fSSangwon Jee default: 7526ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 7536ccb1d8fSSangwon Jee "Unexpected bootloader status: %#02x\n", 7546ccb1d8fSSangwon Jee result); 7556ccb1d8fSSangwon Jee error = -EINVAL; 7566ccb1d8fSSangwon Jee break; 7576ccb1d8fSSangwon Jee } 7586ccb1d8fSSangwon Jee 7596ccb1d8fSSangwon Jee usleep_range(1000, 2000); 7606ccb1d8fSSangwon Jee } while (--retry); 7616ccb1d8fSSangwon Jee 7626ccb1d8fSSangwon Jee return error; 7636ccb1d8fSSangwon Jee } 7646ccb1d8fSSangwon Jee 7656ccb1d8fSSangwon Jee /* 7666ccb1d8fSSangwon Jee * Bootloader - Change mode 7676ccb1d8fSSangwon Jee */ 7686ccb1d8fSSangwon Jee static int mip4_bl_change_mode(struct mip4_ts *ts, u8 mode) 7696ccb1d8fSSangwon Jee { 7706ccb1d8fSSangwon Jee u8 mode_chg_cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_MODE, mode }; 7716ccb1d8fSSangwon Jee u8 mode_read_cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_MODE }; 7726ccb1d8fSSangwon Jee u8 result; 7736ccb1d8fSSangwon Jee struct i2c_msg msg[] = { 7746ccb1d8fSSangwon Jee { 7756ccb1d8fSSangwon Jee .addr = ts->client->addr, 7766ccb1d8fSSangwon Jee .flags = 0, 7776ccb1d8fSSangwon Jee .buf = mode_read_cmd, 7786ccb1d8fSSangwon Jee .len = sizeof(mode_read_cmd), 7796ccb1d8fSSangwon Jee }, { 7806ccb1d8fSSangwon Jee .addr = ts->client->addr, 7816ccb1d8fSSangwon Jee .flags = I2C_M_RD, 7826ccb1d8fSSangwon Jee .buf = &result, 7836ccb1d8fSSangwon Jee .len = sizeof(result), 7846ccb1d8fSSangwon Jee }, 7856ccb1d8fSSangwon Jee }; 7866ccb1d8fSSangwon Jee int retry = 10; 7876ccb1d8fSSangwon Jee int ret; 7886ccb1d8fSSangwon Jee int error; 7896ccb1d8fSSangwon Jee 7906ccb1d8fSSangwon Jee do { 7916ccb1d8fSSangwon Jee /* Send mode change command */ 7926ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, 7936ccb1d8fSSangwon Jee mode_chg_cmd, sizeof(mode_chg_cmd)); 7946ccb1d8fSSangwon Jee if (ret != sizeof(mode_chg_cmd)) { 7956ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 7966ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 7976ccb1d8fSSangwon Jee "Failed to send %d mode change: %d (%d)\n", 7986ccb1d8fSSangwon Jee mode, error, ret); 7996ccb1d8fSSangwon Jee return error; 8006ccb1d8fSSangwon Jee } 8016ccb1d8fSSangwon Jee 8026ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 8036ccb1d8fSSangwon Jee "Sent mode change request (mode: %d)\n", mode); 8046ccb1d8fSSangwon Jee 8056ccb1d8fSSangwon Jee /* Wait */ 8066ccb1d8fSSangwon Jee msleep(1000); 8076ccb1d8fSSangwon Jee 8086ccb1d8fSSangwon Jee /* Verify target mode */ 8096ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); 8106ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) { 8116ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 8126ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 8136ccb1d8fSSangwon Jee "Failed to read device mode: %d\n", error); 8146ccb1d8fSSangwon Jee return error; 8156ccb1d8fSSangwon Jee } 8166ccb1d8fSSangwon Jee 8176ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 8186ccb1d8fSSangwon Jee "Current device mode: %d, want: %d\n", result, mode); 8196ccb1d8fSSangwon Jee 8206ccb1d8fSSangwon Jee if (result == mode) 8216ccb1d8fSSangwon Jee return 0; 8226ccb1d8fSSangwon Jee 8236ccb1d8fSSangwon Jee } while (--retry); 8246ccb1d8fSSangwon Jee 8256ccb1d8fSSangwon Jee return -EIO; 8266ccb1d8fSSangwon Jee } 8276ccb1d8fSSangwon Jee 8286ccb1d8fSSangwon Jee /* 8296ccb1d8fSSangwon Jee * Bootloader - Start bootloader mode 8306ccb1d8fSSangwon Jee */ 8316ccb1d8fSSangwon Jee static int mip4_bl_enter(struct mip4_ts *ts) 8326ccb1d8fSSangwon Jee { 8336ccb1d8fSSangwon Jee return mip4_bl_change_mode(ts, MIP4_BOOT_MODE_BOOT); 8346ccb1d8fSSangwon Jee } 8356ccb1d8fSSangwon Jee 8366ccb1d8fSSangwon Jee /* 8376ccb1d8fSSangwon Jee * Bootloader - Exit bootloader mode 8386ccb1d8fSSangwon Jee */ 8396ccb1d8fSSangwon Jee static int mip4_bl_exit(struct mip4_ts *ts) 8406ccb1d8fSSangwon Jee { 8416ccb1d8fSSangwon Jee return mip4_bl_change_mode(ts, MIP4_BOOT_MODE_APP); 8426ccb1d8fSSangwon Jee } 8436ccb1d8fSSangwon Jee 8446ccb1d8fSSangwon Jee static int mip4_bl_get_address(struct mip4_ts *ts, u16 *buf_addr) 8456ccb1d8fSSangwon Jee { 8466ccb1d8fSSangwon Jee u8 cmd[] = { MIP4_R0_BOOT, MIP4_R1_BOOT_BUF_ADDR }; 8476ccb1d8fSSangwon Jee u8 result[sizeof(u16)]; 8486ccb1d8fSSangwon Jee struct i2c_msg msg[] = { 8496ccb1d8fSSangwon Jee { 8506ccb1d8fSSangwon Jee .addr = ts->client->addr, 8516ccb1d8fSSangwon Jee .flags = 0, 8526ccb1d8fSSangwon Jee .buf = cmd, 8536ccb1d8fSSangwon Jee .len = sizeof(cmd), 8546ccb1d8fSSangwon Jee }, { 8556ccb1d8fSSangwon Jee .addr = ts->client->addr, 8566ccb1d8fSSangwon Jee .flags = I2C_M_RD, 8576ccb1d8fSSangwon Jee .buf = result, 8586ccb1d8fSSangwon Jee .len = sizeof(result), 8596ccb1d8fSSangwon Jee }, 8606ccb1d8fSSangwon Jee }; 8616ccb1d8fSSangwon Jee int ret; 8626ccb1d8fSSangwon Jee int error; 8636ccb1d8fSSangwon Jee 8646ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); 8656ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) { 8666ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 8676ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 8686ccb1d8fSSangwon Jee "Failed to retrieve bootloader buffer address: %d\n", 8696ccb1d8fSSangwon Jee error); 8706ccb1d8fSSangwon Jee return error; 8716ccb1d8fSSangwon Jee } 8726ccb1d8fSSangwon Jee 8736ccb1d8fSSangwon Jee *buf_addr = get_unaligned_le16(result); 8746ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 8756ccb1d8fSSangwon Jee "Bootloader buffer address %#04x\n", *buf_addr); 8766ccb1d8fSSangwon Jee 8776ccb1d8fSSangwon Jee return 0; 8786ccb1d8fSSangwon Jee } 8796ccb1d8fSSangwon Jee 8806ccb1d8fSSangwon Jee static int mip4_bl_program_page(struct mip4_ts *ts, int offset, 8816ccb1d8fSSangwon Jee const u8 *data, int length, u16 buf_addr) 8826ccb1d8fSSangwon Jee { 8836ccb1d8fSSangwon Jee u8 cmd[6]; 8846ccb1d8fSSangwon Jee u8 *data_buf; 8856ccb1d8fSSangwon Jee u16 buf_offset; 8866ccb1d8fSSangwon Jee int ret; 8876ccb1d8fSSangwon Jee int error; 8886ccb1d8fSSangwon Jee 8896ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Writing page @%#06x (%d)\n", 8906ccb1d8fSSangwon Jee offset, length); 8916ccb1d8fSSangwon Jee 8926ccb1d8fSSangwon Jee if (length > MIP4_BL_PAGE_SIZE || length % MIP4_BL_PACKET_SIZE) { 8936ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 8946ccb1d8fSSangwon Jee "Invalid page length: %d\n", length); 8956ccb1d8fSSangwon Jee return -EINVAL; 8966ccb1d8fSSangwon Jee } 8976ccb1d8fSSangwon Jee 8986ccb1d8fSSangwon Jee data_buf = kmalloc(2 + MIP4_BL_PACKET_SIZE, GFP_KERNEL); 8996ccb1d8fSSangwon Jee if (!data_buf) 9006ccb1d8fSSangwon Jee return -ENOMEM; 9016ccb1d8fSSangwon Jee 9026ccb1d8fSSangwon Jee /* Addr */ 9036ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 9046ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_TARGET_ADDR; 9056ccb1d8fSSangwon Jee put_unaligned_le32(offset, &cmd[2]); 9066ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6); 9076ccb1d8fSSangwon Jee if (ret != 6) { 9086ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 9096ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 9106ccb1d8fSSangwon Jee "Failed to send write page address: %d\n", error); 9116ccb1d8fSSangwon Jee goto out; 9126ccb1d8fSSangwon Jee } 9136ccb1d8fSSangwon Jee 9146ccb1d8fSSangwon Jee /* Size */ 9156ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 9166ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_SIZE; 9176ccb1d8fSSangwon Jee put_unaligned_le32(length, &cmd[2]); 9186ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6); 9196ccb1d8fSSangwon Jee if (ret != 6) { 9206ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 9216ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 9226ccb1d8fSSangwon Jee "Failed to send write page size: %d\n", error); 9236ccb1d8fSSangwon Jee goto out; 9246ccb1d8fSSangwon Jee } 9256ccb1d8fSSangwon Jee 9266ccb1d8fSSangwon Jee /* Data */ 9276ccb1d8fSSangwon Jee for (buf_offset = 0; 9286ccb1d8fSSangwon Jee buf_offset < length; 9296ccb1d8fSSangwon Jee buf_offset += MIP4_BL_PACKET_SIZE) { 9306ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 9316ccb1d8fSSangwon Jee "writing chunk at %#04x (size %d)\n", 9326ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE); 9336ccb1d8fSSangwon Jee put_unaligned_be16(buf_addr + buf_offset, data_buf); 9346ccb1d8fSSangwon Jee memcpy(&data_buf[2], &data[buf_offset], MIP4_BL_PACKET_SIZE); 9356ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, 9366ccb1d8fSSangwon Jee data_buf, 2 + MIP4_BL_PACKET_SIZE); 9376ccb1d8fSSangwon Jee if (ret != 2 + MIP4_BL_PACKET_SIZE) { 9386ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 9396ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 9406ccb1d8fSSangwon Jee "Failed to read chunk at %#04x (size %d): %d\n", 9416ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE, error); 9426ccb1d8fSSangwon Jee goto out; 9436ccb1d8fSSangwon Jee } 9446ccb1d8fSSangwon Jee } 9456ccb1d8fSSangwon Jee 9466ccb1d8fSSangwon Jee /* Command */ 9476ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 9486ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_CMD; 9496ccb1d8fSSangwon Jee cmd[2] = MIP4_BOOT_CMD_PROGRAM; 9506ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 3); 9516ccb1d8fSSangwon Jee if (ret != 3) { 9526ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 9536ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 9546ccb1d8fSSangwon Jee "Failed to send 'write' command: %d\n", error); 9556ccb1d8fSSangwon Jee goto out; 9566ccb1d8fSSangwon Jee } 9576ccb1d8fSSangwon Jee 9586ccb1d8fSSangwon Jee /* Status */ 9596ccb1d8fSSangwon Jee error = mip4_bl_read_status(ts); 9606ccb1d8fSSangwon Jee 9616ccb1d8fSSangwon Jee out: 9626ccb1d8fSSangwon Jee kfree(data_buf); 9636ccb1d8fSSangwon Jee return error ? error : 0; 9646ccb1d8fSSangwon Jee } 9656ccb1d8fSSangwon Jee 9666ccb1d8fSSangwon Jee static int mip4_bl_verify_page(struct mip4_ts *ts, int offset, 9676ccb1d8fSSangwon Jee const u8 *data, int length, int buf_addr) 9686ccb1d8fSSangwon Jee { 9696ccb1d8fSSangwon Jee u8 cmd[8]; 9706ccb1d8fSSangwon Jee u8 *read_buf; 9716ccb1d8fSSangwon Jee int buf_offset; 9726ccb1d8fSSangwon Jee struct i2c_msg msg[] = { 9736ccb1d8fSSangwon Jee { 9746ccb1d8fSSangwon Jee .addr = ts->client->addr, 9756ccb1d8fSSangwon Jee .flags = 0, 9766ccb1d8fSSangwon Jee .buf = cmd, 9776ccb1d8fSSangwon Jee .len = 2, 9786ccb1d8fSSangwon Jee }, { 9796ccb1d8fSSangwon Jee .addr = ts->client->addr, 9806ccb1d8fSSangwon Jee .flags = I2C_M_RD, 9816ccb1d8fSSangwon Jee .len = MIP4_BL_PACKET_SIZE, 9826ccb1d8fSSangwon Jee }, 9836ccb1d8fSSangwon Jee }; 9846ccb1d8fSSangwon Jee int ret; 9856ccb1d8fSSangwon Jee int error; 9866ccb1d8fSSangwon Jee 9876ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "Validating page @%#06x (%d)\n", 9886ccb1d8fSSangwon Jee offset, length); 9896ccb1d8fSSangwon Jee 9906ccb1d8fSSangwon Jee /* Addr */ 9916ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 9926ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_TARGET_ADDR; 9936ccb1d8fSSangwon Jee put_unaligned_le32(offset, &cmd[2]); 9946ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6); 9956ccb1d8fSSangwon Jee if (ret != 6) { 9966ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 9976ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 9986ccb1d8fSSangwon Jee "Failed to send read page address: %d\n", error); 9996ccb1d8fSSangwon Jee return error; 10006ccb1d8fSSangwon Jee } 10016ccb1d8fSSangwon Jee 10026ccb1d8fSSangwon Jee /* Size */ 10036ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 10046ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_SIZE; 10056ccb1d8fSSangwon Jee put_unaligned_le32(length, &cmd[2]); 10066ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 6); 10076ccb1d8fSSangwon Jee if (ret != 6) { 10086ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 10096ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 10106ccb1d8fSSangwon Jee "Failed to send read page size: %d\n", error); 10116ccb1d8fSSangwon Jee return error; 10126ccb1d8fSSangwon Jee } 10136ccb1d8fSSangwon Jee 10146ccb1d8fSSangwon Jee /* Command */ 10156ccb1d8fSSangwon Jee cmd[0] = MIP4_R0_BOOT; 10166ccb1d8fSSangwon Jee cmd[1] = MIP4_R1_BOOT_CMD; 10176ccb1d8fSSangwon Jee cmd[2] = MIP4_BOOT_CMD_READ; 10186ccb1d8fSSangwon Jee ret = i2c_master_send(ts->client, cmd, 3); 10196ccb1d8fSSangwon Jee if (ret != 3) { 10206ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 10216ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 10226ccb1d8fSSangwon Jee "Failed to send 'read' command: %d\n", error); 10236ccb1d8fSSangwon Jee return error; 10246ccb1d8fSSangwon Jee } 10256ccb1d8fSSangwon Jee 10266ccb1d8fSSangwon Jee /* Status */ 10276ccb1d8fSSangwon Jee error = mip4_bl_read_status(ts); 10286ccb1d8fSSangwon Jee if (error) 10296ccb1d8fSSangwon Jee return error; 10306ccb1d8fSSangwon Jee 10316ccb1d8fSSangwon Jee /* Read */ 10326ccb1d8fSSangwon Jee msg[1].buf = read_buf = kmalloc(MIP4_BL_PACKET_SIZE, GFP_KERNEL); 10336ccb1d8fSSangwon Jee if (!read_buf) 10346ccb1d8fSSangwon Jee return -ENOMEM; 10356ccb1d8fSSangwon Jee 10366ccb1d8fSSangwon Jee for (buf_offset = 0; 10376ccb1d8fSSangwon Jee buf_offset < length; 10386ccb1d8fSSangwon Jee buf_offset += MIP4_BL_PACKET_SIZE) { 10396ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 10406ccb1d8fSSangwon Jee "reading chunk at %#04x (size %d)\n", 10416ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE); 10426ccb1d8fSSangwon Jee put_unaligned_be16(buf_addr + buf_offset, cmd); 10436ccb1d8fSSangwon Jee ret = i2c_transfer(ts->client->adapter, msg, ARRAY_SIZE(msg)); 10446ccb1d8fSSangwon Jee if (ret != ARRAY_SIZE(msg)) { 10456ccb1d8fSSangwon Jee error = ret < 0 ? ret : -EIO; 10466ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 10476ccb1d8fSSangwon Jee "Failed to read chunk at %#04x (size %d): %d\n", 10486ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE, error); 10496ccb1d8fSSangwon Jee break; 10506ccb1d8fSSangwon Jee } 10516ccb1d8fSSangwon Jee 10526ccb1d8fSSangwon Jee if (memcmp(&data[buf_offset], read_buf, MIP4_BL_PACKET_SIZE)) { 10536ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 10546ccb1d8fSSangwon Jee "Failed to validate chunk at %#04x (size %d)\n", 10556ccb1d8fSSangwon Jee buf_offset, MIP4_BL_PACKET_SIZE); 10566ccb1d8fSSangwon Jee #if MIP4_FW_UPDATE_DEBUG 10576ccb1d8fSSangwon Jee print_hex_dump(KERN_DEBUG, 10586ccb1d8fSSangwon Jee MIP4_DEVICE_NAME " F/W File: ", 10596ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1, 10606ccb1d8fSSangwon Jee data + offset, MIP4_BL_PACKET_SIZE, 10616ccb1d8fSSangwon Jee false); 10626ccb1d8fSSangwon Jee print_hex_dump(KERN_DEBUG, 10636ccb1d8fSSangwon Jee MIP4_DEVICE_NAME " F/W Chip: ", 10646ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1, 10656ccb1d8fSSangwon Jee read_buf, MIP4_BL_PAGE_SIZE, false); 10666ccb1d8fSSangwon Jee #endif 10676ccb1d8fSSangwon Jee error = -EINVAL; 10686ccb1d8fSSangwon Jee break; 10696ccb1d8fSSangwon Jee } 10706ccb1d8fSSangwon Jee } 10716ccb1d8fSSangwon Jee 10726ccb1d8fSSangwon Jee kfree(read_buf); 10736ccb1d8fSSangwon Jee return error ? error : 0; 10746ccb1d8fSSangwon Jee } 10756ccb1d8fSSangwon Jee 10766ccb1d8fSSangwon Jee /* 10776ccb1d8fSSangwon Jee * Flash chip firmware 10786ccb1d8fSSangwon Jee */ 10796ccb1d8fSSangwon Jee static int mip4_flash_fw(struct mip4_ts *ts, 10806ccb1d8fSSangwon Jee const u8 *fw_data, u32 fw_size, u32 fw_offset) 10816ccb1d8fSSangwon Jee { 10826ccb1d8fSSangwon Jee struct i2c_client *client = ts->client; 10836ccb1d8fSSangwon Jee int offset; 10846ccb1d8fSSangwon Jee u16 buf_addr; 10856ccb1d8fSSangwon Jee int error, error2; 10866ccb1d8fSSangwon Jee 10876ccb1d8fSSangwon Jee /* Enter bootloader mode */ 10886ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Entering bootloader mode\n"); 10896ccb1d8fSSangwon Jee 10906ccb1d8fSSangwon Jee error = mip4_bl_enter(ts); 10916ccb1d8fSSangwon Jee if (error) { 10926ccb1d8fSSangwon Jee dev_err(&client->dev, 10936ccb1d8fSSangwon Jee "Failed to enter bootloader mode: %d\n", 10946ccb1d8fSSangwon Jee error); 10956ccb1d8fSSangwon Jee return error; 10966ccb1d8fSSangwon Jee } 10976ccb1d8fSSangwon Jee 10986ccb1d8fSSangwon Jee /* Read info */ 10996ccb1d8fSSangwon Jee error = mip4_bl_get_address(ts, &buf_addr); 11006ccb1d8fSSangwon Jee if (error) 11016ccb1d8fSSangwon Jee goto exit_bl; 11026ccb1d8fSSangwon Jee 11036ccb1d8fSSangwon Jee /* Program & Verify */ 11046ccb1d8fSSangwon Jee dev_dbg(&client->dev, 11056ccb1d8fSSangwon Jee "Program & Verify, page size: %d, packet size: %d\n", 11066ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, MIP4_BL_PACKET_SIZE); 11076ccb1d8fSSangwon Jee 11086ccb1d8fSSangwon Jee for (offset = fw_offset; 11096ccb1d8fSSangwon Jee offset < fw_offset + fw_size; 11106ccb1d8fSSangwon Jee offset += MIP4_BL_PAGE_SIZE) { 11116ccb1d8fSSangwon Jee /* Program */ 11126ccb1d8fSSangwon Jee error = mip4_bl_program_page(ts, offset, fw_data + offset, 11136ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, buf_addr); 11146ccb1d8fSSangwon Jee if (error) 11156ccb1d8fSSangwon Jee break; 11166ccb1d8fSSangwon Jee 11176ccb1d8fSSangwon Jee /* Verify */ 11186ccb1d8fSSangwon Jee error = mip4_bl_verify_page(ts, offset, fw_data + offset, 11196ccb1d8fSSangwon Jee MIP4_BL_PAGE_SIZE, buf_addr); 11206ccb1d8fSSangwon Jee if (error) 11216ccb1d8fSSangwon Jee break; 11226ccb1d8fSSangwon Jee } 11236ccb1d8fSSangwon Jee 11246ccb1d8fSSangwon Jee exit_bl: 11256ccb1d8fSSangwon Jee /* Exit bootloader mode */ 11266ccb1d8fSSangwon Jee dev_dbg(&client->dev, "Exiting bootloader mode\n"); 11276ccb1d8fSSangwon Jee 11286ccb1d8fSSangwon Jee error2 = mip4_bl_exit(ts); 11296ccb1d8fSSangwon Jee if (error2) { 11306ccb1d8fSSangwon Jee dev_err(&client->dev, 11316ccb1d8fSSangwon Jee "Failed to exit bootloader mode: %d\n", error2); 11326ccb1d8fSSangwon Jee if (!error) 11336ccb1d8fSSangwon Jee error = error2; 11346ccb1d8fSSangwon Jee } 11356ccb1d8fSSangwon Jee 11366ccb1d8fSSangwon Jee /* Reset chip */ 11376ccb1d8fSSangwon Jee mip4_power_off(ts); 11386ccb1d8fSSangwon Jee mip4_power_on(ts); 11396ccb1d8fSSangwon Jee 11406ccb1d8fSSangwon Jee mip4_query_device(ts); 11416ccb1d8fSSangwon Jee 11426ccb1d8fSSangwon Jee /* Refresh device parameters */ 11436ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, ts->max_x, 0, 0); 11446ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, ts->max_y, 0, 0); 11456ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_X, 0, ts->max_x, 0, 0); 11466ccb1d8fSSangwon Jee input_set_abs_params(ts->input, ABS_Y, 0, ts->max_y, 0, 0); 11477a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->ppm_x); 11487a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->ppm_y); 11497a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_X, ts->ppm_x); 11507a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_Y, ts->ppm_y); 11516ccb1d8fSSangwon Jee 11526ccb1d8fSSangwon Jee return error ? error : 0; 11536ccb1d8fSSangwon Jee } 11546ccb1d8fSSangwon Jee 11556ccb1d8fSSangwon Jee static int mip4_parse_firmware(struct mip4_ts *ts, const struct firmware *fw, 11566ccb1d8fSSangwon Jee u32 *fw_offset_start, u32 *fw_size, 11576ccb1d8fSSangwon Jee const struct mip4_bin_tail **pfw_info) 11586ccb1d8fSSangwon Jee { 11596ccb1d8fSSangwon Jee const struct mip4_bin_tail *fw_info; 11606ccb1d8fSSangwon Jee struct mip4_fw_version fw_version; 11616ccb1d8fSSangwon Jee u16 tail_size; 11626ccb1d8fSSangwon Jee 11636ccb1d8fSSangwon Jee if (fw->size < MIP4_BIN_TAIL_SIZE) { 11646ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 11656ccb1d8fSSangwon Jee "Invalid firmware, size mismatch (tail %zd vs %zd)\n", 11666ccb1d8fSSangwon Jee MIP4_BIN_TAIL_SIZE, fw->size); 11676ccb1d8fSSangwon Jee return -EINVAL; 11686ccb1d8fSSangwon Jee } 11696ccb1d8fSSangwon Jee 11706ccb1d8fSSangwon Jee fw_info = (const void *)&fw->data[fw->size - MIP4_BIN_TAIL_SIZE]; 11716ccb1d8fSSangwon Jee 11726ccb1d8fSSangwon Jee #if MIP4_FW_UPDATE_DEBUG 11736ccb1d8fSSangwon Jee print_hex_dump(KERN_ERR, MIP4_DEVICE_NAME " Bin Info: ", 11746ccb1d8fSSangwon Jee DUMP_PREFIX_OFFSET, 16, 1, *fw_info, tail_size, false); 11756ccb1d8fSSangwon Jee #endif 11766ccb1d8fSSangwon Jee 11776ccb1d8fSSangwon Jee tail_size = get_unaligned_le16(&fw_info->tail_size); 11786ccb1d8fSSangwon Jee if (tail_size != MIP4_BIN_TAIL_SIZE) { 11796ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 11806ccb1d8fSSangwon Jee "wrong tail size: %d (expected %zd)\n", 11816ccb1d8fSSangwon Jee tail_size, MIP4_BIN_TAIL_SIZE); 11826ccb1d8fSSangwon Jee return -EINVAL; 11836ccb1d8fSSangwon Jee } 11846ccb1d8fSSangwon Jee 11856ccb1d8fSSangwon Jee /* Check bin format */ 11866ccb1d8fSSangwon Jee if (memcmp(fw_info->tail_mark, MIP4_BIN_TAIL_MARK, 11876ccb1d8fSSangwon Jee sizeof(fw_info->tail_mark))) { 11886ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 11896ccb1d8fSSangwon Jee "unable to locate tail marker (%*ph vs %*ph)\n", 11906ccb1d8fSSangwon Jee (int)sizeof(fw_info->tail_mark), fw_info->tail_mark, 11916ccb1d8fSSangwon Jee (int)sizeof(fw_info->tail_mark), MIP4_BIN_TAIL_MARK); 11926ccb1d8fSSangwon Jee return -EINVAL; 11936ccb1d8fSSangwon Jee } 11946ccb1d8fSSangwon Jee 11956ccb1d8fSSangwon Jee *fw_offset_start = get_unaligned_le32(&fw_info->bin_start_addr); 11966ccb1d8fSSangwon Jee *fw_size = get_unaligned_le32(&fw_info->bin_length); 11976ccb1d8fSSangwon Jee 11986ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 11996ccb1d8fSSangwon Jee "F/W Data offset: %#08x, size: %d\n", 12006ccb1d8fSSangwon Jee *fw_offset_start, *fw_size); 12016ccb1d8fSSangwon Jee 12026ccb1d8fSSangwon Jee if (*fw_size % MIP4_BL_PAGE_SIZE) { 12036ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 12046ccb1d8fSSangwon Jee "encoded fw length %d is not multiple of pages (%d)\n", 12056ccb1d8fSSangwon Jee *fw_size, MIP4_BL_PAGE_SIZE); 12066ccb1d8fSSangwon Jee return -EINVAL; 12076ccb1d8fSSangwon Jee } 12086ccb1d8fSSangwon Jee 12096ccb1d8fSSangwon Jee if (fw->size != *fw_offset_start + *fw_size) { 12106ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 12116ccb1d8fSSangwon Jee "Wrong firmware size, expected %d bytes, got %zd\n", 12126ccb1d8fSSangwon Jee *fw_offset_start + *fw_size, fw->size); 12136ccb1d8fSSangwon Jee return -EINVAL; 12146ccb1d8fSSangwon Jee } 12156ccb1d8fSSangwon Jee 12166ccb1d8fSSangwon Jee mip4_parse_fw_version((const u8 *)&fw_info->ver_boot, &fw_version); 12176ccb1d8fSSangwon Jee 12186ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, 12196ccb1d8fSSangwon Jee "F/W file version %04X %04X %04X %04X\n", 12206ccb1d8fSSangwon Jee fw_version.boot, fw_version.core, 12216ccb1d8fSSangwon Jee fw_version.app, fw_version.param); 12226ccb1d8fSSangwon Jee 12236ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W chip version: %04X %04X %04X %04X\n", 12246ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core, 12256ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param); 12266ccb1d8fSSangwon Jee 12276ccb1d8fSSangwon Jee /* Check F/W type */ 12286ccb1d8fSSangwon Jee if (fw_version.boot != 0xEEEE && fw_version.boot != 0xFFFF && 12296ccb1d8fSSangwon Jee fw_version.core == 0xEEEE && 12306ccb1d8fSSangwon Jee fw_version.app == 0xEEEE && 12316ccb1d8fSSangwon Jee fw_version.param == 0xEEEE) { 12326ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W type: Bootloader\n"); 12336ccb1d8fSSangwon Jee } else if (fw_version.boot == 0xEEEE && 12346ccb1d8fSSangwon Jee fw_version.core != 0xEEEE && fw_version.core != 0xFFFF && 12356ccb1d8fSSangwon Jee fw_version.app != 0xEEEE && fw_version.app != 0xFFFF && 12366ccb1d8fSSangwon Jee fw_version.param != 0xEEEE && fw_version.param != 0xFFFF) { 12376ccb1d8fSSangwon Jee dev_dbg(&ts->client->dev, "F/W type: Main\n"); 12386ccb1d8fSSangwon Jee } else { 12396ccb1d8fSSangwon Jee dev_err(&ts->client->dev, "Wrong firmware type\n"); 12406ccb1d8fSSangwon Jee return -EINVAL; 12416ccb1d8fSSangwon Jee } 12426ccb1d8fSSangwon Jee 12436ccb1d8fSSangwon Jee return 0; 12446ccb1d8fSSangwon Jee } 12456ccb1d8fSSangwon Jee 12466ccb1d8fSSangwon Jee static int mip4_execute_fw_update(struct mip4_ts *ts, const struct firmware *fw) 12476ccb1d8fSSangwon Jee { 12486ccb1d8fSSangwon Jee const struct mip4_bin_tail *fw_info; 12496ccb1d8fSSangwon Jee u32 fw_start_offset; 12506ccb1d8fSSangwon Jee u32 fw_size; 12516ccb1d8fSSangwon Jee int retires = 3; 12526ccb1d8fSSangwon Jee int error; 12536ccb1d8fSSangwon Jee 12546ccb1d8fSSangwon Jee error = mip4_parse_firmware(ts, fw, 12556ccb1d8fSSangwon Jee &fw_start_offset, &fw_size, &fw_info); 12566ccb1d8fSSangwon Jee if (error) 12576ccb1d8fSSangwon Jee return error; 12586ccb1d8fSSangwon Jee 1259d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(ts->input)) { 12606ccb1d8fSSangwon Jee disable_irq(ts->client->irq); 12616ccb1d8fSSangwon Jee } else { 12626ccb1d8fSSangwon Jee error = mip4_power_on(ts); 12636ccb1d8fSSangwon Jee if (error) 12646ccb1d8fSSangwon Jee return error; 12656ccb1d8fSSangwon Jee } 12666ccb1d8fSSangwon Jee 12676ccb1d8fSSangwon Jee /* Update firmware */ 12686ccb1d8fSSangwon Jee do { 12696ccb1d8fSSangwon Jee error = mip4_flash_fw(ts, fw->data, fw_size, fw_start_offset); 12706ccb1d8fSSangwon Jee if (!error) 12716ccb1d8fSSangwon Jee break; 12726ccb1d8fSSangwon Jee } while (--retires); 12736ccb1d8fSSangwon Jee 12746ccb1d8fSSangwon Jee if (error) 12756ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 12766ccb1d8fSSangwon Jee "Failed to flash firmware: %d\n", error); 12776ccb1d8fSSangwon Jee 12786ccb1d8fSSangwon Jee /* Enable IRQ */ 1279d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(ts->input)) 12806ccb1d8fSSangwon Jee enable_irq(ts->client->irq); 12816ccb1d8fSSangwon Jee else 12826ccb1d8fSSangwon Jee mip4_power_off(ts); 12836ccb1d8fSSangwon Jee 12846ccb1d8fSSangwon Jee return error ? error : 0; 12856ccb1d8fSSangwon Jee } 12866ccb1d8fSSangwon Jee 12876ccb1d8fSSangwon Jee static ssize_t mip4_sysfs_fw_update(struct device *dev, 12886ccb1d8fSSangwon Jee struct device_attribute *attr, 12896ccb1d8fSSangwon Jee const char *buf, size_t count) 12906ccb1d8fSSangwon Jee { 12916ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev); 12926ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 12936ccb1d8fSSangwon Jee const struct firmware *fw; 12946ccb1d8fSSangwon Jee int error; 12956ccb1d8fSSangwon Jee 1296c2c4ba82SSangwon Jee error = request_firmware(&fw, ts->fw_name, dev); 12976ccb1d8fSSangwon Jee if (error) { 12986ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 12996ccb1d8fSSangwon Jee "Failed to retrieve firmware %s: %d\n", 1300c2c4ba82SSangwon Jee ts->fw_name, error); 13016ccb1d8fSSangwon Jee return error; 13026ccb1d8fSSangwon Jee } 13036ccb1d8fSSangwon Jee 13046ccb1d8fSSangwon Jee /* 13056ccb1d8fSSangwon Jee * Take input mutex to prevent racing with itself and also with 13066ccb1d8fSSangwon Jee * userspace opening and closing the device and also suspend/resume 13076ccb1d8fSSangwon Jee * transitions. 13086ccb1d8fSSangwon Jee */ 13096ccb1d8fSSangwon Jee mutex_lock(&ts->input->mutex); 13106ccb1d8fSSangwon Jee 13116ccb1d8fSSangwon Jee error = mip4_execute_fw_update(ts, fw); 13126ccb1d8fSSangwon Jee 13136ccb1d8fSSangwon Jee mutex_unlock(&ts->input->mutex); 13146ccb1d8fSSangwon Jee 13156ccb1d8fSSangwon Jee release_firmware(fw); 13166ccb1d8fSSangwon Jee 13176ccb1d8fSSangwon Jee if (error) { 13186ccb1d8fSSangwon Jee dev_err(&ts->client->dev, 13196ccb1d8fSSangwon Jee "Firmware update failed: %d\n", error); 13206ccb1d8fSSangwon Jee return error; 13216ccb1d8fSSangwon Jee } 13226ccb1d8fSSangwon Jee 13236ccb1d8fSSangwon Jee return count; 13246ccb1d8fSSangwon Jee } 13256ccb1d8fSSangwon Jee 13266ccb1d8fSSangwon Jee static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mip4_sysfs_fw_update); 13276ccb1d8fSSangwon Jee 13286ccb1d8fSSangwon Jee static ssize_t mip4_sysfs_read_fw_version(struct device *dev, 13296ccb1d8fSSangwon Jee struct device_attribute *attr, 13306ccb1d8fSSangwon Jee char *buf) 13316ccb1d8fSSangwon Jee { 13326ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev); 13336ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 13346ccb1d8fSSangwon Jee size_t count; 13356ccb1d8fSSangwon Jee 13366ccb1d8fSSangwon Jee /* Take lock to prevent racing with firmware update */ 13376ccb1d8fSSangwon Jee mutex_lock(&ts->input->mutex); 13386ccb1d8fSSangwon Jee 13396ccb1d8fSSangwon Jee count = snprintf(buf, PAGE_SIZE, "%04X %04X %04X %04X\n", 13406ccb1d8fSSangwon Jee ts->fw_version.boot, ts->fw_version.core, 13416ccb1d8fSSangwon Jee ts->fw_version.app, ts->fw_version.param); 13426ccb1d8fSSangwon Jee 13436ccb1d8fSSangwon Jee mutex_unlock(&ts->input->mutex); 13446ccb1d8fSSangwon Jee 13456ccb1d8fSSangwon Jee return count; 13466ccb1d8fSSangwon Jee } 13476ccb1d8fSSangwon Jee 13486ccb1d8fSSangwon Jee static DEVICE_ATTR(fw_version, S_IRUGO, mip4_sysfs_read_fw_version, NULL); 13496ccb1d8fSSangwon Jee 13509aa40426SSangwon Jee static ssize_t mip4_sysfs_read_hw_version(struct device *dev, 13519aa40426SSangwon Jee struct device_attribute *attr, 13529aa40426SSangwon Jee char *buf) 13539aa40426SSangwon Jee { 13549aa40426SSangwon Jee struct i2c_client *client = to_i2c_client(dev); 13559aa40426SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 13569aa40426SSangwon Jee size_t count; 13579aa40426SSangwon Jee 13589aa40426SSangwon Jee /* Take lock to prevent racing with firmware update */ 13599aa40426SSangwon Jee mutex_lock(&ts->input->mutex); 13609aa40426SSangwon Jee 13619aa40426SSangwon Jee /* 13629aa40426SSangwon Jee * product_name shows the name or version of the hardware 13639aa40426SSangwon Jee * paired with current firmware in the chip. 13649aa40426SSangwon Jee */ 13659aa40426SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%.*s\n", 13669aa40426SSangwon Jee (int)sizeof(ts->product_name), ts->product_name); 13679aa40426SSangwon Jee 13689aa40426SSangwon Jee mutex_unlock(&ts->input->mutex); 13699aa40426SSangwon Jee 13709aa40426SSangwon Jee return count; 13719aa40426SSangwon Jee } 13729aa40426SSangwon Jee 13739aa40426SSangwon Jee static DEVICE_ATTR(hw_version, S_IRUGO, mip4_sysfs_read_hw_version, NULL); 13749aa40426SSangwon Jee 1375e2aad666SSangwon Jee static ssize_t mip4_sysfs_read_product_id(struct device *dev, 1376e2aad666SSangwon Jee struct device_attribute *attr, 1377e2aad666SSangwon Jee char *buf) 1378e2aad666SSangwon Jee { 1379e2aad666SSangwon Jee struct i2c_client *client = to_i2c_client(dev); 1380e2aad666SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 1381e2aad666SSangwon Jee size_t count; 1382e2aad666SSangwon Jee 1383e2aad666SSangwon Jee mutex_lock(&ts->input->mutex); 1384e2aad666SSangwon Jee 1385e2aad666SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%04X\n", ts->product_id); 1386e2aad666SSangwon Jee 1387e2aad666SSangwon Jee mutex_unlock(&ts->input->mutex); 1388e2aad666SSangwon Jee 1389e2aad666SSangwon Jee return count; 1390e2aad666SSangwon Jee } 1391e2aad666SSangwon Jee 1392e2aad666SSangwon Jee static DEVICE_ATTR(product_id, S_IRUGO, mip4_sysfs_read_product_id, NULL); 1393e2aad666SSangwon Jee 13944e1bff07SSangwon Jee static ssize_t mip4_sysfs_read_ic_name(struct device *dev, 13954e1bff07SSangwon Jee struct device_attribute *attr, 13964e1bff07SSangwon Jee char *buf) 13974e1bff07SSangwon Jee { 13984e1bff07SSangwon Jee struct i2c_client *client = to_i2c_client(dev); 13994e1bff07SSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 14004e1bff07SSangwon Jee size_t count; 14014e1bff07SSangwon Jee 14024e1bff07SSangwon Jee mutex_lock(&ts->input->mutex); 14034e1bff07SSangwon Jee 14044e1bff07SSangwon Jee count = snprintf(buf, PAGE_SIZE, "%.*s\n", 14054e1bff07SSangwon Jee (int)sizeof(ts->ic_name), ts->ic_name); 14064e1bff07SSangwon Jee 14074e1bff07SSangwon Jee mutex_unlock(&ts->input->mutex); 14084e1bff07SSangwon Jee 14094e1bff07SSangwon Jee return count; 14104e1bff07SSangwon Jee } 14114e1bff07SSangwon Jee 14124e1bff07SSangwon Jee static DEVICE_ATTR(ic_name, S_IRUGO, mip4_sysfs_read_ic_name, NULL); 14134e1bff07SSangwon Jee 14146ccb1d8fSSangwon Jee static struct attribute *mip4_attrs[] = { 14156ccb1d8fSSangwon Jee &dev_attr_fw_version.attr, 14169aa40426SSangwon Jee &dev_attr_hw_version.attr, 1417e2aad666SSangwon Jee &dev_attr_product_id.attr, 14184e1bff07SSangwon Jee &dev_attr_ic_name.attr, 14196ccb1d8fSSangwon Jee &dev_attr_update_fw.attr, 14206ccb1d8fSSangwon Jee NULL, 14216ccb1d8fSSangwon Jee }; 14226ccb1d8fSSangwon Jee 14236ccb1d8fSSangwon Jee static const struct attribute_group mip4_attr_group = { 14246ccb1d8fSSangwon Jee .attrs = mip4_attrs, 14256ccb1d8fSSangwon Jee }; 14266ccb1d8fSSangwon Jee 14275a2b1cf3SUwe Kleine-König static int mip4_probe(struct i2c_client *client) 14286ccb1d8fSSangwon Jee { 14296ccb1d8fSSangwon Jee struct mip4_ts *ts; 14306ccb1d8fSSangwon Jee struct input_dev *input; 14316ccb1d8fSSangwon Jee int error; 14326ccb1d8fSSangwon Jee 14336ccb1d8fSSangwon Jee if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { 14346ccb1d8fSSangwon Jee dev_err(&client->dev, "Not supported I2C adapter\n"); 14356ccb1d8fSSangwon Jee return -ENXIO; 14366ccb1d8fSSangwon Jee } 14376ccb1d8fSSangwon Jee 14386ccb1d8fSSangwon Jee ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); 14396ccb1d8fSSangwon Jee if (!ts) 14406ccb1d8fSSangwon Jee return -ENOMEM; 14416ccb1d8fSSangwon Jee 14426ccb1d8fSSangwon Jee input = devm_input_allocate_device(&client->dev); 14436ccb1d8fSSangwon Jee if (!input) 14446ccb1d8fSSangwon Jee return -ENOMEM; 14456ccb1d8fSSangwon Jee 14466ccb1d8fSSangwon Jee ts->client = client; 14476ccb1d8fSSangwon Jee ts->input = input; 14486ccb1d8fSSangwon Jee 14496ccb1d8fSSangwon Jee snprintf(ts->phys, sizeof(ts->phys), 14506ccb1d8fSSangwon Jee "%s/input0", dev_name(&client->dev)); 14516ccb1d8fSSangwon Jee 14526ccb1d8fSSangwon Jee ts->gpio_ce = devm_gpiod_get_optional(&client->dev, 14536ccb1d8fSSangwon Jee "ce", GPIOD_OUT_LOW); 14546ccb1d8fSSangwon Jee if (IS_ERR(ts->gpio_ce)) { 14556ccb1d8fSSangwon Jee error = PTR_ERR(ts->gpio_ce); 1456a54dc27bSYang Yingliang if (error != -EPROBE_DEFER) 14576ccb1d8fSSangwon Jee dev_err(&client->dev, 14586ccb1d8fSSangwon Jee "Failed to get gpio: %d\n", error); 14596ccb1d8fSSangwon Jee return error; 14606ccb1d8fSSangwon Jee } 14616ccb1d8fSSangwon Jee 14626ccb1d8fSSangwon Jee error = mip4_power_on(ts); 14636ccb1d8fSSangwon Jee if (error) 14646ccb1d8fSSangwon Jee return error; 14656ccb1d8fSSangwon Jee error = mip4_query_device(ts); 14666ccb1d8fSSangwon Jee mip4_power_off(ts); 14676ccb1d8fSSangwon Jee if (error) 14686ccb1d8fSSangwon Jee return error; 14696ccb1d8fSSangwon Jee 14706ccb1d8fSSangwon Jee input->name = "MELFAS MIP4 Touchscreen"; 14716ccb1d8fSSangwon Jee input->phys = ts->phys; 14726ccb1d8fSSangwon Jee 14736ccb1d8fSSangwon Jee input->id.bustype = BUS_I2C; 14746ccb1d8fSSangwon Jee input->id.vendor = 0x13c5; 1475c3fc6089SSangwon Jee input->id.product = ts->product_id; 14766ccb1d8fSSangwon Jee 14776ccb1d8fSSangwon Jee input->open = mip4_input_open; 14786ccb1d8fSSangwon Jee input->close = mip4_input_close; 14796ccb1d8fSSangwon Jee 14806ccb1d8fSSangwon Jee input_set_drvdata(input, ts); 14816ccb1d8fSSangwon Jee 14826ccb1d8fSSangwon Jee input->keycode = ts->key_code; 14836ccb1d8fSSangwon Jee input->keycodesize = sizeof(*ts->key_code); 14846ccb1d8fSSangwon Jee input->keycodemax = ts->key_num; 14856ccb1d8fSSangwon Jee 14866ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_POSITION_X, 0, ts->max_x, 0, 0); 14876ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ts->max_y, 0, 0); 14886ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_PRESSURE, 14896ccb1d8fSSangwon Jee MIP4_PRESSURE_MIN, MIP4_PRESSURE_MAX, 0, 0); 14906ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 14916ccb1d8fSSangwon Jee MIP4_TOUCH_MAJOR_MIN, MIP4_TOUCH_MAJOR_MAX, 0, 0); 14926ccb1d8fSSangwon Jee input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 14936ccb1d8fSSangwon Jee MIP4_TOUCH_MINOR_MIN, MIP4_TOUCH_MINOR_MAX, 0, 0); 14947a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->ppm_x); 14957a3ed686SSangwon Jee input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->ppm_y); 14966ccb1d8fSSangwon Jee 14976ccb1d8fSSangwon Jee error = input_mt_init_slots(input, MIP4_MAX_FINGERS, INPUT_MT_DIRECT); 14986ccb1d8fSSangwon Jee if (error) 14996ccb1d8fSSangwon Jee return error; 15006ccb1d8fSSangwon Jee 15016ccb1d8fSSangwon Jee i2c_set_clientdata(client, ts); 15026ccb1d8fSSangwon Jee 15036ccb1d8fSSangwon Jee error = devm_request_threaded_irq(&client->dev, client->irq, 15046ccb1d8fSSangwon Jee NULL, mip4_interrupt, 1505bcd9730aSBarry Song IRQF_ONESHOT | IRQF_NO_AUTOEN, 1506bcd9730aSBarry Song MIP4_DEVICE_NAME, ts); 15076ccb1d8fSSangwon Jee if (error) { 15086ccb1d8fSSangwon Jee dev_err(&client->dev, 15096ccb1d8fSSangwon Jee "Failed to request interrupt %d: %d\n", 15106ccb1d8fSSangwon Jee client->irq, error); 15116ccb1d8fSSangwon Jee return error; 15126ccb1d8fSSangwon Jee } 15136ccb1d8fSSangwon Jee 15146ccb1d8fSSangwon Jee error = input_register_device(input); 15156ccb1d8fSSangwon Jee if (error) { 15166ccb1d8fSSangwon Jee dev_err(&client->dev, 15176ccb1d8fSSangwon Jee "Failed to register input device: %d\n", error); 15186ccb1d8fSSangwon Jee return error; 15196ccb1d8fSSangwon Jee } 15206ccb1d8fSSangwon Jee 15214c16f82eSAndi Shyti error = devm_device_add_group(&client->dev, &mip4_attr_group); 15226ccb1d8fSSangwon Jee if (error) { 15236ccb1d8fSSangwon Jee dev_err(&client->dev, 15246ccb1d8fSSangwon Jee "Failed to create sysfs attribute group: %d\n", error); 15256ccb1d8fSSangwon Jee return error; 15266ccb1d8fSSangwon Jee } 15276ccb1d8fSSangwon Jee 15286ccb1d8fSSangwon Jee return 0; 15296ccb1d8fSSangwon Jee } 15306ccb1d8fSSangwon Jee 1531*e6a80bceSJonathan Cameron static int mip4_suspend(struct device *dev) 15326ccb1d8fSSangwon Jee { 15336ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev); 15346ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 15356ccb1d8fSSangwon Jee struct input_dev *input = ts->input; 15366ccb1d8fSSangwon Jee 15376ccb1d8fSSangwon Jee mutex_lock(&input->mutex); 15386ccb1d8fSSangwon Jee 15396ccb1d8fSSangwon Jee if (device_may_wakeup(dev)) 15406ccb1d8fSSangwon Jee ts->wake_irq_enabled = enable_irq_wake(client->irq) == 0; 1541d69f0a43SAndrzej Pietrasiewicz else if (input_device_enabled(input)) 15426ccb1d8fSSangwon Jee mip4_disable(ts); 15436ccb1d8fSSangwon Jee 15446ccb1d8fSSangwon Jee mutex_unlock(&input->mutex); 15456ccb1d8fSSangwon Jee 15466ccb1d8fSSangwon Jee return 0; 15476ccb1d8fSSangwon Jee } 15486ccb1d8fSSangwon Jee 1549*e6a80bceSJonathan Cameron static int mip4_resume(struct device *dev) 15506ccb1d8fSSangwon Jee { 15516ccb1d8fSSangwon Jee struct i2c_client *client = to_i2c_client(dev); 15526ccb1d8fSSangwon Jee struct mip4_ts *ts = i2c_get_clientdata(client); 15536ccb1d8fSSangwon Jee struct input_dev *input = ts->input; 15546ccb1d8fSSangwon Jee 15556ccb1d8fSSangwon Jee mutex_lock(&input->mutex); 15566ccb1d8fSSangwon Jee 15576ccb1d8fSSangwon Jee if (ts->wake_irq_enabled) 15586ccb1d8fSSangwon Jee disable_irq_wake(client->irq); 1559d69f0a43SAndrzej Pietrasiewicz else if (input_device_enabled(input)) 15606ccb1d8fSSangwon Jee mip4_enable(ts); 15616ccb1d8fSSangwon Jee 15626ccb1d8fSSangwon Jee mutex_unlock(&input->mutex); 15636ccb1d8fSSangwon Jee 15646ccb1d8fSSangwon Jee return 0; 15656ccb1d8fSSangwon Jee } 15666ccb1d8fSSangwon Jee 1567*e6a80bceSJonathan Cameron static DEFINE_SIMPLE_DEV_PM_OPS(mip4_pm_ops, mip4_suspend, mip4_resume); 15686ccb1d8fSSangwon Jee 15696ccb1d8fSSangwon Jee #ifdef CONFIG_OF 15706ccb1d8fSSangwon Jee static const struct of_device_id mip4_of_match[] = { 15716ccb1d8fSSangwon Jee { .compatible = "melfas,"MIP4_DEVICE_NAME, }, 15726ccb1d8fSSangwon Jee { }, 15736ccb1d8fSSangwon Jee }; 15746ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(of, mip4_of_match); 15756ccb1d8fSSangwon Jee #endif 15766ccb1d8fSSangwon Jee 15776ccb1d8fSSangwon Jee #ifdef CONFIG_ACPI 15786ccb1d8fSSangwon Jee static const struct acpi_device_id mip4_acpi_match[] = { 15796ccb1d8fSSangwon Jee { "MLFS0000", 0}, 15806ccb1d8fSSangwon Jee { }, 15816ccb1d8fSSangwon Jee }; 15826ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(acpi, mip4_acpi_match); 15836ccb1d8fSSangwon Jee #endif 15846ccb1d8fSSangwon Jee 15856ccb1d8fSSangwon Jee static const struct i2c_device_id mip4_i2c_ids[] = { 15866ccb1d8fSSangwon Jee { MIP4_DEVICE_NAME, 0 }, 15876ccb1d8fSSangwon Jee { }, 15886ccb1d8fSSangwon Jee }; 15896ccb1d8fSSangwon Jee MODULE_DEVICE_TABLE(i2c, mip4_i2c_ids); 15906ccb1d8fSSangwon Jee 15916ccb1d8fSSangwon Jee static struct i2c_driver mip4_driver = { 15926ccb1d8fSSangwon Jee .id_table = mip4_i2c_ids, 15935a2b1cf3SUwe Kleine-König .probe_new = mip4_probe, 15946ccb1d8fSSangwon Jee .driver = { 15956ccb1d8fSSangwon Jee .name = MIP4_DEVICE_NAME, 15966ccb1d8fSSangwon Jee .of_match_table = of_match_ptr(mip4_of_match), 15976ccb1d8fSSangwon Jee .acpi_match_table = ACPI_PTR(mip4_acpi_match), 1598*e6a80bceSJonathan Cameron .pm = pm_sleep_ptr(&mip4_pm_ops), 15996ccb1d8fSSangwon Jee }, 16006ccb1d8fSSangwon Jee }; 16016ccb1d8fSSangwon Jee module_i2c_driver(mip4_driver); 16026ccb1d8fSSangwon Jee 16036ccb1d8fSSangwon Jee MODULE_DESCRIPTION("MELFAS MIP4 Touchscreen"); 16046ccb1d8fSSangwon Jee MODULE_AUTHOR("Sangwon Jee <jeesw@melfas.com>"); 16056ccb1d8fSSangwon Jee MODULE_LICENSE("GPL"); 1606