@@ -1334,4 +1334,16 @@ config TOUCHSCREEN_ZINITIX
To compile this driver as a module, choose M here: the
module will be called zinitix.
+config TOUCHSCREEN_ILITEK
+ tristate "Ilitek I2C 23XX/25XX/Lego Series Touch ICs"
+ depends on I2C
+ help
+ Say Y here if you have touchscreen with ILITEK touch IC,
+ it supports 23XX/25XX/other Lego series.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ilitek_ts_i2c.
+
endif
@@ -112,3 +112,4 @@ obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023) += rohm_bu21023.o
obj-$(CONFIG_TOUCHSCREEN_RASPBERRYPI_FW) += raspberrypi-ts.o
obj-$(CONFIG_TOUCHSCREEN_IQS5XX) += iqs5xx.o
obj-$(CONFIG_TOUCHSCREEN_ZINITIX) += zinitix.o
+obj-$(CONFIG_TOUCHSCREEN_ILITEK) += ilitek_ts_i2c.o
new file mode 100644
@@ -0,0 +1,1027 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ILITEK Touch IC driver for 23XX, 25XX and Lego series
+ *
+ * Copyright (C) 2011 ILI Technology Corporation.
+ * Copyright (C) 2020 Luca Hsu <luca_hsu@ilitek.com>
+ * Copyright (C) 2021 Joe Hung <joe_hung@ilitek.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/cdev.h>
+#include <linux/uaccess.h>
+#include <linux/version.h>
+#include <linux/rtc.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/proc_fs.h>
+#include <linux/fs.h>
+#include <linux/pm_runtime.h>
+#include <linux/ctype.h>
+#include <linux/errno.h>
+#include <linux/acpi.h>
+
+#define ILITEK_TS_NAME "ilitek_ts"
+#define BL_V1_8 (0x10800)
+#define BL_V1_7 (0x10700)
+#define BL_V1_6 (0x10600)
+
+#define ILITEK_TP_CMD_GET_TP_RES (0x20)
+#define ILITEK_TP_CMD_GET_SCRN_RES (0x21)
+#define ILITEK_TP_CMD_GET_KEY_INFO (0x22)
+#define ILITEK_TP_CMD_GET_FW_VER (0x40)
+#define ILITEK_TP_CMD_GET_PRL_VER (0x42)
+#define ILITEK_TP_CMD_GET_MCU_VER (0x61)
+#define ILITEK_TP_CMD_GET_IC_MODE (0xC0)
+
+#define REPORT_ADDRESS_COUNT (61)
+#define ILITEK_SUPPORT_MAX_POINT (40)
+#define ILITEK_SUPPORT_MAX_KEY_CNT (50)
+
+#define CEIL(n, d) (((n) % (d)) ? ((n) / (d) + 1) : ((n) / (d)))
+
+struct ilitek_protocol_info {
+ s32 ver;
+ u8 ver_major;
+ u8 ver_mid;
+ u8 ver_minor;
+};
+
+struct ilitek_key_info {
+ s32 id;
+ s32 x;
+ s32 y;
+ s32 status;
+};
+
+struct ilitek_touch_info {
+ u16 id;
+ u16 x;
+ u16 y;
+ u16 p;
+ u16 w;
+ u16 h;
+ u16 status;
+};
+
+struct ilitek_ts_data {
+ struct i2c_client *client;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *irq_gpio;
+ struct input_dev *input_dev;
+
+ struct mutex ilitek_mutex;
+ spinlock_t irq_lock;
+ bool irq_status;
+ int (*process_and_report)(struct ilitek_ts_data *ilitek_data);
+
+ struct PROTOCOL_MAP *ptl_cb_func;
+ struct ilitek_protocol_info ptl;
+
+
+ struct ilitek_key_info keyinfo[ILITEK_SUPPORT_MAX_KEY_CNT];
+ struct ilitek_touch_info tpinfo[ILITEK_SUPPORT_MAX_POINT];
+
+ bool is_touched;
+ bool touch_key_hold_press;
+
+ bool ilitek_repeat_start;
+
+ char product_id[30];
+ u8 mcu_ver[2];
+ u8 ic_mode;
+ u8 firmware_ver[8];
+
+ s32 reset_time;
+ s32 tp_max_x;
+ s32 tp_max_y;
+ s32 screen_max_x;
+ s32 screen_max_y;
+ s32 screen_min_x;
+ s32 screen_min_y;
+ s32 max_tp;
+ s32 x_ch;
+ s32 y_ch;
+ s32 slave_count;
+ s32 format;
+ s32 keycount;
+ s32 key_xlen;
+ s32 key_ylen;
+};
+
+enum ilitek_cmds_v6 {
+ GET_PTL_VER = 0,
+ GET_FW_VER,
+ GET_SCRN_RES,
+ GET_TP_RES,
+ GET_IC_MODE,
+ GET_MCU_VER,
+ GET_KEY_INFO,
+
+ MAX_CMD_CNT /* ALWAYS keep at the end */
+};
+
+typedef int protocol_func(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, uint8_t *inbuf, uint8_t *outbuf);
+
+struct PROTOCOL_MAP {
+ u16 cmd;
+ const char *name;
+ protocol_func *func;
+};
+
+/* ILITEK I2C R/W APIs */
+static int ilitek_i2c_transfer(struct i2c_client *client,
+ struct i2c_msg *msgs, int cnt)
+{
+ int ret = 0, retry = 4;
+
+ while (retry--) {
+ ret = i2c_transfer(client->adapter, msgs, cnt);
+ if (ret >= 0)
+ break;
+ mdelay(20);
+ }
+
+ return ret;
+}
+
+static int ilitek_i2c_write_and_read(struct ilitek_ts_data *ilitek_data,
+ u8 *cmd, int write_len, int delay,
+ u8 *data, int read_len)
+{
+ int ret = 0;
+ struct i2c_client *client = ilitek_data->client;
+ struct i2c_msg msgs[2] = {
+ {.addr = client->addr, .flags = 0,
+ .len = write_len, .buf = cmd,},
+ {.addr = client->addr, .flags = I2C_M_RD,
+ .len = read_len, .buf = data,}
+ };
+
+ if (ilitek_data->ilitek_repeat_start && delay == 0 &&
+ write_len > 0 && read_len > 0) {
+ ret = ilitek_i2c_transfer(client, msgs, 2);
+ if (ret < 0)
+ return ret;
+ } else {
+ if (write_len > 0) {
+ ret = ilitek_i2c_transfer(client, msgs, 1);
+ if (ret < 0)
+ return ret;
+ }
+ if (delay > 0)
+ mdelay(delay);
+ if (read_len > 0) {
+ ret = ilitek_i2c_transfer(client, msgs + 1, 1);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static void ilitek_irq_enable(struct ilitek_ts_data *ilitek_data)
+{
+ unsigned long irqflag = 0;
+
+ spin_lock_irqsave(&ilitek_data->irq_lock, irqflag);
+ if (!ilitek_data->irq_status) {
+ enable_irq(ilitek_data->client->irq);
+ ilitek_data->irq_status = true;
+ }
+ spin_unlock_irqrestore(&ilitek_data->irq_lock, irqflag);
+}
+
+static void ilitek_irq_disable(struct ilitek_ts_data *ilitek_data)
+{
+ unsigned long irqflag = 0;
+
+ spin_lock_irqsave(&ilitek_data->irq_lock, irqflag);
+ if (ilitek_data->irq_status) {
+ disable_irq_nosync(ilitek_data->client->irq);
+ ilitek_data->irq_status = false;
+ }
+ spin_unlock_irqrestore(&ilitek_data->irq_lock, irqflag);
+}
+
+/* ILITEK ISR APIs */
+static void ilitek_key_down(struct ilitek_ts_data *ilitek_data,
+ int x, int y)
+{
+ int j = 0;
+ int x_min;
+ int x_max;
+ int y_min;
+ int y_max;
+
+ for (j = 0; j < ilitek_data->keycount; j++) {
+ x_min = ilitek_data->keyinfo[j].x;
+ x_max = ilitek_data->keyinfo[j].x + ilitek_data->key_xlen;
+ y_min = ilitek_data->keyinfo[j].y;
+ y_max = ilitek_data->keyinfo[j].y + ilitek_data->key_ylen;
+
+ if (x >= x_min && x <= x_max && y >= y_min && y <= y_max) {
+ input_report_key(ilitek_data->input_dev,
+ ilitek_data->keyinfo[j].id, 1);
+
+ ilitek_data->keyinfo[j].status = 1;
+ ilitek_data->touch_key_hold_press = true;
+ ilitek_data->is_touched = true;
+ break;
+ }
+ }
+}
+
+static int ilitek_key_release(struct ilitek_ts_data *ilitek_data,
+ int x, int y, bool check_point)
+{
+ int j = 0;
+ int x_min;
+ int x_max;
+ int y_min;
+ int y_max;
+
+ for (j = 0; j < ilitek_data->keycount; j++) {
+ x_min = ilitek_data->keyinfo[j].x;
+ x_max = ilitek_data->keyinfo[j].x + ilitek_data->key_xlen;
+ y_min = ilitek_data->keyinfo[j].y;
+ y_max = ilitek_data->keyinfo[j].y + ilitek_data->key_ylen;
+
+ if (ilitek_data->keyinfo[j].status == 1) {
+ if (!check_point ||
+ (x < x_min || x > x_max ||
+ y < y_min || y > y_max)) {
+ input_report_key(ilitek_data->input_dev,
+ ilitek_data->keyinfo[j].id, 0);
+ ilitek_data->keyinfo[j].status = 0;
+ ilitek_data->touch_key_hold_press = false;
+ }
+ }
+ }
+ return 0;
+}
+
+static void ilitek_touch_down(struct ilitek_ts_data *ilitek_data,
+ int id, int x, int y, int p, int h, int w)
+{
+ struct input_dev *input = ilitek_data->input_dev;
+
+ input_report_key(input, BTN_TOUCH, 1);
+
+ input_mt_slot(input, id);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
+
+ input_event(input, EV_ABS, ABS_MT_POSITION_X, x);
+ input_event(input, EV_ABS, ABS_MT_POSITION_Y, y);
+
+ input_event(input, EV_ABS, ABS_MT_TOUCH_MAJOR, h);
+ input_event(input, EV_ABS, ABS_MT_WIDTH_MAJOR, w);
+
+ ilitek_data->tpinfo[id].status = 1;
+ ilitek_data->tpinfo[id].id = id;
+ ilitek_data->tpinfo[id].x = x;
+ ilitek_data->tpinfo[id].y = y;
+ ilitek_data->tpinfo[id].p = p;
+ ilitek_data->tpinfo[id].h = h;
+ ilitek_data->tpinfo[id].w = w;
+ ilitek_data->is_touched = true;
+}
+
+static void ilitek_touch_release(struct ilitek_ts_data *ilitek_data, int id)
+{
+ struct input_dev *input = ilitek_data->input_dev;
+
+ if (ilitek_data->tpinfo[id].status == 1) {
+ input_mt_slot(input, id);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
+ ilitek_data->tpinfo[id].status = 0;
+ }
+}
+
+static void ilitek_touch_release_all(struct ilitek_ts_data *ilitek_data)
+{
+ struct input_dev *input = ilitek_data->input_dev;
+ int i = 0;
+
+ for (i = 0; i < ilitek_data->max_tp; i++)
+ ilitek_touch_release(ilitek_data, i);
+ input_report_key(input, BTN_TOUCH, 0);
+ input_sync(input);
+
+ ilitek_data->is_touched = false;
+}
+
+static int ilitek_process_and_report_v6(struct ilitek_ts_data *ilitek_data)
+{
+ int ret = 0;
+ u8 buf[512] = {0};
+ int packet_len = 5;
+ int packet_max_point = 10;
+ int report_max_point = 6;
+ int release_point = 0;
+ int i = 0, count = 0;
+ struct input_dev *input = ilitek_data->input_dev;
+ struct device *dev = &ilitek_data->client->dev;
+ u16 x, y, p = 10, w = 10, h = 10, status, id;
+
+ ret = ilitek_i2c_write_and_read(ilitek_data, NULL, 0, 0, buf, 64);
+ if (ret < 0) {
+ dev_err(dev, "get touch info failed, err:%d\n", ret);
+ goto err_release_touch_and_key;
+ }
+
+ report_max_point = buf[REPORT_ADDRESS_COUNT];
+ if (report_max_point > ilitek_data->max_tp) {
+ dev_err(dev, "FW report max point:%d > panel info. max:%d\n",
+ report_max_point, ilitek_data->max_tp);
+ return -EINVAL;
+ }
+
+ count = CEIL(report_max_point, packet_max_point);
+ for (i = 1; i < count; i++) {
+ ret = ilitek_i2c_write_and_read(ilitek_data, NULL, 0, 0,
+ buf + i * 64, 64);
+ if (ret < 0) {
+ dev_err(dev, "get touch info. err, count=%d\n", count);
+ goto err_release_touch_and_key;
+ }
+ }
+
+ for (i = 0; i < report_max_point; i++) {
+ status = buf[i * packet_len + 1] & 0x40;
+ id = buf[i * packet_len + 1] & 0x3F;
+
+ if (!status) {
+ release_point++;
+ ilitek_touch_release(ilitek_data, id);
+ continue;
+ }
+
+ x = (buf[i * packet_len + 3] << 8) + buf[i * packet_len + 2];
+ y = (buf[i * packet_len + 5] << 8) + buf[i * packet_len + 4];
+
+ if (!ilitek_data->is_touched)
+ ilitek_key_down(ilitek_data, x, y);
+
+ if (!ilitek_data->touch_key_hold_press) {
+ if (x > ilitek_data->screen_max_x ||
+ y > ilitek_data->screen_max_y ||
+ x < ilitek_data->screen_min_x ||
+ y < ilitek_data->screen_min_y)
+ continue;
+
+ ilitek_touch_down(ilitek_data, id, x, y, p, h, w);
+ } else {
+ ilitek_key_release(ilitek_data, x, y, 1);
+ }
+ }
+
+ if (release_point == report_max_point) {
+ ilitek_touch_release_all(ilitek_data);
+ ilitek_key_release(ilitek_data, 0, 0, 0);
+ ilitek_data->is_touched = false;
+ }
+ input_sync(input);
+ return 0;
+
+err_release_touch_and_key:
+ ilitek_touch_release_all(ilitek_data);
+ ilitek_key_release(ilitek_data, 0, 0, 0);
+ ilitek_data->is_touched = false;
+ input_sync(input);
+ return ret;
+}
+
+
+/* APIs of cmds for ILITEK Touch IC */
+static int api_protocol_set_cmd(struct ilitek_ts_data *ilitek_data,
+ u16 idx, u8 *inbuf, u8 *outbuf)
+{
+ u16 cmd;
+ int ret = 0;
+
+ if (!ilitek_data || !ilitek_data->ptl_cb_func)
+ return -EINVAL;
+
+ if (idx >= MAX_CMD_CNT)
+ return -EINVAL;
+
+ cmd = ilitek_data->ptl_cb_func[idx].cmd;
+ ret = ilitek_data->ptl_cb_func[idx].func(ilitek_data, cmd,
+ inbuf, outbuf);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int api_protocol_get_ptl_ver(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = cmd;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 3);
+ if (ret < 0)
+ return ret;
+
+ ilitek_data->ptl.ver = (outbuf[0] << 16) + (outbuf[1] << 8);
+ ilitek_data->ptl.ver_major = outbuf[0];
+ ilitek_data->ptl.ver_mid = outbuf[1];
+ ilitek_data->ptl.ver_minor = outbuf[2];
+
+ return ret;
+}
+
+static int api_protocol_get_mcu_ver(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_MCU_VER;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 32);
+ if (ret < 0)
+ return ret;
+
+ memcpy(ilitek_data->mcu_ver, outbuf, 2);
+ memset(ilitek_data->product_id, 0, sizeof(ilitek_data->product_id));
+ memcpy(ilitek_data->product_id, outbuf+6, 26);
+
+ return ret;
+}
+
+static int api_protocol_get_fw_ver(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_FW_VER;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 8);
+ if (ret < 0)
+ return ret;
+
+ memcpy(ilitek_data->firmware_ver, outbuf, 8);
+
+ return ret;
+}
+
+static int api_protocol_get_scrn_res(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_SCRN_RES;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 8);
+ if (ret < 0)
+ return ret;
+
+ ilitek_data->screen_min_x = (outbuf[1] << 8) + outbuf[0];
+ ilitek_data->screen_min_y = (outbuf[3] << 8) + outbuf[2];
+ ilitek_data->screen_max_x = (outbuf[5] << 8) + outbuf[4];
+ ilitek_data->screen_max_y = (outbuf[7] << 8) + outbuf[6];
+
+ return ret;
+}
+
+static int api_protocol_get_key_info_v6(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0, i = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ if (ilitek_data->keycount > ILITEK_SUPPORT_MAX_KEY_CNT)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_KEY_INFO;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 10,
+ outbuf, ilitek_data->keycount * 5 + 5);
+ if (ret < 0)
+ return ret;
+
+ ilitek_data->key_xlen = (outbuf[2] << 8) + outbuf[1];
+ ilitek_data->key_ylen = (outbuf[4] << 8) + outbuf[3];
+
+ for (i = 0; i < ilitek_data->keycount; i++) {
+ ilitek_data->keyinfo[i].id = outbuf[i * 5 + 5];
+ ilitek_data->keyinfo[i].x = (outbuf[i * 5 + 7] << 8) +
+ outbuf[i * 5 + 6];
+ ilitek_data->keyinfo[i].y = (outbuf[i * 5 + 9] << 8) +
+ outbuf[i * 5 + 8];
+ ilitek_data->keyinfo[i].status = 0;
+ }
+
+ return ret;
+}
+
+static int api_protocol_get_tp_res_v6(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_TP_RES;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 15);
+ if (ret < 0)
+ return ret;
+
+ ilitek_data->tp_max_x = (outbuf[1] << 8) + outbuf[0];
+ ilitek_data->tp_max_y = (outbuf[3] << 8) + outbuf[2];
+ ilitek_data->x_ch = (outbuf[5] << 8) + outbuf[4];
+ ilitek_data->y_ch = (outbuf[7] << 8) + outbuf[6];
+ ilitek_data->max_tp = outbuf[8];
+ ilitek_data->keycount = outbuf[9];
+ ilitek_data->slave_count = outbuf[10];
+ ilitek_data->format = outbuf[12];
+
+ if (ilitek_data->keycount > ILITEK_SUPPORT_MAX_KEY_CNT) {
+ dev_err(&ilitek_data->client->dev, "Invalid KEY count:%d from FW\n",
+ ilitek_data->keycount);
+ return -EINVAL;
+ }
+
+ if (ilitek_data->keycount > 0) {
+ ret = api_protocol_set_cmd(ilitek_data, GET_KEY_INFO,
+ NULL, outbuf);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (ilitek_data->max_tp > ILITEK_SUPPORT_MAX_POINT) {
+ dev_err(&ilitek_data->client->dev, "Invalid MAX_TP:%d from FW\n",
+ ilitek_data->max_tp);
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int api_protocol_get_ic_mode(struct ilitek_ts_data *ilitek_data,
+ u16 cmd, u8 *inbuf, u8 *outbuf)
+{
+ int ret = 0;
+ u8 buf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ buf[0] = ILITEK_TP_CMD_GET_IC_MODE;
+ ret = ilitek_i2c_write_and_read(ilitek_data, buf, 1, 5, outbuf, 2);
+ if (ret < 0)
+ return ret;
+
+ ilitek_data->ic_mode = outbuf[0];
+ return ret;
+}
+
+struct PROTOCOL_MAP ptl_func_map_v3[] = {
+ { /* V3 cmds */},
+};
+
+struct PROTOCOL_MAP ptl_func_map_v6[] = {
+ [GET_PTL_VER] = {ILITEK_TP_CMD_GET_PRL_VER, "GET_PTL_VER",
+ api_protocol_get_ptl_ver},
+ [GET_FW_VER] = {ILITEK_TP_CMD_GET_FW_VER, "GET_FW_VER",
+ api_protocol_get_fw_ver},
+ [GET_SCRN_RES] = {ILITEK_TP_CMD_GET_SCRN_RES, "GET_SCRN_RES",
+ api_protocol_get_scrn_res},
+ [GET_TP_RES] = {ILITEK_TP_CMD_GET_TP_RES, "GET_TP_RES",
+ api_protocol_get_tp_res_v6},
+ [GET_IC_MODE] = {ILITEK_TP_CMD_GET_IC_MODE, "GET_IC_MODE",
+ api_protocol_get_ic_mode},
+ [GET_MCU_VER] = {ILITEK_TP_CMD_GET_MCU_VER, "GET_MOD_NAME",
+ api_protocol_get_mcu_ver},
+ [GET_KEY_INFO] = {ILITEK_TP_CMD_GET_KEY_INFO, "GET_KEY_INFO",
+ api_protocol_get_key_info_v6},
+};
+
+/* Probe APIs */
+static int ilitek_request_gpio(struct device *dev,
+ struct ilitek_ts_data *ilitek_data)
+{
+ int ret = 0;
+
+ if (!dev || !ilitek_data)
+ return -EINVAL;
+
+ ilitek_data->reset_gpio = gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ilitek_data->reset_gpio)) {
+ ret = PTR_ERR(ilitek_data->reset_gpio);
+ return ret;
+ }
+
+ ilitek_data->irq_gpio = gpiod_get(dev, "irq", GPIOD_IN);
+ if (IS_ERR(ilitek_data->irq_gpio)) {
+ ret = PTR_ERR(ilitek_data->irq_gpio);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ilitek_reset(struct ilitek_ts_data *ilitek_data,
+ int delay, bool boot)
+{
+ bool init_stats = ilitek_data->irq_status;
+
+ if (!boot)
+ ilitek_irq_disable(ilitek_data);
+
+ if (ilitek_data->reset_gpio) {
+ gpiod_set_value(ilitek_data->reset_gpio, 1);
+ mdelay(10);
+
+ gpiod_set_value(ilitek_data->reset_gpio, 0);
+ mdelay(10);
+
+ gpiod_set_value(ilitek_data->reset_gpio, 1);
+ mdelay(delay);
+ }
+
+ if (!boot && init_stats)
+ ilitek_irq_enable(ilitek_data);
+}
+
+static int ilitek_protocol_init(struct ilitek_ts_data *ilitek_data)
+{
+ int ret = 0;
+ u8 outbuf[64] = {0};
+
+ if (!ilitek_data)
+ return -EINVAL;
+
+ ilitek_data->ptl_cb_func = ptl_func_map_v6;
+
+ ret = api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf);
+ if (ret < 0)
+ return ret;
+
+ if (ilitek_data->ptl.ver_major == 0x3 ||
+ ilitek_data->ptl.ver == BL_V1_6 ||
+ ilitek_data->ptl.ver == BL_V1_7) {
+ ilitek_data->process_and_report = NULL;
+ ilitek_data->ptl_cb_func = NULL;
+ ilitek_data->reset_time = 200;
+ } else {
+ ilitek_data->process_and_report = ilitek_process_and_report_v6;
+ ilitek_data->ptl_cb_func = ptl_func_map_v6;
+ ilitek_data->reset_time = 600;
+ }
+
+ return 0;
+}
+
+static int ilitek_read_tp_info(struct ilitek_ts_data *ilitek_data, bool boot)
+{
+ u8 outbuf[256] = {0};
+
+ if (api_protocol_set_cmd(ilitek_data, GET_PTL_VER, NULL, outbuf) < 0)
+ return -EFAULT;
+ if (api_protocol_set_cmd(ilitek_data, GET_MCU_VER, NULL, outbuf) < 0)
+ return -EFAULT;
+ if (api_protocol_set_cmd(ilitek_data, GET_FW_VER, NULL, outbuf) < 0)
+ return -EFAULT;
+ if (boot && api_protocol_set_cmd(ilitek_data, GET_SCRN_RES, NULL,
+ outbuf) < 0)
+ return -EFAULT;
+ if (api_protocol_set_cmd(ilitek_data, GET_TP_RES, NULL, outbuf) < 0)
+ return -EFAULT;
+ if (api_protocol_set_cmd(ilitek_data, GET_IC_MODE, NULL, outbuf) < 0)
+ return -EFAULT;
+
+ return 0;
+}
+
+static int ilitek_input_dev_init(struct device *dev,
+ struct ilitek_ts_data *ilitek_data)
+{
+ int ret = 0, i = 0;
+ struct input_dev *input = NULL;
+
+ if (!dev || !ilitek_data)
+ return -EINVAL;
+
+ input = input_allocate_device();
+ if (!input)
+ return -ENOMEM;
+
+ input->name = ILITEK_TS_NAME;
+ input->id.bustype = BUS_I2C;
+
+ __set_bit(INPUT_PROP_DIRECT, input->propbit);
+ input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ input_set_abs_params(input, ABS_MT_POSITION_X,
+ ilitek_data->screen_min_x,
+ ilitek_data->screen_max_x, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y,
+ ilitek_data->screen_min_y,
+ ilitek_data->screen_max_y, 0, 0);
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+ input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
+
+ input_mt_init_slots(input, ilitek_data->max_tp, INPUT_MT_DIRECT);
+
+ for (i = 0; i < ilitek_data->keycount; i++)
+ set_bit(ilitek_data->keyinfo[i].id & KEY_MAX, input->keybit);
+
+ ret = input_register_device(input);
+ if (ret)
+ dev_err(dev, "failed to register input device, err:%d\n", ret);
+
+ ilitek_data->input_dev = input;
+ return ret;
+}
+
+static irqreturn_t ilitek_i2c_isr(int irq, void *dev_id)
+{
+ struct ilitek_ts_data *ilitek_data = dev_id;
+ int ret = 0;
+
+ if (!ilitek_data->process_and_report) {
+ dev_err(&ilitek_data->client->dev, "report touch cb is NULL\n");
+ return IRQ_NONE;
+ }
+
+ ilitek_irq_disable(ilitek_data);
+ mutex_lock(&ilitek_data->ilitek_mutex);
+ ret = ilitek_data->process_and_report(ilitek_data);
+ mutex_unlock(&ilitek_data->ilitek_mutex);
+ ilitek_irq_enable(ilitek_data);
+
+ if (ret < 0) {
+ dev_err(&ilitek_data->client->dev, "process and report point failed, err:%d\n",
+ ret);
+ return IRQ_NONE;
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int ilitek_request_irq(struct device *dev,
+ struct ilitek_ts_data *ilitek_data)
+{
+ int ret = 0;
+
+ spin_lock_init(&ilitek_data->irq_lock);
+ ilitek_data->irq_status = true;
+
+ if (!ilitek_data->irq_gpio)
+ return -EINVAL;
+
+ ilitek_data->client->irq = gpiod_to_irq(ilitek_data->irq_gpio);
+ ret = request_threaded_irq(ilitek_data->client->irq, NULL,
+ ilitek_i2c_isr,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ "ilitek_touch_irq", ilitek_data);
+ if (ret)
+ dev_err(dev, "request threaded irq failed, err:%d\n", ret);
+
+ return ret;
+}
+
+static ssize_t firmware_version_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client);
+ int ret = 0;
+ u8 outbuf[64] = {0};
+
+ ilitek_irq_disable(ilitek_data);
+ mutex_lock(&ilitek_data->ilitek_mutex);
+ ret = api_protocol_set_cmd(ilitek_data, GET_FW_VER, NULL, outbuf);
+ mutex_unlock(&ilitek_data->ilitek_mutex);
+ ilitek_irq_enable(ilitek_data);
+
+ if (ret < 0) {
+ dev_err(dev, "api set cmd failed, err:%d\n", ret);
+ return ret;
+ }
+
+ return scnprintf(buf, PAGE_SIZE,
+ "ILITEK FW ver: %d.%d.%d.%d.%d.%d.%d.%d\n",
+ ilitek_data->firmware_ver[0],
+ ilitek_data->firmware_ver[1],
+ ilitek_data->firmware_ver[2],
+ ilitek_data->firmware_ver[3],
+ ilitek_data->firmware_ver[4],
+ ilitek_data->firmware_ver[5],
+ ilitek_data->firmware_ver[6],
+ ilitek_data->firmware_ver[7]);
+}
+static DEVICE_ATTR_RO(firmware_version);
+
+static ssize_t product_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client);
+ int ret = 0;
+ u8 outbuf[64] = {0};
+
+ ilitek_irq_disable(ilitek_data);
+ mutex_lock(&ilitek_data->ilitek_mutex);
+ ret = api_protocol_set_cmd(ilitek_data, GET_MCU_VER, NULL, outbuf);
+ mutex_unlock(&ilitek_data->ilitek_mutex);
+ ilitek_irq_enable(ilitek_data);
+
+ if (ret < 0) {
+ dev_err(dev, "api set cmd failed, err:%d\n", ret);
+ return ret;
+ }
+
+ return scnprintf(buf, PAGE_SIZE, "MCU: %s\n", ilitek_data->product_id);
+}
+static DEVICE_ATTR_RO(product_id);
+
+static struct attribute *ilitek_sysfs_attrs[] = {
+ &dev_attr_firmware_version.attr,
+ &dev_attr_product_id.attr,
+ NULL
+};
+
+static struct attribute_group ilitek_attrs_group[] = {
+ {.attrs = ilitek_sysfs_attrs},
+};
+
+static int ilitek_create_sysfsnode(struct device *dev)
+{
+ int ret = 0;
+
+ ret = sysfs_create_group(&dev->kobj, ilitek_attrs_group);
+ if (ret)
+ dev_err(dev, "sysfs create group failed, err:%d\n", ret);
+
+ return ret;
+}
+
+static int ilitek_ts_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct ilitek_ts_data *ilitek_data = NULL;
+ struct device *dev = &client->dev;
+ int ret = 0;
+
+ ilitek_data = kzalloc(sizeof(*ilitek_data), GFP_KERNEL);
+ if (!ilitek_data)
+ return -ENOMEM;
+
+ ilitek_data->client = client;
+ i2c_set_clientdata(client, ilitek_data);
+
+ mutex_init(&ilitek_data->ilitek_mutex);
+
+ ret = ilitek_request_gpio(dev, ilitek_data);
+ if (ret < 0) {
+ dev_err(dev, "request gpio failed, err:%d", ret);
+ goto err_put_gpiod;
+ }
+
+ ilitek_reset(ilitek_data, 1000, true);
+ ret = ilitek_protocol_init(ilitek_data);
+ if (ret < 0) {
+ dev_err(dev, "protocol init failed, err:%d", ret);
+ goto err_put_gpiod;
+ }
+
+ ret = ilitek_read_tp_info(ilitek_data, true);
+ if (ret < 0) {
+ dev_err(dev, "read tp info failed, err:%d", ret);
+ goto err_put_gpiod;
+ }
+
+ ret = ilitek_input_dev_init(dev, ilitek_data);
+ if (ret < 0) {
+ dev_err(dev, "input dev init failed, err:%d", ret);
+ goto err_free_input_dev;
+ }
+
+ ret = ilitek_request_irq(dev, ilitek_data);
+ if (ret < 0) {
+ dev_err(dev, "request irq failed, err:%d", ret);
+ goto err_free_input_dev;
+ }
+
+ ret = ilitek_create_sysfsnode(dev);
+ if (ret < 0) {
+ dev_err(dev, "create sysfs node failed, err:%d", ret);
+ goto err_free_irq;
+ }
+
+ dev_info(dev, "ilitek probe success!\n");
+
+ return 0;
+
+err_free_irq:
+ free_irq(ilitek_data->client->irq, ilitek_data);
+
+ input_unregister_device(ilitek_data->input_dev);
+err_free_input_dev:
+ if (ilitek_data->input_dev)
+ input_free_device(ilitek_data->input_dev);
+err_put_gpiod:
+ if (!IS_ERR(ilitek_data->reset_gpio))
+ gpiod_put(ilitek_data->reset_gpio);
+ if (!IS_ERR(ilitek_data->irq_gpio))
+ gpiod_put(ilitek_data->irq_gpio);
+ kfree(ilitek_data);
+ return ret;
+}
+
+static int ilitek_ts_i2c_remove(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct ilitek_ts_data *ilitek_data = i2c_get_clientdata(client);
+
+ sysfs_remove_group(&dev->kobj, ilitek_attrs_group);
+
+ free_irq(ilitek_data->client->irq, ilitek_data);
+
+ input_unregister_device(ilitek_data->input_dev);
+
+ if (!IS_ERR(ilitek_data->reset_gpio))
+ gpiod_put(ilitek_data->reset_gpio);
+ if (!IS_ERR(ilitek_data->irq_gpio))
+ gpiod_put(ilitek_data->irq_gpio);
+
+ kfree(ilitek_data);
+ dev_info(dev, "ilitek remove success!\n");
+ return 0;
+}
+
+static const struct i2c_device_id ilitek_ts_i2c_id[] = {
+ {ILITEK_TS_NAME, 0},
+ { /* not omitted */ },
+};
+MODULE_DEVICE_TABLE(i2c, ilitek_ts_i2c_id);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id ilitekts_acpi_id[] = {
+ { "ILTK0001", 0 },
+ { /* not omitted */ },
+};
+MODULE_DEVICE_TABLE(acpi, ilitekts_acpi_id);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id ilitek_ts_i2c_match[] = {
+ {.compatible = "ilitek,ili2520",},
+ {.compatible = "ilitek,ili2510",},
+ { /* not omitted */ },
+};
+MODULE_DEVICE_TABLE(of, ilitek_ts_i2c_match);
+#endif
+
+static struct i2c_driver ilitek_ts_i2c_driver = {
+ .driver = {
+ .name = ILITEK_TS_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(ilitek_ts_i2c_match),
+ .acpi_match_table = ACPI_PTR(ilitekts_acpi_id),
+ },
+ .probe = ilitek_ts_i2c_probe,
+ .remove = ilitek_ts_i2c_remove,
+ .id_table = ilitek_ts_i2c_id,
+};
+
+module_i2c_driver(ilitek_ts_i2c_driver);
+
+MODULE_AUTHOR("ILITEK");
+MODULE_DESCRIPTION("ILITEK I2C Touchscreen Driver");
+MODULE_LICENSE("GPL");