Initial file dump from open source releaseHEADmaster

1 files changed, 1349 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/ist30xxa/ist30xx_update.c b/drivers/input/touchscreen/ist30xxa/ist30xx_update.c
new file mode 100644
index 00000000..ec36fb3a
--- /dev/null
+++ b/drivers/input/touchscreen/ist30xxa/ist30xx_update.c
@@ -0,0 +1,1349 @@
+/*
+ *  Copyright (C) 2010,Imagis Technology Co. Ltd. All Rights Reserved.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ */
+
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/slab.h>
+#include <linux/firmware.h>
+#include <linux/stat.h>
+#include <asm/unaligned.h>
+#include <linux/uaccess.h>
+#include <linux/fcntl.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/err.h>
+
+#include "ist30xx.h"
+#include "ist30xx_update.h"
+#include "ist30xx_tracking.h"
+
+#if IST30XX_DEBUG
+#include "ist30xx_misc.h"
+#endif
+
+#if IST30XX_INTERNAL_BIN
+#include "./firmware/core_prime.h"
+#if IST30XX_MULTIPLE_TSP
+//#include "./firmware/core_prime.h"
+#endif
+#endif  // IST30XX_INTERNAL_BIN
+
+struct ist30xx_tags *ts_tags;
+
+u32 ist30xx_fw_ver = 0;
+u32 ist30xx_param_ver = 0;
+u32 ist30xx_sub_ver = 0;
+
+extern struct ist30xx_data *ts_data;
+
+extern void ist30xx_disable_irq(struct ist30xx_data *data);
+extern void ist30xx_enable_irq(struct ist30xx_data *data);
+
+int ist30xx_i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+			 int msg_num, u8 *cmd_buf)
+{
+	int ret = 0;
+	int idx = msg_num - 1;
+	int size = msgs[idx].len;
+	u8 *msg_buf = NULL;
+	u8 *pbuf = NULL;
+	int trans_size, max_size = 0;
+
+	if (msg_num == WRITE_CMD_MSG_LEN)
+		max_size = I2C_MAX_WRITE_SIZE;
+	else if (msg_num == READ_CMD_MSG_LEN)
+		max_size = I2C_MAX_READ_SIZE;
+
+	if (unlikely(max_size == 0)) {
+		tsp_err("%s() : transaction size(%d)\n", __func__, max_size);
+		return -EINVAL;
+	}
+
+	if (msg_num == WRITE_CMD_MSG_LEN) {
+		msg_buf = kmalloc(max_size + IST30XX_ADDR_LEN, GFP_KERNEL);
+		if (!msg_buf)
+			return -ENOMEM;
+		memcpy(msg_buf, cmd_buf, IST30XX_ADDR_LEN);
+		pbuf = msgs[idx].buf;
+	}
+
+	while (size > 0) {
+		trans_size = (size >= max_size ? max_size : size);
+
+		msgs[idx].len = trans_size;
+		if (msg_num == WRITE_CMD_MSG_LEN) {
+			memcpy(&msg_buf[IST30XX_ADDR_LEN], pbuf, trans_size);
+			msgs[idx].buf = msg_buf;
+			msgs[idx].len += IST30XX_ADDR_LEN;
+		}
+		ret = i2c_transfer(adap, msgs, msg_num);
+		if (unlikely(ret != msg_num)) {
+			tsp_err("%s() : i2c_transfer failed(%d), num=%d\n",
+				__func__, ret, msg_num);
+			break;
+		}
+
+		if (msg_num == WRITE_CMD_MSG_LEN)
+			pbuf += trans_size;
+		else
+			msgs[idx].buf += trans_size;
+
+		size -= trans_size;
+	}
+
+	if (msg_num == WRITE_CMD_MSG_LEN)
+		kfree(msg_buf);
+
+	return ret;
+}
+
+int ist30xx_read_buf(struct i2c_client *client, u32 cmd, u32 *buf, u16 len)
+{
+	int ret, i;
+	u32 le_reg = cpu_to_be32(cmd);
+
+	struct i2c_msg msg[READ_CMD_MSG_LEN] = {
+		{
+			.addr = client->addr,
+			.flags = 0,
+			.len = IST30XX_ADDR_LEN,
+			.buf = (u8 *)&le_reg,
+		},
+		{
+			.addr = client->addr,
+			.flags = I2C_M_RD,
+			.len = len * IST30XX_DATA_LEN,
+			.buf = (u8 *)buf,
+		},
+	};
+
+	ret = ist30xx_i2c_transfer(client->adapter, msg, READ_CMD_MSG_LEN, NULL);
+	if (unlikely(ret != READ_CMD_MSG_LEN))
+		return -EIO;
+
+	for (i = 0; i < len; i++)
+		buf[i] = cpu_to_be32(buf[i]);
+
+	return 0;
+}
+
+int ist30xx_write_buf(struct i2c_client *client, u32 cmd, u32 *buf, u16 len)
+{
+	int i;
+	int ret;
+	struct i2c_msg msg;
+	u8 cmd_buf[IST30XX_ADDR_LEN];
+	u8 msg_buf[IST30XX_DATA_LEN * (len + 1)];
+
+	put_unaligned_be32(cmd, cmd_buf);
+
+	if (likely(len > 0)) {
+		for (i = 0; i < len; i++)
+			put_unaligned_be32(buf[i], msg_buf + (i * IST30XX_DATA_LEN));
+	} else {
+		/* then add dummy data(4byte) */
+		put_unaligned_be32(0, msg_buf);
+		len = 1;
+	}
+
+	msg.addr = client->addr;
+	msg.flags = 0;
+	msg.len = IST30XX_DATA_LEN * len;
+	msg.buf = msg_buf;
+
+	ret = ist30xx_i2c_transfer(client->adapter, &msg, WRITE_CMD_MSG_LEN,
+				   cmd_buf);
+	if (unlikely(ret != WRITE_CMD_MSG_LEN))
+		return -EIO;
+
+	return 0;
+}
+
+int ist30xxb_burst_read(struct i2c_client *client, u32 addr,
+			u32 *buf32, int len)
+{
+	int ret = 0;
+	int i;
+	int max_len = I2C_MAX_READ_SIZE / IST30XX_DATA_LEN;
+
+	addr |= IST30XXB_BURST_ACCESS;
+
+	for (i = 0; i < len; i += max_len) {
+		if (len < max_len) max_len = len;
+
+		ret = ist30xx_read_buf(client, addr, buf32, max_len);
+		if (unlikely(ret)) {
+			tsp_err("Burst fail, addr: %x\n", __func__, addr);
+			return ret;
+		}
+
+		addr += max_len * IST30XX_DATA_LEN;
+		buf32 += max_len;
+	}
+
+	return 0;
+}
+
+#define IST30XXB_ISP_READ       (1)
+#define IST30XXB_ISP_WRITE      (2)
+#define IST30XXB_ISP_ERASE_ALL  (3)
+#define IST30XXB_ISP_ERASE_PAGE (4)
+
+int ist30xxb_isp_reset(void)
+{
+	int ret = 0;
+
+#if (IMAGIS_TSP_IC == IMAGIS_IST3038)
+	ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPMODE, 0x180);
+	if (unlikely(ret))
+		return ret;
+#else
+	ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPPWRCTRL, 0xB200);
+	if (unlikely(ret))
+		return ret;
+
+	ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPPWRCTRL, 0x9200);
+	if (unlikely(ret))
+		return ret;
+#endif
+	msleep(1);
+
+	return ret;
+}
+
+int ist30xxb_isp_enable(bool enable)
+{
+	int ret = 0;
+
+	if (enable) {
+		ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPISPEN, 0x1);
+		if (unlikely(ret))
+			return ret;
+
+		ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_LDOOSC, 0x74C8);
+		if (unlikely(ret))
+			return ret;
+
+		ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_CLKDIV, 0x3);
+		if (unlikely(ret))
+			return ret;
+
+#if (IMAGIS_TSP_IC != IMAGIS_IST3038)
+		ret = ist30xx_write_cmd(ts_data->client,
+					IST30XXB_REG_PADCTRL, 0x03300000);
+		if (unlikely(ret))
+			return ret;
+#endif
+
+		msleep(10);
+
+		ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_WDTCON, 0x0);
+		if (unlikely(ret))
+			return ret;
+	} else {
+		ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPISPEN, 0x0);
+		if (unlikely(ret))
+			return ret;
+
+		msleep(1);
+	}
+
+	return 0;
+}
+
+int ist30xxb_isp_mode(int mode)
+{
+	int ret = 0;
+	u32 val = 0;
+
+	switch (mode) {
+	case IST30XXB_ISP_READ:
+		val = 0x1C0;
+		break;
+	case IST30XXB_ISP_WRITE:
+		val = 0x1A8;
+		break;
+	case IST30XXB_ISP_ERASE_ALL:
+		val = 0x1A7;
+		break;
+	case IST30XXB_ISP_ERASE_PAGE:
+		val = 0x1A3;
+		break;
+	default:
+		tsp_err("ISP fail, unknown mode\n");
+		return -EINVAL;
+	}
+
+	ret = ist30xx_write_cmd(ts_data->client, IST30XXB_REG_EEPMODE, val);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_EEPMODE\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+int ist30xxb_isp_erase(struct i2c_client *client, int mode, u32 addr)
+{
+	int ret = 0;
+	u32 val = 0x1A0;
+	u8 buf[EEPROM_PAGE_SIZE] = { 0, };
+
+	ret = ist30xxb_isp_mode(mode);
+	if (unlikely(ret))
+		return ret;
+
+	ret = ist30xx_write_cmd(client, IST30XXB_REG_EEPADDR, addr);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_EEPADDR\n");
+		return ret;
+	}
+
+	val = (EEPROM_PAGE_SIZE / IST30XX_DATA_LEN);
+	ret = ist30xx_write_buf(client, IST30XXB_REG_EEPWDAT, (u32 *)buf, val);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_EEPWDAT\n");
+		return ret;
+	}
+
+	msleep(30);
+
+	ist30xxb_isp_reset();
+
+	return 0;
+}
+
+int ist30xxb_isp_write(struct i2c_client *client, u32 addr,
+		       const u32 *buf32, int len)
+{
+	int ret = 0;
+
+	ret = ist30xx_write_cmd(client, IST30XXB_REG_EEPADDR, addr);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_EEPADDR\n");
+		return ret;
+	}
+
+	ret = ist30xx_write_buf(client, IST30XXB_REG_EEPWDAT, (u32 *)buf32, len);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_EEPWDAT\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+int ist30xxb_isp_read(struct i2c_client *client, u32 addr,
+		      u32 *buf32, int len)
+{
+	int ret = 0;
+	int i;
+	int max_len = I2C_MAX_READ_SIZE / IST30XX_DATA_LEN;
+
+	for (i = 0; i < len; i += max_len) {
+		if (len < max_len) max_len = len;
+
+		/* IST30xxB ISP read mode */
+		ret = ist30xxb_isp_mode(IST30XXB_ISP_READ);
+		if (unlikely(ret))
+			return ret;
+
+		ret = ist30xx_write_cmd(client, IST30XXB_REG_EEPADDR, addr);
+		if (unlikely(ret)) {
+			tsp_err("ISP fail, IST30XXB_REG_EEPADDR\n");
+			return ret;
+		}
+
+		ret = ist30xx_read_buf(client, IST30XXB_REG_EEPRDAT, buf32, max_len);
+		if (unlikely(ret)) {
+			tsp_err("ISP fail, IST30XXB_REG_EEPWDAT\n");
+			return ret;
+		}
+
+		addr += max_len * IST30XX_DATA_LEN;
+		buf32 += max_len;
+	}
+
+	return 0;
+}
+
+int ist30xxb_cmd_read_chksum(struct i2c_client *client,
+			     u32 start_addr, u32 end_addr, u32 *chksum)
+{
+	int ret = 0;
+	u32 val = (1 << 31); // Chkecksum enable
+
+	val |= start_addr;
+	val |= (end_addr / IST30XX_DATA_LEN - 1) << 16;
+
+	ret = ist30xx_write_cmd(client, IST30XXB_REG_CHKSMOD, val);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_CHKSMOD (%x)\n", val);
+		return ret;
+	}
+	msleep(10);
+
+	ret = ist30xx_read_cmd(client, IST30XXB_REG_CHKSDAT, chksum);
+	if (unlikely(ret)) {
+		tsp_err("ISP fail, IST30XXB_REG_CHKSDAT (%x)\n", chksum);
+		return ret;
+	}
+
+	return 0;
+}
+
+int ist30xxb_read_chksum(struct i2c_client *client, u32 *chksum)
+{
+	int ret = 0;
+	u32 start_addr, end_addr;
+	u32 chksum1 = 0, chksum2 = 0;
+
+	start_addr = 0;
+	end_addr = ts_data->tags.fw_addr + ts_data->tags.fw_size;
+	ret = ist30xxb_cmd_read_chksum(client, start_addr, end_addr, &chksum1);
+	if (unlikely(ret))
+		return ret;
+
+	start_addr = ts_data->tags.cfg_addr;
+	end_addr = ts_data->tags.sensor3_addr + ts_data->tags.sensor3_size;
+	ret = ist30xxb_cmd_read_chksum(client, start_addr, end_addr, &chksum2);
+	if (unlikely(ret))
+		return ret;
+
+	*chksum = chksum1 | (chksum2 << 16);
+
+	tsp_info("chksum: %x(%x~%x, %x~%x)\n", *chksum,
+		 0, ts_data->tags.fw_addr + ts_data->tags.fw_size,
+		 start_addr, end_addr);
+
+	return 0;
+}
+
+int ist30xxb_read_chksum_all(struct i2c_client *client, u32 *chksum)
+{
+	int ret = 0;
+	u32 start_addr, end_addr;
+
+	start_addr = 0;
+	end_addr = IST30XX_EEPROM_SIZE;
+	ret = ist30xxb_cmd_read_chksum(client, start_addr, end_addr, chksum);
+	if (unlikely(ret))
+		return ret;
+
+	tsp_info("chksum: %x(%x~%x)\n", *chksum, start_addr, end_addr);
+
+	return 0;
+}
+
+int ist30xxb_isp_fw_read(struct i2c_client *client, u32 *buf32)
+{
+	int ret = 0;
+	int i;
+
+	u16 addr = EEPROM_BASE_ADDR;
+	int len = EEPROM_PAGE_SIZE / IST30XX_DATA_LEN;
+
+	ist30xx_reset(true);
+
+	/* IST30xxB ISP enable */
+	ret = ist30xxb_isp_enable(true);
+	if (unlikely(ret))
+		return ret;
+
+	for (i = 0; i < IST30XX_EEPROM_SIZE; i += EEPROM_PAGE_SIZE) {
+		ret = ist30xxb_isp_read(client, addr, buf32, len);
+		if (unlikely(ret))
+			goto isp_fw_read_end;
+
+		addr += EEPROM_PAGE_SIZE;
+		buf32 += len;
+	}
+
+isp_fw_read_end:
+	/* IST30xxB ISP disable */
+	ist30xxb_isp_enable(false);
+	return ret;
+}
+
+int ist30xxb_isp_fw_update(struct i2c_client *client, const u8 *buf,
+			   u32 *chksum)
+{
+	int ret = 0;
+	int i;
+	u32 page_cnt = IST30XX_EEPROM_SIZE / EEPROM_PAGE_SIZE;
+	u16 addr = EEPROM_BASE_ADDR;
+	int len = EEPROM_PAGE_SIZE / IST30XX_DATA_LEN;
+
+	ist30xx_tracking(TRACK_CMD_FWUPDATE);
+
+	/* IST30xxB ISP enable */
+	ret = ist30xxb_isp_enable(true);
+	if (unlikely(ret))
+		goto isp_fw_update_end;
+
+	/* IST30xxB ISP erase */
+	ret = ist30xxb_isp_erase(client, IST30XXB_ISP_ERASE_ALL, 0);
+	if (unlikely(ret))
+		goto isp_fw_update_end;
+
+#if (IMAGIS_TSP_IC == IMAGIS_IST3038)
+	/* IST30xxB ISP read all checksum */
+	ret = ist30xxb_read_chksum_all(client, chksum);
+	if (unlikely(ret))
+		goto isp_fw_update_end;
+
+	/* IST30xxB compare checksum */
+	if (unlikely(*chksum != 0))
+		goto isp_fw_update_end;
+#endif
+
+	/* IST30xxB power reset */
+	ist30xx_reset(true);
+
+	/* IST30xxB ISP enable */
+	ret = ist30xxb_isp_enable(true);
+	if (unlikely(ret))
+		goto isp_fw_update_end;
+
+	for (i = 0; i < page_cnt; i++) {
+		/* IST30xxB ISP write mode */
+		ret = ist30xxb_isp_mode(IST30XXB_ISP_WRITE);
+		if (unlikely(ret))
+			goto isp_fw_update_end;
+
+		ret = ist30xxb_isp_write(client, addr, (u32 *)buf, len);
+		if (unlikely(ret))
+			goto isp_fw_update_end;
+
+		addr += EEPROM_PAGE_SIZE;
+		buf += EEPROM_PAGE_SIZE;
+
+		msleep(5);
+
+		ist30xxb_isp_reset();
+	}
+
+#if (IMAGIS_TSP_IC == IMAGIS_IST3038)
+	ist30xxb_read_chksum_all(client, chksum);
+#endif
+
+isp_fw_update_end:
+	/* IST30xxB ISP disable */
+	ist30xxb_isp_enable(false);
+	return ret;
+}
+
+int ist30xx_fw_write(struct i2c_client *client, const u8 *buf)
+{
+	int ret;
+	int len;
+	u32 *buf32 = (u32 *)(buf + ts_data->fw.index);
+	u32 size = ts_data->fw.size;
+
+	if (unlikely((size <= 0) || (size > IST30XX_EEPROM_SIZE)))
+		return -ENOEXEC;
+
+	while (size > 0) {
+		len = (size >= EEPROM_PAGE_SIZE ? EEPROM_PAGE_SIZE : size);
+
+		ret = ist30xx_write_buf(client, CMD_ENTER_FW_UPDATE, buf32, (len >> 2));
+		if (unlikely(ret))
+			return ret;
+
+		buf32 += (len >> 2);
+		size -= len;
+
+		msleep(5);
+	}
+	return 0;
+}
+
+
+u32 ist30xx_parse_ver(int flag, const u8 *buf)
+{
+	u32 ver = 0;
+	u32 *buf32 = (u32 *)buf;
+
+	if (flag == FLAG_FW)
+		ver = (u32)buf32[(ts_data->tags.flag_addr + 60) >> 2];
+	else if (flag == FLAG_SUB)
+		ver = (u32)buf32[(ts_data->tags.flag_addr + 52) >> 2];
+	else if (flag == FLAG_PARAM)
+		ver = (u32)(buf32[(ts_data->tags.cfg_addr + 4) >> 2] & 0xFFFF);
+	else
+		tsp_warn("Parsing ver's flag is not corrent!\n");
+
+	return ver;
+}
+
+
+int calib_ms_delay = WAIT_CALIB_CNT;
+int ist30xx_calib_wait(void)
+{
+	int cnt = calib_ms_delay;
+
+	ts_data->status.calib_msg = 0;
+	while (cnt-- > 0) {
+		msleep(100);
+
+		if (ts_data->status.calib_msg) {
+			tsp_info("Calibration status : %d, Max raw gap : %d - (%08x)\n",
+				 CALIB_TO_STATUS(ts_data->status.calib_msg),
+				 CALIB_TO_GAP(ts_data->status.calib_msg),
+				 ts_data->status.calib_msg);
+
+			if (CALIB_TO_OS_VALUE(ts_data->status.calib_msg) == 0xFFFF)
+				return 1;
+			else if (CALIB_TO_STATUS(ts_data->status.calib_msg) == 0)
+				return 0;  // Calibrate success
+			else
+				return -EAGAIN;
+		}
+	}
+	tsp_warn("Calibration time out\n");
+
+	return -EPERM;
+}
+
+int ist30xx_calibrate(int wait_cnt)
+{
+	int ret = -ENOEXEC;
+
+	tsp_info("*** Calibrate %ds ***\n", calib_ms_delay / 10);
+
+	ts_data->status.update = 1;
+	while (wait_cnt--) {
+		ist30xx_disable_irq(ts_data);
+		ist30xx_reset(false);
+
+		ret = ist30xx_cmd_calibrate(ts_data->client);
+		if (unlikely(ret))
+			continue;
+
+		ist30xx_enable_irq(ts_data);
+		ret = ist30xx_calib_wait();
+		if (likely(!ret))
+			break;
+	}
+
+	ist30xx_disable_irq(ts_data);
+
+	ist30xx_reset(false);
+
+	ts_data->status.update = 2;
+
+	ist30xx_enable_irq(ts_data);
+
+	return ret;
+}
+
+
+int ist30xx_parse_tags(struct ist30xx_data *data, const u8 *buf, const u32 size)
+{
+	int ret = -EPERM;
+
+	ts_tags = (struct ist30xx_tags *)(&buf[size - sizeof(struct ist30xx_tags)]);
+
+	if (!strncmp(ts_tags->magic1, IST30XX_TAG_MAGIC, sizeof(ts_tags->magic1))
+	    && !strncmp(ts_tags->magic2, IST30XX_TAG_MAGIC, sizeof(ts_tags->magic2))
+	    ) {
+		data->fw.index = ts_tags->fw_addr;
+		data->fw.size = ts_tags->flag_addr - ts_tags->fw_addr +
+				ts_tags->flag_size;
+		data->fw.chksum = ts_tags->chksum;
+		data->tags = *ts_tags;
+
+		ret = 0;
+	}
+
+	tsp_verb("Tagts magic1: %s, magic2: %s\n",
+		 ts_tags->magic1, ts_tags->magic2);
+	tsp_verb(" fw: %x(%x)\n", ts_tags->fw_addr, ts_tags->fw_size);
+	tsp_verb(" flag: %x(%x)\n", ts_tags->flag_addr, ts_tags->flag_size);
+	tsp_verb(" cfg: %x(%x)\n", ts_tags->cfg_addr, ts_tags->cfg_size);
+	tsp_verb(" sensor1: %x(%x)\n", ts_tags->sensor1_addr,
+		 ts_tags->sensor1_size);
+	tsp_verb(" sensor2: %x(%x)\n", ts_tags->sensor2_addr,
+		 ts_tags->sensor2_size);
+	tsp_verb(" sensor3: %x(%x)\n", ts_tags->sensor3_addr,
+		 ts_tags->sensor3_size);
+	tsp_verb(" chksum: %x\n", ts_tags->chksum);
+	tsp_verb(" build time : %04d/%02d/%02d (%02d:%02d:%02d)\n",
+		 ts_tags->year, ts_tags->month, ts_tags->day,
+		 ts_tags->hour, ts_tags->min, ts_tags->sec);
+
+	return ret;
+}
+
+void ist30xx_get_update_info(struct ist30xx_data *data, const u8 *buf,
+			     const u32 size)
+{
+	int ret;
+
+	ret = ist30xx_parse_tags(data, buf, size);
+	if (unlikely(ret != TAGS_PARSE_OK))
+		tsp_warn("Cannot find tags of F/W, make a tags by 'tagts.exe'\n");
+}
+
+#if (IST30XX_DEBUG) && (IST30XX_INTERNAL_BIN)
+extern TSP_INFO ist30xx_tsp_info;
+extern TKEY_INFO ist30xx_tkey_info;
+int ist30xx_get_tkey_info(struct ist30xx_data *data)
+{
+	int ret = 0;
+	TSP_INFO *tsp = &ist30xx_tsp_info;
+	TKEY_INFO *tkey = &ist30xx_tkey_info;
+	u8 *cfg_buf;
+
+	cfg_buf = (u8 *)&data->fw.buf[data->tags.cfg_addr];
+
+	tkey->enable = (bool)(cfg_buf[0x321] & 1);
+	tkey->axis_rx = (bool)((cfg_buf[0x321] >> 1) & 1);
+	tkey->key_num = (u8)cfg_buf[0x322];
+    tkey->baseline = (u16)((cfg_buf[0x324] << 8) | cfg_buf[0x323]);
+	tkey->ch_num[0] = (u8)cfg_buf[0x326];
+	tkey->ch_num[1] = (u8)cfg_buf[0x327];
+	tkey->ch_num[2] = (u8)cfg_buf[0x328];
+	tkey->ch_num[3] = (u8)cfg_buf[0x329];
+	tkey->ch_num[4] = (u8)cfg_buf[0x32A];
+
+	if (tkey->axis_rx) {
+		if (tsp->dir.swap_xy)
+			tsp->height -= 1;
+		else
+			tsp->width -= 1;
+	} else {
+		if (tsp->dir.swap_xy)
+			tsp->width -= 1;
+		else
+			tsp->height -= 1;
+	}
+
+	return ret;
+}
+
+#define TSP_INFO_SWAP_XY    (1 << 0)
+#define TSP_INFO_FLIP_X     (1 << 1)
+#define TSP_INFO_FLIP_Y     (1 << 2)
+int ist30xx_get_tsp_info(struct ist30xx_data *data)
+{
+	int ret = 0;
+	TSP_INFO *tsp = &ist30xx_tsp_info;
+	u8 *cfg_buf, *sensor_buf;
+
+	cfg_buf = (u8 *)&data->fw.buf[data->tags.cfg_addr];
+	sensor_buf = (u8 *)&data->fw.buf[data->tags.sensor1_addr];
+
+	tsp->finger_num = (u8)cfg_buf[0x304];
+	tsp->dir.swap_xy = (bool)(cfg_buf[0x305] & TSP_INFO_SWAP_XY ? true : false);
+	tsp->dir.flip_x = (bool)(cfg_buf[0x305] & TSP_INFO_FLIP_X ? true : false);
+	tsp->dir.flip_y = (bool)(cfg_buf[0x305] & TSP_INFO_FLIP_Y ? true : false);
+    tsp->baseline = (u16)((cfg_buf[0x319] << 8) | cfg_buf[0x318]);
+
+	tsp->ch_num.tx = (u8)sensor_buf[0x40];
+	tsp->ch_num.rx = (u8)sensor_buf[0x41];
+
+	tsp->node.len = tsp->ch_num.tx * tsp->ch_num.rx;
+	tsp->height = (tsp->dir.swap_xy ? tsp->ch_num.rx : tsp->ch_num.tx);
+	tsp->width = (tsp->dir.swap_xy ? tsp->ch_num.tx : tsp->ch_num.rx);
+
+	return ret;
+}
+#endif // (IST30XX_DEBUG) && (IST30XX_INTERNAL_BIN)
+
+
+#define update_next_step(ret)   { if (unlikely(ret)) goto end; }
+int ist30xx_fw_update(struct i2c_client *client, const u8 *buf, int size,
+		      bool mode)
+{
+	int ret = 0;
+	u32 chksum = 0;
+	struct ist30xx_fw *fw = &ts_data->fw;
+
+	tsp_info("*** Firmware update ***\n");
+	tsp_info(" core: %x, param: %x, sub: %x (addr: 0x%x ~ 0x%x)\n",
+		 ist30xx_fw_ver, ist30xx_param_ver, ist30xx_sub_ver,
+		 fw->index, (fw->index + fw->size));
+
+	ts_data->status.update = 1;
+
+	ist30xx_disable_irq(ts_data);
+
+	ist30xx_reset(true);
+
+	if (mode) { /* ISP Mode */
+		ret = ist30xxb_isp_fw_update(client, buf, &chksum);
+		update_next_step(ret);
+	} else { /* I2C SW Mode */
+		ret = ist30xx_cmd_update(client, CMD_ENTER_FW_UPDATE);
+		update_next_step(ret);
+
+		ret = ist30xx_fw_write(client, buf);
+		update_next_step(ret);
+	}
+	msleep(50);
+
+	buf += IST30XX_EEPROM_SIZE;
+	size -= IST30XX_EEPROM_SIZE;
+
+	ist30xx_reset(false);
+
+	ret = ist30xx_read_cmd(client, CMD_GET_CHECKSUM, &chksum);
+	if (unlikely((ret) || (chksum != fw->chksum)))
+		goto end;
+
+	ret = ist30xx_get_ver_info(ts_data);
+	update_next_step(ret);
+
+end:
+	if (unlikely(ret)) {
+		tsp_warn("Firmware update Fail!, ret=%d\n", ret);
+	} else if (unlikely(chksum != fw->chksum)) {
+		tsp_warn("Error CheckSum: %x(%x)\n", chksum, fw->chksum);
+		ret = -ENOEXEC;
+	}
+
+	ist30xx_enable_irq(ts_data);
+
+	ts_data->status.update = 2;
+
+	return ret;
+}
+
+int ist30xx_fw_recovery(struct ist30xx_data *data)
+{
+	int ret = -EPERM;
+	u8 *fw = data->fw.buf;
+	int fw_size = data->fw.buf_size;
+
+	ist30xx_get_update_info(data, fw, fw_size);
+	ist30xx_fw_ver = ist30xx_parse_ver(FLAG_FW, fw);
+	ist30xx_param_ver = ist30xx_parse_ver(FLAG_PARAM, fw);
+	ist30xx_sub_ver = ist30xx_parse_ver(FLAG_SUB, fw);
+
+	mutex_lock(&ist30xx_mutex);
+	ret = ist30xx_fw_update(data->client, fw, fw_size, true);
+	ist30xx_calibrate(1);
+	mutex_unlock(&ist30xx_mutex);
+
+	ist30xx_start(data);
+
+	return ret;
+}
+
+#if IST30XX_INTERNAL_BIN
+int ist30xx_check_fw(struct ist30xx_data *data, const u8 *buf)
+{
+	int ret;
+	u32 chksum;
+
+	ret = ist30xx_read_cmd(data->client, CMD_GET_CHECKSUM, &chksum);
+	if (unlikely(ret))
+		return ret;
+
+	if (unlikely(chksum != data->fw.chksum)) {
+		tsp_warn("Checksum compare error, (IC: %08x, Bin: %08x)\n",
+			 chksum, data->fw.chksum);
+		return -EPERM;
+	}
+
+	return 0;
+}
+
+bool ist30xx_check_valid_vendor(u32 tsp_vendor)
+{
+	switch (tsp_vendor) {
+	case TSP_TYPE_ALPS:
+	case TSP_TYPE_EELY:
+	case TSP_TYPE_TOP:
+	case TSP_TYPE_MELFAS:
+	case TSP_TYPE_ILJIN:
+	case TSP_TYPE_SYNOPEX:
+	case TSP_TYPE_SMAC:
+	case TSP_TYPE_TAEYANG:
+	case TSP_TYPE_TOVIS:
+	case TSP_TYPE_ELK:
+	case TSP_TYPE_OTHERS:
+		return true;
+	default:
+		return false;
+	}
+
+	return false;
+}
+
+#if IST30XX_MULTIPLE_TSP
+void ist30xx_set_tsp_fw(struct ist30xx_data *data)
+{
+	char *str;
+	struct ist30xx_fw *fw = &data->fw;
+
+	switch (data->tsp_type) {
+	case TSP_TYPE_ALPS:
+	case TSP_TYPE_ILJIN:
+		str = "ALPS/ILJIN";
+		fw->buf = (u8 *)ist30xxb_fw;
+		fw->buf_size = sizeof(ist30xxb_fw);
+		break;
+	case TSP_TYPE_EELY:
+		str = "EELY";
+		fw->buf = (u8 *)ist30xxb_fw2;
+		fw->buf_size = sizeof(ist30xxb_fw2);
+		break;
+
+	case TSP_TYPE_UNKNOWN:
+	default:
+		str = "Unknown";
+		tsp_warn("Unknown TSP vendor(0x%x)\n", data->tsp_type);
+		break;
+	}
+	tsp_info("TSP vendor : %s(%x)\n", str, data->tsp_type);
+
+	ist30xx_get_update_info(ts_data, fw->buf, fw->buf_size);
+	ist30xx_fw_ver = ist30xx_parse_ver(FLAG_FW, fw->buf);
+	ist30xx_param_ver = ist30xx_parse_ver(FLAG_PARAM, fw->buf);
+	ist30xx_sub_ver = ist30xx_parse_ver(FLAG_SUB, fw->buf);
+}
+#endif  // IST30XX_MULTIPLE_TSP
+
+int ist30xx_check_auto_update(struct ist30xx_data *data)
+{
+	int ret = 0;
+	int retry = IST30XX_FW_UPDATE_RETRY;
+	u32 tsp_type = TSP_TYPE_UNKNOWN;
+	u32 chksum;
+	bool tsp_check = false;
+	struct ist30xx_fw *fw = &data->fw;
+
+	while (retry--) {
+		ret = ist30xx_read_cmd(data->client,
+				       CMD_GET_TSP_PANNEL_TYPE, &tsp_type);
+		if (likely(ret == 0)) {
+			if (likely(ist30xx_check_valid_vendor(tsp_type) == true))
+				tsp_check = true;
+			break;
+		}
+	}
+
+	retry = IST30XX_FW_UPDATE_RETRY;
+
+	if (unlikely(!tsp_check))
+		goto fw_check_end;
+
+	ist30xx_get_ver_info(data);
+
+	if (likely((fw->param_ver > 0) && (fw->param_ver < 0xFFFFFFFF))) {
+		if (unlikely(((fw->core_ver & MASK_FW_VER) != IST30XX_FW_VER3) &&
+			     ((fw->core_ver & MASK_FW_VER) != IST30XX_FW_VER4) &&
+			     ((fw->core_ver & MASK_FW_VER) != IST30XX_FW_VER5)))
+			goto fw_check_end;
+
+		tsp_info("Version compare IC: %x(%x), BIN: %x(%x)\n",
+			 fw->param_ver, fw->core_ver, ist30xx_param_ver, ist30xx_fw_ver);
+
+		/* If FW version is same, check FW checksum */
+		if (likely((fw->core_ver == ist30xx_fw_ver) &&
+			   (fw->param_ver == ist30xx_param_ver) &&
+			   (fw->sub_ver == 0))) {
+			ret = ist30xx_read_cmd(data->client, CMD_GET_CHECKSUM, &chksum);
+			if (unlikely((ret) || (chksum != fw->chksum))) {
+				tsp_warn("Checksum error, IC: %x, Bin: %x (ret: %d)\n",
+					 chksum, fw->chksum, ret);
+				goto fw_check_end;
+			}
+		}
+
+		/*
+		 *  fw->core_ver : FW core version in TSP IC
+		 *  fw->param_ver : FW version if TSP IC
+		 *  ist30xx_fw_ver : FW core version in FW Binary
+		 *  ist30xx_fw_ver : FW version in FW Binary
+		 */
+		/* If the ver of binary is higher than ver of IC, FW update operate. */
+
+		if (likely((fw->core_ver >= ist30xx_fw_ver) &&
+			   (fw->param_ver >= ist30xx_param_ver)))
+			return 0;
+	}
+
+fw_check_end:
+	return -EAGAIN;
+}
+
+int ist30xx_auto_bin_update(struct ist30xx_data *data)
+{
+	int ret = 0;
+	int retry = IST30XX_FW_UPDATE_RETRY;
+	struct ist30xx_fw *fw = &data->fw;
+
+	fw->buf = (u8 *)ist30xxb_fw;
+	fw->buf_size = sizeof(ist30xxb_fw);
+
+#if IST30XX_MULTIPLE_TSP
+	ist30xx_set_tsp_fw(data);
+#else
+	ist30xx_get_update_info(data, fw->buf, fw->buf_size);
+	ist30xx_fw_ver = ist30xx_parse_ver(FLAG_FW, fw->buf);
+	ist30xx_param_ver = ist30xx_parse_ver(FLAG_PARAM, fw->buf);
+	ist30xx_sub_ver = ist30xx_parse_ver(FLAG_SUB, fw->buf);
+#endif
+
+	tsp_info("IC: %x, Binary ver core: %x, param: %x, sub: %x\n",
+		 data->chip_id, ist30xx_fw_ver, ist30xx_param_ver, ist30xx_sub_ver);
+    
+	mutex_lock(&ist30xx_mutex);
+	ret = ist30xx_check_auto_update(data);
+	mutex_unlock(&ist30xx_mutex);
+
+	if (likely(ret >= 0))
+		return ret;
+
+update_bin:   // TSP is not ready / FW update
+	tsp_info("Update version. param(core): %x(%x, %x) -> %x(%x, %x)\n",
+		 fw->param_ver, fw->core_ver, fw->sub_ver,
+		 ist30xx_param_ver, ist30xx_fw_ver, ist30xx_sub_ver);
+
+	mutex_lock(&ist30xx_mutex);
+	while (retry--) {
+		ret = ist30xx_fw_update(data->client, fw->buf, fw->buf_size, true);
+		if (unlikely(!ret))
+			break;
+	}
+	mutex_unlock(&ist30xx_mutex);
+
+	if (unlikely(ret))
+		return ret;
+
+	if (unlikely(retry > 0 && ist30xx_check_fw(data, fw->buf)))
+		goto update_bin;
+
+	ist30xx_calibrate(IST30XX_FW_UPDATE_RETRY);
+
+	return ret;
+}
+#endif // IST30XX_INTERNAL_BIN
+
+#define MAX_FILE_PATH   255
+/* sysfs: /sys/class/touch/firmware/firmware */
+ssize_t ist30xx_fw_store(struct device *dev, struct device_attribute *attr,
+			 const char *buf, size_t size)
+{
+	int ret;
+	int fw_size = 0;
+	u8 *fw = NULL;
+	const u8 *buff = 0;
+	mm_segment_t old_fs = { 0 };
+	struct file *fp = NULL;
+	long fsize = 0, nread = 0;
+	char fw_path[MAX_FILE_PATH];
+	const struct firmware *request_fw = NULL;
+	int mode = 0;
+	int calib = 1;
+
+	sscanf(buf, "%d %d", &mode, &calib);
+
+	switch (mode) {
+	case MASK_UPDATE_INTERNAL:
+#if IST30XX_INTERNAL_BIN
+		fw = ts_data->fw.buf;
+		fw_size = ts_data->fw.buf_size;
+#else
+		tsp_warn("Not support internal bin!!\n", );
+		return size;
+#endif
+		break;
+
+	case MASK_UPDATE_FW:
+		ret = request_firmware(&request_fw, IST30XXB_FW_NAME,
+				       &ts_data->client->dev);
+		if (ret) {
+			tsp_warn("File not found, %s\n", IST30XXB_FW_NAME);
+			return size;
+		}
+
+		fw = (u8 *)request_fw->data;
+		fw_size = (u32)request_fw->size;
+		break;
+
+	case MASK_UPDATE_SDCARD:
+		old_fs = get_fs();
+		set_fs(get_ds());
+
+		snprintf(fw_path, MAX_FILE_PATH, "/sdcard/touch/firmware/%s",
+			 IST30XXB_FW_NAME);
+		fp = filp_open(fw_path, O_RDONLY, 0);
+		if (IS_ERR(fp)) {
+			tsp_info("file %s open error:%d\n", fw_path, (s32)fp);
+			goto err_file_open;
+		}
+
+		fsize = fp->f_path.dentry->d_inode->i_size;
+
+		buff = kzalloc((size_t)fsize, GFP_KERNEL);
+		if (!buff) {
+			tsp_info("fail to alloc buffer\n");
+			goto err_alloc;
+		}
+
+		nread = vfs_read(fp, (char __user *)buff, fsize, &fp->f_pos);
+		if (nread != fsize) {
+			tsp_info("mismatch fw size\n");
+			goto err_fw_size;
+		}
+
+		fw = (u8 *)buff;
+		fw_size = (u32)fsize;
+
+		filp_close(fp, current->files);
+		tsp_info("firmware is loaded!!\n");
+		break;
+
+	case MASK_UPDATE_ERASE:
+		tsp_info("EEPROM all erase!!\n");
+
+		mutex_lock(&ist30xx_mutex);
+		ist30xx_disable_irq(ts_data);
+		ist30xxb_isp_enable(true);
+		ist30xxb_isp_erase(ts_data->client, IST30XXB_ISP_ERASE_ALL, 0);
+		ist30xxb_isp_enable(false);
+		ist30xx_reset(false);
+		ist30xx_enable_irq(ts_data);
+		mutex_unlock(&ist30xx_mutex);
+
+		ist30xx_start(ts_data);
+
+	default:
+		return size;
+	}
+
+	ist30xx_get_update_info(ts_data, fw, fw_size);
+	ist30xx_fw_ver = ist30xx_parse_ver(FLAG_FW, fw);
+	ist30xx_param_ver = ist30xx_parse_ver(FLAG_PARAM, fw);
+	ist30xx_sub_ver = ist30xx_parse_ver(FLAG_SUB, fw);
+
+	mutex_lock(&ist30xx_mutex);
+	ist30xx_fw_update(ts_data->client, fw, fw_size, true);
+
+	if (calib)
+		ist30xx_calibrate(1);
+	mutex_unlock(&ist30xx_mutex);
+
+	ist30xx_start(ts_data);
+
+	if (request_fw != NULL)
+		release_firmware(request_fw);
+
+	if (fp != NULL) {
+err_fw_size:
+		kfree(buff);
+err_alloc:
+		filp_close(fp, NULL);
+err_file_open:
+		set_fs(old_fs);
+	}
+
+	return size;
+}
+
+/* sysfs: /sys/class/touch/firmware/fw_sdcard */
+ssize_t ist30xx_fw_sdcard_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
+{
+	int fw_size = 0;
+	u8 *fw = NULL;
+	const u8 *buff = 0;
+	mm_segment_t old_fs = { 0 };
+	struct file *fp = NULL;
+	long fsize = 0, nread = 0;
+	char fw_path[MAX_FILE_PATH];
+
+	old_fs = get_fs();
+	set_fs(get_ds());
+
+	snprintf(fw_path, MAX_FILE_PATH, "/sdcard/touch/firmware/%s",
+		 IST30XXB_FW_NAME);
+	fp = filp_open(fw_path, O_RDONLY, 0);
+	if (IS_ERR(fp)) {
+		tsp_info("file %s open error:%d\n", fw_path, (s32)fp);
+		goto err_file_open;
+	}
+
+	fsize = fp->f_path.dentry->d_inode->i_size;
+
+	buff = kzalloc((size_t)fsize, GFP_KERNEL);
+	if (!buff) {
+		tsp_info("fail to alloc buffer\n");
+		goto err_alloc;
+	}
+
+	nread = vfs_read(fp, (char __user *)buff, fsize, &fp->f_pos);
+	if (nread != fsize) {
+		tsp_info("mismatch fw size\n");
+		goto err_fw_size;
+	}
+
+	fw = (u8 *)buff;
+	fw_size = (u32)fsize;
+
+	filp_close(fp, current->files);
+	tsp_info("firmware is loaded!!\n");
+
+	ist30xx_get_update_info(ts_data, fw, fw_size);
+	ist30xx_fw_ver = ist30xx_parse_ver(FLAG_FW, fw);
+	ist30xx_param_ver = ist30xx_parse_ver(FLAG_PARAM, fw);
+	ist30xx_sub_ver = ist30xx_parse_ver(FLAG_SUB, fw);
+
+	mutex_lock(&ist30xx_mutex);
+	ist30xx_fw_update(ts_data->client, fw, fw_size, true);
+	mutex_unlock(&ist30xx_mutex);
+
+	ist30xx_start(ts_data);
+
+err_fw_size:
+	if (buff)
+		kfree(buff);
+err_alloc:
+	if (fp)
+		filp_close(fp, NULL);
+err_file_open:
+	set_fs(old_fs);
+
+	return 0;
+}
+
+/* sysfs: /sys/class/touch/firmware/firmware */
+ssize_t ist30xx_fw_status_show(struct device *dev,
+			       struct device_attribute *attr, char *buf)
+{
+	int count;
+
+	switch (ts_data->status.update) {
+	case 1:
+		count = sprintf(buf, "Downloading\n");
+		break;
+	case 2:
+		count = sprintf(buf, "Update success, ver %x(%x) -> %x(%x, %x), "
+				"status : %d, gap : %d\n",
+				ts_data->fw.prev_param_ver, ts_data->fw.prev_core_ver,
+				ts_data->fw.param_ver, ts_data->fw.core_ver,
+				ts_data->fw.sub_ver,
+				CALIB_TO_STATUS(ts_data->status.calib_msg),
+				CALIB_TO_GAP(ts_data->status.calib_msg));
+		break;
+	default:
+		count = sprintf(buf, "Pass\n");
+	}
+
+	return count;
+}
+
+/* sysfs: /sys/class/touch/firmware/fw_read */
+u32 buf32_eeprom[IST30XX_EEPROM_SIZE / IST30XX_DATA_LEN];
+ssize_t ist30xx_fw_read_show(struct device *dev, struct device_attribute *attr,
+			     char *buf)
+{
+	int i;
+	u8 *buf8 = (u8 *)buf32_eeprom;;
+
+	mutex_lock(&ist30xx_mutex);
+	ist30xx_disable_irq(ts_data);
+
+	ist30xxb_isp_fw_read(ts_data->client, buf32_eeprom);
+	for (i = 0; i < IST30XX_EEPROM_SIZE; i += 16) {
+		tsp_debug("%07x: %02x%02x %02x%02x %02x%02x %02x%02x "
+			  "%02x%02x %02x%02x %02x%02x %02x%02x\n", i,
+			  buf8[i], buf8[i + 1], buf8[i + 2], buf8[i + 3],
+			  buf8[i + 4], buf8[i + 5], buf8[i + 6], buf8[i + 7],
+			  buf8[i + 8], buf8[i + 9], buf8[i + 10], buf8[i + 11],
+			  buf8[i + 12], buf8[i + 13], buf8[i + 14], buf8[i + 15]);
+	}
+
+	ist30xx_reset(false);
+	ist30xx_enable_irq(ts_data);
+	mutex_unlock(&ist30xx_mutex);
+
+	ist30xx_start(ts_data);
+
+	return 0;
+}
+
+/* sysfs: /sys/class/touch/firmware/version */
+ssize_t ist30xx_fw_version_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int count;
+
+	count = sprintf(buf, "ID: %x, f/w core: %x, param: %x, sub: %x\n",
+			ts_data->chip_id, ts_data->fw.core_ver,
+			ts_data->fw.param_ver, ts_data->fw.sub_ver);
+
+#if IST30XX_INTERNAL_BIN
+	{
+		char msg[128];
+
+		ist30xx_get_update_info(ts_data, ts_data->fw.buf, ts_data->fw.buf_size);
+
+		count += snprintf(msg, sizeof(msg),
+				  " Header - f/w ver: %x, param: %x, sub: %x\r\n",
+				  ist30xx_parse_ver(FLAG_FW, ts_data->fw.buf),
+				  ist30xx_parse_ver(FLAG_PARAM, ts_data->fw.buf),
+				  ist30xx_parse_ver(FLAG_SUB, ts_data->fw.buf));
+		strncat(buf, msg, sizeof(msg));
+	}
+#endif
+
+	return count;
+}
+
+
+/* sysfs  */
+static DEVICE_ATTR(fw_read, S_IRWXUGO, ist30xx_fw_read_show, NULL);
+static DEVICE_ATTR(firmware, S_IRWXUGO, ist30xx_fw_status_show,
+		   ist30xx_fw_store);
+static DEVICE_ATTR(fw_sdcard, S_IRWXUGO, ist30xx_fw_sdcard_show, NULL);
+static DEVICE_ATTR(version, S_IRWXUGO, ist30xx_fw_version_show, NULL);
+
+struct class *ist30xx_class;
+struct device *ist30xx_fw_dev;
+
+static struct attribute *fw_attributes[] = {
+	&dev_attr_fw_read.attr,
+	&dev_attr_firmware.attr,
+	&dev_attr_fw_sdcard.attr,
+	&dev_attr_version.attr,
+	NULL,
+};
+
+static struct attribute_group fw_attr_group = {
+	.attrs	= fw_attributes,
+};
+
+int ist30xx_init_update_sysfs(void)
+{
+	/* /sys/class/touch */
+	ist30xx_class = class_create(THIS_MODULE, "touch");
+
+	/* /sys/class/touch/firmware */
+	ist30xx_fw_dev = device_create(ist30xx_class, NULL, 0, NULL, "firmware");
+
+	/* /sys/class/touch/firmware/... */
+	if (unlikely(sysfs_create_group(&ist30xx_fw_dev->kobj, &fw_attr_group)))
+		tsp_err("Failed to create sysfs group(%s)!\n", "firmware");
+
+	ts_data->status.update = 0;
+	ts_data->status.calib = 0;
+
+	return 0;
+}