[Fixed Warnings.]
Add new touchpad driver for Zinitix IC
Supports five fingers multi-touch and firmware updates.
It communicates with the device via an I2C bus.
Signed-off-by : KwangDeok Son <kd...@zinitix.com>
---
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index d8b6a5dab190..effd1b019b02 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -457,4 +457,15 @@ config MOUSE_NAVPOINT_PXA27x
To compile this driver as a module, choose M here: the
module will be called navpoint.
+config MOUSE_ZINITIX_I2C
+ tristate "ZINITIX I2C Touchpad support"
+ depends on I2C
+ help
+ This driver adds support for Zinitix I2C Touchpad.
+
+ Say Y here if you have a Zinitix I2C Touchpad.
+
+ To compile this driver as a module, choose M here: the module will be
+ called zinitix_i2c.
+
endif
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index e49f08565076..93ffa556a311 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o
obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o
+obj-$(CONFIG_MOUSE_ZINITIX_I2C) += zinitix_i2c.o
cyapatp-objs := cyapa.o cyapa_gen3.o cyapa_gen5.o cyapa_gen6.o
psmouse-objs := psmouse-base.o synaptics.o focaltech.o
diff --git a/drivers/input/mouse/zinitix_i2c.c
b/drivers/input/mouse/zinitix_i2c.c
index e69de29bb2d1..d441b1cb1274 100755
--- a/drivers/input/mouse/zinitix_i2c.c
+++ b/drivers/input/mouse/zinitix_i2c.c
@@ -0,0 +1,1491 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Zinitics I2C Touchpad driver
+ *
+ * Copyright (c) 2020 ZINITIX Co.,Ltd
+ *
+ * Author: KwangDeok Son <kd...@zinitix.com>
+ *
+ * Based on elan driver:
+ * Copyright (c) 2011-2013 ELAN Microelectronics Corp.
+ * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
+ * copyright (c) 2011-2012 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/input.h>
+#include <linux/uaccess.h>
+#include <linux/jiffies.h>
+#include <linux/completion.h>
+#include <linux/of.h>
+#include <asm/unaligned.h>
+
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <linux/input/mt.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/regulator/consumer.h>
+#include "zinitix_i2c.h"
+
+static int zinitix_i2c_read(struct i2c_client *client, u16 reg, u8 *val, u16
len)
+{
+ __le16 buf[] = {
+ cpu_to_le16(reg),
+ };
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = sizeof(buf),
+ .buf = (u8 *)buf,
+ },
+ {
+ .addr = client->addr,
+ .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
+ .len = len,
+ .buf = val,
+ }
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
+}
+
+static int zinitix_i2c_write(struct i2c_client *client, u16 reg, u16 cmd)
+{
+ __le16 buf[] = {
+ cpu_to_le16(reg),
+ cpu_to_le16(cmd),
+ };
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = sizeof(buf),
+ .buf = (u8 *)buf,
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret != 1) {
+ if (ret >= 0)
+ ret = -EIO;
+ dev_err(&client->dev, "writing cmd (0x%04x) failed: %d\n", reg,
ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_read_buf(struct i2c_client *client, u8 *buf, u16
bufsize, u8 *val, u16 len)
+{
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = bufsize,
+ .buf = buf,
+ },
+ {
+ .addr = client->addr,
+ .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
+ .len = len,
+ .buf = val,
+ }
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
+}
+
+static int zinitix_i2c_write_buf(struct i2c_client *client, u8 *buf, u8
bufsize)
+{
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = bufsize,
+ .buf = buf,
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret != 1) {
+ if (ret >= 0)
+ ret = -EIO;
+ dev_err(&client->dev, "writing cmd (%s) failed: %d\n",
+ buf, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int zinitix_i2c_write_reg(struct i2c_client *client, u16 reg, u16 value)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[6] = reg & 0xFF;
+ buf[7] = (reg>>8)&0xFF;
+ buf[8] = value & 0xFF;
+ buf[9] = (value>>8)&0xFF;
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+int zinitix_i2c_write_data(struct i2c_client *client, u16 reg, const u8
*value, u16 size)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[5] = size & 0xFF;
+ buf[6] = reg & 0xFF;
+ buf[7] = (reg>>8)&0xFF;
+ memcpy(&buf[8], value, size);
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+int zinitix_i2c_write_fwdata(struct i2c_client *client, u16 reg, const u8
*value, u16 size)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[5] = size & 0xFF;
+
+ memcpy(&buf[6], value, size);
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+u16 zinitix_i2c_read_reg(struct i2c_client *client, u16 reg, u16 *value)
+{
+ u16 retval = 0;
+ u8 outBuf[26] = {0x94, 0x1, 0x26, 0x3, 0x96, 0x1, 0x14, 0, 0x6, 0x1, };
+ u8 inBuf[8] = {0, };
+
+ //Sample
+ outBuf[10] = reg & 0xFF;
+ outBuf[11] = (reg>>8)&0xFF;
+ //Send
+ retval = (u16)zinitix_i2c_write_buf(client, outBuf, 26);
+ //Recv
+ outBuf[2] = 0x16;
+ outBuf[3] = 0x02;
+ retval = (u16)zinitix_i2c_read_buf(client, outBuf, 6, inBuf, 8);
+ if (retval < 0) {
+ dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
+ return retval;
+ }
+
+ *value = (inBuf[6]&0xFF) | ((inBuf[7]<<8)&0xFF00);
+
+ return retval;
+}
+
+u16 zinitix_i2c_read_data(struct i2c_client *client, u16 reg, u8 *verify_data)
+{
+ u16 retval = 0;
+ u8 outBuf[26] = {0x94, 0x1, 0x26, 0x3, 0x96, 0x1, 0x14, 0, 0x6, 0x1, };
+ u8 inBuf[20] = {0, };
+
+ //Sample
+ outBuf[10] = reg & 0xFF;
+ outBuf[11] = (reg>>8)&0xFF;
+ //Send
+ retval = (u16)zinitix_i2c_write_buf(client, outBuf, 26);
+ //Recv
+ outBuf[2] = 0x16;
+ outBuf[3] = 0x02;
+ retval = (u16)zinitix_i2c_read_buf(client, outBuf, 6, inBuf, 20);
+ if (retval < 0) {
+ dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
+ return retval;
+ }
+
+ memcpy(verify_data, &inBuf[4], SECTOR_SZ);
+
+ return retval;
+}
+
+static int zinitix_sleep_control(struct i2c_client *client, u16 mode)
+{
+ int error;
+
+ error = zinitix_i2c_write(client, ZINITIX_STANDARD_CMD, mode);
+ if (error)
+ dev_err(&client->dev, "device wake up failed: %d\n",
error);
+ else
+ msleep(100); /* Wait for the device to control */
+
+ return error;
+}
+
+static int zinitix_reset(struct i2c_client *client)
+{
+ int error;
+ u8 val[12];
+
+ error = zinitix_i2c_write(client, ZINITIX_STANDARD_CMD, ZINITIX_RESET);
+ if (error)
+ dev_err(&client->dev, "device reset failed: %d\n", error);
+ else {
+ msleep(100); /* Wait for the device to reset */
+
+ error = i2c_master_recv(client, val, 12);
+ if (error < 0) {
+ dev_err(&client->dev, "failed read reset response:
%d\n", error);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int get_descriptor(struct i2c_client *client, u8 *val)
+{
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int error;
+
+ error = zinitix_i2c_read(client, ZINITIX_GET_DESC, val,
ZINITIX_DESC_LENGTH);
+ if (error)
+ dev_err(&client->dev, "can't get descriptor: %d\n", error);
+ else
+ data->chip_code = (u16)(val[16] + (val[17]<<8));
+
+ return error;
+}
+
+static int get_report_descriptor(struct i2c_client *client)
+{
+ int error = 0;
+ u8 val[ZINITIX_REPORT_DESC_LENGTH] = {0,};
+ struct touchpad_data *data = i2c_get_clientdata(client);
+
+ //Get HID Report Descriptor
+ error = zinitix_i2c_read(client, ZINITIX_GET_REPORT_DESC, val,
sizeof(val));
+
+ //Get infomation to parse desc
+ data->phy_x = *((u16 *)&val[ZINITIX_PHY_X_OFFSET]);
+ data->phy_y = *((u16 *)&val[ZINITIX_PHY_Y_OFFSET]);
+ return error;
+}
+
+static int set_report(struct i2c_client *client, u8 mode, u8 data)
+{
+ int error;
+ u8 buf[10] = {0x94, 0x01, 0x34, 0x03, 0x96, 0x01, 0x04, 0x00,};
+
+ buf[2] = 0x30 | (mode & 0x0F);
+ buf[8] = mode;
+ buf[9] = data;
+
+ error = zinitix_i2c_write_buf(client, buf, 10);
+
+ if (error)
+ dev_err(&client->dev, "set report desc fail: %d\n", error);
+
+ return error;
+}
+
+static int get_mode(struct i2c_client *client, int *data)
+{
+ int error;
+ u8 val[4];
+ u8 buf[6] = {0x94, 0x01, 0x32, 0x04, 0x96, 0x01 };
+
+ error = zinitix_i2c_read_buf(client, buf, 6, val, 4);
+ if (error)
+ dev_err(&client->dev, "### Get Mode : %d", (int)val[3]);
+ else
+ *data = val[3];
+ return error;
+}
+
+static int zinitix_i2c_initialize(struct i2c_client *client)
+{
+ int error, mode;
+ u8 val[512];
+
+ //Sleep
+ error = zinitix_sleep_control(client, ZINITIX_SLEEP);
+ if (error)
+ return error;
+ //Get HID Descriptor
+ error = get_descriptor(client, val);
+ if (error)
+ return error;
+ //HID_CMD_WAKEUP
+ error = zinitix_sleep_control(client, ZINITIX_WAKE_UP);
+ if (error)
+ return error;
+ //HID_CMD_RESET
+ error = zinitix_reset(client);
+ if (error)
+ return error;
+ //Get HID Report Descriptor
+ error = get_report_descriptor(client);
+ if (error)
+ return error;
+ //Get Mode
+ error = get_mode(client, &mode);
+ if (error)
+ return error;
+ //CMD
+ error = set_report(client, REPORT_SWITCH, SWITCH_BOTH);
+ if (error)
+ return error;
+ error = set_report(client, REPORT_INPUT, INPUT_PTP);
+ if (error)
+ return error;
+ error = set_report(client, REPORT_LATENCY, LATENCY_NORMAL);
+ if (error)
+ return error;
+ return 0;
+}
+
+static int zinitix_i2c_get_max(struct i2c_client *client,
+ unsigned int *max_x, unsigned int *max_y)
+{
+ int error;
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_MAX_X_REG, (u16 *)max_x);
+ if (error) {
+ dev_err(&client->dev, "failed to get X dimension: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_MAX_Y_REG, (u16 *)max_y);
+ if (error) {
+ dev_err(&client->dev, "failed to get Y dimension: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_get_num_channel(struct i2c_client *client,
+ unsigned short *chennel_x,
+ unsigned short *chennel_y)
+{
+ int error;
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_CH_X_REG, chennel_x);
+ if (error) {
+ dev_err(&client->dev, "failed to get CH X: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_CH_Y_REG, chennel_y);
+ if (error) {
+ dev_err(&client->dev, "failed to get CH Y: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_prepare_fw_update(struct i2c_client *client)
+{
+ u16 u16_lsb, u16_msb;
+ u16 Bootloader_ver;
+ u16 ver_major, ver_minor, ver_rel;
+ u32 info_checksum;
+ u32 core_checksum;
+ int error = 0;
+
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MAJOR, &ver_major);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &ver_minor);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE, &ver_rel);
+
+ //get Checksum
+ error = zinitix_i2c_read_reg(client, 0x00E4, &u16_lsb);
+ error = zinitix_i2c_read_reg(client, 0x00E5, &u16_msb);
+ info_checksum = (u16_msb<<16) | u16_lsb;
+
+ error = zinitix_i2c_read_reg(client, 0x00E6, &u16_lsb);
+ error = zinitix_i2c_read_reg(client, 0x00E7, &u16_msb);
+ core_checksum = (u16_msb<<16) | u16_lsb;
+
+ error = zinitix_i2c_write_reg(client, FWUPGRADE_MODE, 0x0001);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE,
&Bootloader_ver);
+
+ error = zinitix_i2c_write_reg(client, FWUPGRADE_MODE, 0x0002);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE,
&Bootloader_ver);
+
+ //init download
+ zinitix_i2c_write_reg(client, VENDOR_CMD_ENABLE, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, INIT_NVM, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, DISABLE_NVM_WP, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+
+ return 0;
+}
+
+static int zinitix_i2c_read_fw_block(struct i2c_client *client,
+ u8 *page, int idx)
+{
+ struct device *dev = &client->dev;
+ int ret, error;
+
+ ret = zinitix_i2c_read_data(client, FWUPGRADE_READ, page);
+ if (ret != 0) {
+ dev_err(dev, "Failed to read page %d: %d\n", idx, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_write_fw_block(struct i2c_client *client,
+ const u8 *page, u16 checksum, int idx)
+{
+ struct device *dev = &client->dev;
+ int ret, error;
+
+ ret = zinitix_i2c_write_fwdata(client, FWUPGRADE_PGM, page, checksum);
+ if (ret != 0) {
+ dev_err(dev, "Failed to write page %d: %d\n", idx, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_finish_fw_update(struct i2c_client *client,
+ struct completion *completion)
+{
+ struct device *dev = &client->dev;
+ int error;
+ u16 ver_major, ver_minor, ver_rel;
+ u16 retry_cnt = 100;
+ u16 checksum = 0, temp = 0, value = 0;
+
+ enable_irq(client->irq);
+
+ error = zinitix_i2c_write_reg(client, HW_RESET, 0);
+ if (error)
+ dev_err(dev, "device reset failed: %d\n", error);
+
+ msleep(1500);
+
+ disable_irq(client->irq);
+
+ if (error) {
+ dev_err(dev, "fw_update Fail :%d", error);
+ return error;
+ }
+
+ //Touchpad Mode Enter
+ error = zinitix_i2c_read_reg(client, 0x10, &value);
+ if (error) {
+ dev_err(dev, "zinitix_i2c_read_reg reg: 0x10 err: %d\n", error);
+ return error;
+ }
+ msleep(20);
+
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MAJOR, &ver_major);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &ver_minor);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE, &ver_rel);
+ error = zinitix_i2c_read_reg(client, REG_FWCHECKSUM, &checksum);
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ if (error) {
+ dev_err(dev, "write[0x00F0][0x2000] err: %d\n", error);
+ return error;
+ }
+
+ while (retry_cnt-- > 0) {
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ if (error) {
+ dev_err(dev, "write[0x00F0],[0x2000] err: %d\n", error);
+ return error;
+ }
+ error = zinitix_i2c_read_reg(client, 0x00F0, &temp);
+ if (error) {
+ dev_err(dev, "read[0x00F0] err: %d\n", error);
+ return error;
+ }
+ if (temp == 0x2000)
+ break;
+ }
+
+ zinitix_i2c_write_reg(client, 0x13F0, 0x0001);
+
+ if (retry_cnt > 0) {
+ const u8 DataBuf[2] = {0xDA, 0xCA};
+
+ zinitix_i2c_write_data(client, 0x0006, DataBuf, 0x0002);
+ msleep(50);
+ retry_cnt = 100;
+ while (retry_cnt-- > 0) {
+ error = zinitix_i2c_read_reg(client, 0x0018, &temp);
+ if (error) {
+ dev_err(dev, "read 0x0018, err: %d\n", error);
+ return error;
+ }
+ if (temp == 0xFFFE)
+ break;
+ msleep(20);
+ }
+
+ if (retry_cnt > 0) {
+ //save_cal_data
+ zinitix_i2c_write_reg(client, 0x0008, 0x0000);
+ msleep(500);
+ //Interrupt Enable
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+
+ retry_cnt = 100;
+ while (retry_cnt-- > 0) {
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+ zinitix_i2c_read_reg(client, 0x00F0, &temp);
+ if (temp == 0x880F)
+ break;
+ }
+
+ if (retry_cnt > 0) {
+ zinitix_i2c_read_reg(client, 0x0018, &temp);
+ dev_err(dev, "HW_calibration done(0x%X)\n",
temp);
+ }
+ }
+ }
+
+ zinitix_i2c_write_reg(client, 0x13F0, 0x0000); //NVM Write Disable
+
+ return 0;
+}
+
+static int zinitix_i2c_get_report(struct i2c_client *client, u8 *report)
+{
+ int len;
+
+ len = i2c_master_recv(client, report, ZINITIX_I2C_REPORT_LEN);
+ if (len < 0) {
+ dev_err(&client->dev, "failed to read report data: %d\n", len);
+ return len;
+ }
+
+ if (len != ZINITIX_I2C_REPORT_LEN) {
+ dev_err(&client->dev,
+ "wrong report length (%d vs %d expected)\n",
+ len, ZINITIX_I2C_REPORT_LEN);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+const struct zinitix_transport_ops zinitix_i2c_ops = {
+ .initialize = zinitix_i2c_initialize,
+ .sleep_control = zinitix_sleep_control,
+ .reset = zinitix_reset,
+ .get_max = zinitix_i2c_get_max,
+ .get_num_channel = zinitix_i2c_get_num_channel,
+ .prepare_fw_update = zinitix_i2c_prepare_fw_update,
+ .write_fw_block = zinitix_i2c_write_fw_block,
+ .read_fw_block = zinitix_i2c_read_fw_block,
+ .finish_fw_update = zinitix_i2c_finish_fw_update,
+ .get_report = zinitix_i2c_get_report,
+};
+
+static int zinitix_enable_power(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error = regulator_enable(data->vcc);
+
+ if (error) {
+ dev_err(&data->client->dev,
+ "failed to enable regulator: %d\n", error);
+ return error;
+ }
+
+ do {
+ error = data->ops->sleep_control(data->client, true);
+ if (error >= 0)
+ return 0;
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ dev_err(&data->client->dev, "failed to enable power: %d\n", error);
+ return error;
+}
+
+static int zinitix_disable_power(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error = 0;
+
+ do {
+ error = data->ops->sleep_control(data->client, false);
+ if (!error) {
+ error = regulator_disable(data->vcc);
+ if (error) {
+ dev_err(&data->client->dev,
+ "failed to disable regulator: %d\n",
+ error);
+ /* Attempt to power the chip back up */
+ data->ops->sleep_control(data->client, true);
+ break;
+ }
+
+ return 0;
+ }
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ dev_err(&data->client->dev, "failed to disable power: %d\n", error);
+ return error;
+}
+
+static int zinitix_sleep(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error;
+
+ do {
+ error = data->ops->sleep_control(data->client, true);
+ if (!error)
+ return 0;
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ return error;
+}
+
+static int zinitix_initialize(struct touchpad_data *data)
+{
+ struct i2c_client *client = data->client;
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error;
+
+ do {
+ error = data->ops->initialize(client);
+ if (!error)
+ return 0;
+
+ dev_err(&client->dev, "device initialize failed: %d\n", error);
+ msleep(30);
+ } while (--repeat > 0);
+
+ return error;
+}
+
+static unsigned int zinitix_get_resolution(u16 val)
+{
+ return (val * 10 + 300) * 10 / 254;
+}
+
+static int zinitix_query_device_parameters(struct touchpad_data *data)
+{
+ unsigned short ch_x, ch_y;
+ int error;
+
+ error = data->ops->get_max(data->client, &data->max_x, &data->max_y);
+ if (error)
+ return error;
+
+ error = data->ops->get_num_channel(data->client, &ch_x, &ch_y);
+ if (error)
+ return error;
+
+ data->width_x = data->max_x / ch_x;
+ data->width_y = data->max_y / ch_y;
+
+ data->x_res = zinitix_get_resolution(data->max_x / data->phy_x);
+ data->y_res = zinitix_get_resolution(data->max_y / data->phy_y);
+
+ //pressure level
+ data->pressure_adjustment = 0x0011;
+ return 0;
+}
+
+/*
+ **********************************************************
+ * firmware update
+ **********************************************************
+ */
+static int zinitix_read_fw_block(struct touchpad_data *data,
+ u8 *page, int idx)
+{
+ int error;
+ int retry = ZINITIX_RETRY_COUNT;
+
+ do {
+ error = data->ops->read_fw_block(data->client, page, idx);
+ if (!error)
+ return 0;
+
+ dev_dbg(&data->client->dev,
+ "retrying read page %d (error: %d)\n", idx, error);
+
+ } while (--retry > 0);
+
+ return error;
+}
+
+static int zinitix_write_fw_block(struct touchpad_data *data,
+ const u8 *page, u16 checksum, int idx)
+{
+ int error;
+ int retry = ZINITIX_RETRY_COUNT;
+
+ do {
+ error = data->ops->write_fw_block(data->client, page, checksum,
idx);
+ if (!error)
+ return 0;
+
+ dev_dbg(&data->client->dev,
+ "retrying write page %d (error: %d)\n", idx, error);
+ } while (--retry > 0);
+
+ return error;
+}
+
+static int get_fw_sizeinfo(const struct firmware *fw, struct fw_info *info)
+{
+ union nvm_binary_info *bin_info = (union nvm_binary_info *)&fw->data[0];
+
+ info->info_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.info_size[1],
+ bin_info->val.info_size[2],
+ bin_info->val.info_size[3]);
+ info->core_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.core_size[1],
+ bin_info->val.core_size[2],
+ bin_info->val.core_size[3]);
+ info->cust_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.custom_size[1],
+ bin_info->val.custom_size[2],
+ bin_info->val.custom_size[3]);
+ info->regi_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.register_size[1],
+ bin_info->val.register_size[2],
+ bin_info->val.register_size[3]);
+
+ info->end_address = info->info_size + info->core_size + info->cust_size
+ info->regi_size;
+ info->start_address = info->info_size + info->core_size;
+ return 0;
+}
+
+static int zinitix_flash_erase(struct i2c_client *client, int flash_addr)
+{
+ u8 data[4] = {0x00, 0x00, 0x00, 0x00};
+ int i = 0;
+
+ for (i = flash_addr; i < 32; i++) {
+ data[2] = i;
+ zinitix_i2c_write_data(client, FWUPGRADE_BLOCK_ERASE, data, 4);
+ msleep(60);
+ }
+
+ data[0] = 1;
+ for (i = 1; i < 4; i++) {
+ data[2] = i;
+ zinitix_i2c_write_data(client, FWUPGRADE_BLOCK_ERASE, data, 4);
+ msleep(60);
+ }
+
+ return 0;
+}
+
+static int __zinitix_update_firmware(struct touchpad_data *data,
+ const struct firmware *fw)
+{
+ struct i2c_client *client = data->client;
+ struct device *dev = &client->dev;
+ int i, error, page_size;
+ int fw_addr;
+ struct fw_info flash;
+
+ page_size = 1024;
+ error = data->ops->prepare_fw_update(client);
+ if (error) {
+ dev_err(dev, "prepare fw upadate err:%d\n", error);
+ return error;
+ }
+
+ //get firmware info
+ get_fw_sizeinfo(fw, &flash);
+ zinitix_flash_erase(client, flash.start_address);
+
+ //write firmware
+ fw_addr = (flash.info_size + flash.core_size) / 1024;
+
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+ zinitix_i2c_write_reg(client, FWUPGRADE_START_PAGE, fw_addr);
+ for (fw_addr = flash.start_address; fw_addr < flash.end_address; ) {
+ for (i = 0; i < page_size / SECTOR_SZ; i++) {
+ error = zinitix_write_fw_block(data,
&fw->data[fw_addr], SECTOR_SZ, i);
+ if (error) {
+ dev_err(dev, "fw write %d err:%d\n", i, error);
+ return error;
+ }
+
+ fw_addr += SECTOR_SZ;
+ }
+ msleep(20);
+ }
+
+ fw_addr = (flash.info_size + flash.core_size) / 1024;
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+ zinitix_i2c_write_reg(client, FWUPGRADE_START_PAGE, fw_addr);
+ msleep(20);
+
+ //verify
+ fw_addr = flash.start_address;
+ for (; fw_addr < flash.end_address; ) {
+ u8 verify[16] = {0,};
+
+ for (i = 0; i < page_size / SECTOR_SZ; i++) {
+ zinitix_read_fw_block(data, verify, i);
+ if (error) {
+ dev_err(dev, "err verify read : %d\n", error);
+ return error;
+ }
+
+ if (memcmp(&fw->data[fw_addr], verify, SECTOR_SZ)) {
+ dev_err(dev, "err verify cmp : %d\n", error);
+ return error;
+ }
+
+ fw_addr += SECTOR_SZ;
+ }
+ } //verify success
+
+ //complete fw update
+ error = data->ops->finish_fw_update(client, &data->fw_completion);
+ if (error) {
+ dev_err(dev, "err finish_fw_update: %d\n", error);
+ return error;
+ }
+ return 0;
+}
+
+static int zinitix_update_firmware(struct touchpad_data *data,
+ const struct firmware *fw)
+{
+ int retval = 0;
+ struct i2c_client *client = data->client;
+
+ disable_irq(client->irq);
+ data->in_fw_update = true;
+ zinitix_i2c_write_reg(client, 0xff, 0x01);
+ retval = __zinitix_update_firmware(data, fw);
+ if (retval) {
+ dev_err(&client->dev, "fw update failed: %d\n", retval);
+ data->ops->reset(client);
+ } else {
+ /* Reinitialize TP after fw is updated */
+ zinitix_initialize(data);
+ dev_err(&client->dev, "fw update Success!!!: %d\n", retval);
+ }
+
+ data->in_fw_update = false;
+ enable_irq(client->irq);
+
+ return retval;
+}
+
+//probe or init
+static int zinitix_check_update_firmware(struct device *dev)
+{
+ int retval = 0;
+ int error = 0;
+ char *fw_name;
+ union nvm_binary_info *fw_info;
+ const struct firmware *fw;
+ u16 fw_ver = 0;
+ u16 dev_ver = 0;
+
+ struct i2c_client *client = to_i2c_client(dev);
+
+ fw_name = kasprintf(GFP_KERNEL, ZINITIX_FW_NAME);
+ if (!fw_name) {
+ dev_err(dev, "failed to allocate memory for firmware name\n");
+ return -ENOMEM;
+ }
+
+
+ //1. Check FW Bin file
+ error = request_firmware(&fw, fw_name, dev); //linux Kernel API
+ kfree(fw_name);
+ if (error) {
+ dev_err(dev, "failed to request firmware: %d\n", error);
+ return error;
+ }
+
+ //2. Check FW version
+ fw_info = (union nvm_binary_info *)&fw[0];
+ fw_ver = fw_info->val.minor_ver;
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &dev_ver);
+
+ if (dev_ver <= fw_ver) { //3. Current Version < New Version
+ dev_info(dev, "check FW[0x%X : 0x%X] boot!\n", fw_ver, dev_ver);
+ } else {
+ dev_info(dev, "checked No Firmware in boot Sequence T_T\n");
+ }
+
+ release_firmware(fw);
+ return retval;
+}
+
+/*
+ *********
+ * SYSFS
+ */
+static ssize_t update_fw_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct touchpad_data *data = dev_get_drvdata(dev);
+ const struct firmware *fw;
+ char *fw_name;
+ int error;
+
+ fw_name = kasprintf(GFP_KERNEL, ZINITIX_FW_NAME);
+ if (!fw_name) {
+ dev_err(dev, "failed to allocate memory for firmware name\n");
+ return -ENOMEM;
+ }
+
+ error = request_firmware(&fw, fw_name, dev); //linux Kernel API
+ kfree(fw_name);
+ if (error) {
+ dev_err(dev, "failed to request firmware: %d\n", error);
+ return error;
+ }
+
+ error = mutex_lock_interruptible(&data->sysfs_mutex);
+ if (error)
+ goto out_release_fw;
+
+ error = zinitix_update_firmware(data, fw);
+
+ mutex_unlock(&data->sysfs_mutex);
+
+out_release_fw:
+ release_firmware(fw);
+ return error ?: count;
+}
+
+static DEVICE_ATTR_WO(update_fw);
+
+static ssize_t send_data_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ u16 cmd, reg_addr, reg_val;
+ int error, nsize = 0;
+
+ cmd = (buf[0]&0x00FF) | (buf[1]<<8 & 0xFF00);
+ reg_addr = (buf[2]&0x00FF) | (buf[3]<<8 & 0xFF00);
+
+ switch (cmd) {
+ case WRITE_REG:
+ reg_val = (buf[4]&0x00FF) | (buf[5]<<8 & 0xFF00);
+ zinitix_i2c_write_reg(client, reg_addr, reg_val);
+ break;
+
+ case READ_REG:
+ nsize = count + 2;
+ if (nsize >= 512)
+ nsize = 512;
+ memset(data->userbuffer, 0, nsize);
+ zinitix_i2c_read_reg(client, reg_addr, ®_val);
+ data->userbuffer[0] = reg_val & 0xFF;
+ data->userbuffer[1] = (reg_val>>8) & 0xFF;
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case VENDOR_COMMAND_READ:
+ nsize = count + 2;
+ memset(data->userbuffer, 0, nsize);
+ zinitix_i2c_read_data(client, reg_addr, data->userbuffer);
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case VENDOR_COMMAND_WRITE:
+ zinitix_i2c_write_data(client, reg_addr, &buf[sizeof(u16)*2],
count);
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case FIRMWARE_WRITE:
+ zinitix_write_fw_block(data, &buf[2], SECTOR_SZ, 0);
+ break;
+
+ case DEVICE_INIT:
+ error = data->ops->initialize(client);
+ if (error) {
+ dev_err(&client->dev, "dev init failed: %d\n", error);
+ return error;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return count;
+}
+static DEVICE_ATTR_WO(send_data);
+
+static ssize_t recv_data_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int size = 0;
+
+ u16 cmd = (buf[0]&0x00FF) | (buf[1]<<8 & 0xFF00);
+
+ switch (cmd) {
+ case GET_INFO_CHIPID:
+ memcpy(buf, &data->chip_code, sizeof(u16));
+ break;
+ default:
+ break;
+ }
+
+ size = data->recv_data_size;
+ data->userbuffer[size] = '\0';
+
+ memcpy(buf, data->userbuffer, size);
+
+ data->ready_userbuffer = false;
+ return size;
+}
+
+static DEVICE_ATTR_RO(recv_data);
+
+static struct attribute *zinitix_sysfs_entries[] = {
+ &dev_attr_update_fw.attr,
+ &dev_attr_send_data.attr,
+ &dev_attr_recv_data.attr,
+ NULL,
+};
+
+static const struct attribute_group zinitix_sysfs_group = {
+ .attrs = zinitix_sysfs_entries,
+};
+
+static const struct attribute_group *zinitix_sysfs_groups[] = {
+ &zinitix_sysfs_group,
+ NULL
+};
+
+/*
+ **************
+ * Zinitix isr
+ */
+
+static void zinitix_report_contact(struct touchpad_data *data, int
contact_num, bool contact_valid, u8 *finger_data)
+{
+ struct input_dev *input = data->input;
+ unsigned int pos_x, pos_y;
+ unsigned int mk_x, mk_y;
+ unsigned int area_x, area_y, major, minor;
+
+ if (contact_valid) {
+ pos_x = finger_data[0] | finger_data[1] << 8;
+ pos_y = finger_data[2] | finger_data[3] << 8;
+
+ mk_x = mk_y = 0x2; //임의값으로 테스트 후 제거
+
+ if (pos_x > data->max_x || pos_y > data->max_y) {
+ dev_dbg(input->dev.parent,
+ "[%d] x=%d y=%d over max (%d, %d)",
+ contact_num, pos_x, pos_y,
+ data->max_x, data->max_y);
+ return;
+ }
+
+ area_x = mk_x * (data->width_x - ZINITIX_FWIDTH_REDUCE);
+ area_y = mk_y * (data->width_y - ZINITIX_FWIDTH_REDUCE);
+
+ major = max(area_x, area_y);
+ minor = min(area_x, area_y);
+
+ input_mt_slot(input, contact_num);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
+ input_report_abs(input, ABS_MT_POSITION_X, pos_x);
+ input_report_abs(input, ABS_MT_POSITION_Y, pos_y);
+ input_report_abs(input, ABS_MT_PRESSURE, ZINITIX_TP_PRESS);
+ input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
+ input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
+ } else {
+ input_mt_slot(input, contact_num);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
+ }
+}
+
+static void zinitix_report_absolute(struct touchpad_data *data, u8 *packet,
bool lastPacket)
+{
+ struct input_dev *input = data->input;
+ u8 *finger_data = &packet[ZINITIX_FINGER_DATA_OFFSET];
+ u8 btn = packet[ZINITIX_BUTTON_OFFSET];
+ int contact_id;
+ struct zinitix_contact_status *contact_info;
+ bool contact_valid = true;
+
+ contact_info = (struct zinitix_contact_status *)&packet[3];
+
+ if (contact_info->confidence)
+ contact_valid = contact_info->tip;
+ else
+ contact_valid = false;
+
+ contact_id = (packet[3]>>2) + 1;
+ zinitix_report_contact(data, contact_id, contact_valid, finger_data);
+
+ if (true == lastPacket) {
+ input_report_key(input, BTN_LEFT, (btn) & 0x01);
+ input_report_abs(input, ABS_DISTANCE, false);
+ input_mt_report_pointer_emulation(input, true);
+ input_sync(input);
+ }
+}
+
+static irqreturn_t zinitix_isr(int irq, void *dev_id)
+{
+ struct touchpad_data *data = dev_id;
+ struct device *dev = &data->client->dev;
+ int error;
+ int isrCnt;
+ u8 report[ZINITIX_MAX_REPORT_LEN];
+ bool lastPacket = false;
+
+ if (data->in_fw_update) {
+ complete(&data->fw_completion);
+ goto out;
+ }
+
+ do {
+ error = data->ops->get_report(data->client, report);
+ if (error)
+ goto out;
+ if (report[ZINITIX_REPORT_ID_OFFSET] == ZINITIX_REPORT_ID) {
+ if (report[10] > 0)
+ isrCnt = report[10];
+
+ isrCnt--;
+
+ if (isrCnt <= 0)
+ lastPacket = true;
+
+ zinitix_report_absolute(data, report, lastPacket);
+ } else {
+ dev_err(dev, "Exception (ID : 0x%x)!!\n",
report[ZINITIX_REPORT_ID_OFFSET]);
+ goto out;
+ }
+ } while (isrCnt > 0);
+out:
+ return IRQ_HANDLED;
+}
+
+/*
+ ***************
+ * Zinitix init
+ */
+static int zinitix_setup_input_device(struct touchpad_data *data)
+{
+ struct device *dev = &data->client->dev;
+ struct input_dev *input;
+ unsigned int max_width = max(data->width_x, data->width_y);
+ unsigned int min_width = min(data->width_x, data->width_y);
+ int error;
+ int finger_width = 15;
+
+ input = devm_input_allocate_device(dev);
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "Zinitix Touchpad";
+ input->id.bustype = BUS_I2C;
+ input->id.vendor = ZINITIX_VENDOR_ID;
+ input->id.product = data->product_id;
+ input_set_drvdata(input, data);
+
+ error = input_mt_init_slots(input, ZINITIX_MAX_FINGERS,
+ INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED);
+ if (error) {
+ dev_err(dev, "failed to initialize MT slots: %d\n", error);
+ return error;
+ }
+
+ __set_bit(EV_ABS, input->evbit);
+ __set_bit(INPUT_PROP_POINTER, input->propbit);
+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+ __set_bit(BTN_LEFT, input->keybit);
+
+ /* Set up ST parameters */
+ input_set_abs_params(input, ABS_X, 0, data->max_x, 0, 0);
+ input_set_abs_params(input, ABS_Y, 0, data->max_y, 0, 0);
+ input_abs_set_res(input, ABS_X, data->x_res);
+ input_abs_set_res(input, ABS_Y, data->y_res);
+ input_set_abs_params(input, ABS_PRESSURE, 0, ZINITIX_TP_PRESS, 0, 0);
+ input_set_abs_params(input, ABS_TOOL_WIDTH, 0, finger_width, 0, 0);
+ input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
+
+ /* And MT parameters */
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, data->max_x, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y, 0, data->max_y, 0, 0);
+ input_abs_set_res(input, ABS_MT_POSITION_X, data->x_res);
+ input_abs_set_res(input, ABS_MT_POSITION_Y, data->y_res);
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, ZINITIX_TP_PRESS, 0, 0);
+
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, finger_width *
max_width, 0, 0);
+
+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, finger_width *
min_width, 0, 0);
+
+ data->input = input;
+
+ return 0;
+}
+
+static void zinitix_disable_regulator(void *_data)
+{
+ struct touchpad_data *data = _data;
+
+ regulator_disable(data->vcc);
+}
+
+static void zinitix_remove_sysfs_groups(void *_data)
+{
+ struct touchpad_data *data = _data;
+
+ sysfs_remove_groups(&data->client->dev.kobj, zinitix_sysfs_groups);
+}
+
+static int zinitix_touchpad_probe(struct i2c_client *client,
+ const struct i2c_device_id *dev_id)
+{
+ const struct zinitix_transport_ops *transport_ops;
+ struct device *dev = &client->dev;
+ struct touchpad_data *data;
+ unsigned long irqflags;
+ int error;
+
+ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ transport_ops = &zinitix_i2c_ops;
+ } else {
+ dev_err(dev, "not a supported I2C/SMBus adapter\n");
+ return -EIO;
+ }
+ data = devm_kzalloc(dev, sizeof(struct touchpad_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ i2c_set_clientdata(client, data);
+
+ data->ops = transport_ops;
+ data->client = client;
+ data->userbuffer = kmalloc(1024, GFP_KERNEL);
+
+ init_completion(&data->fw_completion);
+ mutex_init(&data->sysfs_mutex);
+ data->vcc = devm_regulator_get(dev, "vcc");
+ if (IS_ERR(data->vcc)) {
+ error = PTR_ERR(data->vcc);
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get 'vcc' regulator: %d\n",
+ error);
+ return error;
+ }
+ error = regulator_enable(data->vcc);
+ if (error) {
+ dev_err(dev, "Failed to enable regulator: %d\n", error);
+ return error;
+ }
+ error = devm_add_action(dev, zinitix_disable_regulator, data);
+ if (error) {
+ regulator_disable(data->vcc);
+ dev_err(dev, "Failed to add disable regulator action: %d\n",
+ error);
+ return error;
+ }
+ /* Initialize the touchpad. */
+ error = zinitix_initialize(data);
+ if (error)
+ return error;
+ error = zinitix_check_update_firmware(dev);
+
+ error = zinitix_query_device_parameters(data);
+ if (error)
+ dev_err(&client->dev, "query_device_parameters Fail!!!");
+
+ error = zinitix_setup_input_device(data);
+ if (error)
+ return error;
+ irqflags = irq_get_trigger_type(client->irq);
+ if (!irqflags)
+ irqflags = IRQF_TRIGGER_FALLING;
+
+ error = devm_request_threaded_irq(dev, client->irq, NULL, zinitix_isr,
+ irqflags | IRQF_ONESHOT,
+ client->name, data);
+ if (error) {
+ dev_err(dev, "cannot register irq=%d\n", client->irq);
+ return error;
+ }
+ error = sysfs_create_groups(&dev->kobj, zinitix_sysfs_groups);
+ if (error) {
+ dev_err(dev, "failed to create sysfs attributes: %d\n", error);
+ return error;
+ }
+ error = devm_add_action(dev, zinitix_remove_sysfs_groups, data);
+ if (error) {
+ zinitix_remove_sysfs_groups(data);
+ dev_err(dev, "Failed to add sysfs cleanup action: %d\n",
+ error);
+ return error;
+ }
+ error = input_register_device(data->input);
+ if (error) {
+ dev_err(dev, "failed to register input device: %d\n", error);
+ return error;
+ }
+ if (!dev->of_node)
+ device_init_wakeup(dev, true);
+ return 0;
+}
+
+static int __maybe_unused zinitix_touchpad_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int ret;
+
+ ret = mutex_lock_interruptible(&data->sysfs_mutex);
+ if (ret)
+ return ret;
+
+ disable_irq(client->irq);
+
+ if (device_may_wakeup(dev)) {
+ ret = zinitix_sleep(data);
+ /* Enable wake from IRQ */
+ data->irq_wake = (enable_irq_wake(client->irq) == 0);
+ } else {
+ ret = zinitix_disable_power(data);
+ }
+
+ mutex_unlock(&data->sysfs_mutex);
+ return ret;
+}
+
+static int __maybe_unused zinitix_touchpad_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int error;
+
+ if (device_may_wakeup(dev) && data->irq_wake) {
+ disable_irq_wake(client->irq);
+ data->irq_wake = false;
+ }
+
+ error = zinitix_enable_power(data);
+ if (error) {
+ dev_err(dev, "power up when resuming failed: %d\n", error);
+ goto err;
+ }
+
+ error = zinitix_initialize(data);
+ if (error)
+ dev_err(dev, "initialize when resuming failed: %d\n", error);
+
+err:
+ enable_irq(data->client->irq);
+ return error;
+}
+
+static SIMPLE_DEV_PM_OPS(zinitix_pm_ops, zinitix_touchpad_suspend,
zinitix_touchpad_resume);
+
+static const struct i2c_device_id zinitix_touchpad_id[] = {
+ { ZINITIX_TOUCHPAD_DRIVER_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, zinitix_touchpad_id);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id zinitix_acpi_id[] = {
+{ "ZNT0002", 0 },
+{ "ZNT0003", 0 },
+{ "ZNT0004", 0 },
+{ "ZNT0005", 0 },
+{ "ZNT0006", 0 },
+{ "ZNT0007", 0 },
+{ "ZNT0008", 0 },
+{ "ZNT0009", 0 },
+{ "ZNT000A", 0 },
+{ "ACPI0C50", 0 },
+{ "PNP0C50", 0 },
+{ },
+};
+MODULE_DEVICE_TABLE(acpi, zinitix_acpi_id);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id zinitix_of_match[] = {
+ { .compatible = "zinitix, zntxtp" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, zinitix_of_match);
+#endif
+
+static struct i2c_driver zinitix_touchpad_driver = {
+ .driver = {
+ .name = ZINITIX_TOUCHPAD_DRIVER_NAME,
+ .pm = &zinitix_pm_ops,
+ .acpi_match_table = ACPI_PTR(zinitix_acpi_id),
+ .of_match_table = of_match_ptr(zinitix_of_match),
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .probe = zinitix_touchpad_probe,
+ .id_table = zinitix_touchpad_id,
+};
+
+module_i2c_driver(zinitix_touchpad_driver);
+
+MODULE_AUTHOR("<kd...@zinitix.com>");
+MODULE_DESCRIPTION("ZINITIX I2C Touchpad driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(ZINITIX_DRIVER_VERSION);
+
+
diff --git a/drivers/input/mouse/zinitix_i2c.h
b/drivers/input/mouse/zinitix_i2c.h
index e69de29bb2d1..c33dcdcaab00 100755
--- a/drivers/input/mouse/zinitix_i2c.h
+++ b/drivers/input/mouse/zinitix_i2c.h
@@ -0,0 +1,255 @@
+/*
+ * ZINITIX I2C Touchpad driver
+ *
+ * Copyright (c) 2020 ZINITIX Co.,Ltd
+ *
+ * Author: KwangDeok Son <kd...@zinitix.com>
+ *
+ * Based on cyapa driver:
+ * copyright (c) 2011-2013 ELAN Microelectronics Corp.
+ * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
+ * copyright (c) 2011-2012 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#ifndef _ZINITIX_I2C_H
+#define _ZINITIX_I2C_H
+
+#include <linux/types.h>
+
+#define ZINITIX_TOUCHPAD_DRIVER_NAME "zinitix_i2c_touchpad"
+#define ZINITIX_DRIVER_VERSION "1.0.0"
+#define ZINITIX_VENDOR_ID 0x14E5
+
+#define ZINITIX_TP_PRESS 128
+
+#define ZINITIX_FWIDTH_REDUCE 90
+#define ZINITIX_RETRY_COUNT 3
+
+#define ZINITIX_MAX_FINGERS 5
+#define ZINITIX_REPORT_ID 0x01
+#define ZINITIX_REPORT_ID_OFFSET 2
+#define ZINITIX_FINGER_DATA_OFFSET 4
+#define ZINITIX_BUTTON_OFFSET 11
+#define ZINITIX_MAX_REPORT_LEN 12
+
+
+#define ZINITIX_PTP_MODE 0x0001
+#define ZINITIX_DISABLE_POWER 0x0001
+
+#define ZINITIX_FW_NAME "zinitix_i2c_tp_fw.bin"
+
+/* Zinitix i2c commands */
+#define ZINITIX_MAX_X_REG 0x00C1 //Long dist
+#define ZINITIX_MAX_Y_REG 0x00C0 //short dist
+#define ZINITIX_CH_X_REG 0x0065
+#define ZINITIX_CH_Y_REG 0x0164
+#define ZINITIX_GET_DESC 0x000E
+#define ZINITIX_GET_REPORT_DESC 0x001E
+#define ZINITIX_REPORT_DESC_LENGTH 0x013E
+#define ZINITIX_PHY_X_OFFSET 0x009F
+#define ZINITIX_PHY_Y_OFFSET 0x00A9
+
+#define ZINITIX_STANDARD_CMD 0x0194
+#define ZINITIX_RESET 0x0100
+#define ZINITIX_WAKE_UP 0x0800
+#define ZINITIX_SLEEP 0x0801
+#define ZINITIX_I2C_POWER_CMD 0x0307
+
+#define ZINITIX_I2C_INF_LENGTH 2
+#define ZINITIX_I2C_REPORT_LEN 12
+#define ZINITIX_DESC_LENGTH 30
+
+
+#define WRITE_REG 0x0000
+#define READ_REG 0x0001
+#define VENDOR_COMMAND_READ 0x0002
+#define VENDOR_COMMAND_WRITE 0x0003
+#define FIRMWARE_WRITE 0x0004
+#define DEVICE_INIT 0x0005
+#define GET_INFO_CHIPID 0x0006
+
+#define REPORT_INPUT 0x04
+#define REPORT_SWITCH 0x09
+#define REPORT_LATENCY 0x0A
+
+
+#define INPUT_MOUSE 0x00
+#define INPUT_PTP 0x03
+
+#define SWITCH_NONE 0x00
+#define SWITCH_BUTTON 0x01
+#define SWITCH_SURFACE 0x02
+#define SWITCH_BOTH 0x03
+
+#define LATENCY_NORMAL 0x00
+#define LATENCY_HIGH 0x01
+
+struct i2c_client;
+struct completion;
+
+enum tp_mode {
+ IAP_MODE = 1,
+ MAIN_MODE
+};
+
+struct zinitix_contact_status {
+ u8 tip : 1;
+ u8 confidence : 1;
+ u8 contact_id : 1;
+ u8 reserved : 5;
+};
+
+struct zinitix_transport_ops {
+ int (*initialize)(struct i2c_client *client);
+ int (*sleep_control)(struct i2c_client *, u16 mode);
+ int (*set_mode)(struct i2c_client *client, u8 mode);
+
+ int (*get_max)(struct i2c_client *client,
+ unsigned int *max_x, unsigned int *max_y);
+ int (*get_num_channel)(struct i2c_client *client,
+ unsigned short *x_tracenum,
+ unsigned short *y_tracenum);
+
+ int (*reset)(struct i2c_client *client);
+
+ int (*prepare_fw_update)(struct i2c_client *client);
+ int (*write_fw_block)(struct i2c_client *client,
+ const u8 *page, u16 checksum, int idx);
+ int (*read_fw_block)(struct i2c_client *client,
+ u8 *page, int idx);
+ int (*finish_fw_update)(struct i2c_client *client,
+ struct completion *reset_done);
+
+ int (*get_report)(struct i2c_client *client, u8 *report);
+ int (*get_pressure_adjustment)(struct i2c_client *client,
+ int *adjustment);
+ int (*get_pattern)(struct i2c_client *client, u8 *pattern);
+};
+
+extern const struct zinitix_transport_ops zinitix_i2c_ops;
+
+#define TO_LITTLE_ENDIAN(n1, n2, n3) (((u32)n1<<16 & 0x00FF0000) | ((u32)n2<<8
& 0x0000FF00) | ((u32)n3 & 0x000000FF))
+#define SECTOR_SZ (8 * 2)
+#define FW_BUFF_SIZE (1024*48) // 48K
+#define FW_BUFF_SIZE_650 (1024*128) // 128K
+#define FW_REWRITE_LIMIT 8
+
+/* Zinitix i2c HID commands */
+#define FWUPGRADE_INIT 0x20F0
+#define FWUPGRADE_PGM 0x21F0
+#define FWUPGRADE_READ 0x22F0
+#define FWUPGRADE_MODE 0x25F0
+#define FWUPGRADE_WRITE_MODE 0x27F0
+#define FWUPGRADE_MERASE 0x28F0
+#define FWUPGRADE_START_PAGE 0x29F0
+#define FWUPGRADE_BLOCK_ERASE 0x2AF0
+
+#define HW_RESET 0x04F0
+
+#define REG_FWVERSION_MAJOR 0x0012
+#define REG_FWVERSION_MINOR 0x0121
+#define REG_FWVERSION_RELEASE 0x0013
+#define REG_FWCHECKSUM 0x012C
+
+#define VENDOR_CMD_ENABLE 0x10F0
+#define INIT_NVM 0x12F0
+#define DISABLE_NVM_WP 0x13F0
+
+
+enum FWUPGRADE_PROGMODE
+{
+ FWUPGRADE_PROGRAM = 0,
+ FWUPGRADE_ONLYWRITE = 1,
+ FWUPGRADE_WRITEREPEAT = 2,
+};
+
+union nvm_binary_info
+{
+ u16 buff16[128*1024/2];
+ u32 buff32[128*1024/4]; //128*1024byte
+ struct _val
+ {
+ u32 RESERVED0; // 0
+ u32 auto_boot_flag1; // 1
+ u32 auto_boot_flag2; // 2
+ u32 slave_addr_flag; // 3
+ u32 RESERVED1[4]; // 4
+ u32 info_checksum; // 8
+ u32 core_checksum; // 9
+ u32 custom_checksum; // 10
+ u32 register_checksum; // 11
+ u16 hw_id; // 12
+ u16 RESERVED2;
+ u16 major_ver; // 13
+ u16 RESERVED3;
+ u16 minor_ver; // 14
+ u16 RESERVED4;
+ u16 release_ver; // 15
+ u16 RESERVED5;
+ u16 chip_id; // 16
+ u16 chip_id_reverse;
+ u16 chip_naming_number; // 17
+ u16 RESERVED6[9];
+ u8 info_size[4]; // 21
+ u8 core_size[4]; // 22
+ u8 custom_size[4]; // 23
+ u8 register_size[4]; // 24
+ u8 total_size[4]; // 25
+ u32 RESERVED7[5]; // 26
+
+ u32 RESERVED8[32736]; // 32
+ }val;
+};
+
+struct fw_info {
+ u32 info_size;
+ u32 core_size;
+ u32 cust_size;
+ u32 regi_size;
+ u32 start_address;
+ u32 end_address;
+};
+
+/* The main device structure */
+
+struct touchpad_data {
+ struct i2c_client *client;
+ struct input_dev *input;
+ struct regulator *vcc;
+
+ const struct zinitix_transport_ops *ops;
+ /* for fw update */
+ struct completion fw_completion;
+ bool in_fw_update;
+ struct mutex sysfs_mutex;
+ unsigned int phy_x;
+ unsigned int phy_y;
+ unsigned int max_x;
+ unsigned int max_y;
+ unsigned int width_x;
+ unsigned int width_y;
+ unsigned int x_res;
+ unsigned int y_res;
+
+ u16 product_id;
+ int pressure_adjustment;
+ bool irq_wake;
+ u8 *userbuffer;
+ bool ready_userbuffer;
+ u16 recv_data_size;
+ u16 chip_code;
+};
+
+u16 zinitix_i2c_read_reg(struct i2c_client *client, u16 reg, u16 *value);
+u16 zinitix_i2c_read_data(struct i2c_client *client, u16 reg, u8 *verify_data);
+int zinitix_i2c_write_reg(struct i2c_client *client, u16 reg, u16 value);
+int zinitix_i2c_write_data(struct i2c_client *client, u16 reg, const u8*
value, u16 size);
+
+#endif /* _ZINITIX_I2C_H */
+
diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
index d8b6a5dab190..effd1b019b02 100644
--- a/drivers/input/mouse/Kconfig
+++ b/drivers/input/mouse/Kconfig
@@ -457,4 +457,15 @@ config MOUSE_NAVPOINT_PXA27x
To compile this driver as a module, choose M here: the
module will be called navpoint.
+config MOUSE_ZINITIX_I2C
+ tristate "ZINITIX I2C Touchpad support"
+ depends on I2C
+ help
+ This driver adds support for Zinitix I2C Touchpad.
+
+ Say Y here if you have a Zinitix I2C Touchpad.
+
+ To compile this driver as a module, choose M here: the module will be
+ called zinitix_i2c.
+
endif
diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
index e49f08565076..93ffa556a311 100644
--- a/drivers/input/mouse/Makefile
+++ b/drivers/input/mouse/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_MOUSE_SERIAL) += sermouse.o
obj-$(CONFIG_MOUSE_SYNAPTICS_I2C) += synaptics_i2c.o
obj-$(CONFIG_MOUSE_SYNAPTICS_USB) += synaptics_usb.o
obj-$(CONFIG_MOUSE_VSXXXAA) += vsxxxaa.o
+obj-$(CONFIG_MOUSE_ZINITIX_I2C) += zinitix_i2c.o
cyapatp-objs := cyapa.o cyapa_gen3.o cyapa_gen5.o cyapa_gen6.o
psmouse-objs := psmouse-base.o synaptics.o focaltech.o
diff --git a/drivers/input/mouse/zinitix_i2c.c
b/drivers/input/mouse/zinitix_i2c.c
index e69de29bb2d1..d441b1cb1274 100755
--- a/drivers/input/mouse/zinitix_i2c.c
+++ b/drivers/input/mouse/zinitix_i2c.c
@@ -0,0 +1,1491 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Zinitics I2C Touchpad driver
+ *
+ * Copyright (c) 2020 ZINITIX Co.,Ltd
+ *
+ * Author: KwangDeok Son <kd...@zinitix.com>
+ *
+ * Based on elan driver:
+ * Copyright (c) 2011-2013 ELAN Microelectronics Corp.
+ * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
+ * copyright (c) 2011-2012 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/input.h>
+#include <linux/uaccess.h>
+#include <linux/jiffies.h>
+#include <linux/completion.h>
+#include <linux/of.h>
+#include <asm/unaligned.h>
+
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/i2c.h>
+#include <linux/input/mt.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/regulator/consumer.h>
+#include "zinitix_i2c.h"
+
+static int zinitix_i2c_read(struct i2c_client *client, u16 reg, u8 *val, u16
len)
+{
+ __le16 buf[] = {
+ cpu_to_le16(reg),
+ };
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = sizeof(buf),
+ .buf = (u8 *)buf,
+ },
+ {
+ .addr = client->addr,
+ .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
+ .len = len,
+ .buf = val,
+ }
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
+}
+
+static int zinitix_i2c_write(struct i2c_client *client, u16 reg, u16 cmd)
+{
+ __le16 buf[] = {
+ cpu_to_le16(reg),
+ cpu_to_le16(cmd),
+ };
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = sizeof(buf),
+ .buf = (u8 *)buf,
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret != 1) {
+ if (ret >= 0)
+ ret = -EIO;
+ dev_err(&client->dev, "writing cmd (0x%04x) failed: %d\n", reg,
ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_read_buf(struct i2c_client *client, u8 *buf, u16
bufsize, u8 *val, u16 len)
+{
+ struct i2c_msg msgs[] = {
+ {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = bufsize,
+ .buf = buf,
+ },
+ {
+ .addr = client->addr,
+ .flags = (client->flags & I2C_M_TEN) | I2C_M_RD,
+ .len = len,
+ .buf = val,
+ }
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+
+ return ret == ARRAY_SIZE(msgs) ? 0 : (ret < 0 ? ret : -EIO);
+}
+
+static int zinitix_i2c_write_buf(struct i2c_client *client, u8 *buf, u8
bufsize)
+{
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = client->flags & I2C_M_TEN,
+ .len = bufsize,
+ .buf = buf,
+ };
+ int ret;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret != 1) {
+ if (ret >= 0)
+ ret = -EIO;
+ dev_err(&client->dev, "writing cmd (%s) failed: %d\n",
+ buf, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+int zinitix_i2c_write_reg(struct i2c_client *client, u16 reg, u16 value)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[6] = reg & 0xFF;
+ buf[7] = (reg>>8)&0xFF;
+ buf[8] = value & 0xFF;
+ buf[9] = (value>>8)&0xFF;
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+int zinitix_i2c_write_data(struct i2c_client *client, u16 reg, const u8
*value, u16 size)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[5] = size & 0xFF;
+ buf[6] = reg & 0xFF;
+ buf[7] = (reg>>8)&0xFF;
+ memcpy(&buf[8], value, size);
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+int zinitix_i2c_write_fwdata(struct i2c_client *client, u16 reg, const u8
*value, u16 size)
+{
+ int errno = 0;
+ u8 buf[22] = {0x80, 0x01, 0x14, 0x00, 0x06, 0x00, };
+
+ buf[5] = size & 0xFF;
+
+ memcpy(&buf[6], value, size);
+
+ errno = zinitix_i2c_write_buf(client, buf, 22);
+
+ return errno;
+}
+
+u16 zinitix_i2c_read_reg(struct i2c_client *client, u16 reg, u16 *value)
+{
+ u16 retval = 0;
+ u8 outBuf[26] = {0x94, 0x1, 0x26, 0x3, 0x96, 0x1, 0x14, 0, 0x6, 0x1, };
+ u8 inBuf[8] = {0, };
+
+ //Sample
+ outBuf[10] = reg & 0xFF;
+ outBuf[11] = (reg>>8)&0xFF;
+ //Send
+ retval = (u16)zinitix_i2c_write_buf(client, outBuf, 26);
+ //Recv
+ outBuf[2] = 0x16;
+ outBuf[3] = 0x02;
+ retval = (u16)zinitix_i2c_read_buf(client, outBuf, 6, inBuf, 8);
+ if (retval < 0) {
+ dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
+ return retval;
+ }
+
+ *value = (inBuf[6]&0xFF) | ((inBuf[7]<<8)&0xFF00);
+
+ return retval;
+}
+
+u16 zinitix_i2c_read_data(struct i2c_client *client, u16 reg, u8 *verify_data)
+{
+ u16 retval = 0;
+ u8 outBuf[26] = {0x94, 0x1, 0x26, 0x3, 0x96, 0x1, 0x14, 0, 0x6, 0x1, };
+ u8 inBuf[20] = {0, };
+
+ //Sample
+ outBuf[10] = reg & 0xFF;
+ outBuf[11] = (reg>>8)&0xFF;
+ //Send
+ retval = (u16)zinitix_i2c_write_buf(client, outBuf, 26);
+ //Recv
+ outBuf[2] = 0x16;
+ outBuf[3] = 0x02;
+ retval = (u16)zinitix_i2c_read_buf(client, outBuf, 6, inBuf, 20);
+ if (retval < 0) {
+ dev_err(&client->dev, "reading cmd (0x%04x) fail.\n", reg);
+ return retval;
+ }
+
+ memcpy(verify_data, &inBuf[4], SECTOR_SZ);
+
+ return retval;
+}
+
+static int zinitix_sleep_control(struct i2c_client *client, u16 mode)
+{
+ int error;
+
+ error = zinitix_i2c_write(client, ZINITIX_STANDARD_CMD, mode);
+ if (error)
+ dev_err(&client->dev, "device wake up failed: %d\n",
error);
+ else
+ msleep(100); /* Wait for the device to control */
+
+ return error;
+}
+
+static int zinitix_reset(struct i2c_client *client)
+{
+ int error;
+ u8 val[12];
+
+ error = zinitix_i2c_write(client, ZINITIX_STANDARD_CMD, ZINITIX_RESET);
+ if (error)
+ dev_err(&client->dev, "device reset failed: %d\n", error);
+ else {
+ msleep(100); /* Wait for the device to reset */
+
+ error = i2c_master_recv(client, val, 12);
+ if (error < 0) {
+ dev_err(&client->dev, "failed read reset response:
%d\n", error);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int get_descriptor(struct i2c_client *client, u8 *val)
+{
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int error;
+
+ error = zinitix_i2c_read(client, ZINITIX_GET_DESC, val,
ZINITIX_DESC_LENGTH);
+ if (error)
+ dev_err(&client->dev, "can't get descriptor: %d\n", error);
+ else
+ data->chip_code = (u16)(val[16] + (val[17]<<8));
+
+ return error;
+}
+
+static int get_report_descriptor(struct i2c_client *client)
+{
+ int error = 0;
+ u8 val[ZINITIX_REPORT_DESC_LENGTH] = {0,};
+ struct touchpad_data *data = i2c_get_clientdata(client);
+
+ //Get HID Report Descriptor
+ error = zinitix_i2c_read(client, ZINITIX_GET_REPORT_DESC, val,
sizeof(val));
+
+ //Get infomation to parse desc
+ data->phy_x = *((u16 *)&val[ZINITIX_PHY_X_OFFSET]);
+ data->phy_y = *((u16 *)&val[ZINITIX_PHY_Y_OFFSET]);
+ return error;
+}
+
+static int set_report(struct i2c_client *client, u8 mode, u8 data)
+{
+ int error;
+ u8 buf[10] = {0x94, 0x01, 0x34, 0x03, 0x96, 0x01, 0x04, 0x00,};
+
+ buf[2] = 0x30 | (mode & 0x0F);
+ buf[8] = mode;
+ buf[9] = data;
+
+ error = zinitix_i2c_write_buf(client, buf, 10);
+
+ if (error)
+ dev_err(&client->dev, "set report desc fail: %d\n", error);
+
+ return error;
+}
+
+static int get_mode(struct i2c_client *client, int *data)
+{
+ int error;
+ u8 val[4];
+ u8 buf[6] = {0x94, 0x01, 0x32, 0x04, 0x96, 0x01 };
+
+ error = zinitix_i2c_read_buf(client, buf, 6, val, 4);
+ if (error)
+ dev_err(&client->dev, "### Get Mode : %d", (int)val[3]);
+ else
+ *data = val[3];
+ return error;
+}
+
+static int zinitix_i2c_initialize(struct i2c_client *client)
+{
+ int error, mode;
+ u8 val[512];
+
+ //Sleep
+ error = zinitix_sleep_control(client, ZINITIX_SLEEP);
+ if (error)
+ return error;
+ //Get HID Descriptor
+ error = get_descriptor(client, val);
+ if (error)
+ return error;
+ //HID_CMD_WAKEUP
+ error = zinitix_sleep_control(client, ZINITIX_WAKE_UP);
+ if (error)
+ return error;
+ //HID_CMD_RESET
+ error = zinitix_reset(client);
+ if (error)
+ return error;
+ //Get HID Report Descriptor
+ error = get_report_descriptor(client);
+ if (error)
+ return error;
+ //Get Mode
+ error = get_mode(client, &mode);
+ if (error)
+ return error;
+ //CMD
+ error = set_report(client, REPORT_SWITCH, SWITCH_BOTH);
+ if (error)
+ return error;
+ error = set_report(client, REPORT_INPUT, INPUT_PTP);
+ if (error)
+ return error;
+ error = set_report(client, REPORT_LATENCY, LATENCY_NORMAL);
+ if (error)
+ return error;
+ return 0;
+}
+
+static int zinitix_i2c_get_max(struct i2c_client *client,
+ unsigned int *max_x, unsigned int *max_y)
+{
+ int error;
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_MAX_X_REG, (u16 *)max_x);
+ if (error) {
+ dev_err(&client->dev, "failed to get X dimension: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_MAX_Y_REG, (u16 *)max_y);
+ if (error) {
+ dev_err(&client->dev, "failed to get Y dimension: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_get_num_channel(struct i2c_client *client,
+ unsigned short *chennel_x,
+ unsigned short *chennel_y)
+{
+ int error;
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_CH_X_REG, chennel_x);
+ if (error) {
+ dev_err(&client->dev, "failed to get CH X: %d\n", error);
+ return error;
+ }
+
+ error = zinitix_i2c_read_reg(client, ZINITIX_CH_Y_REG, chennel_y);
+ if (error) {
+ dev_err(&client->dev, "failed to get CH Y: %d\n", error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_prepare_fw_update(struct i2c_client *client)
+{
+ u16 u16_lsb, u16_msb;
+ u16 Bootloader_ver;
+ u16 ver_major, ver_minor, ver_rel;
+ u32 info_checksum;
+ u32 core_checksum;
+ int error = 0;
+
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MAJOR, &ver_major);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &ver_minor);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE, &ver_rel);
+
+ //get Checksum
+ error = zinitix_i2c_read_reg(client, 0x00E4, &u16_lsb);
+ error = zinitix_i2c_read_reg(client, 0x00E5, &u16_msb);
+ info_checksum = (u16_msb<<16) | u16_lsb;
+
+ error = zinitix_i2c_read_reg(client, 0x00E6, &u16_lsb);
+ error = zinitix_i2c_read_reg(client, 0x00E7, &u16_msb);
+ core_checksum = (u16_msb<<16) | u16_lsb;
+
+ error = zinitix_i2c_write_reg(client, FWUPGRADE_MODE, 0x0001);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE,
&Bootloader_ver);
+
+ error = zinitix_i2c_write_reg(client, FWUPGRADE_MODE, 0x0002);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE,
&Bootloader_ver);
+
+ //init download
+ zinitix_i2c_write_reg(client, VENDOR_CMD_ENABLE, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, INIT_NVM, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, DISABLE_NVM_WP, 0x0001);
+ msleep(20);
+
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+
+ return 0;
+}
+
+static int zinitix_i2c_read_fw_block(struct i2c_client *client,
+ u8 *page, int idx)
+{
+ struct device *dev = &client->dev;
+ int ret, error;
+
+ ret = zinitix_i2c_read_data(client, FWUPGRADE_READ, page);
+ if (ret != 0) {
+ dev_err(dev, "Failed to read page %d: %d\n", idx, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_write_fw_block(struct i2c_client *client,
+ const u8 *page, u16 checksum, int idx)
+{
+ struct device *dev = &client->dev;
+ int ret, error;
+
+ ret = zinitix_i2c_write_fwdata(client, FWUPGRADE_PGM, page, checksum);
+ if (ret != 0) {
+ dev_err(dev, "Failed to write page %d: %d\n", idx, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int zinitix_i2c_finish_fw_update(struct i2c_client *client,
+ struct completion *completion)
+{
+ struct device *dev = &client->dev;
+ int error;
+ u16 ver_major, ver_minor, ver_rel;
+ u16 retry_cnt = 100;
+ u16 checksum = 0, temp = 0, value = 0;
+
+ enable_irq(client->irq);
+
+ error = zinitix_i2c_write_reg(client, HW_RESET, 0);
+ if (error)
+ dev_err(dev, "device reset failed: %d\n", error);
+
+ msleep(1500);
+
+ disable_irq(client->irq);
+
+ if (error) {
+ dev_err(dev, "fw_update Fail :%d", error);
+ return error;
+ }
+
+ //Touchpad Mode Enter
+ error = zinitix_i2c_read_reg(client, 0x10, &value);
+ if (error) {
+ dev_err(dev, "zinitix_i2c_read_reg reg: 0x10 err: %d\n", error);
+ return error;
+ }
+ msleep(20);
+
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MAJOR, &ver_major);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &ver_minor);
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_RELEASE, &ver_rel);
+ error = zinitix_i2c_read_reg(client, REG_FWCHECKSUM, &checksum);
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ if (error) {
+ dev_err(dev, "write[0x00F0][0x2000] err: %d\n", error);
+ return error;
+ }
+
+ while (retry_cnt-- > 0) {
+ error = zinitix_i2c_write_reg(client, 0x00F0, 0x2000);
+ if (error) {
+ dev_err(dev, "write[0x00F0],[0x2000] err: %d\n", error);
+ return error;
+ }
+ error = zinitix_i2c_read_reg(client, 0x00F0, &temp);
+ if (error) {
+ dev_err(dev, "read[0x00F0] err: %d\n", error);
+ return error;
+ }
+ if (temp == 0x2000)
+ break;
+ }
+
+ zinitix_i2c_write_reg(client, 0x13F0, 0x0001);
+
+ if (retry_cnt > 0) {
+ const u8 DataBuf[2] = {0xDA, 0xCA};
+
+ zinitix_i2c_write_data(client, 0x0006, DataBuf, 0x0002);
+ msleep(50);
+ retry_cnt = 100;
+ while (retry_cnt-- > 0) {
+ error = zinitix_i2c_read_reg(client, 0x0018, &temp);
+ if (error) {
+ dev_err(dev, "read 0x0018, err: %d\n", error);
+ return error;
+ }
+ if (temp == 0xFFFE)
+ break;
+ msleep(20);
+ }
+
+ if (retry_cnt > 0) {
+ //save_cal_data
+ zinitix_i2c_write_reg(client, 0x0008, 0x0000);
+ msleep(500);
+ //Interrupt Enable
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+
+ retry_cnt = 100;
+ while (retry_cnt-- > 0) {
+ zinitix_i2c_write_reg(client, 0x00F0, 0x880F);
+ zinitix_i2c_read_reg(client, 0x00F0, &temp);
+ if (temp == 0x880F)
+ break;
+ }
+
+ if (retry_cnt > 0) {
+ zinitix_i2c_read_reg(client, 0x0018, &temp);
+ dev_err(dev, "HW_calibration done(0x%X)\n",
temp);
+ }
+ }
+ }
+
+ zinitix_i2c_write_reg(client, 0x13F0, 0x0000); //NVM Write Disable
+
+ return 0;
+}
+
+static int zinitix_i2c_get_report(struct i2c_client *client, u8 *report)
+{
+ int len;
+
+ len = i2c_master_recv(client, report, ZINITIX_I2C_REPORT_LEN);
+ if (len < 0) {
+ dev_err(&client->dev, "failed to read report data: %d\n", len);
+ return len;
+ }
+
+ if (len != ZINITIX_I2C_REPORT_LEN) {
+ dev_err(&client->dev,
+ "wrong report length (%d vs %d expected)\n",
+ len, ZINITIX_I2C_REPORT_LEN);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+const struct zinitix_transport_ops zinitix_i2c_ops = {
+ .initialize = zinitix_i2c_initialize,
+ .sleep_control = zinitix_sleep_control,
+ .reset = zinitix_reset,
+ .get_max = zinitix_i2c_get_max,
+ .get_num_channel = zinitix_i2c_get_num_channel,
+ .prepare_fw_update = zinitix_i2c_prepare_fw_update,
+ .write_fw_block = zinitix_i2c_write_fw_block,
+ .read_fw_block = zinitix_i2c_read_fw_block,
+ .finish_fw_update = zinitix_i2c_finish_fw_update,
+ .get_report = zinitix_i2c_get_report,
+};
+
+static int zinitix_enable_power(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error = regulator_enable(data->vcc);
+
+ if (error) {
+ dev_err(&data->client->dev,
+ "failed to enable regulator: %d\n", error);
+ return error;
+ }
+
+ do {
+ error = data->ops->sleep_control(data->client, true);
+ if (error >= 0)
+ return 0;
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ dev_err(&data->client->dev, "failed to enable power: %d\n", error);
+ return error;
+}
+
+static int zinitix_disable_power(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error = 0;
+
+ do {
+ error = data->ops->sleep_control(data->client, false);
+ if (!error) {
+ error = regulator_disable(data->vcc);
+ if (error) {
+ dev_err(&data->client->dev,
+ "failed to disable regulator: %d\n",
+ error);
+ /* Attempt to power the chip back up */
+ data->ops->sleep_control(data->client, true);
+ break;
+ }
+
+ return 0;
+ }
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ dev_err(&data->client->dev, "failed to disable power: %d\n", error);
+ return error;
+}
+
+static int zinitix_sleep(struct touchpad_data *data)
+{
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error;
+
+ do {
+ error = data->ops->sleep_control(data->client, true);
+ if (!error)
+ return 0;
+
+ msleep(30);
+ } while (--repeat > 0);
+
+ return error;
+}
+
+static int zinitix_initialize(struct touchpad_data *data)
+{
+ struct i2c_client *client = data->client;
+ int repeat = ZINITIX_RETRY_COUNT;
+ int error;
+
+ do {
+ error = data->ops->initialize(client);
+ if (!error)
+ return 0;
+
+ dev_err(&client->dev, "device initialize failed: %d\n", error);
+ msleep(30);
+ } while (--repeat > 0);
+
+ return error;
+}
+
+static unsigned int zinitix_get_resolution(u16 val)
+{
+ return (val * 10 + 300) * 10 / 254;
+}
+
+static int zinitix_query_device_parameters(struct touchpad_data *data)
+{
+ unsigned short ch_x, ch_y;
+ int error;
+
+ error = data->ops->get_max(data->client, &data->max_x, &data->max_y);
+ if (error)
+ return error;
+
+ error = data->ops->get_num_channel(data->client, &ch_x, &ch_y);
+ if (error)
+ return error;
+
+ data->width_x = data->max_x / ch_x;
+ data->width_y = data->max_y / ch_y;
+
+ data->x_res = zinitix_get_resolution(data->max_x / data->phy_x);
+ data->y_res = zinitix_get_resolution(data->max_y / data->phy_y);
+
+ //pressure level
+ data->pressure_adjustment = 0x0011;
+ return 0;
+}
+
+/*
+ **********************************************************
+ * firmware update
+ **********************************************************
+ */
+static int zinitix_read_fw_block(struct touchpad_data *data,
+ u8 *page, int idx)
+{
+ int error;
+ int retry = ZINITIX_RETRY_COUNT;
+
+ do {
+ error = data->ops->read_fw_block(data->client, page, idx);
+ if (!error)
+ return 0;
+
+ dev_dbg(&data->client->dev,
+ "retrying read page %d (error: %d)\n", idx, error);
+
+ } while (--retry > 0);
+
+ return error;
+}
+
+static int zinitix_write_fw_block(struct touchpad_data *data,
+ const u8 *page, u16 checksum, int idx)
+{
+ int error;
+ int retry = ZINITIX_RETRY_COUNT;
+
+ do {
+ error = data->ops->write_fw_block(data->client, page, checksum,
idx);
+ if (!error)
+ return 0;
+
+ dev_dbg(&data->client->dev,
+ "retrying write page %d (error: %d)\n", idx, error);
+ } while (--retry > 0);
+
+ return error;
+}
+
+static int get_fw_sizeinfo(const struct firmware *fw, struct fw_info *info)
+{
+ union nvm_binary_info *bin_info = (union nvm_binary_info *)&fw->data[0];
+
+ info->info_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.info_size[1],
+ bin_info->val.info_size[2],
+ bin_info->val.info_size[3]);
+ info->core_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.core_size[1],
+ bin_info->val.core_size[2],
+ bin_info->val.core_size[3]);
+ info->cust_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.custom_size[1],
+ bin_info->val.custom_size[2],
+ bin_info->val.custom_size[3]);
+ info->regi_size = (u32)TO_LITTLE_ENDIAN(bin_info->val.register_size[1],
+ bin_info->val.register_size[2],
+ bin_info->val.register_size[3]);
+
+ info->end_address = info->info_size + info->core_size + info->cust_size
+ info->regi_size;
+ info->start_address = info->info_size + info->core_size;
+ return 0;
+}
+
+static int zinitix_flash_erase(struct i2c_client *client, int flash_addr)
+{
+ u8 data[4] = {0x00, 0x00, 0x00, 0x00};
+ int i = 0;
+
+ for (i = flash_addr; i < 32; i++) {
+ data[2] = i;
+ zinitix_i2c_write_data(client, FWUPGRADE_BLOCK_ERASE, data, 4);
+ msleep(60);
+ }
+
+ data[0] = 1;
+ for (i = 1; i < 4; i++) {
+ data[2] = i;
+ zinitix_i2c_write_data(client, FWUPGRADE_BLOCK_ERASE, data, 4);
+ msleep(60);
+ }
+
+ return 0;
+}
+
+static int __zinitix_update_firmware(struct touchpad_data *data,
+ const struct firmware *fw)
+{
+ struct i2c_client *client = data->client;
+ struct device *dev = &client->dev;
+ int i, error, page_size;
+ int fw_addr;
+ struct fw_info flash;
+
+ page_size = 1024;
+ error = data->ops->prepare_fw_update(client);
+ if (error) {
+ dev_err(dev, "prepare fw upadate err:%d\n", error);
+ return error;
+ }
+
+ //get firmware info
+ get_fw_sizeinfo(fw, &flash);
+ zinitix_flash_erase(client, flash.start_address);
+
+ //write firmware
+ fw_addr = (flash.info_size + flash.core_size) / 1024;
+
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+ zinitix_i2c_write_reg(client, FWUPGRADE_START_PAGE, fw_addr);
+ for (fw_addr = flash.start_address; fw_addr < flash.end_address; ) {
+ for (i = 0; i < page_size / SECTOR_SZ; i++) {
+ error = zinitix_write_fw_block(data,
&fw->data[fw_addr], SECTOR_SZ, i);
+ if (error) {
+ dev_err(dev, "fw write %d err:%d\n", i, error);
+ return error;
+ }
+
+ fw_addr += SECTOR_SZ;
+ }
+ msleep(20);
+ }
+
+ fw_addr = (flash.info_size + flash.core_size) / 1024;
+ zinitix_i2c_write_reg(client, FWUPGRADE_INIT, 0x0000);
+ zinitix_i2c_write_reg(client, FWUPGRADE_START_PAGE, fw_addr);
+ msleep(20);
+
+ //verify
+ fw_addr = flash.start_address;
+ for (; fw_addr < flash.end_address; ) {
+ u8 verify[16] = {0,};
+
+ for (i = 0; i < page_size / SECTOR_SZ; i++) {
+ zinitix_read_fw_block(data, verify, i);
+ if (error) {
+ dev_err(dev, "err verify read : %d\n", error);
+ return error;
+ }
+
+ if (memcmp(&fw->data[fw_addr], verify, SECTOR_SZ)) {
+ dev_err(dev, "err verify cmp : %d\n", error);
+ return error;
+ }
+
+ fw_addr += SECTOR_SZ;
+ }
+ } //verify success
+
+ //complete fw update
+ error = data->ops->finish_fw_update(client, &data->fw_completion);
+ if (error) {
+ dev_err(dev, "err finish_fw_update: %d\n", error);
+ return error;
+ }
+ return 0;
+}
+
+static int zinitix_update_firmware(struct touchpad_data *data,
+ const struct firmware *fw)
+{
+ int retval = 0;
+ struct i2c_client *client = data->client;
+
+ disable_irq(client->irq);
+ data->in_fw_update = true;
+ zinitix_i2c_write_reg(client, 0xff, 0x01);
+ retval = __zinitix_update_firmware(data, fw);
+ if (retval) {
+ dev_err(&client->dev, "fw update failed: %d\n", retval);
+ data->ops->reset(client);
+ } else {
+ /* Reinitialize TP after fw is updated */
+ zinitix_initialize(data);
+ dev_err(&client->dev, "fw update Success!!!: %d\n", retval);
+ }
+
+ data->in_fw_update = false;
+ enable_irq(client->irq);
+
+ return retval;
+}
+
+//probe or init
+static int zinitix_check_update_firmware(struct device *dev)
+{
+ int retval = 0;
+ int error = 0;
+ char *fw_name;
+ union nvm_binary_info *fw_info;
+ const struct firmware *fw;
+ u16 fw_ver = 0;
+ u16 dev_ver = 0;
+
+ struct i2c_client *client = to_i2c_client(dev);
+
+ fw_name = kasprintf(GFP_KERNEL, ZINITIX_FW_NAME);
+ if (!fw_name) {
+ dev_err(dev, "failed to allocate memory for firmware name\n");
+ return -ENOMEM;
+ }
+
+
+ //1. Check FW Bin file
+ error = request_firmware(&fw, fw_name, dev); //linux Kernel API
+ kfree(fw_name);
+ if (error) {
+ dev_err(dev, "failed to request firmware: %d\n", error);
+ return error;
+ }
+
+ //2. Check FW version
+ fw_info = (union nvm_binary_info *)&fw[0];
+ fw_ver = fw_info->val.minor_ver;
+ error = zinitix_i2c_read_reg(client, REG_FWVERSION_MINOR, &dev_ver);
+
+ if (dev_ver <= fw_ver) { //3. Current Version < New Version
+ dev_info(dev, "check FW[0x%X : 0x%X] boot!\n", fw_ver, dev_ver);
+ } else {
+ dev_info(dev, "checked No Firmware in boot Sequence T_T\n");
+ }
+
+ release_firmware(fw);
+ return retval;
+}
+
+/*
+ *********
+ * SYSFS
+ */
+static ssize_t update_fw_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct touchpad_data *data = dev_get_drvdata(dev);
+ const struct firmware *fw;
+ char *fw_name;
+ int error;
+
+ fw_name = kasprintf(GFP_KERNEL, ZINITIX_FW_NAME);
+ if (!fw_name) {
+ dev_err(dev, "failed to allocate memory for firmware name\n");
+ return -ENOMEM;
+ }
+
+ error = request_firmware(&fw, fw_name, dev); //linux Kernel API
+ kfree(fw_name);
+ if (error) {
+ dev_err(dev, "failed to request firmware: %d\n", error);
+ return error;
+ }
+
+ error = mutex_lock_interruptible(&data->sysfs_mutex);
+ if (error)
+ goto out_release_fw;
+
+ error = zinitix_update_firmware(data, fw);
+
+ mutex_unlock(&data->sysfs_mutex);
+
+out_release_fw:
+ release_firmware(fw);
+ return error ?: count;
+}
+
+static DEVICE_ATTR_WO(update_fw);
+
+static ssize_t send_data_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ u16 cmd, reg_addr, reg_val;
+ int error, nsize = 0;
+
+ cmd = (buf[0]&0x00FF) | (buf[1]<<8 & 0xFF00);
+ reg_addr = (buf[2]&0x00FF) | (buf[3]<<8 & 0xFF00);
+
+ switch (cmd) {
+ case WRITE_REG:
+ reg_val = (buf[4]&0x00FF) | (buf[5]<<8 & 0xFF00);
+ zinitix_i2c_write_reg(client, reg_addr, reg_val);
+ break;
+
+ case READ_REG:
+ nsize = count + 2;
+ if (nsize >= 512)
+ nsize = 512;
+ memset(data->userbuffer, 0, nsize);
+ zinitix_i2c_read_reg(client, reg_addr, ®_val);
+ data->userbuffer[0] = reg_val & 0xFF;
+ data->userbuffer[1] = (reg_val>>8) & 0xFF;
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case VENDOR_COMMAND_READ:
+ nsize = count + 2;
+ memset(data->userbuffer, 0, nsize);
+ zinitix_i2c_read_data(client, reg_addr, data->userbuffer);
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case VENDOR_COMMAND_WRITE:
+ zinitix_i2c_write_data(client, reg_addr, &buf[sizeof(u16)*2],
count);
+ data->ready_userbuffer = true;
+ data->recv_data_size = count;
+ break;
+
+ case FIRMWARE_WRITE:
+ zinitix_write_fw_block(data, &buf[2], SECTOR_SZ, 0);
+ break;
+
+ case DEVICE_INIT:
+ error = data->ops->initialize(client);
+ if (error) {
+ dev_err(&client->dev, "dev init failed: %d\n", error);
+ return error;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return count;
+}
+static DEVICE_ATTR_WO(send_data);
+
+static ssize_t recv_data_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int size = 0;
+
+ u16 cmd = (buf[0]&0x00FF) | (buf[1]<<8 & 0xFF00);
+
+ switch (cmd) {
+ case GET_INFO_CHIPID:
+ memcpy(buf, &data->chip_code, sizeof(u16));
+ break;
+ default:
+ break;
+ }
+
+ size = data->recv_data_size;
+ data->userbuffer[size] = '\0';
+
+ memcpy(buf, data->userbuffer, size);
+
+ data->ready_userbuffer = false;
+ return size;
+}
+
+static DEVICE_ATTR_RO(recv_data);
+
+static struct attribute *zinitix_sysfs_entries[] = {
+ &dev_attr_update_fw.attr,
+ &dev_attr_send_data.attr,
+ &dev_attr_recv_data.attr,
+ NULL,
+};
+
+static const struct attribute_group zinitix_sysfs_group = {
+ .attrs = zinitix_sysfs_entries,
+};
+
+static const struct attribute_group *zinitix_sysfs_groups[] = {
+ &zinitix_sysfs_group,
+ NULL
+};
+
+/*
+ **************
+ * Zinitix isr
+ */
+
+static void zinitix_report_contact(struct touchpad_data *data, int
contact_num, bool contact_valid, u8 *finger_data)
+{
+ struct input_dev *input = data->input;
+ unsigned int pos_x, pos_y;
+ unsigned int mk_x, mk_y;
+ unsigned int area_x, area_y, major, minor;
+
+ if (contact_valid) {
+ pos_x = finger_data[0] | finger_data[1] << 8;
+ pos_y = finger_data[2] | finger_data[3] << 8;
+
+ mk_x = mk_y = 0x2; //임의값으로 테스트 후 제거
+
+ if (pos_x > data->max_x || pos_y > data->max_y) {
+ dev_dbg(input->dev.parent,
+ "[%d] x=%d y=%d over max (%d, %d)",
+ contact_num, pos_x, pos_y,
+ data->max_x, data->max_y);
+ return;
+ }
+
+ area_x = mk_x * (data->width_x - ZINITIX_FWIDTH_REDUCE);
+ area_y = mk_y * (data->width_y - ZINITIX_FWIDTH_REDUCE);
+
+ major = max(area_x, area_y);
+ minor = min(area_x, area_y);
+
+ input_mt_slot(input, contact_num);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, true);
+ input_report_abs(input, ABS_MT_POSITION_X, pos_x);
+ input_report_abs(input, ABS_MT_POSITION_Y, pos_y);
+ input_report_abs(input, ABS_MT_PRESSURE, ZINITIX_TP_PRESS);
+ input_report_abs(input, ABS_TOOL_WIDTH, mk_x);
+ input_report_abs(input, ABS_MT_TOUCH_MAJOR, major);
+ input_report_abs(input, ABS_MT_TOUCH_MINOR, minor);
+ } else {
+ input_mt_slot(input, contact_num);
+ input_mt_report_slot_state(input, MT_TOOL_FINGER, false);
+ }
+}
+
+static void zinitix_report_absolute(struct touchpad_data *data, u8 *packet,
bool lastPacket)
+{
+ struct input_dev *input = data->input;
+ u8 *finger_data = &packet[ZINITIX_FINGER_DATA_OFFSET];
+ u8 btn = packet[ZINITIX_BUTTON_OFFSET];
+ int contact_id;
+ struct zinitix_contact_status *contact_info;
+ bool contact_valid = true;
+
+ contact_info = (struct zinitix_contact_status *)&packet[3];
+
+ if (contact_info->confidence)
+ contact_valid = contact_info->tip;
+ else
+ contact_valid = false;
+
+ contact_id = (packet[3]>>2) + 1;
+ zinitix_report_contact(data, contact_id, contact_valid, finger_data);
+
+ if (true == lastPacket) {
+ input_report_key(input, BTN_LEFT, (btn) & 0x01);
+ input_report_abs(input, ABS_DISTANCE, false);
+ input_mt_report_pointer_emulation(input, true);
+ input_sync(input);
+ }
+}
+
+static irqreturn_t zinitix_isr(int irq, void *dev_id)
+{
+ struct touchpad_data *data = dev_id;
+ struct device *dev = &data->client->dev;
+ int error;
+ int isrCnt;
+ u8 report[ZINITIX_MAX_REPORT_LEN];
+ bool lastPacket = false;
+
+ if (data->in_fw_update) {
+ complete(&data->fw_completion);
+ goto out;
+ }
+
+ do {
+ error = data->ops->get_report(data->client, report);
+ if (error)
+ goto out;
+ if (report[ZINITIX_REPORT_ID_OFFSET] == ZINITIX_REPORT_ID) {
+ if (report[10] > 0)
+ isrCnt = report[10];
+
+ isrCnt--;
+
+ if (isrCnt <= 0)
+ lastPacket = true;
+
+ zinitix_report_absolute(data, report, lastPacket);
+ } else {
+ dev_err(dev, "Exception (ID : 0x%x)!!\n",
report[ZINITIX_REPORT_ID_OFFSET]);
+ goto out;
+ }
+ } while (isrCnt > 0);
+out:
+ return IRQ_HANDLED;
+}
+
+/*
+ ***************
+ * Zinitix init
+ */
+static int zinitix_setup_input_device(struct touchpad_data *data)
+{
+ struct device *dev = &data->client->dev;
+ struct input_dev *input;
+ unsigned int max_width = max(data->width_x, data->width_y);
+ unsigned int min_width = min(data->width_x, data->width_y);
+ int error;
+ int finger_width = 15;
+
+ input = devm_input_allocate_device(dev);
+ if (!input)
+ return -ENOMEM;
+
+ input->name = "Zinitix Touchpad";
+ input->id.bustype = BUS_I2C;
+ input->id.vendor = ZINITIX_VENDOR_ID;
+ input->id.product = data->product_id;
+ input_set_drvdata(input, data);
+
+ error = input_mt_init_slots(input, ZINITIX_MAX_FINGERS,
+ INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED);
+ if (error) {
+ dev_err(dev, "failed to initialize MT slots: %d\n", error);
+ return error;
+ }
+
+ __set_bit(EV_ABS, input->evbit);
+ __set_bit(INPUT_PROP_POINTER, input->propbit);
+ __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
+ __set_bit(BTN_LEFT, input->keybit);
+
+ /* Set up ST parameters */
+ input_set_abs_params(input, ABS_X, 0, data->max_x, 0, 0);
+ input_set_abs_params(input, ABS_Y, 0, data->max_y, 0, 0);
+ input_abs_set_res(input, ABS_X, data->x_res);
+ input_abs_set_res(input, ABS_Y, data->y_res);
+ input_set_abs_params(input, ABS_PRESSURE, 0, ZINITIX_TP_PRESS, 0, 0);
+ input_set_abs_params(input, ABS_TOOL_WIDTH, 0, finger_width, 0, 0);
+ input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
+
+ /* And MT parameters */
+ input_set_abs_params(input, ABS_MT_POSITION_X, 0, data->max_x, 0, 0);
+ input_set_abs_params(input, ABS_MT_POSITION_Y, 0, data->max_y, 0, 0);
+ input_abs_set_res(input, ABS_MT_POSITION_X, data->x_res);
+ input_abs_set_res(input, ABS_MT_POSITION_Y, data->y_res);
+ input_set_abs_params(input, ABS_MT_PRESSURE, 0, ZINITIX_TP_PRESS, 0, 0);
+
+ input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, finger_width *
max_width, 0, 0);
+
+ input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, finger_width *
min_width, 0, 0);
+
+ data->input = input;
+
+ return 0;
+}
+
+static void zinitix_disable_regulator(void *_data)
+{
+ struct touchpad_data *data = _data;
+
+ regulator_disable(data->vcc);
+}
+
+static void zinitix_remove_sysfs_groups(void *_data)
+{
+ struct touchpad_data *data = _data;
+
+ sysfs_remove_groups(&data->client->dev.kobj, zinitix_sysfs_groups);
+}
+
+static int zinitix_touchpad_probe(struct i2c_client *client,
+ const struct i2c_device_id *dev_id)
+{
+ const struct zinitix_transport_ops *transport_ops;
+ struct device *dev = &client->dev;
+ struct touchpad_data *data;
+ unsigned long irqflags;
+ int error;
+
+ if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ transport_ops = &zinitix_i2c_ops;
+ } else {
+ dev_err(dev, "not a supported I2C/SMBus adapter\n");
+ return -EIO;
+ }
+ data = devm_kzalloc(dev, sizeof(struct touchpad_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+ i2c_set_clientdata(client, data);
+
+ data->ops = transport_ops;
+ data->client = client;
+ data->userbuffer = kmalloc(1024, GFP_KERNEL);
+
+ init_completion(&data->fw_completion);
+ mutex_init(&data->sysfs_mutex);
+ data->vcc = devm_regulator_get(dev, "vcc");
+ if (IS_ERR(data->vcc)) {
+ error = PTR_ERR(data->vcc);
+ if (error != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get 'vcc' regulator: %d\n",
+ error);
+ return error;
+ }
+ error = regulator_enable(data->vcc);
+ if (error) {
+ dev_err(dev, "Failed to enable regulator: %d\n", error);
+ return error;
+ }
+ error = devm_add_action(dev, zinitix_disable_regulator, data);
+ if (error) {
+ regulator_disable(data->vcc);
+ dev_err(dev, "Failed to add disable regulator action: %d\n",
+ error);
+ return error;
+ }
+ /* Initialize the touchpad. */
+ error = zinitix_initialize(data);
+ if (error)
+ return error;
+ error = zinitix_check_update_firmware(dev);
+
+ error = zinitix_query_device_parameters(data);
+ if (error)
+ dev_err(&client->dev, "query_device_parameters Fail!!!");
+
+ error = zinitix_setup_input_device(data);
+ if (error)
+ return error;
+ irqflags = irq_get_trigger_type(client->irq);
+ if (!irqflags)
+ irqflags = IRQF_TRIGGER_FALLING;
+
+ error = devm_request_threaded_irq(dev, client->irq, NULL, zinitix_isr,
+ irqflags | IRQF_ONESHOT,
+ client->name, data);
+ if (error) {
+ dev_err(dev, "cannot register irq=%d\n", client->irq);
+ return error;
+ }
+ error = sysfs_create_groups(&dev->kobj, zinitix_sysfs_groups);
+ if (error) {
+ dev_err(dev, "failed to create sysfs attributes: %d\n", error);
+ return error;
+ }
+ error = devm_add_action(dev, zinitix_remove_sysfs_groups, data);
+ if (error) {
+ zinitix_remove_sysfs_groups(data);
+ dev_err(dev, "Failed to add sysfs cleanup action: %d\n",
+ error);
+ return error;
+ }
+ error = input_register_device(data->input);
+ if (error) {
+ dev_err(dev, "failed to register input device: %d\n", error);
+ return error;
+ }
+ if (!dev->of_node)
+ device_init_wakeup(dev, true);
+ return 0;
+}
+
+static int __maybe_unused zinitix_touchpad_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int ret;
+
+ ret = mutex_lock_interruptible(&data->sysfs_mutex);
+ if (ret)
+ return ret;
+
+ disable_irq(client->irq);
+
+ if (device_may_wakeup(dev)) {
+ ret = zinitix_sleep(data);
+ /* Enable wake from IRQ */
+ data->irq_wake = (enable_irq_wake(client->irq) == 0);
+ } else {
+ ret = zinitix_disable_power(data);
+ }
+
+ mutex_unlock(&data->sysfs_mutex);
+ return ret;
+}
+
+static int __maybe_unused zinitix_touchpad_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct touchpad_data *data = i2c_get_clientdata(client);
+ int error;
+
+ if (device_may_wakeup(dev) && data->irq_wake) {
+ disable_irq_wake(client->irq);
+ data->irq_wake = false;
+ }
+
+ error = zinitix_enable_power(data);
+ if (error) {
+ dev_err(dev, "power up when resuming failed: %d\n", error);
+ goto err;
+ }
+
+ error = zinitix_initialize(data);
+ if (error)
+ dev_err(dev, "initialize when resuming failed: %d\n", error);
+
+err:
+ enable_irq(data->client->irq);
+ return error;
+}
+
+static SIMPLE_DEV_PM_OPS(zinitix_pm_ops, zinitix_touchpad_suspend,
zinitix_touchpad_resume);
+
+static const struct i2c_device_id zinitix_touchpad_id[] = {
+ { ZINITIX_TOUCHPAD_DRIVER_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, zinitix_touchpad_id);
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id zinitix_acpi_id[] = {
+{ "ZNT0002", 0 },
+{ "ZNT0003", 0 },
+{ "ZNT0004", 0 },
+{ "ZNT0005", 0 },
+{ "ZNT0006", 0 },
+{ "ZNT0007", 0 },
+{ "ZNT0008", 0 },
+{ "ZNT0009", 0 },
+{ "ZNT000A", 0 },
+{ "ACPI0C50", 0 },
+{ "PNP0C50", 0 },
+{ },
+};
+MODULE_DEVICE_TABLE(acpi, zinitix_acpi_id);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id zinitix_of_match[] = {
+ { .compatible = "zinitix, zntxtp" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, zinitix_of_match);
+#endif
+
+static struct i2c_driver zinitix_touchpad_driver = {
+ .driver = {
+ .name = ZINITIX_TOUCHPAD_DRIVER_NAME,
+ .pm = &zinitix_pm_ops,
+ .acpi_match_table = ACPI_PTR(zinitix_acpi_id),
+ .of_match_table = of_match_ptr(zinitix_of_match),
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+ .probe = zinitix_touchpad_probe,
+ .id_table = zinitix_touchpad_id,
+};
+
+module_i2c_driver(zinitix_touchpad_driver);
+
+MODULE_AUTHOR("<kd...@zinitix.com>");
+MODULE_DESCRIPTION("ZINITIX I2C Touchpad driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(ZINITIX_DRIVER_VERSION);
+
+
diff --git a/drivers/input/mouse/zinitix_i2c.h
b/drivers/input/mouse/zinitix_i2c.h
index e69de29bb2d1..c33dcdcaab00 100755
--- a/drivers/input/mouse/zinitix_i2c.h
+++ b/drivers/input/mouse/zinitix_i2c.h
@@ -0,0 +1,255 @@
+/*
+ * ZINITIX I2C Touchpad driver
+ *
+ * Copyright (c) 2020 ZINITIX Co.,Ltd
+ *
+ * Author: KwangDeok Son <kd...@zinitix.com>
+ *
+ * Based on cyapa driver:
+ * copyright (c) 2011-2013 ELAN Microelectronics Corp.
+ * copyright (c) 2011-2012 Cypress Semiconductor, Inc.
+ * copyright (c) 2011-2012 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Trademarks are the property of their respective owners.
+ */
+
+#ifndef _ZINITIX_I2C_H
+#define _ZINITIX_I2C_H
+
+#include <linux/types.h>
+
+#define ZINITIX_TOUCHPAD_DRIVER_NAME "zinitix_i2c_touchpad"
+#define ZINITIX_DRIVER_VERSION "1.0.0"
+#define ZINITIX_VENDOR_ID 0x14E5
+
+#define ZINITIX_TP_PRESS 128
+
+#define ZINITIX_FWIDTH_REDUCE 90
+#define ZINITIX_RETRY_COUNT 3
+
+#define ZINITIX_MAX_FINGERS 5
+#define ZINITIX_REPORT_ID 0x01
+#define ZINITIX_REPORT_ID_OFFSET 2
+#define ZINITIX_FINGER_DATA_OFFSET 4
+#define ZINITIX_BUTTON_OFFSET 11
+#define ZINITIX_MAX_REPORT_LEN 12
+
+
+#define ZINITIX_PTP_MODE 0x0001
+#define ZINITIX_DISABLE_POWER 0x0001
+
+#define ZINITIX_FW_NAME "zinitix_i2c_tp_fw.bin"
+
+/* Zinitix i2c commands */
+#define ZINITIX_MAX_X_REG 0x00C1 //Long dist
+#define ZINITIX_MAX_Y_REG 0x00C0 //short dist
+#define ZINITIX_CH_X_REG 0x0065
+#define ZINITIX_CH_Y_REG 0x0164
+#define ZINITIX_GET_DESC 0x000E
+#define ZINITIX_GET_REPORT_DESC 0x001E
+#define ZINITIX_REPORT_DESC_LENGTH 0x013E
+#define ZINITIX_PHY_X_OFFSET 0x009F
+#define ZINITIX_PHY_Y_OFFSET 0x00A9
+
+#define ZINITIX_STANDARD_CMD 0x0194
+#define ZINITIX_RESET 0x0100
+#define ZINITIX_WAKE_UP 0x0800
+#define ZINITIX_SLEEP 0x0801
+#define ZINITIX_I2C_POWER_CMD 0x0307
+
+#define ZINITIX_I2C_INF_LENGTH 2
+#define ZINITIX_I2C_REPORT_LEN 12
+#define ZINITIX_DESC_LENGTH 30
+
+
+#define WRITE_REG 0x0000
+#define READ_REG 0x0001
+#define VENDOR_COMMAND_READ 0x0002
+#define VENDOR_COMMAND_WRITE 0x0003
+#define FIRMWARE_WRITE 0x0004
+#define DEVICE_INIT 0x0005
+#define GET_INFO_CHIPID 0x0006
+
+#define REPORT_INPUT 0x04
+#define REPORT_SWITCH 0x09
+#define REPORT_LATENCY 0x0A
+
+
+#define INPUT_MOUSE 0x00
+#define INPUT_PTP 0x03
+
+#define SWITCH_NONE 0x00
+#define SWITCH_BUTTON 0x01
+#define SWITCH_SURFACE 0x02
+#define SWITCH_BOTH 0x03
+
+#define LATENCY_NORMAL 0x00
+#define LATENCY_HIGH 0x01
+
+struct i2c_client;
+struct completion;
+
+enum tp_mode {
+ IAP_MODE = 1,
+ MAIN_MODE
+};
+
+struct zinitix_contact_status {
+ u8 tip : 1;
+ u8 confidence : 1;
+ u8 contact_id : 1;
+ u8 reserved : 5;
+};
+
+struct zinitix_transport_ops {
+ int (*initialize)(struct i2c_client *client);
+ int (*sleep_control)(struct i2c_client *, u16 mode);
+ int (*set_mode)(struct i2c_client *client, u8 mode);
+
+ int (*get_max)(struct i2c_client *client,
+ unsigned int *max_x, unsigned int *max_y);
+ int (*get_num_channel)(struct i2c_client *client,
+ unsigned short *x_tracenum,
+ unsigned short *y_tracenum);
+
+ int (*reset)(struct i2c_client *client);
+
+ int (*prepare_fw_update)(struct i2c_client *client);
+ int (*write_fw_block)(struct i2c_client *client,
+ const u8 *page, u16 checksum, int idx);
+ int (*read_fw_block)(struct i2c_client *client,
+ u8 *page, int idx);
+ int (*finish_fw_update)(struct i2c_client *client,
+ struct completion *reset_done);
+
+ int (*get_report)(struct i2c_client *client, u8 *report);
+ int (*get_pressure_adjustment)(struct i2c_client *client,
+ int *adjustment);
+ int (*get_pattern)(struct i2c_client *client, u8 *pattern);
+};
+
+extern const struct zinitix_transport_ops zinitix_i2c_ops;
+
+#define TO_LITTLE_ENDIAN(n1, n2, n3) (((u32)n1<<16 & 0x00FF0000) | ((u32)n2<<8
& 0x0000FF00) | ((u32)n3 & 0x000000FF))
+#define SECTOR_SZ (8 * 2)
+#define FW_BUFF_SIZE (1024*48) // 48K
+#define FW_BUFF_SIZE_650 (1024*128) // 128K
+#define FW_REWRITE_LIMIT 8
+
+/* Zinitix i2c HID commands */
+#define FWUPGRADE_INIT 0x20F0
+#define FWUPGRADE_PGM 0x21F0
+#define FWUPGRADE_READ 0x22F0
+#define FWUPGRADE_MODE 0x25F0
+#define FWUPGRADE_WRITE_MODE 0x27F0
+#define FWUPGRADE_MERASE 0x28F0
+#define FWUPGRADE_START_PAGE 0x29F0
+#define FWUPGRADE_BLOCK_ERASE 0x2AF0
+
+#define HW_RESET 0x04F0
+
+#define REG_FWVERSION_MAJOR 0x0012
+#define REG_FWVERSION_MINOR 0x0121
+#define REG_FWVERSION_RELEASE 0x0013
+#define REG_FWCHECKSUM 0x012C
+
+#define VENDOR_CMD_ENABLE 0x10F0
+#define INIT_NVM 0x12F0
+#define DISABLE_NVM_WP 0x13F0
+
+
+enum FWUPGRADE_PROGMODE
+{
+ FWUPGRADE_PROGRAM = 0,
+ FWUPGRADE_ONLYWRITE = 1,
+ FWUPGRADE_WRITEREPEAT = 2,
+};
+
+union nvm_binary_info
+{
+ u16 buff16[128*1024/2];
+ u32 buff32[128*1024/4]; //128*1024byte
+ struct _val
+ {
+ u32 RESERVED0; // 0
+ u32 auto_boot_flag1; // 1
+ u32 auto_boot_flag2; // 2
+ u32 slave_addr_flag; // 3
+ u32 RESERVED1[4]; // 4
+ u32 info_checksum; // 8
+ u32 core_checksum; // 9
+ u32 custom_checksum; // 10
+ u32 register_checksum; // 11
+ u16 hw_id; // 12
+ u16 RESERVED2;
+ u16 major_ver; // 13
+ u16 RESERVED3;
+ u16 minor_ver; // 14
+ u16 RESERVED4;
+ u16 release_ver; // 15
+ u16 RESERVED5;
+ u16 chip_id; // 16
+ u16 chip_id_reverse;
+ u16 chip_naming_number; // 17
+ u16 RESERVED6[9];
+ u8 info_size[4]; // 21
+ u8 core_size[4]; // 22
+ u8 custom_size[4]; // 23
+ u8 register_size[4]; // 24
+ u8 total_size[4]; // 25
+ u32 RESERVED7[5]; // 26
+
+ u32 RESERVED8[32736]; // 32
+ }val;
+};
+
+struct fw_info {
+ u32 info_size;
+ u32 core_size;
+ u32 cust_size;
+ u32 regi_size;
+ u32 start_address;
+ u32 end_address;
+};
+
+/* The main device structure */
+
+struct touchpad_data {
+ struct i2c_client *client;
+ struct input_dev *input;
+ struct regulator *vcc;
+
+ const struct zinitix_transport_ops *ops;
+ /* for fw update */
+ struct completion fw_completion;
+ bool in_fw_update;
+ struct mutex sysfs_mutex;
+ unsigned int phy_x;
+ unsigned int phy_y;
+ unsigned int max_x;
+ unsigned int max_y;
+ unsigned int width_x;
+ unsigned int width_y;
+ unsigned int x_res;
+ unsigned int y_res;
+
+ u16 product_id;
+ int pressure_adjustment;
+ bool irq_wake;
+ u8 *userbuffer;
+ bool ready_userbuffer;
+ u16 recv_data_size;
+ u16 chip_code;
+};
+
+u16 zinitix_i2c_read_reg(struct i2c_client *client, u16 reg, u16 *value);
+u16 zinitix_i2c_read_data(struct i2c_client *client, u16 reg, u8 *verify_data);
+int zinitix_i2c_write_reg(struct i2c_client *client, u16 reg, u16 value);
+int zinitix_i2c_write_data(struct i2c_client *client, u16 reg, const u8*
value, u16 size);
+
+#endif /* _ZINITIX_I2C_H */
+
