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Date: Thu, 12 Feb 2015 14:07:21 +0800
From: 曾婷葳 (tammy_tseng) <tammy_tseng@....com>
To: "Dmitry Torokhov" <dmitry.torokhov@...il.com>,
"Oliver Neukum" <oneukum@...e.de>
Cc: "lkml" <linux-kernel@...r.kernel.org>,
<linux-input@...r.kernel.org>, <tammy0524@...il.com>
Subject: RE: [PATCH 1/2] INPUT/HID: add touch support for SiS touch driver
Hi,
I've checked the coding style and modified the i2c and hid touch driver for sis touch controller.
Please help review them.
Thanks a lot.
Tammy
-----
Here is the sis i2c driver in input:
linux-3.18.5/drivers/input/touchscreen/Kconfig | 7 +
linux-3.18.5/drivers/input/touchscreen/Makefile | 1 +
linux-3.18.5/drivers/input/touchscreen/sis_i2c.c | 1032 ++++++++++++++++++++++
linux-3.18.5/drivers/input/touchscreen/sis_i2c.h | 173 ++++
4 files changed, 1213 insertions(+)
-----
diff --git a/linux-3.18.5/drivers/input/touchscreen/Kconfig b/linux-3.18.5/drivers/input/touchscreen/Kconfig
index e1d8003..5093ccc 100644
--- a/linux-3.18.5/drivers/input/touchscreen/Kconfig
+++ b/linux-3.18.5/drivers/input/touchscreen/Kconfig
@@ -962,4 +962,11 @@ config TOUCHSCREEN_ZFORCE
To compile this driver as a module, choose M here: the
module will be called zforce_ts.
+config TOUCHSCREEN_SIS_I2C
+ tristate "SiS 9200 family I2C touchscreen driver"
+ depends on I2C
+ default n
+ help
+ This enables support for SiS 9200 family over I2C based touchscreens.
+
endif
diff --git a/linux-3.18.5/drivers/input/touchscreen/Makefile b/linux-3.18.5/drivers/input/touchscreen/Makefile
index 090e61c..25cfd9f 100644
--- a/linux-3.18.5/drivers/input/touchscreen/Makefile
+++ b/linux-3.18.5/drivers/input/touchscreen/Makefile
@@ -79,3 +79,4 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o
obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o
obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o
obj-$(CONFIG_TOUCHSCREEN_ZFORCE) += zforce_ts.o
+obj-$(CONFIG_TOUCHSCREEN_SIS_I2C) += sis_i2c.o
diff --git a/linux-3.18.5/drivers/input/touchscreen/sis_i2c.c b/linux-3.18.5/drivers/input/touchscreen/sis_i2c.c
new file mode 100644
index 0000000..260a7b6
--- /dev/null
+++ b/linux-3.18.5/drivers/input/touchscreen/sis_i2c.c
@@ -0,0 +1,1032 @@
+/* drivers/input/touchscreen/sis_i2c.c
+ * - I2C Touch panel driver for SiS 9200 family
+ *
+ * Copyright (C) 2011 SiS, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/module.h>
+#include <linux/delay.h>
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+#include <linux/hrtimer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include "sis_i2c.h"
+#include <linux/linkage.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/uaccess.h>
+#include <linux/irq.h>
+#include <asm/unaligned.h>
+
+#ifdef _STD_RW_IO
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/cdev.h>
+#define DEVICE_NAME "sis_aegis_touch_device"
+static const int sis_char_devs_count = 1; /* device count */
+static int sis_char_major;
+static struct cdev sis_char_cdev;
+static struct class *sis_char_class;
+#endif
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { SIS_SLAVE_ADDR, I2C_CLIENT_END };
+static struct workqueue_struct *sis_wq;
+struct sis_ts_data *ts_bak;
+struct sisTP_driver_data *TPInfo;
+static void sis_tpinfo_clear(struct sisTP_driver_data *TPInfo, int max);
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void sis_ts_early_suspend(struct early_suspend *h);
+static void sis_ts_late_resume(struct early_suspend *h);
+#endif
+
+#ifdef _CHECK_CRC
+static const unsigned short crc16tab[256] = {
+ 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
+ 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
+ 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
+ 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
+ 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
+ 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
+ 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
+ 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
+ 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
+ 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
+ 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
+ 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
+ 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
+ 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
+ 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
+ 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
+ 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
+ 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
+ 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
+ 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
+ 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
+ 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
+ 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
+ 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
+ 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
+ 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
+ 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
+ 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
+ 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
+ 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
+ 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
+ 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
+};
+
+static uint16_t cal_crc(char *cmd, int start, int end)
+{
+ int i = 0;
+ uint16_t crc = 0;
+
+ for (i = start; i <= end ; i++)
+ crc = (crc << 8) ^ crc16tab[((crc >> 8) ^ cmd[i]) & 0x00FF];
+ return crc;
+}
+#endif
+
+#ifdef _DEBUG_PACKAGE
+static void PrintBuffer(int start, int length, char *buf)
+{
+ int i;
+
+ for (i = start; i < length; i++) {
+ pr_info("%02x ", buf[i]);
+ if (i != 0 && i % 30 == 0)
+ pr_info("\n");
+ }
+ pr_info("\n");
+}
+#endif
+
+static int sis_command_for_write(struct i2c_client *client, int wlength,
+ unsigned char *wdata)
+{
+ int ret = SIS_ERR;
+ struct i2c_msg msg;
+
+ msg.addr = client->addr;
+ msg.flags = 0; /*Write*/
+ msg.len = wlength;
+ msg.buf = (unsigned char *)wdata;
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ return ret;
+}
+
+static int sis_command_for_read(struct i2c_client *client, int rlength,
+ unsigned char *rdata)
+{
+ int ret = SIS_ERR;
+ struct i2c_msg msg;
+
+ msg.addr = client->addr;
+ msg.flags = I2C_M_RD; /*Read*/
+ msg.len = rlength;
+ msg.buf = rdata;
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ return ret;
+}
+
+static int sis_cul_unit(uint8_t report_id)
+{
+ int ret = NORMAL_LEN_PER_POINT;
+
+ if (report_id != ALL_IN_ONE_PACKAGE) {
+ if (IS_AREA(report_id) /*&& IS_TOUCH(report_id)*/)
+ ret += AREA_LEN_PER_POINT;
+ if (IS_PRESSURE(report_id))
+ ret += PRESSURE_LEN_PER_POINT;
+ }
+
+ return ret;
+}
+
+static int sis_ReadPacket(struct i2c_client *client, uint8_t cmd, uint8_t *buf)
+{
+ uint8_t tmpbuf[MAX_BYTE] = {0}; /*MAX_BYTE = 64;*/
+ int ret = SIS_ERR;
+ int touchnum = 0;
+ int p_count = 0;
+ int touc_formate_id = 0;
+ int locate = 0;
+ bool read_first = true;
+ /*
+ * New i2c format
+ * buf[0] = Low 8 bits of byte count value
+ * buf[1] = High 8 bits of byte counte value
+ * buf[2] = Report ID
+ * buf[touch num * 6 + 2 ] = Touch informations;
+ * 1 touch point has 6 bytes, it could be none if no touch
+ * buf[touch num * 6 + 3] = Touch numbers
+ *
+ * One touch point information include 6 bytes, the order is
+ *
+ * 1. status = touch down or touch up
+ * 2. id = finger id
+ * 3. x axis low 8 bits
+ * 4. x axis high 8 bits
+ * 5. y axis low 8 bits
+ * 6. y axis high 8 bits
+ * */
+ do {
+ if (locate >= PACKET_BUFFER_SIZE) {
+ pr_err("sis_ReadPacket: Buf Overflow\n");
+ return SIS_ERR;
+ }
+ ret = sis_command_for_read(client, MAX_BYTE, tmpbuf);
+#ifdef _DEBUG_PACKAGE
+ pr_info("chaoban test: Buf_Data [0~63]\n");
+ PrintBuffer(0, 64, tmpbuf);
+#endif
+ if (ret < 0) {
+ pr_err("sis_ReadPacket: i2c transfer error\n");
+ return ret;
+ }
+ /*error package length of receiving data*/
+ else if (tmpbuf[P_BYTECOUNT] > MAX_BYTE) {
+ pr_err("sis_ReadPacket: Error Bytecount\n");
+ return SIS_ERR;
+ }
+ if (read_first) {
+ /*access NO TOUCH event unless BUTTON NO TOUCH event*/
+ if (tmpbuf[P_BYTECOUNT] == 0/*NO_TOUCH_BYTECOUNT*/)
+ return 0; /*touchnum is 0*/
+ }
+ /*skip parsing data when two devices are registered
+ * at the same slave address*/
+ /*parsing data when P_REPORT_ID && 0xf is TOUCH_FORMAT
+ * or P_REPORT_ID is ALL_IN_ONE_PACKAGE*/
+ touc_formate_id = tmpbuf[P_REPORT_ID] & 0xf;
+ if ((touc_formate_id != TOUCH_FORMAT)
+ && (touc_formate_id != HIDI2C_FORMAT)
+ && (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE)) {
+ pr_err("sis_ReadPacket: Error Report_ID\n");
+ return SIS_ERR;
+ }
+ p_count = (int) tmpbuf[P_BYTECOUNT] - 1; /*start from 0*/
+ if (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE) {
+ if (IS_TOUCH(tmpbuf[P_REPORT_ID])) {
+ p_count -= BYTE_CRC_I2C;/*delete 2 byte crc*/
+ } else if (IS_HIDI2C(tmpbuf[P_REPORT_ID])) {
+ p_count -= BYTE_CRC_HIDI2C;
+ } else { /*should not be happen*/
+ pr_err("sis_ReadPacket: delete crc error\n");
+ return SIS_ERR;
+ }
+ if (IS_SCANTIME(tmpbuf[P_REPORT_ID]))
+ p_count -= BYTE_SCANTIME;
+ }
+ /*else {}*/ /*For ALL_IN_ONE_PACKAGE*/
+ if (read_first) {
+ touchnum = tmpbuf[p_count];
+ } else {
+ if (tmpbuf[p_count] != 0) {
+ pr_err("sis_ReadPacket: get error package\n");
+ return SIS_ERR;
+ }
+ }
+
+#ifdef _CHECK_CRC
+ /* HID over I2C data foramt and no touch packet without CRC */
+ if ((touc_formate_id != HIDI2C_FORMAT) &&
+ (tmpbuf[P_BYTECOUNT] > 3)) {
+ int crc_end = p_count + (IS_SCANTIME(
+ tmpbuf[P_REPORT_ID]) * 2);
+ uint16_t buf_crc = cal_crc(
+ tmpbuf, 2, crc_end);/*sub bytecount(2 byte)*/
+ int l_package_crc = (IS_SCANTIME(
+ tmpbuf[P_REPORT_ID]) * 2) + p_count + 1;
+ uint16_t package_crc = le16_to_cpu(get_unaligned_le16(
+ &tmpbuf[l_package_crc]));
+
+ if (buf_crc != package_crc) {
+ pr_err("sis_ReadPacket: CRC Error\n");
+ return SIS_ERR;
+ }
+ }
+#endif
+ memcpy(&buf[locate], &tmpbuf[0], 64);
+ /*Buf_Data [0~63] [64~128]*/
+ locate += 64;
+ read_first = false;
+ } while (tmpbuf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE &&
+ tmpbuf[p_count] > 5);
+ return touchnum;
+}
+
+#ifdef _INT_MODE_1
+static void ts_report_key(struct i2c_client *client, uint8_t keybit_state)
+{
+ int i = 0;
+ uint8_t diff_keybit_state = 0x0;
+ /*check keybit_state is difference with pre_keybit_state*/
+ uint8_t key_value = 0x0; /*button location for binary*/
+ uint8_t key_pressed = 0x0; /*button is up or down*/
+ struct sis_ts_data *ts = i2c_get_clientdata(client);
+
+ if (!ts) {
+ pr_err("%s error: Missing Platform Data!\n", __func__);
+ return;
+ }
+
+ diff_keybit_state = TPInfo->pre_keybit_state ^ keybit_state;
+
+ if (diff_keybit_state) {
+ for (i = 0; i < BUTTON_KEY_COUNT; i++) {
+ if ((diff_keybit_state >> i) & 0x01) {
+ key_value = diff_keybit_state & (0x01 << i);
+ key_pressed = (keybit_state >> i) & 0x01;
+ switch (key_value) {
+ case MSK_COMP:
+ input_report_key(ts->input_dev,
+ KEY_COMPOSE, key_pressed);
+ break;
+ case MSK_BACK:
+ input_report_key(ts->input_dev,
+ KEY_BACK, key_pressed);
+ break;
+ case MSK_MENU:
+ input_report_key(ts->input_dev,
+ KEY_MENU, key_pressed);
+ break;
+ case MSK_HOME:
+ input_report_key(ts->input_dev,
+ KEY_HOME, key_pressed);
+ break;
+ case MSK_NOBTN:
+ /*Release the button if it touched.*/
+ default:
+ break;
+ }
+ }
+ }
+ TPInfo->pre_keybit_state = keybit_state;
+ }
+}
+#endif
+
+static void sis_ts_work_func(struct work_struct *work)
+{
+ struct sis_ts_data *ts = container_of(work, struct sis_ts_data, work);
+ int ret = SIS_ERR;
+ int point_unit;
+ uint8_t buf[PACKET_BUFFER_SIZE] = {0};
+ uint8_t i = 0, fingers = 0;
+ uint8_t px = 0, py = 0, pstatus = 0;
+ uint8_t p_area = 0;
+ uint8_t p_preasure = 0;
+ bool all_touch_up = true;
+
+ mutex_lock(&ts->mutex_wq);
+ /* I2C or SMBUS block data read */
+ ret = sis_ReadPacket(ts->client, SIS_CMD_NORMAL, buf);
+ /*Error Number*/
+ if (ret < 0)
+ goto err_free_allocate;
+ /*access NO TOUCH event unless BUTTON NO TOUCH event*/
+ else if (ret == 0) {
+ fingers = 0;
+ sis_tpinfo_clear(TPInfo, MAX_FINGERS);
+ goto label_send_report;
+ /*need to report input_mt_sync()*/
+ }
+ sis_tpinfo_clear(TPInfo, MAX_FINGERS);
+
+ /*Parser and Get the sis9200 data*/
+ point_unit = sis_cul_unit(buf[P_REPORT_ID]);
+ fingers = ret;
+
+ TPInfo->fingers = fingers = (fingers > MAX_FINGERS ? 0 : fingers);
+
+ /*fingers 10 = 0 ~ 9*/
+ for (i = 0; i < fingers; i++) {
+ if ((buf[P_REPORT_ID] != ALL_IN_ONE_PACKAGE) && (i >= 5)) {
+ /*Calc point status*/
+ pstatus = BYTE_BYTECOUNT + BYTE_ReportID
+ + ((i - 5) * point_unit);
+ pstatus += 64;
+ } else {
+ pstatus = BYTE_BYTECOUNT + BYTE_ReportID
+ + (i * point_unit);
+ /*Calc point status*/
+ }
+ px = pstatus + 2; /*Calc point x_coord*/
+ py = px + 2; /*Calc point y_coord*/
+ if ((buf[pstatus]) == TOUCHUP) {
+ TPInfo->pt[i].Width = 0;
+ TPInfo->pt[i].Height = 0;
+ TPInfo->pt[i].Pressure = 0;
+ } else if (buf[P_REPORT_ID] == ALL_IN_ONE_PACKAGE
+ && (buf[pstatus]) == TOUCHDOWN) {
+ TPInfo->pt[i].Width = 1;
+ TPInfo->pt[i].Height = 1;
+ TPInfo->pt[i].Pressure = 1;
+ } else if ((buf[pstatus]) == TOUCHDOWN) {
+ p_area = py + 2;
+ p_preasure = py + 2 + (IS_AREA(buf[P_REPORT_ID]) * 2);
+ /*area*/
+ if (IS_AREA(buf[P_REPORT_ID])) {
+ TPInfo->pt[i].Width = buf[p_area];
+ TPInfo->pt[i].Height = buf[p_area + 1];
+ } else {
+ TPInfo->pt[i].Width = 1;
+ TPInfo->pt[i].Height = 1;
+ }
+ /*preasure*/
+ if (IS_PRESSURE(buf[P_REPORT_ID]))
+ TPInfo->pt[i].Pressure = (buf[p_preasure]);
+ else
+ TPInfo->pt[i].Pressure = 1;
+ } else {
+ pr_err("sis_ts_work_func: Error Touch Status\n");
+ goto err_free_allocate;
+ }
+ TPInfo->pt[i].id = (buf[pstatus + 1]);
+ TPInfo->pt[i].x = le16_to_cpu(get_unaligned_le16(&buf[px]));
+ TPInfo->pt[i].y = le16_to_cpu(get_unaligned_le16(&buf[py]));
+ }
+
+#ifdef _DEBUG_REPORT
+ for (i = 0; i < TPInfo->fingers; i++)
+ pr_info("chaoban test: i = %d, id = %d, x = %d, y = %d, pstatus = %d, width = %d, height = %d, pressure = %d\n",
+ i, TPInfo->pt[i].id, TPInfo->pt[i].x, TPInfo->pt[i].y,
+ buf[pstatus], TPInfo->pt[i].Width, TPInfo->pt[i].Height,
+ TPInfo->pt[i].Pressure);
+#endif
+label_send_report:
+/* Report co-ordinates to the multi-touch stack */
+ for (i = 0; ((i < TPInfo->fingers) && (i < MAX_FINGERS)); i++) {
+ if (TPInfo->pt[i].Pressure) {
+ TPInfo->pt[i].Width *= AREA_UNIT;
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR,
+ TPInfo->pt[i].Width);
+ TPInfo->pt[i].Height *= AREA_UNIT;
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MINOR,
+ TPInfo->pt[i].Height);
+ input_report_abs(ts->input_dev, ABS_MT_PRESSURE,
+ TPInfo->pt[i].Pressure);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X,
+ TPInfo->pt[i].x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y,
+ TPInfo->pt[i].y);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID,
+ TPInfo->pt[i].id);
+ /*Android 2.3*/
+ input_mt_sync(ts->input_dev);
+ all_touch_up = false;
+ }
+ if (i == (TPInfo->fingers - 1) && all_touch_up == true)
+ input_mt_sync(ts->input_dev);
+ }
+ if (TPInfo->fingers == 0)
+ input_mt_sync(ts->input_dev);
+ input_sync(ts->input_dev);
+
+err_free_allocate:
+
+ if (ts->use_irq) {
+#ifdef _INT_MODE_1 /*case 1 mode*/
+ /*TODO: After interrupt status low,
+ * read i2c bus data by polling,
+ * until interrupt status is high*/
+ ret = gpio_get_value(GPIO_IRQ);
+ /*interrupt pin is still LOW,
+ * read data until interrupt pin is released.*/
+ if (!ret)
+ hrtimer_start(&ts->timer, ktime_set(0, TIMER_NS),
+ HRTIMER_MODE_REL);
+ else {
+ if (TPInfo->pre_keybit_state)
+ /*clear for interrupt*/
+ ts_report_key(ts->client, 0x0);
+
+ if (irqd_irq_disabled(&ts->desc->irq_data))
+ enable_irq(ts->client->irq);
+ }
+#else /*case 2 mode*/
+ if (irqd_irq_disabled(&ts->desc->irq_data))
+ enable_irq(ts->client->irq);
+#endif
+ }
+
+ mutex_unlock(&ts->mutex_wq);
+}
+
+static void sis_tpinfo_clear(struct sisTP_driver_data *TPInfo, int max)
+{
+ int i = 0;
+
+ for (i = 0; i < max; i++) {
+ TPInfo->pt[i].id = -1;
+ TPInfo->pt[i].x = 0;
+ TPInfo->pt[i].y = 0;
+ TPInfo->pt[i].Pressure = 0;
+ TPInfo->pt[i].Width = 0;
+ }
+ TPInfo->id = 0x0;
+ TPInfo->fingers = 0;
+}
+
+static enum hrtimer_restart sis_ts_timer_func(struct hrtimer *timer)
+{
+ struct sis_ts_data *ts = container_of(timer, struct sis_ts_data, timer);
+
+ queue_work(sis_wq, &ts->work);
+ if (!ts->use_irq) /*For Polling mode*/
+ hrtimer_start(&ts->timer, ktime_set(0, TIMER_NS), HRTIMER_MODE_REL);
+ return HRTIMER_NORESTART;
+}
+
+static irqreturn_t sis_ts_irq_handler(int irq, void *dev_id)
+{
+ struct sis_ts_data *ts = dev_id;
+
+ if (!irqd_irq_disabled(&ts->desc->irq_data))
+ disable_irq_nosync(ts->client->irq);
+ queue_work(sis_wq, &ts->work);
+ return IRQ_HANDLED;
+}
+
+static int initial_irq(void)
+{
+ int ret = 0;
+#ifdef _I2C_INT_ENABLE
+ /* initialize gpio and interrupt pins */
+ /*ex. GPIO_133 for interrupt mode*/
+ ret = gpio_request(GPIO_IRQ, "GPIO_133");
+ if (ret < 0) {
+ /*Set Active Low.
+ * Please reference the file include/linux/interrupt.h*/
+ pr_err("sis_ts_probe: Failed to gpio_request\n");
+ pr_err("sis_ts_probe: Fail : gpio_request was called before this driver call\n");
+ }
+ /* setting gpio direction here OR boardinfo file*/
+
+#else
+ ret = SIS_ERR;
+#endif
+ return ret;
+}
+
+/*static uint16_t cal_crc_with_cmd(char *data, int start, int end, uint8_t cmd)
+{
+ int i = 0;
+ uint16_t crc = 0;
+
+ crc = (crc << 8) ^ crc16tab[((crc >> 8) ^ cmd) & 0x00FF];
+ for (i = start; i <= end ; i++)
+ crc = (crc << 8) ^ crc16tab[((crc >> 8) ^ data[i]) & 0x00FF];
+ return crc;
+}*/
+
+/*static void write_crc(unsigned char *buf, int start, int end)
+{
+ uint16_t crc = 0;
+
+ crc = cal_crc(buf, start , end);
+ buf[end+1] = (crc >> 8) & 0xff;
+ buf[end+2] = crc & 0xff;
+}*/
+
+#ifdef _STD_RW_IO
+#define BUFFER_SIZE MAX_BYTE
+static ssize_t sis_cdev_write(struct file *file, const char __user *buf,
+ size_t count,
+ loff_t *f_pos)
+{
+ int ret = 0;
+ char *kdata;
+ char cmd;
+
+ pr_info("sis_cdev_write.\n");
+ if (ts_bak == 0)
+ return SIS_ERR_CLIENT;
+
+ ret = access_ok(VERIFY_WRITE, buf, BUFFER_SIZE);
+ if (!ret) {
+ pr_err("cannot access user space memory\n");
+ return SIS_ERR_ACCESS_USER_MEM;
+ }
+
+ kdata = kmalloc(BUFFER_SIZE, GFP_KERNEL);
+ if (kdata == 0)
+ return SIS_ERR_ALLOCATE_KERNEL_MEM;
+
+ ret = copy_from_user(kdata, buf, BUFFER_SIZE);
+ if (ret) {
+ pr_err("copy_from_user fail\n");
+ kfree(kdata);
+ return SIS_ERR_COPY_FROM_USER;
+ }
+#ifdef _DEBUG_PACKAGE
+ PrintBuffer(0, count, kdata);
+#endif
+
+ cmd = kdata[6];
+
+/*Write & Read*/
+ ret = sis_command_for_write(ts_bak->client, count, kdata);
+ if (ret < 0) {
+ pr_err("i2c_transfer write error %d\n", ret);
+ kfree(kdata);
+ return SIS_ERR_TRANSMIT_I2C;
+ }
+ if (copy_to_user((char *) buf, kdata, BUFFER_SIZE)) {
+ pr_err("copy_to_user fail\n");
+ ret = SIS_ERR_COPY_FROM_KERNEL;
+ }
+ kfree(kdata);
+ return ret;
+}
+
+/*for get system time*/
+static ssize_t sis_cdev_read(struct file *file, char __user *buf,
+ size_t count,
+ loff_t *f_pos)
+{
+ int ret = 0;
+ char *kdata;
+
+ pr_info("sis_cdev_read.\n");
+ if (ts_bak == 0)
+ return SIS_ERR_CLIENT;
+ ret = access_ok(VERIFY_WRITE, buf, BUFFER_SIZE);
+ if (!ret) {
+ pr_err("cannot access user space memory\n");
+ return SIS_ERR_ACCESS_USER_MEM;
+ }
+ kdata = kmalloc(BUFFER_SIZE, GFP_KERNEL);
+ if (kdata == 0)
+ return SIS_ERR_ALLOCATE_KERNEL_MEM;
+ ret = copy_from_user(kdata, buf, BUFFER_SIZE);
+ if (ret) {
+ pr_err("copy_from_user fail\n");
+ kfree(kdata);
+ return SIS_ERR_COPY_FROM_USER;
+ }
+#ifdef _DEBUG_PACKAGE
+ PrintBuffer(0, count, kdata);
+#endif
+ /*Write & Read*/
+ ret = sis_command_for_read(ts_bak->client, MAX_BYTE, kdata);
+ if (ret < 0) {
+ pr_err("i2c_transfer read error %d\n", ret);
+ kfree(kdata);
+ return SIS_ERR_TRANSMIT_I2C;
+ }
+
+ ret = le16_to_cpu(get_unaligned_le16(kdata));
+
+ /*{
+ int i;
+
+ pr_info("ret=%d\n", ret);
+ for (i = 0; i < ret && i < BUFFER_SIZE; i++)
+ pr_info("%02x ", kdata[i]);
+ pr_info("\n");
+ }*/
+
+ if (copy_to_user((char *)buf, kdata, BUFFER_SIZE)) {
+ pr_err("copy_to_user fail\n");
+ ret = SIS_ERR_COPY_FROM_KERNEL;
+ }
+
+ kfree(kdata);
+ return ret;
+}
+
+#undef BUFFER_SIZE
+
+static int sis_cdev_open(struct inode *inode, struct file *filp)
+{
+ pr_info("sis_cdev_open.\n");
+ if (ts_bak == 0)
+ return SIS_ERR_CLIENT;
+
+ if (ts_bak->use_irq) {
+ if (!irqd_irq_disabled(&ts_bak->desc->irq_data))
+ disable_irq(ts_bak->client->irq);
+ else {
+ pr_info("sis_cdev_open: IRQ_STATUS: %x\n",
+ irqd_irq_disabled(&ts_bak->desc->irq_data));
+ }
+ }
+ hrtimer_cancel(&ts_bak->timer);
+ flush_workqueue(sis_wq); /*only flush sis_wq*/
+ return 0; /*success*/
+}
+
+static int sis_cdev_release(struct inode *inode, struct file *filp)
+{
+ pr_info("sis_cdev_release.\n");
+ if (ts_bak == 0)
+ return SIS_ERR_CLIENT;
+ if (ts_bak->use_irq) {
+ if (irqd_irq_disabled(&ts_bak->desc->irq_data))
+ enable_irq(ts_bak->client->irq);
+ } else
+ hrtimer_start(&ts_bak->timer, ktime_set(1, 0),
+ HRTIMER_MODE_REL);
+ return 0;
+}
+
+static const struct file_operations sis_cdev_fops = {
+ .owner = THIS_MODULE,
+ .read = sis_cdev_read,
+ .write = sis_cdev_write,
+ .open = sis_cdev_open,
+ .release = sis_cdev_release,
+};
+
+static int sis_setup_chardev(struct sis_ts_data *ts)
+{
+ dev_t dev = MKDEV(sis_char_major, 0);
+ int ret = 0;
+ struct device *class_dev = NULL;
+
+ pr_info("sis_setup_chardev.\n");
+ if (ts == NULL)
+ return -ENOMEM;
+
+ /*dynamic allocate driver handle*/
+ ret = alloc_chrdev_region(&dev, 0,
+ sis_char_devs_count, DEVICE_NAME);
+ if (ret)
+ return ret;
+
+ sis_char_major = MAJOR(dev);
+ cdev_init(&sis_char_cdev, &sis_cdev_fops);
+ sis_char_cdev.owner = THIS_MODULE;
+ ret = cdev_add(&sis_char_cdev, dev, sis_char_devs_count);
+ if (ret)
+ goto err1;
+
+ pr_info("%s driver(major %d) installed.\n",
+ DEVICE_NAME, sis_char_major);
+ /*register class*/
+ sis_char_class = class_create(THIS_MODULE, DEVICE_NAME);
+ if (IS_ERR(sis_char_class)) {
+ ret = PTR_ERR(sis_char_class);
+ goto err2;
+ }
+
+ class_dev = device_create(sis_char_class, NULL, dev, NULL, DEVICE_NAME);
+ if (IS_ERR(class_dev)) {
+ ret = PTR_ERR(class_dev);
+ goto err3;
+ }
+
+ return 0;
+err3:
+ class_destroy(sis_char_class);
+ sis_char_class = NULL;
+err2:
+ cdev_del(&sis_char_cdev);
+ memset(&sis_char_cdev, 0, sizeof(struct cdev));
+err1:
+ sis_char_major = 0;
+ unregister_chrdev_region(dev, sis_char_devs_count);
+ return ret;
+}
+
+static void sis_deinit_chardev(void)
+{
+ dev_t dev = MKDEV(sis_char_major, 0);
+
+ if (sis_char_class) {
+ pr_info("sis_deinit_chardev\n");
+ device_destroy(sis_char_class, dev);
+ class_destroy(sis_char_class);
+ sis_char_class = NULL;
+ cdev_del(&sis_char_cdev);
+ memset(&sis_char_cdev, 0, sizeof(struct cdev));
+ sis_char_major = 0;
+ unregister_chrdev_region(dev, sis_char_devs_count);
+ }
+}
+#endif
+
+static int sis_ts_probe(
+ struct i2c_client *client, const struct i2c_device_id *id)
+{
+ int ret = 0;
+ struct sis_ts_data *ts = NULL;
+ struct sis_i2c_rmi_platform_data *pdata = NULL;
+
+ pr_info("sis_ts_probe\n");
+ TPInfo = kzalloc(sizeof(struct sisTP_driver_data), GFP_KERNEL);
+ if (TPInfo == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_data_failed;
+ }
+ ts = kzalloc(sizeof(struct sis_ts_data), GFP_KERNEL);
+ if (ts == NULL) {
+ ret = -ENOMEM;
+ goto err_alloc_data_failed;
+ }
+ ts_bak = ts;
+ mutex_init(&ts->mutex_wq);
+ /*1. Init Work queue and necessary buffers*/
+ INIT_WORK(&ts->work, sis_ts_work_func);
+ ts->client = client;
+ i2c_set_clientdata(client, ts);
+ pdata = client->dev.platform_data;
+ if (pdata)
+ ts->power = pdata->power;
+ if (ts->power) {
+ ret = ts->power(1);
+ if (ret < 0) {
+ pr_err("sis_ts_probe power on failed\n");
+ goto err_power_failed;
+ }
+ }
+ /*2. Allocate input device*/
+ ts->input_dev = input_allocate_device();
+ if (ts->input_dev == NULL) {
+ ret = -ENOMEM;
+ pr_err("sis_ts_probe: Failed to allocate input device\n");
+ goto err_input_dev_alloc_failed;
+ }
+ /*This input device name should be the same to IDC file name.*/
+ ts->input_dev->name = "sis_touch";
+
+ set_bit(EV_ABS, ts->input_dev->evbit);
+ set_bit(EV_KEY, ts->input_dev->evbit);
+ set_bit(ABS_MT_POSITION_X, ts->input_dev->absbit);
+ set_bit(ABS_MT_POSITION_Y, ts->input_dev->absbit);
+ set_bit(ABS_MT_TRACKING_ID, ts->input_dev->absbit);
+ set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
+ set_bit(ABS_MT_PRESSURE, ts->input_dev->absbit);
+ set_bit(ABS_MT_TOUCH_MAJOR, ts->input_dev->absbit);
+ set_bit(ABS_MT_TOUCH_MINOR, ts->input_dev->absbit);
+ input_set_abs_params(ts->input_dev, ABS_MT_PRESSURE,
+ 0, PRESSURE_MAX, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR,
+ 0, AREA_LENGTH_LONGER, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MINOR,
+ 0, AREA_LENGTH_SHORT, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X,
+ 0, SIS_MAX_X, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y,
+ 0, SIS_MAX_Y, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID,
+ 0, 15, 0, 0);
+ /* add for touch keys */
+ set_bit(KEY_COMPOSE, ts->input_dev->keybit);
+ set_bit(KEY_BACK, ts->input_dev->keybit);
+ set_bit(KEY_MENU, ts->input_dev->keybit);
+ set_bit(KEY_HOME, ts->input_dev->keybit);
+ /*3. Register input device to core*/
+ ret = input_register_device(ts->input_dev);
+ if (ret) {
+ pr_err("sis_ts_probe: Unable to register %s input device\n",
+ ts->input_dev->name);
+ goto err_input_register_device_failed;
+ }
+ /*4. irq or timer setup*/
+ ret = initial_irq();
+ if (ret >= 0) {
+ client->irq = gpio_to_irq(GPIO_IRQ);
+ ret = request_irq(client->irq, sis_ts_irq_handler,
+ IRQF_TRIGGER_FALLING, client->name, ts);
+ if (ret == 0)
+ ts->use_irq = 1;
+ else
+ dev_err(&client->dev, "request_irq failed\n");
+ }
+ ts->desc = irq_to_desc(ts_bak->client->irq);
+ hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ts->timer.function = sis_ts_timer_func;
+ if (!ts->use_irq)
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+ ts->early_suspend.suspend = sis_ts_early_suspend;
+ ts->early_suspend.resume = sis_ts_late_resume;
+ register_early_suspend(&ts->early_suspend);
+#endif
+ pr_info("sis_ts_probe: Start touchscreen %s in %s mode\n",
+ ts->input_dev->name,
+ ts->use_irq ? "interrupt" : "polling");
+ if (ts->use_irq) {
+#ifdef _INT_MODE_1
+ pr_info("sis_ts_probe: interrupt case 1 mode\n");
+#else
+ pr_info("sis_ts_probe: interrupt case 2 mode\n");
+#endif
+ }
+#ifdef _STD_RW_IO
+ ret = sis_setup_chardev(ts);
+ if (ret)
+ pr_err("sis_setup_chardev fail\n");
+#endif
+ pr_info("sis SIS_SLAVE_ADDR: %d\n", SIS_SLAVE_ADDR);
+ return 0;
+err_input_register_device_failed:
+ input_free_device(ts->input_dev);
+err_input_dev_alloc_failed:
+err_power_failed:
+ kfree(ts);
+err_alloc_data_failed:
+ return ret;
+}
+
+static int sis_ts_remove(struct i2c_client *client)
+{
+ struct sis_ts_data *ts = i2c_get_clientdata(client);
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ unregister_early_suspend(&ts->early_suspend);
+#endif
+#ifdef _STD_RW_IO
+ sis_deinit_chardev();
+#endif
+ if (ts->use_irq)
+ free_irq(client->irq, ts);
+ else
+ hrtimer_cancel(&ts->timer);
+ input_unregister_device(ts->input_dev);
+ kfree(ts);
+ return 0;
+}
+
+static int sis_ts_suspend(struct i2c_client *client, pm_message_t mesg)
+{
+ int ret = 0;
+ struct sis_ts_data *ts = i2c_get_clientdata(client);
+
+ TPInfo->pre_keybit_state = 0x0;
+
+ if (ts->use_irq) {
+ if (!irqd_irq_disabled(&ts->desc->irq_data))
+ disable_irq(client->irq);
+ } else
+ hrtimer_cancel(&ts->timer);
+ flush_workqueue(sis_wq); /*only flush sis_wq*/
+
+
+ if (ts->power) {
+ ret = ts->power(0);
+ if (ret < 0)
+ pr_err("sis_ts_suspend power off failed\n");
+ }
+
+ return 0;
+}
+
+static int sis_ts_resume(struct i2c_client *client)
+{
+ int ret = 0;
+ struct sis_ts_data *ts = i2c_get_clientdata(client);
+
+ if (ts->power) {
+ ret = ts->power(1);
+ if (ret < 0)
+ pr_err("sis_ts_resume power on failed\n");
+ }
+
+ if (ts->use_irq) {
+ if (irqd_irq_disabled(&ts->desc->irq_data))
+ enable_irq(client->irq);
+ } else
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+ return 0;
+}
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void sis_ts_early_suspend(struct early_suspend *h)
+{
+ struct sis_ts_data *ts;
+
+ TPInfo->pre_keybit_state = 0x0;
+ ts = container_of(h, struct sis_ts_data, early_suspend);
+ sis_ts_suspend(ts->client, PMSG_SUSPEND);
+}
+
+static void sis_ts_late_resume(struct early_suspend *h)
+{
+ struct sis_ts_data *ts;
+
+ ts = container_of(h, struct sis_ts_data, early_suspend);
+ sis_ts_resume(ts->client);
+}
+#endif
+
+#ifdef CONFIG_X86
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int sis_ts_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
+{
+ const char *type_name;
+
+ pr_info("sis_ts_detect\n");
+ type_name = "sis_i2c_ts";
+ strlcpy(info->type, type_name, I2C_NAME_SIZE);
+ return 0;
+}
+#endif
+
+static const struct i2c_device_id sis_ts_id[] = {
+ { SIS_I2C_NAME, 0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(i2c, sis_ts_id);
+
+static struct i2c_driver sis_ts_driver = {
+ .probe = sis_ts_probe,
+ .remove = sis_ts_remove,
+#ifndef CONFIG_HAS_EARLYSUSPEND
+ .suspend = sis_ts_suspend,
+ .resume = sis_ts_resume,
+#endif
+#ifdef CONFIG_X86
+ .class = I2C_CLASS_HWMON,
+ .detect = sis_ts_detect,
+ .address_list = normal_i2c,
+#endif
+ .id_table = sis_ts_id,
+ .driver = {
+ .name = SIS_I2C_NAME,
+ },
+};
+
+static int __init sis_ts_init(void)
+{
+ pr_info("sis_ts_init\n");
+ sis_wq = create_singlethread_workqueue("sis_wq");
+
+ if (!sis_wq)
+ return -ENOMEM;
+ return i2c_add_driver(&sis_ts_driver);
+}
+
+static void __exit sis_ts_exit(void)
+{
+ pr_info("sis_ts_exit\n");
+ i2c_del_driver(&sis_ts_driver);
+ if (sis_wq)
+ destroy_workqueue(sis_wq);
+}
+
+module_init(sis_ts_init);
+module_exit(sis_ts_exit);
+MODULE_DESCRIPTION("SiS 9200 Family Touchscreen Driver");
+MODULE_LICENSE("GPL");
diff --git a/linux-3.18.5/drivers/input/touchscreen/sis_i2c.h b/linux-3.18.5/drivers/input/touchscreen/sis_i2c.h
new file mode 100644
index 0000000..7639a52
--- /dev/null
+++ b/linux-3.18.5/drivers/input/touchscreen/sis_i2c.h
@@ -0,0 +1,173 @@
+/*
+ * include/linux/sis_i2c.h - platform data structure for SiS 9200 family
+ *
+ * Copyright (C) 2011 SiS, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ * Date: 2015/01/15
+ * Version: Android_v2.05.00-A639-1113
+ */
+#include <linux/version.h>
+
+#ifndef _LINUX_SIS_I2C_H
+#define _LINUX_SIS_I2C_H
+
+
+#define SIS_I2C_NAME "sis_i2c_ts"
+#define SIS_SLAVE_ADDR 0x5c
+/*10ms*/
+#define TIMER_NS 10000000
+#define MAX_FINGERS 10
+
+/* For standard R/W IO ( SiS firmware application )*/
+#define _STD_RW_IO /*ON/OFF*/
+
+/* Check data CRC */
+/*#define _CHECK_CRC*/ /*ON/OFF*/
+
+/* Interrupt setting and modes */
+#define _I2C_INT_ENABLE /*ON/OFF*/
+#define GPIO_IRQ 133
+
+/* Enable if use interrupt case 1 mode. */
+/* Disable if use interrupt case 2 mode. */
+/*#define _INT_MODE_1*/ /*ON/OFF*/
+
+/* Resolution mode */
+/*Constant value*/
+#define SIS_MAX_X 4095
+#define SIS_MAX_Y 4095
+
+#define ONE_BYTE 1
+#define FIVE_BYTE 5
+#define EIGHT_BYTE 8
+#define SIXTEEN_BYTE 16
+#define PACKET_BUFFER_SIZE 128
+
+#define SIS_CMD_NORMAL 0x0
+#define SIS_CMD_SOFTRESET 0x82
+#define SIS_CMD_RECALIBRATE 0x87
+#define SIS_CMD_POWERMODE 0x90
+#define MSK_TOUCHNUM 0x0f
+#define MSK_HAS_CRC 0x10
+#define MSK_DATAFMT 0xe0
+#define MSK_PSTATE 0x0f
+#define MSK_PID 0xf0
+#define RES_FMT 0x00
+#define FIX_FMT 0x40
+
+/* for new i2c format */
+#define TOUCHDOWN 0x3
+#define TOUCHUP 0x0
+#define MAX_BYTE 64
+#define PRESSURE_MAX 255
+
+/*Resolution diagonal */
+#define AREA_LENGTH_LONGER 5792
+/*((SIS_MAX_X^2) + (SIS_MAX_Y^2))^0.5*/
+#define AREA_LENGTH_SHORT 5792
+#define AREA_UNIT (5792/32)
+
+
+#define FORMAT_MODE 1
+
+#define MSK_NOBTN 0
+#define MSK_COMP 1
+#define MSK_BACK 2
+#define MSK_MENU 4
+#define MSK_HOME 8
+
+#define P_BYTECOUNT 0
+#define ALL_IN_ONE_PACKAGE 0x10
+#define IS_TOUCH(x) (x & 0x1)
+#define IS_HIDI2C(x) ((x & 0xF) == 0x06)
+#define IS_AREA(x) ((x >> 4) & 0x1)
+#define IS_PRESSURE(x) ((x >> 5) & 0x1)
+#define IS_SCANTIME(x) ((x >> 6) & 0x1)
+/*#define _DEBUG_PACKAGE*/ /*ON/OFF*/
+/*#define _DEBUG_REPORT*/ /*ON/OFF*/
+#define NORMAL_LEN_PER_POINT 6
+#define AREA_LEN_PER_POINT 2
+#define PRESSURE_LEN_PER_POINT 1
+
+#define TOUCH_FORMAT 0x1
+#define BUTTON_FORMAT 0x4
+#define HIDI2C_FORMAT 0x6
+#define P_REPORT_ID 2
+#define BUTTON_STATE 3
+#define BUTTON_KEY_COUNT 16
+#define BYTE_BYTECOUNT 2
+#define BYTE_COUNT 1
+#define BYTE_ReportID 1
+#define BYTE_CRC_HIDI2C 0
+#define BYTE_CRC_I2C 2
+#define BYTE_SCANTIME 2
+#define NO_TOUCH_BYTECOUNT 0x3
+
+/* TODO */
+#define TOUCH_POWER_PIN 0
+#define TOUCH_RESET_PIN 1
+
+/* CMD Define */
+#define BUF_ACK_PLACE_L 4
+#define BUF_ACK_PLACE_H 5
+#define BUF_ACK_L 0xEF
+#define BUF_ACK_H 0xBE
+#define BUF_NACK_L 0xAD
+#define BUF_NACK_H 0xDE
+#define BUF_CRC_PLACE 7
+
+/* SiS i2c error code */
+#define SIS_ERR -1
+#define SIS_ERR_ACCESS_USER_MEM -11 /* Access user memory fail */
+#define SIS_ERR_ALLOCATE_KERNEL_MEM -12 /* Allocate memory fail */
+#define SIS_ERR_CLIENT -13 /* Client not created */
+#define SIS_ERR_COPY_FROM_USER -14 /* Copy data from user fail */
+#define SIS_ERR_COPY_FROM_KERNEL -19 /* Copy data from kernel fail */
+#define SIS_ERR_TRANSMIT_I2C -21 /* Transmit error in I2C */
+
+struct sis_i2c_rmi_platform_data {
+ int (*power)(int on); /* Only valid in first array entry */
+};
+
+struct Point {
+ int id;
+ unsigned short x, y; /*uint16_t ?*/
+ uint16_t Pressure;
+ uint16_t Width;
+ uint16_t Height;
+};
+
+struct sisTP_driver_data {
+ int id;
+ int fingers;
+ uint8_t pre_keybit_state;
+ struct Point pt[MAX_FINGERS];
+};
+
+struct sis_ts_data {
+ int (*power)(int on);
+ int use_irq;
+ struct i2c_client *client;
+ struct input_dev *input_dev;
+ struct hrtimer timer;
+ struct irq_desc *desc;
+ struct work_struct work;
+ struct mutex mutex_wq;
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ struct early_suspend early_suspend;
+#endif
+};
+
+static int sis_ts_suspend(struct i2c_client *client, pm_message_t mesg);
+static int sis_ts_resume(struct i2c_client *client);
+
+#endif /* _LINUX_SIS_I2C_H */
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