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Message-ID: <8322374EB97AA24A95D0DDBFC8F1CA1DBF9E1B@SISMBEV01.sis.com.tw>
Date: Fri, 16 Jan 2015 18:59:00 +0800
From: 曾婷葳 (tammy_tseng) <tammy_tseng@....com>
To: <linux-kernel@...r.kernel.org>, <linux-input@...r.kernel.org>,
"Oliver Neukum" <oneukum@...e.de>
Cc: <tammy0524@...il.com>
Subject: RE: [PATCH 1/2] INPUT/HID: add touch support for SiS touch driver
Hey, Oliver
On Mon, Jan 12, 2015 at 7:50 PM, Oliver Neukum <oneukum@...e.de> wrote:
On Mon, 2015-01-12 at 18:53 +0800, 曾婷葳 (tammy_tseng) wrote:
> > (Skip the code diff...)
>
> Again macros for endianness
>
> And the driver has a great number of conditional compilations are they
> really needed? The driver as is has a number of issues and is hard to
> review due to the use of "//" for comments and a lot of conditional
> compilation and unnecessary variables used for constants. Could you
> fix this up and resubmit?
Thanks for the reply. I've modified the code (sis_i2c.c/sis_i2c.h/Kconfig/Makefile) to fix them.
Please help check them if anything needs to fix.
Thanks.
Tammy
---
diff --git a/linux-3.18.1/drivers/input/touchscreen/Kconfig b/linux-3.18.1/drivers/input/touchscreen/Kconfig
index e1d8003..401cd8b 100644
--- a/linux-3.18.1/drivers/input/touchscreen/Kconfig
+++ b/linux-3.18.1/drivers/input/touchscreen/Kconfig
@@ -962,4 +962,12 @@ 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-3.18.1/drivers/input/touchscreen/Makefile b/linux-3.18.1/drivers/input/touchscreen/Makefile
index 090e61c..67137af 100644
--- a/linux-3.18.1/drivers/input/touchscreen/Makefile
+++ b/linux-3.18.1/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-3.18.1/drivers/input/touchscreen/sis_i2c.c b/linux-3.18.1/drivers/input/touchscreen/sis_i2c.c
new file mode 100644
index 0000000..157f991
--- /dev/null
+++ b/linux-3.18.1/drivers/input/touchscreen/sis_i2c.c
@@ -0,0 +1,1267 @@
+/*
+ * SiS 9200 family I2C Touch Screen Controller Driver
+ *
+ * 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 <asm/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 int sis_char_devs_count = 1; /* device count */
+static int sis_char_major = 0;
+static struct cdev sis_char_cdev;
+static struct class *sis_char_class = NULL;
+#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 = 0;
+struct sisTP_driver_data *TPInfo = NULL;
+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 CONFIG_X86
+/* static const struct i2c_client_address_data addr_data; */
+/* Insmod parameters */
+static int sis_ts_detect(struct i2c_client *client, struct i2c_board_info *info);
+#endif
+
+#ifdef _CHECK_CRC
+uint16_t cal_crc (char* cmd, int start, int end);
+#endif
+
+static void PrintBuffer(int start, int length, char* buf)
+{
+ int i;
+ for ( i = start; i < length; i++ )
+ {
+ printk("%02x ", buf[i]);
+ if (i != 0 && i % 30 == 0)
+ printk("\n");
+ }
+ printk("\n");
+}
+
+int sis_command_for_write(struct i2c_client *client, int wlength, unsigned char *wdata)
+{
+ int ret = -1;
+ struct i2c_msg msg;
+
+ msg.addr = client->addr;
+ /* Write */
+ msg.flags = 0;
+ msg.len = wlength;
+ msg.buf = (unsigned char *)wdata;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+
+ return ret;
+}
+
+int sis_command_for_read(struct i2c_client *client, int rlength, unsigned char *rdata)
+{
+ int ret = -1;
+ struct i2c_msg msg;
+
+ msg.addr = client->addr;
+ /* Read */
+ msg.flags = I2C_M_RD;
+ msg.len = rlength;
+ msg.buf = rdata;
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+
+ return ret;
+}
+
+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;
+}
+
+int sis_ReadPacket(struct i2c_client *client, uint8_t cmd, uint8_t* buf)
+{
+ uint8_t tmpbuf[MAX_BYTE] = {0};
+#ifdef _CHECK_CRC
+ uint16_t buf_crc = 0;
+ uint16_t package_crc = 0;
+ int l_package_crc = 0;
+ int crc_end = 0;
+#endif
+ int ret = -1;
+ 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)
+ {
+ printk(KERN_ERR "sis_ReadPacket: Buf Overflow\n");
+ return -1;
+ }
+
+ ret = sis_command_for_read(client, MAX_BYTE, tmpbuf);
+
+#ifdef _DEBUG_PACKAGE
+ printk(KERN_INFO "chaoban test: Buf_Data [0~63] \n");
+ PrintBuffer(0, 64, tmpbuf);
+#endif
+
+ if(ret < 0 )
+ {
+ printk(KERN_ERR "sis_ReadPacket: i2c transfer error\n");
+ return ret;
+ }
+ /* error package length of receiving data */
+ else if (tmpbuf[P_BYTECOUNT] > MAX_BYTE)
+ {
+ printk(KERN_ERR "sis_ReadPacket: Error Bytecount\n");
+ return -1;
+ }
+
+ if (read_first)
+ {
+#ifdef _SUPPORT_BUTTON_TOUCH
+ /* access BUTTON TOUCH event and BUTTON NO TOUCH event */
+ if (tmpbuf[P_REPORT_ID] == BUTTON_FORMAT)
+ {
+ memcpy(&buf[0], &tmpbuf[0], 7);
+ return 0; /* touchnum is 0 */
+ }
+#endif
+ /* 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))
+ {
+ printk(KERN_ERR "sis_ReadPacket: Error Report_ID\n");
+ return -1;
+ }
+
+ 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 */
+ {
+ printk(KERN_ERR "sis_ReadPacket: delete crc error\n");
+ return -1;
+ }
+
+ 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)
+ {
+ printk(KERN_ERR "sis_ReadPacket: get error package\n");
+ return -1;
+ }
+ }
+
+#ifdef _CHECK_CRC
+ crc_end = p_count + (IS_SCANTIME(tmpbuf[P_REPORT_ID]) * 2);
+ buf_crc = cal_crc(tmpbuf, 2, crc_end); /* sub bytecount (2 byte) */
+ l_package_crc = p_count + 1 + (IS_SCANTIME(tmpbuf[P_REPORT_ID]) * 2);
+ package_crc = get_unaligned_le16(&tmpbuf[l_package_crc]);
+
+ if (buf_crc != package_crc)
+ {
+ printk(KERN_ERR "sis_ReadPacket: CRC Error\n");
+ return -1;
+ }
+#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;
+}
+
+
+int check_gpio_interrupt(void)
+{
+ int ret = 0;
+
+ /* CHECK GPIO INTERRUPT STATUS BY YOUR PLATFORM SETTING. */
+ ret = gpio_get_value(GPIO_IRQ);
+
+ return ret;
+}
+
+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)
+ {
+ printk(KERN_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;
+ }
+}
+
+
+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 = -1;
+ 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;
+#ifdef _SUPPORT_BUTTON_TOUCH
+ int button_key;
+ uint8_t button_buf[10] = {0};
+#endif
+
+#ifdef _ANDROID_4
+ bool all_touch_up = true;
+#endif
+
+ mutex_lock(&ts->mutex_wq);
+
+ /* I2C or SMBUS block data read */
+ ret = sis_ReadPacket(ts->client, SIS_CMD_NORMAL, buf);
+
+#ifdef _SUPPORT_BUTTON_TOUCH
+ sis_ReadPacket(ts->client, SIS_CMD_NORMAL, button_buf);
+#endif
+
+ /* Error Number */
+ if (ret < 0)
+ {
+ goto err_free_allocate;
+ }
+#ifdef _SUPPORT_BUTTON_TOUCH
+ /* access BUTTON TOUCH event and BUTTON NO TOUCH even */
+ else if (button_buf[P_REPORT_ID] == BUTTON_FORMAT)
+ {
+ button_key = get_unaligned_le16(&button_buf[BUTTON_STATE]);
+ ts_report_key(ts->client, button_key);
+ }
+#endif
+ /* 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
+ { /* Calc point status */
+ pstatus = BYTE_BYTECOUNT + BYTE_ReportID + (i * point_unit);
+ }
+
+ 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] & 0xff;
+ TPInfo->pt[i].Height = buf[p_area + 1] & 0xff;
+ }
+ 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
+ {
+ printk(KERN_ERR "sis_ts_work_func: Error Touch Status\n");
+ goto err_free_allocate;
+ }
+
+ TPInfo->pt[i].id = (buf[pstatus + 1]);
+ TPInfo->pt[i].x = ((buf[px] & 0xff) | ((buf[px + 1] & 0xff)<< 8));
+ TPInfo->pt[i].y = ((buf[py] & 0xff) | ((buf[py + 1] & 0xff)<< 8));
+ }
+
+#ifdef _DEBUG_REPORT
+ for (i = 0; i < TPInfo->fingers; i++)
+ {
+ printk(KERN_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 */
+#ifdef _ANDROID_4
+ 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);
+ 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);
+ }
+#else
+ i = 0;
+ do
+ {
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, TPInfo->pt[i].Pressure);
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, TPInfo->pt[i].Width);
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MINOR, TPInfo->pt[i].Height);
+ 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);
+ i++;
+ }
+ while ((i < TPInfo->fingers) && (i < MAX_FINGERS));
+#endif
+ input_sync(ts->input_dev);
+
+err_free_allocate:
+
+ if (ts->use_irq)
+ {
+/* case 1 mode */
+#ifdef _INT_MODE_1
+ /*TODO: After interrupt status low, read i2c bus data by polling, until interrupt status is high */
+ ret = check_gpio_interrupt(); /* 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)
+ {
+ ts_report_key(ts->client, 0x0); /* clear for interrupt */
+ }
+
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts->desc->status & IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#else
+ if ((ts->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#endif
+ {
+ enable_irq(ts->client->irq);
+ }
+ }
+/* case 2 mode */
+#else
+
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts->desc->status & IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#else
+ if ((ts->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#endif
+ {
+ enable_irq(ts->client->irq);
+ }
+#endif
+ }
+
+ mutex_unlock(&ts->mutex_wq);
+ return;
+}
+
+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 ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts->desc->status & IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#else
+ if ((ts->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#endif
+ {
+ 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 */
+ ret = gpio_request(GPIO_IRQ, "GPIO_133"); /* ex. GPIO_133 for interrupt mode */
+ if (ret < 0)
+ {
+ /* Set Active Low. Please reference the file include/linux/interrupt.h */
+ }
+ /* setting gpio direction here OR boardinfo file*/
+
+#else
+ ret = -1;
+#endif
+ return ret;
+}
+
+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;
+}
+
+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;
+}
+
+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;
+
+ printk(KERN_INFO "sis_cdev_write.\n");
+
+ if (ts_bak == 0)
+ return -13;
+
+ ret = access_ok(VERIFY_WRITE, buf, BUFFER_SIZE);
+ if (!ret) {
+ printk(KERN_ERR "cannot access user space memory\n");
+ return -11;
+ }
+
+ kdata = kmalloc(BUFFER_SIZE, GFP_KERNEL);
+ if (kdata == 0)
+ return -12;
+
+ ret = copy_from_user(kdata, buf, BUFFER_SIZE);
+ if (ret) {
+ printk(KERN_ERR "copy_from_user fail\n");
+ kfree(kdata);
+ return -14;
+ }
+#if 0
+ PrintBuffer(0, count, kdata);
+#endif
+
+ cmd = kdata[6];
+
+/* Write & Read */
+ ret = sis_command_for_write(ts_bak->client, count, kdata);
+ if (ret < 0) {
+ printk(KERN_ERR "i2c_transfer write error %d\n", ret);
+ kfree(kdata);
+ return -21;
+ }
+
+ if ( copy_to_user((char*) buf, kdata, BUFFER_SIZE ) )
+ {
+ printk(KERN_ERR "copy_to_user fail\n" );
+ ret = -19;
+ }
+
+ 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;
+ char cmd;
+ int i;
+
+ printk(KERN_INFO "sis_cdev_read.\n");
+
+ if (ts_bak == 0)
+ return -13;
+
+ ret = access_ok(VERIFY_WRITE, buf, BUFFER_SIZE);
+ if (!ret) {
+ printk(KERN_ERR "cannot access user space memory\n");
+ return -11;
+ }
+
+ kdata = kmalloc(BUFFER_SIZE, GFP_KERNEL);
+ if (kdata == 0)
+ return -12;
+
+ ret = copy_from_user(kdata, buf, BUFFER_SIZE);
+ if (ret) {
+ printk(KERN_ERR "copy_from_user fail\n");
+ kfree(kdata);
+ return -14;
+ }
+#if 0
+ PrintBuffer(0, count, kdata);
+#endif
+ cmd = kdata[6];
+ /* for making sure AP communicates with SiS driver */
+ if(cmd == 0xa2)
+ {
+ kdata[0] = 5;
+ kdata[1] = 0;
+ kdata[3] = 'S';
+ kdata[4] = 'i';
+ kdata[5] = 'S';
+ if ( copy_to_user((char*) buf, kdata, BUFFER_SIZE ) )
+ {
+ printk(KERN_ERR "copy_to_user fail\n" );
+ kfree( kdata );
+ return -19;
+ }
+
+ kfree( kdata );
+ return 3;
+ }
+/* Write & Read */
+ ret = sis_command_for_read(ts_bak->client, MAX_BYTE, kdata);
+ if (ret < 0) {
+ printk(KERN_ERR "i2c_transfer read error %d\n", ret);
+ kfree(kdata);
+ return -21;
+ }
+
+ ret = kdata[0] | (kdata[1] << 8);
+
+ printk(KERN_INFO "%d\n", ret);
+
+ for ( i = 0; i < ret && i < BUFFER_SIZE; i++ )
+ {
+ printk("%02x ", kdata[i]);
+ }
+
+ printk( "\n" );
+
+ if ( copy_to_user((char*) buf, kdata, BUFFER_SIZE ) )
+ {
+ printk(KERN_ERR "copy_to_user fail\n" );
+ ret = -19;
+ }
+
+ kfree( kdata );
+
+ return ret;
+}
+
+#undef BUFFER_SIZE
+
+static int sis_cdev_open(struct inode *inode, struct file *filp)
+{
+ printk(KERN_INFO "sis_cdev_open.\n");
+ if ( ts_bak == 0 )
+ return -13;
+
+ msleep(200);
+ if (ts_bak->use_irq)
+ {
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts_bak->desc->status & IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#else
+ if ((ts_bak->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#endif
+ {
+ disable_irq(ts_bak->client->irq);
+ }
+ else
+ {
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ printk(KERN_INFO "sis_cdev_open: IRQ_STATUS: %x\n",(ts_bak->desc->status & IRQ_DISABLED));
+#else
+ printk(KERN_INFO "sis_cdev_open: IRQ_STATUS: %x\n",(ts_bak->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED));
+#endif
+ }
+ }
+ hrtimer_cancel(&ts_bak->timer);
+
+ /* only flush sis_wq */
+ flush_workqueue(sis_wq);
+
+ msleep(200);
+
+ return 0; /* success */
+}
+
+static int sis_cdev_release(struct inode *inode, struct file *filp)
+{
+ printk(KERN_INFO "sis_cdev_release.\n");
+
+ msleep(200);
+
+ if (ts_bak == 0)
+ return -13;
+
+ if (ts_bak->use_irq)
+ {
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts_bak->desc->status & IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#else
+ if ((ts_bak->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#endif
+ {
+ 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 alloc_ret = 0;
+ int cdev_err = 0;
+ int input_err = 0;
+ struct device *class_dev = NULL;
+ void *ptr_err;
+
+ printk("sis_setup_chardev.\n");
+
+ if (ts == NULL)
+ {
+ input_err = -ENOMEM;
+ goto error;
+ }
+ /* dynamic allocate driver handle */
+ alloc_ret = alloc_chrdev_region(&dev, 0, sis_char_devs_count, DEVICE_NAME);
+ if (alloc_ret)
+ goto error;
+
+ sis_char_major = MAJOR(dev);
+ cdev_init(&sis_char_cdev, &sis_cdev_fops);
+ sis_char_cdev.owner = THIS_MODULE;
+ cdev_err = cdev_add(&sis_char_cdev, MKDEV(sis_char_major, 0), sis_char_devs_count);
+
+ if (cdev_err)
+ goto error;
+
+ printk(KERN_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(ptr_err = sis_char_class))
+ {
+ goto err2;
+ }
+
+ class_dev = device_create(sis_char_class, NULL, MKDEV(sis_char_major, 0), NULL, DEVICE_NAME);
+
+ if(IS_ERR(ptr_err = class_dev))
+ {
+ goto err;
+ }
+
+ return 0;
+error:
+ if (cdev_err == 0)
+ cdev_del(&sis_char_cdev);
+ if (alloc_ret == 0)
+ unregister_chrdev_region(MKDEV(sis_char_major, 0), sis_char_devs_count);
+ if(input_err != 0)
+ {
+ printk("sis_ts_bak error!\n");
+ }
+err:
+ device_destroy(sis_char_class, MKDEV(sis_char_major, 0));
+err2:
+ class_destroy(sis_char_class);
+ return -1;
+}
+#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;
+
+ printk(KERN_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)
+ {
+ printk(KERN_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;
+ printk(KERN_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);
+
+#ifdef _ANDROID_4
+ 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);
+#else
+ set_bit(ABS_MT_TOUCH_MAJOR, ts->input_dev->absbit);
+ set_bit(ABS_MT_WIDTH_MAJOR, ts->input_dev->absbit);
+ set_bit(ABS_MT_WIDTH_MINOR, ts->input_dev->absbit);
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, PRESSURE_MAX, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, AREA_LENGTH_LONGER, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MINOR, 0, AREA_LENGTH_SHORT, 0, 0);
+#endif
+
+ 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)
+ {
+ printk(KERN_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)
+ {
+
+ }
+ else
+ {
+ 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
+ printk(KERN_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
+ printk(KERN_INFO "sis_ts_probe: interrupt case 1 mode\n");
+#else
+ printk(KERN_INFO "sis_ts_probe: interrupt case 2 mode\n");
+#endif
+ }
+
+#ifdef _STD_RW_IO
+ ret = sis_setup_chardev(ts);
+ if(ret)
+ {
+ printk( KERN_INFO"sis_setup_chardev fail\n");
+ }
+#endif
+
+ printk( KERN_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
+ 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 ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts->desc->status & IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#else
+ if ((ts->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_ENABLED)
+#endif
+ {
+ disable_irq(client->irq);
+ }
+ }
+ else
+ hrtimer_cancel(&ts->timer);
+ /* only flush sis_wq */
+ flush_workqueue(sis_wq);
+
+ if (ts->power) {
+ ret = ts->power(0);
+ if (ret < 0)
+ printk(KERN_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)
+ printk(KERN_ERR "sis_ts_resume power on failed\n");
+ }
+
+ if (ts->use_irq)
+ {
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+ if ((ts->desc->status & IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#else
+ if ((ts->desc->irq_data.state_use_accessors & IRQD_IRQ_DISABLED) == IRQ_STATUS_DISABLED)
+#endif
+ {
+ 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
+
+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)
+{
+ printk( KERN_INFO "sis_ts_init\n" );
+
+ sis_wq = create_singlethread_workqueue("sis_wq");
+
+ if (!sis_wq)
+ return -ENOMEM;
+
+ return i2c_add_driver(&sis_ts_driver);
+}
+
+#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;
+
+ printk(KERN_INFO "sis_ts_detect\n");
+
+ type_name = "sis_i2c_ts";
+ strlcpy(info->type, type_name, I2C_NAME_SIZE);
+
+ return 0;
+}
+#endif
+
+static void __exit sis_ts_exit(void)
+{
+#ifdef _STD_RW_IO
+ dev_t dev;
+#endif
+
+ printk(KERN_INFO "sis_ts_exit\n");
+
+ i2c_del_driver(&sis_ts_driver);
+
+ if (sis_wq)
+ destroy_workqueue(sis_wq);
+
+#ifdef _STD_RW_IO
+ dev = MKDEV(sis_char_major, 0);
+ cdev_del(&sis_char_cdev);
+ unregister_chrdev_region(dev, sis_char_devs_count);
+ device_destroy(sis_char_class, MKDEV(sis_char_major, 0));
+ class_destroy(sis_char_class);
+#endif
+}
+
+module_init(sis_ts_init);
+module_exit(sis_ts_exit);
+MODULE_DESCRIPTION("SiS 9200 Family Touchscreen Driver");
+MODULE_LICENSE("GPL");
diff --git a/linux-3.18.1/drivers/input/touchscreen/sis_i2c.h b/linux-3.18.1/drivers/input/touchscreen/sis_i2c.h
new file mode 100644
index 0000000..c1d65c4
--- /dev/null
+++ b/linux-3.18.1/drivers/input/touchscreen/sis_i2c.h
@@ -0,0 +1,215 @@
+/*
+ * 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
+#define TIMER_NS 10000000 //10ms
+#define MAX_FINGERS 10
+
+
+/* For Android 4.0 */
+/* Only for Linux kernel 2.6.34 and later */
+#define _ANDROID_4 // ON/OFF
+
+/* For standard R/W IO*/
+#define _STD_RW_IO // 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
+
+/* IRQ STATUS */
+#if ( LINUX_VERSION_CODE < KERNEL_VERSION (2, 6, 39) )
+#define IRQ_STATUS_DISABLED 0x200
+#else
+#define IRQ_STATUS_DISABLED (1<<16)
+#endif
+#define IRQ_STATUS_ENABLED 0x0
+
+/* 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
+
+#ifdef _ANDROID_4
+#define AREA_LENGTH_LONGER 5792 //Resolution diagonal
+#define AREA_LENGTH_SHORT 5792 // ((SIS_MAX_X^2) + (SIS_MAX_Y^2))^0.5
+#define AREA_UNIT (5792/32)
+#else
+#define AREA_LENGTH_LONGER 31
+#define AREA_LENGTH_SHORT 31
+#endif
+
+
+#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 & 0x6)
+#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 _CHECK_CRC // ON/OFF
+//#define _SUPPORT_BUTTON_TOUCH // ON/OFF
+#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
+
+
+
+struct sis_i2c_rmi_platform_data {
+ int (*power)(int on); /* Only valid in first array entry */
+};
+
+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
+};
+
+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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