On Thu, 2015-02-12 at 14:07 +0800, 曾婷葳 (tammy_tseng) wrote:
> 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.
Sorry, I accidentally reviewed the old version first.
>
> 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
> +};
If there are other users of this CRC polynom we'd like to have it in
a sparate module.
> +
> +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]));
This is double. You must use only get_unaligned_le16().
> + 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;
Please use an endianness macro.
> +}*/
> +
> +#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))
Race condition
> + 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);
memory leak in error case. TPinfo isn't freed.
> +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);
The work can still be queued.
> + 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 */
Stop this. You _must_ use the symbolic names the kernel provides.
> +
> +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 */
--
Oliver Neukum <oneu...@suse.de>
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