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authorYuval Adam <_@yuv.al>2017-08-30 08:25:59 +0000
committerYuval Adam <_@yuv.al>2017-08-30 08:25:59 +0000
commit8e4bff4cab0ddac6060645b0715210484d02ff40 (patch)
tree3a5c3024371a04692a3a6d9974d001cdff8ebf84 /drivers/input/touchscreen/goodix/gt9xx.c
Initial file dump from open source releaseHEADmaster
Diffstat (limited to 'drivers/input/touchscreen/goodix/gt9xx.c')
-rw-r--r--drivers/input/touchscreen/goodix/gt9xx.c2408
1 files changed, 2408 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/goodix/gt9xx.c b/drivers/input/touchscreen/goodix/gt9xx.c
new file mode 100644
index 00000000..71befd38
--- /dev/null
+++ b/drivers/input/touchscreen/goodix/gt9xx.c
@@ -0,0 +1,2408 @@
+/* drivers/input/touchscreen/gt9xx.c
+ *
+ * 2010 - 2013 Goodix Technology.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be a reference
+ * to you, when you are integrating the GOODiX's CTP IC into your system,
+ * 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.
+ *
+ * Version: 2.0
+ * Authors: andrew@goodix.com, meta@goodix.com
+ * Release Date: 2013/04/25
+ * Revision record:
+ * V1.0:
+ * first Release. By Andrew, 2012/08/31
+ * V1.2:
+ * modify gtp_reset_guitar,slot report,tracking_id & 0x0F. By Andrew, 2012/10/15
+ * V1.4:
+ * modify gt9xx_update.c. By Andrew, 2012/12/12
+ * V1.6:
+ * 1. new heartbeat/esd_protect mechanism(add external watchdog)
+ * 2. doze mode, sliding wakeup
+ * 3. 3 more cfg_group(GT9 Sensor_ID: 0~5)
+ * 3. config length verification
+ * 4. names & comments
+ * By Meta, 2013/03/11
+ * V1.8:
+ * 1. pen/stylus identification
+ * 2. read double check & fixed config support
+ * 3. new esd & slide wakeup optimization
+ * By Meta, 2013/06/08
+ * V2.0:
+ * 1. compatible with GT9XXF
+ * 2. send config after resume
+ * By Meta, 2013/08/06
+ */
+
+#include <linux/irq.h>
+#include "gt9xx.h"
+
+#if GTP_ICS_SLOT_REPORT
+#include <linux/input/mt.h>
+#endif
+
+static const char *goodix_ts_name = GTP_I2C_NAME;
+static struct workqueue_struct *goodix_wq;
+struct i2c_client * i2c_connect_client = NULL;
+u8 config[GTP_CONFIG_MAX_LENGTH + GTP_ADDR_LENGTH]
+= {GTP_REG_CONFIG_DATA >> 8, GTP_REG_CONFIG_DATA & 0xff};
+
+#if GTP_HAVE_TOUCH_KEY
+static const u16 touch_key_array[] = GTP_KEY_TAB;
+#define GTP_MAX_KEY_NUM (sizeof(touch_key_array)/sizeof(touch_key_array[0]))
+
+#if GTP_DEBUG_ON
+static const int key_codes[] = {KEY_HOME, KEY_BACK, KEY_MENU, KEY_SEARCH};
+static const char *key_names[] = {"Key_Home", "Key_Back", "Key_Menu", "Key_Search"};
+#endif
+
+#endif
+
+static s8 gtp_i2c_test(struct i2c_client *client);
+void gtp_reset_guitar(struct i2c_client *client, s32 ms);
+s32 gtp_send_cfg(struct i2c_client *client);
+void gtp_int_sync(s32 ms);
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void goodix_ts_early_suspend(struct early_suspend *h);
+static void goodix_ts_late_resume(struct early_suspend *h);
+#endif
+
+#if GTP_CREATE_WR_NODE
+extern s32 init_wr_node(struct i2c_client*);
+extern void uninit_wr_node(void);
+#endif
+
+#if GTP_AUTO_UPDATE
+extern u8 gup_init_update_proc(struct goodix_ts_data *);
+#endif
+
+#if GTP_ESD_PROTECT
+static struct delayed_work gtp_esd_check_work;
+static struct workqueue_struct * gtp_esd_check_workqueue = NULL;
+static void gtp_esd_check_func(struct work_struct *);
+static s32 gtp_init_ext_watchdog(struct i2c_client *client);
+void gtp_esd_switch(struct i2c_client *, s32);
+#endif
+
+//*********** For GT9XXF Start **********//
+#if GTP_COMPATIBLE_MODE
+extern s32 i2c_read_bytes(struct i2c_client *client, u16 addr, u8 *buf, s32 len);
+extern s32 i2c_write_bytes(struct i2c_client *client, u16 addr, u8 *buf, s32 len);
+extern s32 gup_clk_calibration(void);
+extern s32 gup_fw_download_proc(void *dir, u8 dwn_mode);
+extern u8 gup_check_fs_mounted(char *path_name);
+
+void gtp_recovery_reset(struct i2c_client *client);
+static s32 gtp_esd_recovery(struct i2c_client *client);
+s32 gtp_fw_startup(struct i2c_client *client);
+static s32 gtp_main_clk_proc(struct goodix_ts_data *ts);
+static s32 gtp_bak_ref_proc(struct goodix_ts_data *ts, u8 mode);
+#endif
+//********** For GT9XXF End **********//
+
+#if GTP_SLIDE_WAKEUP
+typedef enum {
+ DOZE_DISABLED = 0,
+ DOZE_ENABLED = 1,
+ DOZE_WAKEUP = 2,
+} DOZE_T;
+static DOZE_T doze_status = DOZE_DISABLED;
+static s8 gtp_enter_doze(struct goodix_ts_data *ts);
+#endif
+
+static u8 chip_gt9xxs = 0; // true if ic is gt9xxs, like gt915s
+u8 grp_cfg_version = 0;
+
+/*******************************************************
+Function:
+ Read data from the i2c slave device.
+Input:
+ client: i2c device.
+ buf[0~1]: read start address.
+ buf[2~len-1]: read data buffer.
+ len: GTP_ADDR_LENGTH + read bytes count
+Output:
+ numbers of i2c_msgs to transfer:
+ 2: succeed, otherwise: failed
+*********************************************************/
+s32 gtp_i2c_read(struct i2c_client *client, u8 *buf, s32 len)
+{
+ struct i2c_msg msgs[2];
+ s32 ret=-1;
+ s32 retries = 0;
+
+ GTP_DEBUG_FUNC();
+
+ msgs[0].flags = !I2C_M_RD;
+ msgs[0].addr = client->addr;
+ msgs[0].len = GTP_ADDR_LENGTH;
+ msgs[0].buf = &buf[0];
+ //msgs[0].scl_rate = 300 * 1000; // for Rockchip, etc.
+
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].addr = client->addr;
+ msgs[1].len = len - GTP_ADDR_LENGTH;
+ msgs[1].buf = &buf[GTP_ADDR_LENGTH];
+ //msgs[1].scl_rate = 300 * 1000;
+
+ while(retries < 5) {
+ ret = i2c_transfer(client->adapter, msgs, 2);
+ if(ret == 2)break;
+ retries++;
+ }
+ if((retries >= 5)) {
+#if GTP_COMPATIBLE_MODE
+ struct goodix_ts_data *ts = i2c_get_clientdata(client);
+#endif
+
+#if GTP_SLIDE_WAKEUP
+ // reset chip would quit doze mode
+ if (DOZE_ENABLED == doze_status) {
+ return ret;
+ }
+#endif
+ GTP_ERROR("I2C Read: 0x%04X, %d bytes failed, errcode: %d! Process reset.", (((u16)(buf[0] << 8)) | buf[1]), len-2, ret);
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ gtp_recovery_reset(client);
+ } else
+#endif
+ {
+ gtp_reset_guitar(client, 10);
+ }
+ }
+ return ret;
+}
+
+
+
+/*******************************************************
+Function:
+ Write data to the i2c slave device.
+Input:
+ client: i2c device.
+ buf[0~1]: write start address.
+ buf[2~len-1]: data buffer
+ len: GTP_ADDR_LENGTH + write bytes count
+Output:
+ numbers of i2c_msgs to transfer:
+ 1: succeed, otherwise: failed
+*********************************************************/
+s32 gtp_i2c_write(struct i2c_client *client,u8 *buf,s32 len)
+{
+ struct i2c_msg msg;
+ s32 ret = -1;
+ s32 retries = 0;
+
+ GTP_DEBUG_FUNC();
+
+ msg.flags = !I2C_M_RD;
+ msg.addr = client->addr;
+ msg.len = len;
+ msg.buf = buf;
+ //msg.scl_rate = 300 * 1000; // for Rockchip, etc
+
+ while(retries < 5) {
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret == 1)break;
+ retries++;
+ }
+ if((retries >= 5)) {
+#if GTP_COMPATIBLE_MODE
+ struct goodix_ts_data *ts = i2c_get_clientdata(client);
+#endif
+
+#if GTP_SLIDE_WAKEUP
+ if (DOZE_ENABLED == doze_status) {
+ return ret;
+ }
+#endif
+ GTP_ERROR("I2C Write: 0x%04X, %d bytes failed, errcode: %d! Process reset.", (((u16)(buf[0] << 8)) | buf[1]), len-2, ret);
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ gtp_recovery_reset(client);
+ } else
+#endif
+ {
+ gtp_reset_guitar(client, 10);
+ }
+ }
+ return ret;
+}
+
+
+/*******************************************************
+Function:
+ i2c read twice, compare the results
+Input:
+ client: i2c device
+ addr: operate address
+ rxbuf: read data to store, if compare successful
+ len: bytes to read
+Output:
+ FAIL: read failed
+ SUCCESS: read successful
+*********************************************************/
+s32 gtp_i2c_read_dbl_check(struct i2c_client *client, u16 addr, u8 *rxbuf, int len)
+{
+ u8 buf[16] = {0};
+ u8 confirm_buf[16] = {0};
+ u8 retry = 0;
+
+ while (retry++ < 3) {
+ memset(buf, 0xAA, 16);
+ buf[0] = (u8)(addr >> 8);
+ buf[1] = (u8)(addr & 0xFF);
+ gtp_i2c_read(client, buf, len + 2);
+
+ memset(confirm_buf, 0xAB, 16);
+ confirm_buf[0] = (u8)(addr >> 8);
+ confirm_buf[1] = (u8)(addr & 0xFF);
+ gtp_i2c_read(client, confirm_buf, len + 2);
+
+ if (!memcmp(buf, confirm_buf, len+2)) {
+ memcpy(rxbuf, confirm_buf+2, len);
+ return SUCCESS;
+ }
+ }
+ GTP_ERROR("I2C read 0x%04X, %d bytes, double check failed!", addr, len);
+ return FAIL;
+}
+
+/*******************************************************
+Function:
+ Send config.
+Input:
+ client: i2c device.
+Output:
+ result of i2c write operation.
+ 1: succeed, otherwise: failed
+*********************************************************/
+
+s32 gtp_send_cfg(struct i2c_client *client)
+{
+ s32 ret = 2;
+
+#if GTP_DRIVER_SEND_CFG
+ s32 retry = 0;
+ struct goodix_ts_data *ts = i2c_get_clientdata(client);
+
+ if (ts->fixed_cfg) {
+ GTP_INFO("Ic fixed config, no config sent!");
+ return 0;
+ } else if (ts->pnl_init_error) {
+ GTP_INFO("Error occured in init_panel, no config sent");
+ return 0;
+ }
+
+ GTP_INFO("Driver send config.");
+ for (retry = 0; retry < 5; retry++) {
+ ret = gtp_i2c_write(client, config , GTP_CONFIG_MAX_LENGTH + GTP_ADDR_LENGTH);
+ if (ret > 0) {
+ break;
+ }
+ }
+#endif
+ return ret;
+}
+/*******************************************************
+Function:
+ Disable irq function
+Input:
+ ts: goodix i2c_client private data
+Output:
+ None.
+*********************************************************/
+void gtp_irq_disable(struct goodix_ts_data *ts)
+{
+ unsigned long irqflags;
+
+ GTP_DEBUG_FUNC();
+
+ spin_lock_irqsave(&ts->irq_lock, irqflags);
+ if (!ts->irq_is_disable) {
+ ts->irq_is_disable = 1;
+ disable_irq_nosync(ts->client->irq);
+ }
+ spin_unlock_irqrestore(&ts->irq_lock, irqflags);
+}
+
+/*******************************************************
+Function:
+ Enable irq function
+Input:
+ ts: goodix i2c_client private data
+Output:
+ None.
+*********************************************************/
+void gtp_irq_enable(struct goodix_ts_data *ts)
+{
+ unsigned long irqflags = 0;
+
+ GTP_DEBUG_FUNC();
+
+ spin_lock_irqsave(&ts->irq_lock, irqflags);
+ if (ts->irq_is_disable) {
+ enable_irq(ts->client->irq);
+ ts->irq_is_disable = 0;
+ }
+ spin_unlock_irqrestore(&ts->irq_lock, irqflags);
+}
+
+
+/*******************************************************
+Function:
+ Report touch point event
+Input:
+ ts: goodix i2c_client private data
+ id: trackId
+ x: input x coordinate
+ y: input y coordinate
+ w: input pressure
+Output:
+ None.
+*********************************************************/
+static void gtp_touch_down(struct goodix_ts_data* ts,s32 id,s32 x,s32 y,s32 w)
+{
+#if GTP_CHANGE_X2Y
+ GTP_SWAP(x, y);
+#endif
+
+#if GTP_ICS_SLOT_REPORT
+ input_mt_slot(ts->input_dev, id);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, id);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, w);
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
+#else
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, w);
+ input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, w);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, id);
+ input_mt_sync(ts->input_dev);
+#endif
+
+ GTP_DEBUG("ID:%d, X:%d, Y:%d, W:%d", id, x, y, w);
+}
+
+/*******************************************************
+Function:
+ Report touch release event
+Input:
+ ts: goodix i2c_client private data
+Output:
+ None.
+*********************************************************/
+static void gtp_touch_up(struct goodix_ts_data* ts, s32 id)
+{
+#if GTP_ICS_SLOT_REPORT
+ input_mt_slot(ts->input_dev, id);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, -1);
+ GTP_DEBUG("Touch id[%2d] release!", id);
+#else
+ //input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0);
+ //input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0);
+ input_mt_sync(ts->input_dev);
+#endif
+}
+
+
+/*******************************************************
+Function:
+ Goodix touchscreen work function
+Input:
+ work: work struct of goodix_workqueue
+Output:
+ None.
+*********************************************************/
+static void goodix_ts_work_func(struct work_struct *work)
+{
+ u8 end_cmd[3] = {GTP_READ_COOR_ADDR >> 8, GTP_READ_COOR_ADDR & 0xFF, 0};
+ u8 point_data[2 + 1 + 8 * GTP_MAX_TOUCH + 1]= {GTP_READ_COOR_ADDR >> 8, GTP_READ_COOR_ADDR & 0xFF};
+ u8 touch_num = 0;
+ u8 finger = 0;
+ static u16 pre_touch = 0;
+ static u8 pre_key = 0;
+#if GTP_WITH_PEN
+ static u8 pre_pen = 0;
+#endif
+ u8 key_value = 0;
+ u8* coor_data = NULL;
+ s32 input_x = 0;
+ s32 input_y = 0;
+ s32 input_w = 0;
+ s32 id = 0;
+ s32 i = 0;
+ s32 ret = -1;
+ struct goodix_ts_data *ts = NULL;
+
+#if GTP_COMPATIBLE_MODE
+ u8 rqst_buf[3] = {0x80, 0x43}; // for GT9XXF
+#endif
+
+#if GTP_SLIDE_WAKEUP
+ u8 doze_buf[3] = {0x81, 0x4B};
+#endif
+
+ GTP_DEBUG_FUNC();
+ ts = container_of(work, struct goodix_ts_data, work);
+ if (ts->enter_update) {
+ return;
+ }
+#if GTP_SLIDE_WAKEUP
+ if (DOZE_ENABLED == doze_status) {
+ ret = gtp_i2c_read(i2c_connect_client, doze_buf, 3);
+ GTP_DEBUG("0x814B = 0x%02X", doze_buf[2]);
+ if (ret > 0) {
+ if (doze_buf[2] == 0xAA) {
+ GTP_INFO("Forward slide to light up the screen!");
+ doze_status = DOZE_WAKEUP;
+ input_report_key(ts->input_dev, KEY_POWER, 1);
+ input_sync(ts->input_dev);
+ input_report_key(ts->input_dev, KEY_POWER, 0);
+ input_sync(ts->input_dev);
+ // clear 0x814B
+ doze_buf[2] = 0x00;
+ gtp_i2c_write(i2c_connect_client, doze_buf, 3);
+ } else if (doze_buf[2] == 0xBB) {
+ GTP_INFO("Backward slide to light up the screen!");
+ doze_status = DOZE_WAKEUP;
+ input_report_key(ts->input_dev, KEY_POWER, 1);
+ input_sync(ts->input_dev);
+ input_report_key(ts->input_dev, KEY_POWER, 0);
+ input_sync(ts->input_dev);
+ // clear 0x814B
+ doze_buf[2] = 0x00;
+ gtp_i2c_write(i2c_connect_client, doze_buf, 3);
+ } else if (0xC0 == (doze_buf[2] & 0xC0)) {
+ GTP_INFO("Double click to light up the screen!");
+ doze_status = DOZE_WAKEUP;
+ input_report_key(ts->input_dev, KEY_POWER, 1);
+ input_sync(ts->input_dev);
+ input_report_key(ts->input_dev, KEY_POWER, 0);
+ input_sync(ts->input_dev);
+ // clear 0x814B
+ doze_buf[2] = 0x00;
+ gtp_i2c_write(i2c_connect_client, doze_buf, 3);
+ } else {
+ gtp_enter_doze(ts);
+ }
+ }
+ if (ts->use_irq) {
+ gtp_irq_enable(ts);
+ }
+ return;
+ }
+#endif
+
+ ret = gtp_i2c_read(ts->client, point_data, 12);
+ if (ret < 0) {
+ GTP_ERROR("I2C transfer error. errno:%d\n ", ret);
+ goto exit_work_func;
+ }
+
+ finger = point_data[GTP_ADDR_LENGTH];
+
+#if GTP_COMPATIBLE_MODE
+ // GT9XXF
+ if ((finger == 0x00) && (CHIP_TYPE_GT9F == ts->chip_type)) { // request arrived
+ ret = gtp_i2c_read(ts->client, rqst_buf, 3);
+ if (ret < 0) {
+ GTP_ERROR("Read request status error!");
+ goto exit_work_func;
+ }
+
+ switch (rqst_buf[2] & 0x0F) {
+ case GTP_RQST_CONFIG:
+ GTP_INFO("Request for config.");
+ ret = gtp_send_cfg(ts->client);
+ if (ret < 0) {
+ GTP_ERROR("Request for config unresponded!");
+ } else {
+ rqst_buf[2] = GTP_RQST_RESPONDED;
+ gtp_i2c_write(ts->client, rqst_buf, 3);
+ GTP_INFO("Request for config responded!");
+ }
+ break;
+
+ case GTP_RQST_BAK_REF:
+ GTP_INFO("Request for backup reference.");
+ ret = gtp_bak_ref_proc(ts, GTP_BAK_REF_SEND);
+ if (SUCCESS == ret) {
+ rqst_buf[2] = GTP_RQST_RESPONDED;
+ gtp_i2c_write(ts->client, rqst_buf, 3);
+ GTP_INFO("Request for backup reference responded!");
+ } else {
+ GTP_ERROR("Requeset for backup reference unresponed!");
+ }
+ break;
+
+ case GTP_RQST_RESET:
+ GTP_INFO("Request for reset.");
+ gtp_recovery_reset(ts->client);
+ break;
+
+ case GTP_RQST_MAIN_CLOCK:
+ GTP_INFO("Request for main clock.");
+ ts->rqst_processing = 1;
+ ret = gtp_main_clk_proc(ts);
+ if (FAIL == ret) {
+ GTP_ERROR("Request for main clock unresponded!");
+ } else {
+ GTP_INFO("Request for main clock responded!");
+ rqst_buf[2] = GTP_RQST_RESPONDED;
+ gtp_i2c_write(ts->client, rqst_buf, 3);
+ ts->rqst_processing = 0;
+ ts->clk_chk_fs_times = 0;
+ }
+ break;
+
+ case GTP_RQST_IDLE:
+ default:
+ break;
+ }
+ }
+#endif
+
+ if((finger & 0x80) == 0) {
+ goto exit_work_func;
+ }
+
+ touch_num = finger & 0x0f;
+ if (touch_num > GTP_MAX_TOUCH) {
+ goto exit_work_func;
+ }
+
+ if (touch_num > 1) {
+ u8 buf[8 * GTP_MAX_TOUCH] = {(GTP_READ_COOR_ADDR + 10) >> 8, (GTP_READ_COOR_ADDR + 10) & 0xff};
+
+ ret = gtp_i2c_read(ts->client, buf, 2 + 8 * (touch_num - 1));
+ memcpy(&point_data[12], &buf[2], 8 * (touch_num - 1));
+ }
+
+#if GTP_HAVE_TOUCH_KEY
+ key_value = point_data[3 + 8 * touch_num];
+
+ if(key_value || pre_key) {
+ for (i = 0; i < GTP_MAX_KEY_NUM; i++) {
+#if GTP_DEBUG_ON
+ for (ret = 0; ret < 4; ++ret) {
+ if (key_codes[ret] == touch_key_array[i]) {
+ GTP_DEBUG("Key: %s %s", key_names[ret], (key_value & (0x01 << i)) ? "Down" : "Up");
+ break;
+ }
+ }
+#endif
+ input_report_key(ts->input_dev, touch_key_array[i], key_value & (0x01<<i));
+ }
+ touch_num = 0;
+ pre_touch = 0;
+ }
+#endif
+ pre_key = key_value;
+
+ GTP_DEBUG("pre_touch:%02x, finger:%02x.", pre_touch, finger);
+
+#if GTP_ICS_SLOT_REPORT
+
+#if GTP_WITH_PEN
+ if (pre_pen && (touch_num == 0)) {
+ GTP_DEBUG("Pen touch UP(Slot)!");
+ input_report_key(ts->input_dev, BTN_TOOL_PEN, 0);
+ input_mt_slot(ts->input_dev, 5);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, -1);
+ pre_pen = 0;
+ }
+#endif
+ if (pre_touch || touch_num) {
+ s32 pos = 0;
+ u16 touch_index = 0;
+ u8 report_num = 0;
+ coor_data = &point_data[3];
+
+ if(touch_num) {
+ id = coor_data[pos] & 0x0F;
+
+#if GTP_WITH_PEN
+ id = coor_data[pos];
+ if ((id & 0x80)) {
+ GTP_DEBUG("Pen touch DOWN(Slot)!");
+ input_x = coor_data[pos + 1] | (coor_data[pos + 2] << 8);
+ input_y = coor_data[pos + 3] | (coor_data[pos + 4] << 8);
+ input_w = coor_data[pos + 5] | (coor_data[pos + 6] << 8);
+
+ input_report_key(ts->input_dev, BTN_TOOL_PEN, 1);
+ input_mt_slot(ts->input_dev, 5);
+ input_report_abs(ts->input_dev, ABS_MT_TRACKING_ID, 5);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_X, input_x);
+ input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, input_y);
+ input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
+ GTP_DEBUG("Pen/Stylus: (%d, %d)[%d]", input_x, input_y, input_w);
+ pre_pen = 1;
+ pre_touch = 0;
+ }
+#endif
+
+ touch_index |= (0x01<<id);
+ }
+
+ GTP_DEBUG("id = %d,touch_index = 0x%x, pre_touch = 0x%x\n",id, touch_index,pre_touch);
+ for (i = 0; i < GTP_MAX_TOUCH; i++) {
+#if GTP_WITH_PEN
+ if (pre_pen == 1) {
+ break;
+ }
+#endif
+
+ if ((touch_index & (0x01<<i))) {
+ input_x = coor_data[pos + 1] | (coor_data[pos + 2] << 8);
+ input_y = coor_data[pos + 3] | (coor_data[pos + 4] << 8);
+ input_w = coor_data[pos + 5] | (coor_data[pos + 6] << 8);
+
+ gtp_touch_down(ts, id, input_x, input_y, input_w);
+ pre_touch |= 0x01 << i;
+
+ report_num++;
+ if (report_num < touch_num) {
+ pos += 8;
+ id = coor_data[pos] & 0x0F;
+ touch_index |= (0x01<<id);
+ }
+ } else {
+ gtp_touch_up(ts, i);
+ pre_touch &= ~(0x01 << i);
+ }
+ }
+ }
+#else
+ input_report_key(ts->input_dev, BTN_TOUCH, (touch_num || key_value));
+ if (touch_num) {
+ for (i = 0; i < touch_num; i++) {
+ coor_data = &point_data[i * 8 + 3];
+
+ id = coor_data[0] & 0x0F;
+ input_x = coor_data[1] | (coor_data[2] << 8);
+ input_y = coor_data[3] | (coor_data[4] << 8);
+ input_w = coor_data[5] | (coor_data[6] << 8);
+
+#if GTP_WITH_PEN
+ id = coor_data[0];
+ if (id & 0x80) {
+ GTP_DEBUG("Pen touch DOWN!");
+ input_report_key(ts->input_dev, BTN_TOOL_PEN, 1);
+ pre_pen = 1;
+ id = 0;
+ }
+#endif
+
+ gtp_touch_down(ts, id, input_x, input_y, input_w);
+ }
+ } else if (pre_touch) {
+
+#if GTP_WITH_PEN
+ if (pre_pen == 1) {
+ GTP_DEBUG("Pen touch UP!");
+ input_report_key(ts->input_dev, BTN_TOOL_PEN, 0);
+ pre_pen = 0;
+ }
+#endif
+
+ GTP_DEBUG("Touch Release!");
+ gtp_touch_up(ts, 0);
+ }
+
+ pre_touch = touch_num;
+#endif
+
+ input_sync(ts->input_dev);
+
+exit_work_func:
+ if(!ts->gtp_rawdiff_mode) {
+ ret = gtp_i2c_write(ts->client, end_cmd, 3);
+ if (ret < 0) {
+ GTP_INFO("I2C write end_cmd error!");
+ }
+ }
+ if (ts->use_irq) {
+ gtp_irq_enable(ts);
+ }
+}
+
+/*******************************************************
+Function:
+ Timer interrupt service routine for polling mode.
+Input:
+ timer: timer struct pointer
+Output:
+ Timer work mode.
+ HRTIMER_NORESTART: no restart mode
+*********************************************************/
+static enum hrtimer_restart goodix_ts_timer_handler(struct hrtimer *timer)
+{
+ struct goodix_ts_data *ts = container_of(timer, struct goodix_ts_data, timer);
+
+ GTP_DEBUG_FUNC();
+
+ queue_work(goodix_wq, &ts->work);
+ hrtimer_start(&ts->timer, ktime_set(0, (GTP_POLL_TIME+6)*1000000), HRTIMER_MODE_REL);
+ return HRTIMER_NORESTART;
+}
+
+/*******************************************************
+Function:
+ External interrupt service routine for interrupt mode.
+Input:
+ irq: interrupt number.
+ dev_id: private data pointer
+Output:
+ Handle Result.
+ IRQ_HANDLED: interrupt handled successfully
+*********************************************************/
+static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
+{
+ struct goodix_ts_data *ts = dev_id;
+
+ GTP_DEBUG_FUNC();
+
+ gtp_irq_disable(ts);
+
+ queue_work(goodix_wq, &ts->work);
+
+ return IRQ_HANDLED;
+}
+/*******************************************************
+Function:
+ Synchronization.
+Input:
+ ms: synchronization time in millisecond.
+Output:
+ None.
+*******************************************************/
+void gtp_int_sync(s32 ms)
+{
+ GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
+ msleep(ms);
+ GTP_GPIO_AS_INT(GTP_INT_PORT);
+}
+
+
+/*******************************************************
+Function:
+ Reset chip.
+Input:
+ ms: reset time in millisecond
+Output:
+ None.
+*******************************************************/
+void gtp_reset_guitar(struct i2c_client *client, s32 ms)
+{
+#if GTP_COMPATIBLE_MODE
+ struct goodix_ts_data *ts = i2c_get_clientdata(client);
+#endif
+
+ GTP_DEBUG_FUNC();
+ GTP_INFO("Guitar reset");
+ GTP_GPIO_OUTPUT(GTP_RST_PORT, 0); // begin select I2C slave addr
+ msleep(ms); // T2: > 10ms
+ // HIGH: 0x28/0x29, LOW: 0xBA/0xBB
+ GTP_GPIO_OUTPUT(GTP_INT_PORT, client->addr == 0x14);
+
+ msleep(2); // T3: > 100us
+ GTP_GPIO_OUTPUT(GTP_RST_PORT, 1);
+
+ msleep(6); // T4: > 5ms
+
+ GTP_GPIO_AS_INPUT(GTP_RST_PORT); // end select I2C slave addr
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ return;
+ }
+#endif
+
+ gtp_int_sync(50);
+#if GTP_ESD_PROTECT
+ gtp_init_ext_watchdog(client);
+#endif
+}
+
+#if GTP_SLIDE_WAKEUP
+/*******************************************************
+Function:
+ Enter doze mode for sliding wakeup.
+Input:
+ ts: goodix tp private data
+Output:
+ 1: succeed, otherwise failed
+*******************************************************/
+static s8 gtp_enter_doze(struct goodix_ts_data *ts)
+{
+ s8 ret = -1;
+ s8 retry = 0;
+ u8 i2c_control_buf[3] = {(u8)(GTP_REG_SLEEP >> 8), (u8)GTP_REG_SLEEP, 8};
+
+ GTP_DEBUG_FUNC();
+
+#if GTP_DBL_CLK_WAKEUP
+ i2c_control_buf[2] = 0x09;
+#endif
+
+ gtp_irq_disable(ts);
+
+ GTP_DEBUG("Entering doze mode.");
+ while(retry++ < 5) {
+ i2c_control_buf[0] = 0x80;
+ i2c_control_buf[1] = 0x46;
+ ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
+ if (ret < 0) {
+ GTP_DEBUG("failed to set doze flag into 0x8046, %d", retry);
+ continue;
+ }
+ i2c_control_buf[0] = 0x80;
+ i2c_control_buf[1] = 0x40;
+ ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
+ if (ret > 0) {
+ doze_status = DOZE_ENABLED;
+ GTP_INFO("GTP has been working in doze mode!");
+ gtp_irq_enable(ts);
+ return ret;
+ }
+ msleep(10);
+ }
+ GTP_ERROR("GTP send doze cmd failed.");
+ gtp_irq_enable(ts);
+ return ret;
+}
+#else
+/*******************************************************
+Function:
+ Enter sleep mode.
+Input:
+ ts: private data.
+Output:
+ Executive outcomes.
+ 1: succeed, otherwise failed.
+*******************************************************/
+static s8 gtp_enter_sleep(struct goodix_ts_data * ts)
+{
+ s8 ret = -1;
+ s8 retry = 0;
+ u8 i2c_control_buf[3] = {(u8)(GTP_REG_SLEEP >> 8), (u8)GTP_REG_SLEEP, 5};
+
+#if GTP_COMPATIBLE_MODE
+ u8 status_buf[3] = {0x80, 0x44};
+#endif
+
+ GTP_DEBUG_FUNC();
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ // GT9XXF: host interact with ic
+ ret = gtp_i2c_read(ts->client, status_buf, 3);
+ if (ret < 0) {
+ GTP_ERROR("failed to get backup-reference status");
+ }
+
+ if (status_buf[2] & 0x80) {
+ ret = gtp_bak_ref_proc(ts, GTP_BAK_REF_STORE);
+ if (FAIL == ret) {
+ GTP_ERROR("failed to store bak_ref");
+ }
+ }
+ }
+#endif
+
+ GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
+ msleep(5);
+
+ while(retry++ < 5) {
+ ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
+ if (ret > 0) {
+ GTP_INFO("GTP enter sleep!");
+
+ return ret;
+ }
+ msleep(10);
+ }
+ GTP_ERROR("GTP send sleep cmd failed.");
+ return ret;
+}
+#endif
+/*******************************************************
+Function:
+ Wakeup from sleep.
+Input:
+ ts: private data.
+Output:
+ Executive outcomes.
+ >0: succeed, otherwise: failed.
+*******************************************************/
+static s8 gtp_wakeup_sleep(struct goodix_ts_data * ts)
+{
+ u8 retry = 0;
+ s8 ret = -1;
+
+ GTP_DEBUG_FUNC();
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ u8 opr_buf[3] = {0x41, 0x80};
+
+ GTP_GPIO_OUTPUT(GTP_INT_PORT, 1);
+ msleep(5);
+
+ for (retry = 0; retry < 20; ++retry) {
+ // hold ss51 & dsp
+ opr_buf[2] = 0x0C;
+ ret = gtp_i2c_write(ts->client, opr_buf, 3);
+ if (FAIL == ret) {
+ GTP_ERROR("failed to hold ss51 & dsp!");
+ continue;
+ }
+ opr_buf[2] = 0x00;
+ ret = gtp_i2c_read(ts->client, opr_buf, 3);
+ if (FAIL == ret) {
+ GTP_ERROR("failed to get ss51 & dsp status!");
+ continue;
+ }
+ if (0x0C != opr_buf[2]) {
+ GTP_DEBUG("ss51 & dsp not been hold, %d", retry+1);
+ continue;
+ }
+ GTP_DEBUG("ss51 & dsp confirmed hold");
+
+ ret = gtp_fw_startup(ts->client);
+ if (FAIL == ret) {
+ GTP_ERROR("failed to startup GT9XXF, process recovery");
+ gtp_esd_recovery(ts->client);
+ }
+ break;
+ }
+ if (retry >= 10) {
+ GTP_ERROR("failed to wakeup, processing esd recovery");
+ gtp_esd_recovery(ts->client);
+ } else {
+ GTP_INFO("GT9XXF gtp wakeup success");
+ }
+ return ret;
+ }
+#endif
+
+#if GTP_POWER_CTRL_SLEEP
+ while(retry++ < 5) {
+ gtp_reset_guitar(ts->client, 20);
+
+ GTP_INFO("GTP wakeup sleep.");
+ return 1;
+ }
+#else
+ while(retry++ < 10) {
+#if GTP_SLIDE_WAKEUP
+ if (DOZE_WAKEUP != doze_status) { // wakeup not by slide
+ GTP_DEBUG("wakeup by power, reset guitar");
+ doze_status = DOZE_DISABLED;
+ gtp_irq_disable(ts);
+ gtp_reset_guitar(ts->client, 10);
+ gtp_irq_enable(ts);
+ } else { // wakeup by slide
+ GTP_DEBUG("wakeup by slide/double-click, no reset guitar");
+ doze_status = DOZE_DISABLED;
+#if GTP_ESD_PROTECT
+ gtp_init_ext_watchdog(ts->client);
+#endif
+ }
+
+#else
+ if (chip_gt9xxs == 1) {
+ gtp_reset_guitar(ts->client, 10);
+ } else {
+ GTP_GPIO_OUTPUT(GTP_INT_PORT, 1);
+ msleep(5);
+ }
+#endif
+
+ ret = gtp_i2c_test(ts->client);
+ if (ret > 0) {
+ GTP_INFO("GTP wakeup sleep.");
+
+#if (!GTP_SLIDE_WAKEUP)
+ if (chip_gt9xxs == 0) {
+ gtp_int_sync(25);
+#if GTP_ESD_PROTECT
+ gtp_init_ext_watchdog(ts->client);
+#endif
+ }
+#endif
+
+ return ret;
+ }
+ gtp_reset_guitar(ts->client, 20);
+ }
+#endif
+
+ GTP_ERROR("GTP wakeup sleep failed.");
+ return ret;
+}
+#if GTP_DRIVER_SEND_CFG
+static s32 gtp_get_info(struct goodix_ts_data *ts)
+{
+ u8 opr_buf[6] = {0};
+ s32 ret = 0;
+
+ opr_buf[0] = (u8)((GTP_REG_CONFIG_DATA+1) >> 8);
+ opr_buf[1] = (u8)((GTP_REG_CONFIG_DATA+1) & 0xFF);
+
+ ret = gtp_i2c_read(ts->client, opr_buf, 6);
+ if (ret < 0) {
+ return FAIL;
+ }
+
+ ts->abs_x_max = (opr_buf[3] << 8) + opr_buf[2];
+ ts->abs_y_max = (opr_buf[5] << 8) + opr_buf[4];
+
+ opr_buf[0] = (u8)((GTP_REG_CONFIG_DATA+6) >> 8);
+ opr_buf[1] = (u8)((GTP_REG_CONFIG_DATA+6) & 0xFF);
+
+ ret = gtp_i2c_read(ts->client, opr_buf, 3);
+ if (ret < 0) {
+ return FAIL;
+ }
+ ts->int_trigger_type = opr_buf[2] & 0x03;
+
+ GTP_INFO("X_MAX = %d, Y_MAX = %d, TRIGGER = 0x%02x",
+ ts->abs_x_max,ts->abs_y_max,ts->int_trigger_type);
+
+ return SUCCESS;
+}
+#endif
+
+/*******************************************************
+Function:
+ Initialize gtp.
+Input:
+ ts: goodix private data
+Output:
+ Executive outcomes.
+ 0: succeed, otherwise: failed
+*******************************************************/
+static s32 gtp_init_panel(struct goodix_ts_data *ts)
+{
+ s32 ret = -1;
+
+#if GTP_DRIVER_SEND_CFG
+ s32 i = 0;
+ u8 check_sum = 0;
+ u8 opr_buf[16] = {0};
+ u8 sensor_id = 0;
+
+ u8 cfg_info_group1[] = CTP_CFG_GROUP1;
+ u8 cfg_info_group2[] = CTP_CFG_GROUP2;
+ u8 cfg_info_group3[] = CTP_CFG_GROUP3;
+ u8 cfg_info_group4[] = CTP_CFG_GROUP4;
+ u8 cfg_info_group5[] = CTP_CFG_GROUP5;
+ u8 cfg_info_group6[] = CTP_CFG_GROUP6;
+ u8 *send_cfg_buf[] = {cfg_info_group1, cfg_info_group2, cfg_info_group3,
+ cfg_info_group4, cfg_info_group5, cfg_info_group6
+ };
+ u8 cfg_info_len[] = { CFG_GROUP_LEN(cfg_info_group1),
+ CFG_GROUP_LEN(cfg_info_group2),
+ CFG_GROUP_LEN(cfg_info_group3),
+ CFG_GROUP_LEN(cfg_info_group4),
+ CFG_GROUP_LEN(cfg_info_group5),
+ CFG_GROUP_LEN(cfg_info_group6)
+ };
+
+ GTP_DEBUG_FUNC();
+ GTP_DEBUG("Config Groups\' Lengths: %d, %d, %d, %d, %d, %d",
+ cfg_info_len[0], cfg_info_len[1], cfg_info_len[2], cfg_info_len[3],
+ cfg_info_len[4], cfg_info_len[5]);
+
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ ts->fw_error = 0;
+ } else
+#endif
+ {
+ ret = gtp_i2c_read_dbl_check(ts->client, 0x41E4, opr_buf, 1);
+ if (SUCCESS == ret) {
+ if (opr_buf[0] != 0xBE) {
+ ts->fw_error = 1;
+ GTP_ERROR("Firmware error, no config sent!");
+ return -1;
+ }
+ }
+ }
+
+ if ((!cfg_info_len[1]) && (!cfg_info_len[2]) &&
+ (!cfg_info_len[3]) && (!cfg_info_len[4]) &&
+ (!cfg_info_len[5])) {
+ sensor_id = 0;
+ } else {
+#if GTP_COMPATIBLE_MODE
+ msleep(50);
+#endif
+ ret = gtp_i2c_read_dbl_check(ts->client, GTP_REG_SENSOR_ID, &sensor_id, 1);
+ if (SUCCESS == ret) {
+ if (sensor_id >= 0x06) {
+ GTP_ERROR("Invalid sensor_id(0x%02X), No Config Sent!", sensor_id);
+ ts->pnl_init_error = 1;
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ return -1;
+ } else
+#endif
+ {
+ gtp_get_info(ts);
+ }
+ return 0;
+ }
+ } else {
+ GTP_ERROR("Failed to get sensor_id, No config sent!");
+ ts->pnl_init_error = 1;
+ return -1;
+ }
+ GTP_INFO("Sensor_ID: %d", sensor_id);
+ }
+ ts->gtp_cfg_len = cfg_info_len[sensor_id];
+ GTP_INFO("CTP_CONFIG_GROUP%d used, config length: %d", sensor_id + 1, ts->gtp_cfg_len);
+
+ if (ts->gtp_cfg_len < GTP_CONFIG_MIN_LENGTH) {
+ GTP_ERROR("Config Group%d is INVALID CONFIG GROUP(Len: %d)! NO Config Sent! You need to check you header file CFG_GROUP section!", sensor_id+1, ts->gtp_cfg_len);
+ ts->pnl_init_error = 1;
+ return -1;
+ }
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ ts->fixed_cfg = 0;
+ } else
+#endif
+ {
+ ret = gtp_i2c_read_dbl_check(ts->client, GTP_REG_CONFIG_DATA, &opr_buf[0], 1);
+
+ if (ret == SUCCESS) {
+ GTP_DEBUG("CFG_GROUP%d Config Version: %d, 0x%02X; IC Config Version: %d, 0x%02X", sensor_id+1,
+ send_cfg_buf[sensor_id][0], send_cfg_buf[sensor_id][0], opr_buf[0], opr_buf[0]);
+
+ if (opr_buf[0] < 90) {
+ grp_cfg_version = send_cfg_buf[sensor_id][0]; // backup group config version
+ send_cfg_buf[sensor_id][0] = 0x00;
+ ts->fixed_cfg = 0;
+ } else { // treated as fixed config, not send config
+ GTP_INFO("Ic fixed config with config version(%d, 0x%02X)", opr_buf[0], opr_buf[0]);
+ ts->fixed_cfg = 1;
+ gtp_get_info(ts);
+ return 0;
+ }
+ } else {
+ GTP_ERROR("Failed to get ic config version!No config sent!");
+ return -1;
+ }
+ }
+
+ memset(&config[GTP_ADDR_LENGTH], 0, GTP_CONFIG_MAX_LENGTH);
+ memcpy(&config[GTP_ADDR_LENGTH], send_cfg_buf[sensor_id], ts->gtp_cfg_len);
+
+#if GTP_CUSTOM_CFG
+ config[RESOLUTION_LOC] = (u8)GTP_MAX_WIDTH;
+ config[RESOLUTION_LOC + 1] = (u8)(GTP_MAX_WIDTH>>8);
+ config[RESOLUTION_LOC + 2] = (u8)GTP_MAX_HEIGHT;
+ config[RESOLUTION_LOC + 3] = (u8)(GTP_MAX_HEIGHT>>8);
+
+ if (GTP_INT_TRIGGER == 0) { //RISING
+ config[TRIGGER_LOC] &= 0xfe;
+ } else if (GTP_INT_TRIGGER == 1) { //FALLING
+ config[TRIGGER_LOC] |= 0x01;
+ }
+#endif // GTP_CUSTOM_CFG
+
+ check_sum = 0;
+ for (i = GTP_ADDR_LENGTH; i < ts->gtp_cfg_len; i++) {
+ check_sum += config[i];
+ }
+ config[ts->gtp_cfg_len] = (~check_sum) + 1;
+
+#else // driver not send config
+
+ ts->gtp_cfg_len = GTP_CONFIG_MAX_LENGTH;
+ ret = gtp_i2c_read(ts->client, config, ts->gtp_cfg_len + GTP_ADDR_LENGTH);
+ if (ret < 0) {
+ GTP_ERROR("Read Config Failed, Using Default Resolution & INT Trigger!");
+ ts->abs_x_max = GTP_MAX_WIDTH;
+ ts->abs_y_max = GTP_MAX_HEIGHT;
+ ts->int_trigger_type = GTP_INT_TRIGGER;
+ }
+
+#endif // GTP_DRIVER_SEND_CFG
+
+ if ((ts->abs_x_max == 0) && (ts->abs_y_max == 0)) {
+ ts->abs_x_max = (config[RESOLUTION_LOC + 1] << 8) + config[RESOLUTION_LOC];
+ ts->abs_y_max = (config[RESOLUTION_LOC + 3] << 8) + config[RESOLUTION_LOC + 2];
+ ts->int_trigger_type = (config[TRIGGER_LOC]) & 0x03;
+ }
+
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ u8 sensor_num = 0;
+ u8 driver_num = 0;
+ u8 have_key = 0;
+
+ have_key = (config[GTP_REG_HAVE_KEY - GTP_REG_CONFIG_DATA + 2] & 0x01);
+
+ if (1 == ts->is_950) {
+ driver_num = config[GTP_REG_MATRIX_DRVNUM - GTP_REG_CONFIG_DATA + 2];
+ sensor_num = config[GTP_REG_MATRIX_SENNUM - GTP_REG_CONFIG_DATA + 2];
+ if (have_key) {
+ driver_num--;
+ }
+ ts->bak_ref_len = (driver_num * (sensor_num - 1) + 2) * 2 * 6;
+ } else {
+ driver_num = (config[CFG_LOC_DRVA_NUM] & 0x1F) + (config[CFG_LOC_DRVB_NUM]&0x1F);
+ if (have_key) {
+ driver_num--;
+ }
+ sensor_num = (config[CFG_LOC_SENS_NUM] & 0x0F) + ((config[CFG_LOC_SENS_NUM] >> 4) & 0x0F);
+ ts->bak_ref_len = (driver_num * (sensor_num - 2) + 2) * 2;
+ }
+
+ GTP_INFO("Drv * Sen: %d * %d(key: %d), X_MAX: %d, Y_MAX: %d, TRIGGER: 0x%02x",
+ driver_num, sensor_num, have_key, ts->abs_x_max,ts->abs_y_max,ts->int_trigger_type);
+ return 0;
+ } else
+#endif
+ {
+#if GTP_DRIVER_SEND_CFG
+ ret = gtp_send_cfg(ts->client);
+ if (ret < 0) {
+ GTP_ERROR("Send config error.");
+ }
+ // set config version to CTP_CFG_GROUP, for resume to send config
+ config[GTP_ADDR_LENGTH] = grp_cfg_version;
+ check_sum = 0;
+ for (i = GTP_ADDR_LENGTH; i < ts->gtp_cfg_len; i++) {
+ check_sum += config[i];
+ }
+ config[ts->gtp_cfg_len] = (~check_sum) + 1;
+#endif
+ GTP_INFO("X_MAX: %d, Y_MAX: %d, TRIGGER: 0x%02x", ts->abs_x_max,ts->abs_y_max,ts->int_trigger_type);
+ }
+
+ msleep(10);
+ return 0;
+}
+
+/*******************************************************
+Function:
+ Read chip version.
+Input:
+ client: i2c device
+ version: buffer to keep ic firmware version
+Output:
+ read operation return.
+ 2: succeed, otherwise: failed
+*******************************************************/
+s32 gtp_read_version(struct i2c_client *client, u16* version)
+{
+ s32 ret = -1;
+ u8 buf[8] = {GTP_REG_VERSION >> 8, GTP_REG_VERSION & 0xff};
+
+ GTP_DEBUG_FUNC();
+
+ ret = gtp_i2c_read(client, buf, sizeof(buf));
+ if (ret < 0) {
+ GTP_ERROR("GTP read version failed");
+ return ret;
+ }
+
+ if (version) {
+ *version = (buf[7] << 8) | buf[6];
+ }
+
+ if (buf[5] == 0x00) {
+ GTP_INFO("IC Version: %c%c%c_%02x%02x", buf[2], buf[3], buf[4], buf[7], buf[6]);
+ } else {
+ if (buf[5] == 'S' || buf[5] == 's') {
+ chip_gt9xxs = 1;
+ }
+ GTP_INFO("IC Version: %c%c%c%c_%02x%02x", buf[2], buf[3], buf[4], buf[5], buf[7], buf[6]);
+ }
+ return ret;
+}
+
+/*******************************************************
+Function:
+ I2c test Function.
+Input:
+ client:i2c client.
+Output:
+ Executive outcomes.
+ 2: succeed, otherwise failed.
+*******************************************************/
+static s8 gtp_i2c_test(struct i2c_client *client)
+{
+ u8 test[3] = {GTP_REG_CONFIG_DATA >> 8, GTP_REG_CONFIG_DATA & 0xff};
+ u8 retry = 0;
+ s8 ret = -1;
+
+ GTP_DEBUG_FUNC();
+
+ while(retry++ < 5) {
+ ret = gtp_i2c_read(client, test, 3);
+ if (ret > 0) {
+ return ret;
+ }
+ GTP_ERROR("GTP i2c test failed time %d.",retry);
+ msleep(10);
+ }
+ return ret;
+}
+
+/*******************************************************
+Function:
+ Request gpio(INT & RST) ports.
+Input:
+ ts: private data.
+Output:
+ Executive outcomes.
+ >= 0: succeed, < 0: failed
+*******************************************************/
+static s8 gtp_request_io_port(struct goodix_ts_data *ts)
+{
+ s32 ret = 0;
+
+ GTP_DEBUG_FUNC();
+ ret = GTP_GPIO_REQUEST(GTP_INT_PORT, "GTP_INT_IRQ");
+ if (ret < 0) {
+ GTP_ERROR("Failed to request GPIO:%d, ERRNO:%d", (s32)GTP_INT_PORT, ret);
+ ret = -ENODEV;
+ } else {
+ GTP_GPIO_AS_INT(GTP_INT_PORT);
+ ts->client->irq = GTP_INT_IRQ;
+ }
+
+ ret = GTP_GPIO_REQUEST(GTP_RST_PORT, "GTP_RST_PORT");
+ if (ret < 0) {
+ GTP_ERROR("Failed to request GPIO:%d, ERRNO:%d",(s32)GTP_RST_PORT,ret);
+ ret = -ENODEV;
+ }
+
+ GTP_GPIO_AS_INPUT(GTP_RST_PORT);
+
+ gtp_reset_guitar(ts->client, 20);
+
+ if(ret < 0) {
+ GTP_GPIO_FREE(GTP_RST_PORT);
+ GTP_GPIO_FREE(GTP_INT_PORT);
+ }
+
+ return ret;
+}
+
+/*******************************************************
+Function:
+ Request interrupt.
+Input:
+ ts: private data.
+Output:
+ Executive outcomes.
+ 0: succeed, -1: failed.
+*******************************************************/
+static s8 gtp_request_irq(struct goodix_ts_data *ts)
+{
+ s32 ret = -1;
+ const u8 irq_table[] = GTP_IRQ_TAB;
+
+ GTP_DEBUG_FUNC();
+ GTP_DEBUG("INT trigger type:%x", ts->int_trigger_type);
+
+ ret = request_irq(ts->client->irq,
+ goodix_ts_irq_handler,
+ irq_table[ts->int_trigger_type],
+ ts->client->name,
+ ts);
+ if (ret) {
+ GTP_ERROR("Request IRQ failed!ERRNO:%d.", ret);
+ GTP_GPIO_AS_INPUT(GTP_INT_PORT);
+ GTP_GPIO_FREE(GTP_INT_PORT);
+
+ hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ts->timer.function = goodix_ts_timer_handler;
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+ return -1;
+ } else {
+ gtp_irq_disable(ts);
+ ts->use_irq = 1;
+ return 0;
+ }
+}
+
+/*******************************************************
+Function:
+ Request input device Function.
+Input:
+ ts:private data.
+Output:
+ Executive outcomes.
+ 0: succeed, otherwise: failed.
+*******************************************************/
+static s8 gtp_request_input_dev(struct goodix_ts_data *ts)
+{
+ s8 ret = -1;
+ s8 phys[32];
+#if GTP_HAVE_TOUCH_KEY
+ u8 index = 0;
+#endif
+
+ GTP_DEBUG_FUNC();
+
+ ts->input_dev = input_allocate_device();
+ if (ts->input_dev == NULL) {
+ GTP_ERROR("Failed to allocate input device.");
+ return -ENOMEM;
+ }
+
+ ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) ;
+#if GTP_ICS_SLOT_REPORT
+ __set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
+ input_mt_init_slots(ts->input_dev, 16); // in case of "out of memory"
+#else
+ ts->input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+#endif
+
+#if GTP_HAVE_TOUCH_KEY
+ for (index = 0; index < GTP_MAX_KEY_NUM; index++) {
+ input_set_capability(ts->input_dev, EV_KEY, touch_key_array[index]);
+ }
+#endif
+
+#if GTP_SLIDE_WAKEUP
+ input_set_capability(ts->input_dev, EV_KEY, KEY_POWER);
+#endif
+
+#if GTP_WITH_PEN
+ // pen support
+ __set_bit(BTN_TOOL_PEN, ts->input_dev->keybit);
+ __set_bit(INPUT_PROP_DIRECT, ts->input_dev->propbit);
+ //__set_bit(INPUT_PROP_POINTER, ts->input_dev->propbit);
+#endif
+
+#if GTP_CHANGE_X2Y
+ GTP_SWAP(ts->abs_x_max, ts->abs_y_max);
+#endif
+
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X, 0, ts->abs_x_max, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y, 0, ts->abs_y_max, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
+ input_set_abs_params(ts->input_dev, ABS_MT_TRACKING_ID, 0, 255, 0, 0);
+
+ sprintf(phys, "input/ts");
+ ts->input_dev->name = goodix_ts_name;
+ ts->input_dev->phys = phys;
+ ts->input_dev->id.bustype = BUS_I2C;
+ ts->input_dev->id.vendor = 0xDEAD;
+ ts->input_dev->id.product = 0xBEEF;
+ ts->input_dev->id.version = 10427;
+
+ ret = input_register_device(ts->input_dev);
+ if (ret) {
+ GTP_ERROR("Register %s input device failed", ts->input_dev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+//************** For GT9XXF Start *************//
+#if GTP_COMPATIBLE_MODE
+
+s32 gtp_fw_startup(struct i2c_client *client)
+{
+ u8 opr_buf[4];
+ s32 ret = 0;
+
+ //init sw WDT
+ opr_buf[0] = 0xAA;
+ ret = i2c_write_bytes(client, 0x8041, opr_buf, 1);
+ if (ret < 0) {
+ return FAIL;
+ }
+
+ //release SS51 & DSP
+ opr_buf[0] = 0x00;
+ ret = i2c_write_bytes(client, 0x4180, opr_buf, 1);
+ if (ret < 0) {
+ return FAIL;
+ }
+ //int sync
+ gtp_int_sync(25);
+
+ //check fw run status
+ ret = i2c_read_bytes(client, 0x8041, opr_buf, 1);
+ if (ret < 0) {
+ return FAIL;
+ }
+ if(0xAA == opr_buf[0]) {
+ GTP_ERROR("IC works abnormally,startup failed.");
+ return FAIL;
+ } else {
+ GTP_INFO("IC works normally, Startup success.");
+ opr_buf[0] = 0xAA;
+ i2c_write_bytes(client, 0x8041, opr_buf, 1);
+ return SUCCESS;
+ }
+}
+
+static s32 gtp_esd_recovery(struct i2c_client *client)
+{
+ s32 retry = 0;
+ s32 ret = 0;
+ struct goodix_ts_data *ts;
+
+ ts = i2c_get_clientdata(client);
+
+ gtp_irq_disable(ts);
+
+ GTP_INFO("GT9XXF esd recovery mode");
+ gtp_reset_guitar(client, 20); // reset & select I2C addr
+ for (retry = 0; retry < 5; ++retry) {
+ ret = gup_fw_download_proc(NULL, GTP_FL_ESD_RECOVERY);
+ if (FAIL == ret) {
+ GTP_ERROR("esd recovery failed %d", retry+1);
+ continue;
+ }
+ ret = gtp_fw_startup(ts->client);
+ if (FAIL == ret) {
+ GTP_ERROR("GT9XXF start up failed %d", retry+1);
+ continue;
+ }
+ break;
+ }
+ gtp_irq_enable(ts);
+
+ if (retry >= 5) {
+ GTP_ERROR("failed to esd recovery");
+ return FAIL;
+ }
+
+ GTP_INFO("Esd recovery successful");
+ return SUCCESS;
+}
+
+void gtp_recovery_reset(struct i2c_client *client)
+{
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(client, SWITCH_OFF);
+#endif
+ GTP_DEBUG_FUNC();
+
+ gtp_esd_recovery(client);
+
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(client, SWITCH_ON);
+#endif
+}
+
+static s32 gtp_bak_ref_proc(struct goodix_ts_data *ts, u8 mode)
+{
+ s32 ret = 0;
+ s32 i = 0;
+ s32 j = 0;
+ u16 ref_sum = 0;
+ u16 learn_cnt = 0;
+ u16 chksum = 0;
+ s32 ref_seg_len = 0;
+ s32 ref_grps = 0;
+ struct file *ref_filp = NULL;
+ u8 *p_bak_ref;
+
+ ret = gup_check_fs_mounted("/data");
+ if (FAIL == ret) {
+ ts->ref_chk_fs_times++;
+ GTP_DEBUG("Ref check /data times/MAX_TIMES: %d / %d", ts->ref_chk_fs_times, GTP_CHK_FS_MNT_MAX);
+ if (ts->ref_chk_fs_times < GTP_CHK_FS_MNT_MAX) {
+ msleep(50);
+ GTP_INFO("/data not mounted.");
+ return FAIL;
+ }
+ GTP_INFO("check /data mount timeout...");
+ } else {
+ GTP_INFO("/data mounted!!!(%d/%d)", ts->ref_chk_fs_times, GTP_CHK_FS_MNT_MAX);
+ }
+
+ p_bak_ref = (u8 *)kzalloc(ts->bak_ref_len, GFP_KERNEL);
+
+ if (NULL == p_bak_ref) {
+ GTP_ERROR("Allocate memory for p_bak_ref failed!");
+ return FAIL;
+ }
+
+ if (ts->is_950) {
+ ref_seg_len = ts->bak_ref_len / 6;
+ ref_grps = 6;
+ } else {
+ ref_seg_len = ts->bak_ref_len;
+ ref_grps = 1;
+ }
+ ref_filp = filp_open(GTP_BAK_REF_PATH, O_RDWR | O_CREAT, 0666);
+ if (IS_ERR(ref_filp)) {
+ GTP_INFO("%s is unavailable, default backup-reference used", GTP_BAK_REF_PATH);
+ goto bak_ref_default;
+ }
+
+ switch (mode) {
+ case GTP_BAK_REF_SEND:
+ GTP_INFO("Send backup-reference");
+ ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);
+ ret = ref_filp->f_op->read(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);
+ if (ret < 0) {
+ GTP_ERROR("failed to read bak_ref info from file, sending defualt bak_ref");
+ goto bak_ref_default;
+ }
+ for (j = 0; j < ref_grps; ++j) {
+ ref_sum = 0;
+ for (i = 0; i < (ref_seg_len); i += 2) {
+ ref_sum += (p_bak_ref[i + j * ref_seg_len] << 8) + p_bak_ref[i+1 + j * ref_seg_len];
+ }
+ learn_cnt = (p_bak_ref[j * ref_seg_len + ref_seg_len -4] << 8) + (p_bak_ref[j * ref_seg_len + ref_seg_len -3]);
+ chksum = (p_bak_ref[j * ref_seg_len + ref_seg_len -2] << 8) + (p_bak_ref[j * ref_seg_len + ref_seg_len -1]);
+ GTP_DEBUG("learn count = %d", learn_cnt);
+ GTP_DEBUG("chksum = %d", chksum);
+ GTP_DEBUG("ref_sum = 0x%04X", ref_sum & 0xFFFF);
+ // Sum(1~ref_seg_len) == 1
+ if (1 != ref_sum) {
+ GTP_INFO("wrong chksum for bak_ref, reset to 0x00 bak_ref");
+ memset(&p_bak_ref[j * ref_seg_len], 0, ref_seg_len);
+ p_bak_ref[ref_seg_len + j * ref_seg_len - 1] = 0x01;
+ } else {
+ if (j == (ref_grps - 1)) {
+ GTP_INFO("backup-reference data in %s used", GTP_BAK_REF_PATH);
+ }
+ }
+ }
+ ret = i2c_write_bytes(ts->client, GTP_REG_BAK_REF, p_bak_ref, ts->bak_ref_len);
+ if (FAIL == ret) {
+ GTP_ERROR("failed to send bak_ref because of iic comm error");
+ filp_close(ref_filp, NULL);
+ return FAIL;
+ }
+ break;
+
+ case GTP_BAK_REF_STORE:
+ GTP_INFO("Store backup-reference");
+ ret = i2c_read_bytes(ts->client, GTP_REG_BAK_REF, p_bak_ref, ts->bak_ref_len);
+ if (ret < 0) {
+ GTP_ERROR("failed to read bak_ref info, sending default back-reference");
+ goto bak_ref_default;
+ }
+ ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);
+ ref_filp->f_op->write(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);
+ break;
+
+ default:
+ GTP_ERROR("invalid backup-reference request");
+ break;
+ }
+ filp_close(ref_filp, NULL);
+ return SUCCESS;
+
+bak_ref_default:
+
+ for (j = 0; j < ref_grps; ++j) {
+ memset(&p_bak_ref[j * ref_seg_len], 0, ref_seg_len);
+ p_bak_ref[j * ref_seg_len + ref_seg_len - 1] = 0x01; // checksum = 1
+ }
+ ret = i2c_write_bytes(ts->client, GTP_REG_BAK_REF, p_bak_ref, ts->bak_ref_len);
+ if (!IS_ERR(ref_filp)) {
+ GTP_INFO("write backup-reference data into %s", GTP_BAK_REF_PATH);
+ ref_filp->f_op->llseek(ref_filp, 0, SEEK_SET);
+ ref_filp->f_op->write(ref_filp, (char*)p_bak_ref, ts->bak_ref_len, &ref_filp->f_pos);
+ filp_close(ref_filp, NULL);
+ }
+ if (ret == FAIL) {
+ GTP_ERROR("failed to load the default backup reference");
+ return FAIL;
+ }
+ return SUCCESS;
+}
+
+
+static s32 gtp_verify_main_clk(u8 *p_main_clk)
+{
+ u8 chksum = 0;
+ u8 main_clock = p_main_clk[0];
+ s32 i = 0;
+
+ if (main_clock < 50 || main_clock > 120) {
+ return FAIL;
+ }
+
+ for (i = 0; i < 5; ++i) {
+ if (main_clock != p_main_clk[i]) {
+ return FAIL;
+ }
+ chksum += p_main_clk[i];
+ }
+ chksum += p_main_clk[5];
+ if ( (chksum) == 0) {
+ return SUCCESS;
+ } else {
+ return FAIL;
+ }
+}
+
+static s32 gtp_main_clk_proc(struct goodix_ts_data *ts)
+{
+ s32 ret = 0;
+ s32 i = 0;
+ s32 clk_chksum = 0;
+ struct file *clk_filp = NULL;
+ u8 p_main_clk[6] = {0};
+
+ ret = gup_check_fs_mounted("/data");
+ if (FAIL == ret) {
+ ts->clk_chk_fs_times++;
+ GTP_DEBUG("Clock check /data times/MAX_TIMES: %d / %d", ts->clk_chk_fs_times, GTP_CHK_FS_MNT_MAX);
+ if (ts->clk_chk_fs_times < GTP_CHK_FS_MNT_MAX) {
+ msleep(50);
+ GTP_INFO("/data not mounted.");
+ return FAIL;
+ }
+ GTP_INFO("Check /data mount timeout!");
+ } else {
+ GTP_INFO("/data mounted!!!(%d/%d)", ts->clk_chk_fs_times, GTP_CHK_FS_MNT_MAX);
+ }
+
+ clk_filp = filp_open(GTP_MAIN_CLK_PATH, O_RDWR | O_CREAT, 0666);
+ if (IS_ERR(clk_filp)) {
+ GTP_ERROR("%s is unavailable, calculate main clock", GTP_MAIN_CLK_PATH);
+ } else {
+ clk_filp->f_op->llseek(clk_filp, 0, SEEK_SET);
+ clk_filp->f_op->read(clk_filp, (char *)p_main_clk, 6, &clk_filp->f_pos);
+
+ ret = gtp_verify_main_clk(p_main_clk);
+ if (FAIL == ret) {
+ // recalculate main clock & rewrite main clock data to file
+ GTP_ERROR("main clock data in %s is wrong, recalculate main clock", GTP_MAIN_CLK_PATH);
+ } else {
+ GTP_INFO("main clock data in %s used, main clock freq: %d", GTP_MAIN_CLK_PATH, p_main_clk[0]);
+ filp_close(clk_filp, NULL);
+ goto update_main_clk;
+ }
+ }
+
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(ts->client, SWITCH_OFF);
+#endif
+ ret = gup_clk_calibration();
+ gtp_esd_recovery(ts->client);
+
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(ts->client, SWITCH_ON);
+#endif
+
+ GTP_INFO("calibrate main clock: %d", ret);
+ if (ret < 50 || ret > 120) {
+ GTP_ERROR("wrong main clock: %d", ret);
+ goto exit_main_clk;
+ }
+
+ // Sum{0x8020~0x8025} = 0
+ for (i = 0; i < 5; ++i) {
+ p_main_clk[i] = ret;
+ clk_chksum += p_main_clk[i];
+ }
+ p_main_clk[5] = 0 - clk_chksum;
+
+ if (!IS_ERR(clk_filp)) {
+ GTP_DEBUG("write main clock data into %s", GTP_MAIN_CLK_PATH);
+ clk_filp->f_op->llseek(clk_filp, 0, SEEK_SET);
+ clk_filp->f_op->write(clk_filp, (char *)p_main_clk, 6, &clk_filp->f_pos);
+ filp_close(clk_filp, NULL);
+ }
+
+update_main_clk:
+ ret = i2c_write_bytes(ts->client, GTP_REG_MAIN_CLK, p_main_clk, 6);
+ if (FAIL == ret) {
+ GTP_ERROR("update main clock failed!");
+ return FAIL;
+ }
+ return SUCCESS;
+
+exit_main_clk:
+ if (!IS_ERR(clk_filp)) {
+ filp_close(clk_filp, NULL);
+ }
+ return FAIL;
+}
+
+s32 gtp_gt9xxf_init(struct i2c_client *client)
+{
+ s32 ret = 0;
+
+ ret = gup_fw_download_proc(NULL, GTP_FL_FW_BURN);
+ if (FAIL == ret) {
+ return FAIL;
+ }
+
+ ret = gtp_fw_startup(client);
+ if (FAIL == ret) {
+ return FAIL;
+ }
+ return SUCCESS;
+}
+
+void gtp_get_chip_type(struct goodix_ts_data *ts)
+{
+ u8 opr_buf[10] = {0x00};
+ s32 ret = 0;
+
+ msleep(10);
+
+ ret = gtp_i2c_read_dbl_check(ts->client, GTP_REG_CHIP_TYPE, opr_buf, 10);
+
+ if (FAIL == ret) {
+ GTP_ERROR("Failed to get chip-type, set chip type default: GOODIX_GT9");
+ ts->chip_type = CHIP_TYPE_GT9;
+ return;
+ }
+
+ if (!memcmp(opr_buf, "GOODIX_GT9", 10)) {
+ ts->chip_type = CHIP_TYPE_GT9;
+ } else { // GT9XXF
+ ts->chip_type = CHIP_TYPE_GT9F;
+ }
+ GTP_INFO("Chip Type: %s", (ts->chip_type == CHIP_TYPE_GT9) ? "GOODIX_GT9" : "GOODIX_GT9F");
+}
+
+#endif
+//************* For GT9XXF End ************//
+
+/*******************************************************
+Function:
+ I2c probe.
+Input:
+ client: i2c device struct.
+ id: device id.
+Output:
+ Executive outcomes.
+ 0: succeed.
+*******************************************************/
+static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+ s32 ret = -1;
+ struct goodix_ts_data *ts;
+ u16 version_info;
+
+ GTP_DEBUG_FUNC();
+
+ //do NOT remove these logs
+ GTP_INFO("GTP Driver Version: %s", GTP_DRIVER_VERSION);
+ GTP_INFO("GTP Driver Built@%s, %s", __TIME__, __DATE__);
+ GTP_INFO("GTP I2C Address: 0x%02x", client->addr);
+
+ i2c_connect_client = client;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ GTP_ERROR("I2C check functionality failed.");
+ return -ENODEV;
+ }
+ ts = kzalloc(sizeof(*ts), GFP_KERNEL);
+ if (ts == NULL) {
+ GTP_ERROR("Alloc GFP_KERNEL memory failed.");
+ return -ENOMEM;
+ }
+
+ memset(ts, 0, sizeof(*ts));
+ INIT_WORK(&ts->work, goodix_ts_work_func);
+ ts->client = client;
+ spin_lock_init(&ts->irq_lock); // 2.6.39 later
+ // ts->irq_lock = SPIN_LOCK_UNLOCKED; // 2.6.39 & before
+#if GTP_ESD_PROTECT
+ ts->clk_tick_cnt = 2 * HZ; // HZ: clock ticks in 1 second generated by system
+ GTP_DEBUG("Clock ticks for an esd cycle: %d", ts->clk_tick_cnt);
+ spin_lock_init(&ts->esd_lock);
+ // ts->esd_lock = SPIN_LOCK_UNLOCKED;
+#endif
+ i2c_set_clientdata(client, ts);
+
+ ts->gtp_rawdiff_mode = 0;
+
+ ret = gtp_request_io_port(ts);
+ if (ret < 0) {
+ GTP_ERROR("GTP request IO port failed.");
+ kfree(ts);
+ return ret;
+ }
+
+#if GTP_COMPATIBLE_MODE
+ gtp_get_chip_type(ts);
+
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ ret = gtp_gt9xxf_init(ts->client);
+ if (FAIL == ret) {
+ GTP_INFO("Failed to init GT9XXF.");
+ }
+ }
+#endif
+
+ ret = gtp_i2c_test(client);
+ if (ret < 0) {
+ GTP_ERROR("I2C communication ERROR!");
+ }
+
+ ret = gtp_read_version(client, &version_info);
+ if (ret < 0) {
+ GTP_ERROR("Read version failed.");
+ }
+
+ ret = gtp_init_panel(ts);
+ if (ret < 0) {
+ GTP_ERROR("GTP init panel failed.");
+ ts->abs_x_max = GTP_MAX_WIDTH;
+ ts->abs_y_max = GTP_MAX_HEIGHT;
+ ts->int_trigger_type = GTP_INT_TRIGGER;
+ }
+
+#if GTP_AUTO_UPDATE
+ ret = gup_init_update_proc(ts);
+ if (ret < 0) {
+ GTP_ERROR("Create update thread error.");
+ }
+#endif
+
+ ret = gtp_request_input_dev(ts);
+ if (ret < 0) {
+ GTP_ERROR("GTP request input dev failed");
+ }
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+ ts->early_suspend.suspend = goodix_ts_early_suspend;
+ ts->early_suspend.resume = goodix_ts_late_resume;
+ register_early_suspend(&ts->early_suspend);
+#endif
+
+ ret = gtp_request_irq(ts);
+ if (ret < 0) {
+ GTP_INFO("GTP works in polling mode.");
+ } else {
+ GTP_INFO("GTP works in interrupt mode.");
+ }
+
+ if (ts->use_irq) {
+ gtp_irq_enable(ts);
+ }
+
+#if GTP_CREATE_WR_NODE
+ init_wr_node(client);
+#endif
+
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(client, SWITCH_ON);
+#endif
+ return 0;
+}
+
+
+/*******************************************************
+Function:
+ Goodix touchscreen driver release function.
+Input:
+ client: i2c device struct.
+Output:
+ Executive outcomes. 0---succeed.
+*******************************************************/
+static int goodix_ts_remove(struct i2c_client *client)
+{
+ struct goodix_ts_data *ts = i2c_get_clientdata(client);
+
+ GTP_DEBUG_FUNC();
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ unregister_early_suspend(&ts->early_suspend);
+#endif
+
+#if GTP_CREATE_WR_NODE
+ uninit_wr_node();
+#endif
+
+#if GTP_ESD_PROTECT
+ destroy_workqueue(gtp_esd_check_workqueue);
+#endif
+
+ if (ts) {
+ if (ts->use_irq) {
+ GTP_GPIO_AS_INPUT(GTP_INT_PORT);
+ GTP_GPIO_FREE(GTP_INT_PORT);
+ free_irq(client->irq, ts);
+ } else {
+ hrtimer_cancel(&ts->timer);
+ }
+ }
+
+ GTP_INFO("GTP driver removing...");
+ i2c_set_clientdata(client, NULL);
+ input_unregister_device(ts->input_dev);
+ kfree(ts);
+
+ return 0;
+}
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+/*******************************************************
+Function:
+ Early suspend function.
+Input:
+ h: early_suspend struct.
+Output:
+ None.
+*******************************************************/
+static void goodix_ts_early_suspend(struct early_suspend *h)
+{
+ struct goodix_ts_data *ts;
+ s8 ret = -1;
+ ts = container_of(h, struct goodix_ts_data, early_suspend);
+
+ GTP_DEBUG_FUNC();
+
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(ts->client, SWITCH_OFF);
+#endif
+ ts->gtp_is_suspend = 1;
+
+#if GTP_SLIDE_WAKEUP
+ ret = gtp_enter_doze(ts);
+#else
+ if (ts->use_irq) {
+ gtp_irq_disable(ts);
+ } else {
+ hrtimer_cancel(&ts->timer);
+ }
+ ret = gtp_enter_sleep(ts);
+#endif
+ if (ret < 0) {
+ GTP_ERROR("GTP early suspend failed.");
+ }
+ // to avoid waking up while not sleeping
+ // delay 48 + 10ms to ensure reliability
+ msleep(58);
+}
+
+/*******************************************************
+Function:
+ Late resume function.
+Input:
+ h: early_suspend struct.
+Output:
+ None.
+*******************************************************/
+static void goodix_ts_late_resume(struct early_suspend *h)
+{
+ struct goodix_ts_data *ts;
+ s8 ret = -1;
+ ts = container_of(h, struct goodix_ts_data, early_suspend);
+
+ GTP_DEBUG_FUNC();
+
+ ret = gtp_wakeup_sleep(ts);
+
+#if GTP_SLIDE_WAKEUP
+ doze_status = DOZE_DISABLED;
+#endif
+
+ if (ret < 0) {
+ GTP_ERROR("GTP later resume failed.");
+ }
+#if (GTP_COMPATIBLE_MODE)
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ // do nothing
+ } else
+#endif
+ {
+ gtp_send_cfg(ts->client);
+ }
+
+ if (ts->use_irq) {
+ gtp_irq_enable(ts);
+ } else {
+ hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
+ }
+
+ ts->gtp_is_suspend = 0;
+#if GTP_ESD_PROTECT
+ gtp_esd_switch(ts->client, SWITCH_ON);
+#endif
+}
+#endif
+
+#if GTP_ESD_PROTECT
+s32 gtp_i2c_read_no_rst(struct i2c_client *client, u8 *buf, s32 len)
+{
+ struct i2c_msg msgs[2];
+ s32 ret=-1;
+ s32 retries = 0;
+
+ GTP_DEBUG_FUNC();
+
+ msgs[0].flags = !I2C_M_RD;
+ msgs[0].addr = client->addr;
+ msgs[0].len = GTP_ADDR_LENGTH;
+ msgs[0].buf = &buf[0];
+ //msgs[0].scl_rate = 300 * 1000; // for Rockchip, etc.
+
+ msgs[1].flags = I2C_M_RD;
+ msgs[1].addr = client->addr;
+ msgs[1].len = len - GTP_ADDR_LENGTH;
+ msgs[1].buf = &buf[GTP_ADDR_LENGTH];
+ //msgs[1].scl_rate = 300 * 1000;
+
+ while(retries < 5) {
+ ret = i2c_transfer(client->adapter, msgs, 2);
+ if(ret == 2)break;
+ retries++;
+ }
+ if ((retries >= 5)) {
+ GTP_ERROR("I2C Read: 0x%04X, %d bytes failed, errcode: %d!", (((u16)(buf[0] << 8)) | buf[1]), len-2, ret);
+ }
+ return ret;
+}
+
+s32 gtp_i2c_write_no_rst(struct i2c_client *client,u8 *buf,s32 len)
+{
+ struct i2c_msg msg;
+ s32 ret = -1;
+ s32 retries = 0;
+
+ GTP_DEBUG_FUNC();
+
+ msg.flags = !I2C_M_RD;
+ msg.addr = client->addr;
+ msg.len = len;
+ msg.buf = buf;
+ //msg.scl_rate = 300 * 1000; // for Rockchip, etc
+
+ while(retries < 5) {
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret == 1)break;
+ retries++;
+ }
+ if((retries >= 5)) {
+ GTP_ERROR("I2C Write: 0x%04X, %d bytes failed, errcode: %d!", (((u16)(buf[0] << 8)) | buf[1]), len-2, ret);
+ }
+ return ret;
+}
+/*******************************************************
+Function:
+ switch on & off esd delayed work
+Input:
+ client: i2c device
+ on: SWITCH_ON / SWITCH_OFF
+Output:
+ void
+*********************************************************/
+void gtp_esd_switch(struct i2c_client *client, s32 on)
+{
+ struct goodix_ts_data *ts;
+
+ ts = i2c_get_clientdata(client);
+ spin_lock(&ts->esd_lock);
+
+ if (SWITCH_ON == on) { // switch on esd
+ if (!ts->esd_running) {
+ ts->esd_running = 1;
+ spin_unlock(&ts->esd_lock);
+ GTP_INFO("Esd started");
+ queue_delayed_work(gtp_esd_check_workqueue, &gtp_esd_check_work, ts->clk_tick_cnt);
+ } else {
+ spin_unlock(&ts->esd_lock);
+ }
+ } else { // switch off esd
+ if (ts->esd_running) {
+ ts->esd_running = 0;
+ spin_unlock(&ts->esd_lock);
+ GTP_INFO("Esd cancelled");
+ cancel_delayed_work_sync(&gtp_esd_check_work);
+ } else {
+ spin_unlock(&ts->esd_lock);
+ }
+ }
+}
+
+/*******************************************************
+Function:
+ Initialize external watchdog for esd protect
+Input:
+ client: i2c device.
+Output:
+ result of i2c write operation.
+ 1: succeed, otherwise: failed
+*********************************************************/
+static s32 gtp_init_ext_watchdog(struct i2c_client *client)
+{
+ u8 opr_buffer[3] = {0x80, 0x41, 0xAA};
+ GTP_DEBUG("[Esd]Init external watchdog");
+ return gtp_i2c_write_no_rst(client, opr_buffer, 3);
+}
+
+/*******************************************************
+Function:
+ Esd protect function.
+ External watchdog added by meta, 2013/03/07
+Input:
+ work: delayed work
+Output:
+ None.
+*******************************************************/
+static void gtp_esd_check_func(struct work_struct *work)
+{
+ s32 i;
+ s32 ret = -1;
+ struct goodix_ts_data *ts = NULL;
+ u8 esd_buf[4] = {0x80, 0x40};
+
+ GTP_DEBUG_FUNC();
+
+ ts = i2c_get_clientdata(i2c_connect_client);
+
+ if (ts->gtp_is_suspend) {
+ GTP_INFO("Esd suspended!");
+ return;
+ }
+
+ for (i = 0; i < 3; i++) {
+ ret = gtp_i2c_read_no_rst(ts->client, esd_buf, 4);
+
+ GTP_DEBUG("[Esd]0x8040 = 0x%02X, 0x8041 = 0x%02X", esd_buf[2], esd_buf[3]);
+ if ((ret < 0)) {
+ // IIC communication problem
+ continue;
+ } else {
+ if ((esd_buf[2] == 0xAA) || (esd_buf[3] != 0xAA)) {
+ // IC works abnormally..
+ u8 chk_buf[4] = {0x80, 0x40};
+
+ gtp_i2c_read_no_rst(ts->client, chk_buf, 4);
+
+ GTP_DEBUG("[Check]0x8040 = 0x%02X, 0x8041 = 0x%02X", chk_buf[2], chk_buf[3]);
+
+ if ((chk_buf[2] == 0xAA) || (chk_buf[3] != 0xAA)) {
+ i = 3;
+ break;
+ } else {
+ continue;
+ }
+ } else {
+ // IC works normally, Write 0x8040 0xAA, feed the dog
+ esd_buf[2] = 0xAA;
+ gtp_i2c_write_no_rst(ts->client, esd_buf, 3);
+ break;
+ }
+ }
+ }
+ if (i >= 3) {
+#if GTP_COMPATIBLE_MODE
+ if (CHIP_TYPE_GT9F == ts->chip_type) {
+ if (ts->rqst_processing) {
+ GTP_INFO("Request processing, no esd recovery");
+ } else {
+ GTP_ERROR("IC working abnormally! Process esd recovery.");
+ gtp_esd_recovery(ts->client);
+ }
+ } else
+#endif
+ {
+ GTP_ERROR("IC working abnormally! Process reset guitar.");
+ gtp_reset_guitar(ts->client, 50);
+ }
+ }
+
+ if(!ts->gtp_is_suspend) {
+ queue_delayed_work(gtp_esd_check_workqueue, &gtp_esd_check_work, ts->clk_tick_cnt);
+ } else {
+ GTP_INFO("Esd suspended!");
+ }
+ return;
+}
+#endif
+
+static const struct i2c_device_id goodix_ts_id[] = {
+ { GTP_I2C_NAME, 0 },
+ { }
+};
+
+static struct i2c_driver goodix_ts_driver = {
+ .probe = goodix_ts_probe,
+ .remove = goodix_ts_remove,
+#ifndef CONFIG_HAS_EARLYSUSPEND
+ .suspend = goodix_ts_early_suspend,
+ .resume = goodix_ts_late_resume,
+#endif
+ .id_table = goodix_ts_id,
+ .driver = {
+ .name = GTP_I2C_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+/*******************************************************
+Function:
+ Driver Install function.
+Input:
+ None.
+Output:
+ Executive Outcomes. 0---succeed.
+********************************************************/
+static int /*__devinit*/ goodix_ts_init(void)
+{
+ s32 ret;
+
+ GTP_DEBUG_FUNC();
+ GTP_INFO("GTP driver installing...");
+ goodix_wq = create_singlethread_workqueue("goodix_wq");
+ if (!goodix_wq) {
+ GTP_ERROR("Creat workqueue failed.");
+ return -ENOMEM;
+ }
+#if GTP_ESD_PROTECT
+ INIT_DELAYED_WORK(&gtp_esd_check_work, gtp_esd_check_func);
+ gtp_esd_check_workqueue = create_workqueue("gtp_esd_check");
+#endif
+ ret = i2c_add_driver(&goodix_ts_driver);
+ return ret;
+}
+
+/*******************************************************
+Function:
+ Driver uninstall function.
+Input:
+ None.
+Output:
+ Executive Outcomes. 0---succeed.
+********************************************************/
+static void __exit goodix_ts_exit(void)
+{
+ GTP_DEBUG_FUNC();
+ GTP_INFO("GTP driver exited.");
+ i2c_del_driver(&goodix_ts_driver);
+ if (goodix_wq) {
+ destroy_workqueue(goodix_wq);
+ }
+}
+
+late_initcall(goodix_ts_init);
+module_exit(goodix_ts_exit);
+
+MODULE_DESCRIPTION("GTP Series Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-15 19:38:02 +0000