Merge "input: touchscreen: Change dev_pm_ops for Goodix driver"

drivers/input/touchscreen/gt9xx/goodix_tool.c

@@ -23,16 +23,15 @@
 
 #include "gt9xx.h"
 #include <linux/mutex.h>
+#include <linux/proc_fs.h>
+#include <linux/debugfs.h>
 
 #define DATA_LENGTH_UINT    512
-#define CMD_HEAD_LENGTH     (sizeof(st_cmd_head) - sizeof(u8 *))
+#define CMD_HEAD_LENGTH     (sizeof(struct st_cmd_head) - sizeof(u8 *))
 static char procname[20] = {0};
 
-#define UPDATE_FUNCTIONS
-
-#pragma pack(1)
-struct {
-	u8  wr;		/* write read flag£¬0:R  1:W  2:PID 3: */
+struct st_cmd_head {
+	u8  wr;		/* write read flag 0:R 1:W 2:PID 3: */
 	u8  flag;	/* 0:no need flag/int 1: need flag  2:need int */
 	u8 flag_addr[2];/* flag address */
 	u8  flag_val;	/* flag val */
@@ -46,9 +45,9 @@ struct {
 	u8  addr[2];	/* address */
 	u8  res[3];	/* reserved */
 	u8  *data;	/* data pointer */
-} st_cmd_head;
-#pragma pack()
-st_cmd_head cmd_head;
+} __packed;
+
+static struct st_cmd_head cmd_head;
 
 static struct i2c_client *gt_client;
 
@@ -56,15 +55,11 @@ static struct proc_dir_entry *goodix_proc_entry;
 
 static struct mutex lock;
 
-static s32 goodix_tool_write(struct file *filp, const char __user *buff,
-						unsigned long len, void *data);
-static s32 goodix_tool_read(char *page, char **start, off_t off, int count,
-							int *eof, void *data);
 static s32 (*tool_i2c_read)(u8 *, u16);
 static s32 (*tool_i2c_write)(u8 *, u16);
 
-s32 DATA_LENGTH;
-s8 IC_TYPE[16] = {0};
+s32 data_length;
+s8 ic_type[16] = {0};
 
 static void tool_set_proc_name(char *procname)
 {
@@ -113,7 +108,7 @@ static s32 tool_i2c_read_no_extra(u8 *buf, u16 len)
 	}
 
 	if (i == cmd_head.retry) {
-		dev_err(&client->dev, "I2C read retry limit over.\n");
+		dev_err(&gt_client->dev, "I2C read retry limit over\n");
 		ret = -EIO;
 	}
 
@@ -138,7 +133,7 @@ static s32 tool_i2c_write_no_extra(u8 *buf, u16 len)
 	}
 
 	if (i == cmd_head.retry) {
-		dev_err(&client->dev, "I2C write retry limit over.\n");
+		dev_err(&gt_client->dev, "I2C write retry limit over\n");
 		ret = -EIO;
 	}
 
@@ -173,17 +168,17 @@ static s32 tool_i2c_write_with_extra(u8 *buf, u16 len)
 
 static void register_i2c_func(void)
 {
-	if (strcmp(IC_TYPE, "GT8110") && strcmp(IC_TYPE, "GT8105")
-	&& strcmp(IC_TYPE, "GT801") && strcmp(IC_TYPE, "GT800")
-	&& strcmp(IC_TYPE, "GT801PLUS") && strcmp(IC_TYPE, "GT811")
-	&& strcmp(IC_TYPE, "GTxxx")) {
+	if (strcmp(ic_type, "GT8110") && strcmp(ic_type, "GT8105")
+	&& strcmp(ic_type, "GT801") && strcmp(ic_type, "GT800")
+	&& strcmp(ic_type, "GT801PLUS") && strcmp(ic_type, "GT811")
+	&& strcmp(ic_type, "GTxxx")) {
 		tool_i2c_read = tool_i2c_read_with_extra;
 		tool_i2c_write = tool_i2c_write_with_extra;
-		pr_debug("I2C function: with pre and end cmd!\n");
+		pr_debug("I2C function: with pre and end cmd\n");
 	} else {
 		tool_i2c_read = tool_i2c_read_no_extra;
 		tool_i2c_write = tool_i2c_write_no_extra;
-		pr_info("I2C function: without pre and end cmd!\n");
+		pr_info("I2C function: without pre and end cmd\n");
 	}
 }
 
@@ -191,57 +186,14 @@ static void unregister_i2c_func(void)
 {
 	tool_i2c_read = NULL;
 	tool_i2c_write = NULL;
-	pr_info("I2C function: unregister i2c transfer function!\n");
-}
-
-s32 init_wr_node(struct i2c_client *client)
-{
-	u8 i;
-
-	gt_client = client;
-	memset(&cmd_head, 0, sizeof(cmd_head));
-	cmd_head.data = NULL;
-
-	i = 5;
-	while ((!cmd_head.data) && i) {
-		cmd_head.data = devm_kzalloc(&client->dev,
-				i * DATA_LENGTH_UINT, GFP_KERNEL);
-		if (cmd_head.data)
-			break;
-		i--;
-	}
-	if (i) {
-		DATA_LENGTH = i * DATA_LENGTH_UINT;
-		dev_dbg(&client->dev, "Applied memory size:%d.", DATA_LENGTH);
-	} else {
-		pr_err("Apply for memory failed.\n");
-		return FAIL;
-	}
-
-	cmd_head.addr_len = 2;
-	cmd_head.retry = 5;
-
-	register_i2c_func();
-
-	mutex_init(&lock);
-	tool_set_proc_name(procname);
-	goodix_proc_entry = create_proc_entry(procname, 0660, NULL);
-	if (goodix_proc_entry == NULL) {
-		pr_err("Couldn't create proc entry!\n");
-		return FAIL;
-	}
-	GTP_INFO("Create proc entry success!");
-	goodix_proc_entry->write_proc = goodix_tool_write;
-	dix_proc_entry->read_proc = goodix_tool_read;
-
-	return SUCCESS;
+	pr_info("I2C function: unregister i2c transfer function\n");
 }
 
 void uninit_wr_node(void)
 {
 	cmd_head.data = NULL;
 	unregister_i2c_func();
-	remove_proc_entry(procname, NULL);
+	proc_remove(goodix_proc_entry);
 }
 
 static u8 relation(u8 src, u8 dst, u8 rlt)
@@ -256,7 +208,7 @@ static u8 relation(u8 src, u8 dst, u8 rlt)
 
 	case 1:
 		ret = (src == dst) ? true : false;
-		pr_debug("equal:src:0x%02x   dst:0x%02x  ret:%d.\n",
+		pr_debug("equal:src:0x%02x   dst:0x%02x  ret:%d\n",
 					src, dst, (s32)ret);
 		break;
 
@@ -298,23 +250,18 @@ static u8 comfirm(void)
 	s32 i = 0;
 	u8 buf[32];
 
-/*    memcpy(&buf[GTP_ADDR_LENGTH - cmd_head.addr_len],
- *			&cmd_head.flag_addr, cmd_head.addr_len);
- *   memcpy(buf, &cmd_head.flag_addr, cmd_head.addr_len);
- *		//Modified by Scott, 2012-02-17
- */
 	memcpy(buf, cmd_head.flag_addr, cmd_head.addr_len);
 
 	for (i = 0; i < cmd_head.times; i++) {
 		if (tool_i2c_read(buf, 1) <= 0) {
-			pr_err("Read flag data failed!\n");
+			dev_err(&gt_client->dev, "Read flag data failed");
 			return FAIL;
 		}
 		if (true == relation(buf[GTP_ADDR_LENGTH], cmd_head.flag_val,
 						cmd_head.flag_relation)) {
-			pr_debug("value at flag addr:0x%02x.\n",
+			pr_debug("value at flag addr:0x%02x\n",
 						buf[GTP_ADDR_LENGTH]);
-			pr_debug("flag value:0x%02x.\n", cmd_head.flag_val);
+			pr_debug("flag value:0x%02x\n", cmd_head.flag_val);
 			break;
 		}
 
@@ -322,89 +269,99 @@ static u8 comfirm(void)
 	}
 
 	if (i >= cmd_head.times) {
-		pr_debug("Didn't get the flag to continue!\n");
+		dev_err(&gt_client->dev, "Didn't get the flag to continue");
 		return FAIL;
 	}
 
 	return SUCCESS;
 }
 
-/********************************************************
+#ifdef CONFIG_GT9XX_TOUCHPANEL_UPDATE
+static s32 fill_update_info(char __user *user_buf,
+				    size_t count, loff_t *ppos)
+{
+	u8 buf[4];
+
+	buf[0] = show_len >> 8;
+	buf[1] = show_len & 0xff;
+	buf[2] = total_len >> 8;
+	buf[3] = total_len & 0xff;
+	return simple_read_from_buffer(user_buf, count, ppos,
+			buf, sizeof(buf));
+}
+#else
+static s32 fill_update_info(char __user *user_buf,
+				    size_t count, loff_t *ppos)
+{
+	return -ENODEV;
+}
+#endif
+
+/*
  * Function:
  *   Goodix tool write function.
  * Input:
  * standard proc write function param.
  * Output:
  *   Return write length.
- *******************************************************
  */
-static s32 goodix_tool_write(struct file *filp, const char __user *buff,
-						unsigned long len, void *data)
+static s32 goodix_tool_write(struct file *filp, const char __user *userbuf,
+						size_t count, loff_t *ppos)
 {
 	s32 ret = 0;
 
 	mutex_lock(&lock);
-	ret = copy_from_user(&cmd_head, buff, CMD_HEAD_LENGTH);
+	ret = copy_from_user(&cmd_head, userbuf, CMD_HEAD_LENGTH);
 	if (ret) {
-		pr_err("copy_from_user failed.\n");
-		ret = -EACCES;
+		dev_err(&gt_client->dev, "copy_from_user failed");
+		ret = -EFAULT;
 		goto exit;
 	}
 
-	pr_debug("wr  :0x%02x.\n", cmd_head.wr);
-	pr_debug("flag:0x%02x.\n", cmd_head.flag);
-	pr_debug("flag addr:0x%02x%02x.\n", cmd_head.flag_addr[0],
-						cmd_head.flag_addr[1]);
-	pr_debug("flag val:0x%02x.\n", cmd_head.flag_val);
-	pr_debug("flag rel:0x%02x.\n", cmd_head.flag_relation);
-	pr_debug("circle  :%d.\n", (s32)cmd_head.circle);
-	pr_debug("times   :%d.\n", (s32)cmd_head.times);
-	pr_debug("retry   :%d.\n", (s32)cmd_head.retry);
-	pr_debug("delay   :%d.\n", (s32)cmd_head.delay);
-	pr_debug("data len:%d.\n", (s32)cmd_head.data_len);
-	pr_debug("addr len:%d.\n", (s32)cmd_head.addr_len);
-	pr_debug("addr:0x%02x%02x.\n", cmd_head.addr[0], cmd_head.addr[1]);
-	pr_debug("len:%d.\n", (s32)len);
-	pr_debug("buf[20]:0x%02x.\n", buff[CMD_HEAD_LENGTH]);
+	dev_dbg(&gt_client->dev, "wr:0x%02x, flag:0x%02x, flag addr:0x%02x%02x,
+			flag val:0x%02x, flag rel:0x%02x,", cmd_headd.wr,
+			cmd_head.flag, cmd_head.flag_addr[0],
+			cmd_head.flag_addr[1], cmd_head.flag_val,
+			cmd_head.flag_relation);
+	dev_dbg(&gt_client->dev, "circle:%d, times:%d, retry:%d, delay:%d,
+		data len:%d, addr len:%d, addr:0x%02x%02x, write len: %d",
+		(s32)cmd_head.circle, (s32)cmd_head.times, (s32)cmd_head.retry,
+		(s32)cmd_head.delay, (s32)cmd_head.data_len,
+		(s32)cmd_head.addr_len, cmd_head.addr[0], cmd_head.addr[1],
+		(s32)count);
 
-	if (cmd_head.data_len > (DATA_LENGTH - GTP_ADDR_LENGTH)) {
-		pr_debug("data len %d > data buff %d, rejected!\n",
-			cmd_head.data_len, (DATA_LENGTH - GTP_ADDR_LENGTH));
-		ret = -EINVAL;
-		goto exit;
-	}
-	if (cmd_head.addr_len > GTP_ADDR_LENGTH) {
-		pr_debug(" addr len %d > data buff %d, rejected!\n",
-			cmd_head.addr_len, GTP_ADDR_LENGTH);
+	if (cmd_head.data_len > (data_length - GTP_ADDR_LENGTH)) {
+		dev_err(&gt_client->dev, "data len %d > data buff %d, rejected\n",
+			cmd_head.data_len, (data_length - GTP_ADDR_LENGTH));
 		ret = -EINVAL;
 		goto exit;
 	}
 
-	if (cmd_head.wr == 1) {
-		/*  copy_from_user(&cmd_head.data[cmd_head.addr_len],
-		 *		&buff[CMD_HEAD_LENGTH], cmd_head.data_len);
-		 */
+	if (cmd_head.wr == GTP_RW_WRITE) {
 		ret = copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH],
-				&buff[CMD_HEAD_LENGTH], cmd_head.data_len);
-		if (ret)
-			pr_err("copy_from_user failed.\n");
+				&userbuf[CMD_HEAD_LENGTH], cmd_head.data_len);
+		if (ret) {
+			dev_err(&gt_client->dev, "copy_from_user failed");
+			ret = -EFAULT;
+			goto exit;
+		}
 
 		memcpy(&cmd_head.data[GTP_ADDR_LENGTH - cmd_head.addr_len],
 					cmd_head.addr, cmd_head.addr_len);
 
-		if (cmd_head.flag == 1) {
+		if (cmd_head.flag == GTP_NEED_FLAG) {
 			if (comfirm() ==  FAIL) {
-				pr_err("[WRITE]Comfirm fail!\n");
+				dev_err(&gt_client->dev, "Confirm fail");
 				ret = -EINVAL;
 				goto exit;
 			}
-		} else if (cmd_head.flag == 2) {
+		} else if (cmd_head.flag == GTP_NEED_INTERRUPT) {
 			/* Need interrupt! */
 		}
 		if (tool_i2c_write(
 		&cmd_head.data[GTP_ADDR_LENGTH - cmd_head.addr_len],
 		cmd_head.data_len + cmd_head.addr_len) <= 0) {
-			pr_err("[WRITE]Write data failed!\n");
+			dev_err(&gt_client->dev, "Write data failed");
 			ret = -EIO;
 			goto exit;
 		}
@@ -414,32 +371,33 @@ static s32 goodix_tool_write(struct file *filp, const char __user *buff,
 
 		ret = cmd_head.data_len + CMD_HEAD_LENGTH;
 		goto exit;
-	} else if (cmd_head.wr == 3) {  /* Write ic type */
-
-		ret = copy_from_user(&cmd_head.data[0], &buff[CMD_HEAD_LENGTH],
+	} else if (cmd_head.wr == GTP_RW_WRITE_IC_TYPE) {  /* Write ic type */
+		ret = copy_from_user(&cmd_head.data[0],
+				&userbuf[CMD_HEAD_LENGTH],
 				cmd_head.data_len);
-		if (ret)
-			pr_err("copy_from_user failed.\n");
+		if (ret) {
+			dev_err(&gt_client->dev, "copy_from_user failed");
+			ret = -EFAULT;
+			goto exit;
+		}
 
-		if (cmd_head.data_len > sizeof(IC_TYPE)) {
-			pr_debug("<<-GTP->> data len %d > data buff %d, rejected!\n",
-			cmd_head.data_len, sizeof(IC_TYPE));
+		if (cmd_head.data_len > sizeof(ic_type)) {
+			dev_err(&gt_client->dev,
+				"data len %d > data buff %d, rejected\n",
+				cmd_head.data_len, sizeof(ic_type));
 			ret = -EINVAL;
 			goto exit;
 		}
-		memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len);
+		memcpy(ic_type, cmd_head.data, cmd_head.data_len);
 
 		register_i2c_func();
 
 		ret = cmd_head.data_len + CMD_HEAD_LENGTH;
 		goto exit;
-	} else if (cmd_head.wr == 5) {
-
-		/* memcpy(IC_TYPE, cmd_head.data, cmd_head.data_len); */
-
+	} else if (cmd_head.wr == GTP_RW_NO_WRITE) {
 		ret = cmd_head.data_len + CMD_HEAD_LENGTH;
 		goto exit;
-	} else if (cmd_head.wr == 7) { /* disable irq! */
+	} else if (cmd_head.wr == GTP_RW_DISABLE_IRQ) { /* disable irq! */
 		gtp_irq_disable(i2c_get_clientdata(gt_client));
 
 		#if GTP_ESD_PROTECT
@@ -447,7 +405,7 @@ static s32 goodix_tool_write(struct file *filp, const char __user *buff,
 		#endif
 		ret = CMD_HEAD_LENGTH;
 		goto exit;
-	} else if (cmd_head.wr == 9) { /* enable irq! */
+	} else if (cmd_head.wr == GTP_RW_ENABLE_IRQ) { /* enable irq! */
 		gtp_irq_enable(i2c_get_clientdata(gt_client));
 
 		#if GTP_ESD_PROTECT
@@ -455,41 +413,45 @@ static s32 goodix_tool_write(struct file *filp, const char __user *buff,
 		#endif
 		ret = CMD_HEAD_LENGTH;
 		goto exit;
-	} else if (cmd_head.wr == 17) {
+	} else if (cmd_head.wr == GTP_RW_CHECK_RAWDIFF_MODE) {
 		struct goodix_ts_data *ts = i2c_get_clientdata(gt_client);
 
 		ret = copy_from_user(&cmd_head.data[GTP_ADDR_LENGTH],
-				&buff[CMD_HEAD_LENGTH], cmd_head.data_len);
-		if (ret)
-			pr_debug("copy_from_user failed.\n");
+				&userbuf[CMD_HEAD_LENGTH], cmd_head.data_len);
+		if (ret) {
+			dev_err(&gt_client->dev, "copy_from_user failed");
+			goto exit;
+		}
 		if (cmd_head.data[GTP_ADDR_LENGTH]) {
-			pr_debug("gtp enter rawdiff.\n");
+			pr_debug("gtp enter rawdiff\n");
 			ts->gtp_rawdiff_mode = true;
 		} else {
 			ts->gtp_rawdiff_mode = false;
-			pr_debug("gtp leave rawdiff.\n");
+			pr_debug("gtp leave rawdiff\n");
 		}
 		ret = CMD_HEAD_LENGTH;
 		goto exit;
-	}
-#ifdef UPDATE_FUNCTIONS
-	else if (cmd_head.wr == 11) { /* Enter update mode! */
-		if (gup_enter_update_mode(gt_client) == FAIL)
+	} else if (cmd_head.wr == GTP_RW_ENTER_UPDATE_MODE) {
+		/* Enter update mode! */
+		if (gup_enter_update_mode(gt_client) ==  FAIL) {
 			ret = -EBUSY;
 			goto exit;
-	} else if (cmd_head.wr == 13) { /* Leave update mode! */
-		gup_leave_update_mode();
-	} else if (cmd_head.wr == 15) { /* Update firmware! */
+		}
+	} else if (cmd_head.wr == GTP_RW_LEAVE_UPDATE_MODE) {
+		/* Leave update mode! */
+		gup_leave_update_mode(gt_client);
+	} else if (cmd_head.wr == GTP_RW_UPDATE_FW) {
+		/* Update firmware! */
 		show_len = 0;
 		total_len = 0;
-		if (cmd_head.data_len + 1 > DATA_LENGTH) {
-			pr_debug("<<-GTP->> data len %d > data buff %d, rejected!\n",
-			cmd_head.data_len + 1, DATA_LENGTH);
+		if (cmd_head.data_len + 1 > data_length) {
+			dev_err(&gt_client->dev, "data len %d > data buff %d, rejected\n",
+			cmd_head.data_len + 1, data_length);
 			ret = -EINVAL;
 			goto exit;
 		}
 		memset(cmd_head.data, 0, cmd_head.data_len + 1);
-		memcpy(cmd_head.data, &buff[CMD_HEAD_LENGTH],
+		memcpy(cmd_head.data, &userbuf[CMD_HEAD_LENGTH],
 					cmd_head.data_len);
 
 		if (gup_update_proc((void *)cmd_head.data) == FAIL) {
@@ -497,7 +459,6 @@ static s32 goodix_tool_write(struct file *filp, const char __user *buff,
 			goto exit;
 		}
 	}
-#endif
 	ret = CMD_HEAD_LENGTH;
 
 exit:
@@ -505,37 +466,37 @@ exit:
 	return ret;
 }
 
-/*******************************************************
+/*
  * Function:
  *   Goodix tool read function.
  * Input:
  * standard proc read function param.
  * Output:
  *   Return read length.
- *******************************************************
-*/
-static s32 goodix_tool_read(char *page, char **start, off_t off, int count,
-							int *eof, void *data)
+ */
+static s32 goodix_tool_read(struct file *file, char __user *user_buf,
+					size_t count, loff_t *ppos)
 {
+	u16 data_len = 0;
 	s32 ret;
+	u8 buf[32];
 
 	mutex_lock(&lock);
-	if (cmd_head.wr % 2) {
-		pr_err("<< [READ]command head wrong\n");
-		ret = -EINVAL;
-		goto exit;
-	} else if (!cmd_head.wr) {
-		u16 len = 0;
-		s16 data_len = 0;
-		u16 loc = 0;
-
-		if (cmd_head.flag == 1) {
-			if (comfirm() == FAIL) {
-				pr_err("[READ]Comfirm fail!\n");
+	if (cmd_head.wr & 0x1) {
+		dev_err(&gt_client->dev, "command head wrong\n");
 		ret = -EINVAL;
 		goto exit;
 	}
-		} else if (cmd_head.flag == 2) {
+
+	switch (cmd_head.wr) {
+	case GTP_RW_READ:
+		if (cmd_head.flag == GTP_NEED_FLAG) {
+			if (comfirm() == FAIL) {
+				dev_err(&gt_client->dev, "Confirm fail");
+				ret = -EINVAL;
+				goto exit;
+			}
+		} else if (cmd_head.flag == GTP_NEED_INTERRUPT) {
 			/* Need interrupt! */
 		}
 
@@ -550,54 +511,86 @@ static s32 goodix_tool_read(char *page, char **start, off_t off, int count,
 			msleep(cmd_head.delay);
 
 		data_len = cmd_head.data_len;
-		while (data_len > 0) {
-			if (data_len > DATA_LENGTH)
-				len = DATA_LENGTH;
-			else
-				len = data_len;
-
-			data_len -= len;
-
-			if (tool_i2c_read(cmd_head.data, len) <= 0) {
-				pr_err("[READ]Read data failed!\n");
+		if (data_len <= 0 || (data_len > data_length)) {
+			dev_err(&gt_client->dev, "Invalid data length %d\n",
+				data_len);
 			ret = -EINVAL;
 			goto exit;
 		}
-			memcpy(&page[loc], &cmd_head.data[GTP_ADDR_LENGTH],
-									len);
-			loc += len;
-		}
-	} else if (cmd_head.wr == 2) {
-		/* memcpy(page, "gt8", cmd_head.data_len);
-		 * memcpy(page, "GT818", 5);
-		 * page[5] = 0;
-		 */
+		if (data_len > count)
+			data_len = count;
 
-		pr_debug("Return ic type:%s len:%d.\n", page,
-						(s32)cmd_head.data_len);
-		ret = cmd_head.data_len;
+		if (tool_i2c_read(cmd_head.data, data_len) <= 0) {
+			dev_err(&gt_client->dev, "Read data failed\n");
+			ret = -EIO;
 			goto exit;
-		/* return sizeof(IC_TYPE_NAME); */
-	} else if (cmd_head.wr == 4) {
-		page[0] = show_len >> 8;
-		page[1] = show_len & 0xff;
-		page[2] = total_len >> 8;
-		page[3] = total_len & 0xff;
-	} else if (cmd_head.wr == 6) {
-		/* Read error code! */
-	} else if (cmd_head.wr == 8) { /*Read driver version */
-		/* memcpy(page, GTP_DRIVER_VERSION,
-		 *		strlen(GTP_DRIVER_VERSION));
-		 */
-		s32 tmp_len;
-
-		tmp_len = strlen(GTP_DRIVER_VERSION);
-		memcpy(page, GTP_DRIVER_VERSION, tmp_len);
-		page[tmp_len] = 0;
 		}
-	ret = cmd_head.data_len;
+		ret = simple_read_from_buffer(user_buf, count, ppos,
+			&cmd_head.data[GTP_ADDR_LENGTH], data_len);
+		break;
+	case GTP_RW_FILL_INFO:
+		ret = fill_update_info(user_buf, count, ppos);
+		break;
+	case GTP_RW_READ_VERSION:
+		/* Read driver version */
+		data_len = scnprintf(buf, sizeof(buf), "%s\n",
+			GTP_DRIVER_VERSION);
+		ret = simple_read_from_buffer(user_buf, count, ppos,
+			buf, data_len);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
 
 exit:
 	mutex_unlock(&lock);
 	return ret;
 }
+
+static const struct file_operations goodix_proc_fops = {
+	.write = goodix_tool_write,
+	.read = goodix_tool_read,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+};
+
+s32 init_wr_node(struct i2c_client *client)
+{
+	u8 i;
+
+	gt_client = client;
+	memset(&cmd_head, 0, sizeof(cmd_head));
+	cmd_head.data = NULL;
+
+	i = GTP_I2C_RETRY_5;
+	while ((!cmd_head.data) && i) {
+		cmd_head.data = devm_kzalloc(&client->dev,
+				i * DATA_LENGTH_UINT, GFP_KERNEL);
+		if (cmd_head.data)
+			break;
+		i--;
+	}
+	if (i) {
+		data_length = i * DATA_LENGTH_UINT;
+		dev_dbg(&client->dev, "Applied memory size:%d", data_length);
+	}
+
+	cmd_head.addr_len = 2;
+	cmd_head.retry = GTP_I2C_RETRY_5;
+
+	register_i2c_func();
+
+	mutex_init(&lock);
+	tool_set_proc_name(procname);
+	goodix_proc_entry = proc_create(procname,
+			S_IWUSR | S_IWGRP | S_IRUSR | S_IRGRP,
+			goodix_proc_entry,
+			&goodix_proc_fops);
+	if (goodix_proc_entry == NULL) {
+		dev_err(&client->dev, "Couldn't create proc entry");
+		return FAIL;
+	}
+
+	return SUCCESS;
+}

drivers/input/touchscreen/gt9xx/gt9xx.c

@@ -44,18 +44,16 @@
 #include "gt9xx.h"
 
 #include <linux/of_gpio.h>
-
+#include <linux/irq.h>
+#include <linux/module.h>
 #include <linux/input/mt.h>
+#include <linux/debugfs.h>
 
 #define GOODIX_DEV_NAME	"Goodix-CTP"
 #define CFG_MAX_TOUCH_POINTS	5
 #define GOODIX_COORDS_ARR_SIZE	4
 #define MAX_BUTTONS		4
 
-/* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
-#define GTP_I2C_ADDRESS_HIGH	0x14
-#define GTP_I2C_ADDRESS_LOW	0x5D
-
 #define GOODIX_VTG_MIN_UV	2600000
 #define GOODIX_VTG_MAX_UV	3300000
 #define GOODIX_I2C_VTG_MIN_UV	1800000
@@ -79,7 +77,6 @@ static const u16 touch_key_array[] = {KEY_MENU, KEY_HOMEPAGE, KEY_BACK};
 
 #endif
 
-static void gtp_reset_guitar(struct goodix_ts_data *ts, int ms);
 static void gtp_int_sync(struct goodix_ts_data *ts, int ms);
 static int gtp_i2c_test(struct i2c_client *client);
 static int goodix_power_off(struct goodix_ts_data *ts);
@@ -88,6 +85,8 @@ static int goodix_power_on(struct goodix_ts_data *ts);
 #if defined(CONFIG_FB)
 static int fb_notifier_callback(struct notifier_block *self,
 				unsigned long event, void *data);
+static int goodix_ts_suspend(struct device *dev);
+static int goodix_ts_resume(struct device *dev);
 #elif defined(CONFIG_HAS_EARLYSUSPEND)
 static void goodix_ts_early_suspend(struct early_suspend *h);
 static void goodix_ts_late_resume(struct early_suspend *h);
@@ -98,7 +97,6 @@ static struct delayed_work gtp_esd_check_work;
 static struct workqueue_struct *gtp_esd_check_workqueue;
 static void gtp_esd_check_func(struct work_struct *work);
 static int gtp_init_ext_watchdog(struct i2c_client *client);
-struct i2c_client  *i2c_connect_client;
 #endif
 
 #if GTP_SLIDE_WAKEUP
@@ -113,6 +111,10 @@ static s8 gtp_enter_doze(struct goodix_ts_data *ts);
 bool init_done;
 static u8 chip_gt9xxs;  /* true if ic is gt9xxs, like gt915s */
 u8 grp_cfg_version;
+struct i2c_client  *i2c_connect_client;
+
+#define GTP_DEBUGFS_DIR			"ts_debug"
+#define GTP_DEBUGFS_FILE_SUSPEND	"suspend"
 
 /*******************************************************
 Function:
@@ -264,7 +266,7 @@ Output:
 	result of i2c write operation.
 	> 0: succeed, otherwise: failed
 *********************************************************/
-static int gtp_send_cfg(struct goodix_ts_data *ts)
+int gtp_send_cfg(struct goodix_ts_data *ts)
 {
 	int ret;
 #if GTP_DRIVER_SEND_CFG
@@ -593,26 +595,6 @@ exit_work_func:
 	return;
 }
 
-/*******************************************************
-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);
-
-	queue_work(ts->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.
@@ -656,7 +638,7 @@ Input:
 Output:
 	None.
 *******************************************************/
-static void gtp_reset_guitar(struct goodix_ts_data *ts, int ms)
+void gtp_reset_guitar(struct goodix_ts_data *ts, int ms)
 {
 	/* This reset sequence will selcet I2C slave address */
 	gpio_direction_output(ts->pdata->reset_gpio, 0);
@@ -730,16 +712,13 @@ static s8 gtp_enter_doze(struct goodix_ts_data *ts)
 	return ret;
 }
 #else
-/*******************************************************
-Function:
-	Enter sleep mode.
-Input:
-	ts: private data.
-Output:
-	Executive outcomes.
-	>0: succeed, otherwise failed.
-*******************************************************/
-static s8 gtp_enter_sleep(struct goodix_ts_data  *ts)
+/**
+ * gtp_enter_sleep - Enter sleep mode
+ * @ts: driver private data
+ *
+ * Returns zero on success, else an error.
+ */
+static u8 gtp_enter_sleep(struct goodix_ts_data *ts)
 {
 	int ret = -1;
 	s8 retry = 0;
@@ -761,16 +740,16 @@ static s8 gtp_enter_sleep(struct goodix_ts_data  *ts)
 		ret = goodix_power_off(ts);
 		if (ret) {
 			dev_err(&ts->client->dev, "GTP power off failed.\n");
-			return 0;
+			return ret;
 		}
-		return 1;
+		return 0;
 	}
 	usleep(5000);
 	while (retry++ < GTP_I2C_RETRY_5) {
 		ret = gtp_i2c_write(ts->client, i2c_control_buf, 3);
 		if (ret == 1) {
 			dev_dbg(&ts->client->dev, "GTP enter sleep!");
-			return ret;
+			return 0;
 		}
 		msleep(20);
 	}
@@ -1196,19 +1175,14 @@ static int gtp_request_irq(struct goodix_ts_data *ts)
 	int ret;
 	const u8 irq_table[] = GTP_IRQ_TAB;
 
-	ret = request_irq(ts->client->irq, goodix_ts_irq_handler,
+	GTP_DEBUG("INT trigger type:%x, irq=%d", ts->int_trigger_type,
+			ts->client->irq);
+
+	ret = request_threaded_irq(ts->client->irq, NULL,
+			goodix_ts_irq_handler,
 			irq_table[ts->int_trigger_type],
 			ts->client->name, ts);
 	if (ret) {
-		dev_err(&ts->client->dev, "Request IRQ failed!ERRNO:%d.\n",
-				ret);
-		gpio_direction_input(ts->pdata->irq_gpio);
-
-		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);
 		ts->use_irq = false;
 		return ret;
 	}
@@ -1560,6 +1534,56 @@ static const struct attribute_group gtp_attr_grp = {
 	.attrs = gtp_attrs,
 };
 
+static int gtp_debug_suspend_set(void *_data, u64 val)
+{
+	struct goodix_ts_data *ts = _data;
+
+	mutex_lock(&ts->input_dev->mutex);
+	if (val)
+		goodix_ts_suspend(&ts->client->dev);
+	else
+		goodix_ts_resume(&ts->client->dev);
+	mutex_unlock(&ts->input_dev->mutex);
+
+	return 0;
+}
+
+static int gtp_debug_suspend_get(void *_data, u64 *val)
+{
+	struct goodix_ts_data *ts = _data;
+
+	mutex_lock(&ts->input_dev->mutex);
+	*val = ts->gtp_is_suspend;
+	mutex_unlock(&ts->input_dev->mutex);
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(debug_suspend_fops, gtp_debug_suspend_get,
+			gtp_debug_suspend_set, "%lld\n");
+
+static int gtp_debugfs_init(struct goodix_ts_data *data)
+{
+	data->debug_base = debugfs_create_dir(GTP_DEBUGFS_DIR, NULL);
+
+	if (IS_ERR_OR_NULL(data->debug_base)) {
+		pr_err("Failed to create debugfs dir\n");
+			return -EINVAL;
+	}
+
+	if ((IS_ERR_OR_NULL(debugfs_create_file(GTP_DEBUGFS_FILE_SUSPEND,
+					S_IWUSR | S_IWGRP | S_IRUSR | S_IRGRP,
+					data->debug_base,
+					data,
+					&debug_suspend_fops)))) {
+		pr_err("Failed to create suspend file\n");
+		debugfs_remove_recursive(data->debug_base);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int goodix_ts_get_dt_coords(struct device *dev, char *name,
 				struct goodix_ts_platform_data *pdata)
 {
@@ -1694,7 +1718,7 @@ static int goodix_parse_dt(struct device *dev,
 				prop->value, pdata->config_data_len[i]);
 		read_cfg_num++;
 	}
-	dev_dbg(dev, "%d config data read from device tree.\n", read_cfg_num);
+	dev_dbg(dev, "%d config data read from device tree\n", read_cfg_num);
 
 	return 0;
 }
@@ -1783,7 +1807,7 @@ static int goodix_ts_probe(struct i2c_client *client,
 
 	ret = gtp_i2c_test(client);
 	if (ret != 2) {
-		dev_err(&client->dev, "I2C communication ERROR!\n");
+		dev_err(&client->dev, "I2C communication ERROR\n");
 		goto exit_power_off;
 	}
 
@@ -1791,7 +1815,7 @@ static int goodix_ts_probe(struct i2c_client *client,
 		strlcpy(ts->fw_name, pdata->fw_name,
 						strlen(pdata->fw_name) + 1);
 
-#if GTP_AUTO_UPDATE
+#ifdef CONFIG_GT9XX_TOUCHPANEL_UPDATE
 	ret = gup_init_update_proc(ts);
 	if (ret < 0) {
 		dev_err(&client->dev,
@@ -1834,24 +1858,24 @@ static int goodix_ts_probe(struct i2c_client *client,
 	INIT_WORK(&ts->work, goodix_ts_work_func);
 
 	ret = gtp_request_irq(ts);
-	if (ret < 0)
-		dev_info(&client->dev, "GTP works in polling mode.\n");
+	if (ret)
+		dev_info(&client->dev, "GTP request irq failed %d\n", ret);
 	else
-		dev_info(&client->dev, "GTP works in interrupt mode.\n");
+		dev_info(&client->dev, "GTP works in interrupt mode\n");
 
 	ret = gtp_read_fw_version(client, &version_info);
 	if (ret != 2)
-		dev_err(&client->dev, "GTP firmware version read failed.\n");
+		dev_err(&client->dev, "GTP firmware version read failed\n");
 
 	ret = gtp_check_product_id(client);
 	if (ret != 0) {
-		dev_err(&client->dev, "GTP Product id doesn't match.\n");
+		dev_err(&client->dev, "GTP Product id doesn't match\n");
 		goto exit_free_irq;
 	}
 	if (ts->use_irq)
 		gtp_irq_enable(ts);
 
-#if GTP_CREATE_WR_NODE
+#ifdef CONFIG_GT9XX_TOUCHPANEL_DEBUG
 	init_wr_node(client);
 #endif
 
@@ -1860,10 +1884,14 @@ static int goodix_ts_probe(struct i2c_client *client,
 #endif
 	ret = sysfs_create_group(&client->dev.kobj, &gtp_attr_grp);
 	if (ret < 0) {
-		dev_err(&client->dev, "sys file creation failed.\n");
+		dev_err(&client->dev, "sys file creation failed\n");
 		goto exit_free_irq;
 	}
 
+	ret = gtp_debugfs_init(ts);
+	if (ret != 0)
+		goto exit_remove_sysfs;
+
 	init_done = true;
 	return 0;
 exit_free_irq:
@@ -1871,7 +1899,7 @@ exit_free_irq:
 #if defined(CONFIG_FB)
 	if (fb_unregister_client(&ts->fb_notif))
 		dev_err(&client->dev,
-			"Error occurred while unregistering fb_notifier.\n");
+			"Error occurred while unregistering fb_notifier\n");
 #elif defined(CONFIG_HAS_EARLYSUSPEND)
 	unregister_early_suspend(&ts->early_suspend);
 #endif
@@ -1888,6 +1916,8 @@ exit_free_irq:
 		input_free_device(ts->input_dev);
 		ts->input_dev = NULL;
 	}
+exit_remove_sysfs:
+	sysfs_remove_group(&ts->input_dev->dev.kobj, &gtp_attr_grp);
 exit_free_inputdev:
 	kfree(ts->config_data);
 exit_power_off:
@@ -1921,13 +1951,13 @@ static int goodix_ts_remove(struct i2c_client *client)
 #if defined(CONFIG_FB)
 	if (fb_unregister_client(&ts->fb_notif))
 		dev_err(&client->dev,
-			"Error occurred while unregistering fb_notifier.\n");
+			"Error occurred while unregistering fb_notifier\n");
 #elif defined(CONFIG_HAS_EARLYSUSPEND)
 	unregister_early_suspend(&ts->early_suspend);
 #endif
 	mutex_destroy(&ts->lock);
 
-#if GTP_CREATE_WR_NODE
+#ifdef CONFIG_GT9XX_TOUCHPANEL_DEBUG
 	uninit_wr_node();
 #endif
 
@@ -1962,6 +1992,7 @@ static int goodix_ts_remove(struct i2c_client *client)
 		goodix_power_deinit(ts);
 		i2c_set_clientdata(client, NULL);
 	}
+	debugfs_remove_recursive(ts->debug_base);
 
 	return 0;
 }
@@ -1980,9 +2011,13 @@ static int goodix_ts_suspend(struct device *dev)
 	struct goodix_ts_data *ts = dev_get_drvdata(dev);
 	int ret = 0, i;
 
+	if (ts->gtp_is_suspend) {
+		dev_dbg(&ts->client->dev, "Already in suspend state\n");
+		return 0;
+	}
+
 	mutex_lock(&ts->lock);
 #if GTP_ESD_PROTECT
-	ts->gtp_is_suspend = 1;
 	gtp_esd_switch(ts->client, SWITCH_OFF);
 #endif
 
@@ -2001,13 +2036,14 @@ static int goodix_ts_suspend(struct device *dev)
 
 	ret = gtp_enter_sleep(ts);
 #endif
-	if (ret <= 0)
-		dev_err(&ts->client->dev, "GTP early suspend failed.\n");
+	if (ret < 0)
+		dev_err(&ts->client->dev, "GTP early suspend failed\n");
 	/* to avoid waking up while not sleeping,
 	 * delay 48 + 10ms to ensure reliability
 	 */
 	msleep(58);
 	mutex_unlock(&ts->lock);
+	ts->gtp_is_suspend = 1;
 
 	return ret;
 }
@@ -2025,6 +2061,11 @@ static int goodix_ts_resume(struct device *dev)
 	struct goodix_ts_data *ts = dev_get_drvdata(dev);
 	int ret = 0;
 
+	if (!ts->gtp_is_suspend) {
+		dev_dbg(&ts->client->dev, "Already in awake state\n");
+		return 0;
+	}
+
 	mutex_lock(&ts->lock);
 	ret = gtp_wakeup_sleep(ts);
 
@@ -2033,7 +2074,7 @@ static int goodix_ts_resume(struct device *dev)
 #endif
 
 	if (ret <= 0)
-		dev_err(&ts->client->dev, "GTP resume failed.\n");
+		dev_err(&ts->client->dev, "GTP resume failed\n");
 
 	if (ts->use_irq)
 		gtp_irq_enable(ts);
@@ -2042,10 +2083,10 @@ static int goodix_ts_resume(struct device *dev)
 			ktime_set(1, 0), HRTIMER_MODE_REL);
 
 #if GTP_ESD_PROTECT
-	ts->gtp_is_suspend = 0;
 	gtp_esd_switch(ts->client, SWITCH_ON);
 #endif
 	mutex_unlock(&ts->lock);
+	ts->gtp_is_suspend = 0;
 
 	return ret;
 }
@@ -2236,8 +2277,15 @@ static void gtp_esd_check_func(struct work_struct *work)
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(goodix_ts_dev_pm_ops, goodix_ts_suspend,
-					goodix_ts_resume);
+#if (!defined(CONFIG_FB) && !defined(CONFIG_HAS_EARLYSUSPEND))
+static const struct dev_pm_ops goodix_ts_dev_pm_ops = {
+	.suspend = goodix_ts_suspend,
+	.resume = goodix_ts_resume,
+};
+#else
+static const struct dev_pm_ops goodix_ts_dev_pm_ops = {
+};
+#endif
 
 static const struct i2c_device_id goodix_ts_id[] = {
 	{ GTP_I2C_NAME, 0 },

drivers/input/touchscreen/gt9xx/gt9xx.h

@@ -22,18 +22,9 @@
 
 #include <linux/kernel.h>
 #include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
 #include <linux/delay.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/gpio.h>
-#include <linux/regulator/consumer.h>
-#include <linux/firmware.h>
-#include <linux/debugfs.h>
-#include <linux/mutex.h>
+#include <linux/uaccess.h>
 
 #if defined(CONFIG_FB)
 #include <linux/notifier.h>
@@ -105,6 +96,7 @@ struct goodix_ts_data {
 #elif defined(CONFIG_HAS_EARLYSUSPEND)
 	struct early_suspend early_suspend;
 #endif
+	struct dentry *debug_base;
 };
 
 extern u16 show_len;
@@ -116,14 +108,6 @@ extern u16 total_len;
 #define GTP_DRIVER_SEND_CFG		1
 #define GTP_HAVE_TOUCH_KEY		1
 
-/* auto updated by .bin file as default */
-#define GTP_AUTO_UPDATE			0
-/* auto updated by head_fw_array in gt9xx_firmware.h,
- * function together with GTP_AUTO_UPDATE
- */
-#define GTP_HEADER_FW_UPDATE	0
-
-#define GTP_CREATE_WR_NODE		0
 #define GTP_ESD_PROTECT			0
 #define GTP_WITH_PEN			0
 
@@ -132,18 +116,6 @@ extern u16 total_len;
 /* double-click wakeup, function together with GTP_SLIDE_WAKEUP */
 #define GTP_DBL_CLK_WAKEUP		0
 
-/*************************** PART2:TODO define *******************************/
-/* STEP_1(REQUIRED): Define Configuration Information Group(s) */
-/* Sensor_ID Map: */
-/* sensor_opt1 sensor_opt2 Sensor_ID
- *	GND			GND			0
- *	VDDIO		GND			1
- *	NC			GND			2
- *	GND			NC/300K		3
- *	VDDIO		NC/300K		4
- *	NC			NC/300K		5
- */
-
 #define GTP_IRQ_TAB            {\
 				IRQ_TYPE_EDGE_RISING,\
 				IRQ_TYPE_EDGE_FALLING,\
@@ -151,7 +123,7 @@ extern u16 total_len;
 				IRQ_TYPE_LEVEL_HIGH\
 				}
 
-/* STEP_3(optional): Specify your special config info if needed */
+
 #define GTP_IRQ_TAB_RISING	0
 #define GTP_IRQ_TAB_FALLING	1
 #if GTP_CUSTOM_CFG
@@ -197,16 +169,52 @@ extern u16 total_len;
 #define RESOLUTION_LOC		3
 #define TRIGGER_LOC		8
 
+/* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
+#define GTP_I2C_ADDRESS_HIGH	0x14
+#define GTP_I2C_ADDRESS_LOW	0x5D
+
+/* GTP CM_HEAD RW flags */
+#define GTP_RW_READ			0
+#define GTP_RW_WRITE			1
+#define GTP_RW_READ_IC_TYPE		2
+#define GTP_RW_WRITE_IC_TYPE		3
+#define GTP_RW_FILL_INFO		4
+#define GTP_RW_NO_WRITE			5
+#define GTP_RW_READ_ERROR		6
+#define GTP_RW_DISABLE_IRQ		7
+#define GTP_RW_READ_VERSION		8
+#define GTP_RW_ENABLE_IRQ		9
+#define GTP_RW_ENTER_UPDATE_MODE	11
+#define GTP_RW_LEAVE_UPDATE_MODE	13
+#define GTP_RW_UPDATE_FW		15
+#define GTP_RW_CHECK_RAWDIFF_MODE	17
+
+/* GTP need flag or interrupt */
+#define GTP_NO_NEED			0
+#define GTP_NEED_FLAG			1
+#define GTP_NEED_INTERRUPT		2
+
 /*****************************End of Part III********************************/
 
 void gtp_esd_switch(struct i2c_client *client, int on);
 
-#if GTP_CREATE_WR_NODE
-extern s32 init_wr_node(struct i2c_client *client);
-extern void uninit_wr_node(void);
+int gtp_i2c_read_dbl_check(struct i2c_client *client, u16 addr,
+					u8 *rxbuf, int len);
+int gtp_send_cfg(struct goodix_ts_data *ts);
+void gtp_reset_guitar(struct goodix_ts_data *ts, int ms);
+void gtp_irq_disable(struct goodix_ts_data *ts);
+void gtp_irq_enable(struct goodix_ts_data *ts);
+
+#ifdef CONFIG_GT9XX_TOUCHPANEL_DEBUG
+s32 init_wr_node(struct i2c_client *client);
+void uninit_wr_node(void);
 #endif
 
-#if GTP_AUTO_UPDATE
+#ifdef CONFIG_GT9XX_TOUCHPANEL_UPDATE
 extern u8 gup_init_update_proc(struct goodix_ts_data *ts);
+s32 gup_enter_update_mode(struct i2c_client *client);
+void gup_leave_update_mode(struct i2c_client *client);
+s32 gup_update_proc(void *dir);
+extern struct i2c_client  *i2c_connect_client;
 #endif
 #endif /* _GOODIX_GT9XX_H_ */

drivers/input/touchscreen/gt9xx/gt9xx_firmware.h

@@ -1,6 +0,0 @@
-/*
- * make sense only when GTP_HEADER_FW_UPDATE & GTP_AUTO_UPDATE are enabled
- * define your own firmware array here
-*/
-const unsigned char header_fw_array[] = {
-};