From dde2185b030e0e023c0e11df128ca96f57757618 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Mon, 2 Jul 2018 18:27:04 +0800
Subject: [PATCH] input: touchscreen: gt1x: Change msleep to usleep_range for
 small msecs

The msleep < 20ms can sleep for up to 20ms, see:
Documentation/timers/timers-howto.txt.

Change msleep to usleep_range for this case.

Change-Id: Ibb680b766b6c7317fc1f13dfda7457ef771b4272
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
 drivers/input/touchscreen/gt1x/gt1x_extents.c |  2 +-
 drivers/input/touchscreen/gt1x/gt1x_generic.c | 16 ++++++++--------
 drivers/input/touchscreen/gt1x/gt1x_update.c  |  8 ++++----
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/input/touchscreen/gt1x/gt1x_extents.c b/drivers/input/touchscreen/gt1x/gt1x_extents.c
index aeb5f2e5649d..dc16c91ad98a 100644
--- a/drivers/input/touchscreen/gt1x/gt1x_extents.c
+++ b/drivers/input/touchscreen/gt1x/gt1x_extents.c
@@ -145,7 +145,7 @@ int gesture_enter_doze(void)
 			GTP_DEBUG("Working in doze mode!");
 			return 0;
 		}
-		msleep(10);
+		usleep_range(10000, 11000);
 	}
 	GTP_ERROR("Send doze cmd failed.");
 	return -1;
diff --git a/drivers/input/touchscreen/gt1x/gt1x_generic.c b/drivers/input/touchscreen/gt1x/gt1x_generic.c
index 98d2790949e7..c7a036b64569 100644
--- a/drivers/input/touchscreen/gt1x/gt1x_generic.c
+++ b/drivers/input/touchscreen/gt1x/gt1x_generic.c
@@ -455,7 +455,7 @@ static s32 gt1x_i2c_test(void)
 			return ret;
 		}
 
-		msleep(10);
+		usleep_range(10000, 11000);
 		GTP_ERROR("Hardware Info:%08X", hw_info);
 		GTP_ERROR("I2c failed%d.", retry);
 	}
@@ -489,7 +489,7 @@ s32 gt1x_i2c_read_dbl_check(u16 addr, u8 *buffer, s32 len)
 		return ret;
 	}
 
-	msleep(5);
+	usleep_range(5000, 6000);
 	memset(confirm_buf, 0, sizeof(confirm_buf));
 	ret = gt1x_i2c_read(addr, confirm_buf, len);
 	if (ret < 0) {
@@ -660,9 +660,9 @@ void gt1x_select_addr(void)
 {
 	GTP_GPIO_OUTPUT(GTP_RST_PORT, 0);
 	GTP_GPIO_OUTPUT(GTP_INT_PORT, gt1x_i2c_client->addr == 0x14);
-	msleep(2);
+	usleep_range(2000, 3000);
 	GTP_GPIO_OUTPUT(GTP_RST_PORT, 1);
-	msleep(2);
+	usleep_range(2000, 3000);
 }
 
 static s32 gt1x_set_reset_status(void)
@@ -786,7 +786,7 @@ s32 gt1x_reset_guitar(void)
 		return ret;
 #else
 	gt1x_select_addr();
-	msleep(8);     /* must >= 6ms */
+	usleep_range(8000, 9000);     /* must >= 6ms */
 #endif
 
 	/* int synchronization */
@@ -920,14 +920,14 @@ static s32 gt1x_enter_sleep(void)
 		if (gt1x_wakeup_level == 1) {	/* high level wakeup */
 			GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
 		}
-		msleep(5);
+		usleep_range(5000, 6000);
 
 		while (retry++ < 3) {
 			if (!gt1x_send_cmd(GTP_CMD_SLEEP, 0)) {
 				GTP_INFO("Enter sleep mode!");
 				return 0;
 			}
-			msleep(10);
+			usleep_range(10000, 11000);
 		}
 
 		GTP_ERROR("Enter sleep mode failed.");
@@ -970,7 +970,7 @@ static s32 gt1x_wakeup_sleep(void)
 		{
 			/* wake up through int port */
 			GTP_GPIO_OUTPUT(GTP_INT_PORT, gt1x_wakeup_level);
-			msleep(5);
+			usleep_range(5000, 6000);
 
 			/* Synchronize int IO */
 			GTP_GPIO_OUTPUT(GTP_INT_PORT, 0);
diff --git a/drivers/input/touchscreen/gt1x/gt1x_update.c b/drivers/input/touchscreen/gt1x/gt1x_update.c
index 50ba3c208cdc..295462a80a20 100644
--- a/drivers/input/touchscreen/gt1x/gt1x_update.c
+++ b/drivers/input/touchscreen/gt1x/gt1x_update.c
@@ -1026,7 +1026,7 @@ int gt1x_burn_subsystem(struct fw_subsystem_info *subsystem)
 		}
 		burn_state = ERROR;
 		wait_time = 200;
-		msleep(5);
+		usleep_range(5000, 6000);
 
 		while (wait_time-- > 0) {
 			u8 confirm = 0x55;
@@ -1035,7 +1035,7 @@ int gt1x_burn_subsystem(struct fw_subsystem_info *subsystem)
 			if (ret < 0) {
 				continue;
 			}
-			msleep(5);
+			usleep_range(5000, 6000);
 			ret = gt1x_i2c_read(0x8022, &confirm, 1);
 			if (ret < 0) {
 				continue;
@@ -1148,7 +1148,7 @@ int gt1x_read_flash(u32 addr, int length)
 	wait_time = 200;
 	while (wait_time > 0) {
 		wait_time--;
-		msleep(5);
+		usleep_range(5000, 6000);
 		ret = gt1x_i2c_read_dbl_check(0x8022, buffer, 1);
 		if (ret) {
 			continue;
@@ -1257,7 +1257,7 @@ int gt1x_error_erase(void)
 	    wait_time = 200;
 	    while (wait_time > 0) {
 		    wait_time--;
-		    msleep(5);
+		    usleep_range(5000, 6000);
 		    ret = gt1x_i2c_read_dbl_check(0x8022, buffer, 1);
 		    if (ret)
 			    continue;