From: 沈睿汀 <srt@rock-chips.com>
Date: Thu, 3 Jun 2010 02:34:04 +0000 (+0000)
Subject: update for xpt2046
X-Git-Tag: firefly_0821_release~11423
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d9c863aae31977ab9a3bf2098b158c43526186da;p=firefly-linux-kernel-4.4.55.git

update for xpt2046
---

diff --git a/arch/arm/mach-rk2818/board-midsdk.c b/arch/arm/mach-rk2818/board-midsdk.c
index d33e7f2a9c72..2ea8b427e34a 100644
--- a/arch/arm/mach-rk2818/board-midsdk.c
+++ b/arch/arm/mach-rk2818/board-midsdk.c
@@ -361,7 +361,7 @@ static struct spi_board_info board_spi_devices[] = {
 	{
 		.modalias	= "xpt2046_ts",
 		.chip_select	= 0,
-		.max_speed_hz	= 1000000,/* (max sample rate @ 3V) * (cmd + data + overhead) */
+		.max_speed_hz	= 125 * 1000 * 26,/* (max sample rate @ 3V) * (cmd + data + overhead) */
 		.bus_num	= 0,
 		.irq		= RK2818_PIN_PE3,
 	},
diff --git a/drivers/input/touchscreen/xpt2046_ts.c b/drivers/input/touchscreen/xpt2046_ts.c
index 5af31de69cf5..4af936103a6a 100644
--- a/drivers/input/touchscreen/xpt2046_ts.c
+++ b/drivers/input/touchscreen/xpt2046_ts.c
@@ -61,8 +61,8 @@
 #define AD_TO_X(adx)	(LCD_MAX_WIDTH * (adx - PT2046_TOUCH_AD_TOP) / ( PT2046_TOUCH_AD_BOTTOM  - PT2046_TOUCH_AD_TOP ))
 #define AD_TO_Y(ady)	(LCD_MAX_LENGTH * (PT2046_TOUCH_AD_LEFT - ady) / (PT2046_TOUCH_AD_LEFT - PT2046_TOUCH_AD_RIGHT))
 
-#define TS_POLL_DELAY	(1 * 1000000)	/* ns delay before the first sample */
-#define TS_POLL_PERIOD	(5 * 1000000)	/* ns delay between samples */
+#define TS_POLL_DELAY	(3 * 1000000)	/* ns delay before the first sample */
+#define TS_POLL_PERIOD	(15 * 1000000)	/* ns delay between samples */
 
 #define DEBOUNCE_REPTIME  3
 /* this driver doesn't aim at the peak continuous sample rate */