1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/input/touchscreen/ucb1400_ts.c b/drivers/input/touchscreen/ucb1400_ts.c
index 5200f4cbfe01..24000f0efeaa 100644
--- a/drivers/input/touchscreen/ucb1400_ts.c
+++ b/drivers/input/touchscreen/ucb1400_ts.c
@@ -97,6 +97,8 @@ struct ucb1400 {
 };
 
 static int adcsync;
+static int ts_delay = 55; /* us */
+static int ts_delay_pressure;   /* us */
 
 static inline u16 ucb1400_reg_read(struct ucb1400 *ucb, u16 reg)
 {
@@ -159,6 +161,7 @@ static inline unsigned int ucb1400_ts_read_pressure(struct ucb1400 *ucb)
                         UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
                         UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
                         UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+        udelay(ts_delay_pressure);
         return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY);
 }
 
@@ -180,7 +183,7 @@ static inline unsigned int ucb1400_ts_read_xpos(struct ucb1400 *ucb)
                         UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
                         UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
 
-        udelay(55);
+        udelay(ts_delay);
 
         return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPY);
 }
@@ -203,7 +206,7 @@ static inline unsigned int ucb1400_ts_read_ypos(struct ucb1400 *ucb)
                         UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
                         UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
 
-        udelay(55);
+        udelay(ts_delay);
 
         return ucb1400_adc_read(ucb, UCB_ADC_INP_TSPX);
 }
@@ -571,7 +574,15 @@ static void __exit ucb1400_ts_exit(void)
         driver_unregister(&ucb1400_ts_driver);
 }
 
-module_param(adcsync, int, 0444);
+module_param(adcsync, bool, 0444);
+MODULE_PARM_DESC(adcsync, "Synchronize touch readings with ADCSYNC pin.");
+
+module_param(ts_delay, int, 0444);
+MODULE_PARM_DESC(ts_delay, "Delay between panel setup and position read. Default = 55us.");
+
+module_param(ts_delay_pressure, int, 0444);
+MODULE_PARM_DESC(ts_delay_pressure,
+                  "delay between panel setup and pressure read.  Default = 0us.");
 
 module_init(ucb1400_ts_init);
 module_exit(ucb1400_ts_exit);