input: TSC: ti_tscadc: set FIFO0 threshold Interrupt

Code currently uses FIFO1 threshold interrupt.
since this is a MFD, Dedicating FIFO0 to touchscreen
and making way for other devices to use FIFO1 as well.
The FIFO can be shared between 2 devices but since the
interrupt used is threshold interrupt on FIFO1, we would
end up having wrong interrupts. Hence changing the same.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/input/touchscreen/ti_tscadc.c b/drivers/input/touchscreen/ti_tscadc.c
index c1bd8e5c132..2cc19b09e31 100644
--- a/drivers/input/touchscreen/ti_tscadc.c
+++ b/drivers/input/touchscreen/ti_tscadc.c
@@ -42,6 +42,7 @@
 #define REG_STEPCONFIG(n)       (0x64 + ((n - 1) * 8))
 #define REG_STEPDELAY(n)        (0x68 + ((n - 1) * 8))
 #define REG_FIFO0CNT            0xE4
+#define REG_FIFO0THR            0xE8
 #define REG_FIFO1THR            0xF4
 #define REG_FIFO0               0x100
 #define REG_FIFO1               0x200
@@ -55,6 +56,7 @@
 #define STPENB_STEPENB          STEPENB(0x7FFF)
 
 /* IRQ enable */
+#define IRQENB_FIFO0THRES       BIT(2)
 #define IRQENB_FIFO1THRES       BIT(5)
 #define IRQENB_PENUP            BIT(9)
 
@@ -277,7 +279,7 @@ static irqreturn_t tscadc_irq(int irq, void *dev)
         unsigned int fsm;
 
         status = tscadc_readl(ts_dev, REG_IRQSTATUS);
-        if (status & IRQENB_FIFO1THRES) {
+        if (status & IRQENB_FIFO0THRES) {
                 tscadc_read_coordinates(ts_dev, &x, &y);
 
                 z1 = tscadc_readl(ts_dev, REG_FIFO0) & 0xfff;
@@ -303,7 +305,7 @@ static irqreturn_t tscadc_irq(int irq, void *dev)
                                 input_sync(input_dev);
                         }
                 }
-                irqclr |= IRQENB_FIFO1THRES;
+                irqclr |= IRQENB_FIFO0THRES;
         }
 
         /*
@@ -446,9 +448,9 @@ static int __devinit tscadc_probe(struct platform_device *pdev)
         tscadc_writel(ts_dev, REG_CTRL, ctrl);
 
         tscadc_idle_config(ts_dev);
-        tscadc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO1THRES);
+        tscadc_writel(ts_dev, REG_IRQENABLE, IRQENB_FIFO0THRES);
         tscadc_step_config(ts_dev);
-        tscadc_writel(ts_dev, REG_FIFO1THR, ts_dev->steps_to_configure);
+        tscadc_writel(ts_dev, REG_FIFO0THR, ts_dev->steps_to_configure);
 
         ctrl |= CNTRLREG_TSCSSENB;
         tscadc_writel(ts_dev, REG_CTRL, ctrl);