x1000: fix broken OST2 timer prescaler

It turns out the prescaler fields in OST_CTRL are 2 bits wide,
not 3. The programming manual (as usual) is ambiguous and its
diagram shows 2-bit wide fields, but the bit positions in the
text give a 3-bit wide field. Ingenic's Linux code and my own
testing shows that they are, in fact, 2 bits wide.

This caused the OST2 divisor to be 16 instead of 4; the OST1
divisor was correct. This means that all udelay/mdelay calls
took 4x longer than they should've. After this change the OST2
prescaler will be 4, as intended, and udelay/mdelay calls will
wait for the intended duration.

Change-Id: I2ac0a9190f49b59a840c649bf586131f5f9fde82

1 files changed, 2 insertions, 2 deletions

diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/button-fiiom3k.c b/firmware/target/mips/ingenic_x1000/fiiom3k/button-fiiom3k.c
index 4354257f7b..04e3102d42 100644
--- a/firmware/target/mips/ingenic_x1000/fiiom3k/button-fiiom3k.c
+++ b/firmware/target/mips/ingenic_x1000/fiiom3k/button-fiiom3k.c
@@ -45,11 +45,11 @@
 #define STATE_SCROLLING     4
 
 /* Assume there's no active touch if no event is reported in this time */
-#define AUTORELEASE_TIME    (10000 * OST_TICKS_PER_US)
+#define AUTORELEASE_TIME    (40 * 1000 * OST_TICKS_PER_US)
 
 /* If there's no significant motion on the scrollbar for this time,
  * then report it as a button press instead */
-#define SCROLL_PRESS_TIME   (100000 * OST_TICKS_PER_US)
+#define SCROLL_PRESS_TIME   (400 * 1000 * OST_TICKS_PER_US)
 
 /* If a press on the scrollbar moves more than this during SCROLL_PRESS_TIME,
  * then we enter scrolling mode. */