ARMV7: OMAP: I2C driver: Use same timeout value as linux kernel driver
This patch matches the poll interval (1 millisecond) and timeout (1 second)
used in the linux driver. It also adds a return value of 0 in the event of
a timeout error and cleans up some formatting errors in that section of the
code.
Signed-off-by: Steve Sakoman <steve.sakoman@linaro.org>
Tested-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 3febd1f..b69d051 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -27,7 +27,7 @@
#include "omap24xx_i2c.h"
-#define I2C_TIMEOUT 10
+#define I2C_TIMEOUT 1000
static void wait_for_bb (void);
static u16 wait_for_pin (void);
@@ -392,13 +392,13 @@
static void wait_for_bb (void)
{
- int timeout = 10;
+ int timeout = I2C_TIMEOUT;
u16 stat;
writew(0xFFFF, &i2c_base->stat); /* clear current interruts...*/
while ((stat = readw (&i2c_base->stat) & I2C_STAT_BB) && timeout--) {
writew (stat, &i2c_base->stat);
- udelay (50000);
+ udelay(1000);
}
if (timeout <= 0) {
@@ -411,7 +411,7 @@
static u16 wait_for_pin (void)
{
u16 status;
- int timeout = 10;
+ int timeout = I2C_TIMEOUT;
do {
udelay (1000);
@@ -424,8 +424,10 @@
if (timeout <= 0) {
printf ("timed out in wait_for_pin: I2C_STAT=%x\n",
readw (&i2c_base->stat));
- writew(0xFFFF, &i2c_base->stat);
-}
+ writew(0xFFFF, &i2c_base->stat);
+ status = 0;
+ }
+
return status;
}