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| author | Steve Sakoman <steve@sakoman.com> | 2010-10-20 06:07:44 -0700 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2010-10-20 15:28:33 +0200 |
| commit | 73e8747fe48c54dda16670421dbc370b5b2a4a52 (patch) | |
| tree | acea10e78550249ac3498d9c1b5756ffe11fed87 /drivers | |
| parent | 11c8dd36edcc82564a19dbd0103302df66d66db0 (diff) | |
| download | u-boot-imx-73e8747fe48c54dda16670421dbc370b5b2a4a52.zip u-boot-imx-73e8747fe48c54dda16670421dbc370b5b2a4a52.tar.gz u-boot-imx-73e8747fe48c54dda16670421dbc370b5b2a4a52.tar.bz2 | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/omap24xx_i2c.c | 14 |
1 files changed, 8 insertions, 6 deletions
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 @@ int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len) 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 void wait_for_bb (void) static u16 wait_for_pin (void) { u16 status; - int timeout = 10; + int timeout = I2C_TIMEOUT; do { udelay (1000); @@ -424,8 +424,10 @@ static u16 wait_for_pin (void) 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; } |