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I2C: OMAP: fix FIFO usage for OMAP4 

Currently the fifo depth is set to zero for OMAP4 which disables
the FIFO usage. This patch enables the FIFO usage for I2C transactions
on OMAP4 also.

Tested on omap4430 and 3430.

Tested-and-Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Shubhrajyoti D 2011-12-06 10:25:58 -08:00 committed by Ben Dooks
parent 8ebe661dd2
commit 1d5a34fe99
1 changed files with 6 additions and 5 deletions
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11
drivers/i2c/busses/i2c-omap.c
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@ -1047,13 +1047,14 @@ omap_i2c_probe(struct platform_device *pdev)
* size. This is to ensure that we can handle the status on int
* call back latencies.
*/
if (dev->rev >= OMAP_I2C_REV_ON_3530_4430) {
dev->fifo_size = 0;
dev->fifo_size = (dev->fifo_size / 2);
if (dev->rev >= OMAP_I2C_REV_ON_3530_4430)
dev->b_hw = 0; /* Disable hardware fixes */
} else {
dev->fifo_size = (dev->fifo_size / 2);
else
dev->b_hw = 1; /* Enable hardware fixes */
}
/* calculate wakeup latency constraint for MPU */
if (dev->set_mpu_wkup_lat != NULL)
dev->latency = (1000000 * dev->fifo_size) /