diff options
| author |   Shubhrajyoti D <shubhrajyoti@ti.com> | 2011-12-06 10:25:58 -0800 |
|---|---|---|
| committer |   Ben Dooks <ben-linux@fluff.org> | 2011-12-18 11:45:54 +0000 |
| commit | 1d5a34fe990c9e2e2f672b238ad881d0d4ed376b (patch) | |
| tree | 0ae93af40bfcd20213e3ac91a498f6f427c75676 /drivers/i2c | |
| parent | i2c-s3c2410: Fix return code of s3c24xx_i2c_parse_dt_gpio (diff) | |
| download | linux-dev-1d5a34fe990c9e2e2f672b238ad881d0d4ed376b.tar.xz linux-dev-1d5a34fe990c9e2e2f672b238ad881d0d4ed376b.zip | |
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>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-omap.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index a43d0023446a..fa23faa20f0e 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -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) / |