diff options
| author | Jin Park <jinyoungp@nvidia.com> | 2011-01-19 14:41:42 +0900 |
|---|---|---|
| committer | Niket Sirsi <nsirsi@nvidia.com> | 2011-01-28 19:36:49 -0800 |
| commit | 6bab778a4b0caf58e464847c827d988a566bd434 (patch) | |
| tree | 1cb945fbcf00f89cada57f0fa618399a12f1009f /include | |
| parent | 8197cb15eaf0640d13c816926f65972ca6cbba84 (diff) | |
i2c-tegra: Retry transfer when unexpected status is detected
Sometimes unexpected status like I2C busy status, Tx FIFO interrupted
and wait on Rx data etc is seen. Add a code to detect such conditions
and return -EAGAIN from driver. This will cause the i2c-core to retry
the transmission as per the retry count and time-out specified by the
platform data of the adapter.
Bug ID: 777455
Change-Id: Iac5971bca4d760d93cd2ed147f78fc2807315b4e
Signed-off-by: Jin Park <jinyoungp@nvidia.com>
Reviewed-on: http://git-master/r/16212
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c-tegra.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/i2c-tegra.h b/include/linux/i2c-tegra.h index 6123502b8ddd..f92fe26c7535 100644 --- a/include/linux/i2c-tegra.h +++ b/include/linux/i2c-tegra.h @@ -29,6 +29,8 @@ struct tegra_i2c_platform_data { int bus_mux_len[TEGRA_I2C_MAX_BUS]; unsigned long bus_clk_rate[TEGRA_I2C_MAX_BUS]; bool is_dvc; + int retries; + int timeout; /* in jiffies */ }; #endif /* _LINUX_I2C_TEGRA_H */ |