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| author | Nick Dyer <nick.dyer@itdev.co.uk> | 2014-05-18 23:04:46 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-05-18 23:27:26 -0700 |
| commit | c3f78043d5aea39205a14c580babd87fbdcfa148 (patch) | |
| tree | a04d28b1eae6a4da2d528c9f9e2f343e88ba88f9 /include/linux/i2c | |
| parent | 7bed6805615a215c3e23d5819ec3003b2fd8b98c (diff) | |
| download | linux-c3f78043d5aea39205a14c580babd87fbdcfa148.tar.gz linux-c3f78043d5aea39205a14c580babd87fbdcfa148.tar.bz2 linux-c3f78043d5aea39205a14c580babd87fbdcfa148.zip | |
Input: atmel_mxt_ts - implement CRC check for configuration data
The configuration is stored in NVRAM on the maXTouch chip. When the device
is reset it reports a CRC of the stored configuration values. Therefore it
isn't necessary to send the configuration on each probe - we can check the
CRC matches and avoid a timeconsuming backup/reset cycle.
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Acked-by: Benson Leung <bleung@chromium.org>
Acked-by: Yufeng Shen <miletus@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'include/linux/i2c')
| -rw-r--r-- | include/linux/i2c/atmel_mxt_ts.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index d26080dc606c..9f92135b6620 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -29,6 +29,7 @@ struct mxt_platform_data { const u8 *config; size_t config_length; + u32 config_crc; unsigned int x_size; unsigned int y_size; |