This patchset cleans up the atmel_mxt_ts touchscreen driver.
In particular, v3 implements the following:
1) sysfs
a) fw_update only by root
b) use sncprintf()
2) faster initialization
a) read/write sets of registers using i2c block transactions
b) fetch object descriptor table as a single i2c transaction
c) fetch objects as a set of i2c reads, one per object
d) write config data as a set of i2c writes, one per object
3) faster interrupt processing & initialization times
a) cache important values at init instead of computing in isr
b) don't read message checksum byte (which isn't even enabled in fw)
4) more correct MT-B support
a) send all (changed) contacts in a single EV_SYN/SYN_REPORT
v3:
* Address Henrik's feedback:
1) removed some more stack allocations
2) use sncprintf() in sysfs handler
The patches were tested using an MXT224E.
They should apply cleanly to input/next.
Daniel Kurtz (14):
Input: atmel_mxt_ts - use CONFIG_PM_SLEEP
Input: atmel_mxt_ts - only allow root to update firmware
Input: atmel_mxt_ts - refactor mxt_read/write_reg to take a length
Input: atmel_mxt_ts - verify object size in mxt_write_object
Input: atmel_mxt_ts - do not read extra (checksum) byte
Input: atmel_mxt_ts - dump each message on just 1 line
Input: atmel_mxt_ts - refactor mxt_object_show
Input: atmel_mxt_ts - optimize writing of object table entries
Input: atmel_mxt_ts - refactor get info
Input: atmel_mxt_ts - simplify event reporting
Input: atmel_mxt_ts - cache T9 reportid range when reading object
table
Input: atmel_mxt_ts - parse vector field of data packets
Input: atmel_mxt_ts - send all MT-B slots in one input report
Input: atmel_mxt_ts - parse T6 reports
drivers/input/touchscreen/atmel_mxt_ts.c | 530 ++++++++++++------------------
1 files changed, 218 insertions(+), 312 deletions(-)
--
1.7.7.3
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