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| author | Michael Hennerich <michael.hennerich@analog.com> | 2011-08-22 09:45:42 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-08-22 09:59:26 -0700 |
| commit | 9eff794b777ac9ca034129a1b637204000c8fb29 (patch) | |
| tree | 5f833d94eb3b3a084e5083b89bdc8728447f1665 /drivers/input/misc/ad714x.h | |
| parent | c0409feb86893f5ccf73964c7b2b47ca64bdb014 (diff) | |
| download | linux-stable-9eff794b777ac9ca034129a1b637204000c8fb29.tar.gz linux-stable-9eff794b777ac9ca034129a1b637204000c8fb29.tar.bz2 linux-stable-9eff794b777ac9ca034129a1b637204000c8fb29.zip | |
Input: ad714x - read the interrupt status registers in a row
The interrupt status registers should be read in row to avoid invalid data.
Alter "read" method for both bus options to allow reading several registers
in a row and make sure we read interrupt status registers properly.
Read sequence saves 50% of bus transactions compared to single register
reads. So use it also for the result registers, which are also located
in a row.
Also update copyright notice.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/misc/ad714x.h')
| -rw-r--r-- | drivers/input/misc/ad714x.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/input/misc/ad714x.h b/drivers/input/misc/ad714x.h index d12d14911fc3..3c85455aa66d 100644 --- a/drivers/input/misc/ad714x.h +++ b/drivers/input/misc/ad714x.h @@ -1,7 +1,7 @@ /* * AD714X CapTouch Programmable Controller driver (bus interfaces) * - * Copyright 2009 Analog Devices Inc. + * Copyright 2009-2011 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ @@ -18,12 +18,12 @@ struct ad714x_platform_data; struct ad714x_driver_data; struct ad714x_chip; -typedef int (*ad714x_read_t)(struct ad714x_chip *, unsigned short, unsigned short *); +typedef int (*ad714x_read_t)(struct ad714x_chip *, unsigned short, unsigned short *, size_t); typedef int (*ad714x_write_t)(struct ad714x_chip *, unsigned short, unsigned short); struct ad714x_chip { - unsigned short h_state; unsigned short l_state; + unsigned short h_state; unsigned short c_state; unsigned short adc_reg[STAGE_NUM]; unsigned short amb_reg[STAGE_NUM]; |