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| author | Janusz Krzysztofik | 2018-09-05 23:50:08 +0200 |
|---|---|---|
| committer | Linus Walleij | 2018-09-13 11:17:23 +0200 |
| commit | b17566a6b08be18ded5472a2e4bbc066593b3662 (patch) | |
| tree | 855c1933616c99b7b7998be6e5e5a88dc490d5a4 /include/linux/gpio | |
| parent | gpiolib: Pass array info to get/set array functions (diff) | |
| download | kernel-qcow2-linux-b17566a6b08be18ded5472a2e4bbc066593b3662.tar.gz kernel-qcow2-linux-b17566a6b08be18ded5472a2e4bbc066593b3662.tar.xz kernel-qcow2-linux-b17566a6b08be18ded5472a2e4bbc066593b3662.zip | |
gpiolib: Implement fast processing path in get/set array
Certain GPIO descriptor arrays returned by gpio_get_array() may contain
information on direct mapping of array members to pins of a single GPIO
chip in hardware order. In such cases, bitmaps of values can be passed
directly from/to the chip's .get/set_multiple() callbacks without
wasting time on iterations.
Add respective code to gpiod_get/set_array_bitmap_complex() functions.
Pins not applicable for fast path are processed as before, skipping
over the 'fast' ones.
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/gpio')
0 files changed, 0 insertions, 0 deletions