Add support for TCA6424A

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This patch extends the PCA953x driver to support TI's TCA6424A 24 bit I2C I/O expander. The patch is based on code by Michele
Bevilacqua.

Changes in v2:
- Compare ngpio against 24 in both places, not >16
- Larger datatype now u32 instead of uint.
  Bit fields not used for struct members since their address is taken.
- Be precise: TCA6424A (untested for older TCA6424)

Signed-off-by: Andreas Schallenberg<Andreas.Schallenberg@3alitytechnica.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

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Andreas Schallenberg 2012-05-09 09:46:17 +02:00 • committed by Grant Likely

parent 453007cf47

commit ae79c19049

1 changed files with 30 additions and 13 deletions

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43

drivers/gpio/gpio-pca953x.c

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