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Andreas Schallenberg committed ae79c19049b
Add support for TCA6424A 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>