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ce9bd0a0ff
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
21 lines
729 B
C
21 lines
729 B
C
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/* FIXME driver should be able to handle IRQs... */
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struct mcp23s08_platform_data {
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/* For mcp23s08, up to 4 slaves (numbered 0..3) can share one SPI
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* chipselect, each providing 1 gpio_chip instance with 8 gpios.
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* For mpc23s17, up to 8 slaves (numbered 0..7) can share one SPI
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* chipselect, each providing 1 gpio_chip (port A + port B) with
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* 16 gpios.
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*/
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u32 spi_present_mask;
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/* "base" is the number of the first GPIO. Dynamic assignment is
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* not currently supported, and even if there are gaps in chip
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* addressing the GPIO numbers are sequential .. so for example
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* if only slaves 0 and 3 are present, their GPIOs range from
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* base to base+15 (or base+31 for s17 variant).
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*/
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unsigned base;
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};
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