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authorLen Brown <len.brown@intel.com>2011-03-23 02:34:54 -0400
committerLen Brown <len.brown@intel.com>2011-03-23 02:34:54 -0400
commit02e2407858fd62053bf60349c0e72cd1c7a4a60e (patch)
tree0ebdbddc97d3abbc675916010e7771065b70c137 /include/linux/spi/mcp23s08.h
parent96e1c408ea8a556c5b51e0e7d56bd2afbfbf5fe9 (diff)
parent6447f55da90b77faec1697d499ed7986bb4f6de6 (diff)
Merge branch 'linus' into release
Conflicts: arch/x86/kernel/acpi/sleep.c Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/linux/spi/mcp23s08.h')
-rw-r--r--include/linux/spi/mcp23s08.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/include/linux/spi/mcp23s08.h b/include/linux/spi/mcp23s08.h
index 22ef107d770..c42cff8ca19 100644
--- a/include/linux/spi/mcp23s08.h
+++ b/include/linux/spi/mcp23s08.h
@@ -2,21 +2,24 @@
/* FIXME driver should be able to handle IRQs... */
struct mcp23s08_chip_info {
- bool is_present; /* true iff populated */
- u8 pullups; /* BIT(x) means enable pullup x */
+ bool is_present; /* true if populated */
+ unsigned pullups; /* BIT(x) means enable pullup x */
};
struct mcp23s08_platform_data {
- /* Four slaves (numbered 0..3) can share one SPI chipselect, and
- * will provide 8..32 GPIOs using 1..4 gpio_chip instances.
+ /* For mcp23s08, up to 4 slaves (numbered 0..3) can share one SPI
+ * chipselect, each providing 1 gpio_chip instance with 8 gpios.
+ * For mpc23s17, up to 8 slaves (numbered 0..7) can share one SPI
+ * chipselect, each providing 1 gpio_chip (port A + port B) with
+ * 16 gpios.
*/
- struct mcp23s08_chip_info chip[4];
+ struct mcp23s08_chip_info chip[8];
/* "base" is the number of the first GPIO. Dynamic assignment is
* not currently supported, and even if there are gaps in chip
* addressing the GPIO numbers are sequential .. so for example
* if only slaves 0 and 3 are present, their GPIOs range from
- * base to base+15.
+ * base to base+15 (or base+31 for s17 variant).
*/
unsigned base;