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2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
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/* FIXME driver should be able to handle IRQs... */
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struct mcp23s08_chip_info {
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bool is_present; /* true if populated */
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unsigned pullups; /* BIT(x) means enable pullup x */
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};
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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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struct mcp23s08_chip_info chip[8];
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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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/* Marks the device as a interrupt controller.
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* NOTE: The interrupt functionality is only supported for i2c
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* versions of the chips. The spi chips can also do the interrupts,
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* but this is not supported by the linux driver yet.
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*/
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bool irq_controller;
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/* Sets the mirror flag in the IOCON register. Devices
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* with two interrupt outputs (these are the devices ending with 17 and
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* those that have 16 IOs) have two IO banks: IO 0-7 form bank 1 and
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* IO 8-15 are bank 2. These chips have two different interrupt outputs:
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* One for bank 1 and another for bank 2. If irq-mirror is set, both
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* interrupts are generated regardless of the bank that an input change
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* occurred on. If it is not set, the interrupt are only generated for
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* the bank they belong to.
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* On devices with only one interrupt output this property is useless.
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*/
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bool mirror;
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};
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