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author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-28 09:30:21 -0700 |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2016-09-28 09:30:21 -0700 |
commit | ac2a8bca03a6d281c78e803899001e22a92b92e9 (patch) | |
tree | 5969d5e812165a2b113601109833e8bd2e662d71 /include/linux/platform_data | |
parent | a6a1cf3d963daaf80e467793060be1fa57599a4b (diff) | |
parent | 3c6e8d05d60d8106b5cdc730cf220b2a4b521b66 (diff) | |
download | linux-0-day-ac2a8bca03a6d281c78e803899001e22a92b92e9.tar.gz linux-0-day-ac2a8bca03a6d281c78e803899001e22a92b92e9.tar.xz |
Merge branch 'ib-move-htc-egpio' into devel
Diffstat (limited to 'include/linux/platform_data')
-rw-r--r-- | include/linux/platform_data/gpio-htc-egpio.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/platform_data/gpio-htc-egpio.h b/include/linux/platform_data/gpio-htc-egpio.h new file mode 100644 index 0000000000000..b4201c971367c --- /dev/null +++ b/include/linux/platform_data/gpio-htc-egpio.h @@ -0,0 +1,57 @@ +/* + * HTC simple EGPIO irq and gpio extender + */ + +#ifndef __HTC_EGPIO_H__ +#define __HTC_EGPIO_H__ + +#include <linux/gpio.h> + +/* Descriptive values for all-in or all-out htc_egpio_chip descriptors. */ +#define HTC_EGPIO_OUTPUT (~0) +#define HTC_EGPIO_INPUT 0 + +/** + * struct htc_egpio_chip - descriptor to create gpio_chip for register range + * @reg_start: index of first register + * @gpio_base: gpio number of first pin in this register range + * @num_gpios: number of gpios in this register range, max BITS_PER_LONG + * (number of registers = DIV_ROUND_UP(num_gpios, reg_width)) + * @direction: bitfield, '0' = input, '1' = output, + */ +struct htc_egpio_chip { + int reg_start; + int gpio_base; + int num_gpios; + unsigned long direction; + unsigned long initial_values; +}; + +/** + * struct htc_egpio_platform_data - description provided by the arch + * @irq_base: beginning of available IRQs (eg, IRQ_BOARD_START) + * @num_irqs: number of irqs + * @reg_width: number of bits per register, either 8 or 16 bit + * @bus_width: alignment of the registers, either 16 or 32 bit + * @invert_acks: set if chip requires writing '0' to ack an irq, instead of '1' + * @ack_register: location of the irq/ack register + * @chip: pointer to array of htc_egpio_chip descriptors + * @num_chips: number of egpio chip descriptors + */ +struct htc_egpio_platform_data { + int bus_width; + int reg_width; + + int irq_base; + int num_irqs; + int invert_acks; + int ack_register; + + struct htc_egpio_chip *chip; + int num_chips; +}; + +/* Determine the wakeup irq, to be called during early resume */ +extern int htc_egpio_get_wakeup_irq(struct device *dev); + +#endif |