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| 2 | |
| 3 | * Shared library for Kinetic's ExpressWire protocol.
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| 4 | * This protocol works by pulsing the ExpressWire IC's control GPIO.
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| 5 | * ktd2692 and ktd2801 are known to use this protocol.
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| 6 |
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| 7 |
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| 8 | #ifndef _LEDS_EXPRESSWIRE_H
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| 9 | #define _LEDS_EXPRESSWIRE_H
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| 10 |
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| 11 | #include <linux/types.h>
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| 12 |
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| 13 | struct gpio_desc;
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| 14 |
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| 15 | struct expresswire_timing {
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| 16 | unsigned long poweroff_us;
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| 17 | unsigned long detect_delay_us;
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| 18 | unsigned long detect_us;
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| 19 | unsigned long data_start_us;
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| 20 | unsigned long end_of_data_low_us;
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| 21 | unsigned long end_of_data_high_us;
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| 22 | unsigned long short_bitset_us;
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| 23 | unsigned long long_bitset_us;
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| 24 | };
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| 25 |
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| 26 | struct expresswire_common_props {
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| 27 | struct gpio_desc *ctrl_gpio;
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| 28 | struct expresswire_timing timing;
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| 29 | };
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| 30 |
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| 31 | void expresswire_power_off(struct expresswire_common_props *props);
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| 32 | void expresswire_enable(struct expresswire_common_props *props);
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| 33 | void expresswire_write_u8(struct expresswire_common_props *props, u8 val);
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| 34 |
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| 35 | #endif
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