Ken Van Hoeylandt
47 lines
2.1 KiB
C
47 lines
2.1 KiB
C
#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include <stdbool.h>
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#include <tactility/device.h>
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#include <tactility/drivers/gpio.h>
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struct Tab5KeyboardConfig {
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// Fixed 0x6D on this keyboard accessory - kept as a field for parity/documentation with
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// other dynamically-constructed devices in this project, not used to probe the bus.
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uint8_t address;
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// Native SoC GPIO (e.g. gpio0 pin 50) wired directly to the keyboard's INT line - not routed
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// through an IO expander, since it needs a real hardware ISR for responsive key events.
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// GPIO_PIN_SPEC_NONE falls back to polling REG_INT_STAT instead.
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struct GpioPinSpec pin_interrupt;
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};
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// Called when the keyboard accessory's hot-plug attach state changes (confirmed over two
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// consecutive ~1s checks - see the driver source). Orientation changes and other LVGL-aware
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// reactions to attach state live outside the driver (it has no LVGL dependency) - module.cpp
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// registers a listener for this instead.
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// @return true once handled; false to be called again on the next confirmed check with the same
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// `attached` value (e.g. if the LVGL lock couldn't be acquired) - mirrors this driver's own
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// internal retry-until-handled pattern for reinitializing the device on reattach.
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typedef bool (*Tab5KeyboardAttachListener)(struct Device* device, bool attached, void* context);
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// Only one listener is supported (this board only ever has one caller - module.cpp). Registering
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// a new one before removing the previous replaces it with a warning logged.
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void tab5_keyboard_add_attach_listener(struct Device* device, Tab5KeyboardAttachListener callback, void* context);
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void tab5_keyboard_remove_attach_listener(struct Device* device, Tab5KeyboardAttachListener callback);
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extern struct Driver tab5_keyboard_driver;
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// Constructs and starts the keyboard accessory device on i2c2, then registers this project's own
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// hot-plug rotation handler as its attach listener. Called from display_detect.cpp's
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// on_display_detect_event() once i2c2 is up.
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void tab5_create_keyboard(struct Device* i2c2);
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#ifdef __cplusplus
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}
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#endif
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