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view src/cs/drivers/drv_app/r2d/r2d_blrr_api.h @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 6541e43f88e5
children
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/*
 * This header file is a FreeCalypso addition to R2D.  It defines
 * the API for turning BLRR (backlight required for readability)
 * displays on and off, and for communicating different display modes
 * which may translate to different display brightness levels
 * (different backlight intensity levels) on some hw targets.
 */

#ifndef	__R2D_BLRR_API_H
#define	__R2D_BLRR_API_H

#include "rv/rv_general.h"

enum blrr_display_state {
	BLRR_DISPLAY_OFF = 0,
	BLRR_DISPLAY_ON,
	BLRR_DISPLAY_INCALL,
	BLRR_DISPLAY_CHG_BOOT
};

extern T_RV_RET blrr_display_ctrl(enum blrr_display_state);

#endif	/* include guard */