ef475cbf71
This commit adds the pfic interrupt controller driver for WCH CH32V003. Signed-off-by: Michael Hope <michaelh@juju.nz> Signed-off-by: Dhiru Kholia <dhiru.kholia@gmail.com>
43 lines
845 B
C
43 lines
845 B
C
/*
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* Copyright (c) 2024 Michael Hope
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT wch_pfic
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#include <ch32fun.h>
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#include <zephyr/arch/cpu.h>
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#include <zephyr/init.h>
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#include <zephyr/irq.h>
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#include <zephyr/kernel.h>
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#define SEVONPEND (1 << 4)
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#define WFITOWFE (1 << 3)
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void arch_irq_enable(unsigned int irq)
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{
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PFIC->IENR[irq / 32] = 1 << (irq % 32);
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}
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void arch_irq_disable(unsigned int irq)
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{
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PFIC->IRER[irq / 32] |= 1 << (irq % 32);
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}
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int arch_irq_is_enabled(unsigned int irq)
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{
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return ((PFIC->ISR[irq >> 5] & (1 << (irq & 0x1F))) != 0);
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}
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static int pfic_init(void)
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{
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/* `wfi` is called with interrupts disabled. Configure the PFIC to wake up on any event,
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* including any interrupt.
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*/
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PFIC->SCTLR = SEVONPEND | WFITOWFE;
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return 0;
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}
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SYS_INIT(pfic_init, PRE_KERNEL_1, CONFIG_INTC_INIT_PRIORITY);
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