Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <asm/traps.h>
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#include <asm/apollohw.h>
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#include "apollo.h"
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static unsigned int apollo_irq_startup(struct irq_data *data)
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{
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unsigned int irq = data->irq;
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if (irq < 8)
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*(volatile unsigned char *)(pica+1) &= ~(1 << irq);
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else
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*(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
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return 0;
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}
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static void apollo_irq_shutdown(struct irq_data *data)
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{
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unsigned int irq = data->irq;
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if (irq < 8)
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*(volatile unsigned char *)(pica+1) |= (1 << irq);
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else
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*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
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}
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static void apollo_irq_eoi(struct irq_data *data)
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{
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*(volatile unsigned char *)(pica) = 0x20;
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*(volatile unsigned char *)(picb) = 0x20;
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}
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static struct irq_chip apollo_irq_chip = {
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.name = "apollo",
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.irq_startup = apollo_irq_startup,
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.irq_shutdown = apollo_irq_shutdown,
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.irq_eoi = apollo_irq_eoi,
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};
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void __init dn_init_IRQ(void)
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{
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m68k_setup_user_interrupt(VEC_USER + 96, 16);
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m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
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IRQ_APOLLO, 16);
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}
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