manage.c (2bdd10558c8d93009cb6c32ce9e30800fbb08add) manage.c (876dbd4cc1b35c1a4cb96a2be1d43ea0eabce3b4)
1/*
2 * linux/kernel/irq/manage.c
3 *
4 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
5 * Copyright (C) 2005-2006 Thomas Gleixner
6 *
7 * This file contains driver APIs to the irq subsystem.
8 */

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562 * IRQF_TRIGGER_* but the PIC does not support multiple
563 * flow-types?
564 */
565 pr_debug("No set_type function for IRQ %d (%s)\n", irq,
566 chip ? (chip->name ? : "unknown") : "unknown");
567 return 0;
568 }
569
1/*
2 * linux/kernel/irq/manage.c
3 *
4 * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
5 * Copyright (C) 2005-2006 Thomas Gleixner
6 *
7 * This file contains driver APIs to the irq subsystem.
8 */

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562 * IRQF_TRIGGER_* but the PIC does not support multiple
563 * flow-types?
564 */
565 pr_debug("No set_type function for IRQ %d (%s)\n", irq,
566 chip ? (chip->name ? : "unknown") : "unknown");
567 return 0;
568 }
569
570 flags &= IRQ_TYPE_SENSE_MASK;
570 /* caller masked out all except trigger mode flags */
571 ret = chip->irq_set_type(&desc->irq_data, flags);
572
571 /* caller masked out all except trigger mode flags */
572 ret = chip->irq_set_type(&desc->irq_data, flags);
573
573 if (ret)
574 pr_err("setting trigger mode %lu for irq %u failed (%pF)\n",
575 flags, irq, chip->irq_set_type);
576 else {
577 if (flags & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH))
578 flags |= IRQ_LEVEL;
579 /* note that IRQF_TRIGGER_MASK == IRQ_TYPE_SENSE_MASK */
580 desc->status &= ~(IRQ_LEVEL | IRQ_TYPE_SENSE_MASK);
581 desc->status |= flags;
574 switch (ret) {
575 case IRQ_SET_MASK_OK:
576 irqd_clear(&desc->irq_data, IRQD_TRIGGER_MASK);
577 irqd_set(&desc->irq_data, flags);
582
578
579 case IRQ_SET_MASK_OK_NOCOPY:
580 flags = irqd_get_trigger_type(&desc->irq_data);
581 irq_settings_set_trigger_mask(desc, flags);
582 irqd_clear(&desc->irq_data, IRQD_LEVEL);
583 irq_settings_clr_level(desc);
584 if (flags & IRQ_TYPE_LEVEL_MASK) {
585 irq_settings_set_level(desc);
586 irqd_set(&desc->irq_data, IRQD_LEVEL);
587 }
588
583 if (chip != desc->irq_data.chip)
584 irq_chip_set_defaults(desc->irq_data.chip);
589 if (chip != desc->irq_data.chip)
590 irq_chip_set_defaults(desc->irq_data.chip);
591 return 0;
592 default:
593 pr_err("setting trigger mode %lu for irq %u failed (%pF)\n",
594 flags, irq, chip->irq_set_type);
585 }
595 }
586
587 return ret;
588}
589
590/*
591 * Default primary interrupt handler for threaded interrupts. Is
592 * assigned as primary handler when request_threaded_irq is called
593 * with handler == NULL. Useful for oneshot interrupts.
594 */

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918 if (new->flags & IRQF_NOBALANCING) {
919 irq_settings_set_no_balancing(desc);
920 irqd_set(&desc->irq_data, IRQD_NO_BALANCING);
921 }
922
923 /* Set default affinity mask once everything is setup */
924 setup_affinity(irq, desc, mask);
925
596 return ret;
597}
598
599/*
600 * Default primary interrupt handler for threaded interrupts. Is
601 * assigned as primary handler when request_threaded_irq is called
602 * with handler == NULL. Useful for oneshot interrupts.
603 */

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927 if (new->flags & IRQF_NOBALANCING) {
928 irq_settings_set_no_balancing(desc);
929 irqd_set(&desc->irq_data, IRQD_NO_BALANCING);
930 }
931
932 /* Set default affinity mask once everything is setup */
933 setup_affinity(irq, desc, mask);
934
926 } else if ((new->flags & IRQF_TRIGGER_MASK)
927 && (new->flags & IRQF_TRIGGER_MASK)
928 != (desc->status & IRQ_TYPE_SENSE_MASK)) {
929 /* hope the handler works with the actual trigger mode... */
930 pr_warning("IRQ %d uses trigger mode %d; requested %d\n",
931 irq, (int)(desc->status & IRQ_TYPE_SENSE_MASK),
932 (int)(new->flags & IRQF_TRIGGER_MASK));
935 } else if (new->flags & IRQF_TRIGGER_MASK) {
936 unsigned int nmsk = new->flags & IRQF_TRIGGER_MASK;
937 unsigned int omsk = irq_settings_get_trigger_mask(desc);
938
939 if (nmsk != omsk)
940 /* hope the handler works with current trigger mode */
941 pr_warning("IRQ %d uses trigger mode %u; requested %u\n",
942 irq, nmsk, omsk);
933 }
934
935 new->irq = irq;
936 *old_ptr = new;
937
938 /* Reset broken irq detection when installing new handler */
939 desc->irq_count = 0;
940 desc->irqs_unhandled = 0;

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944
945 new->irq = irq;
946 *old_ptr = new;
947
948 /* Reset broken irq detection when installing new handler */
949 desc->irq_count = 0;
950 desc->irqs_unhandled = 0;

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