cregit-Linux how code gets into the kernel

Release 4.7 drivers/irqchip/irq-renesas-h8300h.c

Directory: drivers/irqchip
/*
 * H8/300H interrupt controller driver
 *
 * Copyright 2015 Yoshinori Sato <ysato@users.sourceforge.jp>
 */

#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <asm/io.h>


static const char ipr_bit[] = {
	 7,  6,  5,  5,
	 4,  4,  4,  4,  3,  3,  3,  3,
	 2,  2,  2,  2,  1,  1,  1,  1,
	 0,  0,  0,  0, 15, 15, 15, 15,
	14, 14, 14, 14, 13, 13, 13, 13,
	-1, -1, -1, -1, 11, 11, 11, 11,
	10, 10, 10, 10,  9,  9,  9,  9,
};


static void __iomem *intc_baseaddr;


#define IPR (intc_baseaddr + 6)


static void h8300h_disable_irq(struct irq_data *data) { int bit; int irq = data->irq - 12; bit = ipr_bit[irq]; if (bit >= 0) { if (bit < 8) ctrl_bclr(bit & 7, IPR); else ctrl_bclr(bit & 7, (IPR+1)); } }

Contributors

PersonTokensPropCommitsCommitProp
yoshinori satoyoshinori sato67100.00%1100.00%
Total67100.00%1100.00%


static void h8300h_enable_irq(struct irq_data *data) { int bit; int irq = data->irq - 12; bit = ipr_bit[irq]; if (bit >= 0) { if (bit < 8) ctrl_bset(bit & 7, IPR); else ctrl_bset(bit & 7, (IPR+1)); } }

Contributors

PersonTokensPropCommitsCommitProp
yoshinori satoyoshinori sato67100.00%1100.00%
Total67100.00%1100.00%

struct irq_chip h8300h_irq_chip = { .name = "H8/300H-INTC", .irq_enable = h8300h_enable_irq, .irq_disable = h8300h_disable_irq, };
static int irq_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw_irq_num) { irq_set_chip_and_handler(virq, &h8300h_irq_chip, handle_simple_irq); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
yoshinori satoyoshinori sato31100.00%1100.00%
Total31100.00%1100.00%

static struct irq_domain_ops irq_ops = { .map = irq_map, .xlate = irq_domain_xlate_onecell, };
static int __init h8300h_intc_of_init(struct device_node *intc, struct device_node *parent) { struct irq_domain *domain; intc_baseaddr = of_iomap(intc, 0); BUG_ON(!intc_baseaddr); /* All interrupt priority low */ writeb(0x00, IPR + 0); writeb(0x00, IPR + 1); domain = irq_domain_add_linear(intc, NR_IRQS, &irq_ops, NULL); BUG_ON(!domain); irq_set_default_host(domain); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
yoshinori satoyoshinori sato8297.62%150.00%
daniel lezcanodaniel lezcano22.38%150.00%
Total84100.00%2100.00%

IRQCHIP_DECLARE(h8300h_intc, "renesas,h8300h-intc", h8300h_intc_of_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
yoshinori satoyoshinori sato43799.09%150.00%
daniel lezcanodaniel lezcano40.91%150.00%
Total441100.00%2100.00%
Directory: drivers/irqchip
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
{% endraw %}