#include <linux/amba/pl022.h>
#include <linux/amba/pl08x.h>
+#include <linux/irqchip/spear-shirq.h>
#include <linux/of_irq.h>
#include <linux/io.h>
#include <asm/hardware/pl080.h>
#include <asm/hardware/vic.h>
#include <plat/pl080.h>
-#include <plat/shirq.h>
#include <mach/generic.h>
#include <mach/spear.h>
# Common support
obj-y := restart.o time.o
-obj-$(CONFIG_ARCH_SPEAR3XX) += pl080.o shirq.o
+obj-$(CONFIG_ARCH_SPEAR3XX) += pl080.o
obj-$(CONFIG_ARCH_SPEAR6XX) += pl080.o
+++ /dev/null
-/*
- * arch/arm/plat-spear/include/plat/shirq.h
- *
- * SPEAr platform shared irq layer header file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#ifndef __PLAT_SHIRQ_H
-#define __PLAT_SHIRQ_H
-
-#include <linux/irq.h>
-#include <linux/types.h>
-
-/*
- * struct shirq_regs: shared irq register configuration
- *
- * enb_reg: enable register offset
- * reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt
- * status_reg: status register offset
- * status_reg_mask: status register valid mask
- * clear_reg: clear register offset
- * reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt
- */
-struct shirq_regs {
- u32 enb_reg;
- u32 reset_to_enb;
- u32 status_reg;
- u32 clear_reg;
- u32 reset_to_clear;
-};
-
-/*
- * struct spear_shirq: shared irq structure
- *
- * irq: hardware irq number
- * irq_base: base irq in linux domain
- * irq_nr: no. of shared interrupts in a particular block
- * irq_bit_off: starting bit offset in the status register
- * invalid_irq: irq group is currently disabled
- * base: base address of shared irq register
- * regs: register configuration for shared irq block
- */
-struct spear_shirq {
- u32 irq;
- u32 irq_base;
- u32 irq_nr;
- u32 irq_bit_off;
- int invalid_irq;
- void __iomem *base;
- struct shirq_regs regs;
-};
-
-int __init spear300_shirq_of_init(struct device_node *np,
- struct device_node *parent);
-int __init spear310_shirq_of_init(struct device_node *np,
- struct device_node *parent);
-int __init spear320_shirq_of_init(struct device_node *np,
- struct device_node *parent);
-
-#endif /* __PLAT_SHIRQ_H */
+++ /dev/null
-/*
- * arch/arm/plat-spear/shirq.c
- *
- * SPEAr platform shared irq layer source file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar <viresh.linux@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/err.h>
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/spinlock.h>
-#include <plat/shirq.h>
-
-static DEFINE_SPINLOCK(lock);
-
-/* spear300 shared irq registers offsets and masks */
-#define SPEAR300_INT_ENB_MASK_REG 0x54
-#define SPEAR300_INT_STS_MASK_REG 0x58
-
-static struct spear_shirq spear300_shirq_ras1 = {
- .irq_nr = 9,
- .irq_bit_off = 0,
- .regs = {
- .enb_reg = SPEAR300_INT_ENB_MASK_REG,
- .status_reg = SPEAR300_INT_STS_MASK_REG,
- .clear_reg = -1,
- },
-};
-
-static struct spear_shirq *spear300_shirq_blocks[] = {
- &spear300_shirq_ras1,
-};
-
-/* spear310 shared irq registers offsets and masks */
-#define SPEAR310_INT_STS_MASK_REG 0x04
-
-static struct spear_shirq spear310_shirq_ras1 = {
- .irq_nr = 8,
- .irq_bit_off = 0,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
- },
-};
-
-static struct spear_shirq spear310_shirq_ras2 = {
- .irq_nr = 5,
- .irq_bit_off = 8,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
- },
-};
-
-static struct spear_shirq spear310_shirq_ras3 = {
- .irq_nr = 1,
- .irq_bit_off = 13,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
- },
-};
-
-static struct spear_shirq spear310_shirq_intrcomm_ras = {
- .irq_nr = 3,
- .irq_bit_off = 14,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR310_INT_STS_MASK_REG,
- .clear_reg = -1,
- },
-};
-
-static struct spear_shirq *spear310_shirq_blocks[] = {
- &spear310_shirq_ras1,
- &spear310_shirq_ras2,
- &spear310_shirq_ras3,
- &spear310_shirq_intrcomm_ras,
-};
-
-/* spear320 shared irq registers offsets and masks */
-#define SPEAR320_INT_STS_MASK_REG 0x04
-#define SPEAR320_INT_CLR_MASK_REG 0x04
-#define SPEAR320_INT_ENB_MASK_REG 0x08
-
-static struct spear_shirq spear320_shirq_ras1 = {
- .irq_nr = 3,
- .irq_bit_off = 7,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
- },
-};
-
-static struct spear_shirq spear320_shirq_ras2 = {
- .irq_nr = 1,
- .irq_bit_off = 10,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
- },
-};
-
-static struct spear_shirq spear320_shirq_ras3 = {
- .irq_nr = 3,
- .irq_bit_off = 0,
- .invalid_irq = 1,
- .regs = {
- .enb_reg = SPEAR320_INT_ENB_MASK_REG,
- .reset_to_enb = 1,
- .status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
- },
-};
-
-static struct spear_shirq spear320_shirq_intrcomm_ras = {
- .irq_nr = 11,
- .irq_bit_off = 11,
- .regs = {
- .enb_reg = -1,
- .status_reg = SPEAR320_INT_STS_MASK_REG,
- .clear_reg = SPEAR320_INT_CLR_MASK_REG,
- .reset_to_clear = 1,
- },
-};
-
-static struct spear_shirq *spear320_shirq_blocks[] = {
- &spear320_shirq_ras3,
- &spear320_shirq_ras1,
- &spear320_shirq_ras2,
- &spear320_shirq_intrcomm_ras,
-};
-
-static void shirq_irq_mask_unmask(struct irq_data *d, bool mask)
-{
- struct spear_shirq *shirq = irq_data_get_irq_chip_data(d);
- u32 val, offset = d->irq - shirq->irq_base;
- unsigned long flags;
-
- if (shirq->regs.enb_reg == -1)
- return;
-
- spin_lock_irqsave(&lock, flags);
- val = readl(shirq->base + shirq->regs.enb_reg);
-
- if (mask ^ shirq->regs.reset_to_enb)
- val &= ~(0x1 << shirq->irq_bit_off << offset);
- else
- val |= 0x1 << shirq->irq_bit_off << offset;
-
- writel(val, shirq->base + shirq->regs.enb_reg);
- spin_unlock_irqrestore(&lock, flags);
-
-}
-
-static void shirq_irq_mask(struct irq_data *d)
-{
- shirq_irq_mask_unmask(d, 1);
-}
-
-static void shirq_irq_unmask(struct irq_data *d)
-{
- shirq_irq_mask_unmask(d, 0);
-}
-
-static struct irq_chip shirq_chip = {
- .name = "spear-shirq",
- .irq_ack = shirq_irq_mask,
- .irq_mask = shirq_irq_mask,
- .irq_unmask = shirq_irq_unmask,
-};
-
-static void shirq_handler(unsigned irq, struct irq_desc *desc)
-{
- u32 i, j, val, mask, tmp;
- struct irq_chip *chip;
- struct spear_shirq *shirq = irq_get_handler_data(irq);
-
- chip = irq_get_chip(irq);
- chip->irq_ack(&desc->irq_data);
-
- mask = ((0x1 << shirq->irq_nr) - 1) << shirq->irq_bit_off;
- while ((val = readl(shirq->base + shirq->regs.status_reg) &
- mask)) {
-
- val >>= shirq->irq_bit_off;
- for (i = 0, j = 1; i < shirq->irq_nr; i++, j <<= 1) {
-
- if (!(j & val))
- continue;
-
- generic_handle_irq(shirq->irq_base + i);
-
- /* clear interrupt */
- if (shirq->regs.clear_reg == -1)
- continue;
-
- tmp = readl(shirq->base + shirq->regs.clear_reg);
- if (shirq->regs.reset_to_clear)
- tmp &= ~(j << shirq->irq_bit_off);
- else
- tmp |= (j << shirq->irq_bit_off);
- writel(tmp, shirq->base + shirq->regs.clear_reg);
- }
- }
- chip->irq_unmask(&desc->irq_data);
-}
-
-static void __init spear_shirq_register(struct spear_shirq *shirq)
-{
- int i;
-
- if (shirq->invalid_irq)
- return;
-
- irq_set_chained_handler(shirq->irq, shirq_handler);
- for (i = 0; i < shirq->irq_nr; i++) {
- irq_set_chip_and_handler(shirq->irq_base + i,
- &shirq_chip, handle_simple_irq);
- set_irq_flags(shirq->irq_base + i, IRQF_VALID);
- irq_set_chip_data(shirq->irq_base + i, shirq);
- }
-
- irq_set_handler_data(shirq->irq, shirq);
-}
-
-static int __init shirq_init(struct spear_shirq **shirq_blocks, int block_nr,
- struct device_node *np)
-{
- int i, irq_base, hwirq = 0, irq_nr = 0;
- static struct irq_domain *shirq_domain;
- void __iomem *base;
-
- base = of_iomap(np, 0);
- if (!base) {
- pr_err("%s: failed to map shirq registers\n", __func__);
- return -ENXIO;
- }
-
- for (i = 0; i < block_nr; i++)
- irq_nr += shirq_blocks[i]->irq_nr;
-
- irq_base = irq_alloc_descs(-1, 0, irq_nr, 0);
- if (IS_ERR_VALUE(irq_base)) {
- pr_err("%s: irq desc alloc failed\n", __func__);
- goto err_unmap;
- }
-
- shirq_domain = irq_domain_add_legacy(np, irq_nr, irq_base, 0,
- &irq_domain_simple_ops, NULL);
- if (WARN_ON(!shirq_domain)) {
- pr_warn("%s: irq domain init failed\n", __func__);
- goto err_free_desc;
- }
-
- for (i = 0; i < block_nr; i++) {
- shirq_blocks[i]->base = base;
- shirq_blocks[i]->irq_base = irq_find_mapping(shirq_domain,
- hwirq);
- shirq_blocks[i]->irq = irq_of_parse_and_map(np, i);
-
- spear_shirq_register(shirq_blocks[i]);
- hwirq += shirq_blocks[i]->irq_nr;
- }
-
- return 0;
-
-err_free_desc:
- irq_free_descs(irq_base, irq_nr);
-err_unmap:
- iounmap(base);
- return -ENXIO;
-}
-
-int __init spear300_shirq_of_init(struct device_node *np,
- struct device_node *parent)
-{
- return shirq_init(spear300_shirq_blocks,
- ARRAY_SIZE(spear300_shirq_blocks), np);
-}
-
-int __init spear310_shirq_of_init(struct device_node *np,
- struct device_node *parent)
-{
- return shirq_init(spear310_shirq_blocks,
- ARRAY_SIZE(spear310_shirq_blocks), np);
-}
-
-int __init spear320_shirq_of_init(struct device_node *np,
- struct device_node *parent)
-{
- return shirq_init(spear320_shirq_blocks,
- ARRAY_SIZE(spear320_shirq_blocks), np);
-}
-obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
+obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o
+obj-$(CONFIG_ARCH_SPEAR3XX) += spear-shirq.o
--- /dev/null
+/*
+ * SPEAr platform shared irq layer source file
+ *
+ * Copyright (C) 2009-2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@gmail.com>
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Shiraz Hashim <shiraz.hashim@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/irqdomain.h>
+#include <linux/irqchip/spear-shirq.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/spinlock.h>
+
+static DEFINE_SPINLOCK(lock);
+
+/* spear300 shared irq registers offsets and masks */
+#define SPEAR300_INT_ENB_MASK_REG 0x54
+#define SPEAR300_INT_STS_MASK_REG 0x58
+
+static struct spear_shirq spear300_shirq_ras1 = {
+ .irq_nr = 9,
+ .irq_bit_off = 0,
+ .regs = {
+ .enb_reg = SPEAR300_INT_ENB_MASK_REG,
+ .status_reg = SPEAR300_INT_STS_MASK_REG,
+ .clear_reg = -1,
+ },
+};
+
+static struct spear_shirq *spear300_shirq_blocks[] = {
+ &spear300_shirq_ras1,
+};
+
+/* spear310 shared irq registers offsets and masks */
+#define SPEAR310_INT_STS_MASK_REG 0x04
+
+static struct spear_shirq spear310_shirq_ras1 = {
+ .irq_nr = 8,
+ .irq_bit_off = 0,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR310_INT_STS_MASK_REG,
+ .clear_reg = -1,
+ },
+};
+
+static struct spear_shirq spear310_shirq_ras2 = {
+ .irq_nr = 5,
+ .irq_bit_off = 8,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR310_INT_STS_MASK_REG,
+ .clear_reg = -1,
+ },
+};
+
+static struct spear_shirq spear310_shirq_ras3 = {
+ .irq_nr = 1,
+ .irq_bit_off = 13,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR310_INT_STS_MASK_REG,
+ .clear_reg = -1,
+ },
+};
+
+static struct spear_shirq spear310_shirq_intrcomm_ras = {
+ .irq_nr = 3,
+ .irq_bit_off = 14,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR310_INT_STS_MASK_REG,
+ .clear_reg = -1,
+ },
+};
+
+static struct spear_shirq *spear310_shirq_blocks[] = {
+ &spear310_shirq_ras1,
+ &spear310_shirq_ras2,
+ &spear310_shirq_ras3,
+ &spear310_shirq_intrcomm_ras,
+};
+
+/* spear320 shared irq registers offsets and masks */
+#define SPEAR320_INT_STS_MASK_REG 0x04
+#define SPEAR320_INT_CLR_MASK_REG 0x04
+#define SPEAR320_INT_ENB_MASK_REG 0x08
+
+static struct spear_shirq spear320_shirq_ras1 = {
+ .irq_nr = 3,
+ .irq_bit_off = 7,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR320_INT_STS_MASK_REG,
+ .clear_reg = SPEAR320_INT_CLR_MASK_REG,
+ .reset_to_clear = 1,
+ },
+};
+
+static struct spear_shirq spear320_shirq_ras2 = {
+ .irq_nr = 1,
+ .irq_bit_off = 10,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR320_INT_STS_MASK_REG,
+ .clear_reg = SPEAR320_INT_CLR_MASK_REG,
+ .reset_to_clear = 1,
+ },
+};
+
+static struct spear_shirq spear320_shirq_ras3 = {
+ .irq_nr = 3,
+ .irq_bit_off = 0,
+ .invalid_irq = 1,
+ .regs = {
+ .enb_reg = SPEAR320_INT_ENB_MASK_REG,
+ .reset_to_enb = 1,
+ .status_reg = SPEAR320_INT_STS_MASK_REG,
+ .clear_reg = SPEAR320_INT_CLR_MASK_REG,
+ .reset_to_clear = 1,
+ },
+};
+
+static struct spear_shirq spear320_shirq_intrcomm_ras = {
+ .irq_nr = 11,
+ .irq_bit_off = 11,
+ .regs = {
+ .enb_reg = -1,
+ .status_reg = SPEAR320_INT_STS_MASK_REG,
+ .clear_reg = SPEAR320_INT_CLR_MASK_REG,
+ .reset_to_clear = 1,
+ },
+};
+
+static struct spear_shirq *spear320_shirq_blocks[] = {
+ &spear320_shirq_ras3,
+ &spear320_shirq_ras1,
+ &spear320_shirq_ras2,
+ &spear320_shirq_intrcomm_ras,
+};
+
+static void shirq_irq_mask_unmask(struct irq_data *d, bool mask)
+{
+ struct spear_shirq *shirq = irq_data_get_irq_chip_data(d);
+ u32 val, offset = d->irq - shirq->irq_base;
+ unsigned long flags;
+
+ if (shirq->regs.enb_reg == -1)
+ return;
+
+ spin_lock_irqsave(&lock, flags);
+ val = readl(shirq->base + shirq->regs.enb_reg);
+
+ if (mask ^ shirq->regs.reset_to_enb)
+ val &= ~(0x1 << shirq->irq_bit_off << offset);
+ else
+ val |= 0x1 << shirq->irq_bit_off << offset;
+
+ writel(val, shirq->base + shirq->regs.enb_reg);
+ spin_unlock_irqrestore(&lock, flags);
+
+}
+
+static void shirq_irq_mask(struct irq_data *d)
+{
+ shirq_irq_mask_unmask(d, 1);
+}
+
+static void shirq_irq_unmask(struct irq_data *d)
+{
+ shirq_irq_mask_unmask(d, 0);
+}
+
+static struct irq_chip shirq_chip = {
+ .name = "spear-shirq",
+ .irq_ack = shirq_irq_mask,
+ .irq_mask = shirq_irq_mask,
+ .irq_unmask = shirq_irq_unmask,
+};
+
+static void shirq_handler(unsigned irq, struct irq_desc *desc)
+{
+ u32 i, j, val, mask, tmp;
+ struct irq_chip *chip;
+ struct spear_shirq *shirq = irq_get_handler_data(irq);
+
+ chip = irq_get_chip(irq);
+ chip->irq_ack(&desc->irq_data);
+
+ mask = ((0x1 << shirq->irq_nr) - 1) << shirq->irq_bit_off;
+ while ((val = readl(shirq->base + shirq->regs.status_reg) &
+ mask)) {
+
+ val >>= shirq->irq_bit_off;
+ for (i = 0, j = 1; i < shirq->irq_nr; i++, j <<= 1) {
+
+ if (!(j & val))
+ continue;
+
+ generic_handle_irq(shirq->irq_base + i);
+
+ /* clear interrupt */
+ if (shirq->regs.clear_reg == -1)
+ continue;
+
+ tmp = readl(shirq->base + shirq->regs.clear_reg);
+ if (shirq->regs.reset_to_clear)
+ tmp &= ~(j << shirq->irq_bit_off);
+ else
+ tmp |= (j << shirq->irq_bit_off);
+ writel(tmp, shirq->base + shirq->regs.clear_reg);
+ }
+ }
+ chip->irq_unmask(&desc->irq_data);
+}
+
+static void __init spear_shirq_register(struct spear_shirq *shirq)
+{
+ int i;
+
+ if (shirq->invalid_irq)
+ return;
+
+ irq_set_chained_handler(shirq->irq, shirq_handler);
+ for (i = 0; i < shirq->irq_nr; i++) {
+ irq_set_chip_and_handler(shirq->irq_base + i,
+ &shirq_chip, handle_simple_irq);
+ set_irq_flags(shirq->irq_base + i, IRQF_VALID);
+ irq_set_chip_data(shirq->irq_base + i, shirq);
+ }
+
+ irq_set_handler_data(shirq->irq, shirq);
+}
+
+static int __init shirq_init(struct spear_shirq **shirq_blocks, int block_nr,
+ struct device_node *np)
+{
+ int i, irq_base, hwirq = 0, irq_nr = 0;
+ static struct irq_domain *shirq_domain;
+ void __iomem *base;
+
+ base = of_iomap(np, 0);
+ if (!base) {
+ pr_err("%s: failed to map shirq registers\n", __func__);
+ return -ENXIO;
+ }
+
+ for (i = 0; i < block_nr; i++)
+ irq_nr += shirq_blocks[i]->irq_nr;
+
+ irq_base = irq_alloc_descs(-1, 0, irq_nr, 0);
+ if (IS_ERR_VALUE(irq_base)) {
+ pr_err("%s: irq desc alloc failed\n", __func__);
+ goto err_unmap;
+ }
+
+ shirq_domain = irq_domain_add_legacy(np, irq_nr, irq_base, 0,
+ &irq_domain_simple_ops, NULL);
+ if (WARN_ON(!shirq_domain)) {
+ pr_warn("%s: irq domain init failed\n", __func__);
+ goto err_free_desc;
+ }
+
+ for (i = 0; i < block_nr; i++) {
+ shirq_blocks[i]->base = base;
+ shirq_blocks[i]->irq_base = irq_find_mapping(shirq_domain,
+ hwirq);
+ shirq_blocks[i]->irq = irq_of_parse_and_map(np, i);
+
+ spear_shirq_register(shirq_blocks[i]);
+ hwirq += shirq_blocks[i]->irq_nr;
+ }
+
+ return 0;
+
+err_free_desc:
+ irq_free_descs(irq_base, irq_nr);
+err_unmap:
+ iounmap(base);
+ return -ENXIO;
+}
+
+int __init spear300_shirq_of_init(struct device_node *np,
+ struct device_node *parent)
+{
+ return shirq_init(spear300_shirq_blocks,
+ ARRAY_SIZE(spear300_shirq_blocks), np);
+}
+
+int __init spear310_shirq_of_init(struct device_node *np,
+ struct device_node *parent)
+{
+ return shirq_init(spear310_shirq_blocks,
+ ARRAY_SIZE(spear310_shirq_blocks), np);
+}
+
+int __init spear320_shirq_of_init(struct device_node *np,
+ struct device_node *parent)
+{
+ return shirq_init(spear320_shirq_blocks,
+ ARRAY_SIZE(spear320_shirq_blocks), np);
+}
--- /dev/null
+/*
+ * SPEAr platform shared irq layer header file
+ *
+ * Copyright (C) 2009-2012 ST Microelectronics
+ * Viresh Kumar <viresh.linux@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __SPEAR_SHIRQ_H
+#define __SPEAR_SHIRQ_H
+
+#include <linux/irq.h>
+#include <linux/types.h>
+
+/*
+ * struct shirq_regs: shared irq register configuration
+ *
+ * enb_reg: enable register offset
+ * reset_to_enb: val 1 indicates, we need to clear bit for enabling interrupt
+ * status_reg: status register offset
+ * status_reg_mask: status register valid mask
+ * clear_reg: clear register offset
+ * reset_to_clear: val 1 indicates, we need to clear bit for clearing interrupt
+ */
+struct shirq_regs {
+ u32 enb_reg;
+ u32 reset_to_enb;
+ u32 status_reg;
+ u32 clear_reg;
+ u32 reset_to_clear;
+};
+
+/*
+ * struct spear_shirq: shared irq structure
+ *
+ * irq: hardware irq number
+ * irq_base: base irq in linux domain
+ * irq_nr: no. of shared interrupts in a particular block
+ * irq_bit_off: starting bit offset in the status register
+ * invalid_irq: irq group is currently disabled
+ * base: base address of shared irq register
+ * regs: register configuration for shared irq block
+ */
+struct spear_shirq {
+ u32 irq;
+ u32 irq_base;
+ u32 irq_nr;
+ u32 irq_bit_off;
+ int invalid_irq;
+ void __iomem *base;
+ struct shirq_regs regs;
+};
+
+int __init spear300_shirq_of_init(struct device_node *np,
+ struct device_node *parent);
+int __init spear310_shirq_of_init(struct device_node *np,
+ struct device_node *parent);
+int __init spear320_shirq_of_init(struct device_node *np,
+ struct device_node *parent);
+
+#endif /* __SPEAR_SHIRQ_H */
projects / linux-2.6-microblaze.git / commitdiff