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Diffstat (limited to 'arch/arm/mach-mmp/irq-mmp2.c')
-rw-r--r--arch/arm/mach-mmp/irq-mmp2.c158
1 files changed, 0 insertions, 158 deletions
diff --git a/arch/arm/mach-mmp/irq-mmp2.c b/arch/arm/mach-mmp/irq-mmp2.c
deleted file mode 100644
index 7895d27..0000000
--- a/arch/arm/mach-mmp/irq-mmp2.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * linux/arch/arm/mach-mmp/irq-mmp2.c
- *
- * Generic IRQ handling, GPIO IRQ demultiplexing, etc.
- *
- * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
- * Copyright: Marvell International Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/io.h>
-
-#include <mach/irqs.h>
-#include <mach/regs-icu.h>
-#include <mach/mmp2.h>
-
-#include "common.h"
-
-static void icu_mask_irq(struct irq_data *d)
-{
- uint32_t r = __raw_readl(ICU_INT_CONF(d->irq));
-
- r &= ~ICU_INT_ROUTE_PJ4_IRQ;
- __raw_writel(r, ICU_INT_CONF(d->irq));
-}
-
-static void icu_unmask_irq(struct irq_data *d)
-{
- uint32_t r = __raw_readl(ICU_INT_CONF(d->irq));
-
- r |= ICU_INT_ROUTE_PJ4_IRQ;
- __raw_writel(r, ICU_INT_CONF(d->irq));
-}
-
-static struct irq_chip icu_irq_chip = {
- .name = "icu_irq",
- .irq_mask = icu_mask_irq,
- .irq_mask_ack = icu_mask_irq,
- .irq_unmask = icu_unmask_irq,
-};
-
-static void pmic_irq_ack(struct irq_data *d)
-{
- if (d->irq == IRQ_MMP2_PMIC)
- mmp2_clear_pmic_int();
-}
-
-#define SECOND_IRQ_MASK(_name_, irq_base, prefix) \
-static void _name_##_mask_irq(struct irq_data *d) \
-{ \
- uint32_t r; \
- r = __raw_readl(prefix##_MASK) | (1 << (d->irq - irq_base)); \
- __raw_writel(r, prefix##_MASK); \
-}
-
-#define SECOND_IRQ_UNMASK(_name_, irq_base, prefix) \
-static void _name_##_unmask_irq(struct irq_data *d) \
-{ \
- uint32_t r; \
- r = __raw_readl(prefix##_MASK) & ~(1 << (d->irq - irq_base)); \
- __raw_writel(r, prefix##_MASK); \
-}
-
-#define SECOND_IRQ_DEMUX(_name_, irq_base, prefix) \
-static void _name_##_irq_demux(unsigned int irq, struct irq_desc *desc) \
-{ \
- unsigned long status, mask, n; \
- mask = __raw_readl(prefix##_MASK); \
- while (1) { \
- status = __raw_readl(prefix##_STATUS) & ~mask; \
- if (status == 0) \
- break; \
- n = find_first_bit(&status, BITS_PER_LONG); \
- while (n < BITS_PER_LONG) { \
- generic_handle_irq(irq_base + n); \
- n = find_next_bit(&status, BITS_PER_LONG, n+1); \
- } \
- } \
-}
-
-#define SECOND_IRQ_CHIP(_name_, irq_base, prefix) \
-SECOND_IRQ_MASK(_name_, irq_base, prefix) \
-SECOND_IRQ_UNMASK(_name_, irq_base, prefix) \
-SECOND_IRQ_DEMUX(_name_, irq_base, prefix) \
-static struct irq_chip _name_##_irq_chip = { \
- .name = #_name_, \
- .irq_mask = _name_##_mask_irq, \
- .irq_unmask = _name_##_unmask_irq, \
-}
-
-SECOND_IRQ_CHIP(pmic, IRQ_MMP2_PMIC_BASE, MMP2_ICU_INT4);
-SECOND_IRQ_CHIP(rtc, IRQ_MMP2_RTC_BASE, MMP2_ICU_INT5);
-SECOND_IRQ_CHIP(twsi, IRQ_MMP2_TWSI_BASE, MMP2_ICU_INT17);
-SECOND_IRQ_CHIP(misc, IRQ_MMP2_MISC_BASE, MMP2_ICU_INT35);
-SECOND_IRQ_CHIP(ssp, IRQ_MMP2_SSP_BASE, MMP2_ICU_INT51);
-
-static void init_mux_irq(struct irq_chip *chip, int start, int num)
-{
- int irq;
-
- for (irq = start; num > 0; irq++, num--) {
- struct irq_data *d = irq_get_irq_data(irq);
-
- /* mask and clear the IRQ */
- chip->irq_mask(d);
- if (chip->irq_ack)
- chip->irq_ack(d);
-
- irq_set_chip(irq, chip);
- set_irq_flags(irq, IRQF_VALID);
- irq_set_handler(irq, handle_level_irq);
- }
-}
-
-void __init mmp2_init_icu(void)
-{
- int irq;
-
- for (irq = 0; irq < IRQ_MMP2_MUX_BASE; irq++) {
- icu_mask_irq(irq_get_irq_data(irq));
- irq_set_chip(irq, &icu_irq_chip);
- set_irq_flags(irq, IRQF_VALID);
-
- switch (irq) {
- case IRQ_MMP2_PMIC_MUX:
- case IRQ_MMP2_RTC_MUX:
- case IRQ_MMP2_TWSI_MUX:
- case IRQ_MMP2_MISC_MUX:
- case IRQ_MMP2_SSP_MUX:
- break;
- default:
- irq_set_handler(irq, handle_level_irq);
- break;
- }
- }
-
- /* NOTE: IRQ_MMP2_PMIC requires the PMIC MFPR register
- * to be written to clear the interrupt
- */
- pmic_irq_chip.irq_ack = pmic_irq_ack;
-
- init_mux_irq(&pmic_irq_chip, IRQ_MMP2_PMIC_BASE, 2);
- init_mux_irq(&rtc_irq_chip, IRQ_MMP2_RTC_BASE, 2);
- init_mux_irq(&twsi_irq_chip, IRQ_MMP2_TWSI_BASE, 5);
- init_mux_irq(&misc_irq_chip, IRQ_MMP2_MISC_BASE, 15);
- init_mux_irq(&ssp_irq_chip, IRQ_MMP2_SSP_BASE, 2);
-
- irq_set_chained_handler(IRQ_MMP2_PMIC_MUX, pmic_irq_demux);
- irq_set_chained_handler(IRQ_MMP2_RTC_MUX, rtc_irq_demux);
- irq_set_chained_handler(IRQ_MMP2_TWSI_MUX, twsi_irq_demux);
- irq_set_chained_handler(IRQ_MMP2_MISC_MUX, misc_irq_demux);
- irq_set_chained_handler(IRQ_MMP2_SSP_MUX, ssp_irq_demux);
-}