diff options
Diffstat (limited to 'arch/arm/mach-mmp/irq-mmp2.c')
| -rw-r--r-- | arch/arm/mach-mmp/irq-mmp2.c | 158 |
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 7895d277421e..000000000000 --- 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); -} |