From 1ccdde057b03a2446eeee7b7a63306c4d9c68d61 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 27 Nov 2014 16:10:06 +0100 Subject: [PATCH] ARM: at91: remove legacy IRQ driver and related code Remove irc.c and associated header file. The related code was idendified by the CONFIG_OLD_IRQ_AT91 option that was removed previously. It has been spotted by following coccinelle semantic match: @rule1@ expression E; statement S; @@ ( - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91)) S | - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && E) S ) Cc: Julia Lawall Signed-off-by: Nicolas Ferre Acked-by: Boris BREZILLON --- arch/arm/mach-at91/Makefile | 1 - arch/arm/mach-at91/at91_aic.h | 99 --------- arch/arm/mach-at91/board-dt-rm9200.c | 1 - arch/arm/mach-at91/board-dt-sam9.c | 1 - arch/arm/mach-at91/board-dt-sama5.c | 1 - arch/arm/mach-at91/generic.h | 2 - arch/arm/mach-at91/irq.c | 296 --------------------------- arch/arm/mach-at91/pm.c | 22 -- arch/arm/mach-at91/setup.c | 4 - 9 files changed, 427 deletions(-) delete mode 100644 arch/arm/mach-at91/at91_aic.h delete mode 100644 arch/arm/mach-at91/irq.c diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile index b486c7760ac4..2371b8845bf5 100644 --- a/arch/arm/mach-at91/Makefile +++ b/arch/arm/mach-at91/Makefile @@ -4,7 +4,6 @@ obj-y := gpio.o setup.o sysirq_mask.o -obj-$(CONFIG_OLD_IRQ_AT91) += irq.o obj-$(CONFIG_SOC_AT91SAM9) += sam9_smc.o # CPU-specific support diff --git a/arch/arm/mach-at91/at91_aic.h b/arch/arm/mach-at91/at91_aic.h deleted file mode 100644 index eaea66197fa1..000000000000 --- a/arch/arm/mach-at91/at91_aic.h +++ /dev/null @@ -1,99 +0,0 @@ -/* - * arch/arm/mach-at91/include/mach/at91_aic.h - * - * Copyright (C) 2005 Ivan Kokshaysky - * Copyright (C) SAN People - * - * Advanced Interrupt Controller (AIC) - System peripherals registers. - * Based on AT91RM9200 datasheet revision E. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#ifndef AT91_AIC_H -#define AT91_AIC_H - -#ifndef __ASSEMBLY__ -extern void __iomem *at91_aic_base; - -#define at91_aic_read(field) \ - __raw_readl(at91_aic_base + field) - -#define at91_aic_write(field, value) \ - __raw_writel(value, at91_aic_base + field) -#else -.extern at91_aic_base -#endif - -/* Number of irq lines managed by AIC */ -#define NR_AIC_IRQS 32 -#define NR_AIC5_IRQS 128 - -#define AT91_AIC5_SSR 0x0 /* Source Select Register [AIC5] */ -#define AT91_AIC5_INTSEL_MSK (0x7f << 0) /* Interrupt Line Selection Mask */ - -#define AT91_AIC_IRQ_MIN_PRIORITY 0 -#define AT91_AIC_IRQ_MAX_PRIORITY 7 - -#define AT91_AIC_SMR(n) ((n) * 4) /* Source Mode Registers 0-31 */ -#define AT91_AIC5_SMR 0x4 /* Source Mode Register [AIC5] */ -#define AT91_AIC_PRIOR (7 << 0) /* Priority Level */ -#define AT91_AIC_SRCTYPE (3 << 5) /* Interrupt Source Type */ -#define AT91_AIC_SRCTYPE_LOW (0 << 5) -#define AT91_AIC_SRCTYPE_FALLING (1 << 5) -#define AT91_AIC_SRCTYPE_HIGH (2 << 5) -#define AT91_AIC_SRCTYPE_RISING (3 << 5) - -#define AT91_AIC_SVR(n) (0x80 + ((n) * 4)) /* Source Vector Registers 0-31 */ -#define AT91_AIC5_SVR 0x8 /* Source Vector Register [AIC5] */ -#define AT91_AIC_IVR 0x100 /* Interrupt Vector Register */ -#define AT91_AIC5_IVR 0x10 /* Interrupt Vector Register [AIC5] */ -#define AT91_AIC_FVR 0x104 /* Fast Interrupt Vector Register */ -#define AT91_AIC5_FVR 0x14 /* Fast Interrupt Vector Register [AIC5] */ -#define AT91_AIC_ISR 0x108 /* Interrupt Status Register */ -#define AT91_AIC5_ISR 0x18 /* Interrupt Status Register [AIC5] */ -#define AT91_AIC_IRQID (0x1f << 0) /* Current Interrupt Identifier */ - -#define AT91_AIC_IPR 0x10c /* Interrupt Pending Register */ -#define AT91_AIC5_IPR0 0x20 /* Interrupt Pending Register 0 [AIC5] */ -#define AT91_AIC5_IPR1 0x24 /* Interrupt Pending Register 1 [AIC5] */ -#define AT91_AIC5_IPR2 0x28 /* Interrupt Pending Register 2 [AIC5] */ -#define AT91_AIC5_IPR3 0x2c /* Interrupt Pending Register 3 [AIC5] */ -#define AT91_AIC_IMR 0x110 /* Interrupt Mask Register */ -#define AT91_AIC5_IMR 0x30 /* Interrupt Mask Register [AIC5] */ -#define AT91_AIC_CISR 0x114 /* Core Interrupt Status Register */ -#define AT91_AIC5_CISR 0x34 /* Core Interrupt Status Register [AIC5] */ -#define AT91_AIC_NFIQ (1 << 0) /* nFIQ Status */ -#define AT91_AIC_NIRQ (1 << 1) /* nIRQ Status */ - -#define AT91_AIC_IECR 0x120 /* Interrupt Enable Command Register */ -#define AT91_AIC5_IECR 0x40 /* Interrupt Enable Command Register [AIC5] */ -#define AT91_AIC_IDCR 0x124 /* Interrupt Disable Command Register */ -#define AT91_AIC5_IDCR 0x44 /* Interrupt Disable Command Register [AIC5] */ -#define AT91_AIC_ICCR 0x128 /* Interrupt Clear Command Register */ -#define AT91_AIC5_ICCR 0x48 /* Interrupt Clear Command Register [AIC5] */ -#define AT91_AIC_ISCR 0x12c /* Interrupt Set Command Register */ -#define AT91_AIC5_ISCR 0x4c /* Interrupt Set Command Register [AIC5] */ -#define AT91_AIC_EOICR 0x130 /* End of Interrupt Command Register */ -#define AT91_AIC5_EOICR 0x38 /* End of Interrupt Command Register [AIC5] */ -#define AT91_AIC_SPU 0x134 /* Spurious Interrupt Vector Register */ -#define AT91_AIC5_SPU 0x3c /* Spurious Interrupt Vector Register [AIC5] */ -#define AT91_AIC_DCR 0x138 /* Debug Control Register */ -#define AT91_AIC5_DCR 0x6c /* Debug Control Register [AIC5] */ -#define AT91_AIC_DCR_PROT (1 << 0) /* Protection Mode */ -#define AT91_AIC_DCR_GMSK (1 << 1) /* General Mask */ - -#define AT91_AIC_FFER 0x140 /* Fast Forcing Enable Register [SAM9 only] */ -#define AT91_AIC5_FFER 0x50 /* Fast Forcing Enable Register [AIC5] */ -#define AT91_AIC_FFDR 0x144 /* Fast Forcing Disable Register [SAM9 only] */ -#define AT91_AIC5_FFDR 0x54 /* Fast Forcing Disable Register [AIC5] */ -#define AT91_AIC_FFSR 0x148 /* Fast Forcing Status Register [SAM9 only] */ -#define AT91_AIC5_FFSR 0x58 /* Fast Forcing Status Register [AIC5] */ - -void at91_aic_handle_irq(struct pt_regs *regs); -void at91_aic5_handle_irq(struct pt_regs *regs); - -#endif diff --git a/arch/arm/mach-at91/board-dt-rm9200.c b/arch/arm/mach-at91/board-dt-rm9200.c index 226563f850b8..feeb1a0f258e 100644 --- a/arch/arm/mach-at91/board-dt-rm9200.c +++ b/arch/arm/mach-at91/board-dt-rm9200.c @@ -22,7 +22,6 @@ #include #include -#include "at91_aic.h" #include "generic.h" static void __init at91rm9200_dt_timer_init(void) diff --git a/arch/arm/mach-at91/board-dt-sam9.c b/arch/arm/mach-at91/board-dt-sam9.c index d3048ccdc41f..67c1bcbf0ed9 100644 --- a/arch/arm/mach-at91/board-dt-sam9.c +++ b/arch/arm/mach-at91/board-dt-sam9.c @@ -21,7 +21,6 @@ #include #include -#include "at91_aic.h" #include "board.h" #include "generic.h" diff --git a/arch/arm/mach-at91/board-dt-sama5.c b/arch/arm/mach-at91/board-dt-sama5.c index 129e2917506b..8fb9ef5333f1 100644 --- a/arch/arm/mach-at91/board-dt-sama5.c +++ b/arch/arm/mach-at91/board-dt-sama5.c @@ -24,7 +24,6 @@ #include #include -#include "at91_aic.h" #include "generic.h" static void __init sama5_dt_device_init(void) diff --git a/arch/arm/mach-at91/generic.h b/arch/arm/mach-at91/generic.h index 1ec9b011b6a9..713d1d9e50a1 100644 --- a/arch/arm/mach-at91/generic.h +++ b/arch/arm/mach-at91/generic.h @@ -29,8 +29,6 @@ extern void __init at91_dt_initialize(void); /* Interrupts */ extern void __init at91_init_irq_default(void); extern void __init at91_init_interrupts(unsigned int priority[]); -extern void __init at91_aic_init(unsigned int priority[], - unsigned int ext_irq_mask); extern int __init at91_aic_of_init(struct device_node *node, struct device_node *parent); extern int __init at91_aic5_of_init(struct device_node *node, diff --git a/arch/arm/mach-at91/irq.c b/arch/arm/mach-at91/irq.c deleted file mode 100644 index cdb3ec9efd2b..000000000000 --- a/arch/arm/mach-at91/irq.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - * linux/arch/arm/mach-at91/irq.c - * - * Copyright (C) 2004 SAN People - * Copyright (C) 2004 ATMEL - * Copyright (C) Rick Bronson - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -#include -#include -#include -#include - -#include "at91_aic.h" - -void __iomem *at91_aic_base; -static struct irq_domain *at91_aic_domain; -static struct device_node *at91_aic_np; -static unsigned int n_irqs = NR_AIC_IRQS; - -#ifdef CONFIG_PM - -static unsigned long *wakeups; -static unsigned long *backups; - -#define set_backup(bit) set_bit(bit, backups) -#define clear_backup(bit) clear_bit(bit, backups) - -static int at91_aic_pm_init(void) -{ - backups = kzalloc(BITS_TO_LONGS(n_irqs) * sizeof(*backups), GFP_KERNEL); - if (!backups) - return -ENOMEM; - - wakeups = kzalloc(BITS_TO_LONGS(n_irqs) * sizeof(*backups), GFP_KERNEL); - if (!wakeups) { - kfree(backups); - return -ENOMEM; - } - - return 0; -} - -static int at91_aic_set_wake(struct irq_data *d, unsigned value) -{ - if (unlikely(d->hwirq >= n_irqs)) - return -EINVAL; - - if (value) - set_bit(d->hwirq, wakeups); - else - clear_bit(d->hwirq, wakeups); - - return 0; -} - -void at91_irq_suspend(void) -{ - at91_aic_write(AT91_AIC_IDCR, *backups); - at91_aic_write(AT91_AIC_IECR, *wakeups); -} - -void at91_irq_resume(void) -{ - at91_aic_write(AT91_AIC_IDCR, *wakeups); - at91_aic_write(AT91_AIC_IECR, *backups); -} - -#else -static inline int at91_aic_pm_init(void) -{ - return 0; -} - -#define set_backup(bit) -#define clear_backup(bit) -#define at91_aic_set_wake NULL - -#endif /* CONFIG_PM */ - -asmlinkage void __exception_irq_entry -at91_aic_handle_irq(struct pt_regs *regs) -{ - u32 irqnr; - u32 irqstat; - - irqnr = at91_aic_read(AT91_AIC_IVR); - irqstat = at91_aic_read(AT91_AIC_ISR); - - /* - * ISR value is 0 when there is no current interrupt or when there is - * a spurious interrupt - */ - if (!irqstat) - at91_aic_write(AT91_AIC_EOICR, 0); - else - handle_IRQ(irqnr, regs); -} - -static void at91_aic_mask_irq(struct irq_data *d) -{ - /* Disable interrupt on AIC */ - at91_aic_write(AT91_AIC_IDCR, 1 << d->hwirq); - /* Update ISR cache */ - clear_backup(d->hwirq); -} - -static void at91_aic_unmask_irq(struct irq_data *d) -{ - /* Enable interrupt on AIC */ - at91_aic_write(AT91_AIC_IECR, 1 << d->hwirq); - /* Update ISR cache */ - set_backup(d->hwirq); -} - -static void at91_aic_eoi(struct irq_data *d) -{ - /* - * Mark end-of-interrupt on AIC, the controller doesn't care about - * the value written. Moreover it's a write-only register. - */ - at91_aic_write(AT91_AIC_EOICR, 0); -} - -static unsigned long *at91_extern_irq; - -u32 at91_get_extern_irq(void) -{ - if (!at91_extern_irq) - return 0; - return *at91_extern_irq; -} - -#define is_extern_irq(hwirq) test_bit(hwirq, at91_extern_irq) - -static int at91_aic_compute_srctype(struct irq_data *d, unsigned type) -{ - int srctype; - - switch (type) { - case IRQ_TYPE_LEVEL_HIGH: - srctype = AT91_AIC_SRCTYPE_HIGH; - break; - case IRQ_TYPE_EDGE_RISING: - srctype = AT91_AIC_SRCTYPE_RISING; - break; - case IRQ_TYPE_LEVEL_LOW: - if ((d->hwirq == AT91_ID_FIQ) || is_extern_irq(d->hwirq)) /* only supported on external interrupts */ - srctype = AT91_AIC_SRCTYPE_LOW; - else - srctype = -EINVAL; - break; - case IRQ_TYPE_EDGE_FALLING: - if ((d->hwirq == AT91_ID_FIQ) || is_extern_irq(d->hwirq)) /* only supported on external interrupts */ - srctype = AT91_AIC_SRCTYPE_FALLING; - else - srctype = -EINVAL; - break; - default: - srctype = -EINVAL; - } - - return srctype; -} - -static int at91_aic_set_type(struct irq_data *d, unsigned type) -{ - unsigned int smr; - int srctype; - - srctype = at91_aic_compute_srctype(d, type); - if (srctype < 0) - return srctype; - - smr = at91_aic_read(AT91_AIC_SMR(d->hwirq)) & ~AT91_AIC_SRCTYPE; - at91_aic_write(AT91_AIC_SMR(d->hwirq), smr | srctype); - - return 0; -} - -static struct irq_chip at91_aic_chip = { - .name = "AIC", - .irq_mask = at91_aic_mask_irq, - .irq_unmask = at91_aic_unmask_irq, - .irq_set_type = at91_aic_set_type, - .irq_set_wake = at91_aic_set_wake, - .irq_eoi = at91_aic_eoi, -}; - -static void __init at91_aic_hw_init(unsigned int spu_vector) -{ - int i; - - /* - * Perform 8 End Of Interrupt Command to make sure AIC - * will not Lock out nIRQ - */ - for (i = 0; i < 8; i++) - at91_aic_write(AT91_AIC_EOICR, 0); - - /* - * Spurious Interrupt ID in Spurious Vector Register. - * When there is no current interrupt, the IRQ Vector Register - * reads the value stored in AIC_SPU - */ - at91_aic_write(AT91_AIC_SPU, spu_vector); - - /* No debugging in AIC: Debug (Protect) Control Register */ - at91_aic_write(AT91_AIC_DCR, 0); - - /* Disable and clear all interrupts initially */ - at91_aic_write(AT91_AIC_IDCR, 0xFFFFFFFF); - at91_aic_write(AT91_AIC_ICCR, 0xFFFFFFFF); -} - -/* - * Initialize the AIC interrupt controller. - */ -void __init at91_aic_init(unsigned int *priority, unsigned int ext_irq_mask) -{ - unsigned int i; - int irq_base; - - at91_extern_irq = kzalloc(BITS_TO_LONGS(n_irqs) - * sizeof(*at91_extern_irq), GFP_KERNEL); - - if (at91_aic_pm_init() || at91_extern_irq == NULL) - panic("Unable to allocate bit maps\n"); - - *at91_extern_irq = ext_irq_mask; - - at91_aic_base = ioremap(AT91_AIC, 512); - if (!at91_aic_base) - panic("Unable to ioremap AIC registers\n"); - - /* Add irq domain for AIC */ - irq_base = irq_alloc_descs(-1, 0, n_irqs, 0); - if (irq_base < 0) { - WARN(1, "Cannot allocate irq_descs, assuming pre-allocated\n"); - irq_base = 0; - } - at91_aic_domain = irq_domain_add_legacy(at91_aic_np, n_irqs, - irq_base, 0, - &irq_domain_simple_ops, NULL); - - if (!at91_aic_domain) - panic("Unable to add AIC irq domain\n"); - - irq_set_default_host(at91_aic_domain); - - /* - * The IVR is used by macro get_irqnr_and_base to read and verify. - * The irq number is NR_AIC_IRQS when a spurious interrupt has occurred. - */ - for (i = 0; i < n_irqs; i++) { - /* Put hardware irq number in Source Vector Register: */ - at91_aic_write(AT91_AIC_SVR(i), NR_IRQS_LEGACY + i); - /* Active Low interrupt, with the specified priority */ - at91_aic_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]); - irq_set_chip_and_handler(NR_IRQS_LEGACY + i, &at91_aic_chip, handle_fasteoi_irq); - set_irq_flags(i, IRQF_VALID | IRQF_PROBE); - } - - at91_aic_hw_init(n_irqs); -} diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 4073ab7f38f3..a42360f69127 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -29,7 +29,6 @@ #include #include -#include "at91_aic.h" #include "generic.h" #include "pm.h" #include "gpio.h" @@ -136,19 +135,6 @@ static int at91_pm_enter(suspend_state_t state) else at91_gpio_suspend(); - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base) { - at91_irq_suspend(); - - pr_debug("AT91: PM - wake mask %08x, pm state %d\n", - /* remember all the always-wake irqs */ - (at91_pmc_read(AT91_PMC_PCSR) - | (1 << AT91_ID_FIQ) - | (1 << AT91_ID_SYS) - | (at91_get_extern_irq())) - & at91_aic_read(AT91_AIC_IMR), - state); - } - switch (state) { /* * Suspend-to-RAM is like STANDBY plus slow clock mode, so @@ -212,17 +198,9 @@ static int at91_pm_enter(suspend_state_t state) goto error; } - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base) - pr_debug("AT91: PM - wakeup %08x\n", - at91_aic_read(AT91_AIC_IPR) & - at91_aic_read(AT91_AIC_IMR)); - error: target_state = PM_SUSPEND_ON; - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base) - at91_irq_resume(); - if (of_have_populated_dt()) at91_pinctrl_gpio_resume(); else diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index 98b0c1a62899..6c3013e3309b 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -49,10 +49,6 @@ void __init at91_init_irq_default(void) void __init at91_init_interrupts(unsigned int *priority) { - /* Initialize the AIC interrupt controller */ - if (IS_ENABLED(CONFIG_OLD_IRQ_AT91)) - at91_aic_init(priority, at91_boot_soc.extern_irq); - /* Enable GPIO interrupts */ at91_gpio_irq_setup(); }