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author | Bartosz Golaszewski <bgolaszewski@baylibre.com> | 2019-02-14 15:52:16 +0100 |
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committer | Sekhar Nori <nsekhar@ti.com> | 2019-02-19 20:02:17 +0530 |
commit | 0145beed9d2603870509e0701bc77c86c386fc02 (patch) | |
tree | 221f4e89f311ed5cb5d5819175c49dc69734caac /arch/arm/mach-davinci | |
parent | 76adef4678f624c05c11bae84fe364b58598b9f0 (diff) | |
download | linux-stable-0145beed9d2603870509e0701bc77c86c386fc02.tar.gz linux-stable-0145beed9d2603870509e0701bc77c86c386fc02.tar.bz2 linux-stable-0145beed9d2603870509e0701bc77c86c386fc02.zip |
irqchip: davinci-aintc: move the driver to drivers/irqchip
The aintc driver has now been cleaned up. Move it to drivers/irqchip
where it belongs. There's no device-tree support for any dm* board so
there's no IRQCHIP_OF_DECLARE() - there's only the exported init
function called from machine code.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'arch/arm/mach-davinci')
-rw-r--r-- | arch/arm/mach-davinci/Kconfig | 11 | ||||
-rw-r--r-- | arch/arm/mach-davinci/Makefile | 1 | ||||
-rw-r--r-- | arch/arm/mach-davinci/irq.c | 163 |
3 files changed, 4 insertions, 171 deletions
diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig index da8a039d65f9..71a4d875dd39 100644 --- a/arch/arm/mach-davinci/Kconfig +++ b/arch/arm/mach-davinci/Kconfig @@ -1,9 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 if ARCH_DAVINCI -config AINTC - bool - config CP_INTC bool select IRQ_DOMAIN @@ -17,17 +14,17 @@ comment "DaVinci Core Type" config ARCH_DAVINCI_DM644x bool "DaVinci 644x based system" - select AINTC + select DAVINCI_AINTC select ARCH_DAVINCI_DMx config ARCH_DAVINCI_DM355 bool "DaVinci 355 based system" - select AINTC + select DAVINCI_AINTC select ARCH_DAVINCI_DMx config ARCH_DAVINCI_DM646x bool "DaVinci 646x based system" - select AINTC + select DAVINCI_AINTC select ARCH_DAVINCI_DMx config ARCH_DAVINCI_DA830 @@ -49,7 +46,7 @@ config ARCH_DAVINCI_DA8XX config ARCH_DAVINCI_DM365 bool "DaVinci 365 based system" - select AINTC + select DAVINCI_AINTC select ARCH_DAVINCI_DMx comment "DaVinci Board Type" diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile index 93d271b4d84b..983865a99616 100644 --- a/arch/arm/mach-davinci/Makefile +++ b/arch/arm/mach-davinci/Makefile @@ -18,7 +18,6 @@ obj-$(CONFIG_ARCH_DAVINCI_DM365) += dm365.o devices.o obj-$(CONFIG_ARCH_DAVINCI_DA830) += da830.o devices-da8xx.o usb-da8xx.o obj-$(CONFIG_ARCH_DAVINCI_DA850) += da850.o devices-da8xx.o usb-da8xx.o -obj-$(CONFIG_AINTC) += irq.o obj-$(CONFIG_CP_INTC) += cp_intc.o # Board specific diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c deleted file mode 100644 index 810ccc4fe476..000000000000 --- a/arch/arm/mach-davinci/irq.c +++ /dev/null @@ -1,163 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -// -// Copyright (C) 2006, 2019 Texas Instruments. -// -// Interrupt handler for DaVinci boards. - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/irqchip/irq-davinci-aintc.h> -#include <linux/io.h> -#include <linux/irqdomain.h> - -#include <asm/exception.h> - -#define DAVINCI_AINTC_FIQ_REG0 0x00 -#define DAVINCI_AINTC_FIQ_REG1 0x04 -#define DAVINCI_AINTC_IRQ_REG0 0x08 -#define DAVINCI_AINTC_IRQ_REG1 0x0c -#define DAVINCI_AINTC_IRQ_IRQENTRY 0x14 -#define DAVINCI_AINTC_IRQ_ENT_REG0 0x18 -#define DAVINCI_AINTC_IRQ_ENT_REG1 0x1c -#define DAVINCI_AINTC_IRQ_INCTL_REG 0x20 -#define DAVINCI_AINTC_IRQ_EABASE_REG 0x24 -#define DAVINCI_AINTC_IRQ_INTPRI0_REG 0x30 -#define DAVINCI_AINTC_IRQ_INTPRI7_REG 0x4c - -static void __iomem *davinci_aintc_base; -static struct irq_domain *davinci_aintc_irq_domain; - -static inline void davinci_aintc_writel(unsigned long value, int offset) -{ - writel_relaxed(value, davinci_aintc_base + offset); -} - -static inline unsigned long davinci_aintc_readl(int offset) -{ - return readl_relaxed(davinci_aintc_base + offset); -} - -static __init void -davinci_aintc_setup_gc(void __iomem *base, - unsigned int irq_start, unsigned int num) -{ - struct irq_chip_generic *gc; - struct irq_chip_type *ct; - - gc = irq_get_domain_generic_chip(davinci_aintc_irq_domain, irq_start); - gc->reg_base = base; - gc->irq_base = irq_start; - - ct = gc->chip_types; - ct->chip.irq_ack = irq_gc_ack_set_bit; - ct->chip.irq_mask = irq_gc_mask_clr_bit; - ct->chip.irq_unmask = irq_gc_mask_set_bit; - - ct->regs.ack = DAVINCI_AINTC_IRQ_REG0; - ct->regs.mask = DAVINCI_AINTC_IRQ_ENT_REG0; - irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE, - IRQ_NOREQUEST | IRQ_NOPROBE, 0); -} - -static asmlinkage void __exception_irq_entry -davinci_aintc_handle_irq(struct pt_regs *regs) -{ - int irqnr = davinci_aintc_readl(DAVINCI_AINTC_IRQ_IRQENTRY); - - /* - * Use the formula for entry vector index generation from section - * 8.3.3 of the manual. - */ - irqnr >>= 2; - irqnr -= 1; - - handle_domain_irq(davinci_aintc_irq_domain, irqnr, regs); -} - -/* ARM Interrupt Controller Initialization */ -void __init davinci_aintc_init(const struct davinci_aintc_config *config) -{ - unsigned int irq_off, reg_off, prio, shift; - void __iomem *req; - int ret, irq_base; - const u8 *prios; - - req = request_mem_region(config->reg.start, - resource_size(&config->reg), - "davinci-cp-intc"); - if (!req) { - pr_err("%s: register range busy\n", __func__); - return; - } - - davinci_aintc_base = ioremap(config->reg.start, - resource_size(&config->reg)); - if (!davinci_aintc_base) { - pr_err("%s: unable to ioremap register range\n", __func__); - return; - } - - /* Clear all interrupt requests */ - davinci_aintc_writel(~0x0, DAVINCI_AINTC_FIQ_REG0); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_FIQ_REG1); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_IRQ_REG0); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_IRQ_REG1); - - /* Disable all interrupts */ - davinci_aintc_writel(0x0, DAVINCI_AINTC_IRQ_ENT_REG0); - davinci_aintc_writel(0x0, DAVINCI_AINTC_IRQ_ENT_REG1); - - /* Interrupts disabled immediately, IRQ entry reflects all */ - davinci_aintc_writel(0x0, DAVINCI_AINTC_IRQ_INCTL_REG); - - /* we don't use the hardware vector table, just its entry addresses */ - davinci_aintc_writel(0, DAVINCI_AINTC_IRQ_EABASE_REG); - - /* Clear all interrupt requests */ - davinci_aintc_writel(~0x0, DAVINCI_AINTC_FIQ_REG0); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_FIQ_REG1); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_IRQ_REG0); - davinci_aintc_writel(~0x0, DAVINCI_AINTC_IRQ_REG1); - - prios = config->prios; - for (reg_off = DAVINCI_AINTC_IRQ_INTPRI0_REG; - reg_off <= DAVINCI_AINTC_IRQ_INTPRI7_REG; reg_off += 4) { - for (shift = 0, prio = 0; shift < 32; shift += 4, prios++) - prio |= (*prios & 0x07) << shift; - davinci_aintc_writel(prio, reg_off); - } - - irq_base = irq_alloc_descs(-1, 0, config->num_irqs, 0); - if (irq_base < 0) { - pr_err("%s: unable to allocate interrupt descriptors: %d\n", - __func__, irq_base); - return; - } - - davinci_aintc_irq_domain = irq_domain_add_legacy(NULL, - config->num_irqs, irq_base, 0, - &irq_domain_simple_ops, NULL); - if (!davinci_aintc_irq_domain) { - pr_err("%s: unable to create interrupt domain\n", __func__); - return; - } - - ret = irq_alloc_domain_generic_chips(davinci_aintc_irq_domain, 32, 1, - "AINTC", handle_edge_irq, - IRQ_NOREQUEST | IRQ_NOPROBE, 0, 0); - if (ret) { - pr_err("%s: unable to allocate generic irq chips for domain\n", - __func__); - return; - } - - for (irq_off = 0, reg_off = 0; - irq_off < config->num_irqs; - irq_off += 32, reg_off += 0x04) - davinci_aintc_setup_gc(davinci_aintc_base + reg_off, - irq_base + irq_off, 32); - - set_handle_irq(davinci_aintc_handle_irq); -} |