From: Arnd Bergmann Date: Fri, 30 Sep 2022 13:39:51 +0000 (+0200) Subject: irqchip: remove davinci aintc driver X-Git-Tag: v6.6.17~5552^2~65 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa8dede4d0a0c6c36e361703af5726ef674e83f3;p=platform%2Fkernel%2Flinux-rpi.git irqchip: remove davinci aintc driver The aintc driver was used on Davinci DM3xx and DM64xx SoCs, all of which got dropped from Linux, so this driver is orphaned as well. Acked-by: Bartosz Golaszewski Acked-by: Marc Zyngier Signed-off-by: Arnd Bergmann --- diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index caa952c..d796831 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -136,11 +136,6 @@ config BRCMSTB_L2_IRQ select GENERIC_IRQ_CHIP select IRQ_DOMAIN -config DAVINCI_AINTC - bool - select GENERIC_IRQ_CHIP - select IRQ_DOMAIN - config DAVINCI_CP_INTC bool select GENERIC_IRQ_CHIP diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index 87b49a1..ffd945f 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -8,7 +8,6 @@ obj-$(CONFIG_ATH79) += irq-ath79-misc.o obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2835.o obj-$(CONFIG_ARCH_BCM2835) += irq-bcm2836.o obj-$(CONFIG_ARCH_ACTIONS) += irq-owl-sirq.o -obj-$(CONFIG_DAVINCI_AINTC) += irq-davinci-aintc.o obj-$(CONFIG_DAVINCI_CP_INTC) += irq-davinci-cp-intc.o obj-$(CONFIG_EXYNOS_IRQ_COMBINER) += exynos-combiner.o obj-$(CONFIG_FARADAY_FTINTC010) += irq-ftintc010.o diff --git a/drivers/irqchip/irq-davinci-aintc.c b/drivers/irqchip/irq-davinci-aintc.c deleted file mode 100644 index 123eb7b..0000000 --- a/drivers/irqchip/irq-davinci-aintc.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 -#include -#include -#include -#include -#include -#include - -#include - -#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; - - generic_handle_domain_irq(davinci_aintc_irq_domain, irqnr); -} - -/* 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); -}