From patchwork Fri Apr 12 14:03:22 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnd Bergmann X-Patchwork-Id: 2435881 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 2BE04DF2A1 for ; Fri, 12 Apr 2013 14:03:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751586Ab3DLODz (ORCPT ); Fri, 12 Apr 2013 10:03:55 -0400 Received: from moutng.kundenserver.de ([212.227.17.10]:49298 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751556Ab3DLODz (ORCPT ); Fri, 12 Apr 2013 10:03:55 -0400 Received: from wuerfel.lan (HSI-KBW-095-208-002-043.hsi5.kabel-badenwuerttemberg.de [95.208.2.43]) by mrelayeu.kundenserver.de (node=mrbap0) with ESMTP (Nemesis) id 0Mg0KT-1UEsU024Q9-00NRWU; Fri, 12 Apr 2013 16:03:37 +0200 From: Arnd Bergmann To: Kukjin Kim Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Chanho Park , Tushar Behera , Tomasz Figa , Thomas Abraham , Kyungmin Park , Arnd Bergmann , Thomas Gleixner Subject: [PATCH 4/7] irqchip: exynos: pass max combiner number to combiner_init Date: Fri, 12 Apr 2013 16:03:22 +0200 Message-Id: <1365775405-115297-5-git-send-email-arnd@arndb.de> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1365775405-115297-1-git-send-email-arnd@arndb.de> References: <1365775405-115297-1-git-send-email-arnd@arndb.de> X-Provags-ID: V02:K0:vFTUuhFcCRRcez2ynZ6nBclJ8KrZc+a5S8Cy8/sB0TA eL3AXQ9qBhNUd8wQsD4IqPPPprgaS1iP/M5e2dbmyeTi/1Lxwk tPOsUPiV9zJ8opOyZPXgfyR0o8ZftHtHeYTPcyB4RR9waJ9G/k cxhOw1SnVllf7w1XKq2mB614kE62CAi5uP0qMSUOE2nABPWugJ dAiUiqNMHKoCmrQQDsokdOd09Eu8EZSJxd6eQ2t6fZTT7h6Tlo JFqlqZZCgnzbTq2VXOUZ4/FqbDF0OO+a/JqOREDuaDE8zoEjzl pFYgkRj63/vkmngVPIaNmtR+yVkzR4qXT1QAUy/g42f5ufDGEJ jB/iTILnI2en2P3FQrsCERy37XW/WBR+lf4gbM09B Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org We can find out the number of combined IRQs from the device tree, but in case of ATAGS boot, the driver currently uses hardcoded values based on the SoC type. We can't do that in general for a multiplatform kernel, so let's instead pass this information from platform code directly in case of ATAGS boot. Signed-off-by: Arnd Bergmann Cc: Thomas Gleixner --- arch/arm/mach-exynos/common.c | 15 ++++++++++++- arch/arm/mach-exynos/common.h | 3 ++- drivers/irqchip/exynos-combiner.c | 46 ++++++++++++++------------------------- 3 files changed, 32 insertions(+), 32 deletions(-) diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 59cb8fe..ecdd212 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -417,6 +417,19 @@ void __init exynos_init_time(void) } } +static unsigned int max_combiner_nr(void) +{ + if (soc_is_exynos5250()) + return EXYNOS5_MAX_COMBINER_NR; + else if (soc_is_exynos4412()) + return EXYNOS4412_MAX_COMBINER_NR; + else if (soc_is_exynos4212()) + return EXYNOS4212_MAX_COMBINER_NR; + else + return EXYNOS4210_MAX_COMBINER_NR; +} + + void __init exynos4_init_irq(void) { unsigned int gic_bank_offset; @@ -431,7 +444,7 @@ void __init exynos4_init_irq(void) #endif if (!of_have_populated_dt()) - combiner_init(S5P_VA_COMBINER_BASE, NULL); + combiner_init(S5P_VA_COMBINER_BASE, NULL, max_combiner_nr()); /* * The parameters of s5p_init_irq() are for VIC init. diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h index 9717d0f..4ba8cbe 100644 --- a/arch/arm/mach-exynos/common.h +++ b/arch/arm/mach-exynos/common.h @@ -69,7 +69,8 @@ void exynos4212_register_clocks(void); #endif struct device_node; -void combiner_init(void __iomem *combiner_base, struct device_node *np); +void combiner_init(void __iomem *combiner_base, struct device_node *np, + unsigned int max_nr); extern struct smp_operations exynos_smp_ops; diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c index e8501db..d868383 100644 --- a/drivers/irqchip/exynos-combiner.c +++ b/drivers/irqchip/exynos-combiner.c @@ -25,6 +25,8 @@ #define COMBINER_ENABLE_CLEAR 0x4 #define COMBINER_INT_STATUS 0xC +#define IRQ_IN_COMBINER 8 + static DEFINE_SPINLOCK(irq_controller_lock); struct combiner_chip_data { @@ -112,23 +114,9 @@ static struct irq_chip combiner_chip = { #endif }; -static unsigned int max_combiner_nr(void) -{ - if (soc_is_exynos5250()) - return EXYNOS5_MAX_COMBINER_NR; - else if (soc_is_exynos4412()) - return EXYNOS4412_MAX_COMBINER_NR; - else if (soc_is_exynos4212()) - return EXYNOS4212_MAX_COMBINER_NR; - else - return EXYNOS4210_MAX_COMBINER_NR; -} - static void __init combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq) { - if (combiner_nr >= max_combiner_nr()) - BUG(); if (irq_set_handler_data(irq, &combiner_data[combiner_nr]) != 0) BUG(); irq_set_chained_handler(irq, combiner_handle_cascade_irq); @@ -139,7 +127,7 @@ static void __init combiner_init_one(unsigned int combiner_nr, { combiner_data[combiner_nr].base = base; combiner_data[combiner_nr].irq_offset = irq_find_mapping( - combiner_irq_domain, combiner_nr * MAX_IRQ_IN_COMBINER); + combiner_irq_domain, combiner_nr * IRQ_IN_COMBINER); combiner_data[combiner_nr].irq_mask = 0xff << ((combiner_nr % 4) << 3); combiner_data[combiner_nr].parent_irq = irq; @@ -161,7 +149,7 @@ static int combiner_irq_domain_xlate(struct irq_domain *d, if (intsize < 2) return -EINVAL; - *out_hwirq = intspec[0] * MAX_IRQ_IN_COMBINER + intspec[1]; + *out_hwirq = intspec[0] * IRQ_IN_COMBINER + intspec[1]; *out_type = 0; return 0; @@ -209,22 +197,13 @@ static unsigned int exynos4x12_combiner_extra_irq(int group) } void __init combiner_init(void __iomem *combiner_base, - struct device_node *np) + struct device_node *np, + unsigned int max_nr) { int i, irq, irq_base; - unsigned int max_nr, nr_irq; + unsigned int nr_irq; - max_nr = max_combiner_nr(); - - if (np) { - if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) { - pr_info("%s: number of combiners not specified, " - "setting default as %d.\n", - __func__, max_nr); - } - } - - nr_irq = max_nr * MAX_IRQ_IN_COMBINER; + nr_irq = max_nr * IRQ_IN_COMBINER; irq_base = irq_alloc_descs(COMBINER_IRQ(0, 0), 1, nr_irq, 0); if (IS_ERR_VALUE(irq_base)) { @@ -258,6 +237,7 @@ static int __init combiner_of_init(struct device_node *np, struct device_node *parent) { void __iomem *combiner_base; + unsigned int max_nr = 20; combiner_base = of_iomap(np, 0); if (!combiner_base) { @@ -265,7 +245,13 @@ static int __init combiner_of_init(struct device_node *np, return -ENXIO; } - combiner_init(combiner_base, np); + if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) { + pr_info("%s: number of combiners not specified, " + "setting default as %d.\n", + __func__, max_nr); + } + + combiner_init(combiner_base, np, max_nr); return 0; }