From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 19 Sep 2017 03:01:43 +0200 (CEST) Received: from mail-qt0-x241.google.com ([IPv6:2607:f8b0:400d:c0d::241]:38009 "EHLO mail-qt0-x241.google.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23993543AbdISBAa35Qb- (ORCPT ); Tue, 19 Sep 2017 03:00:30 +0200 Received: by mail-qt0-x241.google.com with SMTP id f24so1426707qte.5 for ; Mon, 18 Sep 2017 18:00:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=47VLoFVfcT2CJeQ5++WDmMldt86rKmTC1LUYRtnBxrU=; b=qFvHb5wcCd29wlCfw6pvqocMVG+FKqUGmhsXZaDvFDonQaBhTHkjbmZ/aspCUIAsIl 2CUlwA1ESmkY2CLu+pSyb2R8zLWROBOYieSLWFKw+mL4Z8YF+S6XLSWFM9CXSzeKHbFX wuWdDdglvaOHEu6UxfhylZrpROXsaOj5xToLsz9QgyzeAGyNFtsu8OyaobkrJdkXSkAQ pSrWoMP4GElFkediYdD2IPEa8uFvuOOLqPuvHHJcvTRa/2OKOk6RN5nFG7V/Lgn3JT23 7MRHNDnTHnnQbrTjn2UV2mr4wLL8+a/W4MZEIU5QqmYwAs5m47sIXcqdNC78g6DGiXxa YxIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=47VLoFVfcT2CJeQ5++WDmMldt86rKmTC1LUYRtnBxrU=; b=juNjqWJfk2i3wiAIbl3FgY6OV1qi5UQK1r9p/c9RpSZw80TfouCSILtMRHwxkKeI6k 2fBNbzUp++OVSiKOIBsQYvf1gS4U0IQ9VFSMNGhBI3/7jKLAmlBUGlaxVG1owroHgqhH yMxRNzaENQbwGXvH6macJo7LFUV7AbkeNGfrw8ZFkRpIGRBmVVrTs6h6CJAvp93pXCh/ BxzPYG8FDK+DWe9heGkywKLc4TZF6eu012bBACuHxhc7cweAjgohxGih7uCD5GUs7uxU 6EffQeL6GtTkF+iwsMDFAzj+ufBsQj4Vsa9PVMLCOS4S6kQY0z2BEZbBCYkTyXAScdzN kX1Q== X-Gm-Message-State: AHPjjUhBsIsxdrzcphgW6Tjs7k4o6Cafr/cXECkQdGDefuK17A6pt6lj Trc4QuFtR9SHkA== X-Google-Smtp-Source: AOwi7QB6aB72ySjszYPFuI1ZbiBK3PeWjlrBiTFSOYNM2VoGYUM451CoyQxSBpj1mReldwswNcsdcg== X-Received: by 10.200.41.232 with SMTP id 37mr5462874qtt.47.1505782824489; Mon, 18 Sep 2017 18:00:24 -0700 (PDT) Received: from stb-bld-02.irv.broadcom.com ([192.19.255.250]) by smtp.gmail.com with ESMTPSA id x39sm6113273qtc.93.2017.09.18.18.00.22 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 18 Sep 2017 18:00:23 -0700 (PDT) From: Doug Berger To: Thomas Gleixner Cc: Doug Berger , Jason Cooper , Marc Zyngier , Rob Herring , Mark Rutland , Kevin Cernekee , Florian Fainelli , Brian Norris , Gregory Fong , bcm-kernel-feedback-list@broadcom.com, Marc Gonzalez , Mans Rullgard , Mason , Bartosz Golaszewski , Sebastian Frias , Boris Brezillon , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-mips@linux-mips.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 3/3] irqchip: brcmstb-l2: Add support for the BCM7271 L2 controller Date: Mon, 18 Sep 2017 18:00:00 -0700 Message-Id: <20170919010000.32072-4-opendmb@gmail.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170919010000.32072-1-opendmb@gmail.com> References: <20170919010000.32072-1-opendmb@gmail.com> Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 60070 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: opendmb@gmail.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips Add the initialization of the generic irq chip for the BCM7271 L2 interrupt controller. This controller only supports level interrupts and uses the "brcm,bcm7271-l2-intc" compatibility string. Acked-by: Rob Herring Signed-off-by: Doug Berger --- .../bindings/interrupt-controller/brcm,l2-intc.txt | 3 +- drivers/irqchip/irq-brcmstb-l2.c | 86 ++++++++++++++++------ 2 files changed, 66 insertions(+), 23 deletions(-) diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt index 448273a30a11..36df06c5c567 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt @@ -2,7 +2,8 @@ Broadcom Generic Level 2 Interrupt Controller Required properties: -- compatible: should be "brcm,l2-intc" +- compatible: should be "brcm,l2-intc" for latched interrupt controllers + should be "brcm,bcm7271-l2-intc" for level interrupt controllers - reg: specifies the base physical address and size of the registers - interrupt-controller: identifies the node as an interrupt controller - #interrupt-cells: specifies the number of cells needed to encode an diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c index 8d54cd7a090d..691d20eb0bec 100644 --- a/drivers/irqchip/irq-brcmstb-l2.c +++ b/drivers/irqchip/irq-brcmstb-l2.c @@ -31,13 +31,34 @@ #include #include -/* Register offsets in the L2 interrupt controller */ -#define CPU_STATUS 0x00 -#define CPU_SET 0x04 -#define CPU_CLEAR 0x08 -#define CPU_MASK_STATUS 0x0c -#define CPU_MASK_SET 0x10 -#define CPU_MASK_CLEAR 0x14 +struct brcmstb_intc_init_params { + irq_flow_handler_t handler; + int cpu_status; + int cpu_clear; + int cpu_mask_status; + int cpu_mask_set; + int cpu_mask_clear; +}; + +/* Register offsets in the L2 latched interrupt controller */ +static const struct brcmstb_intc_init_params l2_edge_intc_init = { + .handler = handle_edge_irq, + .cpu_status = 0x00, + .cpu_clear = 0x08, + .cpu_mask_status = 0x0c, + .cpu_mask_set = 0x10, + .cpu_mask_clear = 0x14 +}; + +/* Register offsets in the L2 level interrupt controller */ +static const struct brcmstb_intc_init_params l2_lvl_intc_init = { + .handler = handle_level_irq, + .cpu_status = 0x00, + .cpu_clear = -1, /* Register not present */ + .cpu_mask_status = 0x04, + .cpu_mask_set = 0x08, + .cpu_mask_clear = 0x0C +}; /* L2 intc private data structure */ struct brcmstb_l2_intc_data { @@ -128,7 +149,7 @@ static void brcmstb_l2_intc_resume(struct irq_data *d) struct brcmstb_l2_intc_data *b = gc->private; irq_gc_lock(gc); - if (ct->chip.irq_ack != irq_gc_noop) { + if (ct->chip.irq_ack) { /* Clear unmasked non-wakeup interrupts */ irq_reg_writel(gc, ~b->saved_mask & ~gc->wake_active, ct->regs.ack); @@ -141,7 +162,9 @@ static void brcmstb_l2_intc_resume(struct irq_data *d) } static int __init brcmstb_l2_intc_of_init(struct device_node *np, - struct device_node *parent) + struct device_node *parent, + const struct brcmstb_intc_init_params + *init_params) { unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN; struct brcmstb_l2_intc_data *data; @@ -163,12 +186,12 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, } /* Disable all interrupts by default */ - writel(0xffffffff, base + CPU_MASK_SET); + writel(0xffffffff, base + init_params->cpu_mask_set); /* Wakeup interrupts may be retained from S5 (cold boot) */ data->can_wake = of_property_read_bool(np, "brcm,irq-can-wake"); - if (!data->can_wake) - writel(0xffffffff, base + CPU_CLEAR); + if (!data->can_wake && (init_params->cpu_clear >= 0)) + writel(0xffffffff, base + init_params->cpu_clear); parent_irq = irq_of_parse_and_map(np, 0); if (!parent_irq) { @@ -193,7 +216,7 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, /* Allocate a single Generic IRQ chip for this node */ ret = irq_alloc_domain_generic_chips(data->domain, 32, 1, - np->full_name, handle_edge_irq, clr, 0, flags); + np->full_name, init_params->handler, clr, 0, flags); if (ret) { pr_err("failed to allocate generic irq chip\n"); goto out_free_domain; @@ -206,21 +229,26 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, data->gc = irq_get_domain_generic_chip(data->domain, 0); data->gc->reg_base = base; data->gc->private = data; - data->status_offset = CPU_STATUS; - data->mask_offset = CPU_MASK_STATUS; + data->status_offset = init_params->cpu_status; + data->mask_offset = init_params->cpu_mask_status; ct = data->gc->chip_types; - ct->chip.irq_ack = irq_gc_ack_set_bit; - ct->regs.ack = CPU_CLEAR; + if (init_params->cpu_clear >= 0) { + ct->regs.ack = init_params->cpu_clear; + ct->chip.irq_ack = irq_gc_ack_set_bit; + ct->chip.irq_mask_ack = brcmstb_l2_mask_and_ack; + } else { + /* No Ack - but still slightly more efficient to define this */ + ct->chip.irq_mask_ack = irq_gc_mask_disable_reg; + } ct->chip.irq_mask = irq_gc_mask_disable_reg; - ct->chip.irq_mask_ack = brcmstb_l2_mask_and_ack; - ct->regs.disable = CPU_MASK_SET; - ct->regs.mask = CPU_MASK_STATUS; + ct->regs.disable = init_params->cpu_mask_set; + ct->regs.mask = init_params->cpu_mask_status; ct->chip.irq_unmask = irq_gc_unmask_enable_reg; - ct->regs.enable = CPU_MASK_CLEAR; + ct->regs.enable = init_params->cpu_mask_clear; ct->chip.irq_suspend = brcmstb_l2_intc_suspend; ct->chip.irq_resume = brcmstb_l2_intc_resume; @@ -247,4 +275,18 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, kfree(data); return ret; } -IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_intc_of_init); + +int __init brcmstb_l2_edge_intc_of_init(struct device_node *np, + struct device_node *parent) +{ + return brcmstb_l2_intc_of_init(np, parent, &l2_edge_intc_init); +} +IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_edge_intc_of_init); + +int __init brcmstb_l2_lvl_intc_of_init(struct device_node *np, + struct device_node *parent) +{ + return brcmstb_l2_intc_of_init(np, parent, &l2_lvl_intc_init); +} +IRQCHIP_DECLARE(bcm7271_l2_intc, "brcm,bcm7271-l2-intc", + brcmstb_l2_lvl_intc_of_init); -- 2.14.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: opendmb@gmail.com (Doug Berger) Date: Mon, 18 Sep 2017 18:00:00 -0700 Subject: [PATCH v4 3/3] irqchip: brcmstb-l2: Add support for the BCM7271 L2 controller In-Reply-To: <20170919010000.32072-1-opendmb@gmail.com> References: <20170919010000.32072-1-opendmb@gmail.com> Message-ID: <20170919010000.32072-4-opendmb@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add the initialization of the generic irq chip for the BCM7271 L2 interrupt controller. This controller only supports level interrupts and uses the "brcm,bcm7271-l2-intc" compatibility string. Acked-by: Rob Herring Signed-off-by: Doug Berger --- .../bindings/interrupt-controller/brcm,l2-intc.txt | 3 +- drivers/irqchip/irq-brcmstb-l2.c | 86 ++++++++++++++++------ 2 files changed, 66 insertions(+), 23 deletions(-) diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt index 448273a30a11..36df06c5c567 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt @@ -2,7 +2,8 @@ Broadcom Generic Level 2 Interrupt Controller Required properties: -- compatible: should be "brcm,l2-intc" +- compatible: should be "brcm,l2-intc" for latched interrupt controllers + should be "brcm,bcm7271-l2-intc" for level interrupt controllers - reg: specifies the base physical address and size of the registers - interrupt-controller: identifies the node as an interrupt controller - #interrupt-cells: specifies the number of cells needed to encode an diff --git a/drivers/irqchip/irq-brcmstb-l2.c b/drivers/irqchip/irq-brcmstb-l2.c index 8d54cd7a090d..691d20eb0bec 100644 --- a/drivers/irqchip/irq-brcmstb-l2.c +++ b/drivers/irqchip/irq-brcmstb-l2.c @@ -31,13 +31,34 @@ #include #include -/* Register offsets in the L2 interrupt controller */ -#define CPU_STATUS 0x00 -#define CPU_SET 0x04 -#define CPU_CLEAR 0x08 -#define CPU_MASK_STATUS 0x0c -#define CPU_MASK_SET 0x10 -#define CPU_MASK_CLEAR 0x14 +struct brcmstb_intc_init_params { + irq_flow_handler_t handler; + int cpu_status; + int cpu_clear; + int cpu_mask_status; + int cpu_mask_set; + int cpu_mask_clear; +}; + +/* Register offsets in the L2 latched interrupt controller */ +static const struct brcmstb_intc_init_params l2_edge_intc_init = { + .handler = handle_edge_irq, + .cpu_status = 0x00, + .cpu_clear = 0x08, + .cpu_mask_status = 0x0c, + .cpu_mask_set = 0x10, + .cpu_mask_clear = 0x14 +}; + +/* Register offsets in the L2 level interrupt controller */ +static const struct brcmstb_intc_init_params l2_lvl_intc_init = { + .handler = handle_level_irq, + .cpu_status = 0x00, + .cpu_clear = -1, /* Register not present */ + .cpu_mask_status = 0x04, + .cpu_mask_set = 0x08, + .cpu_mask_clear = 0x0C +}; /* L2 intc private data structure */ struct brcmstb_l2_intc_data { @@ -128,7 +149,7 @@ static void brcmstb_l2_intc_resume(struct irq_data *d) struct brcmstb_l2_intc_data *b = gc->private; irq_gc_lock(gc); - if (ct->chip.irq_ack != irq_gc_noop) { + if (ct->chip.irq_ack) { /* Clear unmasked non-wakeup interrupts */ irq_reg_writel(gc, ~b->saved_mask & ~gc->wake_active, ct->regs.ack); @@ -141,7 +162,9 @@ static void brcmstb_l2_intc_resume(struct irq_data *d) } static int __init brcmstb_l2_intc_of_init(struct device_node *np, - struct device_node *parent) + struct device_node *parent, + const struct brcmstb_intc_init_params + *init_params) { unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN; struct brcmstb_l2_intc_data *data; @@ -163,12 +186,12 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, } /* Disable all interrupts by default */ - writel(0xffffffff, base + CPU_MASK_SET); + writel(0xffffffff, base + init_params->cpu_mask_set); /* Wakeup interrupts may be retained from S5 (cold boot) */ data->can_wake = of_property_read_bool(np, "brcm,irq-can-wake"); - if (!data->can_wake) - writel(0xffffffff, base + CPU_CLEAR); + if (!data->can_wake && (init_params->cpu_clear >= 0)) + writel(0xffffffff, base + init_params->cpu_clear); parent_irq = irq_of_parse_and_map(np, 0); if (!parent_irq) { @@ -193,7 +216,7 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, /* Allocate a single Generic IRQ chip for this node */ ret = irq_alloc_domain_generic_chips(data->domain, 32, 1, - np->full_name, handle_edge_irq, clr, 0, flags); + np->full_name, init_params->handler, clr, 0, flags); if (ret) { pr_err("failed to allocate generic irq chip\n"); goto out_free_domain; @@ -206,21 +229,26 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, data->gc = irq_get_domain_generic_chip(data->domain, 0); data->gc->reg_base = base; data->gc->private = data; - data->status_offset = CPU_STATUS; - data->mask_offset = CPU_MASK_STATUS; + data->status_offset = init_params->cpu_status; + data->mask_offset = init_params->cpu_mask_status; ct = data->gc->chip_types; - ct->chip.irq_ack = irq_gc_ack_set_bit; - ct->regs.ack = CPU_CLEAR; + if (init_params->cpu_clear >= 0) { + ct->regs.ack = init_params->cpu_clear; + ct->chip.irq_ack = irq_gc_ack_set_bit; + ct->chip.irq_mask_ack = brcmstb_l2_mask_and_ack; + } else { + /* No Ack - but still slightly more efficient to define this */ + ct->chip.irq_mask_ack = irq_gc_mask_disable_reg; + } ct->chip.irq_mask = irq_gc_mask_disable_reg; - ct->chip.irq_mask_ack = brcmstb_l2_mask_and_ack; - ct->regs.disable = CPU_MASK_SET; - ct->regs.mask = CPU_MASK_STATUS; + ct->regs.disable = init_params->cpu_mask_set; + ct->regs.mask = init_params->cpu_mask_status; ct->chip.irq_unmask = irq_gc_unmask_enable_reg; - ct->regs.enable = CPU_MASK_CLEAR; + ct->regs.enable = init_params->cpu_mask_clear; ct->chip.irq_suspend = brcmstb_l2_intc_suspend; ct->chip.irq_resume = brcmstb_l2_intc_resume; @@ -247,4 +275,18 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np, kfree(data); return ret; } -IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_intc_of_init); + +int __init brcmstb_l2_edge_intc_of_init(struct device_node *np, + struct device_node *parent) +{ + return brcmstb_l2_intc_of_init(np, parent, &l2_edge_intc_init); +} +IRQCHIP_DECLARE(brcmstb_l2_intc, "brcm,l2-intc", brcmstb_l2_edge_intc_of_init); + +int __init brcmstb_l2_lvl_intc_of_init(struct device_node *np, + struct device_node *parent) +{ + return brcmstb_l2_intc_of_init(np, parent, &l2_lvl_intc_init); +} +IRQCHIP_DECLARE(bcm7271_l2_intc, "brcm,bcm7271-l2-intc", + brcmstb_l2_lvl_intc_of_init); -- 2.14.1