From patchwork Mon Dec 10 13:56:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 10721311 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 139D01751 for ; Mon, 10 Dec 2018 13:57:07 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0701B2A7C0 for ; Mon, 10 Dec 2018 13:57:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EF8C62A7CC; Mon, 10 Dec 2018 13:57:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 867DE2A7C3 for ; Mon, 10 Dec 2018 13:57:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727583AbeLJN47 (ORCPT ); Mon, 10 Dec 2018 08:56:59 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:51418 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727579AbeLJN4l (ORCPT ); Mon, 10 Dec 2018 08:56:41 -0500 Received: by mail-wm1-f66.google.com with SMTP id s14so11057689wmh.1 for ; Mon, 10 Dec 2018 05:56:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=aP1EI+I5RgUtlWmE62M6UqtQRQysaLb2DRE3LkFnZds=; b=B09g4Xy82FcFY6jgXrd63y5ie+XkYuOwdxpt0/5QZadsPOp8zF+TIejqW9g4Fq11IV SbJgQic/R6nq0OCQCFH3w2poa+aYVltPDPvkGLQknZv1UY+pZ2SpMN1gbFpo4ZRJcsC9 HlP5jVVDKVTv54kxY6rWkPY8wk/Xa2JWkeRqM= 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:mime-version:content-transfer-encoding; bh=aP1EI+I5RgUtlWmE62M6UqtQRQysaLb2DRE3LkFnZds=; b=aUNQ0XZrv5+JeCxiakO3ioN4lU26zAcZQEWj5B9VbgdRAFmR6AeS+uuS/QFZOdU2Ns w6CQPCs9iD1+LTTIDv29fNpSM4KRTLpJ3QCT1V38t3zjZxvRcZvK2kbdckwPgaJodfg/ BKx15WBwOSpKO/qOgbccDKwzxEodBdGoqc3FCxDo94s40wWg65+d60758hx2y/DgIyDj EehGiGruVlycc8QkubuIk2/MGIIHh8aOBJHYXxiCaXtRGsPzdjgqoG0KqCzAi/FP7DQo Zdp11AAnq05ZJ5UjM7/MmAkIIKEzvdHHgV1q+j7HDlH5Pm3fWfF2sRqqWN9LiELGoWF8 J2WA== X-Gm-Message-State: AA+aEWYzTjUltvFTuYJk0Wa5BR1U9/Ri5af5PAXEyGRusCOis/oN8/oy HNsRk9LbJ2XoqiY1YMadBV+KSg== X-Google-Smtp-Source: AFSGD/WZBTBG1icveDhH8Y+l96Jh9BetzrqoXCGYGD8yAS9xngGZlcsfWU9Rgs8P7Dh9hlgNDmUR2w== X-Received: by 2002:a1c:8302:: with SMTP id f2mr11351091wmd.9.1544450199431; Mon, 10 Dec 2018 05:56:39 -0800 (PST) Received: from srini-hackbox.lan (cpc89974-aztw32-2-0-cust43.18-1.cable.virginm.net. [86.30.250.44]) by smtp.gmail.com with ESMTPSA id c14sm8612506wme.13.2018.12.10.05.56.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 10 Dec 2018 05:56:38 -0800 (PST) From: Srinivas Kandagatla To: marc.zyngier@arm.com Cc: sudeep.holla@arm.com, tglx@linutronix.de, jason@lakedaemon.net, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, rnayak@codeaurora.org, sboyd@kernel.org, bjorn.andersson@linaro.org, nicolas.dechesne@linaro.org, ctatlor97@gmail.com, vkoul@kernel.org, robh+dt@kernel.org, devicetree@vger.kernel.org, Srinivas Kandagatla Subject: [PATCH v5 2/4] irqchip/gic: common: add support to device tree based quirks Date: Mon, 10 Dec 2018 13:56:31 +0000 Message-Id: <20181210135633.30283-3-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20181210135633.30283-1-srinivas.kandagatla@linaro.org> References: <20181210135633.30283-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support to device tree based quirks based on device tree compatible string. Signed-off-by: Srinivas Kandagatla --- drivers/irqchip/irq-gic-common.c | 12 ++++++++++++ drivers/irqchip/irq-gic-common.h | 3 +++ drivers/irqchip/irq-gic-v3.c | 7 +++++++ 3 files changed, 22 insertions(+) diff --git a/drivers/irqchip/irq-gic-common.c b/drivers/irqchip/irq-gic-common.c index 01e673c680cd..3c93c6f4d1f1 100644 --- a/drivers/irqchip/irq-gic-common.c +++ b/drivers/irqchip/irq-gic-common.c @@ -36,6 +36,18 @@ void gic_set_kvm_info(const struct gic_kvm_info *info) gic_kvm_info = info; } +void gic_enable_of_quirks(const struct device_node *np, + const struct gic_quirk *quirks, void *data) +{ + for (; quirks->desc; quirks++) { + if (!of_device_is_compatible(np, quirks->compatible)) + continue; + if (quirks->init(data)) + pr_info("GIC: enabling workaround for %s\n", + quirks->desc); + } +} + void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks, void *data) { diff --git a/drivers/irqchip/irq-gic-common.h b/drivers/irqchip/irq-gic-common.h index 3919cd7c5285..97e58fb6c232 100644 --- a/drivers/irqchip/irq-gic-common.h +++ b/drivers/irqchip/irq-gic-common.h @@ -23,6 +23,7 @@ struct gic_quirk { const char *desc; + const char *compatible; bool (*init)(void *data); u32 iidr; u32 mask; @@ -35,6 +36,8 @@ void gic_dist_config(void __iomem *base, int gic_irqs, void gic_cpu_config(void __iomem *base, void (*sync_access)(void)); void gic_enable_quirks(u32 iidr, const struct gic_quirk *quirks, void *data); +void gic_enable_of_quirks(const struct device_node *np, + const struct gic_quirk *quirks, void *data); void gic_set_kvm_info(const struct gic_kvm_info *info); diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 29e9d47be97d..df1ff3b5836a 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -1271,6 +1271,11 @@ static void __init gic_of_setup_kvm_info(struct device_node *node) gic_set_kvm_info(&gic_v3_kvm_info); } +static const struct gic_quirk gic_quirks[] = { + { + } +}; + static int __init gic_of_init(struct device_node *node, struct device_node *parent) { void __iomem *dist_base; @@ -1318,6 +1323,8 @@ static int __init gic_of_init(struct device_node *node, struct device_node *pare if (of_property_read_u64(node, "redistributor-stride", &redist_stride)) redist_stride = 0; + gic_enable_of_quirks(node, gic_quirks, &gic_data); + err = gic_init_bases(dist_base, rdist_regs, nr_redist_regions, redist_stride, &node->fwnode); if (err)