From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
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, srini@kernel.org,
bjorn.andersson@linaro.org, nicolas.dechesne@linaro.org,
ctatlor97@gmail.com, vkoul@kernel.org,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [RFC PATCH v3 2/4] irqchip/gic: common: add support to device tree based quirks
Date: Mon, 12 Nov 2018 10:33:38 +0000 [thread overview]
Message-ID: <20181112103340.24702-3-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20181112103340.24702-1-srinivas.kandagatla@linaro.org>
This patch adds support to device tree based quirks based on
device tree compatible string.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
drivers/irqchip/irq-gic-common.c | 12 ++++++++++++
drivers/irqchip/irq-gic-common.h | 3 +++
2 files changed, 15 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);
--
2.19.1
next prev parent reply other threads:[~2018-11-12 10:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-12 10:33 [RFC PATCH v3 0/4] irqchip/gic-v3: Add support to DT based quirk for msm8996 Srinivas Kandagatla
2018-11-12 10:33 ` [RFC PATCH v3 1/4] dt-bindings/gic-v3: Add msm8996 compatible string Srinivas Kandagatla
2018-11-12 10:33 ` Srinivas Kandagatla [this message]
2018-11-12 10:33 ` [RFC PATCH v3 3/4] irqchip: gic-v3: Add quirk for msm8996 secured registers Srinivas Kandagatla
2018-11-28 23:33 ` Bjorn Andersson
2018-11-29 7:14 ` Marc Zyngier
2018-11-29 14:10 ` Srinivas Kandagatla
2018-12-07 18:30 ` Marc Zyngier
2018-11-12 10:33 ` [RFC PATCH v3 4/4] arm64: dts: add msm8996 compatible to gicv3 Srinivas Kandagatla
2018-12-07 18:21 ` Marc Zyngier
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