linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Yash Shah <yash.shah@sifive.com>
To: "linus.walleij@linaro.org" <linus.walleij@linaro.org>,
	"bgolaszewski@baylibre.com" <bgolaszewski@baylibre.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"palmer@dabbelt.com" <palmer@dabbelt.com>,
	"Paul Walmsley ( Sifive)" <paul.walmsley@sifive.com>
Cc: "aou@eecs.berkeley.edu" <aou@eecs.berkeley.edu>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"jason@lakedaemon.net" <jason@lakedaemon.net>,
	"maz@kernel.org" <maz@kernel.org>,
	"bmeng.cn@gmail.com" <bmeng.cn@gmail.com>,
	"atish.patra@wdc.com" <atish.patra@wdc.com>,
	Sagar Kadam <sagar.kadam@sifive.com>,
	"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-riscv@lists.infradead.org"
	<linux-riscv@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Sachin Ghadi <sachin.ghadi@sifive.com>,
	Yash Shah <yash.shah@sifive.com>
Subject: [PATCH v2 1/5] genirq: introduce irq_domain_translate_onecell
Date: Wed, 20 Nov 2019 06:59:21 +0000	[thread overview]
Message-ID: <1574233128-28114-2-git-send-email-yash.shah@sifive.com> (raw)
In-Reply-To: <1574233128-28114-1-git-send-email-yash.shah@sifive.com>

Add a new function irq_domain_translate_onecell() that is to be used as
the translate function in struct irq_domain_ops for the v2 IRQ API.

Signed-off-by: Yash Shah <yash.shah@sifive.com>
---
 include/linux/irqdomain.h |  5 +++++
 kernel/irq/irqdomain.c    | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 583e7ab..cad9eb8 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -426,6 +426,11 @@ int irq_domain_translate_twocell(struct irq_domain *d,
 				 unsigned long *out_hwirq,
 				 unsigned int *out_type);
 
+int irq_domain_translate_onecell(struct irq_domain *d,
+				 struct irq_fwspec *fwspec,
+				 unsigned long *out_hwirq,
+				 unsigned int *out_type);
+
 /* IPI functions */
 int irq_reserve_ipi(struct irq_domain *domain, const struct cpumask *dest);
 int irq_destroy_ipi(unsigned int irq, const struct cpumask *dest);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 132672b..6972a48 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -987,6 +987,26 @@ const struct irq_domain_ops irq_domain_simple_ops = {
 EXPORT_SYMBOL_GPL(irq_domain_simple_ops);
 
 /**
+ * irq_domain_translate_onecell() - Generic translate for direct one cell
+ * bindings
+ *
+ * Device Tree IRQ specifier translation function which works with one cell
+ * bindings where the cell values map directly to the hwirq number.
+ */
+int irq_domain_translate_onecell(struct irq_domain *d,
+				 struct irq_fwspec *fwspec,
+				 unsigned long *out_hwirq,
+				 unsigned int *out_type)
+{
+	if (WARN_ON(fwspec->param_count < 1))
+		return -EINVAL;
+	*out_hwirq = fwspec->param[0];
+	*out_type = IRQ_TYPE_NONE;
+	return 0;
+}
+EXPORT_SYMBOL_GPL(irq_domain_translate_onecell);
+
+/**
  * irq_domain_translate_twocell() - Generic translate for direct two cell
  * bindings
  *
-- 
2.7.4


  reply	other threads:[~2019-11-20  6:59 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-20  6:59 [PATCH v2 0/5] GPIO & Hierarchy IRQ support for HiFive Unleashed Yash Shah
2019-11-20  6:59 ` Yash Shah [this message]
2019-11-20  9:34   ` [PATCH v2 1/5] genirq: introduce irq_domain_translate_onecell Thomas Gleixner
2019-11-20 10:24     ` Marc Zyngier
2019-11-20 10:48       ` Thomas Gleixner
2019-11-20 10:38   ` Marc Zyngier
2019-11-21  8:35     ` Yash Shah
2019-11-21  8:55       ` Yash Shah
2019-11-21  9:20         ` Marc Zyngier
2019-11-20  6:59 ` [PATCH v2 2/5] irqchip: sifive: Support hierarchy irq domain Yash Shah
2019-11-22 10:17   ` Marc Zyngier
2019-11-20  6:59 ` [PATCH v2 3/5] gpio: sifive: Add DT documentation for SiFive GPIO Yash Shah
2019-11-20  6:59 ` [PATCH v2 4/5] gpio: sifive: Add GPIO driver for SiFive SoCs Yash Shah
2019-11-20 10:01   ` Bartosz Golaszewski
2019-11-21  8:32     ` Yash Shah
2019-11-20  6:59 ` [PATCH v2 5/5] riscv: dts: Add DT support for SiFive FU540 GPIO driver Yash Shah
2019-11-20  9:14   ` Andreas Schwab
2019-11-21  8:26     ` Yash Shah

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1574233128-28114-2-git-send-email-yash.shah@sifive.com \
    --to=yash.shah@sifive.com \
    --cc=aou@eecs.berkeley.edu \
    --cc=atish.patra@wdc.com \
    --cc=bgolaszewski@baylibre.com \
    --cc=bmeng.cn@gmail.com \
    --cc=devicetree@vger.kernel.org \
    --cc=jason@lakedaemon.net \
    --cc=linus.walleij@linaro.org \
    --cc=linux-gpio@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=mark.rutland@arm.com \
    --cc=maz@kernel.org \
    --cc=palmer@dabbelt.com \
    --cc=paul.walmsley@sifive.com \
    --cc=robh+dt@kernel.org \
    --cc=sachin.ghadi@sifive.com \
    --cc=sagar.kadam@sifive.com \
    --cc=tglx@linutronix.de \
    --subject='Re: [PATCH v2 1/5] genirq: introduce irq_domain_translate_onecell' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).