From: Alexandre Courbot <acourbot@nvidia.com>
To: Stephen Warren <swarren@wwwdotorg.org>,
Thierry Reding <thierry.reding@gmail.com>,
Russell King <linux@arm.linux.org.uk>,
Tomasz Figa <t.figa@samsung.com>
Cc: Olof Johansson <olof@lixom.net>,
<linux-arm-kernel@lists.infradead.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<gnurou@gmail.com>, Alexandre Courbot <acourbot@nvidia.com>
Subject: [PATCH v2 4/6] ARM: firmware: add prepare_idle() operation
Date: Fri, 7 Feb 2014 13:35:04 +0900 [thread overview]
Message-ID: <1391747706-1847-5-git-send-email-acourbot@nvidia.com> (raw)
In-Reply-To: <1391747706-1847-1-git-send-email-acourbot@nvidia.com>
Some firmwares do not put the CPU into idle mode themselves, but still
need to be informed that the CPU is about to enter idle mode before this
happens. Add a prepare_idle() operation to the firmware_ops structure to
handle such cases.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
arch/arm/include/asm/firmware.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h
index 15631300c238..2c9f10df7568 100644
--- a/arch/arm/include/asm/firmware.h
+++ b/arch/arm/include/asm/firmware.h
@@ -22,6 +22,10 @@
*/
struct firmware_ops {
/*
+ * Inform the firmware we intend to enter CPU idle mode
+ */
+ int (*prepare_idle)(void);
+ /*
* Enters CPU idle mode
*/
int (*do_idle)(void);
--
1.8.5.3
next prev parent reply other threads:[~2014-02-07 4:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-07 4:35 [PATCH v2 0/6] ARM: firmware: improvements to Trusted Foundations support Alexandre Courbot
2014-02-07 4:35 ` [PATCH v2 1/6] ARM: trusted_foundations: fix vendor prefix typos Alexandre Courbot
2014-02-07 4:35 ` [PATCH v2 2/6] ARM: trusted_foundations: fallback when TF support is missing Alexandre Courbot
2014-02-07 4:35 ` [PATCH v2 3/6] ARM: firmware: enable Trusted Foundations by default Alexandre Courbot
2014-02-07 4:35 ` Alexandre Courbot [this message]
2014-02-13 11:01 ` [PATCH v2 4/6] ARM: firmware: add prepare_idle() operation Tomasz Figa
2014-02-13 16:37 ` Stephen Warren
2014-02-14 5:16 ` Alexandre Courbot
2014-02-14 10:42 ` Tomasz Figa
2014-02-07 4:35 ` [PATCH v2 5/6] ARM: trusted_foundations: implement prepare_idle() Alexandre Courbot
2014-02-07 4:35 ` [PATCH v2 6/6] ARM: tegra: cpuidle: use firmware for power down Alexandre Courbot
2014-02-12 1:36 ` Olof Johansson
2014-02-12 1:56 ` Alexandre Courbot
2014-02-12 2:43 ` [PATCH v3] " Alexandre Courbot
2014-02-12 20:04 ` Olof Johansson
2014-02-12 1:38 ` [PATCH v2 0/6] ARM: firmware: improvements to Trusted Foundations support Olof Johansson
2014-02-12 20:07 ` Stephen Warren
2014-02-18 20:56 ` Stephen Warren
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