From: gregory.clement@free-electrons•com (Gregory CLEMENT)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 11/12] cpuidle: mvebu: Add initial cpu idle support for Armada 370/XP SoC
Date: Fri, 23 Aug 2013 10:41:53 +0200 [thread overview]
Message-ID: <52172051.2030505@free-electrons.com> (raw)
In-Reply-To: <1377240797-4047-12-git-send-email-gregory.clement@free-electrons.com>
On 23/08/2013 08:53, Gregory CLEMENT wrote:
> Add wfi/cpu idle/cpu deep idle power states support for Armada XP SoC.
>
> All the latencies and the power consumption values used at the
> "armada_370_xp_idle_driver" structure are preliminary and will be
> modified in the future after running some measurements and analysis.
>
> Based on the work of Nadav Haklai.
Atsushi Yamagata reported me an kernel crash when pm_support=off.
Indeed I have lost a small chunk of code during my code reshaping.
The following code will fix the issue. I will add it in the next
version of this series.
[...]
> +
> + if (pm_support == WFI)
> + pr_info(" (WFI)\n");
> + else if (pm_support == MV_CPU_IDLE)
> + pr_info(" (CPU_IDLE)\n");
> + else if (pm_support == MV_CPU_DEEP_IDLE)
> + pr_info(" (CPU_DEEP_IDLE)\n");
> + else
> + pr_info(" (DISABLED)\n");
Will be replaced by
+ else {
+ pr_info(" (DISABLED)\n");
+ return; /* do not register the cpuidle device */
+ }
> +
> + armada_370_xp_idle_driver.state_count = pm_support + 1;
> +
> + return cpuidle_register(&armada_370_xp_idle_driver, NULL);
> +}
> +
--
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2013-08-23 8:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-23 6:53 [PATCH 00/12] CPU idle for Armada XP Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 01/12] ARM: PJ4B: Add cpu_suspend/cpu_resume hooks for PJ4B Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 02/12] ARM: mvebu: ll_set_cpu_coherent no more uses the coherency address as parameter Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 03/12] ARM: mvebu: ll_set_cpu_coherent always uses the current CPU Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 04/12] ARM: mvebu: Remove the unused argument of set_cpu_coherent() Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 05/12] ARM: mvebu: Makes ll_set_cpu_coherent() more configurable Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 06/12] ARM: mvebu: Low level functions to disbale cache snooping Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 07/12] ARM: mvebu: Add a new set of registers for pmsu Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 08/12] ARM: mvebu: Allow to power down L2 cache controller in idle mode Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 09/12] ARM: mvebu: Add the PMSU related part of the cpu idle functions Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 10/12] ARM: mvebu: Set the start address of a CPU in a separate function Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 11/12] cpuidle: mvebu: Add initial cpu idle support for Armada 370/XP SoC Gregory CLEMENT
2013-08-23 8:41 ` Gregory CLEMENT [this message]
2013-08-27 3:28 ` Kevin Hilman
2013-08-28 6:37 ` Gregory CLEMENT
2013-08-23 6:53 ` [PATCH 12/12] ARM: dts: mvebu: Add a new set of registers to the PMSU node Gregory CLEMENT
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