From: sboyd@codeaurora•org (Stephen Boyd)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 07/10] opp: Add OPP sharing information to OPP library
Date: Mon, 20 Jul 2015 10:46:27 -0700 [thread overview]
Message-ID: <55AD33F3.4000302@codeaurora.org> (raw)
In-Reply-To: <20150718063304.GD11802@linux>
On 07/17/2015 11:33 PM, Viresh Kumar wrote:
> From: Viresh Kumar <viresh.kumar@linaro•org>
> Date: Wed, 11 Feb 2015 16:16:28 +0800
> Subject: [PATCH] opp: Add OPP sharing information to OPP library
>
> An opp can be shared by multiple devices, for example its very common
> for CPUs to share the OPPs, i.e. when they share clock/voltage rails.
>
> This patch adds support of shared OPPs to the OPP library.
>
> Instead of a single device, dev_opp will not contain a list of devices
> that use it. It also senses if the device (we are trying to initialize
> OPPs for) shares OPPs with a device added earlier and in that case we
> update the list of devices managed by OPPs instead of duplicating OPPs
> again.
>
> The same infrastructure will be used for the old OPP bindings, with
> later patches.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro•org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora•org>
> +static struct device_opp *_managed_opp(const struct device_node *np)
> +{
> + struct device_opp *dev_opp;
> +
> + list_for_each_entry_rcu(dev_opp, &dev_opp_list, node)
> + if (dev_opp->np == np) {
> + /*
> + * Multiple devices can point to the same OPP table and
> + * so will have same node-pointer, np.
> + *
> + * But the OPPs will be considered as shared only if the
> + * OPP table contains a "opp-shared" property.
> + */
> + if (dev_opp->shared_opp)
> + return dev_opp;
> + else
> + return NULL;
> +
The janitors will probably find this and say that it could be simplified
to an if () and a return without the else.
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2015-07-20 17:46 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-15 11:57 [PATCH 00/10] OPP: Add code to support operating-points-v2 bindings Viresh Kumar
2015-06-15 11:57 ` [PATCH 01/10] opp: Relocate few routines Viresh Kumar
2015-07-02 1:25 ` Stephen Boyd
2015-07-24 17:08 ` Bartlomiej Zolnierkiewicz
2015-06-15 11:57 ` [PATCH 02/10] OPP: Create _remove_device_opp() for freeing dev_opp Viresh Kumar
2015-07-02 1:25 ` Stephen Boyd
2015-07-24 17:13 ` Bartlomiej Zolnierkiewicz
2015-06-15 11:57 ` [PATCH 03/10] OPP: Allocate dev_opp from _add_device_opp() Viresh Kumar
2015-07-02 1:02 ` Stephen Boyd
2015-07-02 6:24 ` Viresh Kumar
2015-07-02 23:46 ` Stephen Boyd
2015-07-03 6:45 ` Viresh Kumar
2015-07-06 22:31 ` Stephen Boyd
2015-07-24 17:25 ` Bartlomiej Zolnierkiewicz
2015-06-15 11:57 ` [PATCH 04/10] OPP: Break _opp_add_dynamic() into smaller functions Viresh Kumar
2015-07-24 17:42 ` Bartlomiej Zolnierkiewicz
2015-06-15 11:57 ` [PATCH 05/10] opp: Add support to parse "operating-points-v2" bindings Viresh Kumar
2015-07-02 1:13 ` Stephen Boyd
2015-07-02 6:38 ` Viresh Kumar
2015-07-02 16:07 ` Stephen Boyd
2015-07-03 6:08 ` Viresh Kumar
2015-07-08 13:41 ` Bartlomiej Zolnierkiewicz
2015-07-09 5:18 ` Viresh Kumar
2015-07-24 18:02 ` Bartlomiej Zolnierkiewicz
2015-07-27 3:14 ` Viresh Kumar
2015-07-27 3:02 ` Viresh Kumar
2015-07-28 23:03 ` Stephen Boyd
2015-07-29 6:53 ` Viresh Kumar
2015-07-30 10:17 ` Viresh Kumar
2015-06-15 11:57 ` [PATCH 06/10] OPP: Add clock-latency-ns support Viresh Kumar
2015-07-02 1:27 ` Stephen Boyd
2015-06-15 11:57 ` [PATCH 07/10] opp: Add OPP sharing information to OPP library Viresh Kumar
2015-07-17 22:51 ` Stephen Boyd
2015-07-18 6:33 ` Viresh Kumar
2015-07-20 17:46 ` Stephen Boyd [this message]
2015-07-21 2:18 ` Viresh Kumar
2015-07-27 3:20 ` Viresh Kumar
2015-06-15 11:57 ` [PATCH 08/10] OPP: Add support for opp-suspend Viresh Kumar
2015-07-17 19:22 ` Stephen Boyd
2015-07-18 6:32 ` Viresh Kumar
2015-06-15 11:57 ` [PATCH 09/10] opp: Add helpers for initializing CPU OPPs Viresh Kumar
2015-06-15 11:57 ` [PATCH 10/10] cpufreq-dt: Add support for operating-points-v2 bindings Viresh Kumar
2015-07-09 16:13 ` Bartlomiej Zolnierkiewicz
2015-07-09 16:44 ` Bartlomiej Zolnierkiewicz
2015-07-15 2:59 ` Viresh Kumar
2015-06-30 16:44 ` [PATCH 00/10] OPP: Add code to support " Viresh Kumar
2015-07-17 2:36 ` Viresh Kumar
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