From: Sudeep Holla <sudeep.holla@arm.com>
To: "Sajjan, Vikas C" <vikas.cha.sajjan@hpe.com>
Cc: "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Sudeep Holla <sudeep.holla@arm.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Lakshminarasimha, Sunil Vishwanathpur" <sunil.vl@hpe.com>,
Prashanth Prakash <pprakash@codeaurora.org>,
Ashwin Chaugule <ashwin.chaugule@linaro.org>,
Al Stone <al.stone@linaro.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5 4/5] arm64: add support for ACPI Low Power Idle(LPI)
Date: Mon, 13 Jun 2016 10:40:20 +0100 [thread overview]
Message-ID: <575E7F84.2000106@arm.com> (raw)
In-Reply-To: <DF4PR84MB0041D17321244DFB84979A84D9530@DF4PR84MB0041.NAMPRD84.PROD.OUTLOOK.COM>
On 13/06/16 05:47, Sajjan, Vikas C wrote:
> Hi Sudeep,
>
[...]
> --- a/drivers/firmware/psci.c
> +++ b/drivers/firmware/psci.c
> @@ -13,6 +13,7 @@
>
> #define pr_fmt(fmt) "psci: " fmt
>
> +#include <linux/acpi.h>
> #include <linux/arm-smccc.h>
> #include <linux/cpuidle.h>
> #include <linux/errno.h>
> @@ -310,11 +311,66 @@ static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
> return ret;
> }
>
> +#ifdef CONFIG_ACPI
> +#include <acpi/processor.h>
> +
> +static int __maybe_unused psci_acpi_cpu_init_idle(unsigned int cpu) {
> + int i, count;
> + u32 *psci_states;
> + struct acpi_processor *pr;
> + struct acpi_lpi_state *lpi;
> +
> + pr = per_cpu(processors, cpu);
> + if (unlikely(!pr || !pr->flags.has_lpi))
>
> Any particular reason for _not_ considering CST flag here.
> Or you are planning to add CST support in some other patch set.
>
Are you referring the old C-state objects ? We don't support them on
ARM64. Only LPIs are support. The ARM FFH is not defined for CST, only
for LPIs.
--
Regards,
Sudeep
WARNING: multiple messages have this Message-ID (diff)
From: sudeep.holla@arm.com (Sudeep Holla)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v5 4/5] arm64: add support for ACPI Low Power Idle(LPI)
Date: Mon, 13 Jun 2016 10:40:20 +0100 [thread overview]
Message-ID: <575E7F84.2000106@arm.com> (raw)
In-Reply-To: <DF4PR84MB0041D17321244DFB84979A84D9530@DF4PR84MB0041.NAMPRD84.PROD.OUTLOOK.COM>
On 13/06/16 05:47, Sajjan, Vikas C wrote:
> Hi Sudeep,
>
[...]
> --- a/drivers/firmware/psci.c
> +++ b/drivers/firmware/psci.c
> @@ -13,6 +13,7 @@
>
> #define pr_fmt(fmt) "psci: " fmt
>
> +#include <linux/acpi.h>
> #include <linux/arm-smccc.h>
> #include <linux/cpuidle.h>
> #include <linux/errno.h>
> @@ -310,11 +311,66 @@ static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
> return ret;
> }
>
> +#ifdef CONFIG_ACPI
> +#include <acpi/processor.h>
> +
> +static int __maybe_unused psci_acpi_cpu_init_idle(unsigned int cpu) {
> + int i, count;
> + u32 *psci_states;
> + struct acpi_processor *pr;
> + struct acpi_lpi_state *lpi;
> +
> + pr = per_cpu(processors, cpu);
> + if (unlikely(!pr || !pr->flags.has_lpi))
>
> Any particular reason for _not_ considering CST flag here.
> Or you are planning to add CST support in some other patch set.
>
Are you referring the old C-state objects ? We don't support them on
ARM64. Only LPIs are support. The ARM FFH is not defined for CST, only
for LPIs.
--
Regards,
Sudeep
next prev parent reply other threads:[~2016-06-13 9:40 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-11 15:37 [PATCH v5 0/5] ACPI / processor_idle: Add ACPI v6.0 LPI support Sudeep Holla
2016-05-11 15:37 ` [PATCH v5 1/5] ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE Sudeep Holla
2016-05-11 15:37 ` Sudeep Holla
2016-05-11 16:23 ` Rafael J. Wysocki
2016-05-11 16:23 ` Rafael J. Wysocki
2016-05-11 16:57 ` Sudeep Holla
2016-05-11 16:57 ` Sudeep Holla
[not found] ` <CAJvTdKnJPZ9Nfib=CqBczMP4BERqfqAzeSR-+jjFOGZR51oVmg@mail.gmail.com>
2016-05-11 18:28 ` Len Brown
2016-05-11 18:28 ` Len Brown
2016-05-12 9:10 ` Sudeep Holla
2016-05-12 9:10 ` Sudeep Holla
2016-05-12 13:21 ` [UPDATE][PATCH v5] " Sudeep Holla
2016-05-11 15:37 ` [PATCH v5 2/5] ACPI / processor_idle: Add support for Low Power Idle(LPI) states Sudeep Holla
2016-05-17 17:46 ` Prakash, Prashanth
2016-05-18 17:37 ` Sudeep Holla
2016-05-18 19:13 ` Prakash, Prashanth
2016-05-19 13:26 ` Sudeep Holla
2016-06-10 17:38 ` Sudeep Holla
2016-06-13 21:05 ` Rafael J. Wysocki
2016-06-14 14:24 ` Sudeep Holla
2016-05-11 15:37 ` [PATCH v5 3/5] arm64: cpuidle: drop __init section marker to arm_cpuidle_init Sudeep Holla
2016-05-11 15:37 ` Sudeep Holla
2016-05-11 15:37 ` [PATCH v5 4/5] arm64: add support for ACPI Low Power Idle(LPI) Sudeep Holla
2016-05-11 15:37 ` Sudeep Holla
2016-06-10 12:50 ` Lorenzo Pieralisi
2016-06-10 12:50 ` Lorenzo Pieralisi
2016-06-13 16:27 ` Daniel Lezcano
2016-06-13 16:27 ` Daniel Lezcano
2016-06-13 4:47 ` Sajjan, Vikas C
2016-06-13 4:47 ` Sajjan, Vikas C
2016-06-13 9:40 ` Sudeep Holla [this message]
2016-06-13 9:40 ` Sudeep Holla
2016-05-11 15:37 ` [PATCH v5 5/5] ACPI : enable ACPI_PROCESSOR_IDLE on ARM64 Sudeep Holla
2016-05-11 15:37 ` Sudeep Holla
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