linux-kernel - Re: [PATCH v2 3/3] ARM: imx: Add imx6q cpuidle driver

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Date:	Wed, 2 May 2012 08:50:20 -0500
From:	Rob Lee <rob.lee@...aro.org>
To:	Shawn Guo <shawn.guo@...aro.org>
Cc:	kernel@...gutronix.de, amit.kucheria@...aro.org,
	daniel.lezcano@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linaro-dev@...ts.linaro.org,
	patches@...aro.org, jj@...osbits.net
Subject: Re: [PATCH v2 3/3] ARM: imx: Add imx6q cpuidle driver

On Tue, May 1, 2012 at 10:23 PM, Shawn Guo <shawn.guo@...aro.org> wrote:
> On Tue, May 01, 2012 at 09:12:40PM -0500, Robert Lee wrote:
>> Add basic imx6q cpuidle driver.  For now, only basic WFI state is
>> supported.  Deeper idle states will be added in the future.
>>
>> Signed-off-by: Robert Lee <rob.lee@...aro.org>
>> ---
>>  arch/arm/mach-imx/cpuidle-imx6q.c |   33 +++++++++++++++++++++++++++++++++
>
> So, this file is not needed any more, I guess.
>

Yes, I missed that.  It shouldn't have been part of the patch.

>>  arch/arm/mach-imx/mach-imx6q.c    |   18 ++++++++++++++++++
>>  2 files changed, 51 insertions(+)
>>  create mode 100644 arch/arm/mach-imx/cpuidle-imx6q.c
>>
>> diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c
>> new file mode 100644
>> index 0000000..b74557f
>> --- /dev/null
>> +++ b/arch/arm/mach-imx/cpuidle-imx6q.c
>> @@ -0,0 +1,33 @@
>> +/*
>> + * Copyright 2012 Freescale Semiconductor, Inc.
>> + * Copyright 2012 Linaro Ltd.
>> + *
>> + * The code contained herein is licensed under the GNU General Public
>> + * License. You may obtain a copy of the GNU General Public License
>> + * Version 2 or later at the following locations:
>> + *
>> + * http://www.opensource.org/licenses/gpl-license.html
>> + * http://www.gnu.org/copyleft/gpl.html
>> + */
>> +
>> +#include <linux/kernel.h>
>> +#include <linux/init.h>
>> +#include <linux/cpuidle.h>
>> +#include <linux/export.h>
>> +#include <asm/cpuidle.h>
>> +#include <mach/cpuidle.h>
>> +
>> +static struct cpuidle_driver imx6q_cpuidle_driver = {
>> +     .name                   = "imx6q_cpuidle",
>> +     .owner                  = THIS_MODULE,
>> +     .en_core_tk_irqen       = 1,
>> +     .states[0]              = ARM_CPUIDLE_WFI_STATE,
>> +     .state_count            = 1,
>> +};
>> +
>> +int __init imx6q_cpuidle_init(void)
>> +{
>> +     imx_cpuidle_set_driver(&imx6q_cpuidle_driver);
>> +
>> +     return 0;
>> +}
>> diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
>> index da6c1d9..21e2051 100644
>> --- a/arch/arm/mach-imx/mach-imx6q.c
>> +++ b/arch/arm/mach-imx/mach-imx6q.c
>> @@ -21,6 +21,9 @@
>>  #include <linux/of_platform.h>
>>  #include <linux/phy.h>
>>  #include <linux/micrel_phy.h>
>> +#include <linux/export.h>
>> +#include <linux/cpuidle.h>
>> +#include <asm/cpuidle.h>
>>  #include <asm/smp_twd.h>
>>  #include <asm/hardware/cache-l2x0.h>
>>  #include <asm/hardware/gic.h>
>> @@ -29,6 +32,7 @@
>>  #include <asm/system_misc.h>
>>  #include <mach/common.h>
>>  #include <mach/hardware.h>
>> +#include <mach/cpuidle.h>
>
> The headers here are mostly sorted in names, so please ...
>

Do you mean sorted alphabetically per group?  So the last three
includes should look like this instead?
...
#include <mach/common.h>
#include <mach/cpuidle.h>
#include <mach/hardware.h>
...
Thanks,
Rob

> Regards,
> Shawn
>
>>
>>  void imx6q_restart(char mode, const char *cmd)
>>  {
>> @@ -86,6 +90,19 @@ static void __init imx6q_init_machine(void)
>>       imx6q_pm_init();
>>  }
>>
>> +static struct cpuidle_driver imx6q_cpuidle_driver = {
>> +     .name                   = "imx6q_cpuidle",
>> +     .owner                  = THIS_MODULE,
>> +     .en_core_tk_irqen       = 1,
>> +     .states[0]              = ARM_CPUIDLE_WFI_STATE,
>> +     .state_count            = 1,
>> +};
>> +
>> +static void __init imx6q_init_late(void)
>> +{
>> +     imx_cpuidle_init(&imx6q_cpuidle_driver);
>> +}
>> +
>>  static void __init imx6q_map_io(void)
>>  {
>>       imx_lluart_map_io();
>> @@ -142,6 +159,7 @@ DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)")
>>       .handle_irq     = imx6q_handle_irq,
>>       .timer          = &imx6q_timer,
>>       .init_machine   = imx6q_init_machine,
>> +     .init_late      = imx6q_init_late,
>>       .dt_compat      = imx6q_dt_compat,
>>       .restart        = imx6q_restart,
>>  MACHINE_END
>> --
>> 1.7.10
>>
--
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