linux-kernel - Re: [PATCH 4/6] clocksource: bcm_kona: Migrate to new 'set-state' interface

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Date:	Mon, 8 Jun 2015 09:09:04 -0700
From:	Ray Jui <rjui@...adcom.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Daniel Lezcano <daniel.lezcano@...aro.org>
CC:	<linaro-kernel@...ts.linaro.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Scott Branden <sbranden@...adcom.com>,
	<bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH 4/6] clocksource: bcm_kona: Migrate to new 'set-state'
 interface

Hi Viresh,

On 6/8/2015 6:40 AM, Viresh Kumar wrote:
> Migrate bcm_kona driver to the new 'set-state' interface provided by
> the clockevents core, the earlier 'set-mode' interface is marked
> obsolete now.
> 
> This also enables us to implement callbacks for new states of clockevent
> devices, for example: ONESHOT_STOPPED.
> 
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Ray Jui <rjui@...adcom.com>
> Cc: Scott Branden <sbranden@...adcom.com>
> Cc: bcm-kernel-feedback-list@...adcom.com
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  drivers/clocksource/bcm_kona_timer.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c
> index f1e33d08dd83..4efca5f7d443 100644
> --- a/drivers/clocksource/bcm_kona_timer.c
> +++ b/drivers/clocksource/bcm_kona_timer.c
> @@ -127,25 +127,25 @@ static int kona_timer_set_next_event(unsigned long clc,
>  	return 0;
>  }
>  
> -static void kona_timer_set_mode(enum clock_event_mode mode,
> -			     struct clock_event_device *unused)
> +static int cona_timer_shutdown(struct clock_event_device *evt)

There's a typo here. It's "kona" not "cona"

>  {
> -	switch (mode) {
> -	case CLOCK_EVT_MODE_ONESHOT:
> -		/* by default mode is one shot don't do any thing */
> -		break;
> -	case CLOCK_EVT_MODE_UNUSED:
> -	case CLOCK_EVT_MODE_SHUTDOWN:
> -	default:
> -		kona_timer_disable_and_clear(timers.tmr_regs);
> -	}
> +	kona_timer_disable_and_clear(timers.tmr_regs);
> +	return 0;
> +}
> +
> +static int cona_timer_set_oneshot(struct clock_event_device *evt)

Same typo.

> +{
> +	/* By default mode is one shot, don't do any thing */
> +	return 0;
>  }
>  
>  static struct clock_event_device kona_clockevent_timer = {
>  	.name = "timer 1",
>  	.features = CLOCK_EVT_FEAT_ONESHOT,
>  	.set_next_event = kona_timer_set_next_event,
> -	.set_mode = kona_timer_set_mode
> +	.set_state_shutdown = cona_timer_shutdown,
> +	.set_state_oneshot = cona_timer_set_oneshot,
> +	.tick_resume = cona_timer_shutdown,
>  };
>  
>  static void __init kona_timer_clockevents_init(void)
> 

Thanks,

Ray
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