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From: Tony Lindgren <tony@atomide.com>
To: Kevin Hilman <khilman@deeprootsystems.com>
Cc: linux-omap@vger.kernel.org
Subject: Re: [PATCH 1/1] i2c-omap: add mpu wake up latency constraint in i2c
Date: Mon, 26 Apr 2010 16:12:19 -0700	[thread overview]
Message-ID: <20100426231219.GS7225@atomide.com> (raw)
In-Reply-To: <8739yhu8b5.fsf@deeprootsystems.com>

* Kevin Hilman <khilman@deeprootsystems.com> [100426 15:57]:
> Tony Lindgren <tony@atomide.com> writes:
>  
> +#ifdef CONFIG_ARCH_OMAP3
> +/*
> + * omap_i2c_set_wfc_mpu_wkup_lat - sets mpu wake up constraint
> + * @dev:	i2c bus device pointer
> + * @val:	latency constraint to set, -1 to disable constraint
> + *
> + * When waiting for completion of a i2c transfer, we need to set a wake up
> + * latency constraint for the MPU. This is to ensure quick enough wakeup from
> + * idle, when transfer completes.
> + */
> +static void omap_i2c_set_wfc_mpu_wkup_lat(struct device *dev, int val)
> +{
> +	omap_pm_set_max_mpu_wakeup_lat(dev, val);
> +}
> +#endif
> +

Can't you leave out the above too?

> +	struct omap_i2c_bus_platform_data *pd;
>  	struct resource *res;
>  	resource_size_t base, irq;
>  
>  	pdev = &omap_i2c_devices[bus_id - 1];
> +	pd = pdev->dev.platform_data;
>  	if (bus_id == 1) {
>  		res = pdev->resource;
>  		if (cpu_class_is_omap1()) {
> @@ -122,6 +143,8 @@ static int __init omap_i2c_add_bus(int bus_id)
>  		omap1_i2c_mux_pins(bus_id);
>  	if (cpu_class_is_omap2())
>  		omap2_i2c_mux_pins(bus_id);
> +	if (cpu_is_omap34xx())
> +		pd->set_mpu_wkup_lat = omap_i2c_set_wfc_mpu_wkup_lat;

And then just set
		pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat;

Here instead?

BTW, in your version looks like compile will break if CONFIG_ARCH_OMAP3
is not set.

Tony

  reply	other threads:[~2010-04-26 23:12 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-21 19:04 [PATCH 0/1] i2c PM change for omap-testing Kevin Hilman
2010-04-21 19:04 ` [PATCH 1/1] i2c-omap: add mpu wake up latency constraint in i2c Kevin Hilman
2010-04-21 23:58   ` Paul Walmsley
2010-04-26 22:58   ` Tony Lindgren
2010-04-26 23:02     ` Kevin Hilman
2010-04-26 23:12       ` Tony Lindgren [this message]
2010-04-26 23:31         ` Kevin Hilman
2010-04-27  0:16           ` Tony Lindgren

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