linux-kernel - Re: [PATCH v2 1/2] mfd: stmpe: support gpio over irq under device tree

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Date:	Mon, 15 Sep 2014 16:12:43 -0700
From:	Lee Jones <lee.jones@...aro.org>
To:	Sean Cross <xobs@...agi.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>, linux-kernel@...r.kernel.org,
	Randy Dunlap <rdunlap@...radead.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
	bunnie@...agi.com
Subject: Re: [PATCH v2 1/2] mfd: stmpe: support gpio over irq under device
 tree

On Fri, 12 Sep 2014, Sean Cross wrote:

> The stmpe_platform_data has a irq_over_gpio field, which allows the
> system to read STMPE events whenever an IRQ occurs on a GPIO pin.
> This patch adds the ability to configure this field and to use a GPIO
> as an IRQ source for boards configuring the STMPE in device tree.
> 
> Signed-off-by: Sean Cross <xobs@...agi.com>
> ---
>  drivers/mfd/stmpe.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)

Applied, thanks.

> diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
> index 3b6bfa7..4c42b05 100644
> --- a/drivers/mfd/stmpe.c
> +++ b/drivers/mfd/stmpe.c
> @@ -1122,7 +1122,12 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
>  	if (pdata->id < 0)
>  		pdata->id = -1;
>  
> -	pdata->irq_trigger = IRQF_TRIGGER_NONE;
> +	pdata->irq_gpio = of_get_named_gpio_flags(np, "irq-gpio", 0,
> +				&pdata->irq_trigger);
> +	if (gpio_is_valid(pdata->irq_gpio))
> +		pdata->irq_over_gpio = 1;
> +	else
> +		pdata->irq_trigger = IRQF_TRIGGER_NONE;
>  
>  	of_property_read_u32(np, "st,autosleep-timeout",
>  			&pdata->autosleep_timeout);

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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