linux-kernel - Re: [PATCH RESEND v2] input: tca8418: Use the interrupt trigger from the device tree

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Date:   Tue, 17 Jan 2017 14:16:33 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND v2] input: tca8418: Use the interrupt trigger from
 the device tree

On Tue, Jan 17, 2017 at 10:08:37PM +0100, Maxime Ripard wrote:
> The TCA8418 might be used using different interrupt triggers on various
> boards. This is not working so far because the current code forces a
> falling edge trigger.
> 
> The device tree already provides a trigger type, so let's use whatever it
> sets up, and since we can be loaded without DT, keep the old behaviour for
> the non-DT case.
> 
> Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>

Applied, thank you.

> 
> ---
> 
> Hi,
> 
> This is the second version of the patch "drivers: tca8418: Change the
> interrupt type" that was sent initially on 14/11, and didn't get any
> answer.
> 
> Changes from v1:
>   - Rely on the trigger type provided by the DT
> 
>  drivers/input/keyboard/tca8418_keypad.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
> index 3048ef3e3e16..11d5c76d9fb4 100644
> --- a/drivers/input/keyboard/tca8418_keypad.c
> +++ b/drivers/input/keyboard/tca8418_keypad.c
> @@ -277,6 +277,7 @@ static int tca8418_keypad_probe(struct i2c_client *client,
>  	bool irq_is_gpio = false;
>  	int irq;
>  	int error, row_shift, max_keys;
> +	unsigned long trigger = 0;
>  
>  	/* Copy the platform data */
>  	if (pdata) {
> @@ -289,6 +290,7 @@ static int tca8418_keypad_probe(struct i2c_client *client,
>  		cols = pdata->cols;
>  		rep  = pdata->rep;
>  		irq_is_gpio = pdata->irq_is_gpio;
> +		trigger = IRQF_TRIGGER_FALLING;
>  	} else {
>  		struct device_node *np = dev->of_node;
>  		int err;
> @@ -363,9 +365,7 @@ static int tca8418_keypad_probe(struct i2c_client *client,
>  		irq = gpio_to_irq(irq);
>  
>  	error = devm_request_threaded_irq(dev, irq, NULL, tca8418_irq_handler,
> -					  IRQF_TRIGGER_FALLING |
> -						IRQF_SHARED |
> -						IRQF_ONESHOT,
> +					  trigger | IRQF_SHARED | IRQF_ONESHOT,
>  					  client->name, keypad_data);
>  	if (error) {
>  		dev_err(dev, "Unable to claim irq %d; error %d\n",
> -- 
> 2.11.0
> 

-- 
Dmitry