Re: [RFC PATCH v3 05/15] mfd: input: bd71828: Add power-key support

From: Lee Jones <lee.jones@linaro.org>
To: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Cc: mazziesaccount@gmail.com,
	Jacek Anaszewski <jacek.anaszewski@gmail.com>,
	Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	linux-leds@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org,
	linux-gpio@vger.kernel.org, linux-rtc@vger.kernel.org
Subject: Re: [RFC PATCH v3 05/15] mfd: input: bd71828: Add power-key support
Date: Mon, 11 Nov 2019 10:59:55 +0000	[thread overview]
Message-ID: <20191111105955.GG3218@dell> (raw)
In-Reply-To: <d7be7969b9fed57e7790811ff90b9a2b4b6478bb.1572606437.git.matti.vaittinen@fi.rohmeurope.com>

On Fri, 01 Nov 2019, Matti Vaittinen wrote:

> Use gpio_keys to send power input-event to user-space when power
> button (short) press is detected.
> 
> Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
> ---
> 
> Changes from v2 - No changes
> 
>  drivers/mfd/rohm-bd71828.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/mfd/rohm-bd71828.c b/drivers/mfd/rohm-bd71828.c
> index b7de79e1fcdb..f77ba1ec3e99 100644
> --- a/drivers/mfd/rohm-bd71828.c
> +++ b/drivers/mfd/rohm-bd71828.c
> @@ -4,7 +4,9 @@
>  //
>  // ROHM BD71828 PMIC driver
>  
> +#include <linux/gpio_keys.h>
>  #include <linux/i2c.h>
> +#include <linux/input.h>
>  #include <linux/interrupt.h>
>  #include <linux/ioport.h>
>  #include <linux/irq.h>
> @@ -15,6 +17,18 @@
>  #include <linux/regmap.h>
>  #include <linux/types.h>
>  
> +static struct gpio_keys_button button = {
> +	.code = KEY_POWER,
> +	.gpio = -1,
> +	.type = EV_KEY,
> +};
> +
> +static struct gpio_keys_platform_data bd71828_powerkey_data = {
> +	.buttons = &button,
> +	.nbuttons = 1,
> +	.name = "bd71828-pwrkey",
> +};
> +
>  static const struct resource rtc_irqs[] = {
>  	DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC0, "bd71828-rtc-alm-0"),
>  	DEFINE_RES_IRQ_NAMED(BD71828_INT_RTC1, "bd71828-rtc-alm-1"),
> @@ -36,6 +50,10 @@ static struct mfd_cell bd71828_mfd_cells[] = {
>  		.name = "bd70528-rtc",
>  		.resources = rtc_irqs,
>  		.num_resources = ARRAY_SIZE(rtc_irqs),
> +	}, {
> +		.name = "gpio-keys",
> +		.platform_data = &bd71828_powerkey_data,
> +		.pdata_size = sizeof(bd71828_powerkey_data),
>  	},
>  };
>  
> @@ -288,9 +306,19 @@ static int bd71828_i2c_probe(struct i2c_client *i2c,
>  		dev_err(&i2c->dev, "Failed to add IRQ chip\n");
>  		return ret;
>  	}
> +

This should be fixed in the last patch.

>  	dev_dbg(&i2c->dev, "Registered %d IRQs for chip\n",
>  		bd71828_irq_chip.num_irqs);
>  
> +	ret = regmap_irq_get_virq(irq_data, BD71828_INT_SHORTPUSH);
> +

Remove this empty line.

> +	if (ret < 0) {
> +		dev_err(&i2c->dev, "Failed to get the power-key IRQ\n");
> +		return ret;
> +	}
> +
> +	button.irq = ret;
> +

Once fixed, please apply my:

For my own reference:
  Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>

-- 
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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