linux-kernel - Re: [NEW DRIVER V4 3/7] DA9058 ONKEY driver

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Date:	Fri, 12 Apr 2013 13:01:30 -0700
From:	Randy Dunlap <rdunlap@...radead.org>
To:	Anthony Olech <anthony.olech.opensource@...semi.com>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Ashish Jangam <ashish.jangam@...tcummins.com>,
	Eric Andersson <eric.andersson@...xphere.com>,
	Andrew Jones <drjones@...hat.com>, linux-input@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	David Dajun Chen <david.chen@...semi.com>
Subject: Re: [NEW DRIVER V4 3/7] DA9058 ONKEY driver

On 04/12/13 06:05, Anthony Olech wrote:
> This is the ONKEY component driver of the Dialog DA9058 PMIC.
> This driver is just one component of the whole DA9058 PMIC driver.
> It depends on the CORE component driver of the DA9058 MFD.
> 
> Signed-off-by: Anthony Olech <anthony.olech.opensource@...semi.com>
> Signed-off-by: David Dajun Chen <david.chen@...semi.com>
> ---
>  drivers/input/misc/Kconfig        |   10 +++
>  drivers/input/misc/Makefile       |    1 +
>  drivers/input/misc/da9058_onkey.c |  177 +++++++++++++++++++++++++++++++++++++
>  3 files changed, 188 insertions(+)
>  create mode 100644 drivers/input/misc/da9058_onkey.c
> 
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 259ef31..bd07b38 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -93,6 +93,16 @@ config INPUT_BMA150
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called bma150.
>  
> +config INPUT_DA9058_ONKEY
> +	tristate "DA9058 ONKEY support"
> +	depends on MFD_DA9058
> +	help
> +	  Support the ONKEY of DA9058 PMICs as an input device
> +	  reporting power button status.

What possible values can a power button status have?
Must be more than my KISS guess:
	this software is running => ON
	software not running     => OFF
eh?

> +
> +	  To compile this driver as a module, choose M here: the module
> +	  will be called da9058_onkey.
> +
>  config INPUT_PCSPKR
>  	tristate "PC Speaker support"
>  	depends on PCSPKR_PLATFORM
> diff --git a/drivers/input/misc/da9058_onkey.c b/drivers/input/misc/da9058_onkey.c
> new file mode 100644
> index 0000000..969ad70
> --- /dev/null
> +++ b/drivers/input/misc/da9058_onkey.c
> @@ -0,0 +1,177 @@
> +/*
> + *  Copyright (C) 2012 Dialog Semiconductor Ltd.
> + *
> + *  This program is free software; you can redistribute it and/or modify
> + *  it under the terms of the GNU General Public License as published by
> + *  the Free Software Foundation; either version 2 of the License, or
> + *  (at your option) any later version.
> + *
> + */
> +
> +
> +static int da9058_onkey_probe(struct platform_device *pdev)
> +{
> +	struct da9058 *da9058 = dev_get_drvdata(pdev->dev.parent);
> +	const struct mfd_cell *cell = mfd_get_cell(pdev);
> +	struct da9058_onkey_pdata *onkey_pdata;
> +	struct da9058_onkey *onkey;
> +	int ret;
> +
> +	if (cell == NULL) {
> +		ret = -ENODEV;
> +		goto exit;
> +	}
> +
> +	onkey_pdata = cell->platform_data;
> +
> +	if (onkey_pdata == NULL) {
> +		ret = -EINVAL;
> +		goto exit;
> +	}
> +
> +	dev_info(&pdev->dev, "Starting ONKEY\n");
> +
> +	onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9058_onkey),
> +				GFP_KERNEL);
> +	if (!onkey) {
> +		ret = -ENOMEM;
> +		goto exit;
> +	}
> +
> +	platform_set_drvdata(pdev, onkey);
> +
> +	onkey->da9058 = da9058;
> +	onkey->pdev = pdev;
> +
> +	onkey->irq = platform_get_irq(pdev, 0);
> +	if (onkey->irq < 0) {
> +		dev_err(&pdev->dev, "can not get ONKEY IRQ error=%d\n",

		                     cannot

> +				onkey->irq);


-- 
~Randy
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