linux-kernel - Re: [PATCH v14 3/5] input: touchscreen: mxs-lradc: Add support for touchscreen

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Date:   Wed, 1 Mar 2017 12:52:38 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Ksenija Stanojevic <ksenija.stanojevic@...il.com>
Cc:     linux-kernel@...r.kernel.org, lee.jones@...aro.org,
        linux-input@...r.kernel.org, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, marex@...x.de,
        linux-iio@...r.kernel.org, harald@...ib.org,
        stefan.wahren@...e.com, fabio.estevam@...escale.com
Subject: Re: [PATCH v14 3/5] input: touchscreen: mxs-lradc: Add support for
 touchscreen

Hi Ksenija,

On Wed, Mar 01, 2017 at 07:02:11PM +0100, Ksenija Stanojevic wrote:
> +static int mxs_lradc_ts_register(struct mxs_lradc_ts *ts)
> +{
> +	struct input_dev *input = ts->ts_input;
> +	struct device *dev = ts->dev;
> +
> +	input = devm_input_allocate_device(dev);
> +	if (!input)
> +		return -ENOMEM;
> +
> +	input->name = "mxs-lradc-ts";
> +	input->id.bustype = BUS_HOST;
> +	input->open = mxs_lradc_ts_open;
> +	input->close = mxs_lradc_ts_close;
> +
> +	__set_bit(EV_ABS, input->evbit);
> +	__set_bit(EV_KEY, input->evbit);
> +	__set_bit(BTN_TOUCH, input->keybit);

If you end up re-spinnig the series, please drop __set_bit()s above and
replace with

	input_set_capability(input, EV_KEY, BTN_TOUCH);

because input_set_abs_params() already sets EV_ABS for you.

If you will not re-spin, you can leave it as is.

In any case:

Acked-by: Dmitry Torokhov <dmitry.torokhov@...il.com>


> +	__set_bit(INPUT_PROP_DIRECT, input->propbit);
> +	input_set_abs_params(input, ABS_X, 0, LRADC_SINGLE_SAMPLE_MASK, 0, 0);
> +	input_set_abs_params(input, ABS_Y, 0, LRADC_SINGLE_SAMPLE_MASK, 0, 0);
> +	input_set_abs_params(input, ABS_PRESSURE, 0, LRADC_SINGLE_SAMPLE_MASK,
> +			     0, 0);
> +
> +	ts->ts_input = input;
> +	input_set_drvdata(input, ts);
> +
> +	return input_register_device(input);
> +}

Thanks.

-- 
Dmitry