linux-kernel - RE: [PATCH V2] Input: synaptics-rmi4- Add a new feature for Forepad.

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Date:   Mon, 3 Jul 2023 02:49:50 +0000
From:   Marge Yang <Marge.Yang@...synaptics.com>
To:     Andi Shyti <andi.shyti@...nel.org>,
        Marge Yang <Marge.Yang@...synaptics.com>
CC:     "dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        David Chiu <David.Chiu@...synaptics.com>,
        Derek Cheng <derek.cheng@...synaptics.com>,
        Sam Tsai <Sam.Tsai@...aptics.com>,
        Vincent Huang <Vincent.huang@...synaptics.com>
Subject: RE: [PATCH V2] Input: synaptics-rmi4- Add a new feature for Forepad.

Hi Andi,
	I have modified it and send PATCH V3.
Thanks
Marge Yang

-----Original Message-----
From: Andi Shyti <andi.shyti@...nel.org> 
Sent: Wednesday, June 14, 2023 4:49 AM
To: Marge Yang <Marge.Yang@...synaptics.com>
Cc: dmitry.torokhov@...il.com; linux-input@...r.kernel.org; linux-kernel@...r.kernel.org; David Chiu <David.Chiu@...synaptics.com>; Derek Cheng <derek.cheng@...synaptics.com>; Sam Tsai <Sam.Tsai@...aptics.com>; Vincent Huang <Vincent.huang@...synaptics.com>
Subject: Re: [PATCH V2] Input: synaptics-rmi4- Add a new feature for Forepad.

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Hi Marge,

[...]

> +static irqreturn_t rmi_f21_attention(int irq, void *ctx) {
> +     struct rmi_function *fn = ctx;
> +     struct f21_data *f21 = dev_get_drvdata(&fn->dev);
> +     int error;
> +
> +     error = rmi_read_block(fn->rmi_dev,
> +                             fn->fd.data_base_addr+RMI_F21_FORCE_CLICK_OFFSET,
> +                             f21->data_regs, 1);
> +     if (error) {
> +             dev_err(&fn->dev,
> +                     "%s: Failed to read f21 data registers: %d\n",
> +                     __func__, error);
> +             return IRQ_RETVAL(error);
> +     }
> +
> +     if (!!(f21->data_regs[0] & RMI_f21_FORCE_CLICK))

no need for double negation here.

Andi

> +             input_report_key(f21->input, f21->key_code, true);
> +     else
> +             input_report_key(f21->input, f21->key_code, false);
> +     return IRQ_HANDLED;
> +}