linux-kernel - Re: [PATCH 3/4] Input: elan_i2c

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Message-ID: <20160930235744.GB1680@dtor-ws>
Date:   Fri, 30 Sep 2016 16:57:44 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     KT Liao <kt.liao@....com.tw>, Adrian Alves <aalves@...il.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] Input: elan_i2c - add Host Notify support

On Wed, Sep 28, 2016 at 04:34:03PM +0200, Benjamin Tissoires wrote:
> The Thinkpad series 13 uses Host Notify to report the interrupt.
> Add elan_smb_alert() to handle those interrupts and disable the irq
> handling on this case.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> ---
>  drivers/input/mouse/elan_i2c_core.c | 100 ++++++++++++++++++++++++++++--------
>  1 file changed, 78 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
> index 2de1f75..11671c7 100644
> --- a/drivers/input/mouse/elan_i2c_core.c
> +++ b/drivers/input/mouse/elan_i2c_core.c
> @@ -96,6 +96,34 @@ struct elan_tp_data {
>  	bool			baseline_ready;
>  };
>  
> +static inline void elan_enable_irq(struct elan_tp_data *tp)
> +{
> +	if (tp->client->irq)
> +		enable_irq(tp->client->irq);

Hmm, so I wonder, why alert is not implemented as irqchip? Then clients
would not need to be bothered with these details, they'd simply requster
and manipulate irqs.

Thanks.

-- 
Dmitry