linux-kernel - Re: [PATCH 09/10] drm/tidss: IRQ code cleanup

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Message-ID: <90b38d40-d71e-4b0e-af35-047dcc5c5b41@ideasonboard.com>
Date:   Thu, 2 Nov 2023 09:00:11 +0200
From:   Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc:     Aradhya Bhatia <a-bhatia1@...com>,
        Devarsh Thakkar <devarsht@...com>,
        Jyri Sarha <jyri.sarha@....fi>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/10] drm/tidss: IRQ code cleanup

On 01/11/2023 16:52, Laurent Pinchart wrote:
> Hi Tomi,
> 
> Thank you for the patch.
> 
> On Wed, Nov 01, 2023 at 11:17:46AM +0200, Tomi Valkeinen wrote:
>> The IRQ setup code is overly complex. All we really need to do is
>> initialize the related fields in struct tidss_device, and request the
>> IRQ.
>>
>> We can drop all the HW accesses, as they are pointless: the driver will
>> set the IRQs correctly when it needs any of the IRQs, and at probe time
>> we have done a reset, so we know that all the IRQs are masked by default
>> in the hardware.
> 
> Even for K2G ?

Good point. I'll add a simple manual reset for k2g, masking the IRQs and 
disabling the VPs.

  Tomi