From: Thomas Zimmermann <tzimmermann@suse.de>
To: Sam Ravnborg <sam@ravnborg.org>, Dan.Sneddon@microchip.com
Cc: airlied@linux.ie, liviu.dudau@arm.com, stefan@agner.ch,
amd-gfx@lists.freedesktop.org, anitha.chrisanthus@intel.com,
patrik.r.jakobsson@gmail.com, linux-arm-msm@vger.kernel.org,
freedreno@lists.freedesktop.org, daniel@ffwll.ch,
edmund.j.dea@intel.com, s.hauer@pengutronix.de,
alison.wang@nxp.com, maarten.lankhorst@linux.intel.com,
mripard@kernel.org, dri-devel@lists.freedesktop.org,
sean@poorly.run, linux-arm-kernel@lists.infradead.org,
tomba@kernel.org, bbrezillon@kernel.org, jyri.sarha@iki.fi,
christian.koenig@amd.com, robdclark@gmail.com,
kernel@pengutronix.de, alexander.deucher@amd.com,
shawnguo@kernel.org, brian.starkey@arm.com
Subject: Re: [PATCH 03/14] drm/atmel-hlcdc: Convert to Linux IRQ interfaces
Date: Thu, 29 Jul 2021 21:18:30 +0200 [thread overview]
Message-ID: <1df22406-2e91-c15a-49dc-1cf33522a142@suse.de> (raw)
In-Reply-To: <YQG5+/9lPexU3Dn3@ravnborg.org>
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Hi
Am 28.07.21 um 22:11 schrieb Sam Ravnborg:
> Hi Dan,
>
>>>
>>> I think I got it - we need to set irq_enabled to true.
>>> The documentation says so:
>>> "
>>> * @irq_enabled:
>>> *
>>> * Indicates that interrupt handling is enabled, specifically vblank
>>> * handling. Drivers which don't use drm_irq_install() need to set this
>>> * to true manually.
>>> "
>>>
>>> Can you try to add the following line:
>>>
>>>
>>> +static int atmel_hlcdc_dc_irq_install(struct drm_device *dev, unsigned int irq)
>>> +{
>>> + int ret;
>>> +
>>> + if (irq == IRQ_NOTCONNECTED)
>>> + return -ENOTCONN;
>>> +
>>>
>>> dev->irq_enabled = true; <= THIS LINE
>>>
>>>
>>> + atmel_hlcdc_dc_irq_disable(dev);
>>> +
>>> + ret = request_irq(irq, atmel_hlcdc_dc_irq_handler, 0, dev->driver->name, dev);
>>> + if (ret)
>>> + return ret;
>>>
>>> I hope this fixes it.
>>
>> It does! With the irq_enabled line added everything is looking good.
Are you sure, you're testing with the latest drm-misc-next or drm-tip?
Because using irq_enabled is deprecated and the flag was recently
replaced by commit 1e4cd78ed493 ("drm: Don't test for IRQ support in
VBLANK ioctls").
Best regards
Thomas
>
> Great, thanks for testing.
>
> Thomas - I assume you will do a re-spin and there is likely some fixes
> for the applied IRQ conversions too.
>
> Note - irq_enabled must be cleared if request_irq fails. I did not
> include this in the testing here.
>
> Sam
>
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer
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next prev parent reply other threads:[~2021-07-29 19:20 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 18:27 [PATCH 00/14] drm: Make DRM's IRQ helpers legacy Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 01/14] drm/amdgpu: Convert to Linux IRQ interfaces Thomas Zimmermann
2021-07-28 10:27 ` Christian König
2021-07-28 14:03 ` Alex Deucher
2021-08-02 8:43 ` Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 02/14] drm/arm/hdlcd: " Thomas Zimmermann
2021-07-28 13:31 ` Sam Ravnborg
2021-07-28 18:15 ` Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 03/14] drm/atmel-hlcdc: " Thomas Zimmermann
2021-07-28 14:00 ` Sam Ravnborg
2021-07-28 15:11 ` Dan.Sneddon
2021-07-28 15:44 ` Sam Ravnborg
2021-07-28 17:50 ` Dan.Sneddon
2021-07-28 18:11 ` Sam Ravnborg
2021-07-28 18:17 ` Thomas Zimmermann
2021-07-28 18:46 ` Dan.Sneddon
2021-07-28 19:08 ` Sam Ravnborg
2021-07-28 19:19 ` Dan.Sneddon
2021-07-28 20:11 ` Sam Ravnborg
2021-07-29 19:18 ` Thomas Zimmermann [this message]
2021-07-29 19:21 ` Thomas Zimmermann
2021-07-29 19:24 ` Dan.Sneddon
2021-07-29 19:32 ` Thomas Zimmermann
2021-07-29 19:48 ` Sam Ravnborg
2021-07-29 19:55 ` Dan.Sneddon
2021-07-30 8:31 ` Thomas Zimmermann
2021-07-30 18:10 ` Dan.Sneddon
2021-07-28 18:19 ` Dan.Sneddon
2021-07-27 18:27 ` [PATCH 04/14] drm/fsl-dcu: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 05/14] drm/gma500: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 06/14] drm/kmb: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 07/14] drm/msm: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 08/14] drm/mxsfb: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 09/14] drm/radeon: " Thomas Zimmermann
2021-08-02 15:27 ` Alex Deucher
2021-07-27 18:27 ` [PATCH 10/14] drm/tidss: " Thomas Zimmermann
2021-07-29 7:02 ` Tomi Valkeinen
2021-07-27 18:27 ` [PATCH 11/14] drm/tilcdc: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 12/14] drm/vc4: " Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 13/14] drm: Remove unused devm_drm_irq_install() Thomas Zimmermann
2021-07-27 18:27 ` [PATCH 14/14] drm: IRQ midlayer is now legacy Thomas Zimmermann
2021-07-28 14:10 ` Sam Ravnborg
2021-07-27 18:51 ` [PATCH 00/14] drm: Make DRM's IRQ helpers legacy Sam Ravnborg
2021-07-28 5:19 ` Thomas Zimmermann
2021-07-31 18:50 ` Sam Ravnborg
2021-08-01 19:56 ` Thomas Zimmermann
2021-08-01 20:24 ` Sam Ravnborg
2021-08-02 8:42 ` Thomas Zimmermann
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