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From: Javier Martinez Canillas <javierm@redhat.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"Linux Fbdev development list" <linux-fbdev@vger.kernel.org>,
	"Linux PWM List" <linux-pwm@vger.kernel.org>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel.vetter@ffwll.ch>,
	"Mark Brown" <broonie@kernel.org>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"DRI Development" <dri-devel@lists.freedesktop.org>,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Noralf Trønnes" <noralf@tronnes.org>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Maxime Ripard" <maxime@cerno.tech>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Lee Jones" <lee.jones@linaro.org>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Sam Ravnborg" <sam@ravnborg.org>
Subject: Re: [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays
Date: Tue, 8 Feb 2022 18:19:54 +0100	[thread overview]
Message-ID: <bb474101-eaa4-e815-0fa0-7adba3d56925@redhat.com> (raw)
In-Reply-To: <02d5b225-e1a8-77f6-7e4e-18d6a1df5e48@redhat.com>

On 2/8/22 16:40, Javier Martinez Canillas wrote:
> On 2/8/22 16:23, Geert Uytterhoeven wrote:

[snip]

>>
>> Fbcon does small writes to the shadow frame buffer, while fbtest
>> writes to the mmap()ed /dev/fbX, causing a full page to be updated.
>>
> 
> I see. Thanks for the information.
> 

I found the bug. Partial updates where indeed broken and only a full
screen update was working. I didn't notice because where using your
fbtests that mmap and do a full update.

Thanks a lot for reporting this, the issue should be fixed in v3.

Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat


WARNING: multiple messages have this Message-ID (diff)
From: Javier Martinez Canillas <javierm@redhat.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	"Linux Fbdev development list" <linux-fbdev@vger.kernel.org>,
	"Noralf Trønnes" <noralf@tronnes.org>,
	"Sam Ravnborg" <sam@ravnborg.org>,
	"Linux PWM List" <linux-pwm@vger.kernel.org>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel.vetter@ffwll.ch>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"DRI Development" <dri-devel@lists.freedesktop.org>,
	"Liam Girdwood" <lgirdwood@gmail.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Mark Brown" <broonie@kernel.org>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Maxime Ripard" <maxime@cerno.tech>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
	"Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Lee Jones" <lee.jones@linaro.org>
Subject: Re: [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays
Date: Tue, 8 Feb 2022 18:19:54 +0100	[thread overview]
Message-ID: <bb474101-eaa4-e815-0fa0-7adba3d56925@redhat.com> (raw)
In-Reply-To: <02d5b225-e1a8-77f6-7e4e-18d6a1df5e48@redhat.com>

On 2/8/22 16:40, Javier Martinez Canillas wrote:
> On 2/8/22 16:23, Geert Uytterhoeven wrote:

[snip]

>>
>> Fbcon does small writes to the shadow frame buffer, while fbtest
>> writes to the mmap()ed /dev/fbX, causing a full page to be updated.
>>
> 
> I see. Thanks for the information.
> 

I found the bug. Partial updates where indeed broken and only a full
screen update was working. I didn't notice because where using your
fbtests that mmap and do a full update.

Thanks a lot for reporting this, the issue should be fixed in v3.

Best regards,
-- 
Javier Martinez Canillas
Linux Engineering
Red Hat


  reply	other threads:[~2022-02-08 17:20 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-04 13:43 [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Javier Martinez Canillas
2022-02-04 13:43 ` Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888,gray8}_to_mono_reversed() Javier Martinez Canillas
2022-02-04 13:43   ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888, gray8}_to_mono_reversed() Javier Martinez Canillas
2022-02-04 15:52   ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888,gray8}_to_mono_reversed() Thomas Zimmermann
2022-02-04 15:52     ` Thomas Zimmermann
2022-02-04 16:00     ` Thomas Zimmermann
2022-02-04 19:31     ` Javier Martinez Canillas
2022-02-04 19:31       ` Javier Martinez Canillas
2022-02-04 20:35       ` Thomas Zimmermann
2022-02-04 20:35         ` Thomas Zimmermann
2022-02-04 21:02     ` Ilia Mirkin
2022-02-04 21:02       ` [PATCH v2 1/4] drm/format-helper: Add drm_fb_{xrgb8888, gray8}_to_mono_reversed() Ilia Mirkin
2022-02-07 12:44       ` Thomas Zimmermann
2022-02-04 13:43 ` [PATCH v2 2/4] drm/tiny: Add driver for Solomon SSD130X OLED displays Javier Martinez Canillas
2022-02-04 13:43   ` Javier Martinez Canillas
2022-02-04 14:26   ` Andy Shevchenko
2022-02-04 14:26     ` Andy Shevchenko
2022-02-04 19:19     ` Javier Martinez Canillas
2022-02-04 19:19       ` Javier Martinez Canillas
2022-02-05 13:04       ` Andy Shevchenko
2022-02-05 13:04         ` Andy Shevchenko
2022-02-05 17:40         ` Javier Martinez Canillas
2022-02-05 17:40           ` Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 3/4] MAINTAINERS: Add entry for Solomon SSD130X OLED displays DRM driver Javier Martinez Canillas
2022-02-04 13:43   ` Javier Martinez Canillas
2022-02-04 13:57   ` Andy Shevchenko
2022-02-04 13:57     ` Andy Shevchenko
2022-02-04 14:12     ` Javier Martinez Canillas
2022-02-04 14:12       ` Javier Martinez Canillas
2022-02-04 14:28       ` Andy Shevchenko
2022-02-04 14:28         ` Andy Shevchenko
2022-02-04 14:33         ` Javier Martinez Canillas
2022-02-04 14:33           ` Javier Martinez Canillas
2022-02-04 13:43 ` [PATCH v2 4/4] dt-bindings: display: ssd1307fb: Add myself as binding co-maintainer Javier Martinez Canillas
2022-02-04 13:43   ` Javier Martinez Canillas
2022-02-09 22:14   ` Rob Herring
2022-02-09 22:14     ` Rob Herring
2022-02-04 14:31 ` [PATCH v2 0/4] drm/tiny: Add driver for Solomon SSD1307 OLED displays Geert Uytterhoeven
2022-02-04 14:31   ` Geert Uytterhoeven
2022-02-04 14:37   ` Javier Martinez Canillas
2022-02-04 14:37     ` Javier Martinez Canillas
2022-02-08 14:19 ` Geert Uytterhoeven
2022-02-08 14:19   ` Geert Uytterhoeven
2022-02-08 15:10   ` Javier Martinez Canillas
2022-02-08 15:10     ` Javier Martinez Canillas
2022-02-08 15:18     ` Mark Brown
2022-02-08 15:18       ` Mark Brown
2022-02-08 15:32       ` Javier Martinez Canillas
2022-02-08 15:32         ` Javier Martinez Canillas
2022-02-08 15:23     ` Geert Uytterhoeven
2022-02-08 15:23       ` Geert Uytterhoeven
2022-02-08 15:40       ` Javier Martinez Canillas
2022-02-08 15:40         ` Javier Martinez Canillas
2022-02-08 17:19         ` Javier Martinez Canillas [this message]
2022-02-08 17:19           ` Javier Martinez Canillas
2022-02-09 13:47     ` Andy Shevchenko
2022-02-09 13:47       ` Andy Shevchenko
2022-02-09 14:27       ` Geert Uytterhoeven
2022-02-09 14:27         ` Geert Uytterhoeven
2022-02-09 14:42         ` Javier Martinez Canillas
2022-02-09 14:42           ` Javier Martinez Canillas
2022-02-09 15:32           ` Andy Shevchenko
2022-02-09 15:32             ` Andy Shevchenko
2022-02-10  8:32             ` Maxime Ripard
2022-02-10  8:32               ` Maxime Ripard

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