From: Peter Korsgaard <jacmet@sunsite.dk>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes
Date: Tue, 10 Jan 2012 14:19:18 +0000 [thread overview]
Message-ID: <87pqerd4ih.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <20120110140218.GB7180@jl-vm1.vm.bytemark.co.uk> (Jamie Lokier's message of "Tue, 10 Jan 2012 14:02:18 +0000")
>>>>> "Jamie" = Jamie Lokier <jamie@shareable.org> writes:
>> Similar you can connect a 12bit 4:4:4 panel by just connecting it to the
>> MSB LCD pins.
Jamie> If you're connecting an RGB555 or RGB444 panel, don't you want
Jamie> the software using the framebuffer to know this so it will
Jamie> dither appropriately?
Potentially. This is similar to the issues with cheap 18bit laptop
LCDs. We somewhat do this (E.G. default to 565 mode if a 16bit panel is
used), but as the hardware doesn't support anything bwteen 8bit paletted
and RGB565 modes, there's not much else we can do (fbdev doesn't provide
any info about the panel specs).
--
Bye, Peter Korsgaard
WARNING: multiple messages have this Message-ID (diff)
From: jacmet@sunsite.dk (Peter Korsgaard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes
Date: Tue, 10 Jan 2012 15:19:18 +0100 [thread overview]
Message-ID: <87pqerd4ih.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <20120110140218.GB7180@jl-vm1.vm.bytemark.co.uk> (Jamie Lokier's message of "Tue, 10 Jan 2012 14:02:18 +0000")
>>>>> "Jamie" == Jamie Lokier <jamie@shareable.org> writes:
>> Similar you can connect a 12bit 4:4:4 panel by just connecting it to the
>> MSB LCD pins.
Jamie> If you're connecting an RGB555 or RGB444 panel, don't you want
Jamie> the software using the framebuffer to know this so it will
Jamie> dither appropriately?
Potentially. This is similar to the issues with cheap 18bit laptop
LCDs. We somewhat do this (E.G. default to 565 mode if a 16bit panel is
used), but as the hardware doesn't support anything bwteen 8bit paletted
and RGB565 modes, there's not much else we can do (fbdev doesn't provide
any info about the panel specs).
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2012-01-10 14:19 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-13 14:52 [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Peter Korsgaard
2011-10-13 14:52 ` Peter Korsgaard
2012-01-05 11:26 ` Peter Korsgaard
2012-01-05 11:26 ` Peter Korsgaard
2012-01-09 2:49 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported Florian Tobias Schandinat
2012-01-09 2:49 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Florian Tobias Schandinat
2012-01-09 6:15 ` Peter Korsgaard
2012-01-09 6:15 ` Peter Korsgaard
2012-01-09 13:36 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported Nicolas Ferre
2012-01-09 13:36 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Nicolas Ferre
2012-01-09 10:34 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported Nicolas Ferre
2012-01-09 10:34 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Nicolas Ferre
2012-01-09 11:13 ` Peter Korsgaard
2012-01-09 11:13 ` Peter Korsgaard
2012-01-09 13:32 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported Nicolas Ferre
2012-01-09 13:32 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Nicolas Ferre
2012-01-10 13:01 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove Christian Glindkamp
2012-01-10 13:01 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Christian Glindkamp
2012-01-10 13:17 ` Peter Korsgaard
2012-01-10 13:17 ` Peter Korsgaard
2012-01-10 16:42 ` Peter Korsgaard
2012-01-10 16:42 ` Peter Korsgaard
2012-01-10 14:02 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove Jamie Lokier
2012-01-10 14:02 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Jamie Lokier
2012-01-10 14:19 ` Peter Korsgaard [this message]
2012-01-10 14:19 ` Peter Korsgaard
2012-01-10 21:06 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove Russell King - ARM Linux
2012-01-10 21:06 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Russell King - ARM Linux
2012-01-09 12:13 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove Russell King - ARM Linux
2012-01-09 12:13 ` [PATCH] atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes Russell King - ARM Linux
2012-01-09 12:20 ` Peter Korsgaard
2012-01-09 12:20 ` Peter Korsgaard
2012-01-30 5:12 ` Florian Tobias Schandinat
2012-01-30 5:12 ` Florian Tobias Schandinat
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