Re: HP300 support checked in
flat view
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2004-07-13 08:08:28
On Sun, 11 Jul 2004, Kars de Jong wrote:
Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 13:03:41 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
--i6CB3kXJ003893.1089630226/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 16:24:28 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 13:03:41 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
--i6CB3kXJ003893.1089630226/witte.sonytel.be--
--i6CEOWXJ026457.1089642272/witte.sonytel.be--
ReSent-Date: Tue, 13 Jul 2004 10:08:20 +0200 (MEST)
ReSent-From: Geert Uytterhoeven [off-list ref]
ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
ReSent-Subject: Re: HP300 support checked in
ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 13:03:41 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
--i6CB3kXJ003893.1089630226/witte.sonytel.be--
ReSent-Date: Mon, 12 Jul 2004 16:24:28 +0200 (MEST)
ReSent-From: Geert Uytterhoeven [off-list ref]
ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
ReSent-Subject: Re: HP300 support checked in
ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
X-ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
X-ReSent-From: Geert Uytterhoeven [off-list ref]
X-ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
X-ReSent-Subject: Re: HP300 support checked in
X-ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
ReSent-Date: Mon, 12 Jul 2004 13:03:41 +0200 (MEST)
ReSent-From: Geert Uytterhoeven [off-list ref]
ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
ReSent-Subject: Re: HP300 support checked in
ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
ReSent-Date: Mon, 12 Jul 2004 09:44:53 +0200 (MEST)
ReSent-From: Geert Uytterhoeven [off-list ref]
ReSent-To:
Linux Frame Buffer Device Development [off-list ref]
ReSent-Subject: Re: HP300 support checked in
ReSent-Message-ID: [off-list ref]
On Sun, 11 Jul 2004, Kars de Jong wrote:Support for <8 bit framebuffers is probably broken. I don't know how I'm going to support them yet. It used to be "special-cased" in drivers/video/fbcon.c. They are laid out in memory like normal 8 bit chunky framebuffers, but the upper bits are basically ignored. So for blitting purposes the bits_per_pixel == 8 code should be used, but just setting bits_per_pixel to 8 doesn't work because then the amount of colours is assumed to be 256. I think we basically need to distinguish between bpp and depth.
What are the possible values of depth? Just 1 (monochrome)? Or also 4 (16
colors)?
If it's just 1 (monochrome), you can probably get away with setting
var.bits_per_pixel = 256 and fix.visual = FB_VISUAL_MONO01 (or MONO10).
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--i6C7PIXJ008765.1089617118/witte.sonytel.be--
--i6C7ivXJ010717.1089618297/witte.sonytel.be--
--i6CB3kXJ003893.1089630226/witte.sonytel.be--
--i6CEOWXJ026457.1089642272/witte.sonytel.be--
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