From 681e14730c73cc2c71af282c001de6bc71c22f00 Mon Sep 17 00:00:00 2001 From: Ondrej Zajicek Date: Wed, 9 May 2007 02:35:31 -0700 Subject: [PATCH] arkfb: new framebuffer driver for ARK Logic cards This patch adds fbdev driver for graphics cards with ARK Logic 2000PV graphics chip with ICS 5342 ramdac. [adaplas@gmail.com: build fixes] Signed-off-by: Ondrej Zajicek Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/fb/arkfb.txt | 68 ++ drivers/video/Kconfig | 14 + drivers/video/Makefile | 1 + drivers/video/arkfb.c | 1199 ++++++++++++++++++++++++++++++++++++ 4 files changed, 1282 insertions(+) create mode 100644 Documentation/fb/arkfb.txt create mode 100644 drivers/video/arkfb.c diff --git a/Documentation/fb/arkfb.txt b/Documentation/fb/arkfb.txt new file mode 100644 index 000000000000..e8487a9d6a05 --- /dev/null +++ b/Documentation/fb/arkfb.txt @@ -0,0 +1,68 @@ + + arkfb - fbdev driver for ARK Logic chips + ======================================== + + +Supported Hardware +================== + + ARK 2000PV chip + ICS 5342 ramdac + + - only BIOS initialized VGA devices supported + - probably not working on big endian + + +Supported Features +================== + + * 4 bpp pseudocolor modes (with 18bit palette, two variants) + * 8 bpp pseudocolor mode (with 18bit palette) + * 16 bpp truecolor modes (RGB 555 and RGB 565) + * 24 bpp truecolor mode (RGB 888) + * 32 bpp truecolor mode (RGB 888) + * text mode (activated by bpp = 0) + * doublescan mode variant (not available in text mode) + * panning in both directions + * suspend/resume support + +Text mode is supported even in higher resolutions, but there is limitation to +lower pixclocks (i got maximum about 70 MHz, it is dependent on specific +hardware). This limitation is not enforced by driver. Text mode supports 8bit +wide fonts only (hardware limitation) and 16bit tall fonts (driver +limitation). Unfortunately character attributes (like color) in text mode are +broken for unknown reason, so its usefulness is limited. + +There are two 4 bpp modes. First mode (selected if nonstd == 0) is mode with +packed pixels, high nibble first. Second mode (selected if nonstd == 1) is mode +with interleaved planes (1 byte interleave), MSB first. Both modes support +8bit wide fonts only (driver limitation). + +Suspend/resume works on systems that initialize video card during resume and +if device is active (for example used by fbcon). + + +Missing Features +================ +(alias TODO list) + + * secondary (not initialized by BIOS) device support + * big endian support + * DPMS support + * MMIO support + * interlaced mode variant + * support for fontwidths != 8 in 4 bpp modes + * support for fontheight != 16 in text mode + * hardware cursor + * vsync synchronization + * feature connector support + * acceleration support (8514-like 2D) + + +Known bugs +========== + + * character attributes (and cursor) in text mode are broken + +-- +Ondrej Zajicek diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 7e5010dcaff5..9a256d2ff9dc 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -1415,6 +1415,20 @@ config FB_TRIDENT_ACCEL This will compile the Trident frame buffer device with acceleration functions. +config FB_ARK + tristate "ARK 2000PV support" + depends on FB && PCI + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT + select FB_TILEBLITTING + select FB_SVGALIB + select VGASTATE + select FONT_8x16 if FRAMEBUFFER_CONSOLE + ---help--- + Driver for PCI graphics boards with ARK 2000PV chip + and ICS 5342 RAMDAC. + config FB_PM3 tristate "Permedia3 support" depends on FB && PCI && BROKEN diff --git a/drivers/video/Makefile b/drivers/video/Makefile index c0c61468094d..0b70567458fb 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -59,6 +59,7 @@ obj-$(CONFIG_FB_CYBLA) += cyblafb.o obj-$(CONFIG_FB_TRIDENT) += tridentfb.o obj-$(CONFIG_FB_LE80578) += vermilion/ obj-$(CONFIG_FB_S3) += s3fb.o +obj-$(CONFIG_FB_ARK) += arkfb.o obj-$(CONFIG_FB_STI) += stifb.o obj-$(CONFIG_FB_FFB) += ffb.o sbuslib.o obj-$(CONFIG_FB_CG6) += cg6.o sbuslib.o diff --git a/drivers/video/arkfb.c b/drivers/video/arkfb.c new file mode 100644 index 000000000000..9288dd11dcef --- /dev/null +++ b/drivers/video/arkfb.c @@ -0,0 +1,1199 @@ +/* + * linux/drivers/video/arkfb.c -- Frame buffer device driver for ARK 2000PV + * with ICS 5342 dac (it is easy to add support for different dacs). + * + * Copyright (c) 2007 Ondrej Zajicek + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + * + * Code is based on s3fb + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* Why should fb driver call console functions? because acquire_console_sem() */ +#include