[PATCH] framebuffer: new driver for cyberblade/i1 graphics core
This is a framebuffer driver for the Cyberblade/i1 graphics core.
Currently tridenfb claims to support the cyberblade/i1 graphics core. This
is of very limited truth. Even vesafb is faster and provides more working
modes and a much better quality of the video signal. There is a great
number of bugs in tridentfb ... but most often it is impossible to decide
if these bugs are real bugs or if fixing them for the cyberblade/i1 core
would break support for one of the other supported chips.
Tridentfb seems to be unmaintained,and documentation for most of the
supported chips is not available. So "fixing" cyberblade/i1 support inside
of tridentfb was not an option, it would have caused numerous
if(CYBERBLADEi1) else ... cases and would have rendered the code to be
almost unmaintainable.
A first version of this driver was published on 2005-07-31. A fix for a
bug reported by Jochen Hein was integrated as well as some changes
requested by Antonino A. Daplas.
A message has been added to tridentfb to inform current users of tridentfb
to switch to cyblafb if the cyberblade/i1 graphics core is detected.
This patch is one logical change, but because of the included documentation
it is bigger than 70kb. Therefore it is not sent to lkml and
linux-fbdev-devel,
Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Acked-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/video/cyblafb.h b/include/video/cyblafb.h
new file mode 100644
index 0000000..a994823
--- /dev/null
+++ b/include/video/cyblafb.h
@@ -0,0 +1,171 @@
+
+#ifndef CYBLAFB_DEBUG
+#define CYBLAFB_DEBUG 0
+#endif
+
+#if CYBLAFB_DEBUG
+#define debug(f,a...) printk("%s:" f, __FUNCTION__ , ## a);
+#else
+#define debug(f,a...)
+#endif
+
+#define output(f, a...) printk("cyblafb: " f, ## a)
+
+#define Kb (1024)
+#define Mb (Kb*Kb)
+
+/* PCI IDS of supported cards temporarily here */
+
+#define CYBERBLADEi1 0x8500
+
+/* these defines are for 'lcd' variable */
+#define LCD_STRETCH 0
+#define LCD_CENTER 1
+#define LCD_BIOS 2
+
+/* display types */
+#define DISPLAY_CRT 0
+#define DISPLAY_FP 1
+
+#define ROP_S 0xCC
+
+#define point(x,y) ((y)<<16|(x))
+
+//
+// Attribute Regs, ARxx, 3c0/3c1
+//
+#define AR00 0x00
+#define AR01 0x01
+#define AR02 0x02
+#define AR03 0x03
+#define AR04 0x04
+#define AR05 0x05
+#define AR06 0x06
+#define AR07 0x07
+#define AR08 0x08
+#define AR09 0x09
+#define AR0A 0x0A
+#define AR0B 0x0B
+#define AR0C 0x0C
+#define AR0D 0x0D
+#define AR0E 0x0E
+#define AR0F 0x0F
+#define AR10 0x10
+#define AR12 0x12
+#define AR13 0x13
+
+//
+// Sequencer Regs, SRxx, 3c4/3c5
+//
+#define SR00 0x00
+#define SR01 0x01
+#define SR02 0x02
+#define SR03 0x03
+#define SR04 0x04
+#define SR0D 0x0D
+#define SR0E 0x0E
+#define SR11 0x11
+#define SR18 0x18
+#define SR19 0x19
+
+//
+//
+//
+#define CR00 0x00
+#define CR01 0x01
+#define CR02 0x02
+#define CR03 0x03
+#define CR04 0x04
+#define CR05 0x05
+#define CR06 0x06
+#define CR07 0x07
+#define CR08 0x08
+#define CR09 0x09
+#define CR0A 0x0A
+#define CR0B 0x0B
+#define CR0C 0x0C
+#define CR0D 0x0D
+#define CR0E 0x0E
+#define CR0F 0x0F
+#define CR10 0x10
+#define CR11 0x11
+#define CR12 0x12
+#define CR13 0x13
+#define CR14 0x14
+#define CR15 0x15
+#define CR16 0x16
+#define CR17 0x17
+#define CR18 0x18
+#define CR19 0x19
+#define CR1A 0x1A
+#define CR1B 0x1B
+#define CR1C 0x1C
+#define CR1D 0x1D
+#define CR1E 0x1E
+#define CR1F 0x1F
+#define CR20 0x20
+#define CR21 0x21
+#define CR27 0x27
+#define CR29 0x29
+#define CR2A 0x2A
+#define CR2B 0x2B
+#define CR2D 0x2D
+#define CR2F 0x2F
+#define CR36 0x36
+#define CR38 0x38
+#define CR39 0x39
+#define CR3A 0x3A
+#define CR55 0x55
+#define CR56 0x56
+#define CR57 0x57
+#define CR58 0x58
+
+//
+//
+//
+
+#define GR00 0x01
+#define GR01 0x01
+#define GR02 0x02
+#define GR03 0x03
+#define GR04 0x04
+#define GR05 0x05
+#define GR06 0x06
+#define GR07 0x07
+#define GR08 0x08
+#define GR0F 0x0F
+#define GR20 0x20
+#define GR23 0x23
+#define GR2F 0x2F
+#define GR30 0x30
+#define GR31 0x31
+#define GR33 0x33
+#define GR52 0x52
+#define GR53 0x53
+#define GR5D 0x5d
+
+
+//
+// Graphics Engine
+//
+#define GEBase 0x2100 // could be mapped elsewhere if we like it
+#define GE00 (GEBase+0x00) // source 1, p 111
+#define GE04 (GEBase+0x04) // source 2, p 111
+#define GE08 (GEBase+0x08) // destination 1, p 111
+#define GE0C (GEBase+0x0C) // destination 2, p 112
+#define GE20 (GEBase+0x20) // engine status, p 113
+#define GE24 (GEBase+0x24) // reset all GE pointers
+#define GE44 (GEBase+0x44) // command register, p 126
+#define GE48 (GEBase+0x48) // raster operation, p 127
+#define GE60 (GEBase+0x60) // foreground color, p 128
+#define GE64 (GEBase+0x64) // background color, p 128
+#define GE6C (GEBase+0x6C) // Pattern and Style, p 129, ok
+#define GE9C (GEBase+0x9C) // pixel engine data port, p 125
+#define GEB8 (GEBase+0xB8) // Destination Stride / Buffer Base 0, p 133
+#define GEBC (GEBase+0xBC) // Destination Stride / Buffer Base 1, p 133
+#define GEC0 (GEBase+0xC0) // Destination Stride / Buffer Base 2, p 133
+#define GEC4 (GEBase+0xC4) // Destination Stride / Buffer Base 3, p 133
+#define GEC8 (GEBase+0xC8) // Source Stride / Buffer Base 0, p 133
+#define GECC (GEBase+0xCC) // Source Stride / Buffer Base 1, p 133
+#define GED0 (GEBase+0xD0) // Source Stride / Buffer Base 2, p 133
+#define GED4 (GEBase+0xD4) // Source Stride / Buffer Base 3, p 133