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Subject[PATCH] clgenfb on PPC
Hey all.  While going through the 2.4 tree and removing dead CONFIG_xxx's for
PPC stuff, I noticed clgenfb still had CONFIG_PREP stuff (which may have
partily explained why it no longer worked here). I've attached a patch, that
with another patch to fix some PCI issues on certain machines, gives me a
working (so far, can't test heavily yet tho) framebuffer on my powerstack.

Comments?

Also, rivafb needs something similar to this, but since no PReP boxes I know
of anyways ship with something rivafb controlls, it's probably easier to just
remove the bits inside CONFIG_PREP

--
Tom Rini (TR1265)
http://gate.crashing.org/~trini/
# This is a BitKeeper generated patch for the following project:
# Project Name:
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.393.1.12 -> 1.393.1.13
# drivers/video/clgenfb.c 1.19 -> 1.20
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 00/12/27 trini@entropy.crashing.org 1.393.1.13
# Fix up clgenfb.
# --------------------------------------------
#
diff -Nru a/drivers/video/clgenfb.c b/drivers/video/clgenfb.c
--- a/drivers/video/clgenfb.c Tue Jan 2 09:42:09 2001
+++ b/drivers/video/clgenfb.c Tue Jan 2 09:42:09 2001
@@ -56,6 +56,12 @@
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#endif
+#ifdef CONFIG_ALL_PPC
+#include <asm/processor.h>
+#define isPReP (_machine == _MACH_prep)
+#else
+#define isPReP 0
+#endif

#include <video/fbcon.h>
#include <video/fbcon-mfb.h>
@@ -876,15 +882,15 @@
case 16:
_par->line_length = _par->var.xres_virtual * 2;
_par->visual = FB_VISUAL_DIRECTCOLOR;
-#ifdef CONFIG_PREP
- _par->var.red.offset = 2;
- _par->var.green.offset = -3;
- _par->var.blue.offset = 8;
-#else
- _par->var.red.offset = 10;
- _par->var.green.offset = 5;
- _par->var.blue.offset = 0;
-#endif
+ if(isPReP) {
+ _par->var.red.offset = 2;
+ _par->var.green.offset = -3;
+ _par->var.blue.offset = 8;
+ } else {
+ _par->var.red.offset = 10;
+ _par->var.green.offset = 5;
+ _par->var.blue.offset = 0;
+ }
_par->var.red.length = 5;
_par->var.green.length = 5;
_par->var.blue.length = 5;
@@ -893,15 +899,15 @@
case 24:
_par->line_length = _par->var.xres_virtual * 3;
_par->visual = FB_VISUAL_DIRECTCOLOR;
-#ifdef CONFIG_PREP
- _par->var.red.offset = 8;
- _par->var.green.offset = 16;
- _par->var.blue.offset = 24;
-#else
- _par->var.red.offset = 16;
- _par->var.green.offset = 8;
- _par->var.blue.offset = 0;
-#endif
+ if(isPReP) {
+ _par->var.red.offset = 8;
+ _par->var.green.offset = 16;
+ _par->var.blue.offset = 24;
+ } else {
+ _par->var.red.offset = 16;
+ _par->var.green.offset = 8;
+ _par->var.blue.offset = 0;
+ }
_par->var.red.length = 8;
_par->var.green.length = 8;
_par->var.blue.length = 8;
@@ -910,15 +916,15 @@
case 32:
_par->line_length = _par->var.xres_virtual * 4;
_par->visual = FB_VISUAL_DIRECTCOLOR;
-#ifdef CONFIG_PREP
- _par->var.red.offset = 8;
- _par->var.green.offset = 16;
- _par->var.blue.offset = 24;
-#else
- _par->var.red.offset = 16;
- _par->var.green.offset = 8;
- _par->var.blue.offset = 0;
-#endif
+ if(isPReP) {
+ _par->var.red.offset = 8;
+ _par->var.green.offset = 16;
+ _par->var.blue.offset = 24;
+ } else {
+ _par->var.red.offset = 16;
+ _par->var.green.offset = 8;
+ _par->var.blue.offset = 0;
+ }
_par->var.red.length = 8;
_par->var.green.length = 8;
_par->var.blue.length = 8;
@@ -1680,18 +1686,18 @@
#ifdef FBCON_HAS_CFB16
case 16:
assert (regno < 16);
-#ifdef CONFIG_PREP
- fb_info->fbcon_cmap.cfb16[regno] =
- ((red & 0xf800) >> 9) |
- ((green & 0xf800) >> 14) |
- ((green & 0xf800) << 2) |
- ((blue & 0xf800) >> 3);
-#else
- fb_info->fbcon_cmap.cfb16[regno] =
- ((red & 0xf800) >> 1) |
- ((green & 0xf800) >> 6) |
- ((blue & 0xf800) >> 11);
-#endif
+ if(isPReP) {
+ fb_info->fbcon_cmap.cfb16[regno] =
+ ((red & 0xf800) >> 9) |
+ ((green & 0xf800) >> 14) |
+ ((green & 0xf800) << 2) |
+ ((blue & 0xf800) >> 3);
+ } else {
+ fb_info->fbcon_cmap.cfb16[regno] =
+ ((red & 0xf800) >> 1) |
+ ((green & 0xf800) >> 6) |
+ ((blue & 0xf800) >> 11);
+ }
#endif /* FBCON_HAS_CFB16 */

#ifdef FBCON_HAS_CFB24
@@ -1707,17 +1713,17 @@
#ifdef FBCON_HAS_CFB32
case 32:
assert (regno < 16);
-#ifdef CONFIG_PREP
- fb_info->fbcon_cmap.cfb32[regno] =
- ((red & 0xff00)) |
- ((green & 0xff00) << 8) |
- ((blue & 0xff00) << 16);
-#else
- fb_info->fbcon_cmap.cfb32[regno] =
- ((red & 0xff00) << 8) |
- ((green & 0xff00)) |
- ((blue & 0xff00) >> 8);
-#endif
+ if(isPReP) {
+ fb_info->fbcon_cmap.cfb32[regno] =
+ ((red & 0xff00)) |
+ ((green & 0xff00) << 8) |
+ ((blue & 0xff00) << 16);
+ } else {
+ fb_info->fbcon_cmap.cfb32[regno] =
+ ((red & 0xff00) << 8) |
+ ((green & 0xff00)) |
+ ((blue & 0xff00) >> 8);
+ }
break;
#endif /* FBCON_HAS_CFB32 */
default:
@@ -2374,7 +2380,7 @@



-#ifdef CONFIG_PREP
+#ifdef CONFIG_ALL_PPC
#define PREP_VIDEO_BASE ((volatile unsigned long) 0xC0000000)
#define PREP_IO_BASE ((volatile unsigned char *) 0x80000000)
static void __init get_prep_addrs (unsigned long *display, unsigned long *registers)
@@ -2387,7 +2393,7 @@
DPRINTK ("EXIT\n");
}

-#endif /* CONFIG_PREP */
+#endif /* CONFIG_ALL_PPC */



@@ -2510,26 +2516,24 @@

info->pdev = pdev;

-#ifdef CONFIG_PREP
- /* Xbh does this, though 0 seems to be the init value */
- pcibios_write_config_dword (0, pdev->devfn, PCI_BASE_ADDRESS_0, 0x00000000);
-#endif
+ if(isPReP) {
+ /* Xbh does this, though 0 seems to be the init value */
+ pcibios_write_config_dword (0, pdev->devfn, PCI_BASE_ADDRESS_0,
+ 0x00000000);

-#ifdef CONFIG_PREP
- get_prep_addrs (&board_addr, &info->fbregs_phys);
-#else /* CONFIG_PREP */
- DPRINTK ("Attempt to get PCI info for Cirrus Graphics Card\n");
- get_pci_addrs (pdev, &board_addr, &info->fbregs_phys);
-#endif /* CONFIG_PREP */
+ get_prep_addrs (&board_addr, &info->fbregs_phys);
+ } else {
+ DPRINTK ("Attempt to get PCI info for Cirrus Graphics Card\n");
+ get_pci_addrs (pdev, &board_addr, &info->fbregs_phys);
+ }

DPRINTK ("Board address: 0x%lx, register address: 0x%lx\n", board_addr, info->fbregs_phys);

-#ifdef CONFIG_PREP
- /* PReP dies if we ioremap the IO registers, but it works w/out... */
- info->regs = (char *) info->fbregs_phys;
-#else
- info->regs = 0; /* FIXME: this forces VGA. alternatives? */
-#endif
+ if(isPReP) {
+ /* PReP dies if we ioremap the IO registers, but it works w/out... */
+ info->regs = (char *) info->fbregs_phys;
+ } else
+ info->regs = 0; /* FIXME: this forces VGA. alternatives? */

if (*btype == BT_GD5480) {
board_size = 32 * MB_;
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