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OpenCloudOS-Kernel/drivers/video/fbdev/macfb.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
* don't know how to set.
*
* (c) 1999 David Huggins-Daines <dhd@debian.org>
*
* Primarily based on vesafb.c, by Gerd Knorr
* (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de>
*
* Also uses information and code from:
*
* The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
* Mellinger, Mikael Forselius, Michael Schmitz, and others.
*
* valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
* Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
*
* The VideoToolbox "Bugs" web page at
* http://rajsky.psych.nyu.edu/Tips/VideoBugs.html
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/delay.h>
#include <linux/nubus.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <asm/setup.h>
#include <asm/macintosh.h>
#include <asm/io.h>
/* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
#define DAC_BASE 0x50f24000
/* Some addresses for the DAFB */
#define DAFB_BASE 0xf9800200
/* Address for the built-in Civic framebuffer in Quadra AVs */
#define CIVIC_BASE 0x50f30800
/* GSC (Gray Scale Controller) base address */
#define GSC_BASE 0x50F20000
/* CSC (Color Screen Controller) base address */
#define CSC_BASE 0x50F20000
static int (*macfb_setpalette)(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info);
static struct {
unsigned char addr;
unsigned char lut;
} __iomem *v8_brazil_cmap_regs;
static struct {
unsigned char addr;
char pad1[3]; /* word aligned */
unsigned char lut;
char pad2[3]; /* word aligned */
unsigned char cntl; /* a guess as to purpose */
} __iomem *rbv_cmap_regs;
static struct {
unsigned long reset;
unsigned long pad1[3];
unsigned char pad2[3];
unsigned char lut;
} __iomem *dafb_cmap_regs;
static struct {
unsigned char addr; /* OFFSET: 0x00 */
unsigned char pad1[15];
unsigned char lut; /* OFFSET: 0x10 */
unsigned char pad2[15];
unsigned char status; /* OFFSET: 0x20 */
unsigned char pad3[7];
unsigned long vbl_addr; /* OFFSET: 0x28 */
unsigned int status2; /* OFFSET: 0x2C */
} __iomem *civic_cmap_regs;
static struct {
char pad1[0x40];
unsigned char clut_waddr; /* 0x40 */
char pad2;
unsigned char clut_data; /* 0x42 */
char pad3[0x3];
unsigned char clut_raddr; /* 0x46 */
} __iomem *csc_cmap_regs;
/* The registers in these structs are in NuBus slot space */
struct mdc_cmap_regs {
char pad1[0x200200];
unsigned char addr;
char pad2[6];
unsigned char lut;
};
struct toby_cmap_regs {
char pad1[0x90018];
unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
char pad2[3];
unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
};
struct jet_cmap_regs {
char pad1[0xe0e000];
unsigned char addr;
unsigned char lut;
};
#define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */
static struct fb_var_screeninfo macfb_defined = {
.activate = FB_ACTIVATE_NOW,
.right_margin = 32,
.upper_margin = 16,
.lower_margin = 4,
.vsync_len = 4,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo macfb_fix = {
.type = FB_TYPE_PACKED_PIXELS,
.accel = FB_ACCEL_NONE,
};
static void *slot_addr;
static struct fb_info fb_info;
static u32 pseudo_palette[16];
static int vidtest;
/*
* Unlike the Valkyrie, the DAFB cannot set individual colormap
* registers. Therefore, we do what the MacOS driver does (no
* kidding!) and simply set them one by one until we hit the one we
* want.
*/
static int dafb_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
static int lastreg = -2;
unsigned long flags;
local_irq_save(flags);
/*
* fbdev will set an entire colourmap, but X won't. Hopefully
* this should accommodate both of them
*/
if (regno != lastreg + 1) {
int i;
/* Stab in the dark trying to reset the CLUT pointer */
nubus_writel(0, &dafb_cmap_regs->reset);
nop();
/* Loop until we get to the register we want */
for (i = 0; i < regno; i++) {
nubus_writeb(info->cmap.red[i] >> 8,
&dafb_cmap_regs->lut);
nop();
nubus_writeb(info->cmap.green[i] >> 8,
&dafb_cmap_regs->lut);
nop();
nubus_writeb(info->cmap.blue[i] >> 8,
&dafb_cmap_regs->lut);
nop();
}
}
nubus_writeb(red, &dafb_cmap_regs->lut);
nop();
nubus_writeb(green, &dafb_cmap_regs->lut);
nop();
nubus_writeb(blue, &dafb_cmap_regs->lut);
local_irq_restore(flags);
lastreg = regno;
return 0;
}
/* V8 and Brazil seem to use the same DAC. Sonora does as well. */
static int v8_brazil_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
unsigned int bpp = info->var.bits_per_pixel;
unsigned long flags;
local_irq_save(flags);
/* On these chips, the CLUT register numbers are spread out
* across the register space. Thus:
* In 8bpp, all regnos are valid.
* In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
* In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff
*/
regno = (regno << (8 - bpp)) | (0xFF >> bpp);
nubus_writeb(regno, &v8_brazil_cmap_regs->addr);
nop();
/* send one color channel at a time */
nubus_writeb(red, &v8_brazil_cmap_regs->lut);
nop();
nubus_writeb(green, &v8_brazil_cmap_regs->lut);
nop();
nubus_writeb(blue, &v8_brazil_cmap_regs->lut);
local_irq_restore(flags);
return 0;
}
/* RAM-Based Video */
static int rbv_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
unsigned long flags;
local_irq_save(flags);
/* From the VideoToolbox driver. Seems to be saying that
* regno #254 and #255 are the important ones for 1-bit color,
* regno #252-255 are the important ones for 2-bit color, etc.
*/
regno += 256 - (1 << info->var.bits_per_pixel);
/* reset clut? (VideoToolbox sez "not necessary") */
nubus_writeb(0xFF, &rbv_cmap_regs->cntl);
nop();
/* tell clut which address to use. */
nubus_writeb(regno, &rbv_cmap_regs->addr);
nop();
/* send one color channel at a time. */
nubus_writeb(red, &rbv_cmap_regs->lut);
nop();
nubus_writeb(green, &rbv_cmap_regs->lut);
nop();
nubus_writeb(blue, &rbv_cmap_regs->lut);
local_irq_restore(flags);
return 0;
}
/* Macintosh Display Card (8*24) */
static int mdc_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
struct mdc_cmap_regs *cmap_regs = slot_addr;
unsigned long flags;
local_irq_save(flags);
/* the nop's are there to order writes. */
nubus_writeb(regno, &cmap_regs->addr);
nop();
nubus_writeb(red, &cmap_regs->lut);
nop();
nubus_writeb(green, &cmap_regs->lut);
nop();
nubus_writeb(blue, &cmap_regs->lut);
local_irq_restore(flags);
return 0;
}
/* Toby frame buffer */
static int toby_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
struct toby_cmap_regs *cmap_regs = slot_addr;
unsigned int bpp = info->var.bits_per_pixel;
unsigned long flags;
red = ~red;
green = ~green;
blue = ~blue;
regno = (regno << (8 - bpp)) | (0xFF >> bpp);
local_irq_save(flags);
nubus_writeb(regno, &cmap_regs->addr);
nop();
nubus_writeb(red, &cmap_regs->lut);
nop();
nubus_writeb(green, &cmap_regs->lut);
nop();
nubus_writeb(blue, &cmap_regs->lut);
local_irq_restore(flags);
return 0;
}
/* Jet frame buffer */
static int jet_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
struct jet_cmap_regs *cmap_regs = slot_addr;
unsigned long flags;
local_irq_save(flags);
nubus_writeb(regno, &cmap_regs->addr);
nop();
nubus_writeb(red, &cmap_regs->lut);
nop();
nubus_writeb(green, &cmap_regs->lut);
nop();
nubus_writeb(blue, &cmap_regs->lut);
local_irq_restore(flags);
return 0;
}
/*
* Civic framebuffer -- Quadra AV built-in video. A chip
* called Sebastian holds the actual color palettes, and
* apparently, there are two different banks of 512K RAM
* which can act as separate framebuffers for doing video
* input and viewing the screen at the same time! The 840AV
* Can add another 1MB RAM to give the two framebuffers
* 1MB RAM apiece.
*/
static int civic_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
unsigned long flags;
int clut_status;
local_irq_save(flags);
/* Set the register address */
nubus_writeb(regno, &civic_cmap_regs->addr);
nop();
/*
* Grab a status word and do some checking;
* Then finally write the clut!
*/
clut_status = nubus_readb(&civic_cmap_regs->status2);
if ((clut_status & 0x0008) == 0)
{
#if 0
if ((clut_status & 0x000D) != 0)
{
nubus_writeb(0x00, &civic_cmap_regs->lut);
nop();
nubus_writeb(0x00, &civic_cmap_regs->lut);
nop();
}
#endif
nubus_writeb(red, &civic_cmap_regs->lut);
nop();
nubus_writeb(green, &civic_cmap_regs->lut);
nop();
nubus_writeb(blue, &civic_cmap_regs->lut);
nop();
nubus_writeb(0x00, &civic_cmap_regs->lut);
}
else
{
unsigned char junk;
junk = nubus_readb(&civic_cmap_regs->lut);
nop();
junk = nubus_readb(&civic_cmap_regs->lut);
nop();
junk = nubus_readb(&civic_cmap_regs->lut);
nop();
junk = nubus_readb(&civic_cmap_regs->lut);
nop();
if ((clut_status & 0x000D) != 0)
{
nubus_writeb(0x00, &civic_cmap_regs->lut);
nop();
nubus_writeb(0x00, &civic_cmap_regs->lut);
nop();
}
nubus_writeb(red, &civic_cmap_regs->lut);
nop();
nubus_writeb(green, &civic_cmap_regs->lut);
nop();
nubus_writeb(blue, &civic_cmap_regs->lut);
nop();
nubus_writeb(junk, &civic_cmap_regs->lut);
}
local_irq_restore(flags);
return 0;
}
/*
* The CSC is the framebuffer on the PowerBook 190 series
* (and the 5300 too, but that's a PowerMac). This function
* brought to you in part by the ECSC driver for MkLinux.
*/
static int csc_setpalette(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
struct fb_info *info)
{
unsigned long flags;
local_irq_save(flags);
udelay(1); /* mklinux on PB 5300 waits for 260 ns */
nubus_writeb(regno, &csc_cmap_regs->clut_waddr);
nubus_writeb(red, &csc_cmap_regs->clut_data);
nubus_writeb(green, &csc_cmap_regs->clut_data);
nubus_writeb(blue, &csc_cmap_regs->clut_data);
local_irq_restore(flags);
return 0;
}
static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info *fb_info)
{
/*
* Set a single color register. The values supplied are
* already rounded down to the hardware's capabilities
* (according to the entries in the `var' structure).
* Return non-zero for invalid regno.
*/
if (regno >= fb_info->cmap.len)
return 1;
if (fb_info->var.bits_per_pixel <= 8) {
switch (fb_info->var.bits_per_pixel) {
case 1:
/* We shouldn't get here */
break;
case 2:
case 4:
case 8:
if (macfb_setpalette)
macfb_setpalette(regno, red >> 8, green >> 8,
blue >> 8, fb_info);
else
return 1;
break;
}
} else if (regno < 16) {
switch (fb_info->var.bits_per_pixel) {
case 16:
if (fb_info->var.red.offset == 10) {
/* 1:5:5:5 */
((u32*) (fb_info->pseudo_palette))[regno] =
((red & 0xf800) >> 1) |
((green & 0xf800) >> 6) |
((blue & 0xf800) >> 11) |
((transp != 0) << 15);
} else {
/* 0:5:6:5 */
((u32*) (fb_info->pseudo_palette))[regno] =
((red & 0xf800) >> 0) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
}
break;
/*
* 24-bit colour almost doesn't exist on 68k Macs --
* http://support.apple.com/kb/TA28634 (Old Article: 10992)
*/
case 24:
case 32:
red >>= 8;
green >>= 8;
blue >>= 8;
((u32 *)(fb_info->pseudo_palette))[regno] =
(red << fb_info->var.red.offset) |
(green << fb_info->var.green.offset) |
(blue << fb_info->var.blue.offset);
break;
}
}
return 0;
}
static struct fb_ops macfb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = macfb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
static void __init macfb_setup(char *options)
{
char *this_opt;
if (!options || !*options)
return;
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt)
continue;
if (!strcmp(this_opt, "inverse"))
fb_invert_cmaps();
else
if (!strcmp(this_opt, "vidtest"))
vidtest = 1; /* enable experimental CLUT code */
}
}
static void __init iounmap_macfb(void)
{
if (dafb_cmap_regs)
iounmap(dafb_cmap_regs);
if (v8_brazil_cmap_regs)
iounmap(v8_brazil_cmap_regs);
if (rbv_cmap_regs)
iounmap(rbv_cmap_regs);
if (civic_cmap_regs)
iounmap(civic_cmap_regs);
if (csc_cmap_regs)
iounmap(csc_cmap_regs);
}
static int __init macfb_init(void)
{
int video_cmap_len, video_is_nubus = 0;
struct nubus_rsrc *ndev = NULL;
char *option = NULL;
int err;
if (fb_get_options("macfb", &option))
return -ENODEV;
macfb_setup(option);
if (!MACH_IS_MAC)
return -ENODEV;
if (mac_bi_data.id == MAC_MODEL_Q630 ||
mac_bi_data.id == MAC_MODEL_P588)
return -ENODEV; /* See valkyriefb.c */
macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF;
macfb_defined.yres = mac_bi_data.dimensions >> 16;
macfb_defined.bits_per_pixel = mac_bi_data.videodepth;
macfb_fix.line_length = mac_bi_data.videorow;
macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres;
/* Note: physical address (since 2.1.127) */
macfb_fix.smem_start = mac_bi_data.videoaddr;
/*
* This is actually redundant with the initial mappings.
* However, there are some non-obvious aspects to the way
* those mappings are set up, so this is in fact the safest
* way to ensure that this driver will work on every possible Mac
*/
fb_info.screen_base = ioremap(mac_bi_data.videoaddr,
macfb_fix.smem_len);
if (!fb_info.screen_base)
return -ENODEV;
pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n",
macfb_fix.smem_start, fb_info.screen_base,
macfb_fix.smem_len / 1024);
pr_info("macfb: mode is %dx%dx%d, linelength=%d\n",
macfb_defined.xres, macfb_defined.yres,
macfb_defined.bits_per_pixel, macfb_fix.line_length);
/* Fill in the available video resolution */
macfb_defined.xres_virtual = macfb_defined.xres;
macfb_defined.yres_virtual = macfb_defined.yres;
macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres);
macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres);
/* Some dummy values for timing to make fbset happy */
macfb_defined.pixclock = 10000000 / macfb_defined.xres *
1000 / macfb_defined.yres;
macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8;
macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8;
switch (macfb_defined.bits_per_pixel) {
case 1:
macfb_defined.red.length = macfb_defined.bits_per_pixel;
macfb_defined.green.length = macfb_defined.bits_per_pixel;
macfb_defined.blue.length = macfb_defined.bits_per_pixel;
video_cmap_len = 2;
macfb_fix.visual = FB_VISUAL_MONO01;
break;
case 2:
case 4:
case 8:
macfb_defined.red.length = macfb_defined.bits_per_pixel;
macfb_defined.green.length = macfb_defined.bits_per_pixel;
macfb_defined.blue.length = macfb_defined.bits_per_pixel;
video_cmap_len = 1 << macfb_defined.bits_per_pixel;
macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
break;
case 16:
macfb_defined.transp.offset = 15;
macfb_defined.transp.length = 1;
macfb_defined.red.offset = 10;
macfb_defined.red.length = 5;
macfb_defined.green.offset = 5;
macfb_defined.green.length = 5;
macfb_defined.blue.offset = 0;
macfb_defined.blue.length = 5;
video_cmap_len = 16;
/*
* Should actually be FB_VISUAL_DIRECTCOLOR, but this
* works too
*/
macfb_fix.visual = FB_VISUAL_TRUECOLOR;
break;
case 24:
case 32:
macfb_defined.red.offset = 16;
macfb_defined.red.length = 8;
macfb_defined.green.offset = 8;
macfb_defined.green.length = 8;
macfb_defined.blue.offset = 0;
macfb_defined.blue.length = 8;
video_cmap_len = 16;
macfb_fix.visual = FB_VISUAL_TRUECOLOR;
break;
default:
pr_err("macfb: unknown or unsupported bit depth: %d\n",
macfb_defined.bits_per_pixel);
err = -EINVAL;
goto fail_unmap;
}
/*
* We take a wild guess that if the video physical address is
* in nubus slot space, that the nubus card is driving video.
* Penguin really ought to tell us whether we are using internal
* video or not.
* Hopefully we only find one of them. Otherwise our NuBus
* code is really broken :-)
*/
for_each_func_rsrc(ndev) {
unsigned long base = ndev->board->slot_addr;
if (mac_bi_data.videoaddr < base ||
mac_bi_data.videoaddr - base > 0xFFFFFF)
continue;
if (ndev->category != NUBUS_CAT_DISPLAY ||
ndev->type != NUBUS_TYPE_VIDEO)
continue;
video_is_nubus = 1;
slot_addr = (unsigned char *)base;
switch(ndev->dr_hw) {
case NUBUS_DRHW_APPLE_MDC:
strcpy(macfb_fix.id, "Mac Disp. Card");
macfb_setpalette = mdc_setpalette;
break;
case NUBUS_DRHW_APPLE_TFB:
strcpy(macfb_fix.id, "Toby");
macfb_setpalette = toby_setpalette;
break;
case NUBUS_DRHW_APPLE_JET:
strcpy(macfb_fix.id, "Jet");
macfb_setpalette = jet_setpalette;
break;
default:
strcpy(macfb_fix.id, "Generic NuBus");
break;
}
}
/* If it's not a NuBus card, it must be internal video */
if (!video_is_nubus)
switch (mac_bi_data.id) {
/*
* DAFB Quadras
* Note: these first four have the v7 DAFB, which is
* known to be rather unlike the ones used in the
* other models
*/
case MAC_MODEL_P475:
case MAC_MODEL_P475F:
case MAC_MODEL_P575:
case MAC_MODEL_Q605:
case MAC_MODEL_Q800:
case MAC_MODEL_Q650:
case MAC_MODEL_Q610:
case MAC_MODEL_C650:
case MAC_MODEL_C610:
case MAC_MODEL_Q700:
case MAC_MODEL_Q900:
case MAC_MODEL_Q950:
strcpy(macfb_fix.id, "DAFB");
macfb_setpalette = dafb_setpalette;
dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
break;
/*
* LC II uses the V8 framebuffer
*/
case MAC_MODEL_LCII:
strcpy(macfb_fix.id, "V8");
macfb_setpalette = v8_brazil_setpalette;
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
break;
/*
* IIvi, IIvx use the "Brazil" framebuffer (which is
* very much like the V8, it seems, and probably uses
* the same DAC)
*/
case MAC_MODEL_IIVI:
case MAC_MODEL_IIVX:
case MAC_MODEL_P600:
strcpy(macfb_fix.id, "Brazil");
macfb_setpalette = v8_brazil_setpalette;
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
break;
/*
* LC III (and friends) use the Sonora framebuffer
* Incidentally this is also used in the non-AV models
* of the x100 PowerMacs
* These do in fact seem to use the same DAC interface
* as the LC II.
*/
case MAC_MODEL_LCIII:
case MAC_MODEL_P520:
case MAC_MODEL_P550:
case MAC_MODEL_P460:
strcpy(macfb_fix.id, "Sonora");
macfb_setpalette = v8_brazil_setpalette;
v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
break;
/*
* IIci and IIsi use the infamous RBV chip
* (the IIsi is just a rebadged and crippled
* IIci in a different case, BTW)
*/
case MAC_MODEL_IICI:
case MAC_MODEL_IISI:
strcpy(macfb_fix.id, "RBV");
macfb_setpalette = rbv_setpalette;
rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
break;
/*
* AVs use the Civic framebuffer
*/
case MAC_MODEL_Q840:
case MAC_MODEL_C660:
strcpy(macfb_fix.id, "Civic");
macfb_setpalette = civic_setpalette;
civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
break;
/*
* Assorted weirdos
* We think this may be like the LC II
*/
case MAC_MODEL_LC:
strcpy(macfb_fix.id, "LC");
if (vidtest) {
macfb_setpalette = v8_brazil_setpalette;
v8_brazil_cmap_regs =
ioremap(DAC_BASE, 0x1000);
}
break;
/*
* We think this may be like the LC II
*/
case MAC_MODEL_CCL:
strcpy(macfb_fix.id, "Color Classic");
if (vidtest) {
macfb_setpalette = v8_brazil_setpalette;
v8_brazil_cmap_regs =
ioremap(DAC_BASE, 0x1000);
}
break;
/*
* And we *do* mean "weirdos"
*/
case MAC_MODEL_TV:
strcpy(macfb_fix.id, "Mac TV");
break;
/*
* These don't have colour, so no need to worry
*/
case MAC_MODEL_SE30:
case MAC_MODEL_CLII:
strcpy(macfb_fix.id, "Monochrome");
break;
/*
* Powerbooks are particularly difficult. Many of
* them have separate framebuffers for external and
* internal video, which is admittedly pretty cool,
* but will be a bit of a headache to support here.
* Also, many of them are grayscale, and we don't
* really support that.
*/
/*
* Slot 0 ROM says TIM. No external video. B&W.
*/
case MAC_MODEL_PB140:
case MAC_MODEL_PB145:
case MAC_MODEL_PB170:
strcpy(macfb_fix.id, "DDC");
break;
/*
* Internal is GSC, External (if present) is ViSC
*/
case MAC_MODEL_PB150: /* no external video */
case MAC_MODEL_PB160:
case MAC_MODEL_PB165:
case MAC_MODEL_PB180:
case MAC_MODEL_PB210:
case MAC_MODEL_PB230:
strcpy(macfb_fix.id, "GSC");
break;
/*
* Internal is TIM, External is ViSC
*/
case MAC_MODEL_PB165C:
case MAC_MODEL_PB180C:
strcpy(macfb_fix.id, "TIM");
break;
/*
* Internal is CSC, External is Keystone+Ariel.
*/
case MAC_MODEL_PB190: /* external video is optional */
case MAC_MODEL_PB520:
case MAC_MODEL_PB250:
case MAC_MODEL_PB270C:
case MAC_MODEL_PB280:
case MAC_MODEL_PB280C:
strcpy(macfb_fix.id, "CSC");
macfb_setpalette = csc_setpalette;
csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
break;
default:
strcpy(macfb_fix.id, "Unknown");
break;
}
fb_info.fbops = &macfb_ops;
fb_info.var = macfb_defined;
fb_info.fix = macfb_fix;
fb_info.pseudo_palette = pseudo_palette;
fb_info.flags = FBINFO_DEFAULT;
err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
if (err)
goto fail_unmap;
err = register_framebuffer(&fb_info);
if (err)
goto fail_dealloc;
fb_info(&fb_info, "%s frame buffer device\n", fb_info.fix.id);
return 0;
fail_dealloc:
fb_dealloc_cmap(&fb_info.cmap);
fail_unmap:
iounmap(fb_info.screen_base);
iounmap_macfb();
return err;
}
module_init(macfb_init);
MODULE_LICENSE("GPL");
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