diff options
Diffstat (limited to 'drivers/video/macfb.c')
| -rw-r--r-- | drivers/video/macfb.c | 970 |
1 files changed, 970 insertions, 0 deletions
diff --git a/drivers/video/macfb.c b/drivers/video/macfb.c new file mode 100644 index 00000000000..4945a4c0220 --- /dev/null +++ b/drivers/video/macfb.c @@ -0,0 +1,970 @@ +/* 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. + + This code is free software. You may copy, modify, and distribute + it subject to the terms and conditions of the GNU General Public + License, version 2, or any later version, at your convenience. */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/nubus.h> +#include <linux/init.h> +#include <linux/fb.h> + +#include <asm/setup.h> +#include <asm/bootinfo.h> +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/macintosh.h> +#include <asm/io.h> +#include <asm/machw.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 /* Only tested on 660AV! */ + +/* 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) = NULL; +static int valkyrie_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info); +static int dafb_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); +static int rbv_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); +static int mdc_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); +static int toby_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); +static int civic_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); +static int csc_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *fb_info); + +static volatile struct { + unsigned char addr; + /* Note: word-aligned */ + char pad[3]; + unsigned char lut; +} *valkyrie_cmap_regs; + +static volatile struct { + unsigned char addr; + unsigned char lut; +} *v8_brazil_cmap_regs; + +static volatile 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 */ +} *rbv_cmap_regs; + +static volatile struct { + unsigned long reset; + unsigned long pad1[3]; + unsigned char pad2[3]; + unsigned char lut; +} *dafb_cmap_regs; + +static volatile 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 */ +} *civic_cmap_regs; + +static volatile struct { + char pad1[0x40]; + unsigned char clut_waddr; /* 0x40 */ + char pad2; + unsigned char clut_data; /* 0x42 */ + char pad3[0x3]; + unsigned char clut_raddr; /* 0x46 */ +} *csc_cmap_regs; + +/* We will leave these the way they are for the time being */ +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 */ + +/* mode */ +static int video_slot = 0; + +static struct fb_var_screeninfo macfb_defined = { + .bits_per_pixel = 8, + .activate = FB_ACTIVATE_NOW, + .width = -1, + .height = -1, + .right_margin = 32, + .upper_margin = 16, + .lower_margin = 4, + .vsync_len = 4, + .vmode = FB_VMODE_NONINTERLACED, +}; + +static struct fb_fix_screeninfo macfb_fix = { + .id = "Macintosh ", + .type = FB_TYPE_PACKED_PIXELS, + .accel = FB_ACCEL_NONE, +}; + +static struct fb_info fb_info; +static u32 pseudo_palette[17]; +static int inverse = 0; +static int vidtest = 0; + +static int valkyrie_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) +{ + unsigned long flags; + + red >>= 8; + green >>= 8; + blue >>= 8; + + local_irq_save(flags); + + /* tell clut which address to fill */ + nubus_writeb(regno, &valkyrie_cmap_regs->addr); + nop(); + + /* send one color channel at a time */ + nubus_writeb(red, &valkyrie_cmap_regs->lut); + nop(); + nubus_writeb(green, &valkyrie_cmap_regs->lut); + nop(); + nubus_writeb(blue, &valkyrie_cmap_regs->lut); + + local_irq_restore(flags); + return 0; +} + +/* 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) +{ + /* FIXME: really, really need to use ioremap() here, + phys_to_virt() doesn't work anymore */ + static int lastreg = -1; + unsigned long flags; + + red >>= 8; + green >>= 8; + blue >>= 8; + + 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 char _red =red>>8; + unsigned char _green=green>>8; + unsigned char _blue =blue>>8; + unsigned char _regno; + unsigned long flags; + + if (bpp > 8) return 1; /* failsafe */ + + 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; +} + +static int rbv_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) +{ + /* use MSBs */ + unsigned char _red =red>>8; + unsigned char _green=green>>8; + unsigned char _blue =blue>>8; + unsigned char _regno; + unsigned long flags; + + if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ + + 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 = 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); /* done. */ + return 0; +} + +/* Macintosh Display Card (8x24) */ +static int mdc_setpalette(unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) +{ + volatile struct mdc_cmap_regs *cmap_regs = + nubus_slot_addr(video_slot); + /* use MSBs */ + unsigned char _red =red>>8; + unsigned char _green=green>>8; + unsigned char _blue =blue>>8; + unsigned char _regno=regno; + 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) +{ + volatile struct toby_cmap_regs *cmap_regs = + nubus_slot_addr(video_slot); + unsigned int bpp = info->var.bits_per_pixel; + /* use MSBs */ + unsigned char _red =~(red>>8); + unsigned char _green=~(green>>8); + unsigned char _blue =~(blue>>8); + unsigned char _regno = (regno << (8 - bpp)) | (0xFF >> bpp); + 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; +} + +/* Jet frame buffer */ +static int jet_setpalette(unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) +{ + volatile struct jet_cmap_regs *cmap_regs = + nubus_slot_addr(video_slot); + /* use MSBs */ + unsigned char _red = (red>>8); + unsigned char _green = (green>>8); + unsigned char _blue = (blue>>8); + 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. + * + * FIXME: this doesn't seem to work anymore. + */ +static int civic_setpalette (unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) +{ + static int lastreg = -1; + unsigned long flags; + int clut_status; + + if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ + + red >>= 8; + green >>= 8; + blue >>= 8; + + local_irq_save(flags); + + /* + * Set the register address + */ + nubus_writeb(regno, &civic_cmap_regs->addr); nop(); + + /* + * Wait for VBL interrupt here; + * They're usually not enabled from Penguin, so we won't check + */ +#if 0 + { +#define CIVIC_VBL_OFFSET 0x120 + volatile unsigned long *vbl = nubus_readl(civic_cmap_regs->vbl_addr + CIVIC_VBL_OFFSET); + /* do interrupt setup stuff here? */ + *vbl = 0L; nop(); /* clear */ + *vbl = 1L; nop(); /* set */ + while (*vbl != 0L) /* wait for next vbl */ + { + usleep(10); /* needed? */ + } + /* do interrupt shutdown stuff here? */ + } +#endif + + /* + * 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); nop(); + } + 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); nop(); + } + + local_irq_restore(flags); + lastreg = regno; + 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) +{ + mdelay(1); + csc_cmap_regs->clut_waddr = regno; + csc_cmap_regs->clut_data = red; + csc_cmap_regs->clut_data = green; + csc_cmap_regs->clut_data = blue; + 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 + * != 0 for invalid regno. + */ + + if (regno >= fb_info->cmap.len) + return 1; + + 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, green, blue, fb_info); + else + return 1; + break; + 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) ) | + ((green & 0xfc00) >> 5) | + ((blue & 0xf800) >> 11); + } + break; + /* I'm pretty sure that one or the other of these + doesn't exist on 68k Macs */ + case 24: + 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; + 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, + .fb_cursor = soft_cursor, +}; + +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")) + inverse=1; + /* This means "turn on experimental CLUT code" */ + else if (!strcmp(this_opt, "vidtest")) + vidtest=1; + } +} + +void __init macfb_init(void) +{ + int video_cmap_len, video_is_nubus = 0; + struct nubus_dev* ndev = NULL; + char *option = NULL; + + if (fb_get_options("macfb", &option)) + return -ENODEV; + macfb_setup(option); + + if (!MACH_IS_MAC) + return; + + /* There can only be one internal video controller anyway so + we're not too worried about this */ + 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); + + printk("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); + printk("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); + + printk("macfb: scrolling: redraw\n"); + macfb_defined.yres_virtual = macfb_defined.yres; + + /* 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: + /* XXX: I think this will catch any program that tries + to do FBIO_PUTCMAP when the visual is monochrome */ + 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 = 0; + 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; + printk("macfb: directcolor: " + "size=1:5:5:5, shift=15:10:5:0\n"); + 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: + /* XXX: have to test these... can any 68k Macs + actually do this on internal video? */ + 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; + printk("macfb: truecolor: " + "size=0:8:8:8, shift=0:16:8:0\n"); + video_cmap_len = 16; + macfb_fix.visual = FB_VISUAL_TRUECOLOR; + default: + video_cmap_len = 0; + macfb_fix.visual = FB_VISUAL_MONO01; + printk("macfb: unknown or unsupported bit depth: %d\n", macfb_defined.bits_per_pixel); + break; + } + + /* Hardware dependent stuff */ + /* 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 :-) */ + + while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, NUBUS_TYPE_VIDEO, ndev)) + != NULL) + { + if (!(mac_bi_data.videoaddr >= ndev->board->slot_addr + && (mac_bi_data.videoaddr < + (unsigned long)nubus_slot_addr(ndev->board->slot+1)))) + continue; + video_is_nubus = 1; + /* We should probably just use the slot address... */ + video_slot = ndev->board->slot; + + switch(ndev->dr_hw) { + case NUBUS_DRHW_APPLE_MDC: + strcat( macfb_fix.id, "Display Card" ); + macfb_setpalette = mdc_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + break; + case NUBUS_DRHW_APPLE_TFB: + strcat( macfb_fix.id, "Toby" ); + macfb_setpalette = toby_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + break; + case NUBUS_DRHW_APPLE_JET: + strcat( macfb_fix.id, "Jet"); + macfb_setpalette = jet_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + break; + default: + strcat( macfb_fix.id, "Generic NuBus" ); + break; + } + } + + /* If it's not a NuBus card, it must be internal video */ + /* FIXME: this function is getting way too big. (this driver + is too...) */ + if (!video_is_nubus) + switch( mac_bi_data.id ) + { + /* These don't have onboard video. Eventually, we may + be able to write separate framebuffer drivers for + them (tobyfb.c, hiresfb.c, etc, etc) */ + case MAC_MODEL_II: + case MAC_MODEL_IIX: + case MAC_MODEL_IICX: + case MAC_MODEL_IIFX: + strcat( macfb_fix.id, "Generic NuBus" ); + break; + + /* Valkyrie Quadras */ + case MAC_MODEL_Q630: + /* I'm not sure about this one */ + case MAC_MODEL_P588: + strcat( macfb_fix.id, "Valkyrie built-in" ); + macfb_setpalette = valkyrie_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + valkyrie_cmap_regs = ioremap(DAC_BASE, 0x1000); + break; + + /* 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: + strcat( macfb_fix.id, "DAFB built-in" ); + macfb_setpalette = dafb_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); + break; + + /* LC II uses the V8 framebuffer */ + case MAC_MODEL_LCII: + strcat( macfb_fix.id, "V8 built-in" ); + macfb_setpalette = v8_brazil_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + 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: + strcat( macfb_fix.id, "Brazil built-in" ); + macfb_setpalette = v8_brazil_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + 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: + macfb_setpalette = v8_brazil_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + strcat( macfb_fix.id, "Sonora built-in" ); + 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: + macfb_setpalette = rbv_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + strcat( macfb_fix.id, "RBV built-in" ); + rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); + break; + + /* AVs use the Civic framebuffer */ + case MAC_MODEL_Q840: + case MAC_MODEL_C660: + macfb_setpalette = civic_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + strcat( macfb_fix.id, "Civic built-in" ); + civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000); + break; + + + /* Write a setpalette function for your machine, then + you can add something similar here. These are + grouped by classes of video chipsets. Some of this + information is from the VideoToolbox "Bugs" web + page at + http://rajsky.psych.nyu.edu/Tips/VideoBugs.html */ + + /* Assorted weirdos */ + /* We think this may be like the LC II */ + case MAC_MODEL_LC: + if (vidtest) { + macfb_setpalette = v8_brazil_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + v8_brazil_cmap_regs = + ioremap(DAC_BASE, 0x1000); + } + strcat( macfb_fix.id, "LC built-in" ); + break; + /* We think this may be like the LC II */ + case MAC_MODEL_CCL: + if (vidtest) { + macfb_setpalette = v8_brazil_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + v8_brazil_cmap_regs = + ioremap(DAC_BASE, 0x1000); + } + strcat( macfb_fix.id, "Color Classic built-in" ); + break; + + /* And we *do* mean "weirdos" */ + case MAC_MODEL_TV: + strcat( macfb_fix.id, "Mac TV built-in" ); + break; + + /* These don't have colour, so no need to worry */ + case MAC_MODEL_SE30: + case MAC_MODEL_CLII: + strcat( macfb_fix.id, "Monochrome built-in" ); + 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. */ + + case MAC_MODEL_PB140: + case MAC_MODEL_PB145: + case MAC_MODEL_PB170: + strcat( macfb_fix.id, "DDC built-in" ); + 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: + strcat( macfb_fix.id, "GSC built-in" ); + break; + + /* Internal is TIM, External is ViSC */ + case MAC_MODEL_PB165C: + case MAC_MODEL_PB180C: + strcat( macfb_fix.id, "TIM built-in" ); + 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: + macfb_setpalette = csc_setpalette; + macfb_defined.activate = FB_ACTIVATE_NOW; + strcat( macfb_fix.id, "CSC built-in" ); + csc_cmap_regs = ioremap(CSC_BASE, 0x1000); + break; + + default: + strcat( macfb_fix.id, "Unknown/Unsupported built-in" ); + 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; + + fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); + + if (register_framebuffer(&fb_info) < 0) + return; + + printk("fb%d: %s frame buffer device\n", + fb_info.node, fb_info.fix.id); +} + +module_init(macfb_init); +MODULE_LICENSE("GPL"); |