diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/macfb.c | 577 |
1 files changed, 295 insertions, 282 deletions
diff --git a/drivers/video/macfb.c b/drivers/video/macfb.c index a923225..8b246ee 100644 --- a/drivers/video/macfb.c +++ b/drivers/video/macfb.c @@ -1,29 +1,33 @@ -/* 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. */ +/* + * 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 + * + * 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/errno.h> #include <linux/string.h> #include <linux/mm.h> -#include <linux/slab.h> #include <linux/delay.h> #include <linux/nubus.h> #include <linux/init.h> @@ -31,9 +35,6 @@ #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> @@ -44,7 +45,7 @@ #define DAFB_BASE 0xf9800200 /* Address for the built-in Civic framebuffer in Quadra AVs */ -#define CIVIC_BASE 0x50f30800 /* Only tested on 660AV! */ +#define CIVIC_BASE 0x50f30800 /* GSC (Gray Scale Controller) base address */ #define GSC_BASE 0x50F20000 @@ -52,27 +53,9 @@ /* 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 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 int (*macfb_setpalette)(unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info); static struct { unsigned char addr; @@ -106,15 +89,15 @@ static struct { } __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 */ + 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; -/* We will leave these the way they are for the time being */ +/* The registers in these structs are in NuBus slot space */ struct mdc_cmap_regs { char pad1[0x200200]; unsigned char addr; @@ -135,13 +118,12 @@ struct jet_cmap_regs { unsigned char lut; }; -#define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */ +#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, + .bits_per_pixel = 8, .activate = FB_ACTIVATE_NOW, .width = -1, .height = -1, @@ -159,19 +141,19 @@ static struct fb_fix_screeninfo macfb_fix = { static struct fb_info fb_info; static u32 pseudo_palette[16]; -static int inverse = 0; -static int vidtest = 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) +static int inverse; +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) { - /* FIXME: really, really need to use ioremap() here, - phys_to_virt() doesn't work anymore */ static int lastreg = -1; unsigned long flags; @@ -180,42 +162,47 @@ static int dafb_setpalette (unsigned int regno, unsigned int red, 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) { + + /* + * 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); + nubus_writeb(info->cmap.red[i] >> 8, + &dafb_cmap_regs->lut); nop(); - nubus_writeb(info->cmap.green[i] >> 8, &dafb_cmap_regs->lut); + nubus_writeb(info->cmap.green[i] >> 8, + &dafb_cmap_regs->lut); nop(); - nubus_writeb(info->cmap.blue[i] >> 8, &dafb_cmap_regs->lut); + 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) +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; @@ -224,33 +211,36 @@ static int v8_brazil_setpalette (unsigned int regno, unsigned int red, unsigned char _regno; unsigned long flags; - if (bpp > 8) return 1; /* failsafe */ + 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(); + * 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(_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); + 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) +/* RAM-Based Video */ +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; @@ -259,10 +249,11 @@ static int rbv_setpalette (unsigned int regno, unsigned int red, unsigned char _regno; unsigned long flags; - if (info->var.bits_per_pixel > 8) return 1; /* failsafe */ + 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. @@ -270,21 +261,25 @@ static int rbv_setpalette (unsigned int regno, unsigned int red, _regno = regno + (256-(1 << info->var.bits_per_pixel)); /* reset clut? (VideoToolbox sez "not necessary") */ - nubus_writeb(0xFF, &rbv_cmap_regs->cntl); nop(); - + nubus_writeb(0xFF, &rbv_cmap_regs->cntl); + nop(); + /* tell clut which address to use. */ - nubus_writeb(_regno, &rbv_cmap_regs->addr); nop(); - + 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. */ + 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 (8x24) */ +/* 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) @@ -299,11 +294,14 @@ static int mdc_setpalette(unsigned int regno, unsigned int red, 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(_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); @@ -313,7 +311,7 @@ static int mdc_setpalette(unsigned int regno, unsigned int red, /* Toby frame buffer */ static int toby_setpalette(unsigned int regno, unsigned int red, unsigned int green, unsigned int blue, - struct fb_info *info) + struct fb_info *info) { volatile struct toby_cmap_regs *cmap_regs = nubus_slot_addr(video_slot); @@ -326,10 +324,13 @@ static int toby_setpalette(unsigned int regno, unsigned int red, 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(_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); @@ -350,10 +351,13 @@ static int jet_setpalette(unsigned int regno, unsigned int red, 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(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); @@ -363,53 +367,31 @@ static int jet_setpalette(unsigned int regno, unsigned int red, /* * 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 + * 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 + * 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 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 */ + 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 + /* Set the register address */ + nubus_writeb(regno, &civic_cmap_regs->addr); + nop(); /* * Grab a status word and do some checking; @@ -422,39 +404,52 @@ static int civic_setpalette (unsigned int regno, unsigned int red, #if 0 if ((clut_status & 0x000D) != 0) { - nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); - nubus_writeb(0x00, &civic_cmap_regs->lut); nop(); + 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(); + 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(); + 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(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(); + 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); - lastreg = regno; return 0; } @@ -463,10 +458,9 @@ static int civic_setpalette (unsigned int regno, unsigned int red, * (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) +static int csc_setpalette(unsigned int regno, unsigned int red, + unsigned int green, unsigned int blue, + struct fb_info *info) { mdelay(1); nubus_writeb(regno, &csc_cmap_regs->clut_waddr); @@ -481,10 +475,10 @@ static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, 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. + * 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) @@ -518,28 +512,22 @@ static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, } else { /* 0:5:6:5 */ ((u32*) (fb_info->pseudo_palette))[regno] = - ((red & 0xf800) ) | + ((red & 0xf800) >> 0) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11); } break; - /* I'm pretty sure that one or the other of these - doesn't exist on 68k Macs */ + /* + * 24-bit colour almost doesn't exist on 68k Macs -- + * http://support.apple.com/kb/TA28634 (Old Article: 10992) + */ 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) | + (red << fb_info->var.red.offset) | (green << fb_info->var.green.offset) | (blue << fb_info->var.blue.offset); break; @@ -560,18 +548,19 @@ static struct fb_ops macfb_ops = { 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")) - inverse=1; - /* This means "turn on experimental CLUT code" */ - else if (!strcmp(this_opt, "vidtest")) - vidtest=1; + if (!*this_opt) + continue; + + if (!strcmp(this_opt, "inverse")) + inverse = 1; + else + if (!strcmp(this_opt, "vidtest")) + vidtest = 1; /* enable experimental CLUT code */ } } @@ -607,48 +596,52 @@ static int __init macfb_init(void) mac_bi_data.id == MAC_MODEL_P588) return -ENODEV; /* See valkyriefb.c */ - /* 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; + 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 */ + 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); + 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); - + macfb_defined.xres, macfb_defined.yres, + macfb_defined.bits_per_pixel, macfb_fix.line_length); + /* - * Fill in the available video resolution + * 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); + 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.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 */ + /* + * 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; @@ -676,14 +669,14 @@ static int __init macfb_init(void) 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 */ + /* + * 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; @@ -697,18 +690,19 @@ static int __init macfb_init(void) 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); + 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. + /* + * 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 :-) */ - /* 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) @@ -736,7 +730,7 @@ static int __init macfb_init(void) strcpy(macfb_fix.id, "Jet"); macfb_setpalette = jet_setpalette; macfb_defined.activate = FB_ACTIVATE_NOW; - break; + break; default: strcpy(macfb_fix.id, "Generic NuBus"); break; @@ -744,20 +738,19 @@ static int __init macfb_init(void) } /* 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 ) - { - /* DAFB Quadras */ - /* Note: these first four have the v7 DAFB, which is - known to be rather unlike the ones used in the - other models */ + 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: @@ -772,17 +765,21 @@ static int __init macfb_init(void) dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); break; - /* LC II uses the V8 framebuffer */ + /* + * LC II uses the V8 framebuffer + */ case MAC_MODEL_LCII: strcpy(macfb_fix.id, "V8"); 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) */ + + /* + * 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: @@ -791,12 +788,14 @@ static int __init macfb_init(void) 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. */ + + /* + * 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: @@ -807,9 +806,11 @@ static int __init macfb_init(void) 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) */ + /* + * 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; @@ -818,7 +819,9 @@ static int __init macfb_init(void) rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); break; - /* AVs use the Civic framebuffer */ + /* + * AVs use the Civic framebuffer + */ case MAC_MODEL_Q840: case MAC_MODEL_C660: macfb_setpalette = civic_setpalette; @@ -828,15 +831,10 @@ static int __init macfb_init(void) 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 */ + /* + * Assorted weirdos + * We think this may be like the LC II + */ case MAC_MODEL_LC: if (vidtest) { macfb_setpalette = v8_brazil_setpalette; @@ -846,7 +844,10 @@ static int __init macfb_init(void) } strcpy(macfb_fix.id, "LC"); break; - /* We think this may be like the LC II */ + + /* + * We think this may be like the LC II + */ case MAC_MODEL_CCL: if (vidtest) { macfb_setpalette = v8_brazil_setpalette; @@ -857,23 +858,29 @@ static int __init macfb_init(void) strcpy(macfb_fix.id, "Color Classic"); break; - /* And we *do* mean "weirdos" */ + /* + * 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 */ + /* + * 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. */ + /* + * 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: @@ -881,7 +888,9 @@ static int __init macfb_init(void) strcpy(macfb_fix.id, "DDC"); break; - /* Internal is GSC, External (if present) is ViSC */ + /* + * Internal is GSC, External (if present) is ViSC + */ case MAC_MODEL_PB150: /* no external video */ case MAC_MODEL_PB160: case MAC_MODEL_PB165: @@ -891,13 +900,17 @@ static int __init macfb_init(void) strcpy(macfb_fix.id, "GSC"); break; - /* Internal is TIM, External is ViSC */ + /* + * 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. */ + /* + * Internal is CSC, External is Keystone+Ariel. + */ case MAC_MODEL_PB190: /* external video is optional */ case MAC_MODEL_PB520: case MAC_MODEL_PB250: @@ -909,7 +922,7 @@ static int __init macfb_init(void) strcpy(macfb_fix.id, "CSC"); csc_cmap_regs = ioremap(CSC_BASE, 0x1000); break; - + default: strcpy(macfb_fix.id, "Unknown"); break; @@ -924,7 +937,7 @@ static int __init macfb_init(void) 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; |
