macfb: cleanup
Cleanup whitespace and code style. Remove unused #includes and prototypes.
Remove obsolete, redundant or misleading comments. Remove dead code and
redundant initialisers.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
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 @@
} __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 @@
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_info fb_info;
static u32 pseudo_palette[16];
-static int inverse = 0;
-static int vidtest = 0;
+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)
+/*
+ * 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 @@
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 @@
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 @@
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 @@
_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 @@
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 @@
/* 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 @@
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 @@
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 @@
/*
* 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 @@
#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 @@
* (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 @@
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 @@
} 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 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 @@
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 @@
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 @@
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 @@
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 @@
}
/* 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 @@
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 @@
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 @@
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 @@
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 @@
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 @@
}
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 @@
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 @@
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 @@
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 @@
strcpy(macfb_fix.id, "CSC");
csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
break;
-
+
default:
strcpy(macfb_fix.id, "Unknown");
break;
@@ -924,7 +937,7 @@
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;