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remarkable-linux/drivers/video/platinumfb.c
Tejun Heo 5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00

714 lines
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/*
* platinumfb.c -- frame buffer device for the PowerMac 'platinum' display
*
* Copyright (C) 1998 Franz Sirl
*
* Frame buffer structure from:
* drivers/video/controlfb.c -- frame buffer device for
* Apple 'control' display chip.
* Copyright (C) 1998 Dan Jacobowitz
*
* Hardware information from:
* platinum.c: Console support for PowerMac "platinum" display adaptor.
* Copyright (C) 1996 Paul Mackerras and Mark Abene
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*/
#undef DEBUG
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/nvram.h>
#include <linux/of_device.h>
#include <linux/of_platform.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/pgtable.h>
#include "macmodes.h"
#include "platinumfb.h"
static int default_vmode = VMODE_NVRAM;
static int default_cmode = CMODE_NVRAM;
struct fb_info_platinum {
struct fb_info *info;
int vmode, cmode;
int xres, yres;
int vxres, vyres;
int xoffset, yoffset;
struct {
__u8 red, green, blue;
} palette[256];
u32 pseudo_palette[16];
volatile struct cmap_regs __iomem *cmap_regs;
unsigned long cmap_regs_phys;
volatile struct platinum_regs __iomem *platinum_regs;
unsigned long platinum_regs_phys;
__u8 __iomem *frame_buffer;
volatile __u8 __iomem *base_frame_buffer;
unsigned long frame_buffer_phys;
unsigned long total_vram;
int clktype;
int dactype;
struct resource rsrc_fb, rsrc_reg;
};
/*
* Frame buffer device API
*/
static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int platinumfb_blank(int blank_mode, struct fb_info *info);
static int platinumfb_set_par (struct fb_info *info);
static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info);
/*
* internal functions
*/
static inline int platinum_vram_reqd(int video_mode, int color_mode);
static int read_platinum_sense(struct fb_info_platinum *pinfo);
static void set_platinum_clock(struct fb_info_platinum *pinfo);
static void platinum_set_hardware(struct fb_info_platinum *pinfo);
static int platinum_var_to_par(struct fb_var_screeninfo *var,
struct fb_info_platinum *pinfo,
int check_only);
/*
* Interface used by the world
*/
static struct fb_ops platinumfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = platinumfb_check_var,
.fb_set_par = platinumfb_set_par,
.fb_setcolreg = platinumfb_setcolreg,
.fb_blank = platinumfb_blank,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
/*
* Checks a var structure
*/
static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info)
{
return platinum_var_to_par(var, info->par, 1);
}
/*
* Applies current var to display
*/
static int platinumfb_set_par (struct fb_info *info)
{
struct fb_info_platinum *pinfo = info->par;
struct platinum_regvals *init;
int err, offset = 0x20;
if((err = platinum_var_to_par(&info->var, pinfo, 0))) {
printk (KERN_ERR "platinumfb_set_par: error calling"
" platinum_var_to_par: %d.\n", err);
return err;
}
platinum_set_hardware(pinfo);
init = platinum_reg_init[pinfo->vmode-1];
if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8))
offset = 0x10;
info->screen_base = pinfo->frame_buffer + init->fb_offset + offset;
mutex_lock(&info->mm_lock);
info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset;
mutex_unlock(&info->mm_lock);
info->fix.visual = (pinfo->cmode == CMODE_8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode)
+ offset;
printk("line_length: %x\n", info->fix.line_length);
return 0;
}
static int platinumfb_blank(int blank, struct fb_info *fb)
{
/*
* Blank the screen if blank_mode != 0, else unblank. If blank == NULL
* then the caller blanks by setting the CLUT (Color Look Up Table) to all
* black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
* to e.g. a video mode which doesn't support it. Implements VESA suspend
* and powerdown modes on hardware that supports disabling hsync/vsync:
* blank_mode == 2: suspend vsync
* blank_mode == 3: suspend hsync
* blank_mode == 4: powerdown
*/
/* [danj] I think there's something fishy about those constants... */
/*
struct fb_info_platinum *info = (struct fb_info_platinum *) fb;
int ctrl;
ctrl = ld_le32(&info->platinum_regs->ctrl.r) | 0x33;
if (blank)
--blank_mode;
if (blank & VESA_VSYNC_SUSPEND)
ctrl &= ~3;
if (blank & VESA_HSYNC_SUSPEND)
ctrl &= ~0x30;
out_le32(&info->platinum_regs->ctrl.r, ctrl);
*/
/* TODO: Figure out how the heck to powerdown this thing! */
return 0;
}
static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
struct fb_info_platinum *pinfo = info->par;
volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs;
if (regno > 255)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
pinfo->palette[regno].red = red;
pinfo->palette[regno].green = green;
pinfo->palette[regno].blue = blue;
out_8(&cmap_regs->addr, regno); /* tell clut what addr to fill */
out_8(&cmap_regs->lut, red); /* send one color channel at */
out_8(&cmap_regs->lut, green); /* a time... */
out_8(&cmap_regs->lut, blue);
if (regno < 16) {
int i;
u32 *pal = info->pseudo_palette;
switch (pinfo->cmode) {
case CMODE_16:
pal[regno] = (regno << 10) | (regno << 5) | regno;
break;
case CMODE_32:
i = (regno << 8) | regno;
pal[regno] = (i << 16) | i;
break;
}
}
return 0;
}
static inline int platinum_vram_reqd(int video_mode, int color_mode)
{
int baseval = vmode_attrs[video_mode-1].hres * (1<<color_mode);
if ((video_mode == VMODE_832_624_75) && (color_mode > CMODE_8))
baseval += 0x10;
else
baseval += 0x20;
return vmode_attrs[video_mode-1].vres * baseval + 0x1000;
}
#define STORE_D2(a, d) { \
out_8(&cmap_regs->addr, (a+32)); \
out_8(&cmap_regs->d2, (d)); \
}
static void set_platinum_clock(struct fb_info_platinum *pinfo)
{
volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs;
struct platinum_regvals *init;
init = platinum_reg_init[pinfo->vmode-1];
STORE_D2(6, 0xc6);
out_8(&cmap_regs->addr,3+32);
if (in_8(&cmap_regs->d2) == 2) {
STORE_D2(7, init->clock_params[pinfo->clktype][0]);
STORE_D2(8, init->clock_params[pinfo->clktype][1]);
STORE_D2(3, 3);
} else {
STORE_D2(4, init->clock_params[pinfo->clktype][0]);
STORE_D2(5, init->clock_params[pinfo->clktype][1]);
STORE_D2(3, 2);
}
__delay(5000);
STORE_D2(9, 0xa6);
}
/* Now how about actually saying, Make it so! */
/* Some things in here probably don't need to be done each time. */
static void platinum_set_hardware(struct fb_info_platinum *pinfo)
{
volatile struct platinum_regs __iomem *platinum_regs = pinfo->platinum_regs;
volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs;
struct platinum_regvals *init;
int i;
int vmode, cmode;
vmode = pinfo->vmode;
cmode = pinfo->cmode;
init = platinum_reg_init[vmode - 1];
/* Initialize display timing registers */
out_be32(&platinum_regs->reg[24].r, 7); /* turn display off */
for (i = 0; i < 26; ++i)
out_be32(&platinum_regs->reg[i+32].r, init->regs[i]);
out_be32(&platinum_regs->reg[26+32].r, (pinfo->total_vram == 0x100000 ?
init->offset[cmode] + 4 - cmode :
init->offset[cmode]));
out_be32(&platinum_regs->reg[16].r, (unsigned) pinfo->frame_buffer_phys+init->fb_offset+0x10);
out_be32(&platinum_regs->reg[18].r, init->pitch[cmode]);
out_be32(&platinum_regs->reg[19].r, (pinfo->total_vram == 0x100000 ?
init->mode[cmode+1] :
init->mode[cmode]));
out_be32(&platinum_regs->reg[20].r, (pinfo->total_vram == 0x100000 ? 0x11 : 0x1011));
out_be32(&platinum_regs->reg[21].r, 0x100);
out_be32(&platinum_regs->reg[22].r, 1);
out_be32(&platinum_regs->reg[23].r, 1);
out_be32(&platinum_regs->reg[26].r, 0xc00);
out_be32(&platinum_regs->reg[27].r, 0x235);
/* out_be32(&platinum_regs->reg[27].r, 0x2aa); */
STORE_D2(0, (pinfo->total_vram == 0x100000 ?
init->dacula_ctrl[cmode] & 0xf :
init->dacula_ctrl[cmode]));
STORE_D2(1, 4);
STORE_D2(2, 0);
set_platinum_clock(pinfo);
out_be32(&platinum_regs->reg[24].r, 0); /* turn display on */
}
/*
* Set misc info vars for this driver
*/
static void __devinit platinum_init_info(struct fb_info *info, struct fb_info_platinum *pinfo)
{
/* Fill fb_info */
info->fbops = &platinumfb_ops;
info->pseudo_palette = pinfo->pseudo_palette;
info->flags = FBINFO_DEFAULT;
info->screen_base = pinfo->frame_buffer + 0x20;
fb_alloc_cmap(&info->cmap, 256, 0);
/* Fill fix common fields */
strcpy(info->fix.id, "platinum");
info->fix.mmio_start = pinfo->platinum_regs_phys;
info->fix.mmio_len = 0x1000;
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.smem_start = pinfo->frame_buffer_phys + 0x20; /* will be updated later */
info->fix.smem_len = pinfo->total_vram - 0x20;
info->fix.ywrapstep = 0;
info->fix.xpanstep = 0;
info->fix.ypanstep = 0;
info->fix.type_aux = 0;
info->fix.accel = FB_ACCEL_NONE;
}
static int __devinit platinum_init_fb(struct fb_info *info)
{
struct fb_info_platinum *pinfo = info->par;
struct fb_var_screeninfo var;
int sense, rc;
sense = read_platinum_sense(pinfo);
printk(KERN_INFO "platinumfb: Monitor sense value = 0x%x, ", sense);
if (default_vmode == VMODE_NVRAM) {
#ifdef CONFIG_NVRAM
default_vmode = nvram_read_byte(NV_VMODE);
if (default_vmode <= 0 || default_vmode > VMODE_MAX ||
!platinum_reg_init[default_vmode-1])
#endif
default_vmode = VMODE_CHOOSE;
}
if (default_vmode == VMODE_CHOOSE) {
default_vmode = mac_map_monitor_sense(sense);
}
if (default_vmode <= 0 || default_vmode > VMODE_MAX)
default_vmode = VMODE_640_480_60;
#ifdef CONFIG_NVRAM
if (default_cmode == CMODE_NVRAM)
default_cmode = nvram_read_byte(NV_CMODE);
#endif
if (default_cmode < CMODE_8 || default_cmode > CMODE_32)
default_cmode = CMODE_8;
/*
* Reduce the pixel size if we don't have enough VRAM.
*/
while(default_cmode > CMODE_8 &&
platinum_vram_reqd(default_vmode, default_cmode) > pinfo->total_vram)
default_cmode--;
printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode, default_cmode);
/* Setup default var */
if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) {
/* This shouldn't happen! */
printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode, default_cmode);
try_again:
default_vmode = VMODE_640_480_60;
default_cmode = CMODE_8;
if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) {
printk(KERN_ERR "platinumfb: mac_vmode_to_var() failed\n");
return -ENXIO;
}
}
/* Initialize info structure */
platinum_init_info(info, pinfo);
/* Apply default var */
info->var = var;
var.activate = FB_ACTIVATE_NOW;
rc = fb_set_var(info, &var);
if (rc && (default_vmode != VMODE_640_480_60 || default_cmode != CMODE_8))
goto try_again;
/* Register with fbdev layer */
rc = register_framebuffer(info);
if (rc < 0)
return rc;
printk(KERN_INFO "fb%d: Apple Platinum frame buffer device\n", info->node);
return 0;
}
/*
* Get the monitor sense value.
* Note that this can be called before calibrate_delay,
* so we can't use udelay.
*/
static int read_platinum_sense(struct fb_info_platinum *info)
{
volatile struct platinum_regs __iomem *platinum_regs = info->platinum_regs;
int sense;
out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */
__delay(2000);
sense = (~in_be32(&platinum_regs->reg[23].r) & 7) << 8;
/* drive each sense line low in turn and collect the other 2 */
out_be32(&platinum_regs->reg[23].r, 3); /* drive A low */
__delay(2000);
sense |= (~in_be32(&platinum_regs->reg[23].r) & 3) << 4;
out_be32(&platinum_regs->reg[23].r, 5); /* drive B low */
__delay(2000);
sense |= (~in_be32(&platinum_regs->reg[23].r) & 4) << 1;
sense |= (~in_be32(&platinum_regs->reg[23].r) & 1) << 2;
out_be32(&platinum_regs->reg[23].r, 6); /* drive C low */
__delay(2000);
sense |= (~in_be32(&platinum_regs->reg[23].r) & 6) >> 1;
out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */
return sense;
}
/*
* This routine takes a user-supplied var, and picks the best vmode/cmode from it.
* It also updates the var structure to the actual mode data obtained
*/
static int platinum_var_to_par(struct fb_var_screeninfo *var,
struct fb_info_platinum *pinfo,
int check_only)
{
int vmode, cmode;
if (mac_var_to_vmode(var, &vmode, &cmode) != 0) {
printk(KERN_ERR "platinum_var_to_par: mac_var_to_vmode unsuccessful.\n");
printk(KERN_ERR "platinum_var_to_par: var->xres = %d\n", var->xres);
printk(KERN_ERR "platinum_var_to_par: var->yres = %d\n", var->yres);
printk(KERN_ERR "platinum_var_to_par: var->xres_virtual = %d\n", var->xres_virtual);
printk(KERN_ERR "platinum_var_to_par: var->yres_virtual = %d\n", var->yres_virtual);
printk(KERN_ERR "platinum_var_to_par: var->bits_per_pixel = %d\n", var->bits_per_pixel);
printk(KERN_ERR "platinum_var_to_par: var->pixclock = %d\n", var->pixclock);
printk(KERN_ERR "platinum_var_to_par: var->vmode = %d\n", var->vmode);
return -EINVAL;
}
if (!platinum_reg_init[vmode-1]) {
printk(KERN_ERR "platinum_var_to_par, vmode %d not valid.\n", vmode);
return -EINVAL;
}
if (platinum_vram_reqd(vmode, cmode) > pinfo->total_vram) {
printk(KERN_ERR "platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode, cmode);
return -EINVAL;
}
if (mac_vmode_to_var(vmode, cmode, var))
return -EINVAL;
if (check_only)
return 0;
pinfo->vmode = vmode;
pinfo->cmode = cmode;
pinfo->xres = vmode_attrs[vmode-1].hres;
pinfo->yres = vmode_attrs[vmode-1].vres;
pinfo->xoffset = 0;
pinfo->yoffset = 0;
pinfo->vxres = pinfo->xres;
pinfo->vyres = pinfo->yres;
return 0;
}
/*
* Parse user speficied options (`video=platinumfb:')
*/
static int __init platinumfb_setup(char *options)
{
char *this_opt;
if (!options || !*options)
return 0;
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!strncmp(this_opt, "vmode:", 6)) {
int vmode = simple_strtoul(this_opt+6, NULL, 0);
if (vmode > 0 && vmode <= VMODE_MAX)
default_vmode = vmode;
} else if (!strncmp(this_opt, "cmode:", 6)) {
int depth = simple_strtoul(this_opt+6, NULL, 0);
switch (depth) {
case 0:
case 8:
default_cmode = CMODE_8;
break;
case 15:
case 16:
default_cmode = CMODE_16;
break;
case 24:
case 32:
default_cmode = CMODE_32;
break;
}
}
}
return 0;
}
#ifdef __powerpc__
#define invalidate_cache(addr) \
asm volatile("eieio; dcbf 0,%1" \
: "=m" (*(addr)) : "r" (addr) : "memory");
#else
#define invalidate_cache(addr)
#endif
static int __devinit platinumfb_probe(struct of_device* odev,
const struct of_device_id *match)
{
struct device_node *dp = odev->node;
struct fb_info *info;
struct fb_info_platinum *pinfo;
volatile __u8 *fbuffer;
int bank0, bank1, bank2, bank3, rc;
dev_info(&odev->dev, "Found Apple Platinum video hardware\n");
info = framebuffer_alloc(sizeof(*pinfo), &odev->dev);
if (info == NULL) {
dev_err(&odev->dev, "Failed to allocate fbdev !\n");
return -ENOMEM;
}
pinfo = info->par;
if (of_address_to_resource(dp, 0, &pinfo->rsrc_reg) ||
of_address_to_resource(dp, 1, &pinfo->rsrc_fb)) {
dev_err(&odev->dev, "Can't get resources\n");
framebuffer_release(info);
return -ENXIO;
}
dev_dbg(&odev->dev, " registers : 0x%llx...0x%llx\n",
(unsigned long long)pinfo->rsrc_reg.start,
(unsigned long long)pinfo->rsrc_reg.end);
dev_dbg(&odev->dev, " framebuffer: 0x%llx...0x%llx\n",
(unsigned long long)pinfo->rsrc_fb.start,
(unsigned long long)pinfo->rsrc_fb.end);
/* Do not try to request register space, they overlap with the
* northbridge and that can fail. Only request framebuffer
*/
if (!request_mem_region(pinfo->rsrc_fb.start,
pinfo->rsrc_fb.end - pinfo->rsrc_fb.start + 1,
"platinumfb framebuffer")) {
printk(KERN_ERR "platinumfb: Can't request framebuffer !\n");
framebuffer_release(info);
return -ENXIO;
}
/* frame buffer - map only 4MB */
pinfo->frame_buffer_phys = pinfo->rsrc_fb.start;
pinfo->frame_buffer = __ioremap(pinfo->rsrc_fb.start, 0x400000,
_PAGE_WRITETHRU);
pinfo->base_frame_buffer = pinfo->frame_buffer;
/* registers */
pinfo->platinum_regs_phys = pinfo->rsrc_reg.start;
pinfo->platinum_regs = ioremap(pinfo->rsrc_reg.start, 0x1000);
pinfo->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */
request_mem_region(pinfo->cmap_regs_phys, 0x1000, "platinumfb cmap");
pinfo->cmap_regs = ioremap(pinfo->cmap_regs_phys, 0x1000);
/* Grok total video ram */
out_be32(&pinfo->platinum_regs->reg[16].r, (unsigned)pinfo->frame_buffer_phys);
out_be32(&pinfo->platinum_regs->reg[20].r, 0x1011); /* select max vram */
out_be32(&pinfo->platinum_regs->reg[24].r, 0); /* switch in vram */
fbuffer = pinfo->base_frame_buffer;
fbuffer[0x100000] = 0x34;
fbuffer[0x100008] = 0x0;
invalidate_cache(&fbuffer[0x100000]);
fbuffer[0x200000] = 0x56;
fbuffer[0x200008] = 0x0;
invalidate_cache(&fbuffer[0x200000]);
fbuffer[0x300000] = 0x78;
fbuffer[0x300008] = 0x0;
invalidate_cache(&fbuffer[0x300000]);
bank0 = 1; /* builtin 1MB vram, always there */
bank1 = fbuffer[0x100000] == 0x34;
bank2 = fbuffer[0x200000] == 0x56;
bank3 = fbuffer[0x300000] == 0x78;
pinfo->total_vram = (bank0 + bank1 + bank2 + bank3) * 0x100000;
printk(KERN_INFO "platinumfb: Total VRAM = %dMB (%d%d%d%d)\n",
(unsigned int) (pinfo->total_vram / 1024 / 1024),
bank3, bank2, bank1, bank0);
/*
* Try to determine whether we have an old or a new DACula.
*/
out_8(&pinfo->cmap_regs->addr, 0x40);
pinfo->dactype = in_8(&pinfo->cmap_regs->d2);
switch (pinfo->dactype) {
case 0x3c:
pinfo->clktype = 1;
printk(KERN_INFO "platinumfb: DACula type 0x3c\n");
break;
case 0x84:
pinfo->clktype = 0;
printk(KERN_INFO "platinumfb: DACula type 0x84\n");
break;
default:
pinfo->clktype = 0;
printk(KERN_INFO "platinumfb: Unknown DACula type: %x\n", pinfo->dactype);
break;
}
dev_set_drvdata(&odev->dev, info);
rc = platinum_init_fb(info);
if (rc != 0) {
iounmap(pinfo->frame_buffer);
iounmap(pinfo->platinum_regs);
iounmap(pinfo->cmap_regs);
dev_set_drvdata(&odev->dev, NULL);
framebuffer_release(info);
}
return rc;
}
static int __devexit platinumfb_remove(struct of_device* odev)
{
struct fb_info *info = dev_get_drvdata(&odev->dev);
struct fb_info_platinum *pinfo = info->par;
unregister_framebuffer (info);
/* Unmap frame buffer and registers */
iounmap(pinfo->frame_buffer);
iounmap(pinfo->platinum_regs);
iounmap(pinfo->cmap_regs);
release_mem_region(pinfo->rsrc_fb.start,
pinfo->rsrc_fb.end -
pinfo->rsrc_fb.start + 1);
release_mem_region(pinfo->cmap_regs_phys, 0x1000);
framebuffer_release(info);
return 0;
}
static struct of_device_id platinumfb_match[] =
{
{
.name = "platinum",
},
{},
};
static struct of_platform_driver platinum_driver =
{
.name = "platinumfb",
.match_table = platinumfb_match,
.probe = platinumfb_probe,
.remove = platinumfb_remove,
};
static int __init platinumfb_init(void)
{
#ifndef MODULE
char *option = NULL;
if (fb_get_options("platinumfb", &option))
return -ENODEV;
platinumfb_setup(option);
#endif
of_register_platform_driver(&platinum_driver);
return 0;
}
static void __exit platinumfb_exit(void)
{
of_unregister_platform_driver(&platinum_driver);
}
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("framebuffer driver for Apple Platinum video");
module_init(platinumfb_init);
#ifdef MODULE
module_exit(platinumfb_exit);
#endif
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