video: move fbdev to drivers/video/fbdev

The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.

Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.

No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 714 insertions, 0 deletions

diff --git a/drivers/video/fbdev/platinumfb.c b/drivers/video/fbdev/platinumfb.c
new file mode 100644
index 000000000000..4c9299576827
--- /dev/null
+++ b/drivers/video/fbdev/platinumfb.c
@@ -0,0 +1,714 @@
+/*
+ *  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 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 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;
+
+        fb_info(info, "Apple Platinum frame buffer device\n");
+
+        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 specified 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 platinumfb_probe(struct platform_device* odev)
+{
+        struct device_node      *dp = odev->dev.of_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,
+                                resource_size(&pinfo->rsrc_fb),
+                                "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);
+                framebuffer_release(info);
+        }
+
+        return rc;
+}
+
+static int platinumfb_remove(struct platform_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,
+                           resource_size(&pinfo->rsrc_fb));
+
+        release_mem_region(pinfo->cmap_regs_phys, 0x1000);
+
+        framebuffer_release(info);
+
+        return 0;
+}
+
+static struct of_device_id platinumfb_match[] = 
+{
+        {
+        .name           = "platinum",
+        },
+        {},
+};
+
+static struct platform_driver platinum_driver = 
+{
+        .driver = {
+                .name = "platinumfb",
+                .owner = THIS_MODULE,
+                .of_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
+        platform_driver_register(&platinum_driver);
+
+        return 0;
+}
+
+static void __exit platinumfb_exit(void)
+{
+        platform_driver_unregister(&platinum_driver);
+}
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("framebuffer driver for Apple Platinum video");
+module_init(platinumfb_init);
+
+#ifdef MODULE
+module_exit(platinumfb_exit);
+#endif