-/*
- * framebuffer driver for Intel Based Mac's
- *
- * (c) 2006 Edgar Hucek <gimli@dark-green.com>
- * Original imac driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
- *
- */
-
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fb.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/screen_info.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/dmi.h>
-#include <linux/efi.h>
-
-#include <asm/io.h>
-
-#include <video/vga.h>
-
-typedef enum _MAC_TYPE {
- M_I17,
- M_I20,
- M_MINI,
- M_MACBOOK,
- M_UNKNOWN
-} MAC_TYPE;
-
-/* --------------------------------------------------------------------- */
-
-static struct fb_var_screeninfo imacfb_defined __initdata = {
- .activate = FB_ACTIVATE_NOW,
- .height = -1,
- .width = -1,
- .right_margin = 32,
- .upper_margin = 16,
- .lower_margin = 4,
- .vsync_len = 4,
- .vmode = FB_VMODE_NONINTERLACED,
-};
-
-static struct fb_fix_screeninfo imacfb_fix __initdata = {
- .id = "IMAC VGA",
- .type = FB_TYPE_PACKED_PIXELS,
- .accel = FB_ACCEL_NONE,
- .visual = FB_VISUAL_TRUECOLOR,
-};
-
-static int inverse;
-static int model = M_UNKNOWN;
-static int manual_height;
-static int manual_width;
-
-static int set_system(const struct dmi_system_id *id)
-{
- printk(KERN_INFO "imacfb: %s detected - set system to %ld\n",
- id->ident, (long)id->driver_data);
-
- model = (long)id->driver_data;
-
- return 0;
-}
-
-static struct dmi_system_id __initdata dmi_system_table[] = {
- { set_system, "iMac4,1", {
- DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME,"iMac4,1") }, (void*)M_I17},
- { set_system, "MacBookPro1,1", {
- DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro1,1") }, (void*)M_I17},
- { set_system, "MacBook1,1", {
- DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME,"MacBook1,1")}, (void *)M_MACBOOK},
- { set_system, "Macmini1,1", {
- DMI_MATCH(DMI_BIOS_VENDOR,"Apple Computer, Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME,"Macmini1,1")}, (void *)M_MINI},
- {},
-};
-
-#define DEFAULT_FB_MEM 1024*1024*16
-
-/* --------------------------------------------------------------------- */
-
-static int imacfb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
-{
- /*
- * Set a single color register. The values supplied are
- * already rounded down to the hardware's capabilities
- * (according to the entries in the `var' structure). Return
- * != 0 for invalid regno.
- */
-
- if (regno >= info->cmap.len)
- return 1;
-
- if (regno < 16) {
- red >>= 8;
- green >>= 8;
- blue >>= 8;
- ((u32 *)(info->pseudo_palette))[regno] =
- (red << info->var.red.offset) |
- (green << info->var.green.offset) |
- (blue << info->var.blue.offset);
- }
- return 0;
-}
-
-static struct fb_ops imacfb_ops = {
- .owner = THIS_MODULE,
- .fb_setcolreg = imacfb_setcolreg,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
-};
-
-static int __init imacfb_setup(char *options)
-{
- char *this_opt;
-
- if (!options || !*options)
- return 0;
-
- while ((this_opt = strsep(&options, ",")) != NULL) {
- if (!*this_opt) continue;
-
- if (!strcmp(this_opt, "inverse"))
- inverse = 1;
- else if (!strcmp(this_opt, "i17"))
- model = M_I17;
- else if (!strcmp(this_opt, "i20"))
- model = M_I20;
- else if (!strcmp(this_opt, "mini"))
- model = M_MINI;
- else if (!strcmp(this_opt, "macbook"))
- model = M_MACBOOK;
- else if (!strncmp(this_opt, "height:", 7))
- manual_height = simple_strtoul(this_opt+7, NULL, 0);
- else if (!strncmp(this_opt, "width:", 6))
- manual_width = simple_strtoul(this_opt+6, NULL, 0);
- }
- return 0;
-}
-
-static int __init imacfb_probe(struct platform_device *dev)
-{
- struct fb_info *info;
- int err;
- unsigned int size_vmode;
- unsigned int size_remap;
- unsigned int size_total;
-
- screen_info.lfb_depth = 32;
- screen_info.lfb_size = DEFAULT_FB_MEM / 0x10000;
- screen_info.pages=1;
- screen_info.blue_size = 8;
- screen_info.blue_pos = 0;
- screen_info.green_size = 8;
- screen_info.green_pos = 8;
- screen_info.red_size = 8;
- screen_info.red_pos = 16;
- screen_info.rsvd_size = 8;
- screen_info.rsvd_pos = 24;
-
- switch (model) {
- case M_I17:
- screen_info.lfb_width = 1440;
- screen_info.lfb_height = 900;
- screen_info.lfb_linelength = 1472 * 4;
- screen_info.lfb_base = 0x80010000;
- break;
- case M_I20:
- screen_info.lfb_width = 1680;
- screen_info.lfb_height = 1050;
- screen_info.lfb_linelength = 1728 * 4;
- screen_info.lfb_base = 0x80010000;
- break;
- case M_MINI:
- screen_info.lfb_width = 1024;
- screen_info.lfb_height = 768;
- screen_info.lfb_linelength = 2048 * 4;
- screen_info.lfb_base = 0x80000000;
- break;
- case M_MACBOOK:
- screen_info.lfb_width = 1280;
- screen_info.lfb_height = 800;
- screen_info.lfb_linelength = 2048 * 4;
- screen_info.lfb_base = 0x80000000;
- break;
- }
-
- /* if the user wants to manually specify height/width,
- we will override the defaults */
- /* TODO: eventually get auto-detection working */
- if (manual_height > 0)
- screen_info.lfb_height = manual_height;
- if (manual_width > 0)
- screen_info.lfb_width = manual_width;
-
- imacfb_fix.smem_start = screen_info.lfb_base;
- imacfb_defined.bits_per_pixel = screen_info.lfb_depth;
- imacfb_defined.xres = screen_info.lfb_width;
- imacfb_defined.yres = screen_info.lfb_height;
- imacfb_fix.line_length = screen_info.lfb_linelength;
-
- /* size_vmode -- that is the amount of memory needed for the
- * used video mode, i.e. the minimum amount of
- * memory we need. */
- size_vmode = imacfb_defined.yres * imacfb_fix.line_length;
-
- /* size_total -- all video memory we have. Used for
- * entries, ressource allocation and bounds
- * checking. */
- size_total = screen_info.lfb_size * 65536;
- if (size_total < size_vmode)
- size_total = size_vmode;
-
- /* size_remap -- the amount of video memory we are going to
- * use for imacfb. With modern cards it is no
- * option to simply use size_total as that
- * wastes plenty of kernel address space. */
- size_remap = size_vmode * 2;
- if (size_remap < size_vmode)
- size_remap = size_vmode;
- if (size_remap > size_total)
- size_remap = size_total;
- imacfb_fix.smem_len = size_remap;
-
- if (!request_mem_region(imacfb_fix.smem_start, size_total, "imacfb")) {
- printk(KERN_WARNING
- "imacfb: cannot reserve video memory at 0x%lx\n",
- imacfb_fix.smem_start);
- /* We cannot make this fatal. Sometimes this comes from magic
- spaces our resource handlers simply don't know about */
- }
-
- info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
- if (!info) {
- err = -ENOMEM;
- goto err_release_mem;
- }
- info->pseudo_palette = info->par;
- info->par = NULL;
-
- info->screen_base = ioremap(imacfb_fix.smem_start, imacfb_fix.smem_len);
- if (!info->screen_base) {
- printk(KERN_ERR "imacfb: abort, cannot ioremap video memory "
- "0x%x @ 0x%lx\n",
- imacfb_fix.smem_len, imacfb_fix.smem_start);
- err = -EIO;
- goto err_unmap;
- }
-
- printk(KERN_INFO "imacfb: framebuffer at 0x%lx, mapped to 0x%p, "
- "using %dk, total %dk\n",
- imacfb_fix.smem_start, info->screen_base,
- size_remap/1024, size_total/1024);
- printk(KERN_INFO "imacfb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
- imacfb_defined.xres, imacfb_defined.yres,
- imacfb_defined.bits_per_pixel, imacfb_fix.line_length,
- screen_info.pages);
-
- imacfb_defined.xres_virtual = imacfb_defined.xres;
- imacfb_defined.yres_virtual = imacfb_fix.smem_len /
- imacfb_fix.line_length;
- printk(KERN_INFO "imacfb: scrolling: redraw\n");
- imacfb_defined.yres_virtual = imacfb_defined.yres;
-
- /* some dummy values for timing to make fbset happy */
- imacfb_defined.pixclock = 10000000 / imacfb_defined.xres *
- 1000 / imacfb_defined.yres;
- imacfb_defined.left_margin = (imacfb_defined.xres / 8) & 0xf8;
- imacfb_defined.hsync_len = (imacfb_defined.xres / 8) & 0xf8;
-
- imacfb_defined.red.offset = screen_info.red_pos;
- imacfb_defined.red.length = screen_info.red_size;
- imacfb_defined.green.offset = screen_info.green_pos;
- imacfb_defined.green.length = screen_info.green_size;
- imacfb_defined.blue.offset = screen_info.blue_pos;
- imacfb_defined.blue.length = screen_info.blue_size;
- imacfb_defined.transp.offset = screen_info.rsvd_pos;
- imacfb_defined.transp.length = screen_info.rsvd_size;
-
- printk(KERN_INFO "imacfb: %s: "
- "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
- "Truecolor",
- screen_info.rsvd_size,
- screen_info.red_size,
- screen_info.green_size,
- screen_info.blue_size,
- screen_info.rsvd_pos,
- screen_info.red_pos,
- screen_info.green_pos,
- screen_info.blue_pos);
-
- imacfb_fix.ypanstep = 0;
- imacfb_fix.ywrapstep = 0;
-
- /* request failure does not faze us, as vgacon probably has this
- * region already (FIXME) */
- request_region(0x3c0, 32, "imacfb");
-
- info->fbops = &imacfb_ops;
- info->var = imacfb_defined;
- info->fix = imacfb_fix;
- info->flags = FBINFO_FLAG_DEFAULT;
-
- if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
- err = -ENOMEM;
- goto err_unmap;
- }
- if (register_framebuffer(info)<0) {
- err = -EINVAL;
- goto err_fb_dealoc;
- }
- printk(KERN_INFO "fb%d: %s frame buffer device\n",
- info->node, info->fix.id);
- return 0;
-
-err_fb_dealoc:
- fb_dealloc_cmap(&info->cmap);
-err_unmap:
- iounmap(info->screen_base);
- framebuffer_release(info);
-err_release_mem:
- release_mem_region(imacfb_fix.smem_start, size_total);
- return err;
-}
-
-static struct platform_driver imacfb_driver = {
- .probe = imacfb_probe,
- .driver = {
- .name = "imacfb",
- },
-};
-
-static struct platform_device imacfb_device = {
- .name = "imacfb",
-};
-
-static int __init imacfb_init(void)
-{
- int ret;
- char *option = NULL;
-
- if (!efi_enabled)
- return -ENODEV;
- if (!dmi_check_system(dmi_system_table))
- return -ENODEV;
- if (model == M_UNKNOWN)
- return -ENODEV;
-
- if (fb_get_options("imacfb", &option))
- return -ENODEV;
-
- imacfb_setup(option);
- ret = platform_driver_register(&imacfb_driver);
-
- if (!ret) {
- ret = platform_device_register(&imacfb_device);
- if (ret)
- platform_driver_unregister(&imacfb_driver);
- }
- return ret;
-}
-module_init(imacfb_init);
-
-MODULE_LICENSE("GPL");
projects / linux-2.6-omap-h63xx.git / blobdiff