diff options
Diffstat (limited to 'drivers/video/imacfb.c')
| -rw-r--r-- | drivers/video/imacfb.c | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/video/imacfb.c b/drivers/video/imacfb.c index 9366ef2..e69de29 100644 --- a/drivers/video/imacfb.c +++ b/drivers/video/imacfb.c @@ -1,376 +0,0 @@ -/* - * 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"); |