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drivers/video/efifb.c
17.8 KB
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/* * Framebuffer driver for EFI/UEFI based system * * (c) 2006 Edgar Hucek <gimli@dark-green.com> * Original efi driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de> * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/fb.h> #include <linux/platform_device.h> #include <linux/screen_info.h> |
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#include <linux/dmi.h> |
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#include <linux/pci.h> |
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#include <video/vga.h> |
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static bool request_mem_succeeded = false; |
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static struct fb_var_screeninfo efifb_defined __devinitdata = { |
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.activate = FB_ACTIVATE_NOW, .height = -1, .width = -1, .right_margin = 32, .upper_margin = 16, .lower_margin = 4, .vsync_len = 4, .vmode = FB_VMODE_NONINTERLACED, }; |
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static struct fb_fix_screeninfo efifb_fix __devinitdata = { |
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.id = "EFI VGA", .type = FB_TYPE_PACKED_PIXELS, .accel = FB_ACCEL_NONE, .visual = FB_VISUAL_TRUECOLOR, }; |
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enum { M_I17, /* 17-Inch iMac */ M_I20, /* 20-Inch iMac */ M_I20_SR, /* 20-Inch iMac (Santa Rosa) */ M_I24, /* 24-Inch iMac */ |
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M_I24_8_1, /* 24-Inch iMac, 8,1th gen */ M_I24_10_1, /* 24-Inch iMac, 10,1th gen */ M_I27_11_1, /* 27-Inch iMac, 11,1th gen */ |
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M_MINI, /* Mac Mini */ |
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M_MINI_3_1, /* Mac Mini, 3,1th gen */ M_MINI_4_1, /* Mac Mini, 4,1th gen */ |
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M_MB, /* MacBook */ M_MB_2, /* MacBook, 2nd rev. */ M_MB_3, /* MacBook, 3rd rev. */ |
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M_MB_5_1, /* MacBook, 5th rev. */ M_MB_6_1, /* MacBook, 6th rev. */ M_MB_7_1, /* MacBook, 7th rev. */ |
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M_MB_SR, /* MacBook, 2nd gen, (Santa Rosa) */ M_MBA, /* MacBook Air */ |
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M_MBA_3, /* Macbook Air, 3rd rev */ |
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M_MBP, /* MacBook Pro */ M_MBP_2, /* MacBook Pro 2nd gen */ |
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M_MBP_2_2, /* MacBook Pro 2,2nd gen */ |
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M_MBP_SR, /* MacBook Pro (Santa Rosa) */ M_MBP_4, /* MacBook Pro, 4th gen */ |
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M_MBP_5_1, /* MacBook Pro, 5,1th gen */ |
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M_MBP_5_2, /* MacBook Pro, 5,2th gen */ M_MBP_5_3, /* MacBook Pro, 5,3rd gen */ M_MBP_6_1, /* MacBook Pro, 6,1th gen */ M_MBP_6_2, /* MacBook Pro, 6,2th gen */ M_MBP_7_1, /* MacBook Pro, 7,1th gen */ |
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M_MBP_8_2, /* MacBook Pro, 8,2nd gen */ |
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M_UNKNOWN /* placeholder */ }; |
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#define OVERRIDE_NONE 0x0 #define OVERRIDE_BASE 0x1 #define OVERRIDE_STRIDE 0x2 #define OVERRIDE_HEIGHT 0x4 #define OVERRIDE_WIDTH 0x8 |
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static struct efifb_dmi_info { char *optname; unsigned long base; int stride; int width; int height; |
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int flags; |
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} dmi_list[] __initdata = { |
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[M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, /* guess */ [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050, OVERRIDE_NONE }, [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, /* guess */ [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080, OVERRIDE_NONE }, [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440, OVERRIDE_NONE }, [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768, OVERRIDE_NONE }, [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768, OVERRIDE_NONE }, [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, |
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/* 11" Macbook Air 3,1 passes the wrong stride */ [M_MBA_3] = { "mba3", 0, 2048 * 4, 0, 0, OVERRIDE_STRIDE }, |
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[M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, [M_MBP_2] = { "mbp2", 0, 0, 0, 0, OVERRIDE_NONE }, /* placeholder */ [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900, OVERRIDE_NONE }, [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200, OVERRIDE_NONE }, [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050, OVERRIDE_NONE }, [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800, OVERRIDE_NONE }, [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900, OVERRIDE_NONE }, [M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE } |
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}; static int set_system(const struct dmi_system_id *id); #define EFIFB_DMI_SYSTEM_ID(vendor, name, enumid) \ { set_system, name, { \ DMI_MATCH(DMI_BIOS_VENDOR, vendor), \ DMI_MATCH(DMI_PRODUCT_NAME, name) }, \ &dmi_list[enumid] } |
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static const struct dmi_system_id dmi_system_table[] __initconst = { |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac4,1", M_I17), /* At least one of these two will be right; maybe both? */ EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac5,1", M_I20), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac5,1", M_I20), /* At least one of these two will be right; maybe both? */ EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "iMac6,1", M_I24), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac6,1", M_I24), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac7,1", M_I20_SR), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac8,1", M_I24_8_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac10,1", M_I24_10_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "iMac11,1", M_I27_11_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "Macmini1,1", M_MINI), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini3,1", M_MINI_3_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "Macmini4,1", M_MINI_4_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook1,1", M_MB), /* At least one of these two will be right; maybe both? */ EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook2,1", M_MB), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook2,1", M_MB), /* At least one of these two will be right; maybe both? */ EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBook3,1", M_MB), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook3,1", M_MB), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook4,1", M_MB), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook5,1", M_MB_5_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook6,1", M_MB_6_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBook7,1", M_MB_7_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir1,1", M_MBA), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookAir3,1", M_MBA_3), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro1,1", M_MBP), EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,1", M_MBP_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro2,2", M_MBP_2_2), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro2,1", M_MBP_2), EFIFB_DMI_SYSTEM_ID("Apple Computer, Inc.", "MacBookPro3,1", M_MBP_SR), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro3,1", M_MBP_SR), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro4,1", M_MBP_4), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,1", M_MBP_5_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,2", M_MBP_5_2), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro5,3", M_MBP_5_3), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,1", M_MBP_6_1), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro6,2", M_MBP_6_2), EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro7,1", M_MBP_7_1), |
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EFIFB_DMI_SYSTEM_ID("Apple Inc.", "MacBookPro8,2", M_MBP_8_2), |
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{}, }; |
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#define choose_value(dmivalue, fwvalue, field, flags) ({ \ typeof(fwvalue) _ret_ = fwvalue; \ if ((flags) & (field)) \ _ret_ = dmivalue; \ else if ((fwvalue) == 0) \ _ret_ = dmivalue; \ _ret_; \ }) |
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static int set_system(const struct dmi_system_id *id) { struct efifb_dmi_info *info = id->driver_data; |
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|
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if (info->base == 0 && info->height == 0 && info->width == 0 && info->stride == 0) return 0; |
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/* Trust the bootloader over the DMI tables */ |
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if (screen_info.lfb_base == 0) { #if defined(CONFIG_PCI) struct pci_dev *dev = NULL; int found_bar = 0; #endif |
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if (info->base) { screen_info.lfb_base = choose_value(info->base, screen_info.lfb_base, OVERRIDE_BASE, info->flags); |
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|
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#if defined(CONFIG_PCI) |
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/* make sure that the address in the table is actually * on a VGA device's PCI BAR */ for_each_pci_dev(dev) { int i; if ((dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) continue; for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { resource_size_t start, end; start = pci_resource_start(dev, i); if (start == 0) break; end = pci_resource_end(dev, i); if (screen_info.lfb_base >= start && screen_info.lfb_base < end) { found_bar = 1; } |
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} } |
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if (!found_bar) screen_info.lfb_base = 0; |
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#endif |
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} |
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} if (screen_info.lfb_base) { |
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screen_info.lfb_linelength = choose_value(info->stride, screen_info.lfb_linelength, OVERRIDE_STRIDE, info->flags); screen_info.lfb_width = choose_value(info->width, screen_info.lfb_width, OVERRIDE_WIDTH, info->flags); screen_info.lfb_height = choose_value(info->height, screen_info.lfb_height, OVERRIDE_HEIGHT, info->flags); |
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if (screen_info.orig_video_isVGA == 0) screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; } else { screen_info.lfb_linelength = 0; screen_info.lfb_width = 0; screen_info.lfb_height = 0; screen_info.orig_video_isVGA = 0; return 0; } |
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|
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printk(KERN_INFO "efifb: dmi detected %s - framebuffer at 0x%08x " |
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"(%dx%d, stride %d) ", id->ident, |
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screen_info.lfb_base, screen_info.lfb_width, |
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screen_info.lfb_height, screen_info.lfb_linelength); |
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return 1; |
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} |
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static int efifb_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; } |
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static void efifb_destroy(struct fb_info *info) { if (info->screen_base) iounmap(info->screen_base); |
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if (request_mem_succeeded) release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size); |
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framebuffer_release(info); } |
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static struct fb_ops efifb_ops = { .owner = THIS_MODULE, |
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.fb_destroy = efifb_destroy, |
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.fb_setcolreg = efifb_setcolreg, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, }; |
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static int __init efifb_setup(char *options) { char *this_opt; int i; if (!options || !*options) return 0; while ((this_opt = strsep(&options, ",")) != NULL) { if (!*this_opt) continue; for (i = 0; i < M_UNKNOWN; i++) { if (!strcmp(this_opt, dmi_list[i].optname) && dmi_list[i].base != 0) { screen_info.lfb_base = dmi_list[i].base; screen_info.lfb_linelength = dmi_list[i].stride; screen_info.lfb_width = dmi_list[i].width; screen_info.lfb_height = dmi_list[i].height; } } if (!strncmp(this_opt, "base:", 5)) screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0); else if (!strncmp(this_opt, "stride:", 7)) screen_info.lfb_linelength = simple_strtoul(this_opt+7, NULL, 0) * 4; else if (!strncmp(this_opt, "height:", 7)) screen_info.lfb_height = simple_strtoul(this_opt+7, NULL, 0); else if (!strncmp(this_opt, "width:", 6)) screen_info.lfb_width = simple_strtoul(this_opt+6, NULL, 0); } return 0; } |
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static int __init efifb_probe(struct platform_device *dev) |
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{ struct fb_info *info; int err; unsigned int size_vmode; unsigned int size_remap; unsigned int size_total; |
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|
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if (!screen_info.lfb_depth) screen_info.lfb_depth = 32; if (!screen_info.pages) screen_info.pages = 1; |
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if (!screen_info.lfb_base) { printk(KERN_DEBUG "efifb: invalid framebuffer address "); return -ENODEV; } printk(KERN_INFO "efifb: probing for efifb "); |
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/* just assume they're all unset if any are */ if (!screen_info.blue_size) { 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; } |
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efifb_fix.smem_start = screen_info.lfb_base; efifb_defined.bits_per_pixel = screen_info.lfb_depth; efifb_defined.xres = screen_info.lfb_width; efifb_defined.yres = screen_info.lfb_height; efifb_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 = efifb_defined.yres * efifb_fix.line_length; /* size_total -- all video memory we have. Used for * entries, ressource allocation and bounds * checking. */ size_total = screen_info.lfb_size; if (size_total < size_vmode) size_total = size_vmode; /* size_remap -- the amount of video memory we are going to * use for efifb. 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; |
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if (size_remap > size_total) size_remap = size_total; |
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if (size_remap % PAGE_SIZE) size_remap += PAGE_SIZE - (size_remap % PAGE_SIZE); |
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efifb_fix.smem_len = size_remap; |
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if (request_mem_region(efifb_fix.smem_start, size_remap, "efifb")) { |
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request_mem_succeeded = true; |
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} else { |
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/* We cannot make this fatal. Sometimes this comes from magic spaces our resource handlers simply don't know about */ printk(KERN_WARNING "efifb: cannot reserve video memory at 0x%lx ", efifb_fix.smem_start); |
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} |
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info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev); if (!info) { |
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printk(KERN_ERR "efifb: cannot allocate framebuffer "); |
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err = -ENOMEM; goto err_release_mem; } info->pseudo_palette = info->par; info->par = NULL; |
1471ca9aa fbdev: allow pass... |
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info->apertures = alloc_apertures(1); if (!info->apertures) { err = -ENOMEM; goto err_release_fb; } info->apertures->ranges[0].base = efifb_fix.smem_start; info->apertures->ranges[0].size = size_remap; |
4410f3910 fbdev: add suppor... |
405 |
|
3c004b4f7 efifb: Enable wri... |
406 |
info->screen_base = ioremap_wc(efifb_fix.smem_start, efifb_fix.smem_len); |
7c83172b9 x86_64 EFI boot s... |
407 408 409 410 411 412 |
if (!info->screen_base) { printk(KERN_ERR "efifb: abort, cannot ioremap video memory " "0x%x @ 0x%lx ", efifb_fix.smem_len, efifb_fix.smem_start); err = -EIO; |
7c08c9ae0 efifb/imacfb cons... |
413 |
goto err_release_fb; |
7c83172b9 x86_64 EFI boot s... |
414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 |
} printk(KERN_INFO "efifb: framebuffer at 0x%lx, mapped to 0x%p, " "using %dk, total %dk ", efifb_fix.smem_start, info->screen_base, size_remap/1024, size_total/1024); printk(KERN_INFO "efifb: mode is %dx%dx%d, linelength=%d, pages=%d ", efifb_defined.xres, efifb_defined.yres, efifb_defined.bits_per_pixel, efifb_fix.line_length, screen_info.pages); efifb_defined.xres_virtual = efifb_defined.xres; efifb_defined.yres_virtual = efifb_fix.smem_len / efifb_fix.line_length; printk(KERN_INFO "efifb: scrolling: redraw "); efifb_defined.yres_virtual = efifb_defined.yres; /* some dummy values for timing to make fbset happy */ efifb_defined.pixclock = 10000000 / efifb_defined.xres * 1000 / efifb_defined.yres; efifb_defined.left_margin = (efifb_defined.xres / 8) & 0xf8; efifb_defined.hsync_len = (efifb_defined.xres / 8) & 0xf8; efifb_defined.red.offset = screen_info.red_pos; efifb_defined.red.length = screen_info.red_size; efifb_defined.green.offset = screen_info.green_pos; efifb_defined.green.length = screen_info.green_size; efifb_defined.blue.offset = screen_info.blue_pos; efifb_defined.blue.length = screen_info.blue_size; efifb_defined.transp.offset = screen_info.rsvd_pos; efifb_defined.transp.length = screen_info.rsvd_size; printk(KERN_INFO "efifb: %s: " "size=%d:%d:%d:%d, shift=%d:%d:%d:%d ", "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); efifb_fix.ypanstep = 0; efifb_fix.ywrapstep = 0; info->fbops = &efifb_ops; info->var = efifb_defined; info->fix = efifb_fix; |
4410f3910 fbdev: add suppor... |
468 |
info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE; |
7c83172b9 x86_64 EFI boot s... |
469 |
|
7c08c9ae0 efifb/imacfb cons... |
470 471 472 |
if ((err = fb_alloc_cmap(&info->cmap, 256, 0)) < 0) { printk(KERN_ERR "efifb: cannot allocate colormap "); |
7c83172b9 x86_64 EFI boot s... |
473 474 |
goto err_unmap; } |
7c08c9ae0 efifb/imacfb cons... |
475 476 477 |
if ((err = register_framebuffer(info)) < 0) { printk(KERN_ERR "efifb: cannot register framebuffer "); |
7c83172b9 x86_64 EFI boot s... |
478 479 480 481 |
goto err_fb_dealoc; } printk(KERN_INFO "fb%d: %s frame buffer device ", |
7c08c9ae0 efifb/imacfb cons... |
482 |
info->node, info->fix.id); |
7c83172b9 x86_64 EFI boot s... |
483 484 485 486 487 488 |
return 0; err_fb_dealoc: fb_dealloc_cmap(&info->cmap); err_unmap: iounmap(info->screen_base); |
7c08c9ae0 efifb/imacfb cons... |
489 |
err_release_fb: |
7c83172b9 x86_64 EFI boot s... |
490 491 |
framebuffer_release(info); err_release_mem: |
da0241f12 efifb: Fix mismat... |
492 |
if (request_mem_succeeded) |
7c08c9ae0 efifb/imacfb cons... |
493 |
release_mem_region(efifb_fix.smem_start, size_total); |
7c83172b9 x86_64 EFI boot s... |
494 495 496 497 |
return err; } static struct platform_driver efifb_driver = { |
7c83172b9 x86_64 EFI boot s... |
498 499 500 501 502 503 504 505 506 507 508 509 |
.driver = { .name = "efifb", }, }; static struct platform_device efifb_device = { .name = "efifb", }; static int __init efifb_init(void) { int ret; |
7c08c9ae0 efifb/imacfb cons... |
510 |
char *option = NULL; |
7c83172b9 x86_64 EFI boot s... |
511 |
|
e14a685df efifb: dmi set vi... |
512 |
dmi_check_system(dmi_system_table); |
7c83172b9 x86_64 EFI boot s... |
513 514 |
if (screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) return -ENODEV; |
7c08c9ae0 efifb/imacfb cons... |
515 516 517 518 519 520 521 522 523 524 525 |
if (fb_get_options("efifb", &option)) return -ENODEV; efifb_setup(option); /* We don't get linelength from UGA Draw Protocol, only from * EFI Graphics Protocol. So if it's not in DMI, and it's not * passed in from the user, we really can't use the framebuffer. */ if (!screen_info.lfb_linelength) return -ENODEV; |
7c83172b9 x86_64 EFI boot s... |
526 |
|
bb8b26627 efifb: Disallow m... |
527 528 529 |
ret = platform_device_register(&efifb_device); if (ret) return ret; |
7c83172b9 x86_64 EFI boot s... |
530 |
|
bb8b26627 efifb: Disallow m... |
531 532 533 534 535 536 537 |
/* * This is not just an optimization. We will interfere * with a real driver if we get reprobed, so don't allow * it. */ ret = platform_driver_probe(&efifb_driver, efifb_probe); if (ret) { |
e6b8480cd efifb: Fix call t... |
538 |
platform_device_unregister(&efifb_device); |
bb8b26627 efifb: Disallow m... |
539 |
return ret; |
7c83172b9 x86_64 EFI boot s... |
540 |
} |
bb8b26627 efifb: Disallow m... |
541 |
|
7c83172b9 x86_64 EFI boot s... |
542 543 544 545 546 |
return ret; } module_init(efifb_init); MODULE_LICENSE("GPL"); |