diff options
| -rw-r--r-- | drivers/video/efifb.c | 149 |
1 files changed, 88 insertions, 61 deletions
diff --git a/drivers/video/efifb.c b/drivers/video/efifb.c index a9645b86a623..2359b6403a16 100644 --- a/drivers/video/efifb.c +++ b/drivers/video/efifb.c @@ -68,41 +68,48 @@ enum { M_UNKNOWN /* placeholder */ }; +#define OVERRIDE_NONE 0x0 +#define OVERRIDE_BASE 0x1 +#define OVERRIDE_STRIDE 0x2 +#define OVERRIDE_HEIGHT 0x4 +#define OVERRIDE_WIDTH 0x8 + static struct efifb_dmi_info { char *optname; unsigned long base; int stride; int width; int height; + int flags; } dmi_list[] __initdata = { - [M_I17] = { "i17", 0x80010000, 1472 * 4, 1440, 900 }, - [M_I20] = { "i20", 0x80010000, 1728 * 4, 1680, 1050 }, /* guess */ - [M_I20_SR] = { "imac7", 0x40010000, 1728 * 4, 1680, 1050 }, - [M_I24] = { "i24", 0x80010000, 2048 * 4, 1920, 1200 }, /* guess */ - [M_I24_8_1] = { "imac8", 0xc0060000, 2048 * 4, 1920, 1200 }, - [M_I24_10_1] = { "imac10", 0xc0010000, 2048 * 4, 1920, 1080 }, - [M_I27_11_1] = { "imac11", 0xc0010000, 2560 * 4, 2560, 1440 }, - [M_MINI]= { "mini", 0x80000000, 2048 * 4, 1024, 768 }, - [M_MINI_3_1] = { "mini31", 0x40010000, 1024 * 4, 1024, 768 }, - [M_MINI_4_1] = { "mini41", 0xc0010000, 2048 * 4, 1920, 1200 }, - [M_MB] = { "macbook", 0x80000000, 2048 * 4, 1280, 800 }, - [M_MB_5_1] = { "macbook51", 0x80010000, 2048 * 4, 1280, 800 }, - [M_MB_6_1] = { "macbook61", 0x80010000, 2048 * 4, 1280, 800 }, - [M_MB_7_1] = { "macbook71", 0x80010000, 2048 * 4, 1280, 800 }, - [M_MBA] = { "mba", 0x80000000, 2048 * 4, 1280, 800 }, - [M_MBP] = { "mbp", 0x80010000, 1472 * 4, 1440, 900 }, - [M_MBP_2] = { "mbp2", 0, 0, 0, 0 }, /* placeholder */ - [M_MBP_2_2] = { "mbp22", 0x80010000, 1472 * 4, 1440, 900 }, - [M_MBP_SR] = { "mbp3", 0x80030000, 2048 * 4, 1440, 900 }, - [M_MBP_4] = { "mbp4", 0xc0060000, 2048 * 4, 1920, 1200 }, - [M_MBP_5_1] = { "mbp51", 0xc0010000, 2048 * 4, 1440, 900 }, - [M_MBP_5_2] = { "mbp52", 0xc0010000, 2048 * 4, 1920, 1200 }, - [M_MBP_5_3] = { "mbp53", 0xd0010000, 2048 * 4, 1440, 900 }, - [M_MBP_6_1] = { "mbp61", 0x90030000, 2048 * 4, 1920, 1200 }, - [M_MBP_6_2] = { "mbp62", 0x90030000, 2048 * 4, 1680, 1050 }, - [M_MBP_7_1] = { "mbp71", 0xc0010000, 2048 * 4, 1280, 800 }, - [M_MBP_8_2] = { "mbp82", 0x90010000, 1472 * 4, 1440, 900 }, - [M_UNKNOWN] = { NULL, 0, 0, 0, 0 } + [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 }, + [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 } }; static int set_system(const struct dmi_system_id *id); @@ -157,16 +164,22 @@ static const struct dmi_system_id dmi_system_table[] __initconst = { {}, }; +#define choose_value(dmivalue, fwvalue, field, flags) ({ \ + typeof(fwvalue) _ret_ = fwvalue; \ + if ((flags) & (field)) \ + _ret_ = dmivalue; \ + else if ((fwvalue) == 0) \ + _ret_ = dmivalue; \ + _ret_; \ + }) + static int set_system(const struct dmi_system_id *id) { struct efifb_dmi_info *info = id->driver_data; - if (info->base == 0) - return 0; - printk(KERN_INFO "efifb: dmi detected %s - framebuffer at %p " - "(%dx%d, stride %d)\n", id->ident, - (void *)info->base, info->width, info->height, - info->stride); + if (info->base == 0 && info->height == 0 && info->width == 0 + && info->stride == 0) + return 0; /* Trust the bootloader over the DMI tables */ if (screen_info.lfb_base == 0) { @@ -174,40 +187,47 @@ static int set_system(const struct dmi_system_id *id) struct pci_dev *dev = NULL; int found_bar = 0; #endif - screen_info.lfb_base = info->base; + if (info->base) { + screen_info.lfb_base = choose_value(info->base, + screen_info.lfb_base, OVERRIDE_BASE, + info->flags); #if defined(CONFIG_PCI) - /* 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; + /* 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; + } } } - } - if (!found_bar) - screen_info.lfb_base = 0; + if (!found_bar) + screen_info.lfb_base = 0; #endif + } } if (screen_info.lfb_base) { - if (screen_info.lfb_linelength == 0) - screen_info.lfb_linelength = info->stride; - if (screen_info.lfb_width == 0) - screen_info.lfb_width = info->width; - if (screen_info.lfb_height == 0) - screen_info.lfb_height = info->height; + 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); if (screen_info.orig_video_isVGA == 0) screen_info.orig_video_isVGA = VIDEO_TYPE_EFI; } else { @@ -217,6 +237,13 @@ static int set_system(const struct dmi_system_id *id) screen_info.orig_video_isVGA = 0; return 0; } + + printk(KERN_INFO "efifb: dmi detected %s - framebuffer at %p " + "(%dx%d, stride %d)\n", id->ident, + (void *)screen_info.lfb_base, screen_info.lfb_width, + screen_info.lfb_height, screen_info.lfb_linelength); + + return 1; } |