diff options
Diffstat (limited to 'src/northbridge/intel/i945/gma.c')
| -rw-r--r-- | src/northbridge/intel/i945/gma.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c index eeb377aaa8..7fcd67020c 100644 --- a/src/northbridge/intel/i945/gma.c +++ b/src/northbridge/intel/i945/gma.c @@ -557,18 +557,20 @@ static int intel_gma_init_vga(struct northbridge_intel_i945_config *conf, /* compare the header of the vga edid header */ /* if vga is not connected it should have a correct header */ -static int vga_connected(u8 *pmmio) { +static int probe_edid(u8 *pmmio, u8 slave) +{ u8 vga_edid[128]; u8 header[8] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00}; - intel_gmbus_read_edid(pmmio + GMBUS0, 2, 0x50, vga_edid, 128); + intel_gmbus_read_edid(pmmio + GMBUS0, slave, 0x50, vga_edid, 128); intel_gmbus_stop(pmmio + GMBUS0); for (int i = 0; i < 8; i++) { if (vga_edid[i] != header[i]) { - printk(BIOS_DEBUG, "VGA not connected. Using LVDS display\n"); + printk(BIOS_DEBUG, "No display connected on slave %d\n", + slave); return 0; } } - printk(BIOS_SPEW, "VGA display connected\n"); + printk(BIOS_SPEW, "Found a display on slave %d\n", slave); return 1; } @@ -613,7 +615,9 @@ static void gma_func0_init(struct device *dev) ); int err; - if (vga_connected(mmiobase)) + /* probe if VGA is connected and alway run */ + /* VGA init if no LVDS is connected */ + if (!probe_edid(mmiobase, 3) || probe_edid(mmiobase, 2)) err = intel_gma_init_vga(conf, pci_read_config32(dev, 0x5c) & ~0xf, iobase, mmiobase, graphics_base); else |