diff options
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/nehalem/gma.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/src/northbridge/intel/nehalem/gma.c b/src/northbridge/intel/nehalem/gma.c index 609701de95..9abbdea5c9 100644 --- a/src/northbridge/intel/nehalem/gma.c +++ b/src/northbridge/intel/nehalem/gma.c @@ -644,6 +644,7 @@ static void intel_gma_init(const struct northbridge_intel_nehalem_config *info, int i; u8 edid_data[128]; struct edid edid; + struct edid_mode *mode; u32 hactive, vactive, right_border, bottom_border; int hpolarity, vpolarity; u32 vsync, hsync, vblank, hblank, hfront_porch, vfront_porch; @@ -703,25 +704,26 @@ static void intel_gma_init(const struct northbridge_intel_nehalem_config *info, intel_gmbus_stop(mmio + PCH_GMBUS0); decode_edid(edid_data, sizeof(edid_data), &edid); + mode = &edid.mode; /* Disable screen memory to prevent garbage from appearing. */ vga_sr_write(1, vga_sr_read(1) | 0x20); hactive = edid.x_resolution; vactive = edid.y_resolution; - right_border = edid.hborder; - bottom_border = edid.vborder; - hpolarity = (edid.phsync == '-'); - vpolarity = (edid.pvsync == '-'); - vsync = edid.vspw; - hsync = edid.hspw; - vblank = edid.vbl; - hblank = edid.hbl; - hfront_porch = edid.hso; - vfront_porch = edid.vso; - - target_frequency = info->gfx.lvds_dual_channel ? edid.pixel_clock - : (2 * edid.pixel_clock); + right_border = mode->hborder; + bottom_border = mode->vborder; + hpolarity = (mode->phsync == '-'); + vpolarity = (mode->pvsync == '-'); + vsync = mode->vspw; + hsync = mode->hspw; + vblank = mode->vbl; + hblank = mode->hbl; + hfront_porch = mode->hso; + vfront_porch = mode->vso; + + target_frequency = info->gfx.lvds_dual_channel ? mode->pixel_clock + : (2 * mode->pixel_clock); vga_textmode_init(); #if IS_ENABLED(CONFIG_FRAMEBUFFER_KEEP_VESA_MODE) vga_sr_write(1, 1); @@ -788,8 +790,8 @@ static void intel_gma_init(const struct northbridge_intel_nehalem_config *info, return; } - link_m1 = ((uint64_t)link_n1 * edid.pixel_clock) / link_frequency; - data_m1 = ((uint64_t)data_n1 * 18 * edid.pixel_clock) + link_m1 = ((uint64_t)link_n1 * mode->pixel_clock) / link_frequency; + data_m1 = ((uint64_t)data_n1 * 18 * mode->pixel_clock) / (link_frequency * 8 * (info->gfx.lvds_num_lanes ? : 4)); printk(BIOS_INFO, "bringing up panel at resolution %d x %d\n", |