From c7a1a3e994135bb405662e2f52d0b22efa899c3d Mon Sep 17 00:00:00 2001 From: Alexander Couzens Date: Wed, 9 Mar 2016 10:42:58 +0100 Subject: northbridge/i945/gma: Re-enable NVRAM tft_brightness Commit 71512b2c (northbridge/i945/gma: fix build error with native graphics init) unintentionally changed the code to ignore the NVRAM setting `tft_brightness`. Revert that hunk to restore the original behavior. Change-Id: Iffdfc5272732bad3476f35ddac1f5a7564270531 Signed-off-by: Alexander Couzens Reviewed-on: https://review.coreboot.org/14002 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/northbridge/intel/i945/gma.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c index bd0a178939..df13ef4950 100644 --- a/src/northbridge/intel/i945/gma.c +++ b/src/northbridge/intel/i945/gma.c @@ -465,14 +465,17 @@ static void gma_func0_disable(struct device *dev) static void gma_func1_init(struct device *dev) { u32 reg32; + u8 val; /* IGD needs to be Bus Master, also enable IO accesss */ reg32 = pci_read_config32(dev, PCI_COMMAND); pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); - /* Permanently set tft_brightness to 0xff. Ignore nvramtool configuration */ - pci_write_config8(dev, 0xf4, 0xff); + if (get_option(&val, "tft_brightness") == CB_SUCCESS) + pci_write_config8(dev, 0xf4, val); + else + pci_write_config8(dev, 0xf4, 0xff); } static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) -- cgit v1.2.3