Patch set updated for coreboot: northbridge/i945/gma: Re-enable NVRAM tft_brightness

[Alexander Couzens]

Alexander Couzens ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14002

-gerrit

commit d0cdee89d8477a89d769b981e66bef1566947373
Author: Alexander Couzens 
Date:   Wed Mar 9 10:42:58 2016 +0100

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 
---
 src/northbridge/intel/i945/gma.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/northbridge/intel/i945/gma.c b/src/northbridge/intel/i945/gma.c
index bd0a178..df13ef4 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)