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| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-04-06 22:01:23 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-05-08 21:28:34 +0200 |
| commit | e7f70907bab2d511e94482eb606f6e3e629f52f9 (patch) | |
| tree | a21f3c6c64802396bbc8e8688a2cc05e8810cc2a | |
| parent | 59c2c8b07966a06fd742bc79efb960b8a900fbbc (diff) | |
| download | coreboot-e7f70907bab2d511e94482eb606f6e3e629f52f9.tar.xz | |
northbridge/intel/gm45/gma: Add backlight control register field
This allows the backlight control register to be set via devicetree.cb
Change-Id: I32b42dfc1cc609fb6f8995c6158c85be67633770
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/9330
Tested-by: build bot (Jenkins)
| -rw-r--r-- | src/drivers/intel/gma/i915.h | 1 | ||||
| -rw-r--r-- | src/northbridge/intel/gm45/gma.c | 8 |
2 files changed, 7 insertions, 2 deletions
diff --git a/src/drivers/intel/gma/i915.h b/src/drivers/intel/gma/i915.h index 0d5b8af8ef..36ac5fc6d1 100644 --- a/src/drivers/intel/gma/i915.h +++ b/src/drivers/intel/gma/i915.h @@ -291,6 +291,7 @@ struct i915_gpu_controller_info int lvds_dual_channel; int link_frequency_270_mhz; int lvds_num_lanes; + u32 backlight; }; int i915lightup(unsigned int physbase, unsigned int mmio, diff --git a/src/northbridge/intel/gm45/gma.c b/src/northbridge/intel/gm45/gma.c index 4cf2776162..b08422a02f 100644 --- a/src/northbridge/intel/gm45/gma.c +++ b/src/northbridge/intel/gm45/gma.c @@ -446,12 +446,13 @@ static void gma_func0_init(struct device *dev) /* Init graphics power management */ gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); + struct northbridge_intel_gm45_config *conf = dev->chip_info; + #if !CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT /* PCI Init, will run VBIOS */ pci_dev_init(dev); #else u32 physbase; - struct northbridge_intel_gm45_config *conf = dev->chip_info; struct resource *lfb_res; struct resource *pio_res; @@ -475,7 +476,10 @@ static void gma_func0_init(struct device *dev) /* Post VBIOS init */ /* Enable Backlight */ gtt_write(BLC_PWM_CTL2, (1 << 31)); - gtt_write(BLC_PWM_CTL, 0x06100610); + if (conf->gfx.backlight == 0) + gtt_write(BLC_PWM_CTL, 0x06100610); + else + gtt_write(BLC_PWM_CTL, conf->gfx.backlight); } static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned device) |