drm/i915: Initialize panel timing registers if VBIOS did not
The time between start of the pixel clock and backlight enable is a basic
panel timing constraint. If the Panel Power On/Off registers are found
to be 0, assume we are booting without VBIOS initialization and set these
registers to something reasonable.
Change-Id: Ibed6cc10d46bf52fd92e0beb25ae3525b5eef99d
Signed-off-by: Bryan Freed <bfreed@chromium.org>
[ickle: rearranged into a separate function to distinguish its role from
simply parsing the VBIOS tables.]
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h
index e1a598f..5f8e4ed 100644
--- a/drivers/gpu/drm/i915/intel_bios.h
+++ b/drivers/gpu/drm/i915/intel_bios.h
@@ -467,7 +467,8 @@
struct edp_link_params link_params[16];
} __attribute__ ((packed));
-bool intel_init_bios(struct drm_device *dev);
+void intel_setup_bios(struct drm_device *dev);
+bool intel_parse_bios(struct drm_device *dev);
/*
* Driver<->VBIOS interaction occurs through scratch bits in