drm/i915: fix intel_ddi_get_cdclk_freq for ULT machines
For now, this code is just used by the eDP AUX channel frequency.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 669afca..87c06f9 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1161,6 +1161,8 @@
#define IS_VALLEYVIEW(dev) (INTEL_INFO(dev)->is_valleyview)
#define IS_HASWELL(dev) (INTEL_INFO(dev)->is_haswell)
#define IS_MOBILE(dev) (INTEL_INFO(dev)->is_mobile)
+#define IS_ULT(dev) (IS_HASWELL(dev) && \
+ ((dev)->pci_device & 0xFF00) == 0x0A00)
/*
* The genX designation typically refers to the render engine, so render
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index d706d53..852012b 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1309,6 +1309,8 @@
else if ((I915_READ(LCPLL_CTL) & LCPLL_CLK_FREQ_MASK) ==
LCPLL_CLK_FREQ_450)
return 450;
+ else if (IS_ULT(dev_priv->dev))
+ return 338;
else
return 540;
}