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path: root/drivers/gpu/drm/i915/gvt/edid.c
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Diffstat (limited to 'drivers/gpu/drm/i915/gvt/edid.c')
-rw-r--r--drivers/gpu/drm/i915/gvt/edid.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/gvt/edid.c b/drivers/gpu/drm/i915/gvt/edid.c
index f61337632969..4b98539025c5 100644
--- a/drivers/gpu/drm/i915/gvt/edid.c
+++ b/drivers/gpu/drm/i915/gvt/edid.c
@@ -77,6 +77,20 @@ static unsigned char edid_get_byte(struct intel_vgpu *vgpu)
return chr;
}
+static inline int bxt_get_port_from_gmbus0(u32 gmbus0)
+{
+ int port_select = gmbus0 & _GMBUS_PIN_SEL_MASK;
+ int port = -EINVAL;
+
+ if (port_select == 1)
+ port = PORT_B;
+ else if (port_select == 2)
+ port = PORT_C;
+ else if (port_select == 3)
+ port = PORT_D;
+ return port;
+}
+
static inline int get_port_from_gmbus0(u32 gmbus0)
{
int port_select = gmbus0 & _GMBUS_PIN_SEL_MASK;
@@ -105,6 +119,7 @@ static void reset_gmbus_controller(struct intel_vgpu *vgpu)
static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
unsigned int offset, void *p_data, unsigned int bytes)
{
+ struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
int port, pin_select;
memcpy(&vgpu_vreg(vgpu, offset), p_data, bytes);
@@ -116,7 +131,10 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
if (pin_select == 0)
return 0;
- port = get_port_from_gmbus0(pin_select);
+ if (IS_BROXTON(dev_priv))
+ port = bxt_get_port_from_gmbus0(pin_select);
+ else
+ port = get_port_from_gmbus0(pin_select);
if (WARN_ON(port < 0))
return 0;