Commit 72bad997 authored by Colin Xu's avatar Colin Xu Committed by Zhenyu Wang

drm/i915/gvt: Enable virtual display support for BXT.

Virtual monitor on BXT start from port B.
Unlike SKL/KBL, digital display port connectivity is detected via
GEN8_DE_PORT_ISR so emulate monitor state change by setting it.
Signed-off-by: default avatarColin Xu <colin.xu@intel.com>
Signed-off-by: default avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 47d9d3be
......@@ -171,6 +171,29 @@ static void emulate_monitor_status_change(struct intel_vgpu *vgpu)
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
int pipe;
if (IS_BROXTON(dev_priv)) {
vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) &= ~(BXT_DE_PORT_HP_DDIA |
BXT_DE_PORT_HP_DDIB |
BXT_DE_PORT_HP_DDIC);
if (intel_vgpu_has_monitor_on_port(vgpu, PORT_A)) {
vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |=
BXT_DE_PORT_HP_DDIA;
}
if (intel_vgpu_has_monitor_on_port(vgpu, PORT_B)) {
vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |=
BXT_DE_PORT_HP_DDIB;
}
if (intel_vgpu_has_monitor_on_port(vgpu, PORT_C)) {
vgpu_vreg_t(vgpu, GEN8_DE_PORT_ISR) |=
BXT_DE_PORT_HP_DDIC;
}
return;
}
vgpu_vreg_t(vgpu, SDEISR) &= ~(SDE_PORTB_HOTPLUG_CPT |
SDE_PORTC_HOTPLUG_CPT |
SDE_PORTD_HOTPLUG_CPT);
......
......@@ -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);
......@@ -116,6 +131,9 @@ static int gmbus0_mmio_write(struct intel_vgpu *vgpu,
if (pin_select == 0)
return 0;
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;
......
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