We have TGP PCH support for Tigerlake and Rocketlake. Similarly
now TGP PCH can be used with Cometlake CPU.
Changes since V3 :
- Rebased to top drm-tip commit
- dev_priv replaced with i915 for new API
- Enable default Port B,C,D detection for TGP && GEN9_BC
Changes since V2 :
- IS_COMETLAKE replaced with IS_GEN9_BC
- VBT ddc pin remapping added
- Added dedicated HPD pin and DDC pin handling API
Changes since V1 :
- Matched HPD Pin mapping for PORT C and PORT D of CML CPU.
Cc: Matt Roper <matthew.d.ro...@intel.com>
Cc: Jani Nikula <jani.nik...@linux.intel.com>
Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadh...@intel.com>
---
drivers/gpu/drm/i915/display/intel_bios.c | 9 +++++++++
drivers/gpu/drm/i915/display/intel_ddi.c | 7 +++++--
drivers/gpu/drm/i915/display/intel_display.c | 9 ++++++++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 20 ++++++++++++++++++++
drivers/gpu/drm/i915/intel_pch.c | 3 ++-
5 files changed, 44 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c
b/drivers/gpu/drm/i915/display/intel_bios.c
index 987cf509337f..730b7f45e5d4 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1630,6 +1630,12 @@ static const u8 rkl_pch_tgp_ddc_pin_map[] = {
[RKL_DDC_BUS_DDI_E] = GMBUS_PIN_10_TC2_ICP,
};
+static const u8 gen9bc_tgp_ddc_pin_map[] = {
+ [DDC_BUS_DDI_B] = GMBUS_PIN_2_BXT,
+ [DDC_BUS_DDI_C] = GMBUS_PIN_9_TC1_ICP,
+ [DDC_BUS_DDI_D] = GMBUS_PIN_10_TC2_ICP,
+};
+
static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
{
const u8 *ddc_pin_map;
@@ -1640,6 +1646,9 @@ static u8 map_ddc_pin(struct drm_i915_private *dev_priv,
u8 vbt_pin)
} else if (IS_ROCKETLAKE(dev_priv) && INTEL_PCH_TYPE(dev_priv) ==
PCH_TGP) {
ddc_pin_map = rkl_pch_tgp_ddc_pin_map;
n_entries = ARRAY_SIZE(rkl_pch_tgp_ddc_pin_map);
+ } else if (HAS_PCH_TGP(dev_priv) && IS_GEN9_BC(dev_priv)) {
+ ddc_pin_map = gen9bc_tgp_ddc_pin_map;
+ n_entries = ARRAY_SIZE(gen9bc_tgp_ddc_pin_map);
} else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP) {
ddc_pin_map = icp_ddc_pin_map;
n_entries = ARRAY_SIZE(icp_ddc_pin_map);
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
b/drivers/gpu/drm/i915/display/intel_ddi.c
index 3df6913369bc..13f1268e2cff 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -5337,7 +5337,9 @@ static enum hpd_pin dg1_hpd_pin(struct drm_i915_private
*dev_priv,
static enum hpd_pin tgl_hpd_pin(struct drm_i915_private *dev_priv,
enum port port)
{
- if (port >= PORT_TC1)
+ if (IS_GEN9_BC(dev_priv) && port >= PORT_C)
+ return HPD_PORT_TC1 + port - PORT_C;
+ else if (port >= PORT_TC1)
return HPD_PORT_TC1 + port - PORT_TC1;
else
return HPD_PORT_A + port - PORT_A;
@@ -5493,7 +5495,8 @@ void intel_ddi_init(struct drm_i915_private *dev_priv,
enum port port)
encoder->hpd_pin = dg1_hpd_pin(dev_priv, port);
else if (IS_ROCKETLAKE(dev_priv))
encoder->hpd_pin = rkl_hpd_pin(dev_priv, port);
- else if (INTEL_GEN(dev_priv) >= 12)
+ else if (INTEL_GEN(dev_priv) >= 12 || (IS_GEN9_BC(dev_priv) &&
+ HAS_PCH_TGP(dev_priv)))
encoder->hpd_pin = tgl_hpd_pin(dev_priv, port);
else if (IS_JSL_EHL(dev_priv))
encoder->hpd_pin = ehl_hpd_pin(dev_priv, port);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c
b/drivers/gpu/drm/i915/display/intel_display.c
index 0189d379a55e..81c93c49ddef 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -16212,7 +16212,14 @@ static void intel_setup_outputs(struct
drm_i915_private *dev_priv)
/* DDI B, C, D, and F detection is indicated by the SFUSE_STRAP
* register */
- found = intel_de_read(dev_priv, SFUSE_STRAP);
+ if (HAS_PCH_TGP(dev_priv)) {
+ /* W/A due to lack of STRAP config on TGP PCH*/
+ found = (SFUSE_STRAP_DDIB_DETECTED |
+ SFUSE_STRAP_DDIC_DETECTED |
+ SFUSE_STRAP_DDID_DETECTED);
+ } else {
+ found = intel_de_read(dev_priv, SFUSE_STRAP);
+ }
if (found & SFUSE_STRAP_DDIB_DETECTED)
intel_ddi_init(dev_priv, PORT_B);
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index c5959590562b..aa3b4a659f96 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -3130,6 +3130,24 @@ static u8 rkl_port_to_ddc_pin(struct drm_i915_private
*dev_priv, enum port port)
return GMBUS_PIN_1_BXT + phy;
}
+static u8 gen9bc_port_to_ddc_pin(struct drm_i915_private *i915, enum port port)
+{
+ enum phy phy = intel_port_to_phy(i915, port);
+
+ drm_WARN_ON(&i915->drm, port == PORT_A);
+
+ /*
+ * Pin mapping for GEN9 BC depends on which PCH is present. With TGP,
+ * final two outputs use type-c pins, even though they're actually
+ * combo outputs. With CMP, the traditional DDI A-D pins are used for
+ * all outputs.
+ */
+ if (INTEL_PCH_TYPE(i915) >= PCH_TGP && phy >= PHY_C)
+ return GMBUS_PIN_9_TC1_ICP + phy - PHY_C;
+
+ return GMBUS_PIN_1_BXT + phy;
+}
+
static u8 dg1_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port
port)
{
return intel_port_to_phy(dev_priv, port) + 1;
@@ -3176,6 +3194,8 @@ static u8 intel_hdmi_ddc_pin(struct intel_encoder
*encoder)
ddc_pin = dg1_port_to_ddc_pin(dev_priv, port);
else if (IS_ROCKETLAKE(dev_priv))
ddc_pin = rkl_port_to_ddc_pin(dev_priv, port);
+ else if (IS_GEN9_BC(dev_priv) && HAS_PCH_TGP(dev_priv))
+ ddc_pin = gen9bc_port_to_ddc_pin(dev_priv, port);
else if (HAS_PCH_MCC(dev_priv))
ddc_pin = mcc_port_to_ddc_pin(dev_priv, port);
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
diff --git a/drivers/gpu/drm/i915/intel_pch.c b/drivers/gpu/drm/i915/intel_pch.c
index f31c0dabd0cc..c1bc2d032360 100644
--- a/drivers/gpu/drm/i915/intel_pch.c
+++ b/drivers/gpu/drm/i915/intel_pch.c
@@ -121,7 +121,8 @@ intel_pch_type(const struct drm_i915_private *dev_priv,
unsigned short id)
case INTEL_PCH_TGP2_DEVICE_ID_TYPE:
drm_dbg_kms(&dev_priv->drm, "Found Tiger Lake LP PCH\n");
drm_WARN_ON(&dev_priv->drm, !IS_TIGERLAKE(dev_priv) &&
- !IS_ROCKETLAKE(dev_priv));
+ !IS_ROCKETLAKE(dev_priv) &&
+ !IS_GEN9_BC(dev_priv));
return PCH_TGP;
case INTEL_PCH_JSP_DEVICE_ID_TYPE:
case INTEL_PCH_JSP2_DEVICE_ID_TYPE:
--
2.30.0
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