On Mon, Jan 25, 2021 at 06:07:51AM -0800, Aditya Swarup wrote:
ADL-S requires TC pins to set up ddc for Combo PHY B, C, D and E.
Combo PHY A still uses the old ddc pin mapping.
From VBT, ddc pin info suggests the following mapping:
VBT DRIVER
DDI B->ddc_pin=2 should translate to PORT_D->0x9
DDI C->ddc_pin=3 should translate to PORT_E->0xa
DDI D->ddc_pin=4 should translate to PORT_F->0xb
DDI E->ddc_pin=5 should translate to PORT_G->0xc
Adding pin map to facilitate this translation as we cannot use existing
icl ddc pin map due to conflict with DDI B and DDI C info.
Bspec:20124
v2: Replace IS_ALDERLAKE_S() with HAS_PCH_ADP() as the pin map pairing
depends on the PCH being used rather than the platform.(mdroper)
v3:
- Modify adls_port_to_ddc_pin() to make PHY_A the special case for
check, else return pin mapping based on correct arithmetic with phy
offset. Remove redundant platform checks and use HAS_PCH_ADP() instead
of IS_ALDERLAKE_S() in intel_hdmi_ddc_pin().(mdroper)
Cc: Jani Nikula <[email protected]>
Cc: Ville Syrjälä <[email protected]>
Cc: Imre Deak <[email protected]>
Cc: Matt Roper <[email protected]>
Cc: Lucas De Marchi <[email protected]>
Signed-off-by: Aditya Swarup <[email protected]>
Reviewed-by: Lucas De Marchi <[email protected]>
Lucas De Marchi
---
drivers/gpu/drm/i915/display/intel_bios.c | 13 +++++++++++-
drivers/gpu/drm/i915/display/intel_hdmi.c | 20 ++++++++++++++++++-
drivers/gpu/drm/i915/display/intel_vbt_defs.h | 4 ++++
3 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c
b/drivers/gpu/drm/i915/display/intel_bios.c
index 987cf509337f..e575e584e6d5 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1630,12 +1630,23 @@ static const u8 rkl_pch_tgp_ddc_pin_map[] = {
[RKL_DDC_BUS_DDI_E] = GMBUS_PIN_10_TC2_ICP,
};
+static const u8 adls_ddc_pin_map[] = {
+ [ICL_DDC_BUS_DDI_A] = GMBUS_PIN_1_BXT,
+ [ADLS_DDC_BUS_PORT_TC1] = GMBUS_PIN_9_TC1_ICP,
+ [ADLS_DDC_BUS_PORT_TC2] = GMBUS_PIN_10_TC2_ICP,
+ [ADLS_DDC_BUS_PORT_TC3] = GMBUS_PIN_11_TC3_ICP,
+ [ADLS_DDC_BUS_PORT_TC4] = GMBUS_PIN_12_TC4_ICP,
+};
+
static u8 map_ddc_pin(struct drm_i915_private *dev_priv, u8 vbt_pin)
{
const u8 *ddc_pin_map;
int n_entries;
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1) {
+ if (HAS_PCH_ADP(dev_priv)) {
+ ddc_pin_map = adls_ddc_pin_map;
+ n_entries = ARRAY_SIZE(adls_ddc_pin_map);
+ } else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1) {
return vbt_pin;
} else if (IS_ROCKETLAKE(dev_priv) && INTEL_PCH_TYPE(dev_priv) ==
PCH_TGP) {
ddc_pin_map = rkl_pch_tgp_ddc_pin_map;
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index d5f4b40a8460..66e1ac3887c6 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -3138,6 +3138,22 @@ 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;
}
+static u8 adls_port_to_ddc_pin(struct drm_i915_private *dev_priv, enum port
port)
+{
+ enum phy phy = intel_port_to_phy(dev_priv, port);
+
+ WARN_ON(port == PORT_B || port == PORT_C);
+
+ /*
+ * Pin mapping for ADL-S requires TC pins for all combo phy outputs
+ * except first combo output.
+ */
+ if (phy == PHY_A)
+ return GMBUS_PIN_1_BXT;
+
+ return GMBUS_PIN_9_TC1_ICP + phy - PHY_B;
+}
+
static u8 g4x_port_to_ddc_pin(struct drm_i915_private *dev_priv,
enum port port)
{
@@ -3175,7 +3191,9 @@ static u8 intel_hdmi_ddc_pin(struct intel_encoder
*encoder)
return ddc_pin;
}
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+ if (HAS_PCH_ADP(dev_priv))
+ ddc_pin = adls_port_to_ddc_pin(dev_priv, port);
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
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);
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
index 187ec573de59..6d10fa037751 100644
--- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h
+++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h
@@ -327,6 +327,10 @@ enum vbt_gmbus_ddi {
ICL_DDC_BUS_PORT_4,
TGL_DDC_BUS_PORT_5,
TGL_DDC_BUS_PORT_6,
+ ADLS_DDC_BUS_PORT_TC1 = 0x2,
+ ADLS_DDC_BUS_PORT_TC2,
+ ADLS_DDC_BUS_PORT_TC3,
+ ADLS_DDC_BUS_PORT_TC4
};
#define DP_AUX_A 0x40
--
2.27.0
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