[Intel-gfx] [PATCH 1/6] drm/i915/dg1: add hpd interrupt handling
Lucas De Marchi
lucas.demarchi at intel.com
Wed Oct 21 08:20:29 UTC 2020
DG1 has one more combo phy port, no TC and all irq handling goes through
SDE, like for MCC.
v2: Also change intel_hpd_pin_default() to include DG1 mapping
v3, v4: Rebase on hpd refactor
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Anshuman Gupta <anshuman.gupta at intel.com>
Cc: José Roberto de Souza <jose.souza at intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 13 ++++++++-
drivers/gpu/drm/i915/i915_irq.c | 37 ++++++++++++++++++++----
drivers/gpu/drm/i915/i915_reg.h | 8 +++++
3 files changed, 51 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index bb0b9930958f..3a99f209f1e6 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -5066,6 +5066,15 @@ static bool hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
i915->hti_state & HDPORT_PHY_USED_HDMI(phy));
}
+static enum hpd_pin dg1_hpd_pin(struct drm_i915_private *dev_priv,
+ enum port port)
+{
+ if (port >= PORT_D)
+ return HPD_PORT_C + port - PORT_D;
+ else
+ return HPD_PORT_A + port - PORT_A;
+}
+
static enum hpd_pin tgl_hpd_pin(struct drm_i915_private *dev_priv,
enum port port)
{
@@ -5195,7 +5204,9 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
encoder->cloneable = 0;
encoder->pipe_mask = ~0;
- if (IS_ROCKETLAKE(dev_priv))
+ if (IS_DG1(dev_priv))
+ 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)
encoder->hpd_pin = tgl_hpd_pin(dev_priv, port);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b753c77c9a77..b6169fbadb1d 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -152,6 +152,13 @@ static const u32 hpd_icp[HPD_NUM_PINS] = {
[HPD_PORT_TC6] = SDE_TC_HOTPLUG_ICP(PORT_TC6),
};
+static const u32 hpd_sde_dg1[HPD_NUM_PINS] = {
+ [HPD_PORT_A] = SDE_DDI_HOTPLUG_ICP(PORT_A),
+ [HPD_PORT_B] = SDE_DDI_HOTPLUG_ICP(PORT_B),
+ [HPD_PORT_C] = SDE_DDI_HOTPLUG_ICP(PORT_C),
+ [HPD_PORT_D] = SDE_DDI_HOTPLUG_ICP(PORT_D),
+};
+
static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
{
struct i915_hotplug *hpd = &dev_priv->hotplug;
@@ -176,11 +183,14 @@ static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
else
hpd->hpd = hpd_ilk;
- if (!HAS_PCH_SPLIT(dev_priv) || HAS_PCH_NOP(dev_priv))
+ if ((INTEL_PCH_TYPE(dev_priv) < PCH_DG1) &&
+ (!HAS_PCH_SPLIT(dev_priv) || HAS_PCH_NOP(dev_priv)))
return;
- if (HAS_PCH_TGP(dev_priv) || HAS_PCH_JSP(dev_priv) ||
- HAS_PCH_ICP(dev_priv) || HAS_PCH_MCC(dev_priv))
+ if (HAS_PCH_DG1(dev_priv))
+ hpd->pch_hpd = hpd_sde_dg1;
+ else if (HAS_PCH_TGP(dev_priv) || HAS_PCH_JSP(dev_priv) ||
+ HAS_PCH_ICP(dev_priv) || HAS_PCH_MCC(dev_priv))
hpd->pch_hpd = hpd_icp;
else if (HAS_PCH_CNP(dev_priv) || HAS_PCH_SPT(dev_priv))
hpd->pch_hpd = hpd_spt;
@@ -1074,6 +1084,8 @@ static bool icp_ddi_port_hotplug_long_detect(enum hpd_pin pin, u32 val)
return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_B);
case HPD_PORT_C:
return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_C);
+ case HPD_PORT_D:
+ return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_D);
default:
return false;
}
@@ -1864,7 +1876,10 @@ static void icp_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
u32 ddi_hotplug_trigger, tc_hotplug_trigger;
u32 pin_mask = 0, long_mask = 0;
- if (HAS_PCH_TGP(dev_priv)) {
+ if (HAS_PCH_DG1(dev_priv)) {
+ ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_DG1;
+ tc_hotplug_trigger = 0;
+ } else if (HAS_PCH_TGP(dev_priv)) {
ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_TGP;
tc_hotplug_trigger = pch_iir & SDE_TC_MASK_TGP;
} else if (HAS_PCH_JSP(dev_priv)) {
@@ -3252,6 +3267,12 @@ static void jsp_hpd_irq_setup(struct drm_i915_private *dev_priv)
TGP_DDI_HPD_ENABLE_MASK, 0);
}
+static void dg1_hpd_irq_setup(struct drm_i915_private *dev_priv)
+{
+ icp_hpd_irq_setup(dev_priv,
+ DG1_DDI_HPD_ENABLE_MASK, 0);
+}
+
static void gen11_hpd_detection_setup(struct drm_i915_private *dev_priv)
{
u32 hotplug;
@@ -3645,7 +3666,9 @@ static void icp_irq_postinstall(struct drm_i915_private *dev_priv)
gen3_assert_iir_is_zero(&dev_priv->uncore, SDEIIR);
I915_WRITE(SDEIMR, ~mask);
- if (HAS_PCH_TGP(dev_priv)) {
+ if (HAS_PCH_DG1(dev_priv))
+ icp_ddi_hpd_detection_setup(dev_priv, DG1_DDI_HPD_ENABLE_MASK);
+ else if (HAS_PCH_TGP(dev_priv)) {
icp_ddi_hpd_detection_setup(dev_priv, TGP_DDI_HPD_ENABLE_MASK);
icp_tc_hpd_detection_setup(dev_priv, TGP_TC_HPD_ENABLE_MASK);
} else if (HAS_PCH_JSP(dev_priv)) {
@@ -4162,7 +4185,9 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
if (I915_HAS_HOTPLUG(dev_priv))
dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
} else {
- if (HAS_PCH_JSP(dev_priv))
+ if (HAS_PCH_DG1(dev_priv))
+ dev_priv->display.hpd_irq_setup = dg1_hpd_irq_setup;
+ else if (HAS_PCH_JSP(dev_priv))
dev_priv->display.hpd_irq_setup = jsp_hpd_irq_setup;
else if (HAS_PCH_MCC(dev_priv))
dev_priv->display.hpd_irq_setup = mcc_hpd_irq_setup;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6d97e6286c2d..236199891611 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8235,6 +8235,10 @@ enum {
SDE_TC_HOTPLUG_ICP(PORT_TC3) | \
SDE_TC_HOTPLUG_ICP(PORT_TC2) | \
SDE_TC_HOTPLUG_ICP(PORT_TC1))
+#define SDE_DDI_MASK_DG1 (SDE_DDI_HOTPLUG_ICP(PORT_D) | \
+ SDE_DDI_HOTPLUG_ICP(PORT_C) | \
+ SDE_DDI_HOTPLUG_ICP(PORT_B) | \
+ SDE_DDI_HOTPLUG_ICP(PORT_A))
#define SDEISR _MMIO(0xc4000)
#define SDEIMR _MMIO(0xc4004)
@@ -8434,6 +8438,10 @@ enum {
#define TGP_TC_HPD_ENABLE_MASK (ICP_TC_HPD_ENABLE(PORT_TC6) | \
ICP_TC_HPD_ENABLE(PORT_TC5) | \
ICP_TC_HPD_ENABLE_MASK)
+#define DG1_DDI_HPD_ENABLE_MASK (SHOTPLUG_CTL_DDI_HPD_ENABLE(PORT_D) | \
+ SHOTPLUG_CTL_DDI_HPD_ENABLE(PORT_C) | \
+ SHOTPLUG_CTL_DDI_HPD_ENABLE(PORT_B) | \
+ SHOTPLUG_CTL_DDI_HPD_ENABLE(PORT_A))
#define _PCH_DPLL_A 0xc6014
#define _PCH_DPLL_B 0xc6018
--
2.28.0
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