[Intel-gfx] [RFC 15/60] drm/i915/dg1: add hpd interrupt handling
Matthew Auld
matthew.auld at intel.com
Fri Jul 10 11:57:12 UTC 2020
From: Lucas De Marchi <lucas.demarchi at intel.com>
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
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_hotplug.c | 3 +-
drivers/gpu/drm/i915/i915_irq.c | 57 +++++++++++++++++---
drivers/gpu/drm/i915/i915_reg.h | 8 +++
3 files changed, 61 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c
index 3f1d7b804a66..1838e3c87e73 100644
--- a/drivers/gpu/drm/i915/display/intel_hotplug.c
+++ b/drivers/gpu/drm/i915/display/intel_hotplug.c
@@ -95,7 +95,8 @@ enum hpd_pin intel_hpd_pin_default(struct drm_i915_private *dev_priv,
* shold be HPD_PORT_{D,E} rather than {C,D}. Note that this differs
* from the behavior of both TGL+TGP and RKL+CMP.
*/
- if (IS_ROCKETLAKE(dev_priv) && HAS_PCH_TGP(dev_priv))
+ if (IS_DG1(dev_priv) ||
+ (IS_ROCKETLAKE(dev_priv) && HAS_PCH_TGP(dev_priv)))
return HPD_PORT_A + port - PORT_A;
switch (phy) {
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 1fa67700d8f4..e8bdc52c94bb 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -167,6 +167,13 @@ static const u32 hpd_tgp[HPD_NUM_PINS] = {
[HPD_PORT_I] = SDE_TC_HOTPLUG_ICP(PORT_TC6),
};
+static const u32 hpd_dg1_sde[HPD_NUM_PINS] = {
+ [HPD_PORT_A] = SDE_DDI_HOTPLUG_ICP(PHY_A),
+ [HPD_PORT_B] = SDE_DDI_HOTPLUG_ICP(PHY_B),
+ [HPD_PORT_D] = SDE_DDI_HOTPLUG_ICP(PHY_C),
+ [HPD_PORT_E] = SDE_DDI_HOTPLUG_ICP(PHY_D),
+};
+
static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
{
struct i915_hotplug *hpd = &dev_priv->hotplug;
@@ -193,10 +200,13 @@ 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))
+ if (HAS_PCH_DG1(dev_priv))
+ hpd->pch_hpd = hpd_dg1_sde;
+ else if (HAS_PCH_TGP(dev_priv) || HAS_PCH_JSP(dev_priv))
hpd->pch_hpd = hpd_tgp;
else if (HAS_PCH_ICP(dev_priv) || HAS_PCH_MCC(dev_priv))
hpd->pch_hpd = hpd_icp;
@@ -1145,6 +1155,22 @@ static bool tgp_tc_port_hotplug_long_detect(enum hpd_pin pin, u32 val)
}
}
+static bool dg1_ddi_port_hotplug_long_detect(enum hpd_pin pin, u32 val)
+{
+ switch (pin) {
+ case HPD_PORT_A:
+ return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_A);
+ case HPD_PORT_B:
+ return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_B);
+ case HPD_PORT_D:
+ return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_C);
+ case HPD_PORT_E:
+ return val & SHOTPLUG_CTL_DDI_HPD_LONG_DETECT(PORT_D);
+ default:
+ return false;
+ }
+}
+
static bool spt_port_hotplug2_long_detect(enum hpd_pin pin, u32 val)
{
switch (pin) {
@@ -1893,13 +1919,20 @@ 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;
bool (*tc_port_hotplug_long_detect)(enum hpd_pin pin, u32 val);
+ bool (*ddi_port_hotplug_long_detect)(enum hpd_pin pin, u32 val);
- if (HAS_PCH_TGP(dev_priv)) {
+ if (HAS_PCH_DG1(dev_priv)) {
+ ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_DG1;
+ ddi_port_hotplug_long_detect = dg1_ddi_port_hotplug_long_detect;
+ tc_hotplug_trigger = 0;
+ } else if (HAS_PCH_TGP(dev_priv)) {
ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_TGP;
+ ddi_port_hotplug_long_detect = icp_ddi_port_hotplug_long_detect;
tc_hotplug_trigger = pch_iir & SDE_TC_MASK_TGP;
tc_port_hotplug_long_detect = tgp_tc_port_hotplug_long_detect;
} else if (HAS_PCH_JSP(dev_priv)) {
ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_TGP;
+ ddi_port_hotplug_long_detect = icp_ddi_port_hotplug_long_detect;
tc_hotplug_trigger = 0;
} else if (HAS_PCH_MCC(dev_priv)) {
ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_ICP;
@@ -1911,6 +1944,7 @@ static void icp_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
INTEL_PCH_TYPE(dev_priv));
ddi_hotplug_trigger = pch_iir & SDE_DDI_MASK_ICP;
+ ddi_port_hotplug_long_detect = icp_ddi_port_hotplug_long_detect;
tc_hotplug_trigger = pch_iir & SDE_TC_MASK_ICP;
tc_port_hotplug_long_detect = icp_tc_port_hotplug_long_detect;
}
@@ -1924,7 +1958,7 @@ static void icp_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
ddi_hotplug_trigger, dig_hotplug_reg,
dev_priv->hotplug.pch_hpd,
- icp_ddi_port_hotplug_long_detect);
+ ddi_port_hotplug_long_detect);
}
if (tc_hotplug_trigger) {
@@ -3145,6 +3179,13 @@ 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,
+ SDE_DDI_MASK_DG1, 0,
+ DG1_DDI_HPD_ENABLE_MASK, 0);
+}
+
static void gen11_hpd_detection_setup(struct drm_i915_private *dev_priv)
{
u32 hotplug;
@@ -3533,7 +3574,9 @@ 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_hpd_detection_setup(dev_priv, DG1_DDI_HPD_ENABLE_MASK, 0);
+ else if (HAS_PCH_TGP(dev_priv))
icp_hpd_detection_setup(dev_priv, TGP_DDI_HPD_ENABLE_MASK,
TGP_TC_HPD_ENABLE_MASK);
else if (HAS_PCH_JSP(dev_priv))
@@ -4049,7 +4092,9 @@ 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 a423946e0f78..614b2da4e6b6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8230,6 +8230,10 @@ 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)
@@ -8429,6 +8433,10 @@ 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
--
2.26.2
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