From: Clinton A Taylor <clinton.a.taylor@xxxxxxxxx>
HPD pins are inverted for DG1 platform.
Bspec: 49956
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
Signed-off-by: Clinton A Taylor <clinton.a.taylor@xxxxxxxxx>
Reviewed-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_irq.c | 9 +++++++++
drivers/gpu/drm/i915/i915_reg.h | 4 ++++
2 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index b6169fbadb1d..c2379296ef25 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3269,6 +3269,15 @@ static void jsp_hpd_irq_setup(struct drm_i915_private *dev_priv)
static void dg1_hpd_irq_setup(struct drm_i915_private *dev_priv)
{
+ u32 val;
+
+ val = I915_READ(SOUTH_CHICKEN1);
+ val |= (INVERT_DDIA_HPD |
+ INVERT_DDIB_HPD |
+ INVERT_DDIC_HPD |
+ INVERT_DDID_HPD);
+ I915_WRITE(SOUTH_CHICKEN1, val);
+
icp_hpd_irq_setup(dev_priv,
DG1_DDI_HPD_ENABLE_MASK, 0);
}
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 236199891611..c7ce3d03b588 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8702,6 +8702,10 @@ enum {
#define SOUTH_CHICKEN1 _MMIO(0xc2000)
#define FDIA_PHASE_SYNC_SHIFT_OVR 19
#define FDIA_PHASE_SYNC_SHIFT_EN 18
+#define INVERT_DDID_HPD (1 << 18)
+#define INVERT_DDIC_HPD (1 << 17)
+#define INVERT_DDIB_HPD (1 << 16)
+#define INVERT_DDIA_HPD (1 << 15)
#define FDI_PHASE_SYNC_OVR(pipe) (1 << (FDIA_PHASE_SYNC_SHIFT_OVR - ((pipe) * 2)))
#define FDI_PHASE_SYNC_EN(pipe) (1 << (FDIA_PHASE_SYNC_SHIFT_EN - ((pipe) * 2)))
#define FDI_BC_BIFURCATION_SELECT (1 << 12)
--
2.28.0
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