From: Matt Roper <matthew.d.roper@xxxxxxxxx>
DG2 supports a 5th display output which the hardware refers to as "TC1,"
even though it isn't a Type-C output. This behaves similarly to the TC1
on past platforms with just a couple minor differences:
* DG2's TC1 bit in SDEISR is at bit 25 rather than 24 as it is on
ICP/TGP/ADP.
* DG2 doesn't need the hpd inversion setting that we had to use on DG1
Cc: Swathi Dhanavanthri <swathi.dhanavanthri@xxxxxxxxx>
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_gmbus.c | 16 ++++++++++++++--
drivers/gpu/drm/i915/i915_irq.c | 5 ++++-
drivers/gpu/drm/i915/i915_reg.h | 1 +
3 files changed, 19 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_gmbus.c b/drivers/gpu/drm/i915/display/intel_gmbus.c
index 6ce8c10fe975..2fad03250661 100644
--- a/drivers/gpu/drm/i915/display/intel_gmbus.c
+++ b/drivers/gpu/drm/i915/display/intel_gmbus.c
@@ -98,11 +98,21 @@ static const struct gmbus_pin gmbus_pins_dg1[] = {
[GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
};
+static const struct gmbus_pin gmbus_pins_dg2[] = {
+ [GMBUS_PIN_1_BXT] = { "dpa", GPIOB },
+ [GMBUS_PIN_2_BXT] = { "dpb", GPIOC },
+ [GMBUS_PIN_3_BXT] = { "dpc", GPIOD },
+ [GMBUS_PIN_4_CNP] = { "dpd", GPIOE },
+ [GMBUS_PIN_9_TC1_ICP] = { "tc1", GPIOJ },
+};
+
/* pin is expected to be valid */
static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *dev_priv,
unsigned int pin)
{
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+ if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG2)
+ return &gmbus_pins_dg2[pin];
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
return &gmbus_pins_dg1[pin];
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
return &gmbus_pins_icp[pin];
@@ -123,7 +133,9 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
{
unsigned int size;
- if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
+ if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG2)
+ size = ARRAY_SIZE(gmbus_pins_dg2);
+ else if (INTEL_PCH_TYPE(dev_priv) >= PCH_DG1)
size = ARRAY_SIZE(gmbus_pins_dg1);
else if (INTEL_PCH_TYPE(dev_priv) >= PCH_ICP)
size = ARRAY_SIZE(gmbus_pins_icp);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index fdd568ba4a16..4d81063b128c 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -179,6 +179,7 @@ static const u32 hpd_sde_dg1[HPD_NUM_PINS] = {
[HPD_PORT_B] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_B),
[HPD_PORT_C] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_C),
[HPD_PORT_D] = SDE_DDI_HOTPLUG_ICP(HPD_PORT_D),
+ [HPD_PORT_TC1] = SDE_TC_HOTPLUG_DG2(HPD_PORT_TC1),
};
static void intel_hpd_init_pins(struct drm_i915_private *dev_priv)
@@ -4424,7 +4425,9 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
if (I915_HAS_HOTPLUG(dev_priv))
dev_priv->hotplug_funcs = &i915_hpd_funcs;
} else {
- if (HAS_PCH_DG1(dev_priv))
+ if (HAS_PCH_DG2(dev_priv))
+ dev_priv->hotplug_funcs = &icp_hpd_funcs;
+ else if (HAS_PCH_DG1(dev_priv))
dev_priv->hotplug_funcs = &dg1_hpd_funcs;
else if (DISPLAY_VER(dev_priv) >= 11)
dev_priv->hotplug_funcs = &gen11_hpd_funcs;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4ea1713e6b60..4d12abb2d7ff 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6182,6 +6182,7 @@
/* south display engine interrupt: ICP/TGP */
#define SDE_GMBUS_ICP (1 << 23)
#define SDE_TC_HOTPLUG_ICP(hpd_pin) REG_BIT(24 + _HPD_PIN_TC(hpd_pin))
+#define SDE_TC_HOTPLUG_DG2(hpd_pin) REG_BIT(25 + _HPD_PIN_TC(hpd_pin)) /* sigh */
#define SDE_DDI_HOTPLUG_ICP(hpd_pin) REG_BIT(16 + _HPD_PIN_DDI(hpd_pin))
#define SDE_DDI_HOTPLUG_MASK_ICP (SDE_DDI_HOTPLUG_ICP(HPD_PORT_D) | \
SDE_DDI_HOTPLUG_ICP(HPD_PORT_C) | \
--
2.20.1
