Merge tag 'drm-intel-next-2022-06-22' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

- General driver clean-up (Jani, Ville, Julia)
- DG2 enabling (Anusha, Vandita)
- Fix sparse warnings (Imre, Jani)
- DMC MMIO range checks (Anusha)
- Audio related fixes (Jani)
- Runtime PM fixes (Anshuman)
- PSR fixes (Jouni, Jose)
- Media freq factor and per-gt enhancements (Ashutosh, Dale)
- DSI fixes for ICL+ (Jani)
- Disable DMC flip queue handlers (Imre)
- ADL_P voltage swing updates (Balasubramani)
- Use more the VBT for panel information (Ville, Animesh)
- Fix on Type-C ports with TBT mode (Vivek)
- Improve fastset and allow seamless M/N changes (Ville)
- Accept more fixed modes with VRR/DMRRS panels (Ville)
- FBC fix (Jose)
- Remove noise logs (Luca)
- Disable connector polling for a headless SKU (Jouni)
- Sanitize display underrun reporting (Ville)
- ADL-S display PLL w/a (Ville)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YrNzP2WTf3WBvpvd@intel.com

1 files changed, 101 insertions, 2 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index a171d42a5c5b..fa9ef591b885 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -52,6 +52,10 @@
 
 #define DISPLAY_VER12_DMC_MAX_FW_SIZE	ICL_DMC_MAX_FW_SIZE
 
+#define DG2_DMC_PATH			DMC_PATH(dg2, 2, 06)
+#define DG2_DMC_VERSION_REQUIRED	DMC_VERSION(2, 06)
+MODULE_FIRMWARE(DG2_DMC_PATH);
+
 #define ADLP_DMC_PATH			DMC_PATH(adlp, 2, 16)
 #define ADLP_DMC_VERSION_REQUIRED	DMC_VERSION(2, 16)
 MODULE_FIRMWARE(ADLP_DMC_PATH);
@@ -244,9 +248,14 @@ struct stepping_info {
 	char substepping;
 };
 
+static bool has_dmc_id_fw(struct drm_i915_private *i915, int dmc_id)
+{
+	return i915->dmc.dmc_info[dmc_id].payload;
+}
+
 bool intel_dmc_has_payload(struct drm_i915_private *i915)
 {
-	return i915->dmc.dmc_info[DMC_FW_MAIN].payload;
+	return has_dmc_id_fw(i915, DMC_FW_MAIN);
 }
 
 static const struct stepping_info *
@@ -268,6 +277,85 @@ static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv)
 	intel_de_posting_read(dev_priv, DC_STATE_DEBUG);
 }
 
+static void
+disable_flip_queue_event(struct drm_i915_private *i915,
+			 i915_reg_t ctl_reg, i915_reg_t htp_reg)
+{
+	u32 event_ctl;
+	u32 event_htp;
+
+	event_ctl = intel_de_read(i915, ctl_reg);
+	event_htp = intel_de_read(i915, htp_reg);
+	if (event_ctl != (DMC_EVT_CTL_ENABLE |
+			  DMC_EVT_CTL_RECURRING |
+			  REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK,
+					 DMC_EVT_CTL_TYPE_EDGE_0_1) |
+			  REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK,
+					 DMC_EVT_CTL_EVENT_ID_CLK_MSEC)) ||
+	    !event_htp) {
+		drm_dbg_kms(&i915->drm,
+			    "Unexpected DMC event configuration (control %08x htp %08x)\n",
+			    event_ctl, event_htp);
+		return;
+	}
+
+	intel_de_write(i915, ctl_reg,
+		       REG_FIELD_PREP(DMC_EVT_CTL_TYPE_MASK,
+				      DMC_EVT_CTL_TYPE_EDGE_0_1) |
+		       REG_FIELD_PREP(DMC_EVT_CTL_EVENT_ID_MASK,
+				      DMC_EVT_CTL_EVENT_ID_FALSE));
+	intel_de_write(i915, htp_reg, 0);
+}
+
+static bool
+get_flip_queue_event_regs(struct drm_i915_private *i915, int dmc_id,
+			  i915_reg_t *ctl_reg, i915_reg_t *htp_reg)
+{
+	switch (dmc_id) {
+	case DMC_FW_MAIN:
+		if (DISPLAY_VER(i915) == 12) {
+			*ctl_reg = DMC_EVT_CTL(i915, dmc_id, 3);
+			*htp_reg = DMC_EVT_HTP(i915, dmc_id, 3);
+
+			return true;
+		}
+		break;
+	case DMC_FW_PIPEA ... DMC_FW_PIPED:
+		if (IS_DG2(i915)) {
+			*ctl_reg = DMC_EVT_CTL(i915, dmc_id, 2);
+			*htp_reg = DMC_EVT_HTP(i915, dmc_id, 2);
+
+			return true;
+		}
+		break;
+	}
+
+	return false;
+}
+
+static void
+disable_all_flip_queue_events(struct drm_i915_private *i915)
+{
+	int dmc_id;
+
+	/* TODO: check if the following applies to all D13+ platforms. */
+	if (!IS_DG2(i915) && !IS_TIGERLAKE(i915))
+		return;
+
+	for (dmc_id = 0; dmc_id < DMC_FW_MAX; dmc_id++) {
+		i915_reg_t ctl_reg;
+		i915_reg_t htp_reg;
+
+		if (!has_dmc_id_fw(i915, dmc_id))
+			continue;
+
+		if (!get_flip_queue_event_regs(i915, dmc_id, &ctl_reg, &htp_reg))
+			continue;
+
+		disable_flip_queue_event(i915, ctl_reg, htp_reg);
+	}
+}
+
 /**
  * intel_dmc_load_program() - write the firmware from memory to register.
  * @dev_priv: i915 drm device.
@@ -308,6 +396,13 @@ void intel_dmc_load_program(struct drm_i915_private *dev_priv)
 	dev_priv->dmc.dc_state = 0;
 
 	gen9_set_dc_state_debugmask(dev_priv);
+
+	/*
+	 * Flip queue events need to be disabled before enabling DC5/6.
+	 * i915 doesn't use the flip queue feature, so disable it already
+	 * here.
+	 */
+	disable_all_flip_queue_events(dev_priv);
 }
 
 void assert_dmc_loaded(struct drm_i915_private *i915)
@@ -732,7 +827,11 @@ void intel_dmc_ucode_init(struct drm_i915_private *dev_priv)
 	 */
 	intel_dmc_runtime_pm_get(dev_priv);
 
-	if (IS_ALDERLAKE_P(dev_priv)) {
+	if (IS_DG2(dev_priv)) {
+		dmc->fw_path = DG2_DMC_PATH;
+		dmc->required_version = DG2_DMC_VERSION_REQUIRED;
+		dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;
+	} else if (IS_ALDERLAKE_P(dev_priv)) {
 		dmc->fw_path = ADLP_DMC_PATH;
 		dmc->required_version = ADLP_DMC_VERSION_REQUIRED;
 		dmc->max_fw_size = DISPLAY_VER13_DMC_MAX_FW_SIZE;