Merge tag 'drm-intel-next-2021-10-04' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

Cross-subsystem Changes:
- fbdev/efifb: Release PCI device's runtime PM ref during FB destr\
oy (Imre)

i915 Core Driver Changes:
- Only access SFC_DONE in media when not fused off for graphics 12 and newer.
- Double Memory latency values from pcode for DG2 (Matt Roper)
- ADL-S PCI ID update (Tejas)
- New DG1 PCI ID (Jose)
- Fix regression with uncore refactoring (Dave)

i915 Display Changes:
- ADL-P display (XE_LPD) fixes and updates (Ankit, Jani, Matt Roper, Anusham, Jose, Imre, Vandita)
- DG2 display fixes (Ankit, Jani)
- Expand PCH_CNP tweaked display workaround to all newer displays (Anshuman)
- General display simplifications and clean-ups (Jani, Swati, Jose, Ville)
- PSR Clean-ups, dropping support for BDW/HSD and enable PSR2 selective fetch by default (Jose, Gwan-gyeong)
- Nuke ORIGIN_GTT (Jose)
- Return proper DPRX link training result (Lee)
- FBC related refactor and fixes (Ville)
- Yet another attempt to solve the fast+narrow vs slow+wide eDP link training (Kai-Heng)
- DP 2.0 preparation work (Jani)
- Silence __iomem sparse warn (Ville)
- Clean up DPLL stuff (Ville)
- Fix various dp/edp max rates (Matt Atwood, Animesh, Jani)
- Remove VBT ddi_port_info caching (Jani)
- DSI driver improvements (Lee)
- HDCP fixes (Juston)
- Associate ACPI connector nodes with connector entries (Heikki)
- Add support for out-of-bound hotplug events (Hans)
- VESA vendor block and drm/i915 MSO use of it (Jani)
- Fixes for bigjoiner (Ville)
- Update memory bandwidth parameters (RK)
- DMC related fixes (Chris, Jose)
- HDR related fixes and improvements (Tejas)
- g4x/vlv/chv CxSR/wm fixes/cleanups (Ville)
- Use BIOS provided value for RKL Audio's HDA link (Kai-Heng)
- Fix the dsc check while selecting min_cdclk (Vandita)
- Split and constify vtable (Dave)
- Add ww context to intel_dpt_pin (Maarten)
- Fix bdb version check (Lukasz)
- DP per-lane drive settings prep work and other DP fixes (Ville)

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

# gpg: Signature made Tue 05 Oct 2021 04:58:16 AEST
# gpg:                using RSA key 6D207068EEDD65091C2CE2A3FA625F640EEB13CA
# gpg: Good signature from "Rodrigo Vivi <rodrigo.vivi@intel.com>" [unknown]
# gpg:                 aka "Rodrigo Vivi <rodrigo.vivi@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C  E2A3 FA62 5F64 0EEB 13CA
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YVtPk6llsxBFiw7W@intel.com

1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_pps.c b/drivers/gpu/drm/i915/display/intel_pps.c
index a36ec4a818ff..e9c679bb1b2e 100644
--- a/drivers/gpu/drm/i915/display/intel_pps.c
+++ b/drivers/gpu/drm/i915/display/intel_pps.c
@@ -9,6 +9,7 @@
 #include "intel_display_types.h"
 #include "intel_dp.h"
 #include "intel_dpll.h"
+#include "intel_lvds.h"
 #include "intel_pps.h"
 
 static void vlv_steal_power_sequencer(struct drm_i915_private *dev_priv,
@@ -1408,3 +1409,61 @@ void intel_pps_setup(struct drm_i915_private *i915)
 	else
 		i915->pps_mmio_base = PPS_BASE;
 }
+
+void assert_pps_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
+{
+	i915_reg_t pp_reg;
+	u32 val;
+	enum pipe panel_pipe = INVALID_PIPE;
+	bool locked = true;
+
+	if (drm_WARN_ON(&dev_priv->drm, HAS_DDI(dev_priv)))
+		return;
+
+	if (HAS_PCH_SPLIT(dev_priv)) {
+		u32 port_sel;
+
+		pp_reg = PP_CONTROL(0);
+		port_sel = intel_de_read(dev_priv, PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
+
+		switch (port_sel) {
+		case PANEL_PORT_SELECT_LVDS:
+			intel_lvds_port_enabled(dev_priv, PCH_LVDS, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPA:
+			g4x_dp_port_enabled(dev_priv, DP_A, PORT_A, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPC:
+			g4x_dp_port_enabled(dev_priv, PCH_DP_C, PORT_C, &panel_pipe);
+			break;
+		case PANEL_PORT_SELECT_DPD:
+			g4x_dp_port_enabled(dev_priv, PCH_DP_D, PORT_D, &panel_pipe);
+			break;
+		default:
+			MISSING_CASE(port_sel);
+			break;
+		}
+	} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
+		/* presumably write lock depends on pipe, not port select */
+		pp_reg = PP_CONTROL(pipe);
+		panel_pipe = pipe;
+	} else {
+		u32 port_sel;
+
+		pp_reg = PP_CONTROL(0);
+		port_sel = intel_de_read(dev_priv, PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
+
+		drm_WARN_ON(&dev_priv->drm,
+			    port_sel != PANEL_PORT_SELECT_LVDS);
+		intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
+	}
+
+	val = intel_de_read(dev_priv, pp_reg);
+	if (!(val & PANEL_POWER_ON) ||
+	    ((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
+		locked = false;
+
+	I915_STATE_WARN(panel_pipe == pipe && locked,
+			"panel assertion failure, pipe %c regs locked\n",
+			pipe_name(pipe));
+}