Stepping-specific display behavior shouldn't be tied to MTL as a
platform, but rather specifically to the Xe_LPD+ IP. Future non-MTL
platforms may re-use this IP and will need to follow the exact same
logic and apply the same workarounds. IS_MTL_DISPLAY_STEP() is dropped
in favor of a new macro IS_DISPLAY_IP_STEP() that only checks the
display IP version.
v2:
- Rename macro to IS_DISPLAY_IP_STEP for consistency with the
corresponding GT macro and handle steppings the same way.
v3:
- Drop the automatic "STEP_" pasting.
v4:
- Implement IS_DISPLAY_IP_STEP on top of IS_DISPLAY_IP_RANGE /
IS_DISPLAY_STEP building blocks and make the parameters from/until
instead of begin/fixed. (Jani)
- Fix usage details in comment.
v5:
- Tweak macro comment. (Gustavo)
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
Reviewed-by: Gustavo Sousa <gustavo.sousa@xxxxxxxxx>
---
.../drm/i915/display/intel_display_device.h | 25 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_fbc.c | 3 ++-
drivers/gpu/drm/i915/display/intel_pmdemand.c | 2 +-
drivers/gpu/drm/i915/display/intel_psr.c | 10 ++++----
drivers/gpu/drm/i915/i915_drv.h | 6 ++---
5 files changed, 35 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h b/drivers/gpu/drm/i915/display/intel_display_device.h
index eb630a946343..8198401aa5be 100644
--- a/drivers/gpu/drm/i915/display/intel_display_device.h
+++ b/drivers/gpu/drm/i915/display/intel_display_device.h
@@ -72,6 +72,31 @@ struct drm_printer;
#define OVERLAY_NEEDS_PHYSICAL(i915) (DISPLAY_INFO(i915)->overlay_needs_physical)
#define SUPPORTS_TV(i915) (DISPLAY_INFO(i915)->supports_tv)
+/* Check that device has a display IP version within the specific range. */
+#define IS_DISPLAY_IP_RANGE(__i915, from, until) ( \
+ BUILD_BUG_ON_ZERO((from) < IP_VER(2, 0)) + \
+ (DISPLAY_VER_FULL(__i915) >= (from) && \
+ DISPLAY_VER_FULL(__i915) <= (until)))
+
+/*
+ * Check if a device has a specific IP version as well as a stepping within the
+ * specified range [from, until). The lower bound is inclusive, the upper
+ * bound is exclusive. The most common use-case of this macro is for checking
+ * bounds for workarounds, which usually have a stepping ("from") at which the
+ * hardware issue is first present and another stepping ("until") at which a
+ * hardware fix is present and the software workaround is no longer necessary.
+ * E.g.,
+ *
+ * IS_DISPLAY_IP_STEP(i915, IP_VER(14, 0), STEP_A0, STEP_B2)
+ * IS_DISPLAY_IP_STEP(i915, IP_VER(14, 0), STEP_C0, STEP_FOREVER)
+ *
+ * "STEP_FOREVER" can be passed as "until" for workarounds that have no upper
+ * stepping bound for the specified IP version.
+ */
+#define IS_DISPLAY_IP_STEP(__i915, ipver, from, until) \
+ (IS_DISPLAY_IP_RANGE((__i915), (ipver), (ipver)) && \
+ IS_DISPLAY_STEP((__i915), (from), (until)))
+
struct intel_display_runtime_info {
struct {
u16 ver;
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 25382022cd27..1c6d467cec26 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -50,6 +50,7 @@
#include "i915_vma.h"
#include "intel_cdclk.h"
#include "intel_de.h"
+#include "intel_display_device.h"
#include "intel_display_trace.h"
#include "intel_display_types.h"
#include "intel_fbc.h"
@@ -1100,7 +1101,7 @@ static int intel_fbc_check_plane(struct intel_atomic_state *state,
/* Wa_14016291713 */
if ((IS_DISPLAY_VER(i915, 12, 13) ||
- IS_MTL_DISPLAY_STEP(i915, STEP_A0, STEP_C0)) &&
+ IS_DISPLAY_IP_STEP(i915, IP_VER(14, 0), STEP_A0, STEP_C0)) &&
crtc_state->has_psr) {
plane_state->no_fbc_reason = "PSR1 enabled (Wa_14016291713)";
return 0;
diff --git a/drivers/gpu/drm/i915/display/intel_pmdemand.c b/drivers/gpu/drm/i915/display/intel_pmdemand.c
index f7608d363634..744e332fa2af 100644
--- a/drivers/gpu/drm/i915/display/intel_pmdemand.c
+++ b/drivers/gpu/drm/i915/display/intel_pmdemand.c
@@ -92,7 +92,7 @@ int intel_pmdemand_init(struct drm_i915_private *i915)
&pmdemand_state->base,
&intel_pmdemand_funcs);
- if (IS_MTL_DISPLAY_STEP(i915, STEP_A0, STEP_C0))
+ if (IS_DISPLAY_IP_STEP(i915, IP_VER(14, 0), STEP_A0, STEP_C0))
/* Wa_14016740474 */
intel_de_rmw(i915, XELPD_CHICKEN_DCPR_3, 0, DMD_RSP_TIMEOUT_DISABLE);
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 97d5eef10130..72887c29fb51 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -1360,7 +1360,7 @@ static void wm_optimization_wa(struct intel_dp *intel_dp,
bool set_wa_bit = false;
/* Wa_14015648006 */
- if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
+ if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_A0, STEP_B0) ||
IS_DISPLAY_VER(dev_priv, 11, 13))
set_wa_bit |= crtc_state->wm_level_disabled;
@@ -1447,7 +1447,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
* All supported adlp panels have 1-based X granularity, this may
* cause issues if non-supported panels are used.
*/
- if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+ if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_A0, STEP_B0))
intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(cpu_transcoder), 0,
ADLP_1_BASED_X_GRANULARITY);
else if (IS_ALDERLAKE_P(dev_priv))
@@ -1455,7 +1455,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
ADLP_1_BASED_X_GRANULARITY);
/* Wa_16012604467:adlp,mtl[a0,b0] */
- if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+ if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_A0, STEP_B0))
intel_de_rmw(dev_priv,
MTL_CLKGATE_DIS_TRANS(cpu_transcoder), 0,
MTL_CLKGATE_DIS_TRANS_DMASC_GATING_DIS);
@@ -1613,7 +1613,7 @@ static void intel_psr_disable_locked(struct intel_dp *intel_dp)
if (intel_dp->psr.psr2_enabled) {
/* Wa_16012604467:adlp,mtl[a0,b0] */
- if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
+ if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_A0, STEP_B0))
intel_de_rmw(dev_priv,
MTL_CLKGATE_DIS_TRANS(cpu_transcoder),
MTL_CLKGATE_DIS_TRANS_DMASC_GATING_DIS, 0);
@@ -2087,7 +2087,7 @@ int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
goto skip_sel_fetch_set_loop;
/* Wa_14014971492 */
- if ((IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) ||
+ if ((IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_A0, STEP_B0) ||
IS_ALDERLAKE_P(dev_priv) || IS_TIGERLAKE(dev_priv)) &&
crtc_state->splitter.enable)
pipe_clip.y1 = 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b0894e7de403..f83016da415b 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -437,6 +437,8 @@ static inline struct intel_gt *to_gt(struct drm_i915_private *i915)
(MEDIA_VER(i915) >= (from) && MEDIA_VER(i915) <= (until))
#define DISPLAY_VER(i915) (DISPLAY_RUNTIME_INFO(i915)->ip.ver)
+#define DISPLAY_VER_FULL(i915) IP_VER(DISPLAY_RUNTIME_INFO(i915)->ip.ver, \
+ DISPLAY_RUNTIME_INFO(i915)->ip.rel)
#define IS_DISPLAY_VER(i915, from, until) \
(DISPLAY_VER(i915) >= (from) && DISPLAY_VER(i915) <= (until))
@@ -658,10 +660,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
#define IS_XEHPSDV_GRAPHICS_STEP(__i915, since, until) \
(IS_XEHPSDV(__i915) && IS_GRAPHICS_STEP(__i915, since, until))
-#define IS_MTL_DISPLAY_STEP(__i915, since, until) \
- (IS_METEORLAKE(__i915) && \
- IS_DISPLAY_STEP(__i915, since, until))
-
#define IS_PVC_BD_STEP(__i915, since, until) \
(IS_PONTEVECCHIO(__i915) && \
IS_BASEDIE_STEP(__i915, since, until))
--
2.41.0
