diff mbox series

drm/i915/xe2lpd: Update C20 HDMI TMDS algorithm to include tx_misc

Message ID 20241017205444.102979-2-gustavo.sousa@intel.com (mailing list archive)
State New
Headers show
Series drm/i915/xe2lpd: Update C20 HDMI TMDS algorithm to include tx_misc | expand

Commit Message

Gustavo Sousa Oct. 17, 2024, 8:53 p.m. UTC
There has been an update to the Bspec in which we need to set
tx_misc=0x5 field for C20 TX Context programming for HDMI TMDS for
Xe2_LPD and newer. That field is mapped to the bits 7:0 of
SRAM_GENERIC_<A/B>_TX_CNTX_CFG_1, which in turn translates to tx[1] of
our state struct. Update the algorithm to reflect this change.

Bspec: 74489
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
---
 drivers/gpu/drm/i915/display/intel_cx0_phy.c    | 17 ++++++++++++++---
 .../gpu/drm/i915/display/intel_cx0_phy_regs.h   |  2 ++
 2 files changed, 16 insertions(+), 3 deletions(-)

Comments

Saarinen, Jani Oct. 18, 2024, 6 a.m. UTC | #1
Hi, 

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of
> Patchwork
> Sent: Friday, 18 October 2024 2.01
> To: Sousa, Gustavo <gustavo.sousa@intel.com>
> Cc: intel-gfx@lists.freedesktop.org
> Subject: ✗ Fi.CI.BAT: failure for drm/i915/xe2lpd: Update C20 HDMI TMDS
> algorithm to include tx_misc
> 
> Patch Details
> Series:	drm/i915/xe2lpd: Update C20 HDMI TMDS algorithm to include
> tx_misc
> URL:	https://patchwork.freedesktop.org/series/140136/
> State:	failure
> Details:	https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/index.html
> 
> CI Bug Log - changes from CI_DRM_15552 -> Patchwork_140136v1
> 
> 
> Summary
> 
> 
> FAILURE
> 
> Serious unknown changes coming with Patchwork_140136v1 absolutely need
> to be verified manually.
> 
> If you think the reported changes have nothing to do with the changes
> introduced in Patchwork_140136v1, please notify your bug team (I915-ci-
> infra@lists.freedesktop.org) to allow them to document this new failure
> mode, which will reduce false positives in CI.
> 
> External URL: https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/index.html
> 
> 
> Participating hosts (43 -> 42)
> 
> 
> Missing (1): fi-snb-2520m
> 
> 
> Possible new issues
> 
> 
> Here are the unknown changes that may have been introduced in Patchwork_140136v1:
> 
> 
> IGT changes
> 
> 
> Possible regressions
> 
> 
> *	igt@i915_selftest@live@active:
> 
> 	*	fi-glk-j4005: PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/fi-glk-j4005/igt@i915_selftest@live@active.html>  ->
> DMESG-FAIL <https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/fi-glk-j4005/igt@i915_selftest@live@active.html>
Seem known issue but got closed 1,5 months ago: https://gfx-ci.igk.intel.com/cibuglog-ng/issue/14086?query_key=d38d3a2b666aff93008569afe127695ab2dd9418 
I guess we need to re-open that? 

> 
> 
> Known issues
> 
> 
> Here are the changes found in Patchwork_140136v1 that come from known
> issues:
> 
> 
> IGT changes
> 
> 
> Issues hit
> 
> 
> *	igt@i915_selftest@live:
> 
> 	*	bat-arls-1: PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/bat-arls-1/igt@i915_selftest@live.html>  -> DMESG-FAIL
> <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/bat-arls-
> 1/igt@i915_selftest@live.html>  (i915#10262
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10262>  /
> i915#10341 <https://gitlab.freedesktop.org/drm/i915/kernel/-
> /issues/10341>  / i915#12133
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12133> )
> 	*	fi-glk-j4005: PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/fi-glk-j4005/igt@i915_selftest@live.html>  -> DMESG-
> FAIL <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/fi-glk-
> j4005/igt@i915_selftest@live.html>  (i915#12133
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12133> )
> 
> *	igt@i915_selftest@live@gem_migrate:
> 
> 	*	bat-arls-1: PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/bat-arls-1/igt@i915_selftest@live@gem_migrate.html>  -
> > DMESG-WARN <https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/bat-arls-
> 1/igt@i915_selftest@live@gem_migrate.html>  (i915#10341
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10341> )
> 
> *	igt@i915_selftest@live@guc_multi_lrc:
> 
> 	*	bat-arls-1: PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/bat-arls-1/igt@i915_selftest@live@guc_multi_lrc.html>  -
> > DMESG-FAIL <https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/bat-arls-
> 1/igt@i915_selftest@live@guc_multi_lrc.html>  (i915#10262
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10262> ) +10
> other tests dmesg-fail
> 
> 
> Possible fixes
> 
> 
> *	igt@i915_module_load@load:
> 
> 	*	bat-adlp-6: DMESG-WARN <https://intel-gfx-
> ci.01.org/tree/drm-tip/CI_DRM_15552/bat-adlp-
> 6/igt@i915_module_load@load.html>  (i915#12253
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12253> ) -> PASS
> <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/bat-adlp-
> 6/igt@i915_module_load@load.html>
> 
> *	igt@i915_selftest@live:
> 
> 	*	bat-arlh-2: DMESG-FAIL <https://intel-gfx-
> ci.01.org/tree/drm-tip/CI_DRM_15552/bat-arlh-
> 2/igt@i915_selftest@live.html>  (i915#10341
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10341> ) -> PASS
> <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/bat-arlh-
> 2/igt@i915_selftest@live.html>
> 
> *	igt@i915_selftest@live@workarounds:
> 
> 	*	bat-arlh-2: DMESG-FAIL <https://intel-gfx-
> ci.01.org/tree/drm-tip/CI_DRM_15552/bat-arlh-
> 2/igt@i915_selftest@live@workarounds.html>  (i915#9500
> <https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/9500> ) -> PASS
> <https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/bat-arlh-
> 2/igt@i915_selftest@live@workarounds.html>
> 	*	bat-mtlp-6: ABORT <https://intel-gfx-ci.01.org/tree/drm-
> tip/CI_DRM_15552/bat-mtlp-6/igt@i915_selftest@live@workarounds.html>
> (i915#12216 <https://gitlab.freedesktop.org/drm/i915/kernel/-
> /issues/12216> ) -> PASS <https://intel-gfx-ci.01.org/tree/drm-
> tip/Patchwork_140136v1/bat-mtlp-
> 6/igt@i915_selftest@live@workarounds.html>  +1 other test pass
> 
> *	igt@kms_chamelium_edid@hdmi-edid-read:
> 
> 	*	bat-dg2-13: DMESG-WARN <https://intel-gfx-
> ci.01.org/tree/drm-tip/CI_DRM_15552/bat-dg2-
> 13/igt@kms_chamelium_edid@hdmi-edid-read.html>  -> PASS <https://intel-
> gfx-ci.01.org/tree/drm-tip/Patchwork_140136v1/bat-dg2-
> 13/igt@kms_chamelium_edid@hdmi-edid-read.html>
> 
> 
> Build changes
> 
> 
> *	Linux: CI_DRM_15552 -> Patchwork_140136v1
> 
> CI-20190529: 20190529
> CI_DRM_15552: 4a1a4fc678a06046ca0443a2d0d61f2174c56b1d @
> git://anongit.freedesktop.org/gfx-ci/linux
> IGT_8078: 175bddf20141ccad40130719ca46bde5140f4872 @
> https://gitlab.freedesktop.org/drm/igt-gpu-tools.git
> Patchwork_140136v1: 4a1a4fc678a06046ca0443a2d0d61f2174c56b1d @
> git://anongit.freedesktop.org/gfx-ci/linux
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index f73d576fd99e..22184b2d5a11 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -2142,8 +2142,12 @@  static void intel_c10pll_dump_hw_state(struct drm_i915_private *i915,
 			    i + 2, hw_state->pll[i + 2], i + 3, hw_state->pll[i + 3]);
 }
 
-static int intel_c20_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c20pll_state *pll_state)
+static int intel_c20_compute_hdmi_tmds_pll(struct intel_encoder *encoder,
+					   u64 pixel_clock,
+					   struct intel_c20pll_state *pll_state)
 {
+	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+
 	u64 datarate;
 	u64 mpll_tx_clk_div;
 	u64 vco_freq_shift;
@@ -2154,6 +2158,7 @@  static int intel_c20_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c20pll_
 	u64 mpll_fracn_rem;
 	u8  mpllb_ana_freq_vco;
 	u8  mpll_div_multiplier;
+	u16  tx_misc;
 
 	if (pixel_clock < 25175 || pixel_clock > 600000)
 		return -EINVAL;
@@ -2171,6 +2176,11 @@  static int intel_c20_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c20pll_
 	mpll_div_multiplier = min_t(u8, div64_u64((vco_freq * 16 + (datarate >> 1)),
 						  datarate), 255);
 
+	if (DISPLAY_VER(i915) >= 20)
+		tx_misc = 0x5;
+	else
+		tx_misc = 0x0;
+
 	if (vco_freq <= DATARATE_3000000000)
 		mpllb_ana_freq_vco = MPLLB_ANA_FREQ_VCO_3;
 	else if (vco_freq <= DATARATE_3500000000)
@@ -2182,7 +2192,7 @@  static int intel_c20_compute_hdmi_tmds_pll(u64 pixel_clock, struct intel_c20pll_
 
 	pll_state->clock	= pixel_clock;
 	pll_state->tx[0]	= 0xbe88;
-	pll_state->tx[1]	= 0x9800;
+	pll_state->tx[1]	= 0x9800 | C20_PHY_TX_MISC(tx_misc);
 	pll_state->tx[2]	= 0x0000;
 	pll_state->cmn[0]	= 0x0500;
 	pll_state->cmn[1]	= 0x0005;
@@ -2266,7 +2276,8 @@  static int intel_c20pll_calc_state(struct intel_crtc_state *crtc_state,
 
 	/* try computed C20 HDMI tables before using consolidated tables */
 	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
-		if (intel_c20_compute_hdmi_tmds_pll(crtc_state->port_clock,
+		if (intel_c20_compute_hdmi_tmds_pll(encoder,
+						    crtc_state->port_clock,
 						    &crtc_state->dpll_hw_state.cx0pll.c20) == 0)
 			return 0;
 	}
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
index ab3ae110b68f..c1949aa1b909 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h
@@ -280,6 +280,8 @@ 
 #define PHY_C20_B_TX_CNTX_CFG(i915, idx) \
 		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_B_TX_CNTX_CFG : _MTL_C20_B_TX_CNTX_CFG) - (idx))
 #define   C20_PHY_TX_RATE		REG_GENMASK(2, 0)
+#define   C20_PHY_TX_MISC_MASK		REG_GENMASK(7, 0)
+#define   C20_PHY_TX_MISC(val)		REG_FIELD_PREP16(C20_PHY_TX_MISC_MASK, (val))
 
 #define PHY_C20_A_CMN_CNTX_CFG(i915, idx) \
 		((_IS_XE2HPD_C20(i915) ? _XE2HPD_C20_A_CMN_CNTX_CFG : _MTL_C20_A_CMN_CNTX_CFG) - (idx))