From patchwork Fri Feb 24 10:13:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Kahola X-Patchwork-Id: 13151116 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 30B8EC677F1 for ; Fri, 24 Feb 2023 10:19:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 52B6810E8AA; Fri, 24 Feb 2023 10:19:56 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 64FA110E852 for ; Fri, 24 Feb 2023 10:19:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677233991; x=1708769991; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zS1mRsMniCjCqhy0bK5W3WjhFpt/nxLBs3iS5Y65VOA=; b=HIw1qc6b8eRff8FwSml6KDlEU5jvP57XMBRJCkCiRnx7AJrlxZc9ZMUW Til5ileFNUviSjcn6p0TjAua6N9G57dCBVHhxGDS+0xNf8ocPIfu+rFKv plbBTeT1SDUNB0SPp7b/TEwAprDbnNQn58/bK/w5IAKyYt66gtix7BUys pnkxTPpaCThcFBvmLgnFrjTnchnVcs31DUQNRWC/zvm8gn4k/fPOslyJv /DD5GgzirTQfvXfdN54RT0G7z+QITrgMJrsJOR79ssWoob4BPbPzLPzM4 ZNGI4QezcX8BxYisebGs/s+FVQSQlonsG5axUiyoDbfPWyoxt08UR9msx w==; X-IronPort-AV: E=McAfee;i="6500,9779,10630"; a="332129910" X-IronPort-AV: E=Sophos;i="5.97,324,1669104000"; d="scan'208";a="332129910" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Feb 2023 02:19:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10630"; a="672846633" X-IronPort-AV: E=Sophos;i="5.97,324,1669104000"; d="scan'208";a="672846633" Received: from sorvi2.fi.intel.com ([10.237.72.194]) by orsmga002.jf.intel.com with ESMTP; 24 Feb 2023 02:19:32 -0800 From: Mika Kahola To: intel-gfx@lists.freedesktop.org Date: Fri, 24 Feb 2023 12:13:50 +0200 Message-Id: <20230224101356.2390838-17-mika.kahola@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230224101356.2390838-1-mika.kahola@intel.com> References: <20230224101356.2390838-1-mika.kahola@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 16/22] drm/i915/mtl: Readout Thunderbolt HW state X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Readout hw state for Thunderbolt. Signed-off-by: Mika Kahola --- drivers/gpu/drm/i915/display/intel_cx0_phy.c | 27 ++++++++++++++++++++ drivers/gpu/drm/i915/display/intel_cx0_phy.h | 2 +- drivers/gpu/drm/i915/display/intel_ddi.c | 5 +++- 3 files changed, 32 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index e41fce75d5b2..90440dcb6d86 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -2533,6 +2533,33 @@ static void intel_cx0pll_enable(struct intel_encoder *encoder, intel_cx0_phy_transaction_end(encoder, wakeref); } +int intel_mtl_tbt_calc_port_clock(struct intel_encoder *encoder) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + u32 clock; + u32 val = intel_de_read(i915, XELPDP_PORT_CLOCK_CTL(encoder->port)); + + clock = REG_FIELD_GET(XELPDP_DDI_CLOCK_SELECT_MASK, val); + + drm_WARN_ON(&i915->drm, !(val & XELPDP_FORWARD_CLOCK_UNGATE)); + drm_WARN_ON(&i915->drm, !(val & XELPDP_TBT_CLOCK_REQUEST)); + drm_WARN_ON(&i915->drm, !(val & XELPDP_TBT_CLOCK_ACK)); + + switch (clock) { + case XELPDP_DDI_CLOCK_SELECT_TBT_162: + return 162000; + case XELPDP_DDI_CLOCK_SELECT_TBT_270: + return 270000; + case XELPDP_DDI_CLOCK_SELECT_TBT_540: + return 540000; + case XELPDP_DDI_CLOCK_SELECT_TBT_810: + return 810000; + default: + MISSING_CASE(clock); + return 162000; + } +} + static int intel_mtl_tbt_clock_select(struct drm_i915_private *i915, int clock) { switch (clock) { diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.h b/drivers/gpu/drm/i915/display/intel_cx0_phy.h index f8a86da4a3f7..9e115ec619ea 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.h +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.h @@ -53,5 +53,5 @@ int intel_c20_phy_check_hdmi_link_rate(int clock); void intel_cx0_phy_ddi_vswing_sequence(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, u32 level); -int intel_mtl_tbt_readout_hw_state(struct intel_encoder *encoder); +int intel_mtl_tbt_calc_port_clock(struct intel_encoder *encoder); #endif /* __INTEL_CX0_PHY_H__ */ diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 5e940d2a39d2..84a6648c53d9 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3516,8 +3516,11 @@ static void mtl_ddi_get_config(struct intel_encoder *encoder, { struct drm_i915_private *i915 = to_i915(encoder->base.dev); enum phy phy = intel_port_to_phy(i915, encoder->port); + struct intel_digital_port *dig_port = enc_to_dig_port(encoder); - if (intel_is_c10phy(i915, phy)) { + if (intel_tc_port_in_tbt_alt_mode(dig_port)) { + crtc_state->port_clock = intel_mtl_tbt_calc_port_clock(encoder); + } else if (intel_is_c10phy(i915, phy)) { intel_c10mpllb_readout_hw_state(encoder, &crtc_state->cx0pll_state.c10mpllb_state); intel_c10mpllb_dump_hw_state(i915, &crtc_state->cx0pll_state.c10mpllb_state); crtc_state->port_clock = intel_c10mpllb_calc_port_clock(encoder, &crtc_state->cx0pll_state.c10mpllb_state);