From patchwork Wed Feb 14 11:24:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nemesa Garg X-Patchwork-Id: 13556340 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 C6B99C48BC1 for ; Wed, 14 Feb 2024 11:28:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B0FF10E313; Wed, 14 Feb 2024 11:28:13 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="oBL1WsDl"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id B636210E313; Wed, 14 Feb 2024 11:28:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707910092; x=1739446092; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=3GLw80IAgklsAsJUUbolyi247xdQfuoHo7SWxtlMJqE=; b=oBL1WsDlfHsY77NcF5OqDskeircJU4JoHsAt8y4byGhbVQTfmXMVFLDS yHsYDzHPN8UvWkhxYj7hP+7913WpUJbKMaXC7m4midXEQDUOwVfxCCqve tS/C3Cqzi/tflca1yeGGq/jxcDz2Y99TcYFJ3Dku1tcopyn6qbVWt836B 0TdkDZukuTLSc9Xx8CqAZH3Y42Tk9lOQAuBGi0qH5qErD1W23knON4nDr sC/hksLwGtf8D/HTIKFvMmo8OGV2dNVTBwAwiXNIBfdWA33lgFOfWmucb Ve9fTkmLf+Wp/c1AECbK9m6Cx2Gj4F1FG2mNoT8SCybHTOM9QA8FfAgXe g==; X-IronPort-AV: E=McAfee;i="6600,9927,10982"; a="1826952" X-IronPort-AV: E=Sophos;i="6.06,159,1705392000"; d="scan'208";a="1826952" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Feb 2024 03:28:12 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,159,1705392000"; d="scan'208";a="7828032" Received: from nemesa.iind.intel.com ([10.190.239.22]) by orviesa003.jf.intel.com with ESMTP; 14 Feb 2024 03:28:11 -0800 From: Nemesa Garg To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: Nemesa Garg Subject: [RFC 2/5] drm/i915/display/: Compute the scaler filter coefficients Date: Wed, 14 Feb 2024 16:54:54 +0530 Message-Id: <20240214112457.3734871-3-nemesa.garg@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240214112457.3734871-1-nemesa.garg@intel.com> References: <20240214112457.3734871-1-nemesa.garg@intel.com> MIME-Version: 1.0 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" Scaler coefficient values are based on experiments and vary for different tap value/win size. These values are normalized by taking the sum of all values and then dividing each value with a sum. Signed-off-by: Nemesa Garg --- drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/display/intel_display.c | 3 + .../drm/i915/display/intel_display_types.h | 9 ++ .../drm/i915/display/intel_sharpen_filter.c | 121 ++++++++++++++++++ .../drm/i915/display/intel_sharpen_filter.h | 27 ++++ drivers/gpu/drm/i915/i915_reg.h | 2 + drivers/gpu/drm/xe/Makefile | 1 + 7 files changed, 164 insertions(+) create mode 100644 drivers/gpu/drm/i915/display/intel_sharpen_filter.c create mode 100644 drivers/gpu/drm/i915/display/intel_sharpen_filter.h diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index c13f14edb508..97d1cf705b40 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -305,6 +305,7 @@ i915-y += \ display/intel_pmdemand.o \ display/intel_psr.o \ display/intel_quirks.o \ + display/intel_sharpen_filter.o \ display/intel_sprite.o \ display/intel_sprite_uapi.o \ display/intel_tc.o \ diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 7db0655d8c9e..5a93bbd1fe25 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -2444,6 +2444,9 @@ static int intel_crtc_compute_config(struct intel_atomic_state *state, if (crtc_state->has_pch_encoder) return ilk_fdi_compute_config(crtc, crtc_state); + if (crtc_state->hw.casf_params.strength_changed) + intel_sharpness_scaler_compute_config(crtc_state); + return 0; } diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 01eb6e4e6049..a7a24d177586 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -53,6 +53,7 @@ #include "intel_display_limits.h" #include "intel_display_power.h" #include "intel_dpll_mgr.h" +#include "intel_sharpen_filter.h" #include "intel_wm_types.h" struct drm_printer; @@ -794,6 +795,13 @@ struct intel_scaler { u32 mode; }; +struct intel_sharpen_filter { + struct scaler_filter_coeff coeff[7]; + u32 scaler_coefficient[119]; + bool strength_changed; + u8 win_size; +}; + struct intel_crtc_scaler_state { #define SKL_NUM_SCALERS 2 struct intel_scaler scalers[SKL_NUM_SCALERS]; @@ -1075,6 +1083,7 @@ struct intel_crtc_state { struct drm_property_blob *degamma_lut, *gamma_lut, *ctm; struct drm_display_mode mode, pipe_mode, adjusted_mode; enum drm_scaling_filter scaling_filter; + struct intel_sharpen_filter casf_params; } hw; /* actual state of LUTs */ diff --git a/drivers/gpu/drm/i915/display/intel_sharpen_filter.c b/drivers/gpu/drm/i915/display/intel_sharpen_filter.c new file mode 100644 index 000000000000..366739d9dead --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_sharpen_filter.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2024 Intel Corporation + * + */ + +#include "i915_reg.h" +#include "intel_de.h" +#include "intel_display_types.h" +#include "skl_scaler.h" + +#define MAX_NUM_UNIQUE_COEF_FOR_SHARPNESS_FILTER 7 +#define SCALER_FILTER_NUM_TAPS 7 +#define SCALER_FILTER_NUM_PHASES 17 +#define filter_coeff_0_125 125 +#define filter_coeff_0_25 250 +#define filter_coeff_0_5 500 +#define filter_coeff_1_0 1000 +#define filter_coeff_0_0 0 + +void intel_sharpen_filter_enable(struct intel_crtc_state *crtc_state) +{ + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); + int id = crtc_state->scaler_state.scaler_id; + + intel_de_write_fw(dev_priv, GLK_PS_COEF_INDEX_SET(crtc->pipe, id, 0), + PS_COEF_INDEX_AUTO_INC); + + intel_de_write_fw(dev_priv, GLK_PS_COEF_INDEX_SET(crtc->pipe, id, 1), + PS_COEF_INDEX_AUTO_INC); + + for (int index = 0; index < 60; index++) { + intel_de_write_fw(dev_priv, GLK_PS_COEF_DATA_SET(crtc->pipe, id, 0), + crtc_state->hw.casf_params.scaler_coefficient[index]); + intel_de_write_fw(dev_priv, GLK_PS_COEF_DATA_SET(crtc->pipe, id, 1), + crtc_state->hw.casf_params. scaler_coefficient[index]); + } +} + +static void convert_sharpness_coef_binary(struct scaler_filter_coeff *coeff, + u16 coefficient) +{ + if (coefficient < 25) { + coeff->mantissa = (coefficient * 2048) / 100; + coeff->exp = 3; + } + + else if (coefficient < 50) { + coeff->mantissa = (coefficient * 1024) / 100; + coeff->exp = 2; + } + + else if (coefficient < 100) { + coeff->mantissa = (coefficient * 512) / 100; + coeff->exp = 1; + } else { + coeff->mantissa = (coefficient * 256) / 100; + coeff->exp = 0; + } +} + +static void intel_sharpness_filter_coeff(struct intel_crtc_state *crtc_state) +{ + u16 filtercoeff[MAX_NUM_UNIQUE_COEF_FOR_SHARPNESS_FILTER]; + u16 sumcoeff = 0; + u8 i; + + if (crtc_state->hw.casf_params.win_size == 0) { + filtercoeff[0] = filter_coeff_0_0; + filtercoeff[1] = filter_coeff_0_0; + filtercoeff[2] = filter_coeff_0_5; + filtercoeff[3] = filter_coeff_1_0; + filtercoeff[4] = filter_coeff_0_5; + filtercoeff[5] = filter_coeff_0_0; + filtercoeff[6] = filter_coeff_0_0; + } + + else if (crtc_state->hw.casf_params.win_size == 1) { + filtercoeff[0] = filter_coeff_0_0; + filtercoeff[1] = filter_coeff_0_25; + filtercoeff[2] = filter_coeff_0_5; + filtercoeff[3] = filter_coeff_1_0; + filtercoeff[4] = filter_coeff_0_5; + filtercoeff[5] = filter_coeff_0_25; + filtercoeff[6] = filter_coeff_0_0; + } else { + filtercoeff[0] = filter_coeff_0_125; + filtercoeff[1] = filter_coeff_0_25; + filtercoeff[2] = filter_coeff_0_5; + filtercoeff[3] = filter_coeff_1_0; + filtercoeff[4] = filter_coeff_0_5; + filtercoeff[5] = filter_coeff_0_25; + filtercoeff[6] = filter_coeff_0_125; + } + + for (i = 0; i < MAX_NUM_UNIQUE_COEF_FOR_SHARPNESS_FILTER; i++) + sumcoeff += filtercoeff[i]; + + for (i = 0; i < MAX_NUM_UNIQUE_COEF_FOR_SHARPNESS_FILTER; i++) { + filtercoeff[i] = (filtercoeff[i] * 100 / sumcoeff); + convert_sharpness_coef_binary(&crtc_state->hw.casf_params.coeff[i], + filtercoeff[i]); + } +} + +void intel_sharpness_scaler_compute_config(struct intel_crtc_state *crtc_state) +{ + u16 phase, tapindex, phaseoffset; + u16 *coeff = (u16 *)crtc_state->hw.casf_params.scaler_coefficient; + + intel_sharpness_filter_coeff(crtc_state); + + for (phase = 0; phase < SCALER_FILTER_NUM_PHASES; phase++) { + phaseoffset = SCALER_FILTER_NUM_TAPS * phase; + for (tapindex = 0; tapindex < SCALER_FILTER_NUM_TAPS; tapindex++) { + coeff[phaseoffset + tapindex] = + SHARP_COEFF_TO_REG_FORMAT(crtc_state->hw.casf_params.coeff[tapindex]); + } + } +} diff --git a/drivers/gpu/drm/i915/display/intel_sharpen_filter.h b/drivers/gpu/drm/i915/display/intel_sharpen_filter.h new file mode 100644 index 000000000000..6b668aaedf65 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_sharpen_filter.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2024 Intel Corporation + */ + +#ifndef __INTEL_SHARPEN_FLITER_H__ +#define __INTEL_SHARPEN_FILTER_H__ + +#include + +#define SHARP_COEFF_TO_REG_FORMAT(coefficient) ((u16)(coefficient.sign << 15 | \ + coefficient.exp << 12 | coefficient.mantissa << 3)) + +struct intel_crtc; +struct intel_crtc_state; +struct intel_atomic_state; + +struct scaler_filter_coeff { + u16 sign; + u16 exp; + u16 mantissa; +}; + +void intel_sharpen_filter_enable(struct intel_crtc_state *crtc_state); +void intel_sharpness_scaler_compute_config(struct intel_crtc_state *crtc_state); + +#endif /* __INTEL_SHARPEN_FLITER_H__ */ diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index e00557e1a57f..9d759026add4 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4072,6 +4072,8 @@ #define PS_VERT_INT_INVERT_FIELD REG_BIT(20) #define PS_PROG_SCALE_FACTOR REG_BIT(19) /* tgl+ */ #define PS_PWRUP_PROGRESS REG_BIT(17) +#define PS_BYPASS_ARMING REG_BIT(10) +#define PS_DB_STALL REG_BIT(9) #define PS_V_FILTER_BYPASS REG_BIT(8) #define PS_VADAPT_EN REG_BIT(7) /* skl/bxt */ #define PS_VADAPT_MODE_MASK REG_GENMASK(6, 5) /* skl/bxt */ diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index c531210695db..4148eb015c11 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -269,6 +269,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \ i915-display/intel_psr.o \ i915-display/intel_qp_tables.o \ i915-display/intel_quirks.o \ + i915-display/intel_sharpen_filter.o \ i915-display/intel_snps_phy.o \ i915-display/intel_tc.o \ i915-display/intel_vblank.o \