From patchwork Thu Oct 25 18:36:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Shankar, Uma" X-Patchwork-Id: 10656371 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 039BB13A9 for ; Thu, 25 Oct 2018 18:16:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F0BB82C361 for ; Thu, 25 Oct 2018 18:16:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E50902C37B; Thu, 25 Oct 2018 18:16:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 72DC52C361 for ; Thu, 25 Oct 2018 18:16:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EFD986E369; Thu, 25 Oct 2018 18:16:22 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 71E206E369 for ; Thu, 25 Oct 2018 18:16:16 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Oct 2018 11:16:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,425,1534834800"; d="scan'208";a="274452437" Received: from linuxpresi1-desktop.iind.intel.com ([10.223.25.28]) by fmsmga005.fm.intel.com with ESMTP; 25 Oct 2018 11:16:14 -0700 From: Uma Shankar To: intel-gfx@lists.freedesktop.org Date: Fri, 26 Oct 2018 00:06:22 +0530 Message-Id: <1540492582-2882-3-git-send-email-uma.shankar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1540492582-2882-1-git-send-email-uma.shankar@intel.com> References: <1540492582-2882-1-git-send-email-uma.shankar@intel.com> Subject: [Intel-gfx] [v3 2/2] drm/i915/icl: Enable Plane Input CSC for YUV to RGB Conversion X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ville.syrjala@intel.com, maarten.lankhorst@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Plane input CSC needs to be enabled to convert frambuffers from YUV to RGB. This is needed for bottom 3 planes on ICL, rest of the planes have hardcoded conversion and taken care by the legacy code. This patch defines the co-efficient values for YUV to RGB conversion in BT709 and BT601 formats. It programs the coefficients and enables the plane input csc unit in hardware. v2: Addressed Maarten's and Ville's review comments and added the coefficients in a 2D array instead of independent Macros. v3: Added individual coefficient matrix (9 values) instead of 6 register values as per Maarten's comment. Also addresed a shift issue with B channel coefficient. Signed-off-by: Uma Shankar --- drivers/gpu/drm/i915/intel_color.c | 58 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_display.c | 24 +++++++++++---- drivers/gpu/drm/i915/intel_drv.h | 2 ++ 3 files changed, 78 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c index 5127da2..2f77c8b 100644 --- a/drivers/gpu/drm/i915/intel_color.c +++ b/drivers/gpu/drm/i915/intel_color.c @@ -57,6 +57,15 @@ #define CSC_RGB_TO_YUV_RV_GV 0xbce89ad8 #define CSC_RGB_TO_YUV_BV 0x1e080000 +#define ROFF(x) (((x) & 0xffff) << 16) +#define GOFF(x) (((x) & 0xffff) << 0) +#define BOFF(x) (((x) & 0xffff) << 16) + +/* Preoffset values for YUV to RGB Conversion */ +#define PREOFF_YUV_TO_RGB_HI 0x800 +#define PREOFF_YUV_TO_RGB_ME 0xF00 +#define PREOFF_YUV_TO_RGB_LO 0x800 + /* * Extract the CSC coefficient from a CTM coefficient (in U32.32 fixed point * format). This macro takes the coefficient we want transformed and the @@ -643,6 +652,55 @@ int intel_color_check(struct drm_crtc *crtc, return -EINVAL; } +void icl_program_input_csc_coeff(const struct intel_crtc_state *crtc_state, + const struct intel_plane_state *plane_state) +{ + struct drm_i915_private *dev_priv = + to_i915(plane_state->base.plane->dev); + struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc); + enum pipe pipe = crtc->pipe; + struct intel_plane *intel_plane = + to_intel_plane(plane_state->base.plane); + enum plane_id plane = intel_plane->id; + + static const u16 input_csc_matrix[][9] = { + /* BT.601 full range YCbCr -> full range RGB */ + [DRM_COLOR_YCBCR_BT601] = { + 0x7AF8, 7800, 0x0, + 0x8B28, 7800, 0x9AC0, + 0x0, 7800, 0x7DD8, + }, + /* BT.709 full range YCbCr -> full range RGB */ + [DRM_COLOR_YCBCR_BT709] = { + 0x7C98, 7800, 0x0, + 0x9EF8, 7800, 0xABF8, + 0x0, 0x7800, 0x7ED8, + }, + }; + const u16 *csc = input_csc_matrix[plane_state->base.color_encoding]; + + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 0), ROFF(csc[0]) | + GOFF(csc[1])); + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 1), BOFF(csc[2])); + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 2), ROFF(csc[3]) | + GOFF(csc[4])); + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 3), BOFF(csc[5])); + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 4), ROFF(csc[6]) | + GOFF(csc[7])); + I915_WRITE(PLANE_INPUT_CSC_COEFF_REG(pipe, plane, 5), BOFF(csc[8])); + + I915_WRITE(PLANE_INPUT_CSC_PREOFF_REG(pipe, plane, 0), + PREOFF_YUV_TO_RGB_HI); + I915_WRITE(PLANE_INPUT_CSC_PREOFF_REG(pipe, plane, 1), + PREOFF_YUV_TO_RGB_ME); + I915_WRITE(PLANE_INPUT_CSC_PREOFF_REG(pipe, plane, 2), + PREOFF_YUV_TO_RGB_LO); + + I915_WRITE(PLANE_INPUT_CSC_POSTOFF_REG(pipe, plane, 0), 0x0); + I915_WRITE(PLANE_INPUT_CSC_POSTOFF_REG(pipe, plane, 1), 0x0); + I915_WRITE(PLANE_INPUT_CSC_POSTOFF_REG(pipe, plane, 2), 0x0); +} + void intel_color_init(struct drm_crtc *crtc) { struct drm_i915_private *dev_priv = to_i915(crtc->dev); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index fe045ab..be65419 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3666,6 +3666,8 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state, struct drm_i915_private *dev_priv = to_i915(plane_state->base.plane->dev); const struct drm_framebuffer *fb = plane_state->base.fb; + struct intel_plane *plane = to_intel_plane(plane_state->base.plane); + u32 plane_color_ctl = 0; if (INTEL_GEN(dev_priv) < 11) { @@ -3676,13 +3678,23 @@ u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state, plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state); if (fb->format->is_yuv) { - if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709) - plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709; - else - plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709; + if (!icl_is_hdr_plane(plane)) { + if (plane_state->base.color_encoding == + DRM_COLOR_YCBCR_BT709) + plane_color_ctl |= + PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709; + else + plane_color_ctl |= + PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709; - if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE) - plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE; + if (plane_state->base.color_range == + DRM_COLOR_YCBCR_FULL_RANGE) + plane_color_ctl |= + PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE; + } else { + icl_program_input_csc_coeff(crtc_state, plane_state); + plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE; + } } return plane_color_ctl; diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index db24308..bd9e946 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -2285,6 +2285,8 @@ int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_ int intel_color_check(struct drm_crtc *crtc, struct drm_crtc_state *state); void intel_color_set_csc(struct drm_crtc_state *crtc_state); void intel_color_load_luts(struct drm_crtc_state *crtc_state); +void icl_program_input_csc_coeff(const struct intel_crtc_state *crtc_state, + const struct intel_plane_state *plane_state); /* intel_lspcon.c */ bool lspcon_init(struct intel_digital_port *intel_dig_port);