From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48058C43334 for ; Fri, 1 Jul 2022 04:00:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229379AbiGAEAB (ORCPT ); Fri, 1 Jul 2022 00:00:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234532AbiGAD7A (ORCPT ); Thu, 30 Jun 2022 23:59:00 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83728677FC; Thu, 30 Jun 2022 20:58:58 -0700 (PDT) X-UUID: 329a145a47064f5b866499363a7d31e7-20220701 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.7,REQID:cb9e2510-eeb1-4e98-870e-d3424c8525bd,OB:0,LO B:0,IP:0,URL:5,TC:0,Content:0,EDM:25,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:30 X-CID-META: VersionHash:87442a2,CLOUDID:e8d61e63-0b3f-4b2c-b3a6-ed5c044366a0,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:5,IP:nil,URL:1,File:nil, QS:nil,BEC:nil,COL:0 X-UUID: 329a145a47064f5b866499363a7d31e7-20220701 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2075274232; Fri, 01 Jul 2022 11:58:47 +0800 Received: from mtkmbs11n1.mediatek.inc (172.21.101.186) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Fri, 1 Jul 2022 11:58:47 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.3 via Frontend Transport; Fri, 1 Jul 2022 11:58:47 +0800 From: Bo-Chen Chen To: , , , , , , CC: , , , , , , , , , , , , , , Bo-Chen Chen Subject: [PATCH v15 05/16] drm/mediatek: dpi: Add support for quantization range Date: Fri, 1 Jul 2022 11:58:34 +0800 Message-ID: <20220701035845.16458-6-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220701035845.16458-1-rex-bc.chen@mediatek.com> References: <20220701035845.16458-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For RGB colorimetry, CTA-861 support both limited and full range data when receiving video with RGB color space. We use drm_default_rgb_quant_range() to determine the correct setting. Signed-off-by: Bo-Chen Chen Reviewed-by: CK Hu Reviewed-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_dpi.c | 34 ++++++++++++++++++------------ 1 file changed, 21 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 3473ee18ad97..0855bbdfe4e1 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -238,16 +238,30 @@ static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height) mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, VSIZE_MASK); } -static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi, - struct mtk_dpi_yc_limit *limit) +static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi) { - mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_bottom << Y_LIMINT_BOT, + struct mtk_dpi_yc_limit limit; + + if (drm_default_rgb_quant_range(&dpi->mode) == + HDMI_QUANTIZATION_RANGE_LIMITED) { + limit.y_bottom = 0x10; + limit.y_top = 0xfe0; + limit.c_bottom = 0x10; + limit.c_top = 0xfe0; + } else { + limit.y_bottom = 0; + limit.y_top = 0xfff; + limit.c_bottom = 0; + limit.c_top = 0xfff; + } + + mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_bottom << Y_LIMINT_BOT, Y_LIMINT_BOT_MASK); - mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_top << Y_LIMINT_TOP, + mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_top << Y_LIMINT_TOP, Y_LIMINT_TOP_MASK); - mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_bottom << C_LIMIT_BOT, + mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_bottom << C_LIMIT_BOT, C_LIMIT_BOT_MASK); - mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_top << C_LIMIT_TOP, + mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_top << C_LIMIT_TOP, C_LIMIT_TOP_MASK); } @@ -439,7 +453,6 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi) static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, struct drm_display_mode *mode) { - struct mtk_dpi_yc_limit limit; struct mtk_dpi_polarities dpi_pol; struct mtk_dpi_sync_param hsync; struct mtk_dpi_sync_param vsync_lodd = { 0 }; @@ -474,11 +487,6 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n", pll_rate, vm.pixelclock); - limit.c_bottom = 0x0010; - limit.c_top = 0x0FE0; - limit.y_bottom = 0x0010; - limit.y_top = 0x0FE0; - dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING; dpi_pol.de_pol = MTK_DPI_POLARITY_RISING; dpi_pol.hsync_pol = vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ? @@ -526,7 +534,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, else mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive); - mtk_dpi_config_channel_limit(dpi, &limit); + mtk_dpi_config_channel_limit(dpi); mtk_dpi_config_bit_num(dpi, dpi->bit_num); mtk_dpi_config_channel_swap(dpi, dpi->channel_swap); mtk_dpi_config_yc_map(dpi, dpi->yc_map); -- 2.18.0