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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4C5E3C433F5 for ; Mon, 28 Mar 2022 08:51:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:CC:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=NDtafNvSBu7aljm/yELngv/7x2VTWiZPpFZt+n89XTI=; b=zNdJ+fjtsk8QdS ti/AZviP5KnqYFY+b+nuk4ngbEo1k0KBphal1+u8WLWGznvPjpwp9tgBTGVGrfxJSBz7HYDkQvMhc BTltsGmwzQijprp0cQpe5w7aasGIDectrxn61cGc0ZzondJUd7v4hOlP8PHyLQBxfrgKFo7Zbf7Fq Gy9V5xjQaoHUdLnqAzep3F8Fs+uTq+jHwudPWn5XeiWI6N3gfMjhzDE46tn4HYH4GyM/X+9wXe/nk La8IQIXsr2wQ0xH3xg6jSrPRc+2r/Pn5QwH0YUfv19nbC8HkrCGbIx3lJVbPY9CsgzrIDPZeXuXp9 KJeCHUOlwyeOjI16l4uA==; 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Mon, 28 Mar 2022 16:49:36 +0800 Received: from mtksdccf07 (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 28 Mar 2022 16:49:36 +0800 Message-ID: <736a7f6710f1ea31eff4abcc3d9c3ff79a1f0ddb.camel@mediatek.com> Subject: Re: [PATCH v9 16/22] drm/meditek: dpi: Add matrix_sel helper From: Rex-BC Chen To: Guillaume Ranquet , , , , , , , , , , , , , , , , , CC: , , , , , , , Date: Mon, 28 Mar 2022 16:49:36 +0800 In-Reply-To: <20220327223927.20848-17-granquet@baylibre.com> References: <20220327223927.20848-1-granquet@baylibre.com> <20220327223927.20848-17-granquet@baylibre.com> X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220328_014954_557129_884AE9D9 X-CRM114-Status: GOOD ( 16.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 2022-03-28 at 00:39 +0200, Guillaume Ranquet wrote: > Add a mtk_dpi_matrix_sel() helper to update the DPI_MATRIX_SET > register depending on the color format. > > Signed-off-by: Guillaume Ranquet > --- > drivers/gpu/drm/mediatek/mtk_dpi.c | 21 +++++++++++++++++++++ > 1 file changed, 21 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c > b/drivers/gpu/drm/mediatek/mtk_dpi.c > index 8198d3cf23ac..82f97c687652 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dpi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c > @@ -385,6 +385,25 @@ static void mtk_dpi_config_disable_edge(struct > mtk_dpi *dpi) > mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, > EDGE_SEL_EN); > } > > +static void mtk_dpi_matrix_sel(struct mtk_dpi *dpi, enum > mtk_dpi_out_color_format format) > +{ > + u32 matrix_sel = 0; > + > + switch (format) { > + case MTK_DPI_COLOR_FORMAT_YCBCR_422: > + case MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL: > + case MTK_DPI_COLOR_FORMAT_YCBCR_444: > + case MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL: > + case MTK_DPI_COLOR_FORMAT_XV_YCC: > + if (dpi->mode.hdisplay <= 720) > + matrix_sel = 0x2; > + break; > + default: > + break; > + } > + mtk_dpi_mask(dpi, DPI_MATRIX_SET, matrix_sel, > INT_MATRIX_SEL_MASK); > +} > + > static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, > enum mtk_dpi_out_color_format > format) > { > @@ -392,6 +411,7 @@ static void mtk_dpi_config_color_format(struct > mtk_dpi *dpi, > (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) { > mtk_dpi_config_yuv422_enable(dpi, false); > mtk_dpi_config_csc_enable(dpi, true); > + mtk_dpi_matrix_sel(dpi, format); > if (dpi->conf->swap_input_support) > mtk_dpi_config_swap_input(dpi, false); > mtk_dpi_config_channel_swap(dpi, > MTK_DPI_OUT_CHANNEL_SWAP_BGR); > @@ -399,6 +419,7 @@ static void mtk_dpi_config_color_format(struct > mtk_dpi *dpi, > (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) { > mtk_dpi_config_yuv422_enable(dpi, true); > mtk_dpi_config_csc_enable(dpi, true); > + mtk_dpi_matrix_sel(dpi, format); > if (dpi->conf->swap_input_support) > mtk_dpi_config_swap_input(dpi, true); > mtk_dpi_config_channel_swap(dpi, > MTK_DPI_OUT_CHANNEL_SWAP_RGB); Hello Guillaume, Thanks for your patch. I have one question: Do this setting affect the dpi for previous SoCs? (8183, 8192, or 8186) If we can confirm the original register setting for this offset in 8183/8192/8186, I think we can clarify this question. BRs, Rex _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel