From patchwork Tue May 25 12:14:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 12278653 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A5CD9C2B9F8 for ; Tue, 25 May 2021 12:22:51 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 672F2613F5 for ; Tue, 25 May 2021 12:22:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 672F2613F5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org 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: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Cekze3Ck6hC1M44M8xv3Vs3HlznTCprs82cadXUOFo4=; b=2ikEVNkw9K5nM5 owSuIwbuWffIX93+GT+sfbcQZlR0aIYK5litytEsJVL2xJ26zKlwPjBQVuK7KIdLutcn4P/7eaGaI u0l9hBdlHv5mK0oKEOLLmP5oUeHa38w3LMel7syw6VGACeY15VOc22wAREbYAh6zyZtaz2Pqf426o aq5IJ2CCzmTeymyXQ7XcEXLt+mB0PiIeEWRnPr7AwMD+uRoTQQvUrqwl69SnIHuexK4JIdXttwvMP 7DRC/4xIVmfTBPOTPkJZWHvBgxpWHCU/ik7o3r8yXSr3T00xM5BRLuNsGPkZth5QwCk8mUEFXrZNp 7rOZNN8Oi+Zf/2wtDlAw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1llW50-004zgL-NM; Tue, 25 May 2021 12:22:38 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1llW4o-004zYI-Ih; Tue, 25 May 2021 12:22:28 +0000 X-UUID: e00bfdf9b2f04df280ec674930930c16-20210525 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=VWr97ZQQqjcEa+IhXdJKCXtPdVgQ0l6s7sDu/pUtGH0=; b=O1j6SsC6ResgINaPyCExUwwljCsVs9hDAgZDPTdDUv57o4YY8Tr4bABehQi5DWGCvSuBS/3FoqiKPCBcXxffiYiz4+4PW3XEp0yFTKeFqvjRVXrVyInYsuQWj7Bpb5btHvbyrq//cetlalyF9k2W3SXiasn3Yd6smy1IGr3U6fU=; X-UUID: e00bfdf9b2f04df280ec674930930c16-20210525 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1776573207; Tue, 25 May 2021 05:22:20 -0700 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 25 May 2021 05:14:57 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 25 May 2021 20:14:55 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 25 May 2021 20:14:55 +0800 From: Rex-BC Chen To: , CC: , , , , , Rex-BC Chen , Jitao Shi Subject: [v4,PATCH 1/3] drm/mediatek: dpi dual edge sample mode support Date: Tue, 25 May 2021 20:14:46 +0800 Message-ID: <20210525121448.30075-2-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20210525121448.30075-1-rex-bc.chen@mediatek.com> References: <20210525121448.30075-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210525_052226_664039_27DF8241 X-CRM114-Status: GOOD ( 12.24 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DPI can sample on falling, rising or both edge. When DPI sample the data both rising and falling edge. It can reduce half data io pins. Use num_output_fmts to determine whether it is dual edge mode. Signed-off-by: Jitao Shi Signed-off-by: Rex-BC Chen --- drivers/gpu/drm/mediatek/mtk_dpi.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index bea91c81626e..d3b883c97aaf 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -83,6 +83,7 @@ struct mtk_dpi { struct pinctrl *pinctrl; struct pinctrl_state *pins_gpio; struct pinctrl_state *pins_dpi; + bool ddr_edge_sel; int refcount; }; @@ -122,6 +123,8 @@ struct mtk_dpi_conf { u32 reg_h_fre_con; u32 max_clock_khz; bool edge_sel_en; + const u32 *output_fmts; + u32 num_output_fmts; }; static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask) @@ -381,6 +384,16 @@ static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, } } +static void mtk_dpi_dual_edge(struct mtk_dpi *dpi) +{ + if (dpi->conf->num_output_fmts > 1) { + mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, + DDR_EN | DDR_4PHASE); + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, + dpi->ddr_edge_sel ? EDGE_SEL : 0, EDGE_SEL); + } +} + static void mtk_dpi_power_off(struct mtk_dpi *dpi) { if (WARN_ON(dpi->refcount == 0)) @@ -455,7 +468,8 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, pll_rate = clk_get_rate(dpi->tvd_clk); vm.pixelclock = pll_rate / factor; - clk_set_rate(dpi->pixel_clk, vm.pixelclock); + clk_set_rate(dpi->pixel_clk, + vm.pixelclock * ((dpi->conf->num_output_fmts > 1) ? 2 : 1)); vm.pixelclock = clk_get_rate(dpi->pixel_clk); dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n", @@ -519,6 +533,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, mtk_dpi_config_yc_map(dpi, dpi->yc_map); mtk_dpi_config_color_format(dpi, dpi->color_format); mtk_dpi_config_2n_h_fre(dpi); + mtk_dpi_dual_edge(dpi); mtk_dpi_config_disable_edge(dpi); mtk_dpi_sw_reset(dpi, false);