From patchwork Sat May 19 18:31:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Jernej_=C5=A0krabec?= X-Patchwork-Id: 10414223 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EB61160365 for ; Mon, 21 May 2018 08:29:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCFE828694 for ; Mon, 21 May 2018 08:29:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D12A8286F5; Mon, 21 May 2018 08:29:03 +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 53BF128694 for ; Mon, 21 May 2018 08:29:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5AB426F024; Mon, 21 May 2018 08:21:09 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.siol.net (mailout6.siol.net [213.250.19.133]) by gabe.freedesktop.org (Postfix) with ESMTPS id 073AA6E0D7 for ; Sat, 19 May 2018 18:32:43 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id A0CAC520806; Sat, 19 May 2018 20:32:41 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta10.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta10.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id nel6o52cwvzW; Sat, 19 May 2018 20:32:41 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 16DD4520805; Sat, 19 May 2018 20:32:41 +0200 (CEST) Received: from localhost.localdomain (unknown [194.152.15.144]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id A6980520806; Sat, 19 May 2018 20:32:38 +0200 (CEST) From: Jernej Skrabec To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org Subject: [PATCH 06/15] drm/sun4i: tcon: Add support for tcon-top Date: Sat, 19 May 2018 20:31:18 +0200 Message-Id: <20180519183127.2718-7-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180519183127.2718-1-jernej.skrabec@siol.net> References: <20180519183127.2718-1-jernej.skrabec@siol.net> X-Mailman-Approved-At: Mon, 21 May 2018 08:18:10 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sunxi@googlegroups.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP If SoC has TCON TOP unit, it has to be configured from TCON, since it has all information needed. Additionally, if it is TCON TV, it must also enable bus gate inside TCON TOP unit. Add support for such TCONs. Signed-off-by: Jernej Skrabec --- drivers/gpu/drm/sun4i/sun4i_tcon.c | 28 ++++++++++++++++++++++++++++ drivers/gpu/drm/sun4i/sun4i_tcon.h | 8 ++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 08747fc3ee71..e0c562ce1c22 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -688,6 +688,16 @@ static int sun4i_tcon_init_clocks(struct device *dev, dev_err(dev, "Couldn't get the TCON bus clock\n"); return PTR_ERR(tcon->clk); } + + if (tcon->quirks->needs_tcon_top && tcon->quirks->has_channel_1) { + tcon->top_clk = devm_clk_get(dev, "tcon-top"); + if (IS_ERR(tcon->top_clk)) { + dev_err(dev, "Couldn't get the TCON TOP bus clock\n"); + return PTR_ERR(tcon->top_clk); + } + clk_prepare_enable(tcon->top_clk); + } + clk_prepare_enable(tcon->clk); if (tcon->quirks->has_channel_0) { @@ -712,6 +722,7 @@ static int sun4i_tcon_init_clocks(struct device *dev, static void sun4i_tcon_free_clocks(struct sun4i_tcon *tcon) { clk_disable_unprepare(tcon->clk); + clk_disable_unprepare(tcon->top_clk); } static int sun4i_tcon_init_irq(struct device *dev, @@ -980,6 +991,23 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master, tcon->id = engine->id; tcon->quirks = of_device_get_match_data(dev); + if (tcon->quirks->needs_tcon_top) { + struct device_node *np; + + np = of_parse_phandle(dev->of_node, "allwinner,tcon-top", 0); + if (np) { + struct platform_device *pdev; + + pdev = of_find_device_by_node(np); + if (pdev) + tcon->tcon_top = platform_get_drvdata(pdev); + of_node_put(np); + + if (!tcon->tcon_top) + return -EPROBE_DEFER; + } + } + tcon->lcd_rst = devm_reset_control_get(dev, "lcd"); if (IS_ERR(tcon->lcd_rst)) { dev_err(dev, "Couldn't get our reset line\n"); diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h index f6a071cd5a6f..26be0d317a38 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.h +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h @@ -20,6 +20,8 @@ #include #include +#include "sun8i_tcon_top.h" + #define SUN4I_TCON_GCTL_REG 0x0 #define SUN4I_TCON_GCTL_TCON_ENABLE BIT(31) #define SUN4I_TCON_GCTL_IOMAP_MASK BIT(0) @@ -224,6 +226,7 @@ struct sun4i_tcon_quirks { bool needs_de_be_mux; /* sun6i needs mux to select backend */ bool needs_edp_reset; /* a80 edp reset needed for tcon0 access */ bool supports_lvds; /* Does the TCON support an LVDS output? */ + bool needs_tcon_top; /* TCON TOP holds additional muxing configuration */ /* callback to handle tcon muxing options */ int (*set_mux)(struct sun4i_tcon *, const struct drm_encoder *); @@ -249,6 +252,9 @@ struct sun4i_tcon { u8 dclk_max_div; u8 dclk_min_div; + /* TCON TOP clock */ + struct clk *top_clk; + /* Reset control */ struct reset_control *lcd_rst; struct reset_control *lvds_rst; @@ -263,6 +269,8 @@ struct sun4i_tcon { int id; + struct sun8i_tcon_top *tcon_top; + /* TCON list management */ struct list_head list; };