From nobody Tue Dec 16 07:08:39 2025 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 D8F74C001B2 for ; Thu, 9 Nov 2023 07:39:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232695AbjKIHjF (ORCPT ); Thu, 9 Nov 2023 02:39:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45794 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232808AbjKIHiw (ORCPT ); Thu, 9 Nov 2023 02:38:52 -0500 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 348092728 for ; Wed, 8 Nov 2023 23:38:50 -0800 (PST) Received: from [127.0.1.1] (91-158-149-209.elisa-laajakaista.fi [91.158.149.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 329FF1B44; Thu, 9 Nov 2023 08:38:25 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1699515505; bh=ea9sAgDoBLxTb7N3GvFQ0oKnHf7196fJPgOxmwvSZWc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hLtHiFr71+P5vgrZ+dKQf7om6zS0BgGAJQVg9fK3rq1E4HvoTsJTnmRl3qL0TBtHP E2nTZlx12cWoAHnfLpELkmpUtVlXSVypPbWH63rOxsesdUion/OIfwPLMndqK+IyvY a+tsPd2pDcVigeq7xdjQ9dLSUoaZrnM/2xZviThg= From: Tomi Valkeinen Date: Thu, 09 Nov 2023 09:37:59 +0200 Subject: [PATCH v2 06/11] drm/tidss: Check for K2G in in dispc_softreset() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20231109-tidss-probe-v2-6-ac91b5ea35c0@ideasonboard.com> References: <20231109-tidss-probe-v2-0-ac91b5ea35c0@ideasonboard.com> In-Reply-To: <20231109-tidss-probe-v2-0-ac91b5ea35c0@ideasonboard.com> To: Aradhya Bhatia , Devarsh Thakkar , Jyri Sarha , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Laurent Pinchart , Francesco Dolcini , Tomi Valkeinen X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1429; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=ea9sAgDoBLxTb7N3GvFQ0oKnHf7196fJPgOxmwvSZWc=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBlTIx/zx8GTBnJK+j6YOO7FS+lZfIy9XVNj7BaH 60HV9E1MpiJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZUyMfwAKCRD6PaqMvJYe 9aoGEACKfzf+D8s4b0/ya3e1Ml+zOzyDtczeaI4kg4X8rD+yP5JMDDWJijlclGiJd57H5JiFhMH qTJkKVMU0HnA7TtYx6DZlJai9nAH6hcn6IxPk8+LWiDlYe0DbBlT/yl2C2FufIsc+q5X1Fn6O0a An/+loDGcSk+8z9fiDa/AiwwUlK0UxLNguhhheHAFRdBNHiIjvtZTrjji6uqwoQu67H+vgx9OTm C2Y1anUYygx4spYEMezC5rpm784DvRF5FEVBqsauHu4mikOO+c2gl6fXt/4Lfm+ht1S/WT6becM VZoTq4IqqW2tDJqlBbn7gtXOx+NvPxFJ+ja03OI2Ta96J0xaJ2zrVxaj19HYSJOSuUMlZVSSgxR UB5EszdFK+e12/P1mfZc8VrqPJu+SwCwYX6wnGGHUgLNgKUmtWh0HDoI5JlicXNlbS0sooEpDaR qrclD2NJ+tM8dzBcNvX28VqPURvUdOCboQsmZu7e72+Eg2BdLJ+hExUYsRCMPxZzFnT/5DmH+6r d/zLi3aYsejHE0h2ni+Tf77eb8mAKPz4gob/rYqAICVJDLgBfK3je+exd8JhoxjnRWVUnkFVYNM 90QelrNnZphKq6ggT6b4b+56GtC/EMuWNGfRV04ixGV3WkWLCNWf1HbP9uY7+onoIKdtPu/EH/W FM2bYzO6C+3GDBg== X-Developer-Key: i=tomi.valkeinen@ideasonboard.com; a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org K2G doesn't have softreset feature. Instead of having every caller of dispc_softreset() check for K2G, move the check into dispc_softreset(), and make dispc_softreset() return 0 in case of K2G. Reviewed-by: Laurent Pinchart Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/tidss/tidss_dispc.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/ti= dss_dispc.c index 50b475b285d9..c82fd5bc9be4 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc.c +++ b/drivers/gpu/drm/tidss/tidss_dispc.c @@ -2707,6 +2707,10 @@ static int dispc_softreset(struct dispc_device *disp= c) u32 val; int ret; =20 + /* K2G display controller does not support soft reset */ + if (dispc->feat->subrev =3D=3D DISPC_K2G) + return 0; + /* Soft reset */ REG_FLD_MOD(dispc, DSS_SYSCONFIG, 1, 1, 1); /* Wait for reset to complete */ @@ -2829,12 +2833,9 @@ int dispc_init(struct tidss_device *tidss) of_property_read_u32(dispc->dev->of_node, "max-memory-bandwidth", &dispc->memory_bandwidth_limit); =20 - /* K2G display controller does not support soft reset */ - if (feat->subrev !=3D DISPC_K2G) { - r =3D dispc_softreset(dispc); - if (r) - return r; - } + r =3D dispc_softreset(dispc); + if (r) + return r; =20 tidss->dispc =3D dispc; =20 --=20 2.34.1