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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 72D81C433EF for ; Sun, 6 Feb 2022 15:44:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0C87310E1A9; Sun, 6 Feb 2022 15:44:28 +0000 (UTC) Received: from mx1.smtp.larsendata.com (mx1.smtp.larsendata.com [91.221.196.215]) by gabe.freedesktop.org (Postfix) with ESMTPS id CBF9A10E245 for ; Sun, 6 Feb 2022 15:44:24 +0000 (UTC) Received: from mail01.mxhotel.dk (mail01.mxhotel.dk [91.221.196.236]) by mx1.smtp.larsendata.com (Halon) with ESMTPS id cd10382f-8763-11ec-b20b-0050568c148b; Sun, 06 Feb 2022 15:45:25 +0000 (UTC) Received: from saturn.lan (80-162-45-141-cable.dk.customer.tdc.net [80.162.45.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: sam@ravnborg.org) by mail01.mxhotel.dk (Postfix) with ESMTPSA id 3EEDE194BD0; Sun, 6 Feb 2022 16:44:23 +0100 (CET) X-Report-Abuse-To: abuse@mxhotel.dk From: Sam Ravnborg To: dri-devel@lists.freedesktop.org, Douglas Anderson Subject: [PATCH v1 3/9] drm: add drm_atomic_helper_bridge_dsi_input_bus_fmt Date: Sun, 6 Feb 2022 16:43:59 +0100 Message-Id: <20220206154405.1243333-4-sam@ravnborg.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220206154405.1243333-1-sam@ravnborg.org> References: <20220206154405.1243333-1-sam@ravnborg.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Clark , Philip Chen , Jitao Shi , Thomas Zimmermann , Jonas Karlman , Robert Foss , Neil Armstrong , Jernej Skrabec , Andrzej Hajda , Laurent Pinchart , Enric Balletbo i Serra , Sam Ravnborg Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There is a number of bridge drivers that supports a single media bus format for DSI. Add a helper to avoid duplicating the code. Signed-off-by: Sam Ravnborg --- drivers/gpu/drm/drm_atomic_helper.c | 41 +++++++++++++++++++++++++++++ include/drm/drm_atomic_helper.h | 7 +++++ 2 files changed, 48 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index a7a05e1e26bb..94f313dc196f 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -3549,3 +3549,44 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge, return input_fmts; } EXPORT_SYMBOL(drm_atomic_helper_bridge_propagate_bus_fmt); + +/** + * drm_atomic_helper_bridge_dsi_input_bus_fmt - Define one DSI output format + * + * @bridge: bridge control structure + * @bridge_state: new bridge state + * @crtc_state: new CRTC state + * @conn_state: new connector state + * @output_fmt: tested output bus format + * @num_input_fmts: will contain the size of the returned array + * + * This helper is an implementation of the + * &drm_bridge_funcs.atomic_get_input_bus_fmts operation for bridges that supports + * a single DSI media bus format MEDIA_BUS_FMT_RGB888_1X24. + * + * RETURNS + * A format array with one entry containing MEDIA_BUS_FMT_RGB888_1X24, + * or NULL if the allocation failed + */ +u32 * +drm_atomic_helper_bridge_dsi_input_bus_fmt(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + u32 *input_fmts; + + *num_input_fmts = 0; + + input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + + /* This is the DSI-end bus format */ + input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24; + *num_input_fmts = 1; + + return input_fmts; +} diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h index 4045e2507e11..0e81b6f637d6 100644 --- a/include/drm/drm_atomic_helper.h +++ b/include/drm/drm_atomic_helper.h @@ -231,4 +231,11 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge, u32 output_fmt, unsigned int *num_input_fmts); +u32 * +drm_atomic_helper_bridge_dsi_input_bus_fmt(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts); #endif /* DRM_ATOMIC_HELPER_H_ */ -- 2.32.0