From patchwork Thu Nov 10 18:38:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 624163 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 6D50EC433FE for ; Thu, 10 Nov 2022 18:41:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229952AbiKJSlV (ORCPT ); Thu, 10 Nov 2022 13:41:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229586AbiKJSlU (ORCPT ); Thu, 10 Nov 2022 13:41:20 -0500 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2EE319C0B for ; Thu, 10 Nov 2022 10:41:19 -0800 (PST) Received: by mail-pl1-x631.google.com with SMTP id io19so2190212plb.8 for ; Thu, 10 Nov 2022 10:41:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ahKEBxaNtaA33OFl+eyGOGbGztMU8PeqwlZcki2k/x4=; b=VXDFnV+ebX4mCOgAqiqTFsc9TNRLyvjaC6pMK9b2DXGJ70queGWr4YUjYbkdfmtPuf aHYmn/tQl4wPVDj/naszMv3GLsPFs0KiYudNMphEUKAn0ul0xXbnbBTHYvwDMga2t41n BglFNyRI9DaCRYui2QoajHSmEvPYqI2qDV69E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ahKEBxaNtaA33OFl+eyGOGbGztMU8PeqwlZcki2k/x4=; b=qAHxRZEaYgZT5BmurHHIsumDn13Kn3qPIv7Z+aPS/YJO7Y0bkqSzOVuMJPKaE+duzG 1mtiJSi/hm18kBYyAjlmmVBIKg8Q7MeiUqb9t5shSDwvMVd4U9XBMOp4P+ecZBtNvwYF XExhOwmj0x4U3GjYuLYh0nY1+CV8dy1V0b9WuP/Yu3obOhkrUxC/wvcdqAsvrPCT8mSt TNrRMtynp43PQQf2mik+3cYYU/xtoLdXYB1sC+xwp7tlL3UiYkS4hPUZ3GoMfnHV6a1P qR5Uf6wzk/QF0AeqveFdoSFTN7KUe2g+5imTLabwzESWsjwdWsFQAM528viUZXC2bmI6 ls5w== X-Gm-Message-State: ACrzQf1L7YryZiutRn4nfxZtCMnBTpz0jFnb0llxOLV4e4TTqgYeaLNO I6mSJiQdb+cYol6LlUMUdgLssg== X-Google-Smtp-Source: AMsMyM4jzJxuGGkJGSCRfuP5IfIF59hFTS2DbgGth8M6S1QUY/oiBGjXVjKQd4uQNNfGVwv6qZtExA== X-Received: by 2002:a17:903:240a:b0:183:6555:7a89 with SMTP id e10-20020a170903240a00b0018365557a89mr64973897plo.68.1668105679220; Thu, 10 Nov 2022 10:41:19 -0800 (PST) Received: from localhost.localdomain ([2405:201:c00a:a809:b5a4:486a:f07:f67e]) by smtp.gmail.com with ESMTPSA id c2-20020a170903234200b001869efb722csm11635627plh.215.2022.11.10.10.41.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Nov 2022 10:41:18 -0800 (PST) From: Jagan Teki To: Andrzej Hajda , Inki Dae , Marek Szyprowski , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Frieder Schrempf , Fancy Fang , Tim Harvey , Michael Nazzareno Trimarchi , Adam Ford , Neil Armstrong , Robert Foss , Laurent Pinchart , Tommaso Merciai , Marek Vasut Cc: Matteo Lisi , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [PATCH v8 09/14] drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts Date: Fri, 11 Nov 2022 00:08:48 +0530 Message-Id: <20221110183853.3678209-10-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221110183853.3678209-1-jagan@amarulasolutions.com> References: <20221110183853.3678209-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Finding the right input bus format throughout the pipeline is hard so add atomic_get_input_bus_fmts callback and initialize with the proper input format from list of supported output formats. This format can be used in pipeline for negotiating bus format between the DSI-end of this bridge and the other component closer to pipeline components. List of Pixel formats are taken from, AN13573 i.MX 8/RT MIPI DSI/CSI-2, Rev. 0, 21 March 2022 3.7.4 Pixel formats Table 14. DSI pixel packing formats v8: * added pixel formats supported by NXP AN13573 i.MX 8/RT MIPI DSI/CSI-2 v7, v6, v5, v4: * none v3: * include media-bus-format.h v2: * none v1: * new patch Signed-off-by: Jagan Teki Tested-by: Marek Szyprowski --- drivers/gpu/drm/bridge/samsung-dsim.c | 53 +++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 0fe153b29e4f..33e5ae9c865f 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -1321,6 +1322,57 @@ static void samsung_dsim_atomic_post_disable(struct drm_bridge *bridge, pm_runtime_put_sync(dsi->dev); } +/* + * This pixel output formats list referenced from, + * AN13573 i.MX 8/RT MIPI DSI/CSI-2, Rev. 0, 21 March 2022 + * 3.7.4 Pixel formats + * Table 14. DSI pixel packing formats + */ +static const u32 samsung_dsim_pixel_output_fmts[] = { + MEDIA_BUS_FMT_UYVY8_1X16, + MEDIA_BUS_FMT_RGB101010_1X30, + MEDIA_BUS_FMT_RGB121212_1X36, + MEDIA_BUS_FMT_RGB565_1X16, + MEDIA_BUS_FMT_RGB666_1X18, + MEDIA_BUS_FMT_RGB888_1X24, +}; + +static bool samsung_dsim_pixel_output_fmt_supported(u32 fmt) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(samsung_dsim_pixel_output_fmts); i++) { + if (samsung_dsim_pixel_output_fmts[i] == fmt) + return true; + } + + return false; +} + +static u32 * +samsung_dsim_atomic_get_input_bus_fmts(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; + + if (!samsung_dsim_pixel_output_fmt_supported(output_fmt)) + return NULL; + + *num_input_fmts = 1; + + input_fmts = kmalloc(sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + + input_fmts[0] = output_fmt; + + return input_fmts; +} + static int samsung_dsim_atomic_check(struct drm_bridge *bridge, struct drm_bridge_state *bridge_state, struct drm_crtc_state *crtc_state, @@ -1385,6 +1437,7 @@ static const struct drm_bridge_funcs samsung_dsim_bridge_funcs = { .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_get_input_bus_fmts = samsung_dsim_atomic_get_input_bus_fmts, .atomic_check = samsung_dsim_atomic_check, .atomic_pre_enable = samsung_dsim_atomic_pre_enable, .atomic_enable = samsung_dsim_atomic_enable,