From patchwork Fri Dec 9 15:23:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 13069845 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 64B13C4167B for ; Fri, 9 Dec 2022 15:29:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230229AbiLIP27 (ORCPT ); Fri, 9 Dec 2022 10:28:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49836 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230139AbiLIP2g (ORCPT ); Fri, 9 Dec 2022 10:28:36 -0500 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35AA5286CD for ; Fri, 9 Dec 2022 07:28:15 -0800 (PST) Received: by mail-pj1-x102b.google.com with SMTP id n65-20020a17090a2cc700b0021bc5ef7a14so5322221pjd.0 for ; Fri, 09 Dec 2022 07:28:15 -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=Ymr+DEOHacJTvc2Uck5JB4sOzfEDxvLbYqSHqNsRapU=; b=lq0Dd3U+vIK/vr5aRMFNeSULQoc0THFbOnL6NRIu3WthVZznvyYe5MqC8+h4jclNzG Ih2u3D58wnAqyN3XQ9hWynCRuxYFrQTpnI0qhLxz3WcAWuKcqIKJsNOJuQkETkPDq5F8 hrl8DJE583MagpI/cQpccpnlZFvYitrsPVIss= 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=Ymr+DEOHacJTvc2Uck5JB4sOzfEDxvLbYqSHqNsRapU=; b=kIDf55LydJsk1YrVxf+va9eWUQSs0mVsnQUJjsKDxBp9g6P18Wbft4TpmXDpVpphoI bKCWAaPrnqJ9tprud+Dyqnm7sOpuD/QSfN4hRZ5OZtNtV0/zb5fTtZX4JIThWA2GhOGq iaAKxwqCx25EmtJBwLhEpmrljuHY8YInXfSn6LUqoS2tHHBPHyzjIV02LWyhSRkcG0Ey RUWa1k55LSNslWRVxxXRctc8SOhNzwhfRItWKhwNB1jTxUE47BURwd8tl0AVq7Gj9cYl V8NsCpMgSo5QWitWVFhvxK5hKIDPiTb1epTgjyRnJXsTDI7IUGSt7oTT9zkaKJ8B68JM 6+TQ== X-Gm-Message-State: ANoB5plQcEqux08sXUyRoxqOPf0ZPIyC9T7oKe1BWI57fYtZGm0g7PXa TRZjRrznudvQqJZFEeRLmxgq7w== X-Google-Smtp-Source: AA0mqf68YgV/o1c4fxAysjrC3qcV0mPVebM+Q1QCWs/JKU+KjkPgVtx3HFMnVPbSd1oBfKXqthDveQ== X-Received: by 2002:a17:902:e806:b0:185:4421:72e5 with SMTP id u6-20020a170902e80600b00185442172e5mr7789428plg.42.1670599690133; Fri, 09 Dec 2022 07:28:10 -0800 (PST) Received: from localhost.localdomain ([2405:201:c00a:a809:6ba1:bbda:c542:ba0b]) by smtp.gmail.com with ESMTPSA id x14-20020a170902ec8e00b00188c5f0f9e9sm1477587plg.199.2022.12.09.07.27.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Dec 2022 07:28:09 -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 v9 13/18] drm: bridge: samsung-dsim: Add atomic_get_input_bus_fmts Date: Fri, 9 Dec 2022 20:53:38 +0530 Message-Id: <20221209152343.180139-14-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221209152343.180139-1-jagan@amarulasolutions.com> References: <20221209152343.180139-1-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 v9: * added MEDIA_BUS_FMT_FIXED * return MEDIA_BUS_FMT_RGB888_1X24 output_fmt if supported output_fmt list is unsupported. * added MEDIA_BUS_FMT_YUYV10_1X20, MEDIA_BUS_FMT_YUYV12_1X24 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 Tested-by: Marek Szyprowski Signed-off-by: Jagan Teki --- drivers/gpu/drm/bridge/samsung-dsim.c | 69 +++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 9203116f1efb..ef0d802d25bf 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 @@ -1348,6 +1349,73 @@ 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_YUYV10_1X20, + MEDIA_BUS_FMT_YUYV12_1X24, + 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, + + MEDIA_BUS_FMT_FIXED, +}; + +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)) + /* + * Some bridge/display drivers are still not able to pass the + * correct format, so handle those pipelines by falling back + * to the default format till the supported formats finalized. + */ + output_fmt = MEDIA_BUS_FMT_RGB888_1X24; + + input_fmts = kmalloc(sizeof(*input_fmts), GFP_KERNEL); + if (!input_fmts) + return NULL; + + switch (output_fmt) { + case MEDIA_BUS_FMT_FIXED: + input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24; + break; + default: + input_fmts[0] = output_fmt; + break; + } + + *num_input_fmts = 1; + + 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, @@ -1396,6 +1464,7 @@ 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,