From patchwork Wed Dec 14 12:59:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 13073083 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 3339DC4332F for ; Wed, 14 Dec 2022 13:01:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 251B210E3F1; Wed, 14 Dec 2022 13:01:10 +0000 (UTC) Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by gabe.freedesktop.org (Postfix) with ESMTPS id 76CCA10E3E8 for ; Wed, 14 Dec 2022 13:00:52 +0000 (UTC) Received: by mail-pl1-x633.google.com with SMTP id t2so3263290ply.2 for ; Wed, 14 Dec 2022 05:00:52 -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=GVhftXkOyDrHisXtuBAfFezrQnFr2dvDm7Sl7pD6BIE=; b=kIDUfCKrGdJ5H0JCcr9M2LTV7mdeO+VVcDhpZuaZUyq9+QRh7tKi4Q+QMm6Ps28++r NTNaynC8/VrqkeuPrJWm41gnqeMeNUKLmshYv/ArGEVVWEJNdI4BtmJHzZSRKSUn29Rd CP53wpvatkyAL4QHeOK+g5EqsFC2iSihoNV9o= 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=GVhftXkOyDrHisXtuBAfFezrQnFr2dvDm7Sl7pD6BIE=; b=NZTz+qsjfK+tw/ZWGakX0HhKXbdjWxRqCGGALcvHnvr+W3LwKS2OTTg6VTqV/JYnF4 ctWSn4mg4/R7INxjazhZ6w4iL6BJnFHU+MtrMmqklujWhkKBpZrimnNoiryXHuZFj0kZ q76OYZPxJWDes/4D6mNYpdMgRyzyT7FU90jKKVD3pDo0po68ZmtmzPpW2Iei4QZr2KkP m3ddU+/qF24hinrpumod7+Hq8oxAbXrasGoNVVN7rYYBrlnrQU06KlsJWphsx/GtwAUZ CoyBHLzOOWjc3BTco/VeaPqMF3efq9gAt1RjXvvzAElK4BOSk0WzJOREOnDGq2LdmQ5Z q1jg== X-Gm-Message-State: ANoB5pnn5YLKx/6aAIdHuswOexcVpmPCwj/nazyyUht7pqCcecFTGfTw 0wxxPGLd5LiejQeU6PfejiVBmw== X-Google-Smtp-Source: AA0mqf7kI2zgP7bgEMAGvS5Q4cLMWOfxZyJyVf6dG7VkuwOehH/io5n/bsvuivhMXM1JbFKTq3pibQ== X-Received: by 2002:a17:902:788e:b0:189:efe7:df8d with SMTP id q14-20020a170902788e00b00189efe7df8dmr24006481pll.43.1671022851498; Wed, 14 Dec 2022 05:00:51 -0800 (PST) Received: from localhost.localdomain ([2405:201:c00a:a809:5e03:faf:846e:352d]) by smtp.gmail.com with ESMTPSA id ix17-20020a170902f81100b001895f7c8a71sm1838651plb.97.2022.12.14.05.00.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Dec 2022 05:00:51 -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 Subject: [PATCH v10 11/18] drm: exynos: dsi: Add atomic_get_input_bus_fmts Date: Wed, 14 Dec 2022 18:29:00 +0530 Message-Id: <20221214125907.376148-12-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221214125907.376148-1-jagan@amarulasolutions.com> References: <20221214125907.376148-1-jagan@amarulasolutions.com> MIME-Version: 1.0 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: linux-samsung-soc@vger.kernel.org, Matteo Lisi , dri-devel@lists.freedesktop.org, NXP Linux Team , linux-amarula , linux-arm-kernel@lists.infradead.org, Jagan Teki Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 Tested-by: Marek Szyprowski Signed-off-by: Jagan Teki Reviewed-by: Frieder Schrempf --- Changes for v10: - none Changes for 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 Changes for v8: - added pixel formats supported by NXP AN13573 i.MX 8/RT MIPI DSI/CSI-2 Changes for v7 - v4: - none Changes for v3: - include media-bus-format.h Changes for v2: - none Changes for v1: - new patch drivers/gpu/drm/exynos/exynos_drm_dsi.c | 69 +++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 36820a7b5884..bb3d6a7fa84e 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -1467,6 +1468,73 @@ static void exynos_dsi_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 exynos_dsi_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 exynos_dsi_pixel_output_fmt_supported(u32 fmt) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(exynos_dsi_pixel_output_fmts); i++) { + if (exynos_dsi_pixel_output_fmts[i] == fmt) + return true; + } + + return false; +} + +static u32 * +exynos_dsi_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 (!exynos_dsi_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 exynos_dsi_atomic_check(struct drm_bridge *bridge, struct drm_bridge_state *bridge_state, struct drm_crtc_state *crtc_state, @@ -1515,6 +1583,7 @@ static const struct drm_bridge_funcs exynos_dsi_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 = exynos_dsi_atomic_get_input_bus_fmts, .atomic_check = exynos_dsi_atomic_check, .atomic_pre_enable = exynos_dsi_atomic_pre_enable, .atomic_enable = exynos_dsi_atomic_enable,