From patchwork Thu Jun 13 08:38:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jayesh Choudhary X-Patchwork-Id: 13696356 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 69B07C27C79 for ; Thu, 13 Jun 2024 08:38:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3C98510E996; Thu, 13 Jun 2024 08:38:50 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=ti.com header.i=@ti.com header.b="qvf10RLS"; dkim-atps=neutral Received: from fllv0015.ext.ti.com (fllv0015.ext.ti.com [198.47.19.141]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3ADF510E0EB for ; Thu, 13 Jun 2024 08:38:43 +0000 (UTC) Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 45D8c8QB023308; Thu, 13 Jun 2024 03:38:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1718267888; bh=BY7OHhQbmNI82hBMi2BWuhYz45KvvtmVf4whs4ZENdk=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=qvf10RLSnFcdwKeYKVzZRExDu9dUzzQ3KYQJpYFBTpQoYt6xpMo2K2jQrbf/38Hv4 byAQXvufKZwco6v39JUkP4DBhaBBgWNpwz44xtjbE4zgfFm1YpZFZuhKqe0CkfpN3T 4bdRVuKjL5k3pOE+JJ2bjAqBcyeumsEsvbQmgdpY= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 45D8c8N6068476 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 13 Jun 2024 03:38:08 -0500 Received: from DFLE107.ent.ti.com (10.64.6.28) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Thu, 13 Jun 2024 03:38:07 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Thu, 13 Jun 2024 03:38:07 -0500 Received: from localhost (jayesh-hp-probook-440-g8-notebook-pc.dhcp.ti.com [172.24.227.55]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 45D8c7f9070256; Thu, 13 Jun 2024 03:38:07 -0500 From: Jayesh Choudhary To: , , , , , , , , , CC: , , , , , , , Subject: [PATCH v5 1/3] drm/bridge: sii902x: Fix mode_valid hook Date: Thu, 13 Jun 2024 14:08:03 +0530 Message-ID: <20240613083805.439337-2-j-choudhary@ti.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240613083805.439337-1-j-choudhary@ti.com> References: <20240613083805.439337-1-j-choudhary@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Currently, mode_valid is defined only in drm_connector_helper_funcs. When the bridge is attached with the 'DRM_BRIDGE_ATTACH_NO_CONNECTOR' flag, the connector is not initialized, and so is the mode_valid hook under connector helper funcs. It also returns MODE_OK for all modes without actually checking the modes. So move the mode_valid hook to drm_bridge_funcs with proper clock checks for maximum and minimum pixel clock supported by the bridge. Signed-off-by: Jayesh Choudhary Reviewed-by: Dmitry Baryshkov Acked-by: Sui Jingfeng Reviewed-by: Aradhya Bhatia --- drivers/gpu/drm/bridge/sii902x.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c index 2fbeda9025bf..6a6055a4ccf9 100644 --- a/drivers/gpu/drm/bridge/sii902x.c +++ b/drivers/gpu/drm/bridge/sii902x.c @@ -163,6 +163,14 @@ #define SII902X_AUDIO_PORT_INDEX 3 +/* + * The maximum resolution supported by the HDMI bridge is 1080p@60Hz + * and 1920x1200 requiring a pixel clock of 165MHz and the minimum + * resolution supported is 480p@60Hz requiring a pixel clock of 25MHz + */ +#define SII902X_MIN_PIXEL_CLOCK_KHZ 25000 +#define SII902X_MAX_PIXEL_CLOCK_KHZ 165000 + struct sii902x { struct i2c_client *i2c; struct regmap *regmap; @@ -310,17 +318,8 @@ static int sii902x_get_modes(struct drm_connector *connector) return num; } -static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - /* TODO: check mode */ - - return MODE_OK; -} - static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { .get_modes = sii902x_get_modes, - .mode_valid = sii902x_mode_valid, }; static void sii902x_bridge_disable(struct drm_bridge *bridge) @@ -504,6 +503,20 @@ static int sii902x_bridge_atomic_check(struct drm_bridge *bridge, return 0; } +static enum drm_mode_status +sii902x_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + if (mode->clock < SII902X_MIN_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_LOW; + + if (mode->clock > SII902X_MAX_PIXEL_CLOCK_KHZ) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + static const struct drm_bridge_funcs sii902x_bridge_funcs = { .attach = sii902x_bridge_attach, .mode_set = sii902x_bridge_mode_set, @@ -516,6 +529,7 @@ static const struct drm_bridge_funcs sii902x_bridge_funcs = { .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_get_input_bus_fmts = sii902x_bridge_atomic_get_input_bus_fmts, .atomic_check = sii902x_bridge_atomic_check, + .mode_valid = sii902x_bridge_mode_valid, }; static int sii902x_mute(struct sii902x *sii902x, bool mute)