From patchwork Tue Apr 17 00:40:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandan Uddaraju X-Patchwork-Id: 10344079 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1B2A960542 for ; Tue, 17 Apr 2018 00:41:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0B9E428A18 for ; Tue, 17 Apr 2018 00:41:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 01FCF289C5; Tue, 17 Apr 2018 00:41:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E003A289C5 for ; Tue, 17 Apr 2018 00:40:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751157AbeDQAkr (ORCPT ); Mon, 16 Apr 2018 20:40:47 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:43008 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751059AbeDQAkq (ORCPT ); Mon, 16 Apr 2018 20:40:46 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 42868607E1; Tue, 17 Apr 2018 00:40:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523925646; bh=cbdbYd3+TrfVrPWBsbPbbbL0dY2lYA+5vRbVPYispZY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TDD6NpYe8fgi4PpawbVVh3GEpe5i8t2Z0uupSNlyf8C7rje1WDzlsMDdzSW2Sj6Sl bj0UkxYyqqGD7acU4mqIMhLkRo2+YAsddfdAjS9/Km9nvqoL4ZMbrKW2ULqw6UfHl7 /uMvTacA2992H16EofJGqNtPJA8WrKLi+GssVAfc= Received: from linux-display-lab-03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: chandanu@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 93E0A60F8F; Tue, 17 Apr 2018 00:40:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1523925645; bh=cbdbYd3+TrfVrPWBsbPbbbL0dY2lYA+5vRbVPYispZY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AzCa0r8Wzrhxm18gnROrKbm1x0uOYvju4IYSdharzF4Kg8YAfLOEqF9WrpsmsnjTN zczzxiyROep6tMMg3wd1/8HaVc6R+MPZgbNbwwmMMxFRWlqsZb1sXHKLC4fCX5RB+v J4jVXwqGxtAXViUoL3dDQ1iQF/CBXGNrZ+5zfP9o= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 93E0A60F8F Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=chandanu@codeaurora.org From: Chandan Uddaraju To: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Cc: Chandan Uddaraju , seanpaul@chromium.org, jeykumar@quicinc.com, robdclark@gmail.com, nganji@codeaurora.org, jsanka@codeaurora.org, hoegsberg@google.com, dri-devel@lists.freedesktop.org Subject: [DPU PATCH v2 2/2] drm/msm/dsi: Use one connector for dual DSI mode Date: Mon, 16 Apr 2018 17:40:14 -0700 Message-Id: <1523925614-28337-3-git-send-email-chandanu@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1523925614-28337-1-git-send-email-chandanu@codeaurora.org> References: <1523925614-28337-1-git-send-email-chandanu@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Current DSI driver uses two connectors for dual DSI case even though we only have one panel. Fix this by implementing one connector/bridge for dual DSI use case. Use master DSI controllers to register one connector/bridge. Changes in V2: -Removed Change-Id from the commit text tags. -Remove extra parentheses Signed-off-by: Chandan Uddaraju --- drivers/gpu/drm/msm/dsi/dsi.c | 3 + drivers/gpu/drm/msm/dsi/dsi.h | 1 + drivers/gpu/drm/msm/dsi/dsi_manager.c | 110 ++++++++-------------------------- 3 files changed, 29 insertions(+), 85 deletions(-) diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c index b744bcc..ff8164c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.c +++ b/drivers/gpu/drm/msm/dsi/dsi.c @@ -208,6 +208,9 @@ int msm_dsi_modeset_init(struct msm_dsi *msm_dsi, struct drm_device *dev, goto fail; } + if (!msm_dsi_manager_validate_current_config(msm_dsi->id)) + goto fail; + msm_dsi->encoder = encoder; msm_dsi->bridge = msm_dsi_manager_bridge_init(msm_dsi->id); diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 4131b47..d487d94 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -100,6 +100,7 @@ struct msm_dsi { void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags); int msm_dsi_manager_register(struct msm_dsi *msm_dsi); void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); +bool msm_dsi_manager_validate_current_config(u8 id); /* msm dsi */ static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 8ef1c3d..157df42 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -305,67 +305,6 @@ static void dsi_mgr_connector_destroy(struct drm_connector *connector) kfree(dsi_connector); } -static void dsi_dual_connector_fix_modes(struct drm_connector *connector) -{ - struct drm_display_mode *mode, *m; - - /* Only support left-right mode */ - list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { - mode->clock >>= 1; - mode->hdisplay >>= 1; - mode->hsync_start >>= 1; - mode->hsync_end >>= 1; - mode->htotal >>= 1; - drm_mode_set_name(mode); - } -} - -static int dsi_dual_connector_tile_init( - struct drm_connector *connector, int id) -{ - struct drm_display_mode *mode; - /* Fake topology id */ - char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; - - if (connector->tile_group) { - DBG("Tile property has been initialized"); - return 0; - } - - /* Use the first mode only for now */ - mode = list_first_entry(&connector->probed_modes, - struct drm_display_mode, - head); - if (!mode) - return -EINVAL; - - connector->tile_group = drm_mode_get_tile_group( - connector->dev, topo_id); - if (!connector->tile_group) - connector->tile_group = drm_mode_create_tile_group( - connector->dev, topo_id); - if (!connector->tile_group) { - pr_err("%s: failed to create tile group\n", __func__); - return -ENOMEM; - } - - connector->has_tile = true; - connector->tile_is_single_monitor = true; - - /* mode has been fixed */ - connector->tile_h_size = mode->hdisplay; - connector->tile_v_size = mode->vdisplay; - - /* Only support left-right mode */ - connector->num_h_tile = 2; - connector->num_v_tile = 1; - - connector->tile_v_loc = 0; - connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; - - return 0; -} - static int dsi_mgr_connector_get_modes(struct drm_connector *connector) { int id = dsi_mgr_connector_get_id(connector); @@ -376,31 +315,15 @@ static int dsi_mgr_connector_get_modes(struct drm_connector *connector) if (!panel) return 0; - /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, - * panel should not attach to any connector. - * Only temporarily attach panel to the current connector here, - * to let panel set mode to this connector. + /* + * In dual DSI mode, we have one connector that can be + * attached to the drm_panel. */ drm_panel_attach(panel, connector); num = drm_panel_get_modes(panel); - drm_panel_detach(panel); if (!num) return 0; - if (IS_DUAL_DSI()) { - /* report half resolution to user */ - dsi_dual_connector_fix_modes(connector); - ret = dsi_dual_connector_tile_init(connector, id); - if (ret) - return ret; - ret = drm_mode_connector_set_tile_property(connector); - if (ret) { - pr_err("%s: set tile property failed, %d\n", - __func__, ret); - return ret; - } - } - return num; } @@ -454,8 +377,8 @@ static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) if (ret) goto phy_en_fail; - /* Do nothing with the host if it is DSI 1 in case of dual DSI */ - if (is_dual_dsi && (DSI_1 == id)) + /* Do nothing with the host if it is slave-DSI in case of dual DSI */ + if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) return; ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]); @@ -556,11 +479,11 @@ static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) return; /* - * Do nothing with the host if it is DSI 1 in case of dual DSI. + * Do nothing with the host if it is slave-DSI in case of dual DSI. * It is safe to call dsi_mgr_phy_disable() here because a single PHY * won't be diabled until both PHYs request disable. */ - if (is_dual_dsi && (DSI_1 == id)) + if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) goto disable_phy; if (panel) { @@ -621,7 +544,7 @@ static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, mode->vsync_end, mode->vtotal, mode->type, mode->flags); - if (is_dual_dsi && (DSI_1 == id)) + if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) return; msm_dsi_host_set_display_mode(host, adjusted_mode); @@ -704,6 +627,23 @@ struct drm_connector *msm_dsi_manager_connector_init(u8 id) return connector; } +bool msm_dsi_manager_validate_current_config(u8 id) +{ + bool is_dual_dsi = IS_DUAL_DSI(); + + /* + * For dual DSI, we only have one drm panel. For this + * use case, we register only one bridge/connector. + * Skip bridge/connector initialisation if it is + * slave-DSI for dual DSI configuration. + */ + if (is_dual_dsi && !IS_MASTER_DSI_LINK(id)) { + DBG("Skip bridge registration for slave DSI->id: %d\n", id); + return false; + } + return true; +} + /* initialize bridge */ struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) {