From patchwork Wed Feb 9 08:55:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sankeerth Billakanti (QUIC)" X-Patchwork-Id: 12740167 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 A0624C43217 for ; Wed, 9 Feb 2022 11:56:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231244AbiBIL4M (ORCPT ); Wed, 9 Feb 2022 06:56:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231520AbiBILzX (ORCPT ); Wed, 9 Feb 2022 06:55:23 -0500 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5ADAAE00F7E6; Wed, 9 Feb 2022 02:53:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1644404000; x=1675940000; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=XHx2l/vD4N8IpF3Ze4UT7TCVcgCy1aFIim078qCWG8s=; b=ntPwNDnevlFvSwsJi9AlMBKo59dRRnPVaA2hq4zD3NfB3avkr52is6xD J65GRsdr3uHlo7zapprJVNIgHoJYyxHLkjfmFsD46G4R12g94JV0+tidg UtI4CVB5AZZ5VRnLWQKS9au3swAsdkQMC++y/7tFhwdXfIPYfebNSoV1F E=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 09 Feb 2022 00:56:25 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Feb 2022 00:56:24 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Wed, 9 Feb 2022 00:56:23 -0800 Received: from sbillaka-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Wed, 9 Feb 2022 00:56:16 -0800 From: Sankeerth Billakanti To: , , , , , , , , , , , , , , , , CC: Sankeerth Billakanti , , , , , Subject: [PATCH v3 4/4] drm/msm/dp: Add driver support to utilize drm panel Date: Wed, 9 Feb 2022 14:25:32 +0530 Message-ID: <1644396932-17932-5-git-send-email-quic_sbillaka@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1644396932-17932-1-git-send-email-quic_sbillaka@quicinc.com> References: <1644396932-17932-1-git-send-email-quic_sbillaka@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support in the DP driver to utilize the custom eDP panels from drm/panels. An eDP panel is always connected to the platform. So, the eDP connector can be reported as always connected. The display mode will be sourced from the panel. The panel mode will be set after the link training is completed. Signed-off-by: Sankeerth Billakanti --- Changes in v3: None drivers/gpu/drm/msm/dp/dp_display.c | 8 ++++++ drivers/gpu/drm/msm/dp/dp_drm.c | 54 +++++++++++++++++++++++++++++++++---- drivers/gpu/drm/msm/dp/dp_parser.h | 3 +++ 3 files changed, 60 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 7cc4d21..410fda4 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1513,6 +1513,10 @@ int msm_dp_display_enable(struct msm_dp *dp, struct drm_encoder *encoder) return -EINVAL; } + /* handle eDP on */ + if (dp->connector_type == DRM_MODE_CONNECTOR_eDP) + dp_hpd_plug_handle(dp_display, 0); + mutex_lock(&dp_display->event_mutex); /* stop sentinel checking */ @@ -1577,6 +1581,10 @@ int msm_dp_display_disable(struct msm_dp *dp, struct drm_encoder *encoder) dp_display = container_of(dp, struct dp_display_private, dp_display); + /* handle edp off */ + if (dp->connector_type == DRM_MODE_CONNECTOR_eDP) + dp_hpd_unplug_handle(dp_display, 0); + mutex_lock(&dp_display->event_mutex); /* stop sentinel checking */ diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c index d4d360d..12fa8c1 100644 --- a/drivers/gpu/drm/msm/dp/dp_drm.c +++ b/drivers/gpu/drm/msm/dp/dp_drm.c @@ -39,6 +39,10 @@ static enum drm_connector_status dp_connector_detect(struct drm_connector *conn, dp = to_dp_connector(conn)->dp_display; + /* eDP is always connected */ + if (dp->connector_type == DRM_MODE_CONNECTOR_eDP) + return connector_status_connected; + DRM_DEBUG_DP("is_connected = %s\n", (dp->is_connected) ? "true" : "false"); @@ -123,6 +127,35 @@ static enum drm_mode_status dp_connector_mode_valid( return dp_display_validate_mode(dp_disp, mode->clock); } +static int edp_connector_get_modes(struct drm_connector *connector) +{ + struct msm_dp *dp; + + if (!connector) + return 0; + + dp = to_dp_connector(connector)->dp_display; + + return drm_bridge_get_modes(dp->panel_bridge, connector); +} + +static enum drm_mode_status edp_connector_mode_valid( + struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct msm_dp *dp; + + if (!connector) + return 0; + + dp = to_dp_connector(connector)->dp_display; + + if (mode->clock > EDP_MAX_PIXEL_CLK_KHZ) + return MODE_BAD; + + return MODE_OK; +} + static const struct drm_connector_funcs dp_connector_funcs = { .detect = dp_connector_detect, .fill_modes = drm_helper_probe_single_connector_modes, @@ -137,6 +170,12 @@ static const struct drm_connector_helper_funcs dp_connector_helper_funcs = { .mode_valid = dp_connector_mode_valid, }; +static const struct drm_connector_helper_funcs edp_connector_helper_funcs = { + .get_modes = edp_connector_get_modes, + .mode_valid = edp_connector_mode_valid, + +}; + /* connector initialization */ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display) { @@ -160,12 +199,17 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display) if (ret) return ERR_PTR(ret); - drm_connector_helper_add(connector, &dp_connector_helper_funcs); + if (dp_display->connector_type == DRM_MODE_CONNECTOR_eDP) { + drm_connector_helper_add(connector, + &edp_connector_helper_funcs); + } else { + drm_connector_helper_add(connector, &dp_connector_helper_funcs); - /* - * Enable HPD to let hpd event is handled when cable is connected. - */ - connector->polled = DRM_CONNECTOR_POLL_HPD; + /* + * Enable HPD to let hpd event is handled when cable is connected. + */ + connector->polled = DRM_CONNECTOR_POLL_HPD; + } drm_connector_attach_encoder(connector, dp_display->encoder); diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h b/drivers/gpu/drm/msm/dp/dp_parser.h index 3172da0..58c4f27 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.h +++ b/drivers/gpu/drm/msm/dp/dp_parser.h @@ -17,6 +17,9 @@ #define DP_MAX_PIXEL_CLK_KHZ 675000 #define DP_MAX_NUM_DP_LANES 4 +/* Maximum validated clock */ +#define EDP_MAX_PIXEL_CLK_KHZ 285550 + enum dp_pm_type { DP_CORE_PM, DP_CTRL_PM,