From patchwork Mon Jul 11 12:56:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinod Polimera X-Patchwork-Id: 12913715 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 EAFC0CCA483 for ; Mon, 11 Jul 2022 12:57:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232218AbiGKM5t (ORCPT ); Mon, 11 Jul 2022 08:57:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232204AbiGKM5m (ORCPT ); Mon, 11 Jul 2022 08:57:42 -0400 Received: from alexa-out.qualcomm.com (alexa-out.qualcomm.com [129.46.98.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A85B52FFD; Mon, 11 Jul 2022 05:57:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1657544259; x=1689080259; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=KJEqjiyJCjcTLZ25oWrA2VIRC1Sd75b2tLdI9i17zxI=; b=kU6alYF/RN1h0yUYTrMc6afl3tnn7CoGnr4m3GMo/SoXuwo/69GY6HIV inIoLhvXOdz0BjPWNXMk5+6ddWBzetR50KaHuh3fkBhxNBP4ycL0+A5ke VIdegDeCAa/mIfuhgIkyI+ghXq6dOo9q2dTYPU6YQlv7kbi0HoR1J97DS s=; Received: from ironmsg-lv-alpha.qualcomm.com ([10.47.202.13]) by alexa-out.qualcomm.com with ESMTP; 11 Jul 2022 05:57:38 -0700 X-QCInternal: smtphost Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by ironmsg-lv-alpha.qualcomm.com with ESMTP/TLS/AES256-SHA; 11 Jul 2022 05:57:37 -0700 X-QCInternal: smtphost Received: from vpolimer-linux.qualcomm.com ([10.204.67.235]) by ironmsg02-blr.qualcomm.com with ESMTP; 11 Jul 2022 18:27:08 +0530 Received: by vpolimer-linux.qualcomm.com (Postfix, from userid 463814) id D06C73E45; Mon, 11 Jul 2022 18:27:06 +0530 (IST) From: Vinod Polimera To: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org Cc: Vinod Polimera , linux-kernel@vger.kernel.org, robdclark@gmail.com, dianders@chromium.org, swboyd@chromium.org, quic_kalyant@quicinc.com, dmitry.baryshkov@linaro.org, quic_khsieh@quicinc.com, quic_vproddut@quicinc.com, bjorn.andersson@linaro.org, quic_aravindh@quicinc.com, quic_abhinavk@quicinc.com, quic_sbillaka@quicinc.com Subject: [PATCH v6 02/10] drm: add helper functions to retrieve old and new crtc Date: Mon, 11 Jul 2022 18:26:56 +0530 Message-Id: <1657544224-10680-3-git-send-email-quic_vpolimer@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1657544224-10680-1-git-send-email-quic_vpolimer@quicinc.com> References: <1657544224-10680-1-git-send-email-quic_vpolimer@quicinc.com> Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add new helper functions, drm_atomic_get_old_crtc_for_encoder and drm_atomic_get_new_crtc_for_encoder to retrieve the corresponding crtc for the encoder. Signed-off-by: Sankeerth Billakanti Signed-off-by: Vinod Polimera Reviewed-by: Douglas Anderson --- drivers/gpu/drm/drm_atomic.c | 60 ++++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_atomic.h | 7 ++++++ 2 files changed, 67 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 58c0283..87fcb55 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -983,6 +983,66 @@ drm_atomic_get_new_connector_for_encoder(struct drm_atomic_state *state, EXPORT_SYMBOL(drm_atomic_get_new_connector_for_encoder); /** + * drm_atomic_get_old_crtc_for_encoder - Get old crtc for an encoder + * @state: Atomic state + * @encoder: The encoder to fetch the crtc state for + * + * This function finds and returns the crtc that was connected to @encoder + * as specified by the @state. + * + * Returns: The old crtc connected to @encoder, or NULL if the encoder is + * not connected. + */ +struct drm_crtc * +drm_atomic_get_old_crtc_for_encoder(struct drm_atomic_state *state, + struct drm_encoder *encoder) +{ + struct drm_connector *connector; + struct drm_connector_state *conn_state; + + connector = drm_atomic_get_old_connector_for_encoder(state, encoder); + if (!connector) + return NULL; + + conn_state = drm_atomic_get_old_connector_state(state, connector); + if (!conn_state) + return NULL; + + return conn_state->crtc; +} +EXPORT_SYMBOL(drm_atomic_get_old_crtc_for_encoder); + +/** + * drm_atomic_get_new_crtc_for_encoder - Get new crtc for an encoder + * @state: Atomic state + * @encoder: The encoder to fetch the crtc state for + * + * This function finds and returns the crtc that will be connected to @encoder + * as specified by the @state. + * + * Returns: The new crtc connected to @encoder, or NULL if the encoder is + * not connected. + */ +struct drm_crtc * +drm_atomic_get_new_crtc_for_encoder(struct drm_atomic_state *state, + struct drm_encoder *encoder) +{ + struct drm_connector *connector; + struct drm_connector_state *conn_state; + + connector = drm_atomic_get_new_connector_for_encoder(state, encoder); + if (!connector) + return NULL; + + conn_state = drm_atomic_get_new_connector_state(state, connector); + if (!conn_state) + return NULL; + + return conn_state->crtc; +} +EXPORT_SYMBOL(drm_atomic_get_new_crtc_for_encoder); + +/** * drm_atomic_get_connector_state - get connector state * @state: global atomic state object * @connector: connector to get state object for diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h index 0777725..7001f12 100644 --- a/include/drm/drm_atomic.h +++ b/include/drm/drm_atomic.h @@ -528,6 +528,13 @@ struct drm_connector * drm_atomic_get_new_connector_for_encoder(struct drm_atomic_state *state, struct drm_encoder *encoder); +struct drm_crtc * +drm_atomic_get_old_crtc_for_encoder(struct drm_atomic_state *state, + struct drm_encoder *encoder); +struct drm_crtc * +drm_atomic_get_new_crtc_for_encoder(struct drm_atomic_state *state, + struct drm_encoder *encoder); + /** * drm_atomic_get_existing_crtc_state - get CRTC state, if it exists * @state: global atomic state object