From patchwork Tue Nov 13 20:52:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Paul X-Patchwork-Id: 10681535 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E1F4414DB for ; Tue, 13 Nov 2018 20:53:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D33962B537 for ; Tue, 13 Nov 2018 20:53:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C748E2B6D8; Tue, 13 Nov 2018 20:53:13 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4F6162B537 for ; Tue, 13 Nov 2018 20:53:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D1FA36E385; Tue, 13 Nov 2018 20:53:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-yb1-xb43.google.com (mail-yb1-xb43.google.com [IPv6:2607:f8b0:4864:20::b43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 705796E385 for ; Tue, 13 Nov 2018 20:53:10 +0000 (UTC) Received: by mail-yb1-xb43.google.com with SMTP id g192-v6so6000927ybf.3 for ; Tue, 13 Nov 2018 12:53:10 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=Gw8hEOv58ViRfS9flWGeHJFwnbGtlE0LSz6pZTAyGds=; b=R9O4/lsIHBNUsm9MraRk1eYnosHKuq/Pgx6V2wLQVEdu7DPig8MMh6LmsvlAPb4FL4 ERmYyKGairDDGWYKJkIvVeKMlvwnZXLx/udnFsgk4oy+oZMjPr39liZ+1TKk54vSSnm3 J5GBxD3ctNelwXONNEvYtssuiJzw86FocU8j4NpYHKLoenFnoCyK0gZ2o0vjmLjekhoV 7vvLrsHLX3xRVJIOad4Z/A1eubuFedfC39ZI0zYHQCOQrP3FgYT+9nwdy6s62YY19XiH QHxu2vX40JlHLHx2KiFfXG5d0ChOf6OMtqlyrd+WRUs7GjY4j/bmRgkYMXZPhpbWwoyS jOXA== X-Gm-Message-State: AGRZ1gLDokTLHWS6km3yAxcI0PskrglXh+17sBp2vxBSEBDO735IQlEe 8TBjKZEa4dbeQhLtq8DUsYFmRpMP7NOAIA== X-Google-Smtp-Source: AJdET5fmiPlko+uXxNVbMWR70rZQD7DvS0aKU9a8Qrj/4GD2avPhXJZgQhit/WvXcqkMM0q4LkAEAw== X-Received: by 2002:a5b:cce:: with SMTP id e14-v6mr6330773ybr.350.1542142389382; Tue, 13 Nov 2018 12:53:09 -0800 (PST) Received: from rosewood.cam.corp.google.com ([2620:0:1013:11:ad55:b1db:adfe:3b9f]) by smtp.gmail.com with ESMTPSA id u130-v6sm5441257ywa.71.2018.11.13.12.53.08 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 Nov 2018 12:53:09 -0800 (PST) From: Sean Paul To: dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org Subject: [PATCH 3/8] drm/msm: dpu: Remove vblank_callback from encoder Date: Tue, 13 Nov 2018 15:52:46 -0500 Message-Id: <20181113205257.170707-3-sean@poorly.run> X-Mailer: git-send-email 2.19.1.930.g4563a0d9d0-goog In-Reply-To: <20181113205257.170707-1-sean@poorly.run> References: <20181113205257.170707-1-sean@poorly.run> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Sean Paul The indirection of registering a callback and opaque pointer isn't real useful when there's only one callsite. So instead of having the vblank_cb registration, just give encoder a crtc and let it directly call the vblank handler. In a later patch, we'll make use of this further. Signed-off-by: Sean Paul --- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 8 +++---- drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h | 6 +++++ drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 25 +++++++++++---------- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 10 ++++----- 4 files changed, 26 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c index adda0aa0cbaa..38119b4d4a80 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c @@ -291,9 +291,8 @@ enum dpu_intf_mode dpu_crtc_get_intf_mode(struct drm_crtc *crtc) return INTF_MODE_NONE; } -static void dpu_crtc_vblank_cb(void *data) +void dpu_crtc_vblank_callback(struct drm_crtc *crtc) { - struct drm_crtc *crtc = (struct drm_crtc *)data; struct dpu_crtc *dpu_crtc = to_dpu_crtc(crtc); /* keep statistics on vblank callback - with auto reset via debugfs */ @@ -779,8 +778,7 @@ static void _dpu_crtc_vblank_enable_no_lock( DRMID(enc), enable, dpu_crtc); - dpu_encoder_register_vblank_callback(enc, - dpu_crtc_vblank_cb, (void *)crtc); + dpu_encoder_assign_crtc(enc, crtc); } } else { list_for_each_entry(enc, &dev->mode_config.encoder_list, head) { @@ -791,7 +789,7 @@ static void _dpu_crtc_vblank_enable_no_lock( DRMID(enc), enable, dpu_crtc); - dpu_encoder_register_vblank_callback(enc, NULL, NULL); + dpu_encoder_assign_crtc(enc, NULL); } } } diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h index 93d21a61a040..54595cc29be5 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.h @@ -270,6 +270,12 @@ static inline int dpu_crtc_frame_pending(struct drm_crtc *crtc) */ int dpu_crtc_vblank(struct drm_crtc *crtc, bool en); +/** + * dpu_crtc_vblank_callback - called on vblank irq, issues completion events + * @crtc: Pointer to drm crtc object + */ +void dpu_crtc_vblank_callback(struct drm_crtc *crtc); + /** * dpu_crtc_commit_kickoff - trigger kickoff of the commit for this crtc * @crtc: Pointer to drm crtc object diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index d89ac520f7e6..fd6514f681ae 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -142,9 +142,11 @@ enum dpu_enc_rc_states { * @intfs_swapped Whether or not the phys_enc interfaces have been swapped * for partial update right-only cases, such as pingpong * split where virtual pingpong does not generate IRQs - * @crtc_vblank_cb: Callback into the upper layer / CRTC for - * notification of the VBLANK - * @crtc_vblank_cb_data: Data from upper layer for VBLANK notification + * @crtc: Pointer to the currently assigned crtc. Normally you + * would use crtc->state->encoder_mask to determine the + * link between encoder/crtc. However in this case we need + * to track crtc in the disable() hook which is called + * _after_ encoder_mask is cleared. * @crtc_kickoff_cb: Callback into CRTC that will flush & start * all CTL paths * @crtc_kickoff_cb_data: Opaque user data given to crtc_kickoff_cb @@ -186,8 +188,7 @@ struct dpu_encoder_virt { bool intfs_swapped; - void (*crtc_vblank_cb)(void *); - void *crtc_vblank_cb_data; + struct drm_crtc *crtc; struct dentry *debugfs_root; struct mutex enc_lock; @@ -1241,8 +1242,8 @@ static void dpu_encoder_vblank_callback(struct drm_encoder *drm_enc, dpu_enc = to_dpu_encoder_virt(drm_enc); spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); - if (dpu_enc->crtc_vblank_cb) - dpu_enc->crtc_vblank_cb(dpu_enc->crtc_vblank_cb_data); + if (dpu_enc->crtc) + dpu_crtc_vblank_callback(dpu_enc->crtc); spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); atomic_inc(&phy_enc->vsync_cnt); @@ -1262,15 +1263,14 @@ static void dpu_encoder_underrun_callback(struct drm_encoder *drm_enc, DPU_ATRACE_END("encoder_underrun_callback"); } -void dpu_encoder_register_vblank_callback(struct drm_encoder *drm_enc, - void (*vbl_cb)(void *), void *vbl_data) +void dpu_encoder_assign_crtc(struct drm_encoder *drm_enc, struct drm_crtc *crtc) { struct dpu_encoder_virt *dpu_enc = to_dpu_encoder_virt(drm_enc); unsigned long lock_flags; bool enable; int i; - enable = vbl_cb ? true : false; + enable = crtc ? true : false; if (!drm_enc) { DPU_ERROR("invalid encoder\n"); @@ -1279,8 +1279,9 @@ void dpu_encoder_register_vblank_callback(struct drm_encoder *drm_enc, trace_dpu_enc_vblank_cb(DRMID(drm_enc), enable); spin_lock_irqsave(&dpu_enc->enc_spinlock, lock_flags); - dpu_enc->crtc_vblank_cb = vbl_cb; - dpu_enc->crtc_vblank_cb_data = vbl_data; + /* crtc should always be cleared before re-assigning */ + WARN_ON(crtc && dpu_enc->crtc); + dpu_enc->crtc = crtc; spin_unlock_irqrestore(&dpu_enc->enc_spinlock, lock_flags); for (i = 0; i < dpu_enc->num_phys_encs; i++) { diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h index aa4f135218fa..be1d80867834 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h @@ -55,14 +55,12 @@ void dpu_encoder_get_hw_resources(struct drm_encoder *encoder, struct dpu_encoder_hw_resources *hw_res); /** - * dpu_encoder_register_vblank_callback - provide callback to encoder that - * will be called on the next vblank. + * dpu_encoder_assign_crtc - Link the encoder to the crtc it's assigned to * @encoder: encoder pointer - * @cb: callback pointer, provide NULL to deregister and disable IRQs - * @data: user data provided to callback + * @crtc: crtc pointer */ -void dpu_encoder_register_vblank_callback(struct drm_encoder *encoder, - void (*cb)(void *), void *data); +void dpu_encoder_assign_crtc(struct drm_encoder *encoder, + struct drm_crtc *crtc); /** * dpu_encoder_register_frame_event_callback - provide callback to encoder that