From patchwork Thu Feb 1 12:53:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13541039 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 8FC59C47DDF for ; Thu, 1 Feb 2024 12:53:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B13E310ED72; Thu, 1 Feb 2024 12:53:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="GdFp4wvJ"; dkim-atps=neutral Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id A595110ED6D for ; Thu, 1 Feb 2024 12:53:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1706791992; bh=NNwf1FU4iKYIcxafPzqdiApb/zXktJGn2dDrtHe6Qpw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GdFp4wvJjncBQA1ogeJl0aGoGyBzQAiBITHtesgYh+D8i99YIOKoDHBN9JMOXYWrd XieFPVy9ILHGZxJKGMtBBNgbGvuZW5zNf2mSxyzXIWIfXh1o4ZjXFjM8k40qjAy7xU zhi8QdKx1Q8pZvl2pnB+gj45HUcDmWxD5Hj/zckFnXLc02XQFHxc4NpLOjSNetFXXg TBJa+uGUQlwZ8/XX3X741vIbuK2cqrpf9qpJXLbAkUyMgOqvQNnvxGrO4/1/KURz3g mHPQGHjrcCrmIkZUjN/ofAuiOMlpNqAbmPfMTs5d8xZbWCzmzYU7BlVu6qwkGJ7o3G FpO0XvB3xEBhQ== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madrid.collaboradmins.com (Postfix) with ESMTPSA id EC492378208C; Thu, 1 Feb 2024 12:53:11 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, nancy.lin@mediatek.com, nathan.lu@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, wenst@chromium.org Subject: [PATCH 1/3] drm/mediatek: drm_ddp_comp: Fix and cleanup DDP component CRTC search Date: Thu, 1 Feb 2024 13:53:02 +0100 Message-ID: <20240201125304.218467-2-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> References: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 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" Finding a possible CRTC by DDP component is done by first checking static routes in three paths (main, external, third/extra path) and then, if not found, we check for dynamic connection on a per-route basis because, for example, on some SoCs the main route may output to either a DSI display or DisplayPort and this is finally done by assigning a CRTC mask to `possible_crtcs`, found with function mtk_drm_find_comp_in_ddp_conn_path(): being that a mask the possible values are BIT(x) and, if no CRTC is possible, zero. Problem is, both mtk_drm_find_possible_crtc_by_comp() and the aforementioned function are trying to return a negative error value (but it's unsigned int!) if no CRTC was found, which is wrong for multiple obvious reasons. Cleanup both functions, so that: - mtk_drm_find_comp_in_ddp_conn_path() returns a signed integer with a negative number for error, or a bit/bitmask of the found possible CRTC; and - mtk_drm_find_possible_crtc_by_comp() always returns either a bitmask of the possible CRTC, or zero if none available. Fixes: 01389b324c97 ("drm/mediatek: Add connector dynamic selection capability") Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 44 ++++++++++----------- 1 file changed, 21 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index a9b5a21cde2d..c13359eeb3cd 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -513,29 +513,25 @@ static bool mtk_drm_find_comp_in_ddp(struct device *dev, return false; } -static unsigned int mtk_drm_find_comp_in_ddp_conn_path(struct device *dev, - const struct mtk_drm_route *routes, - unsigned int num_routes, - struct mtk_ddp_comp *ddp_comp) +static int mtk_drm_find_comp_in_ddp_conn_path(struct device *dev, + const struct mtk_drm_route *routes, + unsigned int num_routes, + struct mtk_ddp_comp *ddp_comp) { - int ret; - unsigned int i; + int i; - if (!routes) { - ret = -EINVAL; - goto err; + if (!routes || !num_routes) { + DRM_ERROR("No connection routes specified!\n"); + return -EINVAL; } for (i = 0; i < num_routes; i++) if (dev == ddp_comp[routes[i].route_ddp].dev) return BIT(routes[i].crtc_id); - ret = -ENODEV; -err: - - DRM_INFO("Failed to find comp in ddp table, ret = %d\n", ret); + DRM_ERROR("Failed to find component in ddp table\n"); - return 0; + return -ENODEV; } int mtk_ddp_comp_get_id(struct device_node *node, @@ -557,22 +553,24 @@ unsigned int mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm, struct device *dev) { struct mtk_drm_private *private = drm->dev_private; - unsigned int ret = 0; + int ret; if (mtk_drm_find_comp_in_ddp(dev, private->data->main_path, private->data->main_len, private->ddp_comp)) - ret = BIT(0); + return BIT(0); else if (mtk_drm_find_comp_in_ddp(dev, private->data->ext_path, private->data->ext_len, private->ddp_comp)) - ret = BIT(1); + return BIT(1); else if (mtk_drm_find_comp_in_ddp(dev, private->data->third_path, private->data->third_len, private->ddp_comp)) - ret = BIT(2); - else - ret = mtk_drm_find_comp_in_ddp_conn_path(dev, - private->data->conn_routes, - private->data->num_conn_routes, - private->ddp_comp); + return BIT(2); + + ret = mtk_drm_find_comp_in_ddp_conn_path(dev, private->data->conn_routes, + private->data->num_conn_routes, + private->ddp_comp); + /* No CRTC is available: return a zero mask */ + if (ret < 0) + return 0; return ret; } From patchwork Thu Feb 1 12:53:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13541038 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 53CBAC4828C for ; Thu, 1 Feb 2024 12:53:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2BB4610ED6F; 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Thu, 1 Feb 2024 12:53:13 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, nancy.lin@mediatek.com, nathan.lu@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, wenst@chromium.org Subject: [PATCH 2/3] drm/mediatek: Perform iounmap on simple DDP component destruction Date: Thu, 1 Feb 2024 13:53:03 +0100 Message-ID: <20240201125304.218467-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> References: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 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" Add a new mtk_ddp_comp_destroy() function and call it in the teardown path of mtk_drm_drv to make sure that we unmap the iospace of the simple DDP components. While at it, also fix iounmapping on mtk_ddp_comp_init() error path. Fixes: ff1395609e20 ("drm/mediatek: Move mtk_ddp_comp_init() from sub driver to DRM driver") Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 38 ++++++++++++++++++++- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 + drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 ++- 3 files changed, 41 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index c13359eeb3cd..539b526a6b0a 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -626,8 +626,11 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, priv->regs = of_iomap(node, 0); priv->clk = of_clk_get(node, 0); - if (IS_ERR(priv->clk)) + if (IS_ERR(priv->clk)) { + iounmap(priv->regs); + priv->regs = NULL; return PTR_ERR(priv->clk); + } #if IS_REACHABLE(CONFIG_MTK_CMDQ) ret = cmdq_dev_get_client_reg(comp->dev, &priv->cmdq_reg, 0); @@ -639,3 +642,36 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, return 0; } + +void mtk_ddp_comp_destroy(struct mtk_ddp_comp *comp) +{ + struct mtk_ddp_comp_dev *priv; + + if (!comp || !comp->dev) + return; + + /* Complex components are destroyed with their own remove callback */ + if (type == MTK_DISP_AAL || + type == MTK_DISP_BLS || + type == MTK_DISP_CCORR || + type == MTK_DISP_COLOR || + type == MTK_DISP_GAMMA || + type == MTK_DISP_MERGE || + type == MTK_DISP_OVL || + type == MTK_DISP_OVL_2L || + type == MTK_DISP_PWM || + type == MTK_DISP_RDMA || + type == MTK_DPI || + type == MTK_DP_INTF || + type == MTK_DSI) + return; + + priv = dev_get_drvdata(comp->dev); + if (!priv) + return; + + if (priv->regs) { + iounmap(priv->regs); + priv->regs = NULL; + } +} diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 15b2eafff438..43372b416a3f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -318,6 +318,7 @@ unsigned int mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm, struct device *dev); int mtk_ddp_comp_init(struct device_node *comp_node, struct mtk_ddp_comp *comp, unsigned int comp_id); +void mtk_ddp_comp_destroy(struct mtk_ddp_comp *comp); enum mtk_ddp_comp_type mtk_ddp_comp_get_type(unsigned int comp_id); void mtk_ddp_write(struct cmdq_pkt *cmdq_pkt, unsigned int value, struct cmdq_client_reg *cmdq_reg, void __iomem *regs, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 14a1e0157cc4..89b6c31a1511 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -944,8 +944,10 @@ static void mtk_drm_remove(struct platform_device *pdev) component_master_del(&pdev->dev, &mtk_drm_ops); pm_runtime_disable(&pdev->dev); of_node_put(private->mutex_node); - for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++) + for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++) { + mtk_ddp_comp_destroy(&private->ddp_comp[i]); of_node_put(private->comp_node[i]); + } } static int mtk_drm_sys_prepare(struct device *dev) From patchwork Thu Feb 1 12:53:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13541040 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 2567BC4828D for ; Thu, 1 Feb 2024 12:53:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7B09710ED6B; Thu, 1 Feb 2024 12:53:19 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="FLckKJ25"; dkim-atps=neutral Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5ACBF10ED6B for ; Thu, 1 Feb 2024 12:53:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1706791995; bh=soGWShtp1fE1scZOoOivLMJWWmkLBlGxzNtJ8q6CdrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FLckKJ25YStrCwmV5MWq9MkI58ksS265iNzGTCslvCL7vXFE/iaCWN+y/AbxvW/wr /AWfHHLIw1Jj2gPYOyGWpMiGHNebUb0hqknVb2A1EdrIxi8+WK3OJqA6/zKuxHL81d gBAd7nCFnQW+KPC1BxbLJ9Z5V7iTkAQQps5Cw5C0xzhoLNRoDZm4carNn7fF8VgKlG 5wUx/DJ5Fq0/S/0KDldTsfIM1TwkXWPu7v773LjRdSBRa+dWmc3JFjJDVoQLsRSt3T yFaaSqo0D5sMcwUCiB1xdYr6IDbSOlEzhLyvriE6h2i58sn/hmlm9TCZngXmW3bbIw NWp6Wy4es1BkQ== Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 48339378208F; Thu, 1 Feb 2024 12:53:14 +0000 (UTC) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, nancy.lin@mediatek.com, nathan.lu@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, wenst@chromium.org Subject: [PATCH 3/3] drm/mediatek: drm_ddp_comp: Add mtk_ddp_is_simple_comp() internal helper Date: Thu, 1 Feb 2024 13:53:04 +0100 Message-ID: <20240201125304.218467-4-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> References: <20240201125304.218467-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 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" Move the simple component check to a new mtk_ddp_is_simple_comp() internal helper to reduce code duplication. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: CK Hu --- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 57 +++++++++++---------- 1 file changed, 31 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c index 539b526a6b0a..4ca2a02ada3c 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -575,6 +575,29 @@ unsigned int mtk_drm_find_possible_crtc_by_comp(struct drm_device *drm, return ret; } +static bool mtk_ddp_is_simple_comp(enum mtk_ddp_comp_type type) +{ + switch (type) { + case MTK_DISP_AAL: + case MTK_DISP_BLS: + case MTK_DISP_CCORR: + case MTK_DISP_COLOR: + case MTK_DISP_GAMMA: + case MTK_DISP_MERGE: + case MTK_DISP_OVL: + case MTK_DISP_OVL_2L: + case MTK_DISP_OVL_ADAPTOR: + case MTK_DISP_PWM: + case MTK_DISP_RDMA: + case MTK_DP_INTF: + case MTK_DPI: + case MTK_DSI: + return false; + default: + return true; + } +} + int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, unsigned int comp_id) { @@ -605,19 +628,13 @@ int mtk_ddp_comp_init(struct device_node *node, struct mtk_ddp_comp *comp, } comp->dev = &comp_pdev->dev; - if (type == MTK_DISP_AAL || - type == MTK_DISP_BLS || - type == MTK_DISP_CCORR || - type == MTK_DISP_COLOR || - type == MTK_DISP_GAMMA || - type == MTK_DISP_MERGE || - type == MTK_DISP_OVL || - type == MTK_DISP_OVL_2L || - type == MTK_DISP_PWM || - type == MTK_DISP_RDMA || - type == MTK_DPI || - type == MTK_DP_INTF || - type == MTK_DSI) + /* + * Resources for simple components are retrieved here as those are + * managed in here without the need of more complex drivers; for + * the latter, their respective probe function will do the job, so + * we must avoid getting their resources here. + */ + if (!mtk_ddp_is_simple_comp(type)) return 0; priv = devm_kzalloc(comp->dev, sizeof(*priv), GFP_KERNEL); @@ -651,19 +668,7 @@ void mtk_ddp_comp_destroy(struct mtk_ddp_comp *comp) return; /* Complex components are destroyed with their own remove callback */ - if (type == MTK_DISP_AAL || - type == MTK_DISP_BLS || - type == MTK_DISP_CCORR || - type == MTK_DISP_COLOR || - type == MTK_DISP_GAMMA || - type == MTK_DISP_MERGE || - type == MTK_DISP_OVL || - type == MTK_DISP_OVL_2L || - type == MTK_DISP_PWM || - type == MTK_DISP_RDMA || - type == MTK_DPI || - type == MTK_DP_INTF || - type == MTK_DSI) + if (!mtk_ddp_is_simple_comp(mtk_ddp_matches[comp->id].type)) return; priv = dev_get_drvdata(comp->dev);