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=?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch makes the above function public (for use in exynos-bus devfreq driver). Signed-off-by: Artur Świgoń Reviewed-by: Krzysztof Kozlowski Reviewed-by: Chanwoo Choi --- drivers/interconnect/core.c | 3 ++- include/linux/interconnect-provider.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 63c164264b73..e6035c199369 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -330,7 +330,7 @@ EXPORT_SYMBOL_GPL(of_icc_xlate_onecell); * Returns a valid pointer to struct icc_node on success or ERR_PTR() * on failure. */ -static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) { struct icc_node *node = ERR_PTR(-EPROBE_DEFER); struct icc_provider *provider; @@ -349,6 +349,7 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) return node; } +EXPORT_SYMBOL_GPL(of_icc_get_from_provider); /** * of_icc_get() - get a path handle from a DT node based on name diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index 0c494534b4d3..cc965b8fab53 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -103,6 +103,7 @@ void icc_node_del(struct icc_node *node); int icc_nodes_remove(struct icc_provider *provider); int icc_provider_add(struct icc_provider *provider); int icc_provider_del(struct icc_provider *provider); +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec); #else @@ -154,6 +155,11 @@ static inline int icc_provider_del(struct icc_provider *provider) return -ENOTSUPP; } +struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) +{ + return ERR_PTR(-ENOTSUPP); +} + #endif /* CONFIG_INTERCONNECT */ #endif /* __LINUX_INTERCONNECT_PROVIDER_H */ From patchwork Fri Dec 20 11:56:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: 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20191220120142eusmtrp2e910750d60d4180ce0814f512362bffe~iEqEdfqBq2149221492eusmtrp2t; Fri, 20 Dec 2019 12:01:42 +0000 (GMT) X-AuditID: cbfec7f2-f0bff7000001ef66-da-5dfcb8276ad7 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id AF.58.07950.628BCFD5; Fri, 20 Dec 2019 12:01:42 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191220120141eusmtip2c7b8b86d637d9087cdf254161b9d59b0~iEqDmY0oK2848028480eusmtip2c; Fri, 20 Dec 2019 12:01:41 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH v3 2/7] interconnect: Relax requirement in of_icc_get_from_provider() Date: Fri, 20 Dec 2019 12:56:48 +0100 Message-Id: <20191220115653.6487-3-a.swigon@samsung.com> 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reputation (+3) [210.118.77.11 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.11 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: b.zolnierkie@samsung.com, sw0312.kim@samsung.com, =?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch relaxes the condition in of_icc_get_from_provider() so that it is no longer required to set #interconnect-cells = <1> in the DT. In case of the devfreq driver for exynos-bus, #interconnect-cells is always zero. Signed-off-by: Artur Świgoń Acked-by: Krzysztof Kozlowski --- drivers/interconnect/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index e6035c199369..74c68898a350 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -335,7 +335,7 @@ struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) struct icc_node *node = ERR_PTR(-EPROBE_DEFER); struct icc_provider *provider; - if (!spec || spec->args_count != 1) + if (!spec) return ERR_PTR(-EINVAL); mutex_lock(&icc_lock); From patchwork Fri Dec 20 11:56:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= X-Patchwork-Id: 11305297 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7184F13A4 for ; Fri, 20 Dec 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by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20191220120144eucas1p255f58b670015246946f49606b925c015~iEqFsC3AQ2385123851eucas1p2J; Fri, 20 Dec 2019 12:01:44 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges3new.samsung.com (EUCPMTA) with SMTP id 72.3E.60698.728BCFD5; Fri, 20 Dec 2019 12:01:43 +0000 (GMT) Received: from eusmtrp2.samsung.com (unknown [182.198.249.139]) by eucas1p1.samsung.com (KnoxPortal) with ESMTPA id 20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f~iEqFPIy1T1904419044eucas1p1N; Fri, 20 Dec 2019 12:01:43 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20191220120143eusmtrp2b884f64582ad1d849e0567c67ef48dca~iEqFOgpKV2149121491eusmtrp2v; Fri, 20 Dec 2019 12:01:43 +0000 (GMT) X-AuditID: cbfec7f5-a0fff7000001ed1a-45-5dfcb8272004 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id B0.68.07950.728BCFD5; Fri, 20 Dec 2019 12:01:43 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191220120142eusmtip2ad17b9c1cc2c8795cf1c39a213e1ea8a~iEqEZKDP12783527835eusmtip2u; Fri, 20 Dec 2019 12:01:42 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH v3 3/7] interconnect: Allow inter-provider pairs to be configured Date: Fri, 20 Dec 2019 12:56:49 +0100 Message-Id: <20191220115653.6487-4-a.swigon@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191220115653.6487-1-a.swigon@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0hTYRjG+XZ2zi40OU2pF7tIg6ikK4V8lYiWxKGgyz8FhdXSk4s5jR0v WUGaaVMxZFKzaRdNUqalzgu2Sm2NRlSTZq2B2kyzYbSiVEgd1raT1X+/732f53veF14xIe8n 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20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f References: <20191220115653.6487-1-a.swigon@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_040145_729155_2BAF2958 X-CRM114-Status: GOOD ( 14.78 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [210.118.77.12 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.12 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: b.zolnierkie@samsung.com, sw0312.kim@samsung.com, =?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org In the exynos-bus devfreq driver every bus is probed separately and is assigned a separate interconnect provider. However, the interconnect framework does not call the '->set' callback for pairs of nodes which belong to different providers. This patch adds support for a new boolean 'inter_set' field in struct icc_provider. Setting it to 'true' enables calling '->set' for inter-provider node pairs. All existing users of the interconnect framework allocate this structure with kzalloc, and are therefore unaffected. Signed-off-by: Artur Świgoń --- drivers/interconnect/core.c | 11 +++++------ include/linux/interconnect-provider.h | 2 ++ 2 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 74c68898a350..a28bd0f8a497 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -259,23 +259,22 @@ static int aggregate_requests(struct icc_node *node) static int apply_constraints(struct icc_path *path) { struct icc_node *next, *prev = NULL; + struct icc_provider *p; int ret = -EINVAL; int i; for (i = 0; i < path->num_nodes; i++) { next = path->reqs[i].node; + p = next->provider; - /* - * Both endpoints should be valid master-slave pairs of the - * same interconnect provider that will be configured. - */ - if (!prev || next->provider != prev->provider) { + /* both endpoints should be valid master-slave pairs */ + if (!prev || (p != prev->provider && !p->inter_set)) { prev = next; continue; } /* set the constraints */ - ret = next->provider->set(prev, next); + ret = p->set(prev, next); if (ret) goto out; diff --git a/include/linux/interconnect-provider.h b/include/linux/interconnect-provider.h index cc965b8fab53..b6ae0ee686c5 100644 --- a/include/linux/interconnect-provider.h +++ b/include/linux/interconnect-provider.h @@ -41,6 +41,7 @@ struct icc_node *of_icc_xlate_onecell(struct of_phandle_args *spec, * @xlate: provider-specific callback for mapping nodes from phandle arguments * @dev: the device this interconnect provider belongs to * @users: count of active users + * @inter_set: whether inter-provider pairs will be configured with @set * @data: pointer to private data */ struct icc_provider { @@ -53,6 +54,7 @@ struct icc_provider { struct icc_node* (*xlate)(struct of_phandle_args *spec, void *data); struct device *dev; int users; + bool inter_set; void *data; }; From patchwork Fri Dec 20 11:56:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= X-Patchwork-Id: 11305299 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7EEED1580 for ; 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Fri, 20 Dec 2019 12:01:43 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH v3 4/7] arm: dts: exynos: Add interconnect bindings for Exynos4412 Date: Fri, 20 Dec 2019 12:56:50 +0100 Message-Id: <20191220115653.6487-5-a.swigon@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191220115653.6487-1-a.swigon@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA01Sa0hTYRjuO2fn7DiaHDfLl4qkUaRBaib0dcGKIg79CulHBKOWnlR0Tna0 NIi8ZMwkMyO8FGUhzSamLi9zVOQcDZE0Ly1NZUF2WReXbqObZbqzLv+e77m8z/vCx5AKJ7WC Sc/K4fVZmkwVLZN0PP7WvzHKMqeOa3oRhV3XSxBurW6m8HPfWwrfsPdTeMTvoXHVAzONK10V Ejww0CLFDZMzFDa/clJ42HqNxt4LdoSrBx4SuMk+KcXjhQ00rr7spnexnNlUSnMTzvs05ypz ENy9+jNc67SF4MrbTIjzmlcfkB6W7UjhM9NP8PrYxKOytFtjIyjbL8t793GMKEDlIedRCANs AhR5fNR5JGMUbAMCr/OuRHz4EHx2WGjx4UXQVFVM/ImU/+gmRcGIoGqgV/o3UtJzR7Lootnd UHnlZUAIZ+0ILtd5AoNJ9hoBhlJjwKVkD8HszCC9iCXsOui0PQl0yFkM7hljsC8SGlsekYs4 hN0Ko8+GSNETBr01U4E55IKnuP1qYCdg/VJwVPikYngv+M9epESshPeOtiC/Cua7bgQLBHjd 5aLEcAEC8207KQrbYaL/+8J2zEJDNDRbY0V6N7R/KSMWaWBDYfRTmLhDKFR2VJEiLQfDOYUI VWCtCRWDAEWNzuBsDgbrS6kKtKb2v2Nq/zum9l9tHSJNKILPFbSpvBCfxZ+METRaITcrNSZZ pzWjhd/W98vhsyDr3DEbYhmkWip/l/xDraA0J4R8rQ0BQ6rC5eOGb2qFPEWTf4rX647oczN5 wYZWMhJVhHzzLbdawaZqcvgMns/m9X9UgglZUYAO5y2fXzvtTky6A95ZpTl22MQVPt2zb9n6 h3MPouJW1qsvRUpndJfGoq2j/P6pyPnpi8+uJPldDssEbOMSvzo9y3b+LKP9fQezXRlLdPF5 Ob1tQ4bZEmP3zdbTSdFvUmwcm1+z177cQbjIGENdb9iWSeVIzK6E/J7jaS86P+xUSYQ0zaYN pF7Q/AaaHXOOaQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrJIsWRmVeSWpSXmKPExsVy+t/xe7oaO/7EGnzYImhxf14ro8XGGetZ La5/ec5qMf/IOVaLK1/fs1lM37uJzWLS/QksFufPb2C3WHH3I6vFpsfXWC0u75rDZvG59wij xYzz+5gs1h65y25xu3EFm8WMyS/ZHAQ8Nq3qZPO4c20Pm8f97uNMHpuX1HtsfLeDyaNvyypG j8+b5ALYo/RsivJLS1IVMvKLS2yVog0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/Tt EvQyFt28wljwlavixZubTA2MfZxdjJwcEgImEn2/DzKD2EICSxklHs+ThYhLSHxcf4MVwhaW +HOti62LkQuo5hOjxMw7XWANbAKOEpOmPmAHSYgInGKU2Lr8HBtIgllgBZNE/xxhEFtYIEzi zuXr7CA2i4CqxPZDZ5lAbF4BC4mXH5czQWyQl1i94QDYUE4BS4kbVy9BXWQhsfNzH1S9oMTJ mU9Yuhg5gOarS6yfJwSxSl6ieets5gmMgrOQVM1CqJqFpGoBI/MqRpHU0uLc9NxiI73ixNzi 0rx0veT83E2MwGjdduznlh2MXe+CDzEKcDAq8fA6pP2OFWJNLCuuzD3EKMHBrCTCe7vjZ6wQ b0piZVVqUX58UWlOavEhRlOg1yYyS4km5wMTSV5JvKGpobmFpaG5sbmxmYWSOG+HwMEYIYH0 xJLU7NTUgtQimD4mDk6pBkbTW2eer2UTu7V985m7Z1QNRadacCjHfvSXP1dZ7btT51uxTMbq /TWbW2N+Vtf+WLpu0Vmxlv0J84MYZy94XzHn5i4Pvt1Ou5tjTbx1ze2mHfqcwpebdM5GyG1R wPwbWw6zhMklyW4yqGvL64v92zyNccKOGidbg0OaLDOn6N7JLU8+Nm330xwlluKMREMt5qLi RAB3lwoS7AIAAA== X-CMS-MailID: 20191220120144eucas1p119ececf161a6d45a6a194e432bbbd1f9 X-Msg-Generator: CA X-RootMTR: 20191220120144eucas1p119ececf161a6d45a6a194e432bbbd1f9 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120144eucas1p119ececf161a6d45a6a194e432bbbd1f9 References: <20191220115653.6487-1-a.swigon@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_040146_610725_F5AEC7C5 X-CRM114-Status: UNSURE ( 9.47 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [210.118.77.11 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.11 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: b.zolnierkie@samsung.com, sw0312.kim@samsung.com, =?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch adds the following properties to the Exynos4412 DT: - exynos,interconnect-parent-node: to declare connections between nodes in order to guarantee PM QoS requirements between nodes; - #interconnect-cells: required by the interconnect framework. Note that #interconnect-cells is always zero and node IDs are not hardcoded anywhere. Signed-off-by: Artur Świgoń Reviewed-by: Chanwoo Choi --- arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi index 4ce3d77a6704..d9d70eacfcaf 100644 --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi @@ -90,6 +90,7 @@ &bus_dmc { exynos,ppmu-device = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>; vdd-supply = <&buck1_reg>; + #interconnect-cells = <0>; status = "okay"; }; @@ -106,6 +107,8 @@ &bus_leftbus { exynos,ppmu-device = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>; vdd-supply = <&buck3_reg>; + exynos,interconnect-parent-node = <&bus_dmc>; + #interconnect-cells = <0>; status = "okay"; }; @@ -116,6 +119,8 @@ &bus_display { exynos,parent-bus = <&bus_leftbus>; + exynos,interconnect-parent-node = <&bus_leftbus>; + #interconnect-cells = <0>; status = "okay"; }; From patchwork Fri Dec 20 11:56:51 2019 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=?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch adds interconnect functionality to the exynos-bus devfreq driver. The SoC topology is a graph (or, more specifically, a tree) and its edges are specified using the 'exynos,interconnect-parent-node' in the DT. Due to unspecified relative probing order, -EPROBE_DEFER may be propagated to ensure that the parent is probed before its children. Each bus is now an interconnect provider and an interconnect node as well (cf. Documentation/interconnect/interconnect.rst), i.e. every bus registers itself as a node. Node IDs are not hardcoded but rather assigned at runtime, in probing order (subject to the above-mentioned exception regarding relative order). This approach allows for using this driver with various Exynos SoCs. Frequencies requested via the interconnect API for a given node are propagated to devfreq using dev_pm_qos_update_request(). Please note that it is not an error when CONFIG_INTERCONNECT is 'n', in which case all interconnect API functions are no-op. Signed-off-by: Artur Świgoń --- drivers/devfreq/exynos-bus.c | 144 +++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 9fdb188915e8..694a9581dcdb 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -14,14 +14,19 @@ #include #include #include +#include +#include #include #include #include +#include #include #include #define DEFAULT_SATURATION_RATIO 40 +#define kbps_to_khz(x) ((x) / 8) + struct exynos_bus { struct device *dev; @@ -35,6 +40,12 @@ struct exynos_bus { struct opp_table *opp_table; struct clk *clk; unsigned int ratio; + + /* One provider per bus, one node per provider */ + struct icc_provider provider; + struct icc_node *node; + + struct dev_pm_qos_request qos_req; }; /* @@ -205,6 +216,39 @@ static void exynos_bus_passive_exit(struct device *dev) clk_disable_unprepare(bus->clk); } +static int exynos_bus_icc_set(struct icc_node *src, struct icc_node *dst) +{ + struct exynos_bus *src_bus = src->data, *dst_bus = dst->data; + s32 src_freq = kbps_to_khz(src->avg_bw); + s32 dst_freq = kbps_to_khz(dst->avg_bw); + int ret; + + ret = dev_pm_qos_update_request(&src_bus->qos_req, src_freq); + if (ret < 0) { + dev_err(src_bus->dev, "failed to update PM QoS request"); + return ret; + } + + ret = dev_pm_qos_update_request(&dst_bus->qos_req, dst_freq); + if (ret < 0) { + dev_err(dst_bus->dev, "failed to update PM QoS request"); + return ret; + } + + return 0; +} + +static struct icc_node *exynos_bus_icc_xlate(struct of_phandle_args *spec, + void *data) +{ + struct exynos_bus *bus = data; + + if (spec->np != bus->dev->of_node) + return ERR_PTR(-EINVAL); + + return bus->node; +} + static int exynos_bus_parent_parse_of(struct device_node *np, struct exynos_bus *bus) { @@ -419,6 +463,96 @@ static int exynos_bus_profile_init_passive(struct exynos_bus *bus, return 0; } +static struct icc_node *exynos_bus_icc_get_parent(struct exynos_bus *bus) +{ + struct device_node *np = bus->dev->of_node; + struct of_phandle_args args; + int num, ret; + + num = of_count_phandle_with_args(np, "exynos,interconnect-parent-node", + "#interconnect-cells"); + if (num != 1) + return NULL; /* parent nodes are optional */ + + ret = of_parse_phandle_with_args(np, "exynos,interconnect-parent-node", + "#interconnect-cells", 0, &args); + if (ret < 0) + return ERR_PTR(ret); + + of_node_put(args.np); + + return of_icc_get_from_provider(&args); +} + +static int exynos_bus_icc_init(struct exynos_bus *bus) +{ + static DEFINE_IDA(ida); + + struct device *dev = bus->dev; + struct icc_provider *provider = &bus->provider; + struct icc_node *node, *parent_node; + int id, ret; + + /* Initialize the interconnect provider */ + provider->set = exynos_bus_icc_set; + provider->aggregate = icc_std_aggregate; + provider->xlate = exynos_bus_icc_xlate; + provider->dev = dev; + provider->inter_set = true; + provider->data = bus; + + ret = icc_provider_add(provider); + if (ret < 0) + return ret; + + ret = id = ida_alloc(&ida, GFP_KERNEL); + if (ret < 0) + goto err_id; + + node = icc_node_create(id); + if (IS_ERR(node)) { + ret = PTR_ERR(node); + goto err_node; + } + + bus->node = node; + node->name = dev->of_node->name; + node->data = bus; + icc_node_add(node, provider); + + parent_node = exynos_bus_icc_get_parent(bus); + if (IS_ERR(parent_node)) { + ret = PTR_ERR(parent_node); + goto err_parent; + } + + if (parent_node) { + ret = icc_link_create(node, parent_node->id); + if (ret < 0) + goto err_parent; + } + + ret = dev_pm_qos_add_request(bus->devfreq->dev.parent, &bus->qos_req, + DEV_PM_QOS_MIN_FREQUENCY, 0); + if (ret < 0) + goto err_request; + + return 0; + +err_request: + if (parent_node) + icc_link_destroy(node, parent_node); +err_parent: + icc_node_del(node); + icc_node_destroy(id); +err_node: + ida_free(&ida, id); +err_id: + icc_provider_del(provider); + + return ret; +} + static int exynos_bus_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -468,6 +602,16 @@ static int exynos_bus_probe(struct platform_device *pdev) if (ret < 0) goto err; + /* + * Initialize interconnect provider. A return value of -ENOTSUPP means + * that CONFIG_INTERCONNECT is disabled. + */ + ret = exynos_bus_icc_init(bus); + if (ret < 0 && ret != -ENOTSUPP) { + dev_err(dev, "failed to initialize the interconnect provider"); + goto err; + } + max_state = bus->devfreq->profile->max_state; min_freq = (bus->devfreq->profile->freq_table[0] / 1000); max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000); From patchwork Fri Dec 20 11:56:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= X-Patchwork-Id: 11305307 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 184F6138D for ; Fri, 20 Dec 2019 12:03:27 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No 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20191220120145eusmtip2b65526bcbcb8592d3644f3e504e06f1f~iEqGuNs463105631056eusmtip2b; Fri, 20 Dec 2019 12:01:45 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH v3 6/7] arm: dts: exynos: Add interconnects to Exynos4412 mixer Date: Fri, 20 Dec 2019 12:56:52 +0100 Message-Id: <20191220115653.6487-7-a.swigon@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191220115653.6487-1-a.swigon@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA01Se0hTYRTv2919aE0+p+lBy3LUHwWtxIIvirCIuEHF/rHIGDb1ppGu2lXL MPKBtpKWaOVcDyUixcjHqqmjQmy1huXQSgUNeyJGKWYKvlbb7qL++53ze5xz4HCU8g0dxR3V ZwsGvS5TxQTLbS9m3OvWts1rN4zVLSXDt0oQaTE30aT/1whNahzdNHk7Nc6QqidWhlQMl8uJ 293Mkvr3EzSxfu6jyRv7DYZMXnIgYnY/lZH7jvcsGSysZ4i5cpRJwLy14QLDD/U9ZvjhMqeM 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References: <20191220115653.6487-1-a.swigon@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_040148_273779_E05F58C0 X-CRM114-Status: GOOD ( 12.45 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [210.118.77.12 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.12 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: b.zolnierkie@samsung.com, sw0312.kim@samsung.com, =?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This patch adds an 'interconnects' property to Exynos4412 DTS in order to declare the interconnect path used by the mixer. Please note that the 'interconnect-names' property is not needed when there is only one path in 'interconnects', in which case calling of_icc_get() with a NULL name simply returns the right path. Signed-off-by: Artur Świgoń Reviewed-by: Chanwoo Choi --- arch/arm/boot/dts/exynos4412.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/exynos4412.dtsi b/arch/arm/boot/dts/exynos4412.dtsi index 48868947373e..13a679a9a107 100644 --- a/arch/arm/boot/dts/exynos4412.dtsi +++ b/arch/arm/boot/dts/exynos4412.dtsi @@ -771,6 +771,7 @@ clock-names = "mixer", "hdmi", "sclk_hdmi", "vp"; clocks = <&clock CLK_MIXER>, <&clock CLK_HDMI>, <&clock CLK_SCLK_HDMI>, <&clock CLK_VP>; + interconnects = <&bus_display &bus_dmc>; }; &pmu { From patchwork Fri Dec 20 11:56:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= X-Patchwork-Id: 11305311 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 872A6138D for ; Fri, 20 Dec 2019 12:03:44 +0000 (UTC) Received: from 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(KnoxPortal) with ESMTP id 20191220120147eucas1p1b2a0121aa707c8134bfaa16d35454ae3~iEqIlHHLV2488424884eucas1p15; Fri, 20 Dec 2019 12:01:47 +0000 (GMT) Received: from eucas1p2.samsung.com ( [182.198.249.207]) by eusmges3new.samsung.com (EUCPMTA) with SMTP id 08.3E.60698.B28BCFD5; Fri, 20 Dec 2019 12:01:47 +0000 (GMT) Received: from eusmtrp2.samsung.com (unknown [182.198.249.139]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20191220120146eucas1p22a7b0457be4f378b113f67dc25f2eba7~iEqIUKKKm2914729147eucas1p23; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20191220120146eusmtrp20e541263f3651a59e5c31138416cf359~iEqITjJN82149221492eusmtrp24; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) X-AuditID: cbfec7f5-a29ff7000001ed1a-50-5dfcb82bfc1d Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id A8.87.08375.A28BCFD5; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191220120146eusmtip28e4c90497745c6fe92f36c1c6485b24a~iEqHhkEs02950829508eusmtip2R; Fri, 20 Dec 2019 12:01:45 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH v3 7/7] drm: exynos: mixer: Add interconnect support Date: Fri, 20 Dec 2019 12:56:53 +0100 Message-Id: <20191220115653.6487-8-a.swigon@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191220115653.6487-1-a.swigon@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0hTcRTH+e0+dpUm1xV46KWNhB6UiUU/K0Sp8FIQFQlNGDnrtqRtxm6a FZElmpXKVDK1UJNI2RrqKlMribUyKx3UfMC02YvQHlZqMpPM613lf5/z+H7POXAYQumm5jMp xqO8yajVq+hAsvGJz7VqZdOkZo3jLoW9FdkIN5TWUbhn9COFK52dFHaPDdP48gM7jYu8ZhK7 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201P X-CMS-RootMailID: 20191220120146eucas1p22a7b0457be4f378b113f67dc25f2eba7 References: <20191220115653.6487-1-a.swigon@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191220_040149_575395_4AB65CD7 X-CRM114-Status: GOOD ( 18.17 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_MSPIKE_H3 RBL: Good reputation (+3) [210.118.77.12 listed in wl.mailspike.net] -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.12 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.0 RCVD_IN_MSPIKE_WL Mailspike good senders -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: b.zolnierkie@samsung.com, sw0312.kim@samsung.com, =?utf-8?b?QXJ0dXIgxZp3?= =?utf-8?b?aWdvxYQ=?= , krzk@kernel.org, inki.dae@samsung.com, cw00.choi@samsung.com, myungjoo.ham@samsung.com, leonard.crestez@nxp.com, georgi.djakov@linaro.org, Marek Szyprowski Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Marek Szyprowski This patch adds interconnect support to exynos-mixer. The mixer works the same as before when CONFIG_INTERCONNECT is 'n'. Co-developed-by: Artur Świgoń Signed-off-by: Artur Świgoń Signed-off-by: Marek Szyprowski --- drivers/gpu/drm/exynos/exynos_mixer.c | 71 +++++++++++++++++++++++++-- 1 file changed, 66 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 6cfdb95fef2f..a7e7240a055f 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -97,6 +98,7 @@ struct mixer_context { struct exynos_drm_crtc *crtc; struct exynos_drm_plane planes[MIXER_WIN_NR]; unsigned long flags; + struct icc_path *soc_path; int irq; void __iomem *mixer_regs; @@ -931,6 +933,40 @@ static void mixer_disable_vblank(struct exynos_drm_crtc *crtc) mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC); } +static void mixer_set_memory_bandwidth(struct exynos_drm_crtc *crtc) +{ + struct drm_display_mode *mode = &crtc->base.state->adjusted_mode; + struct mixer_context *ctx = crtc->ctx; + unsigned long bw, bandwidth = 0; + int i, j, sub; + + if (!ctx->soc_path) + return; + + for (i = 0; i < MIXER_WIN_NR; i++) { + struct drm_plane *plane = &ctx->planes[i].base; + const struct drm_format_info *format; + + if (plane->state && plane->state->crtc && plane->state->fb) { + format = plane->state->fb->format; + bw = mode->hdisplay * mode->vdisplay * + drm_mode_vrefresh(mode); + if (mode->flags & DRM_MODE_FLAG_INTERLACE) + bw /= 2; + for (j = 0; j < format->num_planes; j++) { + sub = j ? (format->vsub * format->hsub) : 1; + bandwidth += format->cpp[j] * bw / sub; + } + } + } + + /* add 20% safety margin */ + bandwidth = bandwidth / 4 * 5; + + dev_dbg(ctx->dev, "exynos-mixer: safe bandwidth %ld Bps\n", bandwidth); + icc_set_bw(ctx->soc_path, Bps_to_icc(bandwidth), 0); +} + static void mixer_atomic_begin(struct exynos_drm_crtc *crtc) { struct mixer_context *ctx = crtc->ctx; @@ -982,6 +1018,7 @@ static void mixer_atomic_flush(struct exynos_drm_crtc *crtc) if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags)) return; + mixer_set_memory_bandwidth(crtc); mixer_enable_sync(mixer_ctx); exynos_crtc_handle_event(crtc); } @@ -1029,6 +1066,7 @@ static void mixer_disable(struct exynos_drm_crtc *crtc) for (i = 0; i < MIXER_WIN_NR; i++) mixer_disable_plane(crtc, &ctx->planes[i]); + mixer_set_memory_bandwidth(crtc); exynos_drm_pipe_clk_enable(crtc, false); pm_runtime_put(ctx->dev); @@ -1220,12 +1258,22 @@ static int mixer_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; const struct mixer_drv_data *drv; struct mixer_context *ctx; + struct icc_path *path; int ret; + /* + * Returns NULL if CONFIG_INTERCONNECT is disabled. + * May return ERR_PTR(-EPROBE_DEFER). + */ + path = of_icc_get(dev, NULL); + if (IS_ERR(path)) + return PTR_ERR(path); + ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) { DRM_DEV_ERROR(dev, "failed to alloc mixer context.\n"); - return -ENOMEM; + ret = -ENOMEM; + goto err; } drv = of_device_get_match_data(dev); @@ -1233,6 +1281,7 @@ static int mixer_probe(struct platform_device *pdev) ctx->pdev = pdev; ctx->dev = dev; ctx->mxr_ver = drv->version; + ctx->soc_path = path; if (drv->is_vp_enabled) __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags); @@ -1242,17 +1291,29 @@ static int mixer_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ctx); ret = component_add(&pdev->dev, &mixer_component_ops); - if (!ret) - pm_runtime_enable(dev); + if (ret < 0) + goto err; + + pm_runtime_enable(dev); + + return 0; + +err: + icc_put(path); return ret; } static int mixer_remove(struct platform_device *pdev) { - pm_runtime_disable(&pdev->dev); + struct device *dev = &pdev->dev; + struct mixer_context *ctx = dev_get_drvdata(dev); + + pm_runtime_disable(dev); + + component_del(dev, &mixer_component_ops); - component_del(&pdev->dev, &mixer_component_ops); + icc_put(ctx->soc_path); return 0; }