From patchwork Fri Dec 20 11:56:47 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: 11305287 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 1EB01138D for ; Fri, 20 Dec 2019 12:02:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E76C424679 for ; Fri, 20 Dec 2019 12:02:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="OE5Wz3qN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727327AbfLTMBp (ORCPT ); Fri, 20 Dec 2019 07:01:45 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:36382 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727276AbfLTMBp (ORCPT ); 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Fri, 20 Dec 2019 12:01:40 +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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.org Subject: [RFC PATCH v3 1/7] interconnect: Export of_icc_get_from_provider() Date: Fri, 20 Dec 2019 12:56:47 +0100 Message-Id: <20191220115653.6487-2-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: H4sIAAAAAAAAA01Sa0hTYRjm27lqTo5T8KWL0cqiTO0i8UkXEiQO+acgAq1lSw9qObUdteyP lzK8VIqRlxVqaWmuUmeaDhMbyxmZiy4rUFNKSYWUcgmaaG5nXf497/O8z/u878fHEgobtZJN SEoVtEnqRCXtTrb1zFkDN7YvqLZ1XGLxcGUuws3ljRT+YP9K4SpzP4Xf/ZymcdlTA41LhotJ bLU2Mbh+6DuFDV9sFH5rvEXjmatmhMutXTL80DzE4IHsehqXX5+g93O8oSGf5gdtnTQ/XGiR 8S21mXzzVLuMv/a4AfEzBr9DTJT7nlghMSFd0AbvO+ke3z6qp1JaufNXvr5mslCOZwFyY4EL gRH9PFGA3FkFV49AVzNHSoUdQdWnalcxg6A7t4j8Y7GUvHAJdQiKHtwn/lp6O3NpRxfNhUHJ jRHGIfhwZgTXq6edFoK7JYO8/DrnLG8uAnRzo4QDk5w/6LpeMg4s5zB05NoJKW8t6Ju6ndiN C4WP798QUo8XvKgYdc4hlnsutt50rgHcdwaarIWMZA6HqW/dSMLeMGl57OJXw1JHlUzCIox1 DFOSOQuB4Z7ZlbwbBvvnl+9hlxM2Q6MxWKLDoKDyOemggfOEj9+8pB08oaStjJBoOeRdVkhQ CcYK12MD5Ohtrtk8ZPWMUMVone6/Y3T/HaP7F1uNiAbkK6SJmjhB3JEknAsS1RoxLSkuKCZZ Y0DLv+3losXejowLp0yIY5HSQz4e80uloNTpYobGhIAllD7ygbw5lUIeq864IGiTo7VpiYJo QqtYUukr33lnQqXg4tSpwhlBSBG0f1QZ67YyC5EHSm+ELkW0FFypWjNdU1t3+jZ/dNKHqjke ebcvu3QgIKQ0W7WrxRbT45XgvylA5UFF3SaCTkSPawbOi+uPeBFlpp1H/fYefrYq88nU1iL1 h0DdodnwyLQf5SsKmbNNwZUHczaMnbTNvppcnO+Nx5+PDeELer7H1GZ45FuXoeizK0kxXr19 C6EV1b8BvDpsi2kDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrJIsWRmVeSWpSXmKPExsVy+t/xe7qqO/7EGjSt17O4P6+V0WLjjPWs Fte/PGe1mH/kHKvFla/v2Sym793EZjHp/gQWi/PnN7BbrLj7kdVi0+NrrBaXd81hs/jce4TR Ysb5fUwWa4/cZbe43biCzWLG5JdsDgIem1Z1snncubaHzeN+93Emj81L6j02vtvB5NG3ZRWj x+dNcgHsUXo2RfmlJakKGfnFJbZK0YYWRnqGlhZ6RiaWeobG5rFWRqZK+nY2Kak5mWWpRfp2 CXoZO56sZi3YKlDR8/wCewNjE18XIyeHhICJxPFJJ1lAbCGBpYwSDx7VQMQlJD6uv8EKYQtL /LnWxdbFyAVU84lRoutCJxtIgk3AUWLS1AfsIAkRgVOMEluXnwNLMAusYJLonyMMYgsLeEvM +vmEGcRmEVCVmLXvNDuIzStgIbGz9QszxAZ5idUbDoDZnAKWEjeuXmKGuAio5nMfE0S9oMTJ mU+ALuUAmq8usX6eEMQqeYnmrbOZJzAKzkJSNQuhahaSqgWMzKsYRVJLi3PTc4uN9IoTc4tL 89L1kvNzNzECo3XbsZ9bdjB2vQs+xCjAwajEw+uQ9jtWiDWxrLgy9xCjBAezkgjv7Y6fsUK8 KYmVValF+fFFpTmpxYcYTYFem8gsJZqcD0wkeSXxhqaG5haWhubG5sZmFkrivB0CB2OEBNIT S1KzU1MLUotg+pg4OKUaGFNMDrwzl2WamDZ/geBdq6Q36xpeX/dXtNdOehB7SnHC0ZPZi8y3 TJ0kbPfU5GNWvUyTdL/mhu0yj5d8PrD5tG+vaco0zxfh6w3Pr+k71Lv7r/3h8/5OpRI9G9QD nrg7xvE2fI5PP74kZVXsjAZr7h6JB7GyQsXv88xiv6Y8Pn/4olrw6SoFYyWW4oxEQy3mouJE AIoeLovsAgAA X-CMS-MailID: 20191220120141eucas1p11f5fa9d76d17e80e06199cb7a911c482 X-Msg-Generator: CA X-RootMTR: 20191220120141eucas1p11f5fa9d76d17e80e06199cb7a911c482 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120141eucas1p11f5fa9d76d17e80e06199cb7a911c482 References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= X-Patchwork-Id: 11305291 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 909F8138D for ; Fri, 20 Dec 2019 12:02:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E21C24679 for ; 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bh=PQklDJqR/G6046e9NnfXXWwzMEr/Gk3W/jdjCm+h/+Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K3P5ULxmMoUdKXz/BOCOK3/CSXGX0hHreWRDT/UZBvtFy4YLrZzfreJ/Ob8HvBGi/ AH37qqH02KibFeByDSLRqlmBkDGoZ4vLyb1ABS5+hsaZDJg0MNl59uxQ5zuF1F5hPw u6RX1PYdC/bMSIl/PRxC+tsDPS/mixxG/wm0PMSE= Received: from eusmges1new.samsung.com (unknown [203.254.199.242]) by eucas1p1.samsung.com (KnoxPortal) with ESMTP id 20191220120143eucas1p17aa32b17eca0ed2bc744c6b98950424e~iEqE6wuLk1903419034eucas1p1S; Fri, 20 Dec 2019 12:01:43 +0000 (GMT) Received: from eucas1p2.samsung.com ( [182.198.249.207]) by eusmges1new.samsung.com (EUCPMTA) with SMTP id 2E.FE.61286.728BCFD5; 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 20191220120142eucas1p1f43c7a862d9c0faa72e14b21d7d697e9~iEqEeIr4u1904419044eucas1p1M; Fri, 20 Dec 2019 12:01:42 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.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> 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+Hc2uy+poLxpU9FSx4CeFGImsIogiKENq1s1ZPmpXe0H4 iGqammmhTkvtoaKJbT6aUhFzpb20VqmlsvKRuDAr3R9aal5vWf99zznfz3nAYQllC+XJhkfF 8LooTYSKlpM1T0aaVy8z/wrxrhljsf36OYSN2RUUbh3uo3C+tYnCb52DNM56YKJxhj2dxM3N dxlc0vmdwqbuFgq/qcuj8VCqFeHs5ocyXG7tZHB7QgmNszP76QBObSpNotUdLfdptf1ig0xd eStObfxqlqnTqkqResi0cDsTLN9wkI8IP87rvPz3y7VXLA7yaDpz0n6vg4xHiXQycmGBWwuG Lj1KRnJWyZUgsL7sJ6RgGEGhs5yWgiEEQ1e7ppHCRpNMKhQj6O4YkE0jH8puU6KL5jZCxtWP jFhw56wIMgsGSTEguDwZ6JOKSdE1i9sLRpuRETXJLYHaxzlTtILDkJIkriXOWwRldx8Ronbh /KDtnY2QPG7wNKdnqg8x6TlbnTu1OXBOBlrH6gkJDoQL1amkpGeBo6GKkfR8mKjNl0lagN5a OyXB8QhMRdY/8HroaBqdvJqdnLAcKuq8pPRG6PziYMQ0cK7QNuAm7eAKGTVZhJRWgP68UpIq qMtxlUCAxLKWP73V0Jd4mUpHiw3/HWP47xjDv7EFiChFc/lYITKMF3yi+BNrBE2kEBsVtuZA dKQJTX7b8/GGH2bktIVaEMci1QxFwKGfIUpKc1w4FWlBwBIqd0W7fiREqTioOXWa10Xv08VG 8IIFzWNJ1VyF743+ECUXponhj/D8UV73typjXTzj0RZ5230L3Ak6rJ3I8CsNthmPrZxQ8h53 9niFjsc+KU+67Kj0n7Mpl/wc81E/e7T31beEnrbMM3He/W+9s599KvLZPLJA6xHW+lAI9X3t pA4F3TOnmV8ErrLB7p0p7jtuXiK7A+u3vV/o2GU4UbN6qy+/DhW1VxhnLq26xtc2+mgbVaSg 1fisIHSC5jcKXt4iaQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrJIsWRmVeSWpSXmKPExsVy+t/xe7pqO/7EGjzdp2pxf14ro8XGGetZ La5/ec5qMf/IOVaLK1/fs1lM37uJzWLS/QksFufPb2C3WHH3I6vFpsfXWC0u75rDZvG59wij xYzz+5gs1h65y25xu3EFm8WMyS/ZHAQ8Nq3qZPO4c20Pm8f97uNMHpuX1HtsfLeDyaNvyypG j8+b5ALYo/RsivJLS1IVMvKLS2yVog0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/Tt EvQyphx6xVIwgb3i/vY7LA2MTWxdjJwcEgImEgtPbGLqYuTiEBJYyijx4fEndoiEhMTH9TdY IWxhiT/Xutggij4xSlzcepEFJMEm4CgxaeoDdpCEiMApRomty8+BjWUWWMEk0T9HuIuRg0NY IFJixjFOkDCLgKrEzqMzwYbyClhI9HR2MEIskJdYveEAM4jNKWApcePqJTBbCKhm5+c+Joh6 QYmTM5+wgIxkFlCXWD9PCGKTvETz1tnMExgFZyGpmoVQNQtJ1QJG5lWMIqmlxbnpucVGesWJ ucWleel6yfm5mxiB0brt2M8tOxi73gUfYhTgYFTi4XVI+x0rxJpYVlyZe4hRgoNZSYT3dsfP WCHelMTKqtSi/Pii0pzU4kOMpkCvTWSWEk3OByaSvJJ4Q1NDcwtLQ3Njc2MzCyVx3g6BgzFC AumJJanZqakFqUUwfUwcnFINjNsZlmubZ7td/ePXn5WeNmOj3fuixkWlufJOU5/ZXL0p9979 vOO7mgePPlkY1ai8a5nybpH4mdW5DaGrPyqbMp3WnbvTb8KqFxOOrVSZtaF9Rq+Y+1GLV19N 7ZXPxKZstC6vlz6ckxLfsOXOFv6L58q+2ob8+2MmVyfQIFZwylOPqXmBpt3iX0osxRmJhlrM RcWJAMrn8RrsAgAA X-CMS-MailID: 20191220120142eucas1p1f43c7a862d9c0faa72e14b21d7d697e9 X-Msg-Generator: CA X-RootMTR: 20191220120142eucas1p1f43c7a862d9c0faa72e14b21d7d697e9 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120142eucas1p1f43c7a862d9c0faa72e14b21d7d697e9 References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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: 11305289 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 66A05138D for ; Fri, 20 Dec 2019 12:02:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A34D24686 for ; 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bh=s4kRbuQ3Hb8eo8oQqLWyy6KxuzGwfImAAZepS0JGEVw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C7YGZZ9X3oOkC9IHHnryqxDrUlNIjbhS+5eSAI9R46gjfuKmFJJqkq/ADaBJkIEUK 9IzI92N9KY3JCYvRKV3+rRx1C0DrEB7fjifa0pY91BSlw8eoRg/yFksNREB3N6jHMO mi0bVbW4BOTAWR7zbsiGxxTcfVqEvCdRP7hbZ65M= Received: from eusmges3new.samsung.com (unknown [203.254.199.245]) 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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.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 I8Wn0jNZbboyTUFJhZ3Pph3rVnX5kzY6LRh7bhYi3FrZTOJ3k14S37I5SPxm6huFDY/NFNZ7 yoW4r69FhBuGvpPYPOoicb+lmsITZTaEK/u6BfiebUiEB/IbKFxZMU7F04zZVEwxg65HFOMp tQuYtroLTOvXLgFzpd2EmAnz8v2iw9LYFDbtVDar3RB3XKoq7C2iTt+JOPPTWk3moRa6BEnE QG+BmqYeKshyugFB4+XVPE8ieNe7twRJAzyBwOW6JJo3dLZ2iPhGPQJTswH9dRQ9lAaZohNA f3U4JIqgbQgqbn8TBh8EXS0AXXG9MKgKpw/BeM2XEAvplfD4SW1oDhmNoarVTfFxUdDY0ksE WUJvBfdbJ8FrFsLz6x9DXiKgKeioIoIBQE+JQFdrJ3lzIhhmRhDP4fDZ3v5nh6Xw68EtAc8c jD3wkLw5D4H5ro3gG9th0DETmEIcSFgDzZYNfDkBHK58UbAMdBi4fQv5GcJA32kg+LIMdEVy HhVguR7GGwEuNrr+/M1Apc2IytEK43/LGP9bxvgv9jYiTGgxm8VpUlluczqbs55Taris9NT1 yRkaMwqc2os5+1QX6vafsCJajBQLZPEnZ5PkpDKby9VYEYgJRYRsQDedJJelKHPPstqMY9qs NJazoiVioWKxbHPteJKcTlVmsmqWPc1q57sCsSQyD2V4o/w73QVl9w/cHRmJO+hz1znvvbZ9 6Xz5vHh3GErO8ZvWDvtKb/Rf23XuqPepZXSqeU/kud0bf8yu0nuzPlgPH6GSU+qqdLHl25ZJ nvWo7F/3VbXlNKli/D1qa7exfSCGXpDIjM3FIHX7q/evfQnRn87ueLLomM9xfjjaWaNmFEJO pdwUTWg55W8CpCNgZgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrJIsWRmVeSWpSXmKPExsVy+t/xe7rqO/7EGrTvkrK4P6+V0WLjjPWs Fte/PGe1mH/kHKvFla/v2Sym793EZjHp/gQWi/PnN7BbrLj7kdVi0+NrrBaXd81hs/jce4TR Ysb5fUwWa4/cZbe43biCzWLG5JdsDgIem1Z1snncubaHzeN+93Emj81L6j02vtvB5NG3ZRWj x+dNcgHsUXo2RfmlJakKGfnFJbZK0YYWRnqGlhZ6RiaWeobG5rFWRqZK+nY2Kak5mWWpRfp2 CXoZrQfa2AoWi1T8ODSHtYFxg0AXIyeHhICJxLaNW9m7GLk4hASWMkocurOJESIhIfFx/Q1W CFtY4s+1LjaIok+MEn29S9hBEmwCjhKTpj4A6xYROMUosXX5OTaQBLPACiaJ/jnCXYwcHMIC oRIr25NAwiwCqhJ7Dy4CK+EVsJCYvfEGG8QCeYnVGw4wg9icApYSN65eArOFgGp2fu5jgqgX lDg58wkLyEhmAXWJ9fOEIDbJSzRvnc08gVFwFpKqWQhVs5BULWBkXsUoklpanJueW2ykV5yY W1yal66XnJ+7iREYrduO/dyyg7HrXfAhRgEORiUeXoe037FCrIllxZW5hxglOJiVRHhvd/yM FeJNSaysSi3Kjy8qzUktPsRoCvTaRGYp0eR8YCLJK4k3NDU0t7A0NDc2NzazUBLn7RA4GCMk kJ5YkpqdmlqQWgTTx8TBKdXA6KN24Oe94n9n305TaP6lvKi+e70Mm4/mpg/Z6guurRBk6eWb 9kfy0Zfej9bqX3M+z55i/HnVinK5O9rdD73LMz5m3T34PyQrhVFwaq2Um0vrq2sXXbIt1X8+ fXy+SfpFwp54mT+/tojcFejuejk5I6b1bbQFh/80e9Ed917fLXyWtORD301uQyWW4oxEQy3m ouJEAA8iFKbsAgAA X-CMS-MailID: 20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f X-Msg-Generator: CA X-RootMTR: 20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120143eucas1p1c9b01ae8c2e4ecd70423ef9d8001536f References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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: 11305285 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 3157613A4 for ; 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Fri, 20 Dec 2019 12:01:44 +0000 (GMT) X-AuditID: cbfec7f4-0cbff7000001ed07-1f-5dfcb8282389 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 12.68.07950.828BCFD5; Fri, 20 Dec 2019 12:01:44 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191220120143eusmtip2bbaceb996ba95413eafb3782203260f7~iEqFKOe_R2848028480eusmtip2d; 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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.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> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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 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: 11305275 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 582CE13A4 for ; Fri, 20 Dec 2019 12:02:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2312724680 for ; Fri, 20 Dec 2019 12:02:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="tRCnruzb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727464AbfLTMBr (ORCPT ); Fri, 20 Dec 2019 07:01:47 -0500 Received: from mailout2.w1.samsung.com ([210.118.77.12]:60552 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727452AbfLTMBr (ORCPT ); Fri, 20 Dec 2019 07:01:47 -0500 Received: from eucas1p1.samsung.com (unknown [182.198.249.206]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20191220120145euoutp02da21028f01b93a736640dea9c5eef211~iEqHXTqzQ0140301403euoutp02D for ; 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Fri, 20 Dec 2019 12:01:45 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20191220120145eusmtrp2bddf4a83107f924dccfe910146f1c3a1~iEqGtG9RP2149221492eusmtrp2y; Fri, 20 Dec 2019 12:01:45 +0000 (GMT) X-AuditID: cbfec7f5-a0fff7000001ed1a-4b-5dfcb82996b3 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id B5.87.08375.928BCFD5; Fri, 20 Dec 2019 12:01:45 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20191220120144eusmtip2b8b1a1fa0c24155f199d95970587d722~iEqF9D0FK3105631056eusmtip2a; Fri, 20 Dec 2019 12:01:44 +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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.org Subject: [RFC PATCH v3 5/7] devfreq: exynos-bus: Add interconnect functionality to exynos-bus Date: Fri, 20 Dec 2019 12:56:51 +0100 Message-Id: <20191220115653.6487-6-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: H4sIAAAAAAAAA01SfUyMcRzf73nuee7p6vJ0aX1F4pq1whX54ydmtbEdNjNjrEkdPdJ0l91T kT84jlTnpWWtK72RVcuMHrFqhNxqybrp9Titoogh7aoJQ0/Pmf77fH+fl+/Lfgyp6qICmGRD Gmc06FLUtEL2oHXGvjq04VdcRN73QDxYdh7hOusdCvdPfqBwua2Twj1T4zQufCTQOH8wT4bt 9rtyXDMwQWHhXR+Fu5tKaOy6ZEPYam8m8G3bgBw7z9TQ2Hr1Ix3NaoXaHFr7pu8hrR20tBHa ezdPa+u+NhDay/W1SOsSlu6Uxyo2JnIpyRmcMXxTguKIc8xJH/sdfuLKswnahKpCchHDALsO vrzYk4sUjIqtQdD9uYbKRR6zxSSCOsd+iXAhuPzos0wkRIOQbSIkohpB/Wvrf0dFwRYR02wM 5BcMyUXRQtaG4GrFuEwsSLaEgOyc6rkoXzYeJp8Mzbll7Aq4br9IiFjJYjCPNMqldkFw6+4T UsQe7Hpw9HaRksYH2otG5nLIWY35/jVS0k/JofL+Pglvhvz2T+4cX/jUVu/GS+BPYzkhYR5G GwcpcThgTQiEKps7aAO86fxBi0ci2VC40xQuPcdAq9Atl27nDY4vPtII3pD/oJCUnpWQnaWS oBqairwlI8DZW33ubC30z0wQeWh58bxdiuftUvy/bQUia5E/l87rkzg+0sAd1/A6PZ9uSNIc StULaPandfxum2pAzb8OtiCWQWovZfThn3EqSpfBZ+pbEDCkeqHSmT0Tp1Im6jJPcsbUeGN6 Cse3oMWMTO2vjLzxMU7FJunSuKMcd4wz/mMJxiPAhErSO8YOdCx67OIDB5Lfvgo3h7pYRdlw 5alz0zvMWVaf0TIvv7U9+54b6Mis2AWeK59GFFxYui3W0zIx0lWoVx0yhQRZxr8FO8KG+V3L LIUnhKTSK+UtxgIiRvNyaImfZqv5euaqKH1KUakm+D0zk0AGTpuigtjenr15W6JvbN+tlvFH dGvCSCOv+wsmu2svZQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrFIsWRmVeSWpSXmKPExsVy+t/xe7qaO/7EGiw9xGZxf14ro8XGGetZ La5/ec5qMf/IOVaLK1/fs1lM37uJzWLS/QksFufPb2C3WHH3I6vFpsfXWC0u75rDZvG59wij xYzz+5gs1h65y25xu3EFm8WMyS/ZHAQ8Nq3qZPO4c20Pm8f97uNMHpuX1HtsfLeDyaNvyypG j8+b5ALYo/RsivJLS1IVMvKLS2yVog0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/Tt EvQybr+4zVbwT7+i//BHtgbGZepdjJwcEgImEps6Gpi6GLk4hASWMkp8vXaRCSIhIfFx/Q1W CFtY4s+1LjaIok+MEnff3mAGSbAJOEpMmvqAHSQhInCKUWLr8nNsIAlmgRVMEv1zhEFsYYFY iZ7l68EmsQioSiw83wO2gVfAQqL5yU52iA3yEqs3HAAbyilgKXHj6iUwWwioZufnPqh6QYmT M5+wdDFyAM1Xl1g/TwhilbxE89bZzBMYBWchqZqFUDULSdUCRuZVjCKppcW56bnFhnrFibnF pXnpesn5uZsYgfG67djPzTsYL20MPsQowMGoxMP7Mvl3rBBrYllxZe4hRgkOZiUR3tsdP2OF eFMSK6tSi/Lji0pzUosPMZoCvTaRWUo0OR+YSvJK4g1NDc0tLA3Njc2NzSyUxHk7BA7GCAmk J5akZqemFqQWwfQxcXBKNTDOfa7uftNQeXXJrxMce0Wk+Dc7Hv9cf2xFqufltQuj7/zITJdx MxML+3xxnvqRvn0buNKvTLu1yOTbz61MKp+uPzZ73JUV13v1r0yP/5n3NhemymXfr+2Nvrfr z/XF+acSpnxJKNzYYbFC6CXT+g26/xNO7VD1tP9YU3EmvVDO2zZXNjMn/XCZEktxRqKhFnNR cSIAfK1wku0CAAA= X-CMS-MailID: 20191220120145eucas1p295af63eed7b23982d8c49fcf875cec8c X-Msg-Generator: CA X-RootMTR: 20191220120145eucas1p295af63eed7b23982d8c49fcf875cec8c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120145eucas1p295af63eed7b23982d8c49fcf875cec8c References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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: 11305273 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 BF3C4138D for ; Fri, 20 Dec 2019 12:02:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93C5624679 for ; Fri, 20 Dec 2019 12:02:02 +0000 (UTC) Authentication-Results: mail.kernel.org; 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b=geNABEjIaOFXEsDfuCtb/8bRiOyRzMqgb1u7bFO99PqV24v/4xhZrvWo2wynGp1Qw 80zQ1+esXMPoAXbVUhdyyN24TfbCOAQ9UG2avn2aW4IY+Ozjci3Snw+AKppMmhaMat otrXz1NBJ/JcOC57Y+pBBtYIGEswYPy+hUahdpig= Received: from eusmges1new.samsung.com (unknown [203.254.199.242]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20191220120146eucas1p277fcbaeb4927a426027d863a1b7fa318~iEqH5oQwq2774727747eucas1p2M; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) Received: from eucas1p2.samsung.com ( [182.198.249.207]) by eusmges1new.samsung.com (EUCPMTA) with SMTP id C0.0F.61286.A28BCFD5; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) Received: from eusmtrp2.samsung.com (unknown [182.198.249.139]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20191220120146eucas1p25dada01c315215d18bb8a15e3173b52c~iEqHkkr5b2771427714eucas1p2-; 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 20191220120146eusmtrp20bd7f72940e3e4eec57c60e3327bbce1~iEqHj4j7s2149221492eusmtrp22; Fri, 20 Dec 2019 12:01:46 +0000 (GMT) X-AuditID: cbfec7f2-f0bff7000001ef66-e4-5dfcb82a814a Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 07.87.08375.928BCFD5; Fri, 20 Dec 2019 12:01:45 +0000 (GMT) Received: from AMDC3555.digital.local (unknown [106.120.51.67]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 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 Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, m.szyprowski@samsung.com, b.zolnierkie@samsung.com, krzk@kernel.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 f3DnHN8y1ibjTQ8bED9pjdGwScFb04TMo7mCYf22w8EZYzfPnbjCnh69Wk0VIA99EQVxgDdC /1szcxEFc0pcj6B53sb6CCX+hWCiPEwiJhE0vrzM/HU4Gl7QElGHoKd4jpUKr8PU0irzqRi8 HSqufvAT4diBoLJ2XO4rKHxDBsYLdXKfKgwnwsfnZn+uHK+GoY7nfrcCE3AOlrPSvBVwr7mD 8uEgvBkG3vVSkiYUXNVf/DmUV1P86Dol6SdYcNVFSngntBZVBfYOg2/Oh4HMZfC7vUYmYRG+ tg/77wFcgMB61xEI2gJD3bNeM+cdsAaa7Oul9nYoLXGyvjbgEBj4ESqtEAIVtipKaivAWKqU oArs1SGSEaDoXl8gm4eerjKqHMVa/rvF8t8tln9jaxHVgCKFHDErXRDj9MIptajLEnP06erU 41lW5H21Lo/zZxua6k3pRJhDqiWKhCNzWiWtyxXzsjoRcJQqXDFonNEqFWm6vDOC4XiyISdT EDtRNCdXRSrib49qlThdly0cE4QTguEvK+OCogrQPvX+V1Mjy62HVtl25KhnM/IbYyL2FmtS 53BE/qJDqaUHdimeJR48nN+x2yTGxyZdN5bONZmi6bMxffsKPZ+slXuuBeUyHlOiY2GhO1s/ zy62c7dW9n5HlugrS3uVo/xNTb0rLXlT9HiKe7qmsOxkf1zbrqfnn00/0eCyrtcJLpVczNDF raUMou4PvSE3m2YDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrBIsWRmVeSWpSXmKPExsVy+t/xe7qaO/7EGqzdaG1xf14ro8XGGetZ La5/ec5qMf/IOVaLK1/fs1lM37uJzWLS/QksFufPb2C3WHH3I6vFpsfXWC0u75rDZvG59wij xYzz+5gs1h65y25xu3EFm8WMyS/ZHAQ8Nq3qZPO4c20Pm8f97uNMHpuX1HtsfLeDyaNvyypG j8+b5ALYo/RsivJLS1IVMvKLS2yVog0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/Tt EvQy3s2tL5jCXvFy6kzmBsZ/rF2MnBwSAiYSR1YdA7OFBJYySnzpL4WIS0h8XH8DqkZY4s+1 LrYuRi6gmk+MEocn9rCDJNgEHCUmTX3ADpIQETjFKLF1+Tk2kASzwAomif45wiC2sECwxPSu V2ANLAKqEncOHGUCsXkFLCSO357ADrFBXmL1hgPMIDangKXEjauXmCEuspDY+bkPql5Q4uTM JyxdjBxA89Ul1s8TglglL9G8dTbzBEbBWUiqZiFUzUJStYCReRWjSGppcW56brGhXnFibnFp Xrpecn7uJkZgrG479nPzDsZLG4MPMQpwMCrx8L5M/h0rxJpYVlyZe4hRgoNZSYT3dsfPWCHe lMTKqtSi/Pii0pzU4kOMpkCvTWSWEk3OB6aRvJJ4Q1NDcwtLQ3Njc2MzCyVx3g6BgzFCAumJ JanZqakFqUUwfUwcnFINjKZ768qWXluQvDj27Swrkbxn0V89eDo1zCMa1rnIlF7h6QqUOdT6 eXrF/jxdSYOTUueNZW2zw5UfMm0sPtHinflGJPCT9dMn+RyvG/gDznk1/y3Y/fdvQN7Nlx/y m+dzSf3sv9o292XX+XSNfz8PekwV6vt26abywanKQlIf35lkZa9Oy7oqrMRSnJFoqMVcVJwI ADa+5O7rAgAA X-CMS-MailID: 20191220120146eucas1p25dada01c315215d18bb8a15e3173b52c X-Msg-Generator: CA X-RootMTR: 20191220120146eucas1p25dada01c315215d18bb8a15e3173b52c X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120146eucas1p25dada01c315215d18bb8a15e3173b52c References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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: 11305267 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 54A5613A4 for ; Fri, 20 Dec 2019 12:01:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2924124687 for ; 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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 Cc: Marek Szyprowski , cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, leonard.crestez@nxp.com, b.zolnierkie@samsung.com, krzk@kernel.org, =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= 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 XPVyXNv/ncL2d90UftVylcYj+U6ES12tMmxz9sux50wtjUuLB+lYlrNbztNcX/d9mvNebJNx t66f5hq+Nsm4gtsWxI3YF++UJwZuOsDrU9J5U0RMUuAhX+kn6kjh0owXLQPyTORedAEFMMCu haq8KvoCCmSUbC0CS9cgIQWjCBwT7f5gBMG17Gfyv5LcjlFKZCVbg8BmVv9TlDwaJ8QCzcZB 0aUBuViYxzoRFFcNk2JAsHUy+OapmJHPZTl42uWjRSbZcOjpHUAiK1gM3x9Wy6RxoWCtfzjj GsBGQ2/XS0LqCYb2svekyMR0T9adK4TUPyaHfFeCxFsg9/5jUuK5MNR223/CQphqrvT7C/Ch 2UuJywGbicB+w+k32gh9nRPTyzHTA5ZDXUuElI6Dz64GSkwDGwS9X4KlFYKgqPEyIaUVkJuj lFAFLWVBkhDgrLXb781Bta1AbkZLymfdUj7rlvL/Y6sQYUEhfJpg0PFClJE/tlrQGoQ0o271 /lSDHU3/2vPfbWNNqHUy2YFYBqnmKGIP/tIoKW26cNzgQMAQqnkKT65Po1Qc0B4/wZtS95nS 9LzgQAsYUhWiiKoe1ChZnfYof5jnj/Cmv1UZEzA/E9WGb9uxbKs6rIC0xB+cWv9unVtnTldz yT+ZN9GOvZoFm5OjdM1pkcvuxWZeq1+zYbstsiRc6PnU0Tiwxb5e88PafrJ4uFDvzjsZfe41 kZFAdpFDZdV7YpJ29X+d3H1TnXPibfhQ/sbU0MTxvhq7z2vSWeui48mSxoxTWTwf5rmrIoVD 2sgVhEnQ/gF6ItAIZwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrNIsWRmVeSWpSXmKPExsVy+t/xe7paO/7EGmzaZ2Bxf14ro8XGGetZ La5/ec5qMf/IOVaLK1/fs1lM37uJzWLS/QksFufPb2C3WHH3I6vFpsfXWC0u75rDZvG59wij xYzz+5gs1h65y25xu3EFm8WMyS/ZHAQ8Nq3qZPO4c20Pm8f97uNMHpuX1HtsfLeDyaNvyypG j8+b5ALYo/RsivJLS1IVMvKLS2yVog0tjPQMLS30jEws9QyNzWOtjEyV9O1sUlJzMstSi/Tt EvQyfs54zVowUaXizK4H7A2MV2S7GDk5JARMJDrOfmHtYuTiEBJYyijx6uZbRoiEhMTH9TdY IWxhiT/Xutggij4xSnxeuIwFJMEm4CgxaeoDdpCEiMApRomty8+BVTEL7GaSWDlnP1iVsICH xImrP9lAbBYBVYnrNx6AreAVsJD4eGARE8QKeYnVGw4wg9icApYSN65eArOFgGp2fu5jgqgX lDg58wnQTA6gBeoS6+cJgYSZgVqbt85mnsAoOAtJ1SyEqllIqhYwMq9iFEktLc5Nzy021CtO zC0uzUvXS87P3cQIjNhtx35u3sF4aWPwIUYBDkYlHt6Xyb9jhVgTy4orcw8xSnAwK4nw3u74 GSvEm5JYWZValB9fVJqTWnyI0RTotYnMUqLJ+cBkklcSb2hqaG5haWhubG5sZqEkztshcDBG SCA9sSQ1OzW1ILUIpo+Jg1OqgdG6b5tdm4RQYu0bBk2rPH5u33LfL0c+vt4+/YwHo8WqR4K1 05U0wyysvhwJf65y+ZlLSVUZx42vL7Zv/rerRErjb5jwz0VTT1U9dGtv9T82uSclgGVKQXjP /1LGiVkLehmOsnnNVmHzL7hzdP51Th4DLsV0xwV5Ff9d5S3TzE48uTpBiPP4aiWW4oxEQy3m ouJEACpmbZnuAgAA X-CMS-MailID: 20191220120146eucas1p22a7b0457be4f378b113f67dc25f2eba7 X-Msg-Generator: CA X-RootMTR: 20191220120146eucas1p22a7b0457be4f378b113f67dc25f2eba7 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191220120146eucas1p22a7b0457be4f378b113f67dc25f2eba7 References: <20191220115653.6487-1-a.swigon@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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; }