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Thu, 16 Jan 2020 14:42:42 +0000 (GMT) From: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= To: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Cc: =?utf-8?b?QXJ0dXIgxZp3aWdvxYQ=?= , georgi.djakov@linaro.org, cw00.choi@samsung.com, b.zolnierkie@samsung.com, m.szyprowski@samsung.com, krzk@kernel.org Subject: [PATCH v4 3/3] interconnect: Allow inter-provider pairs to be configured Date: Thu, 16 Jan 2020 15:42:02 +0100 Message-Id: <20200116144202.12116-4-a.swigon@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200116144202.12116-1-a.swigon@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprLKsWRmVeSWpSXmKPExsWy7djP87rJZQpxBh/ui1jcn9fKaLFxxnpW i+tfnrNaTN+7ic3i/PkN7BaXd81hs/jce4TRYsb5fUwWa4/cZXfg9Ni0qpPN4861PWwefVtW MXp83iQXwBLFZZOSmpNZllqkb5fAlTHl4W7mgkMiFQ+mLWZqYDwp0MXIwSEhYCKxbKpEFyMn h5DACkaJ5jv5XYxcQPYXRom9e2YyQTifGSUmLuxmhmmYe8QcIr6cUWLX6rNMcB0X729lBBnF JuAoMWnqA3YQW0QgXuLjtn8sIEXMAjsZJY78/cMEMklYIFii9YIYSA2LgKrEnsVHwHp5BSwl dk1vAuuVEJCXWL3hANhiTgEric+PVSFKBCVOznzCAmIzA5U0b53NDDJeQmAdu8S3hmagBDuQ 4yKxPgJiirDEq+NboCbKSJye3MMCYRdLPN15nxWitYFRYtOyI8wQCWuJO+d+sYGsZRbQlFi/ Sx8i7Cixb+t6Fkgw8EnceCsIcQGfxKRt06GhwyvR0SYEYSpJ7JrJB9EoIdG0+hrUbA+J9wc7 2SYwKs5C8sosJK/MQli7gJF5FaN4amlxbnpqsVFearlecWJucWleul5yfu4mRmCiOf3v+Jcd jLv+JB1iFOBgVOLhnRGkECfEmlhWXJl7iFGCg1lJhPfkDNk4Id6UxMqq1KL8+KLSnNTiQ4zS HCxK4rzGi17GCgmkJ5akZqemFqQWwWSZODilGhhlHeNFLKotv9T9XMIYcSerPsp8vrCc172n 6z799lR+0dvPpuzxb3Py4xWOs6SEdsXddP9016vCXMLl49ycA+enrQt8Gv1xWvyFcGNT7d9M 3u8/9JvuzDjcO6eyQUnLY88bx4lb5Y9su8t75em1Uy++zkr2fn2a++v9B4eL5l/J8alW+X8x ZrGlEktxRqKhFnNRcSIA+8imlzADAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrOIsWRmVeSWpSXmKPExsVy+t/xe7pJZQpxBt9/G1vcn9fKaLFxxnpW i+tfnrNaTN+7ic3i/PkN7BaXd81hs/jce4TRYsb5fUwWa4/cZXfg9Ni0qpPN4861PWwefVtW MXp83iQXwBKlZ1OUX1qSqpCRX1xiqxRtaGGkZ2hpoWdkYqlnaGwea2VkqqRvZ5OSmpNZllqk b5eglzHl4W7mgkMiFQ+mLWZqYDwp0MXIwSEhYCIx94h5FyMXh5DAUkaJySv3s3UxcgLFJSQ+ rr/BCmELS/y51sUGUfSJUeL9/vNgCTYBR4lJUx+wg9giAokStx49ZgYpYhbYzyjx8k4b2CRh gUCJzTsPgtksAqoSexYfYQSxeQUsJXZNb2KH2CAvsXrDAWaQizgFrCQ+P1YFCQsBldze2M0K US4ocXLmExaQEmYBdYn184RAwsxAnc1bZzNPYBSchaRqFkLVLCRVCxiZVzGKpJYW56bnFhvp FSfmFpfmpesl5+duYgRG0rZjP7fsYOx6F3yIUYCDUYmHd0aQQpwQa2JZcWXuIUYJDmYlEd6T M2TjhHhTEiurUovy44tKc1KLDzGaAn02kVlKNDkfGOV5JfGGpobmFpaG5sbmxmYWSuK8HQIH Y4QE0hNLUrNTUwtSi2D6mDg4pRoYI3d2/E7Ya91760jclcqwSfxrvNYVpYoKZEXmR98tLU/U /nTSVneBjdyMxbnMOVqx1ybdsPUuiW+NvNY047e8qK935aQH8x+bFB+R51Z+/n3vUZek6QZt nwR2PzyaoHX+ZET+/TOhGnY7bq7cuzeq6ATPPK3JK6oinmzKvcTR3r6zcs1eJ6UVSizFGYmG WsxFxYkALfUZGboCAAA= X-CMS-MailID: 20200116144242eucas1p1b66d8ca0d111f140c48b80c5064ca4ff X-Msg-Generator: CA X-RootMTR: 20200116144242eucas1p1b66d8ca0d111f140c48b80c5064ca4ff X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200116144242eucas1p1b66d8ca0d111f140c48b80c5064ca4ff References: <20200116144202.12116-1-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 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 by this change. This makes it easier for hierarchies like exynos-bus, where every bus is probed separately and registers a separate interconnect provider, to model constraints between buses (or between buses and DMC, handled by two separate drivers in case of Exynos5422). 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 5ea270af5ff4..caa9e35f06a3 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; };