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[68.111.223.48]) by smtp.gmail.com with ESMTPSA id q20sm9908719pgn.39.2016.12.02.14.03.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 02 Dec 2016 14:03:45 -0800 (PST) From: Bjorn Andersson To: Ohad Ben-Cohen , Bjorn Andersson Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v2 4/4] rpmsg: smd: Register rpmsg user space interface for edges Date: Fri, 2 Dec 2016 14:03:37 -0800 Message-Id: <1480716217-23303-4-git-send-email-bjorn.andersson@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1480716217-23303-1-git-send-email-bjorn.andersson@linaro.org> References: <1480716217-23303-1-git-send-email-bjorn.andersson@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Create and register a rpmsg device for use with the rpmsg user space interface, allowing user space to access SMD channels. Also provide the "rpmsg_name" device attribute to expose the edge name in sysfs, allowing the user to write udev rules for specific rpmsg devices and their children. Signed-off-by: Bjorn Andersson --- Changes since v1: - Moved rpmsg_name attribute to different patch drivers/rpmsg/qcom_smd.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) -- 2.5.0 diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 52c4ec570464..7552ef0e82ba 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -1002,6 +1002,20 @@ static int qcom_smd_create_device(struct qcom_smd_channel *channel) return rpmsg_register_device(rpdev); } +static int qcom_smd_create_chrdev(struct qcom_smd_edge *edge) +{ + struct qcom_smd_device *qsdev; + + qsdev = kzalloc(sizeof(*qsdev), GFP_KERNEL); + if (!qsdev) + return -ENOMEM; + + qsdev->edge = edge; + qsdev->rpdev.ops = &qcom_smd_device_ops; + qsdev->rpdev.dev.parent = &edge->dev; + return rpmsg_chrdev_register_device(&qsdev->rpdev); +} + /* * Allocate the qcom_smd_channel object for a newly found smd channel, * retrieving and validating the smem items involved. @@ -1357,6 +1371,12 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent, goto unregister_dev; } + ret = qcom_smd_create_chrdev(edge); + if (ret) { + dev_err(&edge->dev, "failed to register chrdev for edge\n"); + goto unregister_dev; + } + schedule_work(&edge->scan_work); return edge;