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soc: qcom: smd-rpm: Create RPM interconnect proxy child device 

Register a platform device to handle the communication of bus bandwidth
requests with the remote processor. The interconnect proxy device is part
of this remote processor (RPM) hardware. Let's create a icc-smd-rpm proxy
child device to represent the bus throughput functionality that is provided
by the RPM.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Georgi Djakov 2019-07-23 17:23:36 +03:00 committed by Bjorn Andersson
parent 99356b03b4
commit 66e6a63391
1 changed files with 16 additions and 1 deletions
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17
drivers/soc/qcom/smd-rpm.c
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@ -19,12 +19,14 @@
/** /**
* struct qcom_smd_rpm - state of the rpm device driver * struct qcom_smd_rpm - state of the rpm device driver
* @rpm_channel: reference to the smd channel * @rpm_channel: reference to the smd channel
* @icc: interconnect proxy device
* @ack: completion for acks * @ack: completion for acks
* @lock: mutual exclusion around the send/complete pair * @lock: mutual exclusion around the send/complete pair
* @ack_status: result of the rpm request * @ack_status: result of the rpm request
*/ */
struct qcom_smd_rpm { struct qcom_smd_rpm {
struct rpmsg_endpoint *rpm_channel; struct rpmsg_endpoint *rpm_channel;
struct platform_device *icc;
struct device *dev; struct device *dev;
struct completion ack; struct completion ack;
@ -193,6 +195,7 @@ static int qcom_smd_rpm_callback(struct rpmsg_device *rpdev,
static int qcom_smd_rpm_probe(struct rpmsg_device *rpdev) static int qcom_smd_rpm_probe(struct rpmsg_device *rpdev)
{ {
struct qcom_smd_rpm *rpm; struct qcom_smd_rpm *rpm;
int ret;
rpm = devm_kzalloc(&rpdev->dev, sizeof(*rpm), GFP_KERNEL); rpm = devm_kzalloc(&rpdev->dev, sizeof(*rpm), GFP_KERNEL);
if (!rpm) if (!rpm)
@ -205,11 +208,23 @@ static int qcom_smd_rpm_probe(struct rpmsg_device *rpdev)
rpm->rpm_channel = rpdev->ept; rpm->rpm_channel = rpdev->ept;
dev_set_drvdata(&rpdev->dev, rpm); dev_set_drvdata(&rpdev->dev, rpm);
return of_platform_populate(rpdev->dev.of_node, NULL, NULL, &rpdev->dev); rpm->icc = platform_device_register_data(&rpdev->dev, "icc_smd_rpm", -1,
NULL, 0);
if (IS_ERR(rpm->icc))
return PTR_ERR(rpm->icc);
ret = of_platform_populate(rpdev->dev.of_node, NULL, NULL, &rpdev->dev);
if (ret)
platform_device_unregister(rpm->icc);
return ret;
} }
static void qcom_smd_rpm_remove(struct rpmsg_device *rpdev) static void qcom_smd_rpm_remove(struct rpmsg_device *rpdev)
{ {
struct qcom_smd_rpm *rpm = dev_get_drvdata(&rpdev->dev);
platform_device_unregister(rpm->icc);
of_platform_depopulate(&rpdev->dev); of_platform_depopulate(&rpdev->dev);
} }