15 #include <linux/soc/qcom/smd-rpm.h>
20  * struct qcom_smd_rpm - state of the rpm device driver
22  * @dev:		rpm device
25  * @ack_status:		result of the rpm request
37  * struct qcom_rpm_header - header for all rpm requests and responses
47  * struct qcom_rpm_request - request message to the rpm
63  * struct qcom_rpm_message - response message from the rpm
67  * @message:	textual message from the rpm
69  * Multiple of these messages can be stacked in an rpm message.
87  * @rpm:	rpm handle
94 int qcom_rpm_smd_write(struct qcom_smd_rpm *rpm,  in qcom_rpm_smd_write()  argument
110 	/* SMD packets to the RPM may not exceed 256 bytes */  in qcom_rpm_smd_write()
118 	mutex_lock(&rpm->lock);  in qcom_rpm_smd_write()
130 	ret = rpmsg_send(rpm->rpm_channel, pkt, size);  in qcom_rpm_smd_write()
134 	left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);  in qcom_rpm_smd_write()
138 		ret = rpm->ack_status;  in qcom_rpm_smd_write()
142 	mutex_unlock(&rpm->lock);  in qcom_rpm_smd_write()
156 	struct qcom_smd_rpm *rpm = dev_get_drvdata(&rpdev->dev);  in qcom_smd_rpm_callback()  local
165 		dev_err(rpm->dev, "invalid request\n");  in qcom_smd_rpm_callback()
190 	rpm->ack_status = status;  in qcom_smd_rpm_callback()
191 	complete(&rpm->ack);  in qcom_smd_rpm_callback()
197 	struct qcom_smd_rpm *rpm;  in qcom_smd_rpm_probe()  local
202 	rpm = devm_kzalloc(&rpdev->dev, sizeof(*rpm), GFP_KERNEL);  in qcom_smd_rpm_probe()
203 	if (!rpm)  in qcom_smd_rpm_probe()
206 	mutex_init(&rpm->lock);  in qcom_smd_rpm_probe()
207 	init_completion(&rpm->ack);  in qcom_smd_rpm_probe()
209 	rpm->dev = &rpdev->dev;  in qcom_smd_rpm_probe()
210 	rpm->rpm_channel = rpdev->ept;  in qcom_smd_rpm_probe()
211 	dev_set_drvdata(&rpdev->dev, rpm);  in qcom_smd_rpm_probe()
248 MODULE_DESCRIPTION("Qualcomm SMD backed RPM driver");