15 #include <linux/soc/qcom/smd-rpm.h>
20  * struct qcom_smd_rpm - state of the rpm device driver
23  * @dev:		rpm device
26  * @ack_status:		result of the rpm request
39  * struct qcom_rpm_header - header for all rpm requests and responses
49  * struct qcom_rpm_request - request message to the rpm
65  * struct qcom_rpm_message - response message from the rpm
69  * @message:	textual message from the rpm
71  * Multiple of these messages can be stacked in an rpm message.
89  * @rpm:	rpm handle
96 int qcom_rpm_smd_write(struct qcom_smd_rpm *rpm,  in qcom_rpm_smd_write()  argument
112 	/* SMD packets to the RPM may not exceed 256 bytes */  in qcom_rpm_smd_write()
120 	mutex_lock(&rpm->lock);  in qcom_rpm_smd_write()
132 	ret = rpmsg_send(rpm->rpm_channel, pkt, size);  in qcom_rpm_smd_write()
136 	left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);  in qcom_rpm_smd_write()
140 		ret = rpm->ack_status;  in qcom_rpm_smd_write()
144 	mutex_unlock(&rpm->lock);  in qcom_rpm_smd_write()
158 	struct qcom_smd_rpm *rpm = dev_get_drvdata(&rpdev->dev);  in qcom_smd_rpm_callback()  local
167 		dev_err(rpm->dev, "invalid request\n");  in qcom_smd_rpm_callback()
192 	rpm->ack_status = status;  in qcom_smd_rpm_callback()
193 	complete(&rpm->ack);  in qcom_smd_rpm_callback()
199 	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()
213 	rpm->icc = platform_device_register_data(&rpdev->dev, "icc_smd_rpm", -1,  in qcom_smd_rpm_probe()
215 	if (IS_ERR(rpm->icc))  in qcom_smd_rpm_probe()
216 		return PTR_ERR(rpm->icc);  in qcom_smd_rpm_probe()
220 		platform_device_unregister(rpm->icc);  in qcom_smd_rpm_probe()
227 	struct qcom_smd_rpm *rpm = dev_get_drvdata(&rpdev->dev);  in qcom_smd_rpm_remove()  local
229 	platform_device_unregister(rpm->icc);  in qcom_smd_rpm_remove()
234 	{ .compatible = "qcom,rpm-apq8084" },
235 	{ .compatible = "qcom,rpm-ipq6018" },
236 	{ .compatible = "qcom,rpm-msm8916" },
237 	{ .compatible = "qcom,rpm-msm8936" },
238 	{ .compatible = "qcom,rpm-msm8974" },
239 	{ .compatible = "qcom,rpm-msm8976" },
240 	{ .compatible = "qcom,rpm-msm8994" },
241 	{ .compatible = "qcom,rpm-msm8996" },
242 	{ .compatible = "qcom,rpm-msm8998" },
243 	{ .compatible = "qcom,rpm-sdm660" },
244 	{ .compatible = "qcom,rpm-qcs404" },
272 MODULE_DESCRIPTION("Qualcomm SMD backed RPM driver");