Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 40411fc0 authored by Jilai Wang's avatar Jilai Wang
Browse files

msm: npu: Add support to get/set property 



Allow user app to retrieve/modify driver or fw properties. Initially
only support to get FW_STATE/PERF_MODE_MAX/HARDWARE_VERSION
properties.

Change-Id: I59e80d50496a3c4de52b99dd50294e8d0c553a85
Signed-off-by: default avatarJilai Wang <jilaiw@codeaurora.org>
parent 8ca6d749

drivers/media/platform/msm/npu/npu_dev.c

+71 −0
Original line number Diff line number Diff line
@@ -1319,6 +1319,71 @@ static int npu_receive_event(struct npu_client *client, 
	return ret;

}



static int npu_set_property(struct npu_client *client,

	unsigned long arg)

{

	struct msm_npu_property prop;

	void __user *argp = (void __user *)arg;

	int ret = -EINVAL;



	ret = copy_from_user(&prop, argp, sizeof(prop));

	if (ret) {

		NPU_ERR("fail to copy from user\n");

		return -EFAULT;

	}



	switch (prop.prop_id) {

	default:

		NPU_ERR("Not supported property %d\n", prop.prop_id);

		ret = -EINVAL;

		break;

	}



	return ret;

}



static int npu_get_property(struct npu_client *client,

	unsigned long arg)

{

	struct msm_npu_property prop;

	void __user *argp = (void __user *)arg;

	int ret = -EINVAL;

	struct npu_device *npu_dev = client->npu_dev;

	struct npu_host_ctx *host_ctx = &npu_dev->host_ctx;



	ret = copy_from_user(&prop, argp, sizeof(prop));

	if (ret) {

		NPU_ERR("fail to copy from user\n");

		return -EFAULT;

	}



	switch (prop.prop_id) {

	case MSM_NPU_PROP_ID_FW_STATE:

		prop.prop_param[0] = host_ctx->fw_state;

		break;

	case MSM_NPU_PROP_ID_PERF_MODE_MAX:

		prop.prop_param[0] = npu_dev->pwrctrl.num_pwrlevels;

		break;

	case MSM_NPU_PROP_ID_DRV_VERSION:

		prop.prop_param[0] = 0;

		break;

	case MSM_NPU_PROP_ID_HARDWARE_VERSION:

		prop.prop_param[0] = npu_dev->hw_version;

		break;

	default:

		NPU_ERR("Not supported property %d\n", prop.prop_id);

		return -EINVAL;

	}



	ret = copy_to_user(argp, &prop, sizeof(prop));

	if (ret) {

		pr_err("fail to copy to user\n");

		return -EFAULT;

	}



	return ret;

}



static long npu_ioctl(struct file *file, unsigned int cmd,

						 unsigned long arg)

{
@@ -1353,6 +1418,12 @@ static long npu_ioctl(struct file *file, unsigned int cmd, 
	case MSM_NPU_RECEIVE_EVENT:

		ret = npu_receive_event(client, arg);

		break;

	case MSM_NPU_SET_PROP:

		ret = npu_set_property(client, arg);

		break;

	case MSM_NPU_GET_PROP:

		ret = npu_get_property(client, arg);

		break;

	default:

		NPU_ERR("unexpected IOCTL %x\n", cmd);

	}