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Commit 0877e125 authored by Jilai Wang's avatar Jilai Wang
Browse files

msm: npu: Initial support NPU suspend/resume 



When device enters suspend mode, flush disable firmware work to
make sure NPU is powered off when device is suspended.

Change-Id: I75a63accdb12e6535b897f2b980d76515593b710
Signed-off-by: default avatarJilai Wang <jilaiw@codeaurora.org>
parent ddf7db4c

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

+24 −13
Original line number Diff line number Diff line
@@ -106,8 +106,8 @@ static int npu_of_parse_pwrlevels(struct npu_device *npu_dev, 
static int npu_pwrctrl_init(struct npu_device *npu_dev);

static int npu_probe(struct platform_device *pdev);

static int npu_remove(struct platform_device *pdev);

static int npu_suspend(struct platform_device *dev, pm_message_t state);

static int npu_resume(struct platform_device *dev);

static int npu_pm_suspend(struct device *dev);

static int npu_pm_resume(struct device *dev);

static int __init npu_init(void);

static void __exit npu_exit(void);
@@ -185,17 +185,17 @@ static const struct of_device_id npu_dt_match[] = { 
	{}

};



static const struct dev_pm_ops npu_pm_ops = {

	SET_SYSTEM_SLEEP_PM_OPS(npu_pm_suspend, npu_pm_resume)

};



static struct platform_driver npu_driver = {

	.probe = npu_probe,

	.remove = npu_remove,

#if defined(CONFIG_PM)

	.suspend = npu_suspend,

	.resume = npu_resume,

#endif

	.driver = {

		.name = "msm_npu",

		.of_match_table = npu_dt_match,

		.pm = NULL,

		.pm = &npu_pm_ops,

	},

};
@@ -2209,7 +2209,7 @@ static int npu_probe(struct platform_device *pdev) 
	npu_dev->pdev = pdev;

	mutex_init(&npu_dev->dev_lock);



	platform_set_drvdata(pdev, npu_dev);

	dev_set_drvdata(&pdev->dev, npu_dev);

	res = platform_get_resource_byname(pdev,

		IORESOURCE_MEM, "core");

	if (!res) {
@@ -2434,6 +2434,7 @@ static int npu_probe(struct platform_device *pdev) 
	unregister_chrdev_region(npu_dev->dev_num, 1);

	npu_mbox_deinit(npu_dev);

error_get_dev_num:

	dev_set_drvdata(&pdev->dev, NULL);

	return rc;

}
@@ -2451,7 +2452,7 @@ static int npu_remove(struct platform_device *pdev) 
	device_destroy(npu_dev->class, npu_dev->dev_num);

	class_destroy(npu_dev->class);

	unregister_chrdev_region(npu_dev->dev_num, 1);

	platform_set_drvdata(pdev, NULL);

	dev_set_drvdata(&pdev->dev, NULL);

	npu_mbox_deinit(npu_dev);

	msm_bus_scale_unregister_client(npu_dev->bwctrl.bus_client);
@@ -2464,17 +2465,27 @@ static int npu_remove(struct platform_device *pdev) 
 * Suspend/Resume

 * -------------------------------------------------------------------------

 */

#if defined(CONFIG_PM)

static int npu_suspend(struct platform_device *dev, pm_message_t state)

static int npu_pm_suspend(struct device *dev)

{

	struct npu_device *npu_dev;



	npu_dev = dev_get_drvdata(dev);

	if (!npu_dev) {

		NPU_ERR("invalid NPU dev\n");

		return -EINVAL;

	}



	NPU_DBG("suspend npu\n");

	npu_host_suspend(npu_dev);



	return 0;

}



static int npu_resume(struct platform_device *dev)

static int npu_pm_resume(struct device *dev)

{

	NPU_DBG("resume npu\n");

	return 0;

}

#endif



/* -------------------------------------------------------------------------

 * Module Entry Points

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

+7 −0
Original line number Diff line number Diff line
@@ -2837,3 +2837,10 @@ int32_t npu_host_get_perf_mode(struct npu_client *client, uint32_t network_hdl) 


	return param_val;

}



void npu_host_suspend(struct npu_device *npu_dev)

{

	struct npu_host_ctx *host_ctx = &npu_dev->host_ctx;



	flush_delayed_work(&host_ctx->disable_fw_work);

}

drivers/media/platform/msm/npu/npu_mgr.h

+1 −0
Original line number Diff line number Diff line
@@ -178,6 +178,7 @@ int npu_host_update_power(struct npu_device *npu_dev); 
int32_t npu_host_set_perf_mode(struct npu_client *client, uint32_t network_hdl,

	uint32_t perf_mode);

int32_t npu_host_get_perf_mode(struct npu_client *client, uint32_t network_hdl);

void npu_host_suspend(struct npu_device *npu_dev);

void npu_dump_debug_info(struct npu_device *npu_dev);

void npu_dump_ipc_packet(struct npu_device *npu_dev, void *cmd_ptr);