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alistair23-linux
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MLK-23791 XUVI/PPM: MU: enable runtime PM for MU3 

Need request and free MU3 in runtime. So MU3 will be in non-active
when it isn't in use.

Signed-off-by: Bing Song <bing.song@nxp.com>
Reviewed-by: Jian Li <jian.li@nxp.com>
Reviewed-by: Zhou Peng <eagle.zhou@nxp.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Bing Song 2020-04-15 13:10:06 +08:00
parent e4032ee2dc
commit 67e5f56812
1 changed files with 21 additions and 8 deletions
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29
drivers/mxc/xuvi/ppm.c
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@ -884,16 +884,11 @@ static int ppm_probe(struct platform_device *pdev)
return -ENOMEM;
dev->plat_dev = pdev;
dev->generic_dev = get_device(&pdev->dev);
ret = xuvi_attach_pm_domains(dev);
if (ret)
goto err_pm;
ret = xuvi_mu_request(dev);
if (ret)
goto err_mu;
ret = parse_dt_info(dev, np);
if (ret) {
dprintk(LVL_ERR, "parse device tree fail\n");
@ -949,12 +944,12 @@ static int ppm_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
dev->generic_dev = get_device(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
return 0;
err_put_dev:
err_mu:
xuvi_detach_pm_domains(dev);
err_pm:
if (&dev->msg_fifo)
@ -1037,8 +1032,11 @@ static int ppm_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
xuvi_mu_free(dev);
xuvi_detach_pm_domains(dev);
if (dev->generic_dev) {
put_device(dev->generic_dev);
dev->generic_dev = NULL;
}
devm_kfree(&pdev->dev, dev);
return 0;
@ -1046,12 +1044,25 @@ static int ppm_remove(struct platform_device *pdev)
static int ppm_runtime_suspend(struct device *dev)
{
struct ppm_dev *ppmdev = (struct ppm_dev *)dev_get_drvdata(dev);
dprintk(LVL_DEBUG, "ppm_runtime_suspend\n");
if (ppmdev->generic_dev)
xuvi_mu_free(ppmdev);
return 0;
}
static int ppm_runtime_resume(struct device *dev)
{
return 0;
int ret = 0;
struct ppm_dev *ppmdev = (struct ppm_dev *)dev_get_drvdata(dev);
dprintk(LVL_DEBUG, "ppm_runtime_resume\n");
if (ppmdev->generic_dev)
ret = xuvi_mu_request(ppmdev);
return ret;
}
static int find_first_available_instance(struct ppm_dev *dev)
@ -1132,6 +1143,7 @@ static int __maybe_unused ppm_suspend(struct device *dev)
int ret = 0;
dprintk(LVL_INFO, "suspend\n");
pm_runtime_get_sync(ppmdev->generic_dev);
if (ppmdev->fw_is_ready) {
ppm_send_snapshot(ppmdev);
reinit_completion(&ppmdev->snap_done_comp);
@ -1147,6 +1159,7 @@ static int __maybe_unused ppm_suspend(struct device *dev)
ppm_dec_cancel_work(ppmdev);
ppmdev->suspend = false;
dprintk(LVL_INFO, "suspend done\n");
pm_runtime_put_sync(ppmdev->generic_dev);
return ret;
}