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OpenCloudOS-Kernel
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usb: cdns3: introduce set_phy_power_on{off} APIs 

Since we have both USB2 and USB3 PHYs for cdns3 controller, it is
better we have unity APIs to handle both USB2 and USB3's power, it
could simplify code for error handling and further power management
implementation.

Reviewed-by: Pawel Laszczak <pawell@cadence.com>
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
This commit is contained in:
Peter Chen 2020-09-02 17:57:31 +08:00 committed by Felipe Balbi
parent 753a18c259
commit efe2fa0836
1 changed files with 28 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/usb/cdns3/core.c
View File

@ -371,6 +371,27 @@ pm_put:
return ret;
}
static int set_phy_power_on(struct cdns3 *cdns)
{
int ret;
ret = phy_power_on(cdns->usb2_phy);
if (ret)
return ret;
ret = phy_power_on(cdns->usb3_phy);
if (ret)
phy_power_off(cdns->usb2_phy);
return ret;
}
static void set_phy_power_off(struct cdns3 *cdns)
{
phy_power_off(cdns->usb3_phy);
phy_power_off(cdns->usb2_phy);
}
/**
* cdns3_probe - probe for cdns3 core device
* @pdev: Pointer to cdns3 core platform device
@ -463,14 +484,10 @@ static int cdns3_probe(struct platform_device *pdev)
if (ret)
goto err1;
ret = phy_power_on(cdns->usb2_phy);
ret = set_phy_power_on(cdns);
if (ret)
goto err2;
ret = phy_power_on(cdns->usb3_phy);
if (ret)
goto err3;
sw_desc.set = cdns3_role_set;
sw_desc.get = cdns3_role_get;
sw_desc.allow_userspace_control = true;
@ -482,16 +499,16 @@ static int cdns3_probe(struct platform_device *pdev)
if (IS_ERR(cdns->role_sw)) {
ret = PTR_ERR(cdns->role_sw);
dev_warn(dev, "Unable to register Role Switch\n");
goto err4;
goto err3;
}
ret = cdns3_drd_init(cdns);
if (ret)
goto err5;
goto err4;
ret = cdns3_core_init_role(cdns);
if (ret)
goto err5;
goto err4;
device_set_wakeup_capable(dev, true);
pm_runtime_set_active(dev);
@ -508,14 +525,11 @@ static int cdns3_probe(struct platform_device *pdev)
dev_dbg(dev, "Cadence USB3 core: probe succeed\n");
return 0;
err5:
err4:
cdns3_drd_exit(cdns);
usb_role_switch_unregister(cdns->role_sw);
err4:
phy_power_off(cdns->usb3_phy);
err3:
phy_power_off(cdns->usb2_phy);
set_phy_power_off(cdns);
err2:
phy_exit(cdns->usb3_phy);
err1:
@ -539,8 +553,7 @@ static int cdns3_remove(struct platform_device *pdev)
pm_runtime_put_noidle(&pdev->dev);
cdns3_exit_roles(cdns);
usb_role_switch_unregister(cdns->role_sw);
phy_power_off(cdns->usb2_phy);
phy_power_off(cdns->usb3_phy);
set_phy_power_off(cdns);
phy_exit(cdns->usb2_phy);
phy_exit(cdns->usb3_phy);
return 0;