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phy: usb: Put USB phys into IDDQ on suspend to save power in S2 mode

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Currently the Phy driver will put the USB phys into the max
power saving mode (IDDQ) when there is no corresponding XHCI, EHCI
or OHCI client (through rmmod, unbind or if the driver is not
builtin). This change will also put the Phys into IDDQ mode
on suspend so that S2 will get the additional power savings.

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Al Cooper 2020-01-03 13:18:01 -05:00 committed by Kishon Vijay Abraham I
parent ece5ffd9e1
commit 6597af4e48
2 changed files with 9 additions and 4 deletions
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2
drivers/phy/broadcom/phy-brcm-usb-init.c
View file

@ -1002,8 +1002,6 @@ void brcm_usb_uninit_common(struct brcm_usb_init_params *params)
void brcm_usb_uninit_eohci(struct brcm_usb_init_params *params)
{
if (USB_CTRL_MASK_FAMILY(params, USB_PM, USB20_HC_RESETB))
USB_CTRL_UNSET_FAMILY(params, USB_PM, USB20_HC_RESETB);
}
void brcm_usb_uninit_xhci(struct brcm_usb_init_params *params)

11
drivers/phy/broadcom/phy-brcm-usb.c
View file

@ -381,8 +381,15 @@ static int brcm_usb_phy_suspend(struct device *dev)
struct brcm_usb_phy_data *priv = dev_get_drvdata(dev);
if (priv->init_count) {
clk_disable_unprepare(priv->usb_20_clk);
clk_disable_unprepare(priv->usb_30_clk);
if (priv->phys[BRCM_USB_PHY_3_0].inited)
brcm_usb_uninit_xhci(&priv->ini);
if (priv->phys[BRCM_USB_PHY_2_0].inited)
brcm_usb_uninit_eohci(&priv->ini);
brcm_usb_uninit_common(&priv->ini);
if (priv->phys[BRCM_USB_PHY_3_0].inited)
clk_disable_unprepare(priv->usb_30_clk);
if (priv->phys[BRCM_USB_PHY_2_0].inited)
clk_disable_unprepare(priv->usb_20_clk);
}
return 0;
}