| From 6597af4e4835ec0709638d48f73c11b5c624790f Mon Sep 17 00:00:00 2001 |
| From: Al Cooper <alcooperx@gmail.com> |
| Date: Fri, 3 Jan 2020 13:18:01 -0500 |
| Subject: [PATCH] phy: usb: Put USB phys into IDDQ on suspend to save power in |
| S2 mode |
| |
| 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> |
| --- |
| drivers/phy/broadcom/phy-brcm-usb-init.c | 2 -- |
| drivers/phy/broadcom/phy-brcm-usb.c | 11 +++++++++-- |
| 2 files changed, 9 insertions(+), 4 deletions(-) |
| |
| --- a/drivers/phy/broadcom/phy-brcm-usb-init.c |
| +++ b/drivers/phy/broadcom/phy-brcm-usb-init.c |
| @@ -1002,8 +1002,6 @@ void brcm_usb_uninit_common(struct brcm_ |
| |
| 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) |
| --- a/drivers/phy/broadcom/phy-brcm-usb.c |
| +++ b/drivers/phy/broadcom/phy-brcm-usb.c |
| @@ -381,8 +381,15 @@ static int brcm_usb_phy_suspend(struct d |
| 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; |
| } |