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| author | Peter Chen <peter.chen@nxp.com> | 2020-09-18 16:17:46 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-20 16:18:00 +0200 |
| commit | f768e718911e03a4a20b65f984eaa9b09045e4cd (patch) | |
| tree | 6a7a6e3a87866c4ee1446b4279698daa7508f019 /drivers/usb/host | |
| parent | 93cb8f13be872bc2895a97a42a666201e68b2a1d (diff) | |
| download | linux-stable-f768e718911e03a4a20b65f984eaa9b09045e4cd.tar.gz linux-stable-f768e718911e03a4a20b65f984eaa9b09045e4cd.tar.bz2 linux-stable-f768e718911e03a4a20b65f984eaa9b09045e4cd.zip | |
usb: host: xhci-plat: add priv quirk for skip PHY initialization
Some DRD controllers (eg, dwc3 & cdns3) have PHY management at
their own driver to cover both device and host mode, so add one
priv quirk for such users to skip PHY management from HCD core.
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200918131752.16488-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 8 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 07ca000a0084..14ff65a387e8 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -183,6 +183,8 @@ static int xhci_plat_probe(struct platform_device *pdev) struct usb_hcd *hcd; int ret; int irq; + struct xhci_plat_priv *priv = NULL; + if (usb_disabled()) return -ENODEV; @@ -280,8 +282,7 @@ static int xhci_plat_probe(struct platform_device *pdev) priv_match = dev_get_platdata(&pdev->dev); if (priv_match) { - struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); - + priv = hcd_to_xhci_priv(hcd); /* Just copy data for now */ *priv = *priv_match; } @@ -329,6 +330,9 @@ static int xhci_plat_probe(struct platform_device *pdev) hcd->tpl_support = of_usb_host_tpl_support(sysdev->of_node); xhci->shared_hcd->tpl_support = hcd->tpl_support; + if (priv && (priv->quirks & XHCI_SKIP_PHY_INIT)) + hcd->skip_phy_initialization = 1; + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); if (ret) goto disable_usb_phy; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index ac44b62ca0c5..8be88379c0fb 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1876,6 +1876,7 @@ struct xhci_hcd { #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) #define XHCI_RENESAS_FW_QUIRK BIT_ULL(36) +#define XHCI_SKIP_PHY_INIT BIT_ULL(37) unsigned int num_active_eps; unsigned int limit_active_eps; |