diff options
| author |   Matthias Kaehlcke <mka@chromium.org> | 2021-06-09 15:02:48 -0700 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-15 15:48:35 +0200 |
| commit | c950686b382d0ea5234545fcce252c9e63d7b7a9 (patch) | |
| tree | 67db7952ac5b77e7b312b71ee1d0989e176cf426 /drivers/usb | |
| parent | of/platform: Add stubs for of_platform_device_create/destroy() (diff) | |
| download | linux-dev-c950686b382d0ea5234545fcce252c9e63d7b7a9.tar.xz linux-dev-c950686b382d0ea5234545fcce252c9e63d7b7a9.zip | |
usb: host: xhci-plat: Create platform device for onboard hubs in probe()
Call onboard_hub_create/destroy_pdevs() from _probe()/_remove()
to create/destroy platform devices for onboard USB hubs that may
be connected to the root hub of the controller. These functions
are a NOP unless CONFIG_USB_ONBOARD_HUB=y/m.
Also add a field to struct xhci_hcd to keep track of the onboard hub
platform devices that are owned by the xHCI.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20210609150159.v12.4.I7a3a7d9d2126c34079b1cab87aa0b2ec3030f9b7@changeid
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-plat.c | 6 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 2 |
3 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index df9428f1dc5e..46818b232204 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -54,6 +54,7 @@ config USB_XHCI_PCI_RENESAS config USB_XHCI_PLATFORM tristate "Generic xHCI driver for a platform device" select USB_XHCI_RCAR if ARCH_RENESAS + depends on USB_ONBOARD_HUB || !USB_ONBOARD_HUB help Adds an xHCI host driver for a generic platform device, which provides a memory space and an irq. diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index c1edcc9b13ce..ee98a3671619 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -15,6 +15,7 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/usb/onboard_hub.h> #include <linux/usb/phy.h> #include <linux/slab.h> #include <linux/acpi.h> @@ -374,6 +375,9 @@ static int xhci_plat_probe(struct platform_device *pdev) */ pm_runtime_forbid(&pdev->dev); + INIT_LIST_HEAD(&xhci->onboard_hub_devs); + onboard_hub_create_pdevs(hcd->self.root_hub, &xhci->onboard_hub_devs); + return 0; @@ -420,6 +424,8 @@ static int xhci_plat_remove(struct platform_device *dev) usb_remove_hcd(hcd); usb_put_hcd(shared_hcd); + onboard_hub_destroy_pdevs(&xhci->onboard_hub_devs); + clk_disable_unprepare(clk); clk_disable_unprepare(reg_clk); usb_put_hcd(hcd); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index e417f5ce13d1..a1d5ffb7474d 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1920,6 +1920,8 @@ struct xhci_hcd { struct dentry *debugfs_slots; struct list_head regset_list; + struct list_head onboard_hub_devs; + void *dbc; /* platform-specific data -- must come last */ unsigned long priv[] __aligned(sizeof(s64)); |