From: Matthias Kaehlcke <mka@chromium.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Stern <stern@rowland.harvard.edu>,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Mathias Nyman <mathias.nyman@intel.com>,
Felipe Balbi <balbi@kernel.org>
Cc: Bastien Nocera <hadess@hadess.net>,
Peter Chen <peter.chen@kernel.org>,
devicetree@vger.kernel.org,
Michal Simek <michal.simek@xilinx.com>,
linux-kernel@vger.kernel.org,
Douglas Anderson <dianders@chromium.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-usb@vger.kernel.org,
Ravi Chandra Sadineni <ravisadineni@chromium.org>,
Stephen Boyd <swboyd@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
Dmitry Osipenko <digetx@gmail.com>,
Fabio Estevam <festevam@gmail.com>
Subject: [PATCH v15 5/6] usb: host: xhci-plat: Create platform device for onboard hubs in probe()
Date: Mon, 26 Jul 2021 17:41:17 -0700 [thread overview]
Message-ID: <20210726174048.v15.5.I7a3a7d9d2126c34079b1cab87aa0b2ec3030f9b7@changeid> (raw)
In-Reply-To: <20210727004118.2583774-1-mka@chromium.org>
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>
---
Changes in v15:
- none
Changes in v14:
- none
Changes in v13:
- added comment for 'depends on USB_ONBOARD_HUB || !USB_ONBOARD_HUB'
construct
Changes in v12:
- none
Changes in v11:
- use onboard_hub_create/destroy_pdevs() to support multiple onboard
hubs that are connected to the same root hub
- moved field/list to keep track of platform devices from struct
usb_hcd to struct xhci_hcd
- updated commit message
Changes in v10:
- none
Changes in v9:
- added dependency on USB_ONBOARD_HUB (or !!USB_ONBOARD_HUB) to
USB_XHCI_PLATFORM
Changes in v8:
- none
Changes in v7:
- none
Changes in v6:
- none
Changes in v5:
- patch added to the series
drivers/usb/host/Kconfig | 1 +
drivers/usb/host/xhci-plat.c | 6 ++++++
drivers/usb/host/xhci.h | 2 ++
3 files changed, 9 insertions(+)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 518c2312ef0c..099e9615919c 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 # if USB_ONBOARD_HUB=m, this can't be 'y'
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 3c7d281672ae..5ba01d5ccab8 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1923,6 +1923,8 @@ 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));
--
2.32.0.432.gabb21c7263-goog
next prev parent reply other threads:[~2021-07-27 0:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-27 0:41 [PATCH v15 0/6] usb: misc: Add onboard_usb_hub driver Matthias Kaehlcke
2021-07-27 0:41 ` [PATCH v15 1/6] " Matthias Kaehlcke
2021-07-27 0:41 ` [PATCH v15 2/6] of/platform: Add stubs for of_platform_device_create/destroy() Matthias Kaehlcke
2021-07-27 0:41 ` [PATCH v15 3/6] arm64: defconfig: Explicitly enable USB_XHCI_PLATFORM Matthias Kaehlcke
2021-07-27 0:41 ` [PATCH v15 4/6] usb: Specify dependencies on USB_XHCI_PLATFORM with 'depends on' Matthias Kaehlcke
2021-07-27 0:41 ` Matthias Kaehlcke [this message]
2021-07-27 0:41 ` [PATCH v15 6/6] arm64: dts: qcom: sc7180-trogdor: Add nodes for onboard USB hub Matthias Kaehlcke
2021-08-09 15:49 ` [PATCH v15 0/6] usb: misc: Add onboard_usb_hub driver Matthias Kaehlcke
2021-08-11 12:38 ` Roger Quadros
2021-08-11 12:56 ` Roger Quadros
2021-08-12 17:08 ` Matthias Kaehlcke
2021-08-13 6:35 ` Roger Quadros
2021-08-13 18:33 ` Matthias Kaehlcke
2021-10-19 16:24 ` Dmitry Baryshkov
2021-10-19 22:54 ` Matthias Kaehlcke
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