From: Roger Quadros <rogerq@ti.com>
To: peter.chen@freescale.com
Cc: balbi@kernel.org, tony@atomide.com, gregkh@linuxfoundation.org,
dan.j.williams@intel.com, mathias.nyman@linux.intel.com,
Joao.Pinto@synopsys.com, sergei.shtylyov@cogentembedded.com,
jun.li@freescale.com, grygorii.strashko@ti.com,
yoshihiro.shimoda.uh@renesas.com, robh@kernel.org,
nsekhar@ti.com, b-liu@ti.com, linux-usb@vger.kernel.org,
linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, Roger Quadros <rogerq@ti.com>
Subject: [PATCH v9 09/14] usb: of: add an API to get OTG device from USB controller node
Date: Wed, 8 Jun 2016 12:03:41 +0300 [thread overview]
Message-ID: <1465376626-30122-10-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1465376626-30122-1-git-send-email-rogerq@ti.com>
The OTG controller and the USB controller can be linked via the
'otg-controller' property in the USB controller's device node.
of_usb_get_otg() can be used to get the OTG controller device
from the USB controller's device node.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Peter Chen <peter.chen@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
---
Documentation/devicetree/bindings/usb/generic.txt | 3 +++
drivers/usb/common/common.c | 27 +++++++++++++++++++++++
include/linux/usb/of.h | 9 ++++++++
3 files changed, 39 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
index bba8257..f6866c1 100644
--- a/Documentation/devicetree/bindings/usb/generic.txt
+++ b/Documentation/devicetree/bindings/usb/generic.txt
@@ -24,6 +24,9 @@ Optional properties:
optional for OTG device.
- adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is
optional for OTG device.
+ - otg-controller: phandle to otg controller. Host or gadget controllers can
+ contain this property to link it to a particular OTG
+ controller.
This is an attribute to a USB controller such as:
diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index e3d0161..d7ec471 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -238,6 +238,33 @@ int of_usb_update_otg_caps(struct device_node *np,
}
EXPORT_SYMBOL_GPL(of_usb_update_otg_caps);
+#ifdef CONFIG_USB_OTG
+/**
+ * of_usb_get_otg - get the OTG controller linked to the USB controller
+ * @np: Pointer to the device_node of the USB controller
+ * @otg_caps: Pointer to the target usb_otg_caps to be set
+ *
+ * Returns the OTG controller device or NULL on error.
+ */
+struct device *of_usb_get_otg(struct device_node *np)
+{
+ struct device_node *otg_np;
+ struct platform_device *pdev;
+
+ otg_np = of_parse_phandle(np, "otg-controller", 0);
+ if (!otg_np)
+ return NULL;
+
+ pdev = of_find_device_by_node(otg_np);
+ of_node_put(otg_np);
+ if (!pdev)
+ return NULL;
+
+ return &pdev->dev;
+}
+EXPORT_SYMBOL_GPL(of_usb_get_otg);
+#endif
+
#endif
MODULE_LICENSE("GPL");
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index de3237f..499a4e8 100644
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -40,6 +40,15 @@ static inline struct device_node *usb_of_get_child_node
}
#endif
+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_OTG)
+struct device *of_usb_get_otg(struct device_node *np);
+#else
+static inline struct device *of_usb_get_otg(struct device_node *np)
+{
+ return NULL;
+}
+#endif
+
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)
enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np);
#else
--
2.7.4
next prev parent reply other threads:[~2016-06-08 9:03 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 9:03 [PATCH v9 00/14] USB OTG/dual-role framework Roger Quadros
2016-06-08 9:03 ` [PATCH v9 01/14] usb: hcd: Initialize hcd->flags to 0 Roger Quadros
2016-06-08 9:03 ` [PATCH v9 02/14] usb: otg-fsm: Prevent build warning "VDBG" redefined Roger Quadros
2016-06-08 9:03 ` [PATCH v9 03/14] usb: hcd.h: Add OTG to HCD interface Roger Quadros
[not found] ` <1465376626-30122-4-git-send-email-rogerq-l0cyMroinI0@public.gmane.org>
2016-06-08 11:39 ` Sergei Shtylyov
2016-06-08 12:04 ` Roger Quadros
[not found] ` <575809E9.7010409-l0cyMroinI0@public.gmane.org>
2016-06-08 12:10 ` Sergei Shtylyov
[not found] ` <f5f068ae-c46a-5bad-45e1-f0f9cb5f8592-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2016-06-09 7:31 ` Roger Quadros
2016-06-09 10:16 ` Sergei Shtylyov
[not found] ` <5201761f-4efa-f941-b05f-e4a2b91c75c0-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2016-06-09 14:11 ` Alan Stern
2016-06-10 7:01 ` Roger Quadros
2016-06-09 7:51 ` [PATCH v10 " Roger Quadros
2016-06-08 9:03 ` [PATCH v9 04/14] usb: otg-fsm: use usb_otg wherever possible Roger Quadros
2016-06-08 9:03 ` [PATCH v9 05/14] usb: otg-fsm: move host controller operations into usb_otg->hcd_ops Roger Quadros
2016-06-08 9:03 ` [PATCH v9 06/14] usb: gadget.h: Add OTG to gadget interface Roger Quadros
2016-06-08 9:03 ` [PATCH v9 07/14] usb: otg: get rid of CONFIG_USB_OTG_FSM in favour of CONFIG_USB_OTG Roger Quadros
2016-06-08 9:03 ` [PATCH v9 08/14] usb: otg: add OTG/dual-role core Roger Quadros
2016-06-08 9:53 ` Peter Chen
2016-06-08 10:12 ` Roger Quadros
[not found] ` <5757EF7A.20604-l0cyMroinI0@public.gmane.org>
2016-06-08 12:42 ` Peter Chen
2016-06-09 7:24 ` Roger Quadros
[not found] ` <575919BC.8080003-l0cyMroinI0@public.gmane.org>
2016-06-12 6:26 ` Peter Chen
2016-06-12 10:56 ` Peter Chen
2016-06-09 7:53 ` [PATCH v10 " Roger Quadros
2016-06-09 12:34 ` Sergei Shtylyov
2016-06-10 7:04 ` Roger Quadros
2016-06-10 10:19 ` Roger Quadros
[not found] ` <575A9430.6070508-l0cyMroinI0@public.gmane.org>
2016-06-10 10:44 ` Sergei Shtylyov
2016-06-10 10:54 ` Roger Quadros
[not found] ` <575A9C7C.7020902-l0cyMroinI0@public.gmane.org>
2016-06-10 11:02 ` Felipe Balbi
2016-06-08 9:03 ` Roger Quadros [this message]
2016-06-08 9:03 ` [PATCH v9 10/14] usb: otg: add hcd companion support Roger Quadros
2016-06-08 9:03 ` [PATCH v9 11/14] usb: otg: use dev_dbg() instead of VDBG() Roger Quadros
[not found] ` <1465376626-30122-12-git-send-email-rogerq-l0cyMroinI0@public.gmane.org>
2016-06-08 15:10 ` Joe Perches
[not found] ` <1465398640.25087.50.camel-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org>
2016-06-09 7:25 ` Roger Quadros
2016-06-09 7:55 ` [PATCH v10 " Roger Quadros
[not found] ` <575920D9.7080905-l0cyMroinI0@public.gmane.org>
2016-06-09 15:43 ` Joe Perches
[not found] ` <1465487024.25087.72.camel-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org>
2016-06-10 7:05 ` Roger Quadros
2016-06-08 9:03 ` [PATCH v9 12/14] usb: hcd: Adapt to OTG core Roger Quadros
2016-06-08 11:42 ` Sergei Shtylyov
[not found] ` <22442eeb-e927-d7ac-52c6-3aebd2106837-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2016-06-08 12:06 ` Roger Quadros
2016-06-08 12:11 ` Sergei Shtylyov
[not found] ` <21edbb67-8219-14ac-5c33-cabfd62d5fa1-M4DtvfQ/ZS1MRgGoP+s0PdBPR1lH4CV8@public.gmane.org>
2016-06-09 7:27 ` Roger Quadros
2016-06-08 9:03 ` [PATCH v9 13/14] usb: gadget: udc: adapt " Roger Quadros
[not found] ` <1465376626-30122-14-git-send-email-rogerq-l0cyMroinI0@public.gmane.org>
2016-06-09 10:49 ` Yoshihiro Shimoda
[not found] ` <SG2PR06MB09198DD132E005FFD4F4CAEED85F0-ESzmfEwOt/zNQ8RBPPB5A20DtJ1/0DrXvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2016-06-10 7:06 ` Roger Quadros
2016-06-08 9:03 ` [PATCH v9 14/14] usb: host: xhci-plat: Add otg device to platform data Roger Quadros
[not found] ` <1465376626-30122-1-git-send-email-rogerq-l0cyMroinI0@public.gmane.org>
2016-06-09 5:27 ` [PATCH v9 00/14] USB OTG/dual-role framework Peter Chen
[not found] ` <CAL411-owotvsJVEnbFh5g8yK7YEPnnpBhYx9_tRf6NQET38L+A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-06-09 7:30 ` Roger Quadros
2016-06-09 10:13 ` Yoshihiro Shimoda
-- strict thread matches above, loose matches on Subject: below --
2016-05-13 10:03 [PATCH v8 " Roger Quadros
2016-05-13 10:03 ` [PATCH v8 09/14] usb: of: add an API to get OTG device from USB controller node Roger Quadros
2016-05-20 9:29 ` [PATCH v9 " Roger Quadros
2016-05-23 21:06 ` Rob Herring
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