* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-03 9:30 Yu Chen
0 siblings, 0 replies; 6+ messages in thread
From: Yu Chen @ 2018-12-03 9:30 UTC (permalink / raw)
To: Andy Shevchenko
Cc: wangbinghui, USB, devicetree, Linux Kernel Mailing List,
Suzhuangluan, Kongfei, Felipe Balbi, Greg Kroah-Hartman,
Krogerus, Heikki
On 2018/12/3 17:15, Andy Shevchenko wrote:
> On Mon, Dec 3, 2018 at 5:47 AM Yu Chen <chenyu56@huawei.com> wrote:
>>
>> The Type-C drivers use USB role switch API to inform the
>> system about the negotiated data role, so registering a role
>> switch in the DRD code in order to support platforms with
>> USB Type-C connectors.
>
>> + pr_info("%s:set role %d\n", __func__, role);
>
> Noise!
>
>> + return role;
>> +
>
> Redundant blank line.
>
>> +}
>
OK. Thanks!
Chen Yu
^ permalink raw reply [flat|nested] 6+ messages in thread
* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-05 0:56 Yu Chen
0 siblings, 0 replies; 6+ messages in thread
From: Yu Chen @ 2018-12-05 0:56 UTC (permalink / raw)
To: Heikki Krogerus
Cc: liuyu712, linux-usb, devicetree, linux-kernel, suzhuangluan,
kongfei, Felipe Balbi, Greg Kroah-Hartman
On 2018/12/4 18:54, Heikki Krogerus wrote:
> On Mon, Dec 03, 2018 at 11:45:12AM +0800, Yu Chen wrote:
>> The Type-C drivers use USB role switch API to inform the
>> system about the negotiated data role, so registering a role
>> switch in the DRD code in order to support platforms with
>> USB Type-C connectors.
>>
>> Cc: Felipe Balbi <balbi@kernel.org>
>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Signed-off-by: Yu Chen <chenyu56@huawei.com>
>> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
>>
>> --
>> v0:
>> The patch is provided by Heikki Krogerus. I modified and test it
>> on Hikey960 platform.
>> --
>> ---
>> drivers/usb/dwc3/core.h | 2 ++
>> drivers/usb/dwc3/drd.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
>> 2 files changed, 51 insertions(+)
>
> You need to select USB_ROLE_SWITCH in Kconfig:
>
> diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
> index 1a0404fda596..3a0cb9f1f38a 100644
> --- a/drivers/usb/dwc3/Kconfig
> +++ b/drivers/usb/dwc3/Kconfig
> @@ -42,6 +42,7 @@ config USB_DWC3_DUAL_ROLE
> bool "Dual Role mode"
> depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3))
> depends on (EXTCON=y || EXTCON=USB_DWC3)
> + select USB_ROLE_SWITCH
> help
> This is the default mode of working of DWC3 controller where
> both host and gadget features are enabled.
>
OK.
Thanks!
^ permalink raw reply [flat|nested] 6+ messages in thread
* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-04 10:54 Heikki Krogerus
0 siblings, 0 replies; 6+ messages in thread
From: Heikki Krogerus @ 2018-12-04 10:54 UTC (permalink / raw)
To: Yu Chen
Cc: linux-usb, devicetree, linux-kernel, suzhuangluan, kongfei,
Felipe Balbi, Greg Kroah-Hartman
On Mon, Dec 03, 2018 at 11:45:12AM +0800, Yu Chen wrote:
> The Type-C drivers use USB role switch API to inform the
> system about the negotiated data role, so registering a role
> switch in the DRD code in order to support platforms with
> USB Type-C connectors.
>
> Cc: Felipe Balbi <balbi@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Yu Chen <chenyu56@huawei.com>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
>
> --
> v0:
> The patch is provided by Heikki Krogerus. I modified and test it
> on Hikey960 platform.
> --
> ---
> drivers/usb/dwc3/core.h | 2 ++
> drivers/usb/dwc3/drd.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 51 insertions(+)
You need to select USB_ROLE_SWITCH in Kconfig:
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index 1a0404fda596..3a0cb9f1f38a 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -42,6 +42,7 @@ config USB_DWC3_DUAL_ROLE
bool "Dual Role mode"
depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3))
depends on (EXTCON=y || EXTCON=USB_DWC3)
+ select USB_ROLE_SWITCH
help
This is the default mode of working of DWC3 controller where
both host and gadget features are enabled.
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-03 12:43 Heikki Krogerus
0 siblings, 0 replies; 6+ messages in thread
From: Heikki Krogerus @ 2018-12-03 12:43 UTC (permalink / raw)
To: Yu Chen
Cc: linux-usb, devicetree, linux-kernel, suzhuangluan, kongfei,
Felipe Balbi, Greg Kroah-Hartman
On Mon, Dec 03, 2018 at 11:45:12AM +0800, Yu Chen wrote:
> The Type-C drivers use USB role switch API to inform the
> system about the negotiated data role, so registering a role
> switch in the DRD code in order to support platforms with
> USB Type-C connectors.
>
> Cc: Felipe Balbi <balbi@kernel.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Yu Chen <chenyu56@huawei.com>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
>
> --
> v0:
> The patch is provided by Heikki Krogerus. I modified and test it
> on Hikey960 platform.
Either make me as the original author by adding a "from" line with my
address, or just use that "Suggested-by" tag with this patch as well.
thanks,
^ permalink raw reply [flat|nested] 6+ messages in thread
* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-03 9:15 Andy Shevchenko
0 siblings, 0 replies; 6+ messages in thread
From: Andy Shevchenko @ 2018-12-03 9:15 UTC (permalink / raw)
To: chenyu56
Cc: USB, devicetree, Linux Kernel Mailing List, Suzhuangluan,
Kongfei, Felipe Balbi, Greg Kroah-Hartman, Krogerus, Heikki
On Mon, Dec 3, 2018 at 5:47 AM Yu Chen <chenyu56@huawei.com> wrote:
>
> The Type-C drivers use USB role switch API to inform the
> system about the negotiated data role, so registering a role
> switch in the DRD code in order to support platforms with
> USB Type-C connectors.
> + pr_info("%s:set role %d\n", __func__, role);
Noise!
> + return role;
> +
Redundant blank line.
> +}
^ permalink raw reply [flat|nested] 6+ messages in thread
* [v1,09/12] usb: dwc3: Registering a role switch in the DRD code.
@ 2018-12-03 3:45 Yu Chen
0 siblings, 0 replies; 6+ messages in thread
From: Yu Chen @ 2018-12-03 3:45 UTC (permalink / raw)
To: linux-usb, devicetree, linux-kernel
Cc: suzhuangluan, kongfei, Yu Chen, Felipe Balbi, Greg Kroah-Hartman,
Heikki Krogerus
The Type-C drivers use USB role switch API to inform the
system about the negotiated data role, so registering a role
switch in the DRD code in order to support platforms with
USB Type-C connectors.
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Yu Chen <chenyu56@huawei.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
v0:
The patch is provided by Heikki Krogerus. I modified and test it
on Hikey960 platform.
--
---
drivers/usb/dwc3/core.h | 2 ++
drivers/usb/dwc3/drd.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 51 insertions(+)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index b3cea95f7720..47e388878e9a 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -25,6 +25,7 @@
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
+#include <linux/usb/role.h>
#include <linux/ulpi/interface.h>
#include <linux/phy/phy.h>
@@ -1057,6 +1058,7 @@ struct dwc3 {
struct extcon_dev *edev;
struct notifier_block edev_nb;
enum usb_phy_interface hsphy_mode;
+ struct usb_role_switch *role_sw;
u32 fladj;
u32 irq_gadget;
diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c
index 218371f985ca..3155121e6d29 100644
--- a/drivers/usb/dwc3/drd.c
+++ b/drivers/usb/dwc3/drd.c
@@ -463,6 +463,48 @@ static struct extcon_dev *dwc3_get_extcon(struct dwc3 *dwc)
return edev;
}
+static int dwc3_usb_role_switch_set(struct device *dev, enum usb_role role)
+{
+ u32 mode;
+
+ pr_info("%s:set role %d\n", __func__, role);
+
+ switch (role) {
+ case USB_ROLE_HOST:
+ mode = DWC3_GCTL_PRTCAP_HOST;
+ break;
+ case USB_ROLE_DEVICE:
+ mode = DWC3_GCTL_PRTCAP_DEVICE;
+ break;
+ default:
+ mode = DWC3_GCTL_PRTCAP_HOST;
+ break;
+ };
+
+ dwc3_set_mode(dev_get_drvdata(dev), mode);
+ return 0;
+
+}
+
+static enum usb_role dwc3_usb_role_switch_get(struct device *dev)
+{
+ struct dwc3 *dwc = dev_get_drvdata(dev);
+ unsigned long flags;
+ enum usb_role role;
+
+ spin_lock_irqsave(&dwc->lock, flags);
+ role = dwc->current_otg_role;
+ spin_unlock_irqrestore(&dwc->lock, flags);
+
+ return role;
+
+}
+
+static const struct usb_role_switch_desc dwc3_role_switch = {
+ .set = dwc3_usb_role_switch_set,
+ .get = dwc3_usb_role_switch_get,
+};
+
int dwc3_drd_init(struct dwc3 *dwc)
{
int ret, irq;
@@ -511,6 +553,11 @@ int dwc3_drd_init(struct dwc3 *dwc)
dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG);
}
+ dwc->role_sw = usb_role_switch_register(dwc->dev, &dwc3_role_switch);
+ if (ret) {
+ dwc3_drd_exit(dwc);
+ return PTR_ERR(dwc->role_sw);
+ }
return 0;
}
@@ -546,4 +593,6 @@ void dwc3_drd_exit(struct dwc3 *dwc)
if (!dwc->edev)
free_irq(dwc->otg_irq, dwc);
+
+ usb_role_switch_unregister(dwc->role_sw);
}
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-12-05 0:56 UTC | newest]
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2018-12-03 3:45 Yu Chen
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