hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

usb: core: TPL should apply for both OTG and EH 

According to On-The-Go and Embedded Host Supplement to the USB Revision
2.0 Specification, the targeted hosts (non-PC hosts) include both
embedded hosts and otg, and each targeted host product defines the
set of supported peripherals on a TPL (Targeted Peripheral List). So,
TPL should apply for both OTG and embedded host, and the otg support is
not a must for embedded host.

The TPL support feature will only be effect when CONFIG_USB_OTG_WHITELIST
has been chosen and hcd->tpl_support flag is set, it can avoid the enumeration
fails problem for the user who chooses CONFIG_USB_OTG_WHITELIST wrongly.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Chen 2014-08-19 09:51:53 +08:00 committed by Greg Kroah-Hartman
parent f2693b430b
commit 026f3fcbb0
2 changed files with 18 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/usb/core/hub.c
View File

@ -32,6 +32,7 @@
#include <asm/byteorder.h>
#include "hub.h"
#include "otg_whitelist.h"
#define USB_VENDOR_GENESYS_LOGIC 0x05e3
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
@ -2205,9 +2206,6 @@ static void announce_device(struct usb_device *udev)
static inline void announce_device(struct usb_device *udev) { }
#endif
#ifdef CONFIG_USB_OTG
#include "otg_whitelist.h"
#endif
/**
* usb_enumerate_device_otg - FIXME (usbcore-internal)
@ -2267,21 +2265,6 @@ static int usb_enumerate_device_otg(struct usb_device *udev)
}
}
}
if (!is_targeted(udev)) {
/* Maybe it can talk to us, though we can't talk to it.
* (Includes HNP test device.)
*/
if (udev->bus->b_hnp_enable || udev->bus->is_b_host) {
err = usb_port_suspend(udev, PMSG_SUSPEND);
if (err < 0)
dev_dbg(&udev->dev, "HNP fail, %d\n", err);
}
err = -ENOTSUPP;
goto fail;
}
fail:
#endif
return err;
}
@ -2304,6 +2287,7 @@ fail:
static int usb_enumerate_device(struct usb_device *udev)
{
int err;
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
if (udev->config == NULL) {
err = usb_get_configuration(udev);
@ -2325,6 +2309,19 @@ static int usb_enumerate_device(struct usb_device *udev)
if (err < 0)
return err;
if (IS_ENABLED(CONFIG_USB_OTG_WHITELIST) && hcd->tpl_support &&
!is_targeted(udev) && IS_ENABLED(CONFIG_USB_OTG)) {
/* Maybe it can talk to us, though we can't talk to it.
* (Includes HNP test device.)
*/
if (udev->bus->b_hnp_enable || udev->bus->is_b_host) {
err = usb_port_suspend(udev, PMSG_AUTO_SUSPEND);
if (err < 0)
dev_dbg(&udev->dev, "HNP fail, %d\n", err);
}
return -ENOTSUPP;
}
usb_detect_interface_quirks(udev);
return 0;

13
drivers/usb/core/otg_whitelist.h
View File

@ -10,8 +10,8 @@
*/
/*
* This OTG Whitelist is the OTG "Targeted Peripheral List". It should
* mostly use of USB_DEVICE() or USB_DEVICE_VER() entries..
* This OTG and Embedded Host Whitelist is "Targeted Peripheral List".
* It should mostly use of USB_DEVICE() or USB_DEVICE_VER() entries..
*
* YOU _SHOULD_ CHANGE THIS LIST TO MATCH YOUR PRODUCT AND ITS TESTING!
*/
@ -50,10 +50,6 @@ static int is_targeted(struct usb_device *dev)
{
struct usb_device_id *id = whitelist_table;
/* possible in developer configs only! */
if (!dev->bus->otg_port)
return 1;
/* HNP test device is _never_ targeted (see OTG spec 6.6.6) */
if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1a0a &&
le16_to_cpu(dev->descriptor.idProduct) == 0xbadd))
@ -103,10 +99,7 @@ static int is_targeted(struct usb_device *dev)
dev_err(&dev->dev, "device v%04x p%04x is not supported\n",
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct));
#ifdef CONFIG_USB_OTG_WHITELIST
return 0;
#else
return 1;
#endif
}