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Date: Fri, 24 Aug 2012 20:46:18 +0200
From: Michal Nazarewicz <mpn@...gle.com>
To: Felipe Balbi <balbi@...com>
Cc: Alan Stern <stern@...land.harvard.edu>, linux-usb@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED
From: Michal Nazarewicz <mina86@...a86.com>
This commit removes USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED
Kconfig options. Since now kernel allows many UDC drivers to be
compiled, those options may turn to no longer be valid. For
instance, if someone decides to build UDC that supports super
speed and UDC that supports high speed only, the latter will be
"assumed" to support super speed since USB_GADGET_SUPERSPEED will
be selected by the former.
The test of whether CONFIG_USB_GADGET_*SPEED was defined was just
an optimisation which removed otherwise dead code (ie. if UDC is
not dual speed, there is no need to handle cases that can happen
if speed is high). This commit removes those checks.
Signed-off-by: Michal Nazarewicz <mina86@...a86.com>
---
Hi,
I've sent this patch quite a while ago but it did not got picked up
for some reason. Looking at the archives[1] I could not figure out
a reason why this patch should be omitted so I'm resending it.
This is rebase on top of v3.6-rc3.
[1] https://groups.google.com/forum/?fromgroups=#!topic/linux.kernel/cUOFAhPGNhE
drivers/usb/chipidea/Kconfig | 1 -
drivers/usb/dwc3/Kconfig | 2 --
drivers/usb/gadget/Kconfig | 25 -------------------------
drivers/usb/gadget/composite.c | 9 +--------
drivers/usb/gadget/inode.c | 15 ++++-----------
drivers/usb/gadget/u_ether.c | 7 -------
drivers/usb/musb/Kconfig | 1 -
include/linux/usb/gadget.h | 19 ++-----------------
8 files changed, 7 insertions(+), 72 deletions(-)
diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig
index 47e499c..1ea932a 100644
--- a/drivers/usb/chipidea/Kconfig
+++ b/drivers/usb/chipidea/Kconfig
@@ -13,7 +13,6 @@ if USB_CHIPIDEA
config USB_CHIPIDEA_UDC
bool "ChipIdea device controller"
depends on USB_GADGET=y || USB_GADGET=USB_CHIPIDEA
- select USB_GADGET_DUALSPEED
help
Say Y here to enable device controller functionality of the
ChipIdea driver.
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig
index d13c60f..f6a6e07 100644
--- a/drivers/usb/dwc3/Kconfig
+++ b/drivers/usb/dwc3/Kconfig
@@ -2,8 +2,6 @@ config USB_DWC3
tristate "DesignWare USB3 DRD Core Support"
depends on (USB && USB_GADGET)
select USB_OTG_UTILS
- select USB_GADGET_DUALSPEED
- select USB_GADGET_SUPERSPEED
select USB_XHCI_PLATFORM if USB_SUPPORT && USB_XHCI_HCD
help
Say Y or M here if your system has a Dual Role SuperSpeed
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 51ab5fd..2ba0d0e 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -154,7 +154,6 @@ config USB_LPC32XX
config USB_ATMEL_USBA
tristate "Atmel USBA"
- select USB_GADGET_DUALSPEED
depends on AVR32 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
help
USBA is the integrated high-speed USB Device controller on
@@ -163,7 +162,6 @@ config USB_ATMEL_USBA
config USB_FSL_USB2
tristate "Freescale Highspeed USB DR Peripheral Controller"
depends on FSL_SOC || ARCH_MXC
- select USB_GADGET_DUALSPEED
select USB_FSL_MPH_DR_OF if OF
help
Some of Freescale PowerPC and i.MX processors have a High Speed
@@ -179,7 +177,6 @@ config USB_FSL_USB2
config USB_FUSB300
tristate "Faraday FUSB300 USB Peripheral Controller"
depends on !PHYS_ADDR_T_64BIT
- select USB_GADGET_DUALSPEED
help
Faraday usb device controller FUSB300 driver
@@ -227,7 +224,6 @@ config USB_PXA25X_SMALL
config USB_R8A66597
tristate "Renesas R8A66597 USB Peripheral Controller"
- select USB_GADGET_DUALSPEED
help
R8A66597 is a discrete USB host and peripheral controller chip that
supports both full and high speed USB 2.0 data transfers.
@@ -240,7 +236,6 @@ config USB_R8A66597
config USB_RENESAS_USBHS_UDC
tristate 'Renesas USBHS controller'
depends on USB_RENESAS_USBHS
- select USB_GADGET_DUALSPEED
help
Renesas USBHS is a discrete USB host and peripheral controller chip
that supports both full and high speed USB 2.0 data transfers.
@@ -268,7 +263,6 @@ config USB_PXA27X
config USB_S3C_HSOTG
tristate "S3C HS/OtG USB Device controller"
depends on S3C_DEV_USB_HSOTG
- select USB_GADGET_DUALSPEED
help
The Samsung S3C64XX USB2.0 high-speed gadget controller
integrated into the S3C64XX series SoC.
@@ -305,7 +299,6 @@ config USB_S3C2410_DEBUG
config USB_S3C_HSUDC
tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
depends on ARCH_S3C24XX
- select USB_GADGET_DUALSPEED
help
Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
integrated with dual speed USB 2.0 device controller. It has
@@ -315,7 +308,6 @@ config USB_S3C_HSUDC
config USB_MV_UDC
tristate "Marvell USB2.0 Device Controller"
- select USB_GADGET_DUALSPEED
help
Marvell Socs (including PXA and MMP series) include a high speed
USB2.0 OTG controller, which can be configured as high speed or
@@ -338,14 +330,12 @@ config USB_MV_U3D
config USB_GADGET_MUSB_HDRC
tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
depends on USB_MUSB_HDRC
- select USB_GADGET_DUALSPEED
help
This OTG-capable silicon IP is used in dual designs including
the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
config USB_M66592
tristate "Renesas M66592 USB Peripheral Controller"
- select USB_GADGET_DUALSPEED
help
M66592 is a discrete USB peripheral controller chip that
supports both full and high speed USB 2.0 data transfers.
@@ -362,7 +352,6 @@ config USB_M66592
config USB_AMD5536UDC
tristate "AMD5536 UDC"
depends on PCI
- select USB_GADGET_DUALSPEED
help
The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
It is a USB Highspeed DMA capable USB device controller. Beside ep0
@@ -389,7 +378,6 @@ config USB_FSL_QE
config USB_NET2272
tristate "PLX NET2272"
- select USB_GADGET_DUALSPEED
help
PLX NET2272 is a USB peripheral controller which supports
both full and high speed USB 2.0 data transfers.
@@ -413,7 +401,6 @@ config USB_NET2272_DMA
config USB_NET2280
tristate "NetChip 228x"
depends on PCI
- select USB_GADGET_DUALSPEED
help
NetChip 2280 / 2282 is a PCI based USB peripheral controller which
supports both full and high speed USB 2.0 data transfers.
@@ -443,7 +430,6 @@ config USB_GOKU
config USB_EG20T
tristate "Intel EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC"
depends on PCI
- select USB_GADGET_DUALSPEED
help
This is a USB device driver for EG20T PCH.
EG20T PCH is the platform controller hub that is used in Intel's
@@ -470,8 +456,6 @@ config USB_EG20T
config USB_DUMMY_HCD
tristate "Dummy HCD (DEVELOPMENT)"
depends on USB=y || (USB=m && USB_GADGET=m)
- select USB_GADGET_DUALSPEED
- select USB_GADGET_SUPERSPEED
help
This host controller driver emulates USB, looping all data transfer
requests back to a USB "gadget driver" in the same host. The host
@@ -496,15 +480,6 @@ config USB_DUMMY_HCD
endmenu
-# Selected by UDC drivers that support high-speed operation.
-config USB_GADGET_DUALSPEED
- bool
-
-# Selected by UDC drivers that support super-speed opperation
-config USB_GADGET_SUPERSPEED
- bool
- depends on USB_GADGET_DUALSPEED
-
#
# USB Gadget Drivers
#
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 3f72110..f8a481c 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1585,12 +1585,6 @@ composite_resume(struct usb_gadget *gadget)
/*-------------------------------------------------------------------------*/
static struct usb_gadget_driver composite_driver = {
-#ifdef CONFIG_USB_GADGET_SUPERSPEED
- .max_speed = USB_SPEED_SUPER,
-#else
- .max_speed = USB_SPEED_HIGH,
-#endif
-
.unbind = composite_unbind,
.setup = composite_setup,
@@ -1635,8 +1629,7 @@ int usb_composite_probe(struct usb_composite_driver *driver,
driver->iProduct = driver->name;
composite_driver.function = (char *) driver->name;
composite_driver.driver.name = driver->name;
- composite_driver.max_speed =
- min_t(u8, composite_driver.max_speed, driver->max_speed);
+ composite_driver.max_speed = driver->max_speed;
composite = driver;
composite_gadget_bind = bind;
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index e58b164..ae13a10 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -828,7 +828,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
if (value == 0)
data->state = STATE_EP_ENABLED;
break;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
case USB_SPEED_HIGH:
/* fails if caller didn't provide that descriptor... */
ep->desc = &data->hs_desc;
@@ -836,7 +835,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
if (value == 0)
data->state = STATE_EP_ENABLED;
break;
-#endif
default:
DBG(data->dev, "unconnected, %s init abandoned\n",
data->name);
@@ -1324,7 +1322,6 @@ static const struct file_operations ep0_io_operations = {
* Unrecognized ep0 requests may be handled in user space.
*/
-#ifdef CONFIG_USB_GADGET_DUALSPEED
static void make_qualifier (struct dev_data *dev)
{
struct usb_qualifier_descriptor qual;
@@ -1347,7 +1344,6 @@ static void make_qualifier (struct dev_data *dev)
memcpy (dev->rbuf, &qual, sizeof qual);
}
-#endif
static int
config_buf (struct dev_data *dev, u8 type, unsigned index)
@@ -1427,7 +1423,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
dev->dev->bMaxPacketSize0 = dev->gadget->ep0->maxpacket;
req->buf = dev->dev;
break;
-#ifdef CONFIG_USB_GADGET_DUALSPEED
case USB_DT_DEVICE_QUALIFIER:
if (!dev->hs_config)
break;
@@ -1437,7 +1432,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
break;
case USB_DT_OTHER_SPEED_CONFIG:
// FALLTHROUGH
-#endif
case USB_DT_CONFIG:
value = config_buf (dev,
w_value >> 8,
@@ -1763,11 +1757,6 @@ gadgetfs_suspend (struct usb_gadget *gadget)
}
static struct usb_gadget_driver gadgetfs_driver = {
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- .max_speed = USB_SPEED_HIGH,
-#else
- .max_speed = USB_SPEED_FULL,
-#endif
.function = (char *) driver_desc,
.unbind = gadgetfs_unbind,
.setup = gadgetfs_setup,
@@ -1900,6 +1889,10 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
/* triggers gadgetfs_bind(); then we can enumerate. */
spin_unlock_irq (&dev->lock);
+ if (dev->hs_config)
+ gadgetfs_driver.max_speed = USB_SPEED_HIGH;
+ else
+ gadgetfs_driver.max_speed = USB_SPEED_FULL;
value = usb_gadget_probe_driver(&gadgetfs_driver, gadgetfs_bind);
if (value != 0) {
kfree (dev->buf);
diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
index 0e52309..7631d97 100644
--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -83,17 +83,10 @@ struct eth_dev {
#define DEFAULT_QLEN 2 /* double buffering by default */
-
-#ifdef CONFIG_USB_GADGET_DUALSPEED
-
static unsigned qmult = 5;
module_param(qmult, uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");
-#else /* full speed (low speed doesn't do bulk) */
-#define qmult 1
-#endif
-
/* for dual-speed hardware, use deeper queues at high/super speed */
static inline int qlen(struct usb_gadget *gadget)
{
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index 6259f0d..09f6856 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -12,7 +12,6 @@ config USB_MUSB_HDRC
select TWL4030_USB if MACH_OMAP_3430SDP
select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA
select USB_OTG_UTILS
- select USB_GADGET_DUALSPEED
help
Say Y here if your system has a dual role high speed USB
controller based on the Mentor Graphics silicon IP. Then
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index 9517466..d05b220 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -558,14 +558,7 @@ static inline struct usb_gadget *dev_to_usb_gadget(struct device *dev)
*/
static inline int gadget_is_dualspeed(struct usb_gadget *g)
{
-#ifdef CONFIG_USB_GADGET_DUALSPEED
- /* runtime test would check "g->max_speed" ... that might be
- * useful to work around hardware bugs, but is mostly pointless
- */
- return 1;
-#else
- return 0;
-#endif
+ return g->max_speed >= USB_SPEED_HIGH;
}
/**
@@ -575,15 +568,7 @@ static inline int gadget_is_dualspeed(struct usb_gadget *g)
*/
static inline int gadget_is_superspeed(struct usb_gadget *g)
{
-#ifdef CONFIG_USB_GADGET_SUPERSPEED
- /*
- * runtime test would check "g->max_speed" ... that might be
- * useful to work around hardware bugs, but is mostly pointless
- */
- return 1;
-#else
- return 0;
-#endif
+ return g->max_speed >= USB_SPEED_SUPER;
}
/**
--
1.7.7.3
--
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