Commit Graph

19 Commits

Author SHA1 Message Date
Bin Liu ffc1d299aa usb: musb: add softconnect for host mode
Add a debugfs interface - softconnect - for host mode to
connect/disconnect the devices without physically remove the
them.

This adds the capability to re-enumerate the devices which are
permanently mounted on the board with the MUSB controller
together.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-07 13:49:23 -05:00
Bin Liu 205845ef70 usb: musb: only set test mode once
The MUSB test mode register can only be set once, otherwise the result
is undefined.

This prevents the debugfs testmode entry to set the register more than
once which causes test failure.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-27 15:51:45 -05:00
Felipe Balbi d1fc4440d7 Linux 3.19-rc5
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Merge tag 'v3.19-rc5' into next

Linux 3.19-rc5

Conflicts:
	drivers/usb/dwc2/gadget.c
	drivers/usb/gadget/udc/bdc/bdc_ep.c
2015-01-19 09:57:20 -06:00
Markus Pargmann fe198e34a4 usb: musb: debugfs: improve copy_from_user() argument
While the code is correct and functions well, it's still
a bit misleading to add the reference operator in from of
the buf argument.

This patch simply removes that operator in order to make
use of buf slightly better to the eyes.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-15 09:41:51 -06:00
Rasmus Villemoes e87c3f80ad usb: musb: Fix a few off-by-one lengths
!strncmp(buf, "force host", 9) is true if and only if buf starts with
"force hos". This was obviously not what was intended. The same error
exists for "force full-speed", "force high-speed" and "test
packet". Using strstarts avoids the error-prone hardcoding of the
prefix length.

For consistency, also change the other occurences of the !strncmp
idiom.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-12-22 10:25:37 -06:00
Felipe Balbi 449a7e99fd usb: musb: debugfs: cope with blackfin's oddities
Blackfin's MUSB implementation lacks a bunch of
registers which they end up not defining a macro
for. In order to avoid build breaks, let's ifdef
out some of the registers from our regdump debugfs
utility so that we don't try to use those on
Blackfin builds.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-12-22 10:24:08 -06:00
Roman Byshko c2365ce5d5 usb: musb: replace hard coded registers with defines
musb registers can be dumped using the file regdump
which is created in debugfs. Up to now  hard coded
register addresses are used for that. Different glue
layers however have different register addresses. The
patch addresses this issue by substituting bare register
addresses with defines.

Signed-off-by: Roman Byshko <rbyshko@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2014-11-18 09:35:12 -06:00
Bill Pemberton 41ac7b3ab7 usb: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Li Yang <leoli@freescale.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Geoff Levand <geoff@infradead.org>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: Olav Kongas <ok@artecdesign.ee>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21 13:27:16 -08:00
Ajay Kumar Gupta 8d2421e68c usb: musb: kill global and static for multi instance
Moved global variable "musb_debugfs_root" and static variable
"old_state" to 'struct musb' to help support multi instance of
musb controller as present on AM335x platform.

Also removed the global variable "orig_dma_mask" and filled the
dev->dma_mask with parent device's dma_mask.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Santhapuri, Damodar <damodar.santhapuri@ti.com>
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-11 17:34:45 +03:00
Felipe Balbi 6c2abcdd4f usb: musb: debugfs: fix error check
debugfs will return NULL on failure, so
we must check for !ptr instead of IS_ERR(ptr).

Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-02-01 11:02:46 +02:00
Felipe Balbi e9e8c85e69 usb: musb: make modules behave better
There's really no point in doing all that
initcall trickery when we can safely let
udev handle module probing for us.

Remove all of that trickery, by moving everybody
to module_init() and making proper use of
platform_device_register() rather than
platform_device_probe().

Tested-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Tested-by: Tasslehoff Kjappfot <tasskjapp@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-01-31 14:18:26 +02:00
Felipe Balbi 7d5b49a202 usb: musb: headers cleanup
Remove a few unnecessary headers from a
few files.

Signed-off-by: Felipe Balbi <balbi@ti.com>
2011-12-12 11:51:52 +02:00
Nicolas Pitre 57c89707da musb_debugfs.c: remove unneeded includes on ARM
Nothing actually requires that <mach/hardware.h>, <mach/memory.h> nor
<asm/mach-types.h> be included here.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Acked-by: Felipe Balbi <balbi@ti.com>
2011-09-26 10:08:31 -04:00
Alexey Dobriyan 57cc7215b7 headers: kobject.h redux
Remove kobject.h from files which don't need it, notably,
sched.h and fs.h.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-10 08:51:44 -08:00
Mathias Nyman 024cfa5943 usb: musb_debugfs: don't use the struct file private_data field with seq_files
seq_files use the private_data field of a file struct for storing a seq_file structure,
data should be stored in seq_file's own private field (e.g. file->private_data->private)
Otherwise seq_release() will free the private data when the file is closed.

Signed-off-by: Mathias Nyman <mathias.nyman@nokia.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-09-20 16:04:56 -07:00
Anand Gadiyar 0936fb5e92 USB: musb: use correct register widths in register dumps
DMA_ADDR and DMA_COUNT are 32-bit registers, not 16-bit.

Marking them as 16-bit in the table causes only the lower
16-bits to be dumped and this is misleading.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-10 14:35:38 -07:00
Tejun Heo c4d80b7d52 usb: musb: update gfp/slab.h includes
Implicit slab.h inclusion via percpu.h is about to go away.  Make sure
gfp.h or slab.h is included as necessary.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:50 -07:00
Felipe Balbi b0f9da7e02 usb: musb: debugfs: musb_exit_debugfs() can be called on probe
when we fail to probe(), we can call musb_exit_debugfs().
Allow that by removing section annotations.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:35 -07:00
Felipe Balbi 7f7f9e2a5a usb: musb: add debugfs support
for now only a simple register dump entry (which can
be rather useful on debugging) and a way to start
test modes.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-05-20 13:21:32 -07:00