To avoid printk() overhead while debugging, this patch implements the
foundation of tracepoints logging for musb driver to make debug
easier.
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is based on initial code to get the Allwinner sunxi musb controller
supported by Chen-Yu Tsai and Roman Byshko.
This adds support for the Allwinner sunxi musb controller in both host only
and otg mode. Peripheral only mode is not supported, as no boards use that.
This has been tested on a cubietruck (A20 SoC) and an UTOO P66 tablet
(A13 SoC) with a variety of devices in host mode and with the g_serial gadget
driver in peripheral mode, plugging otg / host cables in/out a lot of times
in all possible imaginable plug orders.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Add support for Ingenic JZ4740 USB Device Controller through a
specific musb glue layer.
JZ4740 UDC not being OTG compatible and missing some hardware
registers, this musb glue layer is written from scratch to be used in
gadget mode only and take silicon design specifics into account.
Signed-off-by: Apelete Seketeli <apelete@seketeli.net>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This driver is currently used by musb' cppi41 couter part. I may merge
both dma engine user of musb at some point but not just yet.
The driver seems to work in RX/TX mode in host mode, tested on mass
storage. I increaed the size of the TX / RX transfers and waited for the
core code to cancel a transfers and it seems to recover.
v2..3:
- use mall transfers on RX side and check data toggle.
- use rndis mode on tx side so we haveon interrupt for 4096 transfers.
- remove custom "transferred" hack and use dmaengine_tx_status() to
compute the total amount of data that has been transferred.
- cancel transfers and reclaim descriptors
v1..v2:
- RX path added
- dma mode 0 & 1 is working
- device tree nodes re-created.
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <djbw@fb.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This moves the two instances from the big node into two child nodes. The
glue layer ontop does almost nothing.
There is one devices containing the control module for USB (2) phy,
(2) usb and later the dma engine. The usb device is the "glue device"
which contains the musb device as a child. This is what we do ever since.
The new file musb_am335x is just here to prob the new bus and populate
child devices.
There are a lot of changes to the dsps file as a result of the changes:
- musb_core_offset
This is gone. The device tree provides memory ressources information
for the device there is no need to "fix" things
- instances
This is gone as well. If we have two instances then we have have two
child enabled nodes in the device tree. For instance the SoC in beagle
bone has two USB instances but only one has been wired up so there is
no need to load and init the second instance since it won't be used.
- dsps_glue is now per glue device
In the past there was one of this structs but with an array of two and
each instance accessed its variable depending on the platform device
id.
- no unneeded copy of structs
I do not know why struct dsps_musb_wrapper is copied but it is not
necessary. The same goes for musb_hdrc_platform_data which allocated
on demand and then again by platform_device_add_data(). One copy is
enough.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This makes building the actual object files optional to the selected
mode, which saves users who know which kind of USB mode support they
need some binary size.
Unimplemented functions are stubbed out with static inline functions.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
TI81XX platform has two musb interfaces and uses CPPI4.1 DMA engine.
It has builtin USB PHYs as AM35x. The current set of patches adds support
for one instance and only in PIO mode.
[ balbi@ti.com : make it compile and solve a "may be used
uninitialized" warning ]
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Ravi Babu <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
The logic to allow only one DMA driver in MUSB is currently
flawed, because it also allows picking no DMA driver at all
and also not selecting PIO mode.
Using a choice statement makes this foolproof for now and
also simplifies the Makefile.
Unfortunately, we will have to revisit this when we start
supporting multiple ARM platforms in a single kernel binary,
because at that point we will actually need to select
multiple DMA drivers and pick the right one at run-time.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
the MUSB IP is always OTG, so there's no point
in adding so many ifdefs on the code. Drop those
and always compile the driver for OTG support.
This also allows us to drop the useless "driver
mode" choice. For doing that, we need to make
musb depend on both Host and Peripheral side.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We have a generic way of enabling/disabling
different debug messages on a driver called
DYNAMIC_PRINTK. Anyone interested in enabling
just part of the debug messages, please read
the documentation under:
Documentation/dynamic-debug-howto.txt
for information on how to use that great
infrastructure.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Initial support for u8500 and u5500 platform.
Signed-off-by: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
Later patches will come to split power management
code from musb_core and move it completely to HW
glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Just adding its own platform_driver, not really
using it yet.
When all HW glue layers are converted, more patches
will come to split power management code from musb_core
and move it completely to HW glue layer.
Signed-off-by: Felipe Balbi <balbi@ti.com>
This will make things simpler when choosing which
glue layer to compile. It avoids a lot of magic
around the "default" Kconfig option and lets the
user choose what exactly s/he wants to compile.
Signed-off-by: Felipe Balbi <balbi@ti.com>
AM35x has musb interface and uses CPPI4.1 DMA engine.
Current patch supports only PIO mode. DMA support can be
added later once basic CPPI4.1 DMA patch is accepted.
Also added USB_MUSB_AM35X which is required to differentiate musb ips
between OMAP3x and AM35x. This config would be used to for below
purposes,
- Select am35x.c instead of omap2430.c for compilation
at drivers/usb/musb directory. Please note there are
significant differneces in these two files as musb ip
in quite different on AM35x.
Please note that in multi omap configuration only omap2430.c
file will get compiled and we would require to select only
AM35x based board config to compile am35x.c
- Select workaround codes applicable for AM35x musb issues.
one such workaround is for bytewise read issue on AM35x.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
For all modules, change <module>-objs to <module>-y; remove
if-statements and replace with lists using the kbuild idiom; move
flags to the top of the file; and fix alignment while trying to
maintain the original scheme in each file.
None of the dependencies are modified.
Signed-off-by: matt mooney <mfm@muteddisk.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove the unexistent CONFIG_USB_INVENTRA_MUSB_HAS_AHB_ID
option from our Makefile.
Problem reported by Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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>
This patch updates the Makefile to build the
MUSB driver for OMAP4. It also sets the Kconfig
options for OMAP4.
Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
CONFIG_ARCH_DAVINCI now embraces both the "real" DaVinci and DA8xx/OMAP-L1x --
on which the DaVinci glue layer won't work. Change the Makefile dependency to
CONFIG_ARCH_DAVINCI_DMx which corresponds to "real" DaVinci.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We can change debugging level on the fly via
/sys/module/musb_hdrc/parameters/debug.
We can also get rid of the LOGLEVEL facility in Kconfig
and rely only in module parameter.
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Drivers should not add procfs. The functionality in the old
procfs file will be moved to debugfs.
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds support for MUSB and TUSB controllers
integrated into omap2430 and davinci. It also adds support
for external tusb6010 controller.
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
