Do not use dev->priv as a register base, but use a driver private
struct instead. Also, remove usage of dev->type_data
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add CCCR bits definition for PXA SoC, so that the bootloader
can setup a stable core clock frequency, which is not the
initial reset clock, as required by Intel's PXA27x Processor
family developer's guide, chapter 3.5.5, table 3.7 (clock
frequencies).
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add standard GPIO routings for LCD panels, taken from linux
kernel.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
When copying in verbose mode from a tftp server we might
not know the size of the file being transfered. In this
case print one progress item per 16k instead of one for
each single byte.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds tftp filesystem support. It currently duplicates
significant amounts of the tftp (command) support. This is ok
since we can eventually drop the original tftp command later.
tftp is not really suitable to be handled as a filesystem. It lacks
support for stat, reading directories and other things. Handling
it as a filesystem has one big advantage though: tftp is no special
case for boot scripts and/or commands anymore which makes them simpler.
This implementation has some improvements to the original tftp command.
It supports blocksize negotiation which speeds up transfers if the tftp
server supports it. Also we can determine the filesize to transfer if
the remote end supports it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We currently do not allow to unregister a device when it
has children. However, the return value is seldomly checked.
Also this breaks for hot pluggable devices like USB which we have
to unregister when they disappear. The best way to fix this is to
unregister our children and also the partitions on the unregistered
device.
We unregister the device first and then afterwards the children.
We do this because for example network devices have a miidev as
child which they unregister themselves. So we only have to
unregister the children which are not cleaned up by the drivers,
namely fs devices.
Also, unregister all partitions on a disappearing device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Since get_mtab_entry_by_path() is a bit more flexible now
we no longer have to force the user to mount on the root
directory only. Instead, we can allow to mount on subdirectories
aswell. Nested mounts are still not possible though.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
By putting the fs devices/drivers on a bus on its own we can hook
into the bus remove function to cleanup the fs device. This way
we can unmount a device by simply unregistering the device which
is useful for for example USB mass storage devices. These can now
unregister the assoiated filesystems by unregistering their child
devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We store the fs devices in a list only because we want to
check if the fs driver needs a backingstore or not. The
driver will bail out anyway if it needs a backingstore and
doesn't find one. So we can remove this check and thus remove
the list of fs devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
dev is used only once, so make the code a tiny bit simpler by
not using an extra variable but dereference it when needed directly.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To make the code a bit easier to read. Also, do not allow
to umount / when something else is mounted.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
A fixed partition means that we can't remove it. This is only suitable
for our vital /dev/self0 and /dev/env0 partitions, so remove the fixed
flag.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
As pxafb can rely on a PWM to control backlight, and because
driver dependencies are hard to deal with, remove automatic
enable of PXAFB on probe.
The user should in its environment do a :
- fb0.enable=1
This way, the PWM has been probed and is ready to work, and
the pxafb backlight control works.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add PXA embedded pulse width modulator support. The PWM can
generate signals from 49.6kHz to 1.625MHz.
The driver is for pxa2xx family. The pxa3xx was not handled yet.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Add variables to control the duty_ns and period_ns of PWM
chips. When these variables are set, a call to either
pwm_enable() or pwm_config() is performed to enforce the
setup values.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch adds framework support for PWM (pulse width modulation)
devices.
A new pwm can be registered from a hardware driver using
pwmchip_add(). It can then be requested from a client driver using
pwm_request(). A string is used as a unique identifier for the
pwms. It should usually be initialized by the hardware drivers
using dev_name(dev). The client API is the same as currently
in the Linux Kernel.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The current caching layer only has a single buffer for
writing and reading. The FAT driver often accesses the
fat and then data again, which currently can't be cached.
Reimplement this with a list of cached chunks. The number
of chunks and their sizes are currently hardcoded, but
that could be easily made configurable.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
There seems to be a bug in this mechanism. It's easy to
get the cached fat out of sync with the device. Revert
it for now. This includes a huge write performance drop.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We register a device in eth_register, thus we have to unregister it in
eth_unregister. Also, if the device we unregister is the current device,
we have to set the current eth_device to NULL so that it isn't used anymore.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
First call mii_unregister which is done in the drivers unbind function,
then eth_unregister. Also, remove unregister_device which is done in
eth_unregister.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer
Robert Jarzmik
Jean-Christophe PLAGNIOL-VILLARD