This adds a driver for the U300 pinmux portions of the system
controller "SYSCON". It also serves as an example of how to use
the pinmux subsystem. This driver also houses the platform data
for the only supported platform.
This deletes the old U300 driver in arch/arm/mach-u300 and
replace it with a driver using the new subsystem.
The new driver is considerably fatter than the old one, but it
also registers all 467 pins of the system and adds the power
and EMIF pin groups and corresponding functions. The idea
is to use this driver as a a reference for other
implementation so it needs to be as complete and verbose
as possible.
Reviewed-by: Barry Song <21cnbao@gmail.com>
[Fixup for changed function names and semantics in the v10 patch]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This rewrites the U300 GPIO so as to use gpiolib and
struct gpio_chip instead of just generic GPIO, hiding
all the platform specifics and passing in GPIO chip
variant as platform data at runtime instead of the
compiletime kludges.
As a result <mach/gpio.h> is now empty for U300 and
using just defaults.
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Debian kernel maintainers <debian-kernel@lists.debian.org>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
When we have only dual-RAM configurations, the SEMI (shared
memory interface) must always be enabled.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The U300 had a special variant where a memory was shared
between two CPU:s and only one part of memory was
accessible for the kernel. However it is now seriously
legacy and only create problems for kernel consolidation,
so let's retire it.
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This adds a U300 board configuration for the PL022 SSP/SPI
PrimeCell driver recently merged to the 2.6.31-rc series.
Further it adds a dummy loopback SPI chip that can be used
for testing the SPI functionality on a running system using
the loopback mode of PL022.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds core support for the ST-Ericsson U300 series
platforms: U300, U330, U335 and U365. Supports memory
mappings, interrupt controller, system timer (clocksource
and clockevents), and binds to the existing drivers for
the PrimeCells used in this design: PL190 (VIC), PL180
(MMC/SD host) and PL011 (UART). This is intented to serve
as starting point for our mainling work, more patches to
follow.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
