Commit Graph

10 Commits

Author SHA1 Message Date
Magnus Damm e499ada829 sh: pfc: Unlock register support
Add PFC support for a 32-bit unlock register. Needed to
drive the r8a7779 PFC that comes with a funky PMMR register.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09 09:33:57 +09:00
Magnus Damm f78a26f55b sh: pfc: Variable bitfield width config register support
Add support for variable config reg hardware by adding
the macro PINMUX_CFG_REG_VAR(). The width of each bitfield
needs to be passed to the macro, and the correct space must
be consumed by each bitfield in the enum table following the
macro. Data registers still need to have fixed bitfields.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-01-09 09:33:55 +09:00
Magnus Damm b0e10211cb sh: pfc: ioremap() support
Add support for non-entity mapped PFC registers through
the use of struct resource and ioremap()/iounmap().

The PFC main data structure gets updated with a pointer
to a struct resources array that point out all register
windows used by the PFC instance. The register definitions
are kept as physical addresses but the PFC code will do
transparent conversion into virtual addresses whenever
register windows are specified using with struct resource.

To introduce as little performance penalty as possible the
virtual address of each data register is cached in memory.
The virtual address of each configuration register is however
calculated during run time. This because the configuration
is considered slow path so focus is instead put on keeping
memory foot print as small as possible.

The PFC register access  code is in this patch updated from
__raw_readN() / __raw_writeN() into ioreadN() / iowriteN().

This patch is needed to support the PFC block in r8a7779.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-12-09 18:07:15 +09:00
Kuninori Morimoto 9b49139b34 ARM: mach-shmobile: move helper macro PORTCR to sh_pfc.h
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-11 16:45:35 +09:00
Kuninori Morimoto 972c3fb69c ARM: mach-shmobile: move helper macro PORT_xx to sh_pfc.h
This patch moves PORT_xx helper macro to sh_pfc.h,
and it expects CPU_ALL_PORT() macro for each CPU

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-11 16:45:33 +09:00
Kuninori Morimoto bd8d0cbaa0 ARM: mach-shmobile: move helper macro PORT_DATA_xx to sh_pfc.h
This patch move PORT_DATA_xx helper macro to sh_pfc.h.
and pfc-sh7372.c used it

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-11-11 16:45:30 +09:00
Magnus Damm ad2a8e7ea4 sh: pfc: Add GPIO IRQ support
Add GPIO IRQ support to the shared PFC code in drivers/sh/pfc.c

The enums pointed out by a certain GPIO will be matched against
a table for IRQ to enum mappings.

Only the shared PFC code is updated by this patch. SoC specific
changes are also needed to allow platforms to make use of this
feature.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-10-28 15:03:52 +09:00
Magnus Damm 2854aedd05 sh: pfc: Remove unused gpio_in_use member
Remove unused member gpio_in_use from struct pinmux_info.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-10-28 15:03:47 +09:00
Paul Mundt b72421d8aa sh: pfc: support pinmux deregistration.
Presently the pinmux code is a one-way thing, but there's nothing
preventing an unregistration if no one has grabbed any of the pins.
This will permit us to save a bit of memory on systems that require pin
demux for certain peripherals in the case where registration of those
peripherals fails, or they are otherwise not attached to the system.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-10-04 03:54:56 +09:00
Magnus Damm fae4339919 sh: Break out SuperH PFC code
This file breaks out the SuperH PFC code from
arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h
to drivers/sh/pfc.c + include/linux/sh_pfc.h.

Similar to the INTC stuff. The non-SuperH specific
file location makes it possible to share the code
between multiple architectures.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-30 12:02:53 +09:00