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  1. 25 1月, 2013 7 次提交
  3. 10 7月, 2012 3 次提交
    • P
      sh: pfc: Rudimentary pinctrl-backed GPIO support. · ca5481c6
      由 Paul Mundt 提交于 
      This begins the migration of the PFC core to the pinctrl subsystem.
Initial support is very basic, with the bulk of the implementation simply
being nopped out in such a way to allow registration with the pinctrl
core to succeed.

The gpio chip driver is stripped down considerably now relying purely on
pinctrl API calls to manage the bulk of its operations.

This provides a basis for further PFC refactoring, including decoupling
pin functions from the GPIO API, establishing pin groups, and so forth.
These will all be dealt with incrementally so as to introduce as few
growing and migratory pains to tree-wide PFC pinmux users today.

When the interfaces have been well established and in-tree users have
been migrated off of the legacy interfaces it will be possible to strip
down the core considerably, leading to eventual drivers/pinctrl rehoming.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      ca5481c6
    • P
      sh: pfc: Dumb GPIO stringification. · 72c7afa1
      由 Paul Mundt 提交于 
      This implements fairly simplistic stringification of existing pinmux
GPIOs for easy enum id -> string mapping, which will subsequently be used
by the pinctrl support code.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      72c7afa1
    • P
      sh: pfc: Shuffle PFC support core. · afae021a
      由 Paul Mundt 提交于 
      This follows the intc/clk changes and shuffles the PFC support code under
its own directory. This will facilitate better code sharing, and allow us
to trim down the exported interface by quite a margin.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      afae021a
  5. 20 6月, 2012 3 次提交
    • P
      sh: pfc: Verify pin type encoding size at build time. · 06d5631f
      由 Paul Mundt 提交于 
      The encoding is tightly packed, and future changes (such as
pinconf-generic support) can easily lead to a situation where we violate
the encoding constraints and trample data bit/reg bits. This plugs in
some sanity checks by way of a BUILD_BUG_ON() to blow up if we fail to
fit.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      06d5631f
    • P
      sh: pfc: Kill off unused pinmux bias flags. · 9f65b2b6
      由 Paul Mundt 提交于 
      WANT_PULLUP/DOWN were never interfaced with anything, so just kill them
off.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      9f65b2b6
    • P
      sh: pfc: Split out gpio chip support. · b3c185a7
      由 Paul Mundt 提交于 
      This implements a bit of rework for the PFC code, making the core itself
slightly more pluggable and moving out the gpio chip handling completely.

The API is preserved in such a way that platforms that depend on it for
early configuration are still able to do so, while making it possible to
migrate to alternate interfaces going forward.

This is the first step of chainsawing necessary to support the pinctrl
API, with the eventual goal being able to decouple pin function state
from the gpio API while retaining gpio chip tie-in for gpio pin functions
only, relying on the pinctrl/pinmux API for non-gpio function demux.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      b3c185a7
  7. 09 1月, 2012 2 次提交
  9. 09 12月, 2011 1 次提交
    • M
      sh: pfc: ioremap() support · b0e10211
      由 Magnus Damm 提交于 
      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: NMagnus Damm <damm@opensource.se>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      b0e10211
  11. 11 11月, 2011 3 次提交
  13. 28 10月, 2011 2 次提交
  15. 04 10月, 2010 1 次提交
    • P
      sh: pfc: support pinmux deregistration. · b72421d8
      由 Paul Mundt 提交于 
      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: NPaul Mundt <lethal@linux-sh.org>
      b72421d8
  17. 30 11月, 2009 1 次提交
  19. 27 1月, 2009 3 次提交
  21. 23 10月, 2008 1 次提交
  23. 22 10月, 2008 1 次提交
  25. 21 10月, 2008 2 次提交
  27. 20 10月, 2008 1 次提交
  29. 29 7月, 2008 1 次提交
  31. 21 9月, 2007 1 次提交
    • M
      sh: Add gpio.h stubs for PFC definitions. · dfc5ed2a
      由 Markus Brunner 提交于 
      This adds the PFC definitions for SH-3, as well as consolidating the
gpio.h mess within sh-sci. Stub in sh64, as it's the odd one out
between the sh-sci architectures (sh, sh64, h8300) in this capacity.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
      dfc5ed2a