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| author | Linus Walleij | 2012-05-02 22:56:47 +0200 |
|---|---|---|
| committer | Linus Walleij | 2012-05-11 11:14:16 +0200 |
| commit | dbfe8ca259e1f899ca02ea33d903fa21bbea67c5 (patch) | |
| tree | 84323bb062518a3ffe538162e8ca9e21a7743425 /drivers/pinctrl/Kconfig | |
| parent | pinctrl/nomadik: reuse GPIO debug function for pins (diff) | |
| download | kernel-qcow2-linux-dbfe8ca259e1f899ca02ea33d903fa21bbea67c5.tar.gz kernel-qcow2-linux-dbfe8ca259e1f899ca02ea33d903fa21bbea67c5.tar.xz kernel-qcow2-linux-dbfe8ca259e1f899ca02ea33d903fa21bbea67c5.zip | |
pinctrl/nomadik: implement pin multiplexing
Implements basic pinmux for the Nomadik pin controller.
The plan is to split the existing singular pin config interface
nmk_config_pin(), nmk_config_pins(), that will configure muxing
and other settings at the same time, into two interfaces
by splitting the code in pinmux and pinctrl and eventually
deleting the old interface and its helper functions when all
users are gone.
nmk_gpio_set_mode() and nmk_gpio_get_mode() are two older
interfaces for just configuring muxing/altfunctions that
will also be replaced in the end.
We take some extra care to handle the glitch-avoidance here,
but it is simpler now since there is only one altsetting per
pingroup so we know immediately if we need to avoid altfunc
C glitches for a certain group.
As part of the makeover implement the .request() and .free()
calls on the GPIO chips and have them call back into the
pinctrl layer to reserve GPIOs.
ChangeLog v1->v2:
- Rebased on pinctrl-mergebase-20120418 so we get the latest
driver infrastructure where function count is done by a fixed
value and we can drop a few range checks since this is now
handled by the core.
- Include a GPIO muxing hunk erroneously part of the pin config
patch.
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/Kconfig')
| -rw-r--r-- | drivers/pinctrl/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 5e718201b88f..bbf14dc67ad2 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -39,6 +39,7 @@ config PINCTRL_MMP2 config PINCTRL_NOMADIK bool "Nomadik pin controller driver" depends on ARCH_U8500 + select PINMUX config PINCTRL_DB8500 bool "DB8500 pin controller driver" |