diff options
author | Sonic Zhang <sonic.zhang@analog.com> | 2013-09-03 16:28:59 +0800 |
---|---|---|
committer | Linus Walleij <linus.walleij@linaro.org> | 2013-09-19 14:37:27 +0200 |
commit | e9a03add0c6ed5341fc59ff9c76843c2888a33fa (patch) | |
tree | 3530e2d42d4bcd01c13cc3024cad2b4d8624ce6a /drivers/pinctrl/Kconfig | |
parent | 272b98c6455f00884f0350f775c5342358ebb73f (diff) |
pinctrl: ADI PIN control driver for the GPIO controller on bf54x and bf60x.
The new ADI GPIO2 controller was introduced since the BF548 and BF60x
processors. It differs a lot from the old one on BF5xx processors. So,
create a pinctrl driver under the pinctrl framework.
- Define gpio ports and pin interrupt controllers as individual platform
devices.
- Register a pinctrl driver for the whole GPIO ports and pin interrupt
devices.
- Probe pint devices before port devices. Put device instances into
the global gpio and pint lists.
- Define peripheral, irq and gpio reservation bit masks for each gpio
port as runtime resources.
- Save and restore gpio port and pint status MMRs in syscore PM functions.
- Create the plug-in subdrivers to hold the pinctrl soc data for bf54x
and bf60x. Add soc data into struct adi_pinctrl. Initialize the soc data
in pin controller probe function. Get the pin groups and functions via
the soc data reference.
- Call gpiochip_add_pin_range() in gpio device probe function to register
range cross reference between gpio device and pin control device.
- Get range by pinctrl_find_gpio_range_from_pin(), find gpio_port object
by container_of() and find adi_pinctrl by pin control device name.
- Handle peripheral and gpio requests in pinctrl operation functions.
- Demux gpio IRQs via the irq_domain created by each GPIO port.
v2-changes:
- Remove unlinke() directive.
v3-changes:
- Rename struct adi_pmx to adi_pinctrl.
- Fix the comments of struct gpio_pint.
- Remove unused pin_base in struct gpio_port.
- Change pint_assign into bool type.
- Add comments about the relationship between pint device and port device
to the driver header.
- Use BIT macro to shift bit.
- Remove all bitmap reservation help functions. Inline reservation functions
into the actual code.
- Remove gpio and offset mutual reference help functions.
- Remove all help functions to find gpio_port and adi_pinctrl structs. Get
range by pinctrl_find_gpio_range_from_pin(), find gpio_port object by
container_of() and find adi_pinctrl by pin control device name.
- Pass bool type usage variable to port_setup help function.
- Separate long bit operations into several lines and add comments.
- Use debugfs to output all GPIO request information.
- Avoid to set drvdata to NULL
- Add explanation to function adi_gpio_init_int()
- Call gpiochip_add_pin_range() in gpio device probe function to register
range cross reference between gpio device and pin control device.
- Remove the reference to pin control device from the gpio_port struct.
Remove the reference list to gpio device from the adi_pinctrl struct.
Replace the global adi_pinctrl list with adi_gpio_port_list. Walk through
the gpio list to do power suspend and resume operations.
- Remove the global GPIO base from struct adi_pinctrl, define pin base in
the platform data for each GPIO port device.
- Initialize adi_pinctrl_setup in arch_initcall().
- print the status of triggers, whether it is in GPIO mode, if it is
flagged to be used as IRQ, etc in adi_pin_dbg_show().
- Create the plug-in subdrivers to hold the pinctrl soc data for bf54x
and bf60x. Add soc data into struct adi_pinctrl. Initialize the soc data
in pin controller probe function. Get the pin groups and functions via
the soc data reference.
v4-changes:
- remove useless system_state checking.
- replace dev_err with dev_warn in both irq and gpio pin cases.
- comment on relationship between irq type and invert operation.
- It is not necessary to check the reservation mode of the requested
pin in IRQ chip operation. Remove the reservation map.
- Use existing gpio/pinctrl subsystem debugfs files. Remove pinctrl-adi2
driver specific debugfs output.
- Add linkport group and function information for bf60x.
- Separate uart and ctsrts pins into 2 groups.
- Separate APAPI and alternative ATAPI pins into 2 groups.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/Kconfig')
-rw-r--r-- | drivers/pinctrl/Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index b6e864e8c9e..f45a21c57e0 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -49,6 +49,23 @@ config PINCTRL_AB8505 bool "AB8505 pin controller driver" depends on PINCTRL_ABX500 && ARCH_U8500 +config PINCTRL_ADI2 + bool "ADI pin controller driver" + select PINMUX + select IRQ_DOMAIN + help + This is the pin controller and gpio driver for ADI BF54x, BF60x and + future processors. This option is selected automatically when specific + machine and arch are selected to build. + +config PINCTRL_BF54x + def_bool y if BF54x + select PINCTRL_ADI2 + +config PINCTRL_BF60x + def_bool y if BF60x + select PINCTRL_ADI2 + config PINCTRL_AT91 bool "AT91 pinctrl driver" depends on OF |