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e9a03add0c
linux/drivers/pinctrl/Kconfig
Sonic Zhang e9a03add0c 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>
2013-09-19 14:37:27 +02:00

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#
# PINCTRL infrastructure and drivers
#
config PINCTRL
bool
if PINCTRL
menu "Pin controllers"
depends on PINCTRL
config PINMUX
bool "Support pin multiplexing controllers"
config PINCONF
bool "Support pin configuration controllers"
config GENERIC_PINCONF
bool
select PINCONF
config DEBUG_PINCTRL
bool "Debug PINCTRL calls"
depends on DEBUG_KERNEL
help
Say Y here to add some extra checks and diagnostics to PINCTRL calls.
config PINCTRL_ABX500
bool "ST-Ericsson ABx500 family Mixed Signal Circuit gpio functions"
depends on AB8500_CORE
select GENERIC_PINCONF
help
Select this to enable the ABx500 family IC GPIO driver
config PINCTRL_AB8500
bool "AB8500 pin controller driver"
depends on PINCTRL_ABX500 && ARCH_U8500
config PINCTRL_AB8540
bool "AB8540 pin controller driver"
depends on PINCTRL_ABX500 && ARCH_U8500
config PINCTRL_AB9540
bool "AB9540 pin controller driver"
depends on PINCTRL_ABX500 && ARCH_U8500
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
depends on ARCH_AT91
select PINMUX
select PINCONF
help
Say Y here to enable the at91 pinctrl driver
config PINCTRL_BAYTRAIL
bool "Intel Baytrail GPIO pin control"
depends on GPIOLIB && ACPI && X86
select IRQ_DOMAIN
help
driver for memory mapped GPIO functionality on Intel Baytrail
platforms. Supports 3 banks with 102, 28 and 44 gpios.
Most pins are usually muxed to some other functionality by firmware,
so only a small amount is available for gpio use.
Requires ACPI device enumeration code to set up a platform device.
config PINCTRL_BCM2835
bool
select PINMUX
select PINCONF
config PINCTRL_IMX
bool
select PINMUX
select PINCONF
config PINCTRL_IMX35
bool "IMX35 pinctrl driver"
depends on OF
depends on SOC_IMX35
select PINCTRL_IMX
help
Say Y here to enable the imx35 pinctrl driver
config PINCTRL_IMX51
bool "IMX51 pinctrl driver"
depends on OF
depends on SOC_IMX51
select PINCTRL_IMX
help
Say Y here to enable the imx51 pinctrl driver
config PINCTRL_IMX53
bool "IMX53 pinctrl driver"
depends on OF
depends on SOC_IMX53
select PINCTRL_IMX
help
Say Y here to enable the imx53 pinctrl driver
config PINCTRL_IMX6Q
bool "IMX6Q/DL pinctrl driver"
depends on OF
depends on SOC_IMX6Q
select PINCTRL_IMX
help
Say Y here to enable the imx6q/dl pinctrl driver
config PINCTRL_IMX6SL
bool "IMX6SL pinctrl driver"
depends on OF
depends on SOC_IMX6SL
select PINCTRL_IMX
help
Say Y here to enable the imx6sl pinctrl driver
config PINCTRL_VF610
bool "Freescale Vybrid VF610 pinctrl driver"
depends on OF
depends on SOC_VF610
select PINCTRL_IMX
help
Say Y here to enable the Freescale Vybrid VF610 pinctrl driver
config PINCTRL_LANTIQ
bool
depends on LANTIQ
select PINMUX
select PINCONF
config PINCTRL_FALCON
bool
depends on SOC_FALCON
depends on PINCTRL_LANTIQ
config PINCTRL_MXS
bool
select PINMUX
select PINCONF
config PINCTRL_IMX23
bool
select PINCTRL_MXS
config PINCTRL_IMX28
bool
select PINCTRL_MXS
config PINCTRL_NOMADIK
bool "Nomadik pin controller driver"
depends on ARCH_U8500 || ARCH_NOMADIK
select PINMUX
select PINCONF
config PINCTRL_STN8815
bool "STN8815 pin controller driver"
depends on PINCTRL_NOMADIK && ARCH_NOMADIK
config PINCTRL_DB8500
bool "DB8500 pin controller driver"
depends on PINCTRL_NOMADIK && ARCH_U8500
config PINCTRL_DB8540
bool "DB8540 pin controller driver"
depends on PINCTRL_NOMADIK && ARCH_U8500
config PINCTRL_ROCKCHIP
bool
select PINMUX
select GENERIC_PINCONF
select GENERIC_IRQ_CHIP
config PINCTRL_SINGLE
tristate "One-register-per-pin type device tree based pinctrl driver"
depends on OF
select PINMUX
select PINCONF
select GENERIC_PINCONF
help
This selects the device tree based generic pinctrl driver.
config PINCTRL_SIRF
bool "CSR SiRFprimaII/SiRFmarco pin controller driver"
depends on ARCH_SIRF
select PINMUX
config PINCTRL_SUNXI
bool
select PINMUX
select GENERIC_PINCONF
config PINCTRL_ST
bool
depends on OF
select PINMUX
select PINCONF
config PINCTRL_TEGRA
bool
select PINMUX
select PINCONF
config PINCTRL_TEGRA20
bool
select PINCTRL_TEGRA
config PINCTRL_TEGRA30
bool
select PINCTRL_TEGRA
config PINCTRL_TEGRA114
bool
select PINCTRL_TEGRA
config PINCTRL_TZ1090
bool "Toumaz Xenif TZ1090 pin control driver"
depends on SOC_TZ1090
select PINMUX
select GENERIC_PINCONF
config PINCTRL_TZ1090_PDC
bool "Toumaz Xenif TZ1090 PDC pin control driver"
depends on SOC_TZ1090
select PINMUX
select PINCONF
config PINCTRL_U300
bool "U300 pin controller driver"
depends on ARCH_U300
select PINMUX
select GENERIC_PINCONF
config PINCTRL_COH901
bool "ST-Ericsson U300 COH 901 335/571 GPIO"
depends on GPIOLIB && ARCH_U300 && PINCTRL_U300
help
Say yes here to support GPIO interface on ST-Ericsson U300.
The names of the two IP block variants supported are
COH 901 335 and COH 901 571/3. They contain 3, 5 or 7
ports of 8 GPIO pins each.
config PINCTRL_SAMSUNG
bool
select PINMUX
select PINCONF
config PINCTRL_EXYNOS
bool "Pinctrl driver data for Samsung EXYNOS SoCs other than 5440"
depends on OF && GPIOLIB && (ARCH_EXYNOS || ARCH_S5PV210)
select PINCTRL_SAMSUNG
config PINCTRL_EXYNOS5440
bool "Samsung EXYNOS5440 SoC pinctrl driver"
depends on SOC_EXYNOS5440
select PINMUX
select PINCONF
config PINCTRL_PALMAS
bool "Pinctrl driver for the PALMAS Series MFD devices"
depends on OF && MFD_PALMAS
select PINMUX
select GENERIC_PINCONF
help
Palmas device supports the configuration of pins for different
functionality. This driver supports the pinmux, push-pull and
open drain configuration for the Palmas series devices like
TPS65913, TPS80036 etc.
config PINCTRL_S3C24XX
bool "Samsung S3C24XX SoC pinctrl driver"
depends on ARCH_S3C24XX
select PINCTRL_SAMSUNG
config PINCTRL_S3C64XX
bool "Samsung S3C64XX SoC pinctrl driver"
depends on ARCH_S3C64XX
select PINCTRL_SAMSUNG
source "drivers/pinctrl/mvebu/Kconfig"
source "drivers/pinctrl/sh-pfc/Kconfig"
source "drivers/pinctrl/spear/Kconfig"
source "drivers/pinctrl/vt8500/Kconfig"
config PINCTRL_XWAY
bool
depends on SOC_TYPE_XWAY
depends on PINCTRL_LANTIQ
endmenu
endif
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