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7f354fd138
linux/drivers/pinctrl
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Andrew Jeffery 7f354fd138 pinctrl: aspeed: Add core pinconf support 
Several pinconf parameters have a fairly straight-forward mapping onto
the Aspeed pin controller. These include management of pull-down bias,
drive-strength, and some debounce configuration.

Pin biasing largely is managed on a per-GPIO-bank basis, aside from the
ADC and RMII/RGMII pins. As the bias configuration for each pin in a
bank maps onto a single per-bank bit, configuration tables will be
introduced to describe the ranges of pins and the supported pinconf
parameter. The use of tables also helps with the sparse support of
pinconf properties, and the fact that not all GPIO banks support
biasing or drive-strength configuration.

Further, as the pin controller uses a consistent approach for bias and
drive strength configuration at the register level, a second table is
defined for looking up the the bit-state required to enable or query the
provided configuration.

Testing for pinctrl-aspeed-g4 was performed on an OpenPOWER Palmetto
system, and pinctrl-aspeed-g5 on an AST2500EVB as well as under QEMU.
The test method was to set the appropriate bits via devmem and verify
the result through the controller's pinconf-pins debugfs file. This
simultaneously validates the get() path and half of the set() path. The
remainder of the set() path was validated by configuring a handful of
pins via the devicetree with the supported pinconf properties and
verifying the appropriate registers were touched.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-04-24 14:53:58 +02:00
..
aspeed pinctrl: aspeed: Add core pinconf support 2017-04-24 14:53:58 +02:00
bcm pinctrl: bcm: make use of raw_spinlock variants 2017-03-16 16:39:14 +01:00
berlin Pin control bulk changes for the v4.11 kernel cycle: 2017-02-21 16:34:22 -08:00
freescale pinctrl: core: Fix regression caused by delayed work for hogs 2017-01-13 16:25:17 +01:00
intel pinctrl: cherryview: Add support for GMMR GPIO opregion 2017-03-23 14:42:51 +01:00
mediatek pinctrl: mediatek: Use real dependencies 2017-01-26 16:26:50 +01:00
meson pinctrl: meson: meson8b: rename the NAND DQS pin definitions 2017-04-07 09:30:39 +02:00
mvebu pinctrl: armada-37xx: Add gpio support 2017-04-24 13:47:29 +02:00
nomadik pinctrl: nomadik: split up and comments MC0 pins 2016-11-18 09:54:32 +01:00
pxa pinctrl: pxa: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 00:03:04 +02:00
qcom pinctrl: qcom: qdf2xxx: add names to the gpios 2017-03-16 16:39:04 +01:00
samsung Samsung pinctrl drivers update for v4.12: 2017-04-10 09:35:30 +02:00
sh-pfc pinctrl: sh-pfc: r8a7795: Add SCIF_CLK support 2017-03-30 13:43:55 +02:00
sirf pinctrl: sirf: atlas7: make use of raw_spinlock variants 2017-03-16 16:39:15 +01:00
spear pinctrl: spear: make bool drivers explicitly non-modular 2017-02-13 14:25:55 +01:00
stm32 pinctrl: stm32: Add STM32F469 MCU support 2017-04-24 14:26:14 +02:00
sunxi pinctrl: sunxi: make use of raw_spinlock variants 2017-03-16 16:39:16 +01:00
tegra This is the bulk of pin control changes for the v4.8 kernel cycle. 2016-07-28 17:06:51 -07:00
ti pinctrl: ti-iodelay: remove redundant pin < 0 check on unsigned int 2017-01-18 10:23:37 +01:00
uniphier pinctrl: uniphier: make drivers non-modular 2017-03-23 10:09:51 +01:00
vt8500 pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
core.c pinctrl: core: Make pinctrl_init_controller() static 2017-04-24 11:10:13 +02:00
core.h pinctrl: core: Fix regression caused by delayed work for hogs 2017-01-13 16:25:17 +01:00
devicetree.c pinctrl: core: Make dt_free_map optional 2017-01-09 19:41:07 +01:00
devicetree.h pinctrl: core: Use delayed work for hogs 2017-01-03 09:26:16 +01:00
Kconfig pinctrl: Add pincontrol driver for ARTPEC-6 SoC 2017-04-07 11:48:33 +02:00
Makefile pinctrl: armada-37xx: Add pin controller support for Armada 37xx 2017-04-24 11:31:36 +02:00
pinconf-generic.c pinctrl: generic: Add bi-directional and output-enable 2017-04-11 11:01:33 +02:00
pinconf.c pinctrl: Fix spelling typos 2017-03-14 14:42:22 +01:00
pinconf.h pinctrl: Allow configuration of pins from gpiolib based drivers 2017-01-26 15:23:01 +01:00
pinctrl-adi2-bf54x.c
pinctrl-adi2-bf60x.c added tabs instead of spaces 2015-07-16 09:39:01 +02:00
pinctrl-adi2.c pinctrl: adi2: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:20 +02:00
pinctrl-adi2.h
pinctrl-amd.c pinctrl: amd: make use of raw_spinlock variants 2017-03-16 16:39:15 +01:00
pinctrl-amd.h pinctrl: amd: make use of raw_spinlock variants 2017-03-16 16:39:15 +01:00
pinctrl-artpec6.c pinctrl: Add pincontrol driver for ARTPEC-6 SoC 2017-04-07 11:48:33 +02:00
pinctrl-as3722.c pinctrl: as3722: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:21 +02:00
pinctrl-at91-pio4.c pinctrl: at91-pio4: handle suspend to ram 2017-04-07 14:32:51 +02:00
pinctrl-at91.c pinctrl: at91: add support for OUTPUT config 2016-10-31 09:16:46 +01:00
pinctrl-at91.h pinctrl: at91: use own header 2014-10-29 09:28:35 +01:00
pinctrl-coh901.c pinctrl: coh901: fix initconst annotation 2016-02-15 20:40:52 +01:00
pinctrl-coh901.h
pinctrl-da850-pupd.c Merge branch 'ib-pinctrl-genprops' into devel 2017-01-26 15:27:54 +01:00
pinctrl-digicolor.c Revert "pinctrl: digicolor: add missing platform_set_drvdata() call" 2016-06-23 09:50:05 +02:00
pinctrl-falcon.c pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-lantiq.c pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-lantiq.h pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-lpc18xx.c pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
pinctrl-max77620.c pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
pinctrl-oxnas.c pinctrl: oxnas: Add support for OX820 2016-10-24 16:30:14 +02:00
pinctrl-palmas.c pinctrl: Widen the generic pinconf argument from 16 to 24 bits 2017-01-26 15:22:32 +01:00
pinctrl-pic32.c pinctrl: pic32: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:24 +02:00
pinctrl-pic32.h pinctrl: pinctrl-pic32: Add PIC32 pin control driver 2016-02-05 23:54:47 +01:00
pinctrl-pistachio.c pinctrl: pistachio: fix mfio pll_lock pinmux 2016-08-22 15:28:35 +02:00
pinctrl-rockchip.c pinctrl: rockchip: avoid hardirq-unsafe functions in irq_chip 2017-03-28 11:18:50 +02:00
pinctrl-single.c Merge branch 'ib-pinctrl-genprops' into devel 2017-01-26 15:27:54 +01:00
pinctrl-st.c Bulk pin control changes for the v4.10 kernel cycle: 2016-12-13 07:59:10 -08:00
pinctrl-sx150x.c pinctrl / gpio: Introduce .set_config() callback for GPIO chips 2017-01-26 15:27:37 +01:00
pinctrl-tb10x.c pinctrl: tb10x: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:25 +02:00
pinctrl-tz1090-pdc.c pinctrl: tz1090-pdc: Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:26 +02:00
pinctrl-tz1090.c pinctrl: tz1090 Use devm_pinctrl_register() for pinctrl registration 2016-04-21 09:23:26 +02:00
pinctrl-u300.c pinctrl: u300: make u300_pmx_registers static 2016-06-13 09:27:43 +02:00
pinctrl-utils.c pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map 2016-04-01 15:06:36 +02:00
pinctrl-utils.h pinctrl: Rename pinctrl_utils_dt_free_map to pinctrl_utils_free_map 2016-04-01 15:06:36 +02:00
pinctrl-xway.c pinctrl: update my email address 2016-12-30 09:17:02 +01:00
pinctrl-zynq.c pinctrl: zynq: Add a 8 bit wide nand option 2016-11-04 15:19:00 +01:00
pinmux.c pinctrl: pinmux: Fix kerneldoc for pinmux_generic_add_function() 2017-04-07 11:52:09 +02:00
pinmux.h pinctrl: core: Add generic pinctrl functions for managing groups 2017-01-03 09:26:18 +01:00