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linux-next/drivers/gpio
History
Alexandre Courbot 14e85c0e69 gpio: remove gpio_descs global array 
Replace the ARCH_NR_GPIOS-sized static array of GPIO descriptors by
dynamically-allocated arrays for each GPIO chip.

This change makes gpio_to_desc() perform in O(n) (where n is the number
of GPIO chips registered) instead of O(1), however since n is rarely
bigger than 1 or 2 no noticeable performance issue is expected.
Besides this provides more incentive for GPIO consumers to move to the
gpiod interface. One could use a O(log(n)) structure to link the GPIO
chips together, but considering the low limit of n the hypothetical
performance benefit is probably not worth the added complexity.

This patch uses kcalloc() in gpiochip_add(), which removes the ability
to add a chip before kcalloc() can operate. I am not aware of such
cases, but if someone bisects up to this patch then I will be proven
wrong...

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-11-28 11:28:23 +01:00
..
devres.c
gpiolib: devres: use correct structure type name in sizeof
2014-08-17 09:12:35 -05:00
gpio-74x164.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-74xx-mmio.c
GPIO: Add driver for 74xx-ICs with MMIO access
2014-10-21 10:48:04 +02:00
gpio-adnp.c
gpio: adnp: switch to use irqchip helpers
2014-09-02 10:44:01 +02:00
gpio-adp5520.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-adp5588.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-amd8111.c
gpio: amd8111: unmap ioport on failure case
2014-10-27 16:26:35 +01:00
gpio-arizona.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-bcm-kona.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpio-bt8xx.c
gpio: bt8xx: fix release of managed resources
2014-08-29 14:31:43 +02:00
gpio-clps711x.c
Linux 3.14-rc6
2014-03-14 10:26:45 +01:00
gpio-crystalcove.c
gpio: crystalcove: support virtual GPIO
2014-09-25 15:15:30 +02:00
gpio-cs5535.c
gpio: cs5535: Switch to using managed resources with devm_
2014-10-21 10:51:11 +02:00
gpio-da9052.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-da9055.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-davinci.c
gpio: gpio-davinci: remove duplicate check on resource
2014-10-31 09:02:34 +01:00
gpio-dwapb.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpio-em.c
gpio: em: Use dynamic allocation of GPIOs
2014-11-28 11:28:10 +01:00
gpio-ep93xx.c
gpio: ep93xx: Use devm_ioremap_resource()
2014-05-27 16:00:58 +02:00
gpio-f7188x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-ge.c
gpio: ge: Convert to platform driver
2014-04-28 12:35:09 -07:00
gpio-generic.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-grgpio.c
gpio: grgpio: remove irq_domain resources on failure
2014-10-28 16:11:19 +01:00
gpio-ich.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-intel-mid.c
gpio: intel-mid: switch to using gpiolib irqchip helpers
2014-06-19 09:31:16 +02:00
gpio-iop.c
gpio: iop: fix devm_ioremap_resource() return value checking
2014-03-26 10:31:34 +01:00
gpio-it8761e.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-janz-ttl.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-kempld.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-ks8695.c
gpio: ks8695: fix 'else should follow close brace '}''
2014-10-02 16:07:00 +02:00
gpio-lp3943.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-lpc32xx.c
gpio: lpc32xx: Make of_device_id array const
2014-06-19 09:31:16 +02:00
gpio-lynxpoint.c
gpio-lynxpoint: enable input sensing in resume
2014-08-21 07:44:57 -05:00
gpio-max730x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-max732x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-max7300.c
gpio: max7300: use devm_kzalloc()
2013-03-27 16:05:11 +01:00
gpio-max7301.c
gpio: max7301: Reverting "Do not force SPI speed when using OF Platform"
2013-08-23 19:44:28 +02:00
gpio-mc9s08dz60.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mc33880.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mcp23s08.c
gpio: mcp23s08: Add simple IRQ support for SPI devices
2014-11-27 15:01:20 +01:00
gpio-ml-ioh.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mm-lantiq.c
GPIO: MIPS: lantiq: convert gpio-mm-lantiq to OF and of_mm_gpio
2012-05-21 14:31:53 +01:00
gpio-moxart.c
gpio: moxart: remove unnecessary OOM messages
2014-05-09 10:54:56 +02:00
gpio-mpc8xxx.c
gpio-mpc8xxx: add mpc8xxx_gpio_set_multiple function
2014-11-27 15:01:18 +01:00
gpio-mpc5200.c
gpio: remove use of __devinit
2012-11-28 11:39:33 -08:00
gpio-msic.c
gpio/pinctrl: make gpio_chip members typed boolean
2013-12-04 14:42:46 +01:00
gpio-msm-v1.c
gpio: msm-v1: Fix typo in function argument
2014-10-30 15:59:51 +01:00
gpio-msm-v2.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mvebu.c
gpio: mvebu: add suspend/resume support
2014-11-03 14:28:03 +01:00
gpio-mxc.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-mxs.c
gpio: mxs: implement get_direction callback
2014-11-28 11:28:22 +01:00
gpio-octeon.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-omap.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpio-palmas.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-pca953x.c
gpio: pca953x: Drop deprecated DT bindings
2014-08-28 14:19:40 +02:00
gpio-pcf857x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-pch.c
gpio: pch: Build context save/restore only for PM
2014-10-02 16:07:00 +02:00
gpio-pl061.c
gpio: pl061: use BIT() macro instead of shifting bits
2014-05-03 12:16:24 -07:00
gpio-pxa.c
gpio-pxa: gpio0 and gpio1 support on dt
2014-07-07 12:54:28 +02:00
gpio-rc5t583.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-rcar.c
gpio: rcar: Add r8a7793 and r8a7794 support
2014-11-27 15:01:19 +01:00
gpio-rdc321x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-sa1100.c
ARM: 7841/1: sa1100: remove complex GPIO interface
2013-10-29 11:01:02 +00:00
gpio-samsung.c
gpio: samsung: Remove remaining check for CONFIG_S5P_GPIO_DRVSTR
2014-09-23 17:51:39 +02:00
gpio-sch311x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-sch.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-sodaville.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-spear-spics.c
gpio: SPEAr: remove unnecessary OOM messages
2014-05-09 10:55:19 +02:00
gpio-sta2x11.c
gpio/pinctrl: make gpio_chip members typed boolean
2013-12-04 14:42:46 +01:00
gpio-stmpe.c
gpio: stmpe: add verbose debug code
2014-10-02 16:06:59 +02:00
gpio-stp-xway.c
gpio: gpio-stp-xway: remove duplicate check on resource
2014-10-28 17:06:40 +01:00
gpio-sx150x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-syscon.c
gpio: syscon: reuse for keystone 2 socs
2014-09-16 14:42:16 -07:00
gpio-tb10x.c
gpio: gpio-tb10x: remove duplicate check on resource
2014-10-28 17:07:32 +01:00
gpio-tc3589x.c
gpio: handle also nested irqchips in the chained handler set-up
2014-09-26 14:39:08 +02:00
gpio-tegra.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpio-timberdale.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tps6586x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tps65910.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tps65912.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-ts5500.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-twl4030.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-twl6040.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-tz1090-pdc.c
gpio-tz1090-pdc: add TZ1090 PDC gpio driver
2013-07-20 19:03:48 +02:00
gpio-tz1090.c
gpio-tz1090: Replace commas with semi-colons
2014-03-07 11:57:00 +08:00
gpio-ucb1400.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-vf610.c
gpio: vf610: add gpiolib/IRQ chip driver for Vybrid
2014-10-24 14:18:05 +02:00
gpio-viperboard.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-vr41xx.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpio-vx855.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-wm831x.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-wm8350.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-wm8994.c
gpio: remove all usage of gpio_remove retval in driver/gpio
2014-07-22 16:39:26 +02:00
gpio-xgene.c
gpio: xgene: Remove unneeded #ifdef CONFIG_OF guard
2014-09-24 11:03:01 +02:00
gpio-xilinx.c
gpio: Fix ngpio in gpio-xilinx driver
2014-09-24 13:37:38 +02:00
gpio-xtensa.c
gpio: xtensa: fix build when XCHAL_HAVE_CP is 0
2014-02-03 09:11:45 +01:00
gpio-zevio.c
gpio: zevio: Make of_device_id array const
2014-05-09 11:04:08 +02:00
gpio-zynq.c
gpio: remove remaining users of gpiochip_remove() retval
2014-09-23 17:51:17 +02:00
gpiolib-acpi.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpiolib-legacy.c
gpio: remove gpio_ensure_requested()
2014-07-24 18:18:47 +02:00
gpiolib-of.c
gpio: delete unneeded test before of_node_put
2014-08-17 09:12:35 -05:00
gpiolib-sysfs.c
gpio: rename gpio_lock_as_irq to gpiochip_lock_as_irq
2014-10-28 17:30:59 +01:00
gpiolib.c
gpio: remove gpio_descs global array
2014-11-28 11:28:23 +01:00
gpiolib.h
gpio / ACPI: Move event handling registration to gpiolib irqchip helpers
2014-07-28 12:23:57 +02:00
Kconfig
gpio: dwapb: fix compile errors
2014-10-27 18:19:03 +01:00
Makefile
gpio: vf610: add gpiolib/IRQ chip driver for Vybrid
2014-10-24 14:18:05 +02:00