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d468bf9eca
It is currently often possible in many GPIO drivers to request a GPIO line to be used as IRQ after calling gpio_to_irq() and, as the gpiolib is not aware of this, set the same line to output and start driving it, with undesired side effects. As it is a bogus usage scenario to request a line flagged as output to used as IRQ, we introduce APIs to let gpiolib track the use of a line as IRQ, and also set this flag from the userspace ABI. The API is symmetric so that lines can also be flagged from .irq_enable() and unflagged from IRQ by .irq_disable(). The debugfs file is altered so that we see if a line is reserved for IRQ. Cc: Enric Balletbo i Serra <eballetbo@gmail.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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| .. | ||
| devres.c | ||
| gpio-74x164.c | ||
| gpio-adnp.c | ||
| gpio-adp5520.c | ||
| gpio-adp5588.c | ||
| gpio-amd8111.c | ||
| gpio-arizona.c | ||
| gpio-bcm-kona.c | ||
| gpio-bt8xx.c | ||
| gpio-clps711x.c | ||
| gpio-cs5535.c | ||
| gpio-da9052.c | ||
| gpio-da9055.c | ||
| gpio-davinci.c | ||
| gpio-em.c | ||
| gpio-ep93xx.c | ||
| gpio-f7188x.c | ||
| gpio-ge.c | ||
| gpio-generic.c | ||
| gpio-grgpio.c | ||
| gpio-ich.c | ||
| gpio-intel-mid.c | ||
| gpio-iop.c | ||
| gpio-it8761e.c | ||
| gpio-janz-ttl.c | ||
| gpio-kempld.c | ||
| gpio-ks8695.c | ||
| gpio-lpc32xx.c | ||
| gpio-lynxpoint.c | ||
| gpio-max730x.c | ||
| gpio-max732x.c | ||
| gpio-max7300.c | ||
| gpio-max7301.c | ||
| gpio-mc9s08dz60.c | ||
| gpio-mc33880.c | ||
| gpio-mcp23s08.c | ||
| gpio-ml-ioh.c | ||
| gpio-mm-lantiq.c | ||
| gpio-mpc8xxx.c | ||
| gpio-mpc5200.c | ||
| gpio-msic.c | ||
| gpio-msm-v1.c | ||
| gpio-msm-v2.c | ||
| gpio-mvebu.c | ||
| gpio-mxc.c | ||
| gpio-mxs.c | ||
| gpio-octeon.c | ||
| gpio-omap.c | ||
| gpio-palmas.c | ||
| gpio-pca953x.c | ||
| gpio-pcf857x.c | ||
| gpio-pch.c | ||
| gpio-pl061.c | ||
| gpio-pxa.c | ||
| gpio-rc5t583.c | ||
| gpio-rcar.c | ||
| gpio-rdc321x.c | ||
| gpio-sa1100.c | ||
| gpio-samsung.c | ||
| gpio-sch.c | ||
| gpio-sodaville.c | ||
| gpio-spear-spics.c | ||
| gpio-sta2x11.c | ||
| gpio-stmpe.c | ||
| gpio-stp-xway.c | ||
| gpio-sx150x.c | ||
| gpio-tc3589x.c | ||
| gpio-tegra.c | ||
| gpio-timberdale.c | ||
| gpio-tnetv107x.c | ||
| gpio-tps6586x.c | ||
| gpio-tps65910.c | ||
| gpio-tps65912.c | ||
| gpio-ts5500.c | ||
| gpio-twl4030.c | ||
| gpio-twl6040.c | ||
| gpio-tz1090-pdc.c | ||
| gpio-tz1090.c | ||
| gpio-ucb1400.c | ||
| gpio-viperboard.c | ||
| gpio-vr41xx.c | ||
| gpio-vx855.c | ||
| gpio-wm831x.c | ||
| gpio-wm8350.c | ||
| gpio-wm8994.c | ||
| gpio-xilinx.c | ||
| gpiolib-acpi.c | ||
| gpiolib-of.c | ||
| gpiolib.c | ||
| Kconfig | ||
| Makefile | ||