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path: root/drivers/gpio/gpio-ixp4xx.c
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2019-09-03Merge tag 'gpio-v5.4-updates-for-linus' of ↵Linus Walleij1-3/+1
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into devel gpio: updates for v5.4 - use a helper variable for &pdev->dev in gpio-em - tweak the ifdefs in GPIO headers - fix function links in HTML docs - remove an unneeded error message from ixp4xx - use the optional clk_get in gpio-mxc instead of checking the return value - a couple improvements in pca953x - allow to build gpio-lpc32xx on non-lpc32xx targets
2019-08-21gpio/ixp4xx: Register the base PA instead of its VA in fwnodeMarc Zyngier1-1/+1
Do not expose the base VA (it appears in debugfs). Instead, record the PA, which at least can be used to precisely identify the associated irqchip and domain. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-08-15gpio: ixp4xx: Convert to hierarchical GPIOLIB_IRQCHIPLinus Walleij1-215/+62
This modifies the IXP4xx driver to use the new helpers to handle the remapping of parent to child hardware irqs in the gpiolib core. This pulls the majority of the code out of the driver and use the generic code in gpiolib. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Lina Iyer <ilina@codeaurora.org> Cc: Jon Hunter <jonathanh@nvidia.com> Cc: Sowjanya Komatineni <skomatineni@nvidia.com> Cc: Bitan Biswas <bbiswas@nvidia.com> Cc: linux-tegra@vger.kernel.org Cc: Thierry Reding <treding@nvidia.com> Cc: Brian Masney <masneyb@onstation.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20190808123242.5359-2-linus.walleij@linaro.org
2019-07-31gpio: ixp4xx: remove redundant dev_err messageDing Xiang1-3/+1
devm_ioremap_resource already contains error message, so remove the redundant dev_err message Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
2019-05-28gpio: ixp4xx: Use irq_domain_translate_twocell()Linus Walleij1-7/+7
Use standard functions. Eventually we will be able to drop all checks and just assign irq_domain_translate_twocell() to this callback. Cc: Brian Masney <masneyb@onstation.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-04-23gpio: ixp4xx: Add OF probing supportLinus Walleij1-27/+57
This adds device tree probe and registration support for the IXP4xx GPIO driver. Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2019-04-23gpio: ixp4xx: Add driver for the IXP4xx GPIOLinus Walleij1-0/+444
This adds a driver for the IXP4xx GPIO block found in the Intel XScale IXP4xx systems. The GPIO part of this block is pretty straight-forward and just uses the generic MMIO GPIO library. The irqchip side of this driver is hierarchical where the main irqchip will receive a processed level trigger in response to the edge detector of the GPIO block, so for this reason the v2 version of the irqdomain API is used (as well as in the parent IXP4xx irqchip) and masking, unmasking and setting up the type on IRQ happens on several levels. Currently this GPIO controller will grab the parent irqdomain using a special function, but as the platform move toward device tree probing, this will not be needed: we can just look up the parent irqdomain from the device tree. Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>