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path: root/drivers/gpio/gpio-sa1100.c
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2019-11-07gpio: Use new GPIO_LINE_DIRECTIONMatti Vaittinen1-1/+4
It's hard for occasional GPIO code reader/writer to know if values 0/1 equal to IN or OUT. Use defined GPIO_LINE_DIRECTION_IN and GPIO_LINE_DIRECTION_OUT to help them out. NOTE - for gpio-amd-fch and gpio-bd9571mwv: This commit also changes the return value for direction get to equal 1 for direction INPUT. Prior this commit these drivers might have returned some other positive value but 1 for INPUT. Signed-off-by: Matti Vaittinen <[email protected]> Acked-by: Scott Branden <[email protected]> Reviewed-by: Grygorii Strashko <[email protected]> Reviewed-by: Michal Simek <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Acked-by: Andy Shevchenko <[email protected]> Acked-by: William Breathitt Gray <[email protected]> Acked-by: Kuppuswamy Sathyanarayanan <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2019-06-19treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500Thomas Gleixner1-4/+1
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <[email protected]> Reviewed-by: Enrico Weigelt <[email protected]> Reviewed-by: Kate Stewart <[email protected]> Reviewed-by: Allison Randal <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2018-07-02gpio: sa1100: Include the right headerLinus Walleij1-1/+1
This is a GPIO driver, include only <linux/gpio/driver.h>. Signed-off-by: Linus Walleij <[email protected]>
2017-03-24gpio: sa1100: implement get_direction methodRussell King1-0/+8
Allow gpiolib to read back the current IO direction configuration by implementing the .get_direction callback. This, in part, allows debugfs to report the complete true hardware state rather than the software state. Signed-off-by: Russell King <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2017-03-24gpio: sa1100: convert to use IO accessorsRussell King1-75/+124
Use IO accessors to access the SA1100 registers rather than accessing them directly. Signed-off-by: Russell King <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2017-03-24gpio: sa1100: use sa11x0_gpio_set_wake()Russell King1-7/+12
Use sa11x0_gpio_set_wake() to set the PWER register, as provided by Dmitry some time back. Signed-off-by: Russell King <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2016-09-08gpio: sa1100: fix irq probing for ucb1x00Russell King1-1/+1
ucb1x00 has used IRQ probing since it's dawn to find the GPIO interrupt that it's connected to. However, commit 23393d49fb75 ("gpio: kill off set_irq_flags usage") broke this by disabling IRQ probing on GPIO interrupts. Fix this. Fixes: 23393d49fb75 ("gpio: kill off set_irq_flags usage") Signed-off-by: Russell King <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2016-01-05gpio: convert remaining users to gpiochip_add_data()Linus Walleij1-1/+1
For completion, sweep the floor from all gpiochip_add() usage so we can remove that function and get rid of the function wrapper gpiochip_add(). Signed-off-by: Linus Walleij <[email protected]>
2015-12-26gpio: sa1100: Be sure to clamp return valueLinus Walleij1-1/+1
As we want gpio_chip .get() calls to be able to return negative error codes and propagate to drivers, we need to go over all drivers and make sure their return values are clamped to [0,1]. We do this by using the ret = !!(val) design pattern. Cc: Russell King <[email protected]> Cc: Dmitry Eremin-Solenikov <[email protected]> Cc: Kristoffer Ericson <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner1-2/+1
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <[email protected]> Cc: Julia Lawall <[email protected]> Cc: Jiang Liu <[email protected]>
2015-07-28gpio: kill off set_irq_flags usageRob Herring1-1/+1
set_irq_flags is ARM specific with custom flags which have genirq equivalents. Convert drivers to use the genirq interfaces directly, so we can kill off set_irq_flags. The translation of flags is as follows: IRQF_VALID -> !IRQ_NOREQUEST IRQF_PROBE -> !IRQ_NOPROBE IRQF_NOAUTOEN -> IRQ_NOAUTOEN For IRQs managed by an irqdomain, the irqdomain core code handles clearing and setting IRQ_NOREQUEST already, so there is no need to do this in .map() functions and we can simply remove the set_irq_flags calls. Some users also modify IRQ_NOPROBE and this has been maintained although it is not clear that is really needed as most platforms don't use probing. There appears to be a great deal of blind copy and paste of this code. Signed-off-by: Rob Herring <[email protected]> Cc: Michael Hennerich <[email protected]> Acked-by: Linus Walleij <[email protected]> Cc: Alexandre Courbot <[email protected]> Cc: Ray Jui <[email protected]> Cc: Stephen Warren <[email protected]> Cc: Thierry Reding <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Signed-off-by: Linus Walleij <[email protected]>
2015-07-14gpio/sa1100: Prepare sa1100_gpio_handler for irq argument removalThomas Gleixner1-2/+2
The irq argument of most interrupt flow handlers is unused or merily used instead of a local variable. The handlers which need the irq argument can retrieve the irq number from the irq descriptor. Search and update was done with coccinelle and the invaluable help of Julia Lawall. Signed-off-by: Thomas Gleixner <[email protected]> Cc: Julia Lawall <[email protected]> Cc: Jiang Liu <[email protected]> Cc: Linus Walleij <[email protected]> Cc: Alexandre Courbot <[email protected]> Cc: [email protected]
2015-05-06gpio: Constify irq_domain_opsKrzysztof Kozlowski1-1/+1
The irq_domain_ops are not modified by the driver and the irqdomain core code accepts pointer to a const data. Signed-off-by: Krzysztof Kozlowski <[email protected]> Signed-off-by: Linus Walleij <[email protected]>
2015-01-29ARM: 8281/1: sa1100: move GPIO-related IRQ code to gpio driverDmitry Eremin-Solenikov1-0/+197
As a part of driver consolidation, move GPIO-related IRQ code to drivers/gpio/gpio-sa1100.c. The code does not use GPIOLIB_IRQCHIP (yet), because sa1100 does not have a device for gpios, which is a requirement for GPIOLIB_IRQCHIP. This will be the next step. Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Tested-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2015-01-29ARM: 8278/1: sa1100: split irq handling for low GPIOsDmitry Eremin-Solenikov1-1/+1
Low GPIO pins use an interrupt in SC interrupts space. However it's possible to handle them as if all the GPIO interrupts are instead tied to single GPIO handler, which later decodes GEDR register and chain-calls next IRQ handler. So split first 11 interrupts into system part (IRQ_GPIO0_SC - IRQ_GPIO10_SC) which work exactly like the rest of system controller interrupts and real GPIO interrupts (IRQ_GPIO0..IRQ_GPIO10). A single handler sa1100_gpio_handler then decodes and calls next handler. Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> Tested-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2013-10-29ARM: 7841/1: sa1100: remove complex GPIO interfaceLinus Walleij1-1/+1
The SA1100 was implementing its own variants of gpio_get_value() and gpio_set_value() and only selectively falling back to gpiolib for extended (EGPIO) handling. However the driver in gpio/gpio-sa1100.c already handles the same functionality for these lines, yet remain unused. The only upside would be things like a timing-critical hotpath on bit-banged GPIO, but that kind of things does not seem to happen on these GPIOs, so it is not worth having the extra complexity. Tested with some buttons on the Compaq iPAQ H3630. Cc: Kristoffer Ericson <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-03-25ARM: 7342/2: sa1100: prepare for sparse irq conversionRob Herring1-0/+1
In preparation to convert SA1100 to sparse irq, set .nr_irqs for each machine and explicitly include mach/irqs.h as needed. Signed-off-by: Rob Herring <[email protected]> Signed-off-by: Russell King <[email protected]>
2012-01-13GPIO: sa1100: implement proper gpiolib gpio_to_irq conversionRussell King1-0/+6
The existing gpio_to_irq() implementation on sa1100 only translates validly for internal GPIOs. Since this sub-arch enables GPIOLIB support, this results in buggy translations for non-internal GPIOs. Get rid of the private gpio_to_irq() implementation, replacing it with the .to_irq method in the sa1100 gpio chip instead. Signed-off-by: Russell King <[email protected]> Acked-by: Linus Walleij <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2011-08-22ARM: 7049/1: mach-sa1100: move SA1100 GPIO driver to GPIO subsystemLinus Walleij1-0/+63
As per example from the other ARM boards, push the SA100 GPIO driver down to the GPIO subsystem so it can be consolidated. Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Russell King <[email protected]>
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