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path: root/arch/arm/plat-nomadik/gpio.c
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* ARM: 6347/2: nomadik: move nmk_gpio_probe to .devinit.textUwe Kleine-König2010-09-02
| | | | | | | | | | | | | | | | | | | This fixes a section mismatch reported by modpost: WARNING: arch/arm/plat-nomadik/built-in.o(.data+0x100): Section mismatch in reference from the variable nmk_gpio_driver to the function .init.text:nmk_gpio_probe() The variable nmk_gpio_driver references the function __init nmk_gpio_probe() If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console, According to Rabin VINCENT the alternative to use platform_driver_probe won't work because the "platform devices are not yet registered when nmk_gpio_init() is called." Acked-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6354/1: nomadik-gpio: allow control of sleep mode direction and pull upRabin Vincent2010-09-02
| | | | | | | | | | DB8500v2 allows control of direction and pull up/down configuration in sleep mode, instead of switching the pin to input with pull up/down enabled. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6353/1: nomadik-gpio: add SLPM register handing for DB8500v2Rabin Vincent2010-09-02
| | | | | | | | The SLPM register enables/disables wakeup detection on DB8500v2. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6177/1: nomadik-gpio: fix "ignoring return value" warningRabin Vincent2010-06-16
| | | | | | | | | | | | | | arch/arm/plat-nomadik/gpio.c: In function 'nmk_gpio_remove': arch/arm/plat-nomadik/gpio.c:630: warning: ignoring return value of 'gpiochip_remove', declared with attribute warn_unused_result Because this function is marked __exit and this code can't be built as a module, this function is never used. So just remove it, fixing the warning in the process. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6176/1: nomadik-gpio: implement to_irqRabin Vincent2010-06-16
| | | | | | | | | So that gpio_to_irq() works. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6175/1: nomadik-gpio: implement set_wakeRabin Vincent2010-06-16
| | | | | | | | | So that set_irq_wake() works. Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6156/1: nomadik-gpio: switch to core_initcallRabin Vincent2010-06-16
| | | | | | | | | | | | Move the platform driver registration to a core_initcall, instead of an arch_initcall. This will allow us to use gpio related calls in init_machine() (which is an arch_initcall) after adding the gpio platform devices. Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6155/1: nomadik-gpio: add pin configuration APIRabin Vincent2010-06-16
| | | | | | | | | | | Add a pin configuration API to all pin-related configuration to be specified with a single macro and groups of pins to be configured at one go. Based on the PXA MFP implementation. Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6154/1: nomadik-gpio: refactor nmk_gpio_set_modeRabin Vincent2010-06-16
| | | | | | | | | | Extract out a portion of nmk_gpio_set_mode() that can be called with the lock already held. This will be used from the pincfg API. Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6149/1: nomadik-gpio: add function to configure sleep mode behaviourRabin Vincent2010-06-16
| | | | | | | | Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6148/1: nomadik-gpio: add function to configure pullup/pulldownRabin Vincent2010-06-16
| | | | | | | Cc: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6147/1: nomadik-gpio: set val in ->direction_output()Rabin Vincent2010-06-16
| | | | | | | | | | | The ->direction_output() callback needs to set the value it was passed, in addition to setting the direction as output. On this peripheral, we can't set the value before setting the direction, so set it after. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* Merge branch 'devel-stable' into develRussell King2010-05-17
| | | | | | | Conflicts: arch/arm/Kconfig arch/arm/include/asm/system.h arch/arm/mm/Kconfig
* ARM: 6104/1: nomadik-gpio: use clk APIRabin Vincent2010-05-06
| | | | | | | | | | | Add clocks with appropriate names in platforms that use it, and use the clk API in nomadik-gpio. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6102/1: nomadik-gpio: set a default trigger for interruptsRabin Vincent2010-05-06
| | | | | | | | | | | Set a default trigger type for interrupts, otherwise if request_irq is called without specifiying a trigger type, the interrupt will not actually be enabled. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6101/1: nomadik-gpio: don't enable in set_typeRabin Vincent2010-05-06
| | | | | | | | | | | | | | | | | | On this peripheral, setting the trigger type enables the interrupt, and the current set_type() implementation unconditionally enables the interrupt, even if it is called when the interrupt is disabled. Fix set_type() to: - if the interrupt is disabled, defer the actual trigger setting to when it is unmasked - if the interrupt is enabled, change the type immediately by clearing the old type and then re-enabling with the new type. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6100/1: nomadik-gpio: factor out helper to enable/disable irqsRabin Vincent2010-05-06
| | | | | | | | | Remove some nearly-duplicated code to make the following patch simpler. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 6099/1: nomadik-gpio: fix mask/unmaskRabin Vincent2010-05-06
| | | | | | | | | | Mask/unmask should modify the interrupt mask register (RIMSC and FIMSC) not the wakeup mask registers (RWIMSC and FWIMSC). Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 5972/1: nomadik-gpio: convert to platform driverRabin Vincent2010-03-19
| | | | | | | | | | | | | | | | | | | | On the U8500 platform there are four GPIO blocks, each with a 4K address space, including the peripheral identification. However, each of these blocks have a varying number of banks, each of which have 32 GPIOs and an interrupt line. The current nomadik-gpio driver implementation can handle each of these sub-banks easily with one instance each, but cannot as-is be hooked up to them because it is an AMBA driver and it expects to see a peripheral with the appropriate peripheral ids but having only one bank and only one interrupt. Solve this by converting the driver to a platform driver. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 5971/1: nomadik-gpio: mask/ack/unmask the parent irqRabin Vincent2010-03-19
| | | | | | | | | | | | | | | | | Since we register as a chained handler, we need to take care of acking the parent irq. Current code had the acking disabled because just acking the interrupt disables it on some interrupt controllers (like the VIC used on Nomadik). However, not acking at all is incorrect because interrupt controllers like the GIC need an EOI indication, which is done in the ack routine. Solve this by maskacking and unmasking it appropriately, similar to how handle_level_irq operates. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 5970/1: nomadik-gpio: fix spinlock usageRabin Vincent2010-03-19
| | | | | | | | | | | | Fix the incorrect spinlock usage which leads to these compiler warnings: arch/arm/plat-nomadik/gpio.c:60: warning: passing argument 1 of `spinlock_check' from incompatible pointer type arch/arm/plat-nomadik/gpio.c:69: warning: passing argument 1 of `spin_unlock_irqrestore' from incompatible pointer type Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* ARM: 5969/1: nomadik: move gpio to plat-nomadikRabin Vincent2010-03-19
Move the Nomadik GPIO driver to plat-nomadik so that it can also be used on the Ux500 platform. The mach-nomadik include/mach/gpio.h is replaced by one that includes the one now in plat-nomadik, so that code doesn't need to include the one in plat specifically, and can instead use <linux/gpio.h> as usual. Acked-by: Alessandro Rubini <rubini@unipv.it> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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