- 21 Nov, 2012 9 commits
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Haojian Zhuang authored
Marvell's PXA/MMP silicon also match the behavior of pinctrl-single. Each pin binds to one register. A lot of pins could be configured as gpio. GPIO range is defined as a child node of pinmux in .dtsi file. If those pins are with the same gpio function configuration in the pinmux register, they could be defined in the same GPIO range. For this new child node, two properties are used. reg = <the start of pinmux register in range, size of range> pinctrl-single,gpio: <gpio base in range, the gpio function of the range in the pinmux register> Signed-off-by:
Haojian Zhuang <haojian.zhuang@gmail.com> Acked-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org>
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Haojian Zhuang authored
In Marvell PXA/MMP silicons, input schmitt disable value is 0x40, not 0. So append new config parameter -- input schmitt disable. Signed-off-by:
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Linus Walleij authored
Let's stop spawning the pinctrl driver from the GPIO driver, we have these two mechanisms broken apart now, and they can each probe in isolation. If the GPIO driver cannot find its pin controller (pinctrl-u300), the pin controller core will tell it to defer probing. Reviewed-by:
Stephen Warren <swarren@nvidia.com> Reviewed-by:
Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by:
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Linus Walleij authored
Instead of having the pinctrl driver register the GPIO range for the gpio_chip, making it necessary to instantiate the pin controller from the GPIO driver and pass the GPIO chip as platform data, now let the GPIO chip driver register it's own ranges and have the pinctrl driver look up the GPIO chip from the pinctrl core as necessary. Reviewed-by:
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Linus Walleij authored
This adds a function to the pinctrl core to retrieve the GPIO range associated with a certain pin for a certain controller. This is needed when a pinctrl driver want to look up the corresponding struct gpio_chip for a certain pin. As the GPIO drivers can now create these ranges themselves, the pinctrl driver no longer knows about all its associated GPIO chips. Reviewed-by:
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Linus Walleij authored
If we try to create a range for a certain GPIO chip and the target pin controller is not yet available it may return a probe deferral error code, so handle this all the way our by checking the error code. Reviewed-by:
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Linus Walleij authored
This makes the pinctrl_find_and_add_gpio_range() return -EPROBE_DEFER if the range hosting pin controller cannot be located. We may assume that the common case for why adding a range fails is that the targe pin controller device has not probed yet. Reviewed-by:
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Linus Walleij authored
Rename the function find_pinctrl_and_add_gpio_range() to pinctrl_find_and_add_gpio_range() so as to be consistent with the rest of the functions. Reviewed-by:
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Linus Walleij authored
Like with commit 3c739ad0 it is not always enough to specify all the pins of a gpio_chip from offset zero to be added to a pin map range, since the mapping from GPIO to pin controller may not be linear at all, but need to be broken into a few consecutive sub-ranges or 1-pin entries for complicated cases. The ranges may also be sparse. This alters the signature of the function to accept offsets into both the GPIO-chip local pinspace and the pin controller local pinspace. Reviewed-by:
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- 15 Nov, 2012 15 commits
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Axel Lin authored
They are not referenced outside of this file, make them static. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Acked-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Axel Lin authored
of_match_device() may return NULL. Signed-off-by:
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Haojian Zhuang authored
Dump pinmux register value, not only function part in the pinmux register. Also fix the issue on caluclating pin offset. The last parameter should be pin number, not register offset. Signed-off-by:
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Viresh Kumar authored
SPEAr SoC's don't do anything in clk_prepare() of plgpio driver, so there is no need to call this routine multiple times. Just call it once at probe. Signed-off-by:
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Axel Lin authored
This driver allows clk_get() failure, and still work without it. This patch adds !IS_ERR(plgpio->clk) checking in plgpio_request() error path so we only call clk_disable_unprepare() if clk_prepare_enable() is called. Signed-off-by:
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Axel Lin authored
Currently get_gpio_pingroup() may return NULL or ERR_PTR(-EINVAL) when no gpio_pingroup found. The caller in gpio_request_endisable() only checks if the return value is NULL. Return ERR_PTR(-EINVAL) for get_gpio_pingroup() causes problem and seems not necessary. Signed-off-by:
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Axel Lin authored
Return -ENOMEM instead of 0 if irq_domain_add_linear fails. Signed-off-by:
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Axel Lin authored
Current code does not work if count > 1, fix it. Signed-off-by:
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Axel Lin authored
Current code sets "pin_reg = &info->pin_regs[i];" in each loop iteration, so in the case of no-match, pin_reg is not NULL. Signed-off-by:
Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by:
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Axel Lin authored
They are not referenced outside of this file, make them static. Signed-off-by:
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Patrice Chotard authored
The clkout group is split into groups clkout1 and clkout2 which allows pins cklkout1 and clkout2 to be muxed separately. Signed-off-by:
Patrice Chotard <patrice.chotard@stericsson.com> Signed-off-by:
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Patrice Chotard authored
The clkout group is split into groups clkout1 and clkout2 which allows pins cklkout1 and clkout2 to be muxed separately. Signed-off-by:
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Axel Lin authored
They are not used, remove them. Signed-off-by:
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Axel Lin authored
Use managed resources API to simplify the code. Also ensure we do request mem_region before ioremap. Signed-off-by:
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Axel Lin authored
Then we can remove "select PINMUX && PINCONF" from PINCTRL_TEGRA{20,30}. This simplifies the dependency. Signed-off-by:
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- 13 Nov, 2012 2 commits
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Axel Lin authored
Then we can remove "select PINMUX && PINCONF" from PINCTRL_IMX{23,28}. This simplifies the dependency. Signed-off-by:Shawn Guo <shawn.guo@linaro.org> Signed-off-by:
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Axel Lin authored
They are not referenced outside of this file, make them static. Signed-off-by:
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- 11 Nov, 2012 14 commits
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Axel Lin authored
Currently pinmux_enable_setting does not release all taken pins if ops->enable() returns error. This patch ensures all taken pins are released in any error paths. Signed-off-by:
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Axel Lin authored
Both ltq_pinctrl_dt_node_to_map() and ltq_pinctrl_dt_free_map() are not referenced outside of this file. Make them static. Signed-off-by:
John Crispin <blogic@openwrt.org> Signed-off-by:
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Axel Lin authored
Current code adds empty ltq_pmx_disable() because pinmux_check_ops() requires this callback to be defined. This is not required since commit 02b50ce4 "pinctrl: make pinmux disable function optional". Thus remove ltq_pmx_disable() function. Signed-off-by:
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Shiraz Hashim authored
Different SPEAr SoCs have different approach to configure pins as gpios. Some configure a group of gpios with single register bit and others have one bit per gpio pin. Only earlier one is implemented till now, this patch adds support for later one. Here we add callbacks to SoC specific code to configure gpios in gpio_request_enable(). That will do additional SoC specific configuration to enable gpio pins. We also implement this callback for SPEAr1340 in this patch. Signed-off-by:
Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by:
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Axel Lin authored
They are not referenced outside respective driver. Signed-off-by:
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Linus Walleij authored
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Linus Walleij authored
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Viresh Kumar authored
This patch adds plgpio nodes in SPEAr DT files. Signed-off-by:
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Viresh Kumar authored
Most of SPEAr SoCs, which support pinctrl, can configure & use pads as gpio. This patch gpio enable support for SPEAr pinctrl drivers. Signed-off-by:
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Linus Walleij authored
The <*/gpio.h> includes are updated again: now we need to account for the problem introduced by commit: 595679a8038584df7b9398bf34f61db3c038bfea "gpiolib: fix up function prototypes etc" Actually we need static inlines in include/asm-generic/gpio.h as well since we may have GPIOLIB but not PINCTRL. Make sure to move all the CONFIG_PINCTRL business to the end of the file so we are sure we have declared struct gpio_chip. And we need to keep the static inlines in <linux/gpio.h> but here for the !CONFIG_GENERIC_GPIO case, and then we may as well throw in a few warnings like the other prototypes there, if someone would have the bad taste of compiling without GENERIC_GPIO even. Signed-off-by: -
Linus Walleij authored
The fact that of_gpiochip_add_pin_range() and gpiochip_add_pin_range() share too much code is fragile and will invariably mean that bugs need to be fixed in two places instead of one. So separate the concerns of gpiolib.c and gpiolib-of.c and have the latter call the former as back-end. This is necessary also when going forward with other device descriptions such as ACPI. This is done by: - Adding a return code to gpiochip_add_pin_range() so we can reliably check whether this succeeds. - Get rid of the custom of_pinctrl_add_gpio_range() from pinctrl. Instead create of_pinctrl_get() to just retrive the pin controller per se from an OF node. This composite function was just begging to be deleted, it was way to purpose-specific. - Use pinctrl_dev_get_name() to get the name of the retrieved pin controller and use that to call back into the generic gpiochip_add_pin_range(). Now the pin range is only allocated and tied to a pin controller from the core implementation in gpiolib.c. Signed-off-by: -
Linus Walleij authored
This makes us call gpiochio_remove_pin_ranges() in the gpiochip_remove() function, so we get rid of ranges when freeing the chip. Reviewed-by:
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Linus Walleij authored
Commit 69e1601bca88809dc118abd1becb02c15a02ec71 "gpiolib: provide provision to register pin ranges" Introduced both of_gpiochip_remove_pin_range() and gpiochip_remove_pin_ranges(). But the contents are exactly the same so remove the OF one and rely on the range deletion in the core. Reviewed-by:
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Linus Walleij authored
Commit 69e1601bca88809dc118abd1becb02c15a02ec71 "gpiolib: provide provision to register pin ranges" Declared the of_gpiochip_[add|remove]_pin_range() global while they should be static as they are only ever used in this file. Let's convert them to static. Reviewed-by:
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