- 15 Feb, 2021 40 commits
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Dmitry Osipenko authored
Use resource-managed variant of debugfs_create_file(0444) to prepare code for the modularization of the driver. Signed-off-by:
Dmitry Osipenko <digetx@gmail.com> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
Bartosz Golaszewski <bgolaszewski@baylibre.com>
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Dmitry Osipenko authored
Don't cross 80 chars of line length in order to keep formatting of the code consistent. Signed-off-by:
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Baruch Siach authored
Hardware appears to treat zero value as 2^32. Take advantage of this fact to support on/off values of up to UINT_MAX+1 == 2^32. Adjust both .apply and .get_state to handle zero as a special case. Rounded up division result in .get_state can't be zero, since the dividend is now larger than 0. Remove check for this case. Reported-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Analyzed-by:
Russell King <linux@armlinux.org.uk> Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Reviewed-by:
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Baruch Siach authored
PWM on/off registers are limited to UINT_MAX. However the state period and duty_cycle fields are ns values of type u64. There is no reason to limit them to UINT_MAX. Reported-by:
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Baruch Siach authored
Round up the divisions in .get_state() to make applying the read out configuration idempotent in most cases as .apply rounds down. Reported-by:
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Baruch Siach authored
Change 'off' register value calculation from $off = (period - duty_cycle) * clkrate / NSEC_PER_SEC to $off = (period * clkrate / NSEC_PER_SEC) - $on That is, divide the full period value to reduce rounding error. Reported-by:
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Bartosz Golaszewski authored
gpio-mockup doesn't require SYSFS to be selected so drop that bit from the Kconfig text. Signed-off-by:
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Zheng Yongjun authored
Replace a comma between expression statements by a semicolon. Signed-off-by:
Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by:
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Zheng Yongjun authored
Replace a comma between expression statements by a semicolon. Signed-off-by:
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Zheng Yongjun authored
Replace a comma between expression statements by a semicolon. Signed-off-by:
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Zheng Yongjun authored
Replace a comma between expression statements by a semicolon. Signed-off-by:
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Arnd Bergmann authored
The zte zx platform is getting removed, so this driver is no longer needed. Cc: Jun Nie <jun.nie@linaro.org> Cc: Shawn Guo <shawnguo@kernel.org> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
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Kent Gibson authored
The description of the flags field of the struct gpio_v2_line_info mentions "the GPIO lines" while the info only applies to an individual GPIO line. This was accidentally changed from "the GPIO line" during formatting improvements. Reword to "this GPIO line" to clarify and to be consistent with other struct gpio_v2_line_info fields. Fixes: 2cc522d3 ("gpio: uapi: kernel-doc formatting improvements") Signed-off-by:
Kent Gibson <warthog618@gmail.com> Signed-off-by:
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Kent Gibson authored
GPIO CDEV is now optional and required for the selftests so add it to the config. Signed-off-by:
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Kent Gibson authored
Add a port to the GPIO uAPI v2 interface and make it the default. Signed-off-by:
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Kent Gibson authored
gpio-mockup-chardev helper has been obsoleted and removed, so also remove the tools/gpio code that it, and nothing else, was using. Signed-off-by:
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Kent Gibson authored
GPIO Makefile has been greatly simplified so remove references to lines which no longer exist. Signed-off-by:
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Kent Gibson authored
Build restrictions related to the gpio-mockup-chardev helper are no longer relevant so remove them. Signed-off-by:
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Kent Gibson authored
GPIO selftests have changed to new gpio-mockup-cdev helper, so remove old gpio-mockup-chardev helper. Signed-off-by:
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Kent Gibson authored
The GPIO mockup selftests are overly complicated with separate implementations of the tests for sysfs and cdev uAPI, and with the cdev implementation being dependent on tools/gpio and libmount. Rework the test implementation to provide a common test suite with a simplified pluggable uAPI interface. The cdev implementation utilises the GPIO uAPI directly to remove the dependence on tools/gpio. The simplified uAPI interface removes the need for any file system mount checks in C, and so removes the dependence on libmount. The rework also fixes the sysfs test implementation which has been broken since the device created in the multiple gpiochip case was split into separate devices. Fixes: 8a39f597 ("gpio: mockup: rework device probing") Signed-off-by:
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Dmitry Osipenko authored
The GPIO bank wake interrupt setting was erroneously removed after conversion to gpio_irq_chip, thus the wake interrupt programming is broken now. Secondly, the wake_enb of the GPIO driver should be changed only after the successful toggling of the IRQ wake-state. Restore the wake interrupt setting and the programming order. Fixes: efcdca286eef ("gpio: tegra: Convert to gpio_irq_chip") Signed-off-by: -
Uwe Kleine-König authored
Some supported chips (e.g. pca9505) support 40 lines. To be able to give each line a name the length of the gpio-line-names property must be allowed to contain up to 40 entries. Signed-off-by:
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Uwe Kleine-König authored
The previous patch added support for this chip. Add its name to the list of allowed compatibles. Signed-off-by:
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Uwe Kleine-König authored
According to the reference manual "The PCA9505 is identical to the PCA9506 except that it includes 100 kΩ internal pull-up resistors on all the I/Os." So the pca9506 device can be considered identical to the pca9505 for the gpio driver. Signed-off-by:
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Geert Uytterhoeven authored
Add support for the GPIO controller block in the R-Car V3U (R8A779A0) SoC, which is very similar to the block found on other R-Car Gen3 SoCs. However, this block has a new General Input Enable Register (INEN), whose reset state is to have all inputs disabled. Enable input for all available pins in probe and resume, to support the use of the General Input Register (INDT) for reading pin state at all times. This preserves backwards compatibility with other R-Car Gen3 SoCs, as recommended by the Hardware Manual. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by:
Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by:
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Geert Uytterhoeven authored
Currently, the R-Car GPIO driver treats R-Car Gen2 and R-Car Gen3 GPIO controllers the same. However, there exist small differences, like the behavior of the General Input Register (INDT): - On R-Car Gen1, R-Car Gen2, and RZ/G1, INDT only reflects the state of an input pin if the GPIO is configured for input, - On R-Car Gen3 and RZ/G2, INDT always reflects the state of the input pins. Hence to accommodate all variants, the driver does not use the INDT register to read the status of a GPIO line when configured for output, at the expense of doing 2 or 3 register reads instead of 1. Given register accesses are slow, change the .get() and .get_multiple() callbacks to always use INDT to read pin state on SoCs where this is supported. Signed-off-by: -
Geert Uytterhoeven authored
Document the compatible value for the GPIO block in the Renesas R-Car V3U (R8A779A0) SoC. While this GPIO block is mostly compatible with GPIO blocks on R-Car Gen3 SoCs, there are small differences, and one of the new registers needs to be configured differently from its initial reset state. Signed-off-by:
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Bartosz Golaszewski authored
Using a helper local variable to store the address of &pdev->dev adds to readability and allows us to avoid unnecessary line breaks. Signed-off-by:
Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
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Thierry Reding authored
Convert the Tegra GPIO driver to use the gpio_irq_chip infrastructure. This allows a bit of boiler plate to be removed and while at it enables support for hierarchical domains, which is useful to support PMC wake events on Tegra210 and earlier. Signed-off-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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Nobuhiro Iwamatsu authored
Add the GPIO node in Toshiba Visconti5 SoC-specific DT file. And enable the GPIO node in TMPV7708 RM main board's board-specific DT file. Signed-off-by:
Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Reviewed-by:
Punit Agrawal <punit1.agrawal@toshiba.co.jp> Acked-by:
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Nobuhiro Iwamatsu authored
Add entries for Toshiba Visconti GPIO Controller binding and driver. Signed-off-by:
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Nobuhiro Iwamatsu authored
Add the GPIO driver for Toshiba Visconti ARM SoCs. Signed-off-by:
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Nobuhiro Iwamatsu authored
Add bindings for the Toshiba Visconti GPIO Controller. Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-by:
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Aswath Govindraju authored
Add compatible string for AM64 SoC in device tree binding of davinci GPIO modules as the same IP is used. Signed-off-by:
Aswath Govindraju <a-govindraju@ti.com> Acked-by:
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Matti Vaittinen authored
The ROHM BD70528 and BD71828 GPIO drivers only need the regmap pointer from parent. Regmap can be obtained via dev_get_regmap() so do not require parent to populate driver data for that. Signed-off-by:
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Lad Prabhakar authored
The gpio-rcar driver also supports RZ/G SoC's, update the description to reflect this. Signed-off-by:
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by:
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Zheng Yongjun authored
Replace a comma between expression statements by a semicolon. Signed-off-by:
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Lad Prabhakar authored
The mandatory compatible values 'renesas,rcar-gen{1,2,3}-gpio' have been already added to all the respective R-Car Gen{1,2,3} SoC DTSI files, remove the redundant device specific values from the driver. Signed-off-by: -
Jonathan Neuschäfer authored
Currently the HTML output for Documentation/driver-api/gpio/intro.rst doesn't look right. The lines that start with LOW or HIGH are formatted in bold, while the next line after each is not bold. With this patch, the HTML looks better. Signed-off-by:
Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by:
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Jonathan Neuschäfer authored
The gpiod_*_array_* functions take four arguments, not three. Additionally, the formatting of the "value_bitmap" line results in misformatted HTML, so fix that. Signed-off-by:
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