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* gpio: Add raspberrypi exp gpio driverSascha Hauer2020-01-083-0/+280
| | | | | | Taken from the kernel adopted to barebox. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* of/gpio: Support gpio-line-names propertySascha Hauer2019-11-271-1/+15
| | | | | | | GPIOs can be given names with the gpio-line-names device tree property. This patch adds support for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: Introduce GPIO namesSascha Hauer2019-11-271-6/+25
| | | | | | | | | | | This introduces GPIO names. So far we only have labels which are given by the requester. In contrast names are given by the provider and do not change depending on whoever requests a GPIO. The gpio commands now also accept to reference a GPIO by name. The printing of the gpioinfo command is adjusted to nicely print both the label and the name. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: add driver for MPC8xxx ip coreSteffen Trumtrar2019-09-173-0/+131
| | | | | | | | Import GPIO-driver for MPC512x/8349/8572/8610/QorIQ and compatible from Linux v5.2. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/stm32'Sascha Hauer2019-07-121-0/+7
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| * gpiolib: add gpio_get_chip helperAhmad Fatoum2019-06-201-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pinctrl nodes adhering to the generic pinctrl bindings may contain properties like input-low/input-high, which require pinctrl_ops.set_state to have a handle on the relevant gpio chip. Currently this would lead to code duplication: Both the pinctrl driver and gpiolib will need to store a list of registered gpiochips. Avoid this by providing a helper to query the registered gpio_chip given a gpio's number. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | pcf857x: fix CONFIG_OF to OFDEVICEMichael Grzeschik2019-06-171-1/+1
|/ | | | | | | | There is not CONFIG_OF symbol. We fix this by using OFDEVICE instead. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: add driver for PCF857x, PCA{85, 96}7x, and MAX732[89] I2C GPIO expandersMichael Grzeschik2019-06-043-0/+274
| | | | | | Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pinctrl: bcm2835: move existing code from gpio.Tomaz Solc2019-02-193-167/+0
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: clps711x: Use coredevice_platform_driver() macroAlexander Shiyan2018-12-201-6/+1
| | | | | Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: clps711x: Switch to SPDX identifierAlexander Shiyan2018-12-201-8/+2
| | | | | | | | Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: clps711x: Change compatible stringAlexander Shiyan2018-12-201-1/+1
| | | | | | | | This patch changes compatible string for CLPS711X GPIO driver to "cirrus,ep7209-gpio" for conform with linux kernel. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/misc'Sascha Hauer2018-11-092-14/+2
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| * i2c: introduce device_i2c_driver() macroMarco Felsch2018-10-192-14/+2
| | | | | | | | | | | | | | | | | | Add macro and dependency to avoid boilerplate code. Since now simple i2c drivers only have to include the i2c.h header and call the device_i2c_driver() macro to register a i2c device driver. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpiolib: Introduce gpio_find_by_label()Andrey Smirnov2018-10-291-0/+17
| | | | | | | | | | | | | | | | Introduce gpio_find_by_label() in order to allow manipulating GPIOs by the labels assigned to them via DT or board/driver code. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: VF610: Propagate error code of gpiochip_add() upAndrey Smirnov2018-10-291-2/+1
| | | | | | | | | | | | | | | | | | Propagate error code of gpiochip_add() up the call chain. This won't do any meaningful cleanup, but at least it will make problems noticable. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: tree-wide don't probe devices during core_initcallMarco Felsch2018-10-194-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 37e6bee7e5 ("gpiolib: Add support for GPIO "hog" nodes") barebox can handle hog-gpios. To work correctly the pinctrl driver must be initialised first. Reorder all core_initcall's so the pinctrl driver can be called first. find drivers/gpio/ -type f -name gpio-*.c -exec sed -i \ 's/core_initcall/postcore_initcall/' "{}" +; Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpiolib: fix of_hog_gpio gpio label assignmentMarco Felsch2018-10-191-1/+4
| | | | | | | | | | | | | | | | | | | | | | Current the label is retrieved by the line-name property but this is a optional property. In case of a missing line-name property the label is NULL. As the binding documentation told, the gpio-label must be set to the device-node name in case of missing line-name property. Fixes: 37e6bee7e5 ("gpiolib: Add support for GPIO "hog" nodes") Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpiolib: fix of_gpio_hog error handlingMarco Felsch2018-10-191-4/+4
|/ | | | | | | | | | Currently the error handling of gpio_get_num() checks the return value of the previous of_property_read_u32_index() which has it's own error check. Fix it by using the correct return value variable. Fixes: 37e6bee7e5 ("gpiolib: Add support for GPIO "hog" nodes") Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: pca953x: add oftree supportOleg.Karfich@wago.com2018-08-311-0/+35
| | | | | Signed-off-by: Oleg Karfich <oleg.karfich@wago.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: i.MX: Add i.MX8mq supportSascha Hauer2018-06-111-0/+3
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* sandbox: add gpio support with libftdi1Antony Pavlov2018-01-293-0/+142
| | | | | Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* remove checks for xzalloc() returning NULLUwe Kleine-König2017-09-263-6/+0
| | | | | | | xzalloc() either returns memory or panics, so checking for NULL is useless. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpiolib: check validity for gpio_info in *_active()Uwe Kleine-König2017-09-261-0/+12
| | | | | | | | | | | | gpio_set_active, gpio_is_active and gpio_direction_active are public functions, accordingly there should be error checking. If an invalid gpio number is given to these functions without checking gpio_adjust_value is called with gi == NULL which then dereferences this pointer. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/misc'Sascha Hauer2017-09-081-2/+11
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| * gpio: gpio-generic: add dt supportAntony Pavlov2017-09-081-0/+9
| | | | | | | | | | Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| * gpio: gpio-generic: fix bgpio_map()Antony Pavlov2017-09-081-2/+2
| | | | | | | | | | Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: clps711x: clps711x_gpio_dt_ids: add missing sentinel entryAntony Pavlov2017-09-061-0/+1
|/ | | | | | Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Cc: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpiolib: Simplify code of gpio_request_one()Andrey Smirnov2017-07-301-9/+3
| | | | | | | | | Looks like we can get rid of an 'if' and 'goto', so do it to simplify the code. Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
* gpiolib: Fix buggy flag detection codeAndrey Smirnov2017-07-301-9/+16
| | | | | | | | | | | | Both GPIOF_ACTIVE_LOW and GPIOF_INIT_ACTIVE are multi-bit constants so detecting their assertion using simple bit-wise and is incorrect and would lead to false positives. Fixes: bbc499914 ("gpiolib: Add code to support "active low" GPIOs") Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
* gpio: fix null pointer exception when there is no oftreeSam Ravnborg2017-07-071-0/+3
| | | | | | | | | | | | | | | | In a system with oftree support enabled but with no oftree the of_gpiochip_scan_hogs() would fail due to device_node equals NULL. Check device_node and return with 0 in this situation, as this mirrors what would have happened before we added support for gpio-hogs. Use IS_ENABLED(CONFIG_OFDEVICE) to teach compiler to leave out the of_* specific functions if not needed. Fixes: 37e6bee7 ("gpiolib: Add support for GPIO "hog" nodes") Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
* gpiolib: Add support for GPIO "hog" nodesAndrey Smirnov2017-06-061-1/+95
| | | | | | | | | | Add code to support 'gpio-hog' nodes used in some .dts files in Linux kernel. Cc: cphealy@gmail.com Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpiolib: Add code to support "active low" GPIOsAndrey Smirnov2017-06-061-4/+46
| | | | | | | | | | | | | So far this particular aspect of various DT-bindings has been handled on a per-driver basis. With this change, hopefully, we'll have a single place to handle necessary logic inversions and eventually would be able to migrate existing users as well as avoiding adding redundant code to new drivers. Cc: cphealy@gmail.com Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio-imx: Do not use gpio_set_value()Andrey Smirnov2017-06-061-1/+1
| | | | | | | | | | | | Do not use gpio_set_value() in imx_gpio_direction_output(). We don't check gpio_set_value's result, so calling imx_gpio_set_value() directly instead should be as good. Cc: cphealy@gmail.com Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Acked-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/vybrid'Sascha Hauer2017-01-123-0/+170
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| * gpio: Add GPIO driver for VybridAndrey Smirnov2017-01-113-0/+170
| | | | | | | | | | | | | | | | Add GPIO driver for VF610 Family of SoCs (based on analogous driver from Linux kernel) Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: gpio-74164: Add 74lvc594 IDAlexander Shiyan2017-01-101-0/+1
| | | | | | | | | | | | | | | | The latest kernel gpio-74x164 driver supports 74LVC594 IC ID. Patch adds such ID to barebox driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: Port SX150x driver from LinuxAndrey Smirnov2017-01-103-0/+283
|/ | | | | | | | | | | | | | | Add a very abridged version of SX150x driver from Linux. New, "pinctrl" version of the driver was used as a base. As it was already mentioned this driver supports very limited amount of the original functionality, and the following are the features that were dropped: - Interrupt support - Support for any chip other that SX150x (due to lack of HW to test with) - Any pinctlr-like functions: pull-up/pull-down, open-drain, etc. configuration Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/misc'Sascha Hauer2016-03-111-7/+7
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| * Kconfig: avoid tabs in help textAlexander Kurz2016-02-251-7/+7
| | | | | | | | | | | | | | | | Tabs in kconfig help text will create unwanted indention artefacs when the help text is scrolled horizontally. Replacing tabs with spaces. Signed-off-by: Alexander Kurz <akurz@blala.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | driver: replace dev_request_mem_region with dev_request_mem_resourceSascha Hauer2016-03-0712-36/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_request_mem_region doesn't work properly one some SoCs on which PTR_ERR() values clash with valid return values from dev_request_mem_region. Replace them with dev_request_mem_resource where possible. This patch has been generated with the following semantic patch: // <smpl> @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { ... - return PTR_ERR(io); -} + return PTR_ERR(iores); +} +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) - return PTR_ERR(io); -} + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); -if (IS_ERR(io)) { - ret = PTR_ERR(io); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) { + ret = PTR_ERR(iores); ... } +io = IOMEM(iores->start); ...+> } @@ expression d; expression n; expression io; identifier func; @@ func(...) { +struct resource *iores; <+... -io = dev_request_mem_region(d, n); +iores = dev_request_mem_resource(d, n); +if (IS_ERR(iores)) + return PTR_ERR(iores); +io = IOMEM(iores->start); ...+> } @@ identifier func; @@ func(...) { <+... struct resource *iores; -struct resource *iores; ...+> } // </smpl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | driver: Fix return check of dev_request_mem_regionSascha Hauer2016-02-231-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dev_request_mem_region returns an ERR_PTR, fix places which check for a NULL pointer instead. This patch has been generated with this semantic patch, written by me and improved by Andrey Smirnov: // <smpl> @@ expression e; expression e1; @@ e = dev_request_mem_region(...); ... -if (!e) - return e1; +if (IS_ERR(e)) + return PTR_ERR(e); @ rule1 @ expression e; @@ e = dev_request_mem_region(...); @@ expression rule1.e; identifier ret, label; constant errno; @@ if (!e) { ... ( - ret = -errno; + ret = PTR_ERR(e); ... goto label; | - return -errno; + return PTR_ERR(e); ) } @depends on rule1@ expression rule1.e; @@ - if (e == NULL) + if (IS_ERR(e)) { ... } // </smpl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
* bcm2835: introduce mach-bcm283xAlexander Aring2016-01-042-4/+4
| | | | | | | | | | | | This patch changes the most part of mach-bcm2835 to mach-bcm283x. This prepares to add RPi2 support which is a bcm2836. This patch changes the Kconfig entry namens to BCM283X for drivers only. These drivers should working the same in bcm2836. While updating defconfig I added LED support/trigger option. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: add ath79-gpio driver for Atheros MIPS SoCsAntony Pavlov2015-09-232-0/+157
| | | | | | | This driver is based on linux-4.2 driver. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: dw: implement new bindingsSteffen Trumtrar2015-08-191-24/+55
| | | | | | | | | The gpio-driver was developed when the bindings where not stable. As these have changed in the meantime, the driver has to be updated to the status quo. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio: dw: fix copy&paste variable nameSteffen Trumtrar2015-08-191-2/+2
| | | | | | | This is a DW driver not IMX; fix variable name. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* gpio-davinci: gpio get should return 0 or 1Jan Luebbe2015-06-011-1/+1
| | | | | | | | Returning other values causes problems for client code which wants to perform calculations with the returned value. Signed-off-by: Jan Luebbe <jluebbe@debian.org> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/of-device-id'Sascha Hauer2015-05-066-20/+20
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| * of: use 'const void *' for struct of_device_id.dataAntony Pavlov2015-04-306-20/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 2011 barebox' of_device_id struct uses unsigned long type for data field: struct of_device_id { char *compatible; unsigned long data; }; Almost always struct of_device_id.data field are used as pointer and need 'unsigned long' casting. E.g. see 'git grep -A 4 of_device_id drivers/' output: drivers/ata/sata-imx.c:static __maybe_unused struct of_device_id imx_sata_dt_ids[] = { drivers/ata/sata-imx.c- { drivers/ata/sata-imx.c- .compatible = "fsl,imx6q-ahci", drivers/ata/sata-imx.c- .data = (unsigned long)&data_imx6, drivers/ata/sata-imx.c- }, { Here is of_device_id struct in linux kernel v4.0: struct of_device_id { char name[32]; char type[32]; char compatible[128]; const void *data; }; Changing of_device_id.data type to 'const void *data' will increase barebox' linux kernel compatibility and decrease number of 'unsigned long' casts. Part of the patch was done using the 'coccinelle' tool with the following semantic patch: @rule1@ identifier dev; identifier type; identifier func; @@ func(...) { <... - dev_get_drvdata(dev, (unsigned long *)&type) + dev_get_drvdata(dev, (const void **)&type) ...> } @rule2@ identifier dev; identifier type; identifier func; identifier data; @@ func(...) { <... - dev_get_drvdata(dev, (unsigned long *)&type->data) + dev_get_drvdata(dev, (const void **)&type->data) ...> } Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | gpio: Add driver for 74x164 compatible shift-registersSebastian Hesselbarth2015-04-273-0/+140
| | | | | | | | | | | | | | | | | | A 74x164 shift register can be seen as a SPI attached GPIO expander. This adds a driver for those poor-man expanders based on the Linux driver. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-25 04:05:39 +0000