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2021-05-30drivers/i2c/rx6110sa: Add a Kconfig switch to disable ACPI supportWerner Zeh
In commit b64db833d6 a basic ACPI support was added to the driver. With this support an SSDT-entry is created for this RTC and it is now visible to the OS via ACPI. In Linux the PNP-devices, which are reported over ACPI, are scanned rather early and if the entry is found, the device is claimed even if there is no driver available yet. In this case, when the native RTC-driver without ACPI-support is loaded and tries to register this device, the RTC is already blocked by the PNP-drivers and cannot be used anymore. This leads to a non-usable RTC on kernels where the needed ACPI-extension is not yet merged into the RTC driver. This patch provides a way to disable the ACPI-support for the RTC if needed. Change-Id: Ic65794d409d13a78d17275c86ec14ee6f04cd2a6 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55003 Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-03-04src/drivers/i2c/rx6110sa: Add official ACPI IDWerner Zeh
In commit 2609eaaa8f (src/drivers/i2c/rx6110sa: Omit _HID temporarily) the randomly assigned and therefore wrong ACPI ID for RTC RX6110SA was removed. In the meantime Seiko-Epson did a great job and registered an official vendor ID in the ACPI database [1]. Further on, Seiko-Epson has now assigned the unique Product Identifier for the RX6110SA, which is '6110'. The assignment of the Product Identifier is controlled by the vendor and there is no official database where this ID is stored in. It is up to the vendor to make sure that this ID stays unique. This patch adds this new vendor and product ID to the driver. Together with a pending Linux patch this RTC is now useable as ACPI device in Linux. [1] https://uefi.org/ACPI_ID_List?search=SECC Change-Id: I45838162f014a760520692c6dcaae329ad98547d Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51176 Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Johannes Hahn <johannes-hahn@siemens.com> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-19src/drivers/i2c/rx6110sa: Omit _HID temporarilyWerner Zeh
The current HID "RX6110SA" does not comply with the ACPI spec in terms of the naming convention where the first three caracters should be a vendor ID and the last 4 characters should be a device ID. For now there is a vendor ID for Epson (SEC) but there is none for this particular RTC. In order to avoid the reporting of a non ACPI-compliant HID it will be dropped completely for now. Once Epson has assigned a valid HID for this RTC, this valid HID will be used here instead. Change-Id: Ib77ffad084c25f60f79ec7d503f14731b1ebe9e2 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47706 Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-11-12drivers/i2c/rx6110sa: Delete unused definesWerner Zeh
The defines for RX6110SA_SLAVE_ADR and RX6110SA_I2C_CONTROLLER are not used anymore and can be deleted. Change-Id: I3cddf7a9e2f757a22c729ae0f0ff767d55909b9c Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47236 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Tested-by: siemens-bot Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2020-11-12drivers/i2c/rx6110sa: Add basic ACPI supportWerner Zeh
This patch adds basic ACPI support for the RTC so that the OS is able to use this RTC via the ACPI interface. If the Linux kernel is able to find the RTC in ACPI scope, you should see the following lines in dmesg, where [n] is an enumerated number: rx6110 i2c-RX6110SA:00: rtc core: registered RX6110SA:00 as rtc[n] rtc rtc[n]: Update timer was detected Change-Id: I9b319e3088e6511592075b055f8fa3e2aedaa209 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47235 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2020-05-11treewide: Remove "this file is part of" linesPatrick Georgi
Stefan thinks they don't add value. Command used: sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool) The exceptions are for: - crossgcc (patch file) - gcov (imported from gcc) - elf.h (imported from GNU's libc) - nvramtool (more complicated header) The removed lines are: - fmt.Fprintln(f, "/* This file is part of the coreboot project. */") -# This file is part of a set of unofficial pre-commit hooks available -/* This file is part of coreboot */ -# This file is part of msrtool. -/* This file is part of msrtool. */ - * This file is part of ncurses, designed to be appended after curses.h.in -/* This file is part of pgtblgen. */ - * This file is part of the coreboot project. - /* This file is part of the coreboot project. */ -# This file is part of the coreboot project. -# This file is part of the coreboot project. -## This file is part of the coreboot project. --- This file is part of the coreboot project. -/* This file is part of the coreboot project */ -/* This file is part of the coreboot project. */ -;## This file is part of the coreboot project. -# This file is part of the coreboot project. It originated in the - * This file is part of the coreinfo project. -## This file is part of the coreinfo project. - * This file is part of the depthcharge project. -/* This file is part of the depthcharge project. */ -/* This file is part of the ectool project. */ - * This file is part of the GNU C Library. - * This file is part of the libpayload project. -## This file is part of the libpayload project. -/* This file is part of the Linux kernel. */ -## This file is part of the superiotool project. -/* This file is part of the superiotool project */ -/* This file is part of uio_usbdebug */ Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-10Replace DEVICE_NOOP with noop_(set|read)_resourcesNico Huber
`.read_resources` and `.set_resources` are the only two device operations that are considered mandatory. Other function pointers can be left NULL. Having dedicated no-op implementations for the two mandatory fields should stop the leaking of no-op pointers to other fields. Change-Id: I6469a7568dc24317c95e238749d878e798b0a362 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40207 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Edward O'Callaghan <quasisec@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-10Drop unnecessary DEVICE_NOOP entriesNico Huber
Providing an explicit no-op function pointer is only necessary for `.read_resources` and `.set_resources`. All other device-operation pointers are optional and can be NULL. Change-Id: I3d139f7be86180558cabec04b8566873062e33be Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40206 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Edward O'Callaghan <quasisec@chromium.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-06src/drivers: Use SPDX for GPL-2.0-only filesAngel Pons
Done with sed and God Lines. Only done for C-like code for now. Change-Id: I38eaffa391ed5971217ffad74a312b1641e431c9 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40051 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2019-10-22AUTHORS: Move src/drivers/[a*-i*] copyrights into AUTHORS fileMartin Roth
As discussed on the mailing list and voted upon, the coreboot project is going to move the majority of copyrights out of the headers and into an AUTHORS file. This will happen a bit at a time, as we'll be unifying license headers at the same time. Updated Authors file is in a separate commit. Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: I1acea8c975d14904b7e486dc57a1a67480a6ee6e Reviewed-on: https://review.coreboot.org/c/coreboot/+/36178 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-01-24device/i2c_bus: allow i2c_bus and i2c_simple to coexistAaron Durbin
If one wants to implement both i2c_bus.h and i2c_simple.h APIs the compilation unit needs to be guarded or coordinated carefully with different compilation units. Instead, name the i2c_bus functions with _dev such that it indicates that they operate on struct device. One other change to allow i2c_bus.h to be built in non-ramstage environments is to ensure DEVTREE_CONST is used for the dev field in struct bus. BUG=b:72121803 Change-Id: I267e27e62c95013e8ff8b0728dbe9e7b523de453 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/23370 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-11-07src: Fix all Siemens copyrightsMario Scheithauer
Some Siemens copyright entries incorrectly contain a dot at the end of the line. This is fixed with this patch. Change-Id: I8d98f9a7caad65f7d14c3c2a0de67cb636340116 Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com> Reviewed-on: https://review.coreboot.org/22355 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2017-09-26Use stopwatch_wait_until_expired where applicableJonathan Neuschäfer
Change-Id: I4d6c6810b91294a7e401a4a1a446218c04c98e55 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/21590 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2017-08-18drivers/i2c/rx6110sa: Drop I2C interface arbitrationNico Huber
Change-Id: Ib31e77eec639c231520198c0b978d6c3c1eadaed Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20454 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-18include/device: Split i2c.h into threeNico Huber
Split `i2c.h` into three pieces to ease reuse of the generic defi- nitions. No code is changed. * `i2c.h` - keeps the generic definitions * `i2c_simple.h` - holds the current, limited to one controller driver per board, devicetree independent I2C interface * `i2c_bus.h` - will become the devicetree compatible interface for native I2C (e.g. non-SMBus) controllers Change-Id: I382d45c70f9314588663e1284f264f877469c74d Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20845 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-08-08rx6110sa: Make sure that VLF bit will be clearedWerner Zeh
Ensure that the VLF bit will be cleared after a power loss event even if the stopwatch has expired before the code to clear the bit is reached. Change-Id: Ib2cfdabf4cd4df834395d6a102c6ae70568e71db Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/20893 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2017-06-30rx6110sa: Add a software reset sequence in case of power lossWerner Zeh
According to the datasheet the RTC needs a power rising slope of no more than 100µs/V to ensure a correct power-on reset. If the mainboard that hosts the RTC cannot guarantee this, a software reset sequence is needed in the case where the battery was drained completely. As the rising slope of the power supply depends on so many parameters and is highly mainboard specific, refactor the initialization code to perform a software reset every time a power loss event is recognized by the RTC. Change-Id: If64d672e51667523058041bd00e1e50ac047143d Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/20412 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>
2017-06-09rx6110sa: Add more chip configuration options to chipWerner Zeh
The RTC RX6110SA has several configuration options which might be interesting to set. To make this setup independent of the driver itself but let it still be configurable on mainboard level, add more configuration options to the chip driver. Change-Id: I7f8b2aa7cd001a887f271be36f655e10e60e778b Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/20084 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
2017-05-31rx6110sa: Add possibility to use both I2C and SMBus for the RTCWerner Zeh
The driver for the RTC RX6110SA is designed to be used with I2C bus. This patch adds the possibility to use SMBus operations to access the RTC. For this purpose the Kconfig switch RX6110SA_USE_SMBUS is added. It is not enabled per default so that I2C will be used. One can set this switch on board level to use SMBus instead. Change-Id: I4827ae2c544e8002399d94a1159acacd8176c5e9 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/19978 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-05-11drivers/i2c: Add new driver for RTC type RX6110 SAMario Scheithauer
This driver enables the usage of the external RTC chip RX6110 SA (http://www5.epsondevice.com/en/products/i2c/rx6110sab.html) which is connected to the I2C bus. The I2C address of this device is fixed. One can change parameters in the device tree so that the used setup can be adapted to match the configuration of the device on the mainboard. Change-Id: I1290a10c2d5ad76a317c99c8b92a013309a605d6 Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com> Reviewed-on: https://review.coreboot.org/19625 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
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