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path: root/drivers/rtc/rtc-goldfish.c
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2022-04-11clocksource/drivers: Add a goldfish-timer clocksourceLaurent Vivier1-12/+1
Add a clocksource based on the goldfish-rtc device. Move the timer register definition to <clocksource/timer-goldfish.h> This kernel implementation is based on the QEMU upstream implementation: https://git.qemu.org/?p=qemu.git;a=blob_plain;f=hw/rtc/goldfish_rtc.c goldfish-timer is a high-precision signed 64-bit nanosecond timer. It is part of the 'goldfish' virtual hardware platform used to run some emulated Android systems under QEMU. This timer only supports oneshot event. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20220406201523.243733-4-laurent@vivier.eu Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2022-04-11rtc: goldfish: Use gf_ioread32()/gf_iowrite32()Laurent Vivier1-15/+16
Replace readl()/writel() by gf_ioread32()/gf_iowrite32() as done for goldfish-tty. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220406201523.243733-3-laurent@vivier.eu Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2020-11-19rtc: rework rtc_register_device() resource managementBartosz Golaszewski1-1/+1
rtc_register_device() is a managed interface but it doesn't use devres by itself - instead it marks an rtc_device as "registered" and the devres callback for devm_rtc_allocate_device() takes care of resource release. This doesn't correspond with the design behind devres where managed structures should not be aware of being managed. The correct solution here is to register a separate devres callback for unregistering the device. While at it: rename rtc_register_device() to devm_rtc_register_device() and add it to the list of managed interfaces in devres.rst. This way we can avoid any potential confusion of driver developers who may expect there to exist a corresponding unregister function. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20201109163409.24301-8-brgl@bgdev.pl
2020-07-16rtc: goldfish: Enable interrupt in set_alarm() when necessaryHuacai Chen1-0/+1
When use goldfish rtc, the "hwclock" command fails with "select() to /dev/rtc to wait for clock tick timed out". This is because "hwclock" need the set_alarm() hook to enable interrupt when alrm->enabled is true. This operation is missing in goldfish rtc (but other rtc drivers, such as cmos rtc, enable interrupt here), so add it. Signed-off-by: Huacai Chen <chenhc@lemote.com> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1592654683-31314-1-git-send-email-chenhc@lemote.com
2020-05-30rtc: goldfish: Use correct return value for goldfish_rtc_probe()Tiezhu Yang1-1/+1
When call function devm_platform_ioremap_resource(), we should use IS_ERR() to check the return value and return PTR_ERR() if failed. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1590370788-15136-1-git-send-email-yangtiezhu@loongson.cn
2019-10-06rtc: Use devm_platform_ioremap_resource()Markus Elfring1-7/+1
Simplify probe by using a known wrapper function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Link: https://lore.kernel.org/r/4552ef52-f218-93b1-6dfa-668d137676f8@web.de Link: https://lore.kernel.org/r/5ecfcf43-d6b2-1a38-dee8-b8806f30bc83@web.de Link: https://lore.kernel.org/r/25448e11-c43f-9ae0-4c43-6f789accc026@web.de Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Link: https://lore.kernel.org/r/8c17a59c-82ff-aa6b-5653-a38d786d3e83@web.de Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: convert to SPDX identifierAlexandre Belloni1-10/+1
Use SPDX-License-Identifier instead of a verbose license text Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: switch to rtc_time64_to_tm/rtc_tm_to_time64Alexandre Belloni1-19/+8
This RTC handles dates after 2106 (up to July 2554), call the 64bit versions of rtc_tm time conversion. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: allow building on more than MIPSAlexandre Belloni1-0/+1
Goldfish can be ARM or x86, allow building the driver for more than just MIPS. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: sort headersAlexandre Belloni1-1/+1
Sort headers alphabetically. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: add rangeAlexandre Belloni1-0/+1
This RTC has a 64bit nanosecond counter. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-04rtc: goldfish: convert to devm_rtc_allocate_deviceAlexandre Belloni1-4/+4
This allows further improvement of the driver. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-02-13rtc: goldfish: Add missing MODULE_LICENSEJames Hogan1-0/+2
Fix the following warning in MIPS allmodconfig by adding a MODULE_LICENSE() at the end of rtc-goldfish.c, based on the file header comment which says GNU General Public License version 2: WARNING: modpost: missing MODULE_LICENSE() in drivers/rtc/rtc-goldfish.o Fixes: f22d9cdcb5eb ("rtc: goldfish: Add RTC driver for Android emulator") Signed-off-by: James Hogan <jhogan@kernel.org> Cc: Miodrag Dinic <miodrag.dinic@mips.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: linux-rtc@vger.kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2017-09-01rtc: goldfish: Add RTC driver for Android emulatorMiodrag Dinic1-0/+237
Add device driver for a virtual RTC device in Android emulator. The compatible string used by OS for binding the driver is defined as "google,goldfish-rtc". Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com> Signed-off-by: Goran Ferenc <goran.ferenc@imgtec.com> Signed-off-by: Aleksandar Markovic <aleksandar.markovic@imgtec.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-19 03:54:40 +0000