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linux/drivers/rtc/rtc-tegra.c

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rtc: tegra: convert to SPDX identifier Use SPDX-License-Identifier instead of a verbose license text. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:46 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Turn into regular driver Drivers registered with module_platform_driver_probe() are considered non-hotpluggable, which among other things means that they don't support deferred probe. However, recent changes in how the ARM SMMU works have required the BPMP (which is the clock provider on Tegra186 and later) be bound to the SMMU, which in turn means that the BPMP driver can defer probe and hence clocks become available much later than they used to. For most other drivers this is not a problem because they already properly support deferred probe, but rtc-tegra is the odd one out that now fails to probe and will therefore never be registered. Fix this by making the driver a regular driver that supports unloading and deferred probe. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:59 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Sort includes alphabetically The ordering of includes is currently completely arbitrary, making it impossible to decide where to put new includes. Remove the dilemma by sort the include list alphabetically. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:42 +01:00
rtc: tegra: Implement clock handling Accessing the registers of the RTC block on Tegra requires the module clock to be enabled. This only works because the RTC module clock will be enabled by default during early boot. However, because the clock is unused, the CCF will disable it at late_init time. This causes the RTC to become unusable afterwards. This can easily be reproduced by trying to use the RTC: $ hwclock --rtc /dev/rtc1 This will hang the system. I ran into this by following up on a report by Martin Michlmayr that reboot wasn't working on Tegra210 systems. It turns out that the rtc-tegra driver's ->shutdown() implementation will hang the CPU, because of the disabled clock, before the system can be rebooted. What confused me for a while is that the same driver is used on prior Tegra generations where the hang can not be observed. However, as Peter De Schrijver pointed out, this is because on 32-bit Tegra chips the RTC clock is enabled by the tegra20_timer.c clocksource driver, which uses the RTC to provide a persistent clock. This code is never enabled on 64-bit Tegra because the persistent clock infrastructure does not exist on 64-bit ARM. The proper fix for this is to add proper clock handling to the RTC driver in order to ensure that the clock is enabled when the driver requires it. All device trees contain the clock already, therefore no additional changes are required. Reported-by: Martin Michlmayr <tbm@cyrius.com> Acked-By Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:43 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Sort includes alphabetically The ordering of includes is currently completely arbitrary, making it impossible to decide where to put new includes. Remove the dilemma by sort the include list alphabetically. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:42 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: tegra: Sort includes alphabetically The ordering of includes is currently completely arbitrary, making it impossible to decide where to put new includes. Remove the dilemma by sort the include list alphabetically. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:42 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: remove set but unused variable Fix the following warning: drivers/rtc/rtc-tegra.c: In function ‘tegra_rtc_read_time’: drivers/rtc/rtc-tegra.c:106:11: warning: variable ‘msec’ set but not used [-Wunused-but-set-variable] Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20191122102212.400158-8-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-11-22 11:22:11 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: remove set but unused variable Fix the following warning: drivers/rtc/rtc-tegra.c: In function ‘tegra_rtc_read_time’: drivers/rtc/rtc-tegra.c:106:11: warning: variable ‘msec’ set but not used [-Wunused-but-set-variable] Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20191122102212.400158-8-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-11-22 11:22:11 +01:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: switch to rtc_time64_to_tm/rtc_tm_to_time64 Call the 64bit versions of rtc_tm time conversion now that the range is enforced by the core. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:45 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: switch to rtc_time64_to_tm/rtc_tm_to_time64 Call the 64bit versions of rtc_tm time conversion now that the range is enforced by the core. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:45 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: switch to rtc_time64_to_tm/rtc_tm_to_time64 Call the 64bit versions of rtc_tm time conversion now that the range is enforced by the core. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:45 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: switch to rtc_time64_to_tm/rtc_tm_to_time64 Call the 64bit versions of rtc_tm time conversion now that the range is enforced by the core. Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:45 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: remove use of seq_printf return value The seq_printf return value, because it's frequently misused, will eventually be converted to void. See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to seq_has_overflowed() and make public") Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-15 16:17:51 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Replace spin_lock_irqsave with spin_lock in hard IRQ It is redundant to do irqsave and irqrestore in hardIRQ context, where it has been in a irq-disabled context. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1612355981-6764-5-git-send-email-tanxiaofei@huawei.com
2021-02-03 20:39:39 +08:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Replace spin_lock_irqsave with spin_lock in hard IRQ It is redundant to do irqsave and irqrestore in hardIRQ context, where it has been in a irq-disabled context. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1612355981-6764-5-git-send-email-tanxiaofei@huawei.com
2021-02-03 20:39:39 +08:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: Replace spin_lock_irqsave with spin_lock in hard IRQ It is redundant to do irqsave and irqrestore in hardIRQ context, where it has been in a irq-disabled context. Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1612355981-6764-5-git-send-email-tanxiaofei@huawei.com
2021-02-03 20:39:39 +08:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: constify rtc_class_ops structures Check for rtc_class_ops structures that are only passed to devm_rtc_device_register, rtc_device_register, platform_device_register_data, all of which declare the corresponding parameter as const. Declare rtc_class_ops structures that have these properties as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct rtc_class_ops i@p = { ... }; @ok@ identifier r.i; expression e1,e2,e3,e4; position p; @@ ( devm_rtc_device_register(e1,e2,&i@p,e3) | rtc_device_register(e1,e2,&i@p,e3) | platform_device_register_data(e1,e2,e3,&i@p,e4) ) @bad@ position p != {r.p,ok.p}; identifier r.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct rtc_class_ops i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Baruch Siach <baruch@tkos.co.il> Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-08-31 10:05:25 +02:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: convert to DT driver After Kernel 3.7, the Tegra device will only support booting with DT. The legacy Tegra RTC platform driver will not work anymore. This patch converts the driver to support DT. Signed-off-by: Joseph Lo <josephl@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Joseph Lo <josephl@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-04 15:34:45 -08:00
rtc: tegra: Add ACPI support Add ACPI support for Tegra RTC, which is available on Tegra241 and Tegra410. Both Tegra241 and Tegra410 use the same ACPI ID 'NVDA0280'. When ACPI boot is used, the RTC clock is configured by UEFI before the kernel boots. On device-tree boot, the probe must fail if clocks are not provided in the device-tree. Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-2-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:51 +05:30
rtc: tegra: Turn into regular driver Drivers registered with module_platform_driver_probe() are considered non-hotpluggable, which among other things means that they don't support deferred probe. However, recent changes in how the ARM SMMU works have required the BPMP (which is the clock provider on Tegra186 and later) be bound to the SMMU, which in turn means that the BPMP driver can defer probe and hence clocks become available much later than they used to. For most other drivers this is not a problem because they already properly support deferred probe, but rtc-tegra is the odd one out that now fails to probe and will therefore never be registered. Fix this by making the driver a regular driver that supports unloading and deferred probe. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:59 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: use devm_platform_ioremap_resource() to simplify code Use devm_platform_ioremap_resource() to simplify the code a bit. This is detected by coccinelle. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20191006102953.57536-2-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-3-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-4-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-5-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-6-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-7-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-8-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-9-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-10-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-11-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-12-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-13-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-14-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-15-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-16-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-17-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-18-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-19-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-20-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-21-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-22-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-23-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-24-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-25-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-26-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-27-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-28-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-29-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-30-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-31-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-32-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-33-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-34-yuehaibing@huawei.com Link: https://lore.kernel.org/r/20191006102953.57536-35-yuehaibing@huawei.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-10-06 18:29:20 +08:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Propagate errors from platform_get_irq() Instead of confusingly returning -EBUSY on failure to obtain an interrupt, propagate the real error code. While at it, let the user know why the interrupt could not be acquired. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-21 12:12:09 +02:00
rtc: Remove dev_err() usage after platform_get_irq() We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // <smpl> @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // </smpl> While we're here, remove braces on if statements that only have one statement (manually). Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: linux-rtc@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20190730181557.90391-40-swboyd@chromium.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-07-30 11:15:39 -07:00
rtc: tegra: Propagate errors from platform_get_irq() Instead of confusingly returning -EBUSY on failure to obtain an interrupt, propagate the real error code. While at it, let the user know why the interrupt could not be acquired. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-09-21 12:12:09 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: set range The Tegra 20 RTC is a 32bit seconds counter (with an unused millisecond counter). Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:44 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: set range The Tegra 20 RTC is a 32bit seconds counter (with an unused millisecond counter). Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:44 +02:00
rtc: tegra: Add ACPI support Add ACPI support for Tegra RTC, which is available on Tegra241 and Tegra410. Both Tegra241 and Tegra410 use the same ACPI ID 'NVDA0280'. When ACPI boot is used, the RTC clock is configured by UEFI before the kernel boots. On device-tree boot, the probe must fail if clocks are not provided in the device-tree. Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-2-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:51 +05:30
rtc: tegra: Implement clock handling Accessing the registers of the RTC block on Tegra requires the module clock to be enabled. This only works because the RTC module clock will be enabled by default during early boot. However, because the clock is unused, the CCF will disable it at late_init time. This causes the RTC to become unusable afterwards. This can easily be reproduced by trying to use the RTC: $ hwclock --rtc /dev/rtc1 This will hang the system. I ran into this by following up on a report by Martin Michlmayr that reboot wasn't working on Tegra210 systems. It turns out that the rtc-tegra driver's ->shutdown() implementation will hang the CPU, because of the disabled clock, before the system can be rebooted. What confused me for a while is that the same driver is used on prior Tegra generations where the hang can not be observed. However, as Peter De Schrijver pointed out, this is because on 32-bit Tegra chips the RTC clock is enabled by the tegra20_timer.c clocksource driver, which uses the RTC to provide a persistent clock. This code is never enabled on 64-bit Tegra because the persistent clock infrastructure does not exist on 64-bit ARM. The proper fix for this is to add proper clock handling to the RTC driver in order to ensure that the clock is enabled when the driver requires it. All device trees contain the clock already, therefore no additional changes are required. Reported-by: Martin Michlmayr <tbm@cyrius.com> Acked-By Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:43 +01:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: use boolean values with device_init_wakeup() device_init_wakeup() second argument is a bool type. Use proper boolean values when calling it to match the type and to produce unambiguous code which is easier to understand. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Link: https://lore.kernel.org/r/20241217071331.3607-2-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2024-12-17 08:13:26 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: tegra: Use devm_clk_get_enabled() in probe Simplify clock management by replacing devm_clk_get() and manual clock enable/disable with devm_clk_get_enabled(). This also simplifies the error handling logic. Also remove tegra_rtc_remove() as the clock will automatically be disabled when the device is unbound from the bus. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-1-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:50 +05:30
rtc: tegra: set range The Tegra 20 RTC is a 32bit seconds counter (with an unused millisecond counter). Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-04-07 23:16:44 +02:00
rtc: rework rtc_register_device() resource management 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
2020-11-09 17:34:08 +01:00
rtc: remove superfluous error message The RTC core now has error messages in case of registration failure, there is no need to have other messages in the drivers. Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20190818220041.17833-2-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-08-19 00:00:41 +02:00
rtc: tegra: Use devm_clk_get_enabled() in probe Simplify clock management by replacing devm_clk_get() and manual clock enable/disable with devm_clk_get_enabled(). This also simplifies the error handling logic. Also remove tegra_rtc_remove() as the clock will automatically be disabled when the device is unbound from the bus. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-1-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:50 +05:30
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Implement clock handling Accessing the registers of the RTC block on Tegra requires the module clock to be enabled. This only works because the RTC module clock will be enabled by default during early boot. However, because the clock is unused, the CCF will disable it at late_init time. This causes the RTC to become unusable afterwards. This can easily be reproduced by trying to use the RTC: $ hwclock --rtc /dev/rtc1 This will hang the system. I ran into this by following up on a report by Martin Michlmayr that reboot wasn't working on Tegra210 systems. It turns out that the rtc-tegra driver's ->shutdown() implementation will hang the CPU, because of the disabled clock, before the system can be rebooted. What confused me for a while is that the same driver is used on prior Tegra generations where the hang can not be observed. However, as Peter De Schrijver pointed out, this is because on 32-bit Tegra chips the RTC clock is enabled by the tegra20_timer.c clocksource driver, which uses the RTC to provide a persistent clock. This code is never enabled on 64-bit Tegra because the persistent clock infrastructure does not exist on 64-bit ARM. The proper fix for this is to add proper clock handling to the RTC driver in order to ensure that the clock is enabled when the driver requires it. All device trees contain the clock already, therefore no additional changes are required. Reported-by: Martin Michlmayr <tbm@cyrius.com> Acked-By Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-12 17:07:43 +01:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Use consistent variable names and types Many of the variables have redundant prefixes or suffixes. Drop all of them where not necessary for context. Also make sure to use data types consistently. For instance, values read from 32-bit register accessors should be stored in u32. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:58 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Replace deprecated SIMPLE_DEV_PM_OPS Replace deprecated SIMPLE_DEV_PM_OPS with DEFINE_SIMPLE_DEV_PM_OPS macro and use pm_sleep_ptr() to initialize pm_ops. This also allows us to drop the checks for CONFIG_PM_SLEEP. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-3-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:52 +05:30
drivers/rtc/rtc-tegra.c: use struct dev_pm_ops for power management Make the Tegra RTC controller driver define its PM callbacks through a struct dev_pm_ops object rather than by using legacy PM hooks in struct platform_driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Reviewed-by: Stephen Warren <swarren@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:19:23 -07:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Turn into regular driver Drivers registered with module_platform_driver_probe() are considered non-hotpluggable, which among other things means that they don't support deferred probe. However, recent changes in how the ARM SMMU works have required the BPMP (which is the clock provider on Tegra186 and later) be bound to the SMMU, which in turn means that the BPMP driver can defer probe and hence clocks become available much later than they used to. For most other drivers this is not a problem because they already properly support deferred probe, but rtc-tegra is the odd one out that now fails to probe and will therefore never be registered. Fix this by making the driver a regular driver that supports unloading and deferred probe. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:59 +02:00
rtc: tegra: checkpatch and miscellaneous cleanups This set of changes fixes some checkpatch warnings as well as a number of punctuation and padding inconsistencies. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:57 +02:00
drivers/rtc/rtc-tegra.c: convert to DT driver After Kernel 3.7, the Tegra device will only support booting with DT. The legacy Tegra RTC platform driver will not work anymore. This patch converts the driver to support DT. Signed-off-by: Joseph Lo <josephl@nvidia.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Joseph Lo <josephl@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-04 15:34:45 -08:00
rtc: tegra: Add ACPI support Add ACPI support for Tegra RTC, which is available on Tegra241 and Tegra410. Both Tegra241 and Tegra410 use the same ACPI ID 'NVDA0280'. When ACPI boot is used, the RTC clock is configured by UEFI before the kernel boots. On device-tree boot, the probe must fail if clocks are not provided in the device-tree. Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-2-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:51 +05:30
rtc: tegra: Replace deprecated SIMPLE_DEV_PM_OPS Replace deprecated SIMPLE_DEV_PM_OPS with DEFINE_SIMPLE_DEV_PM_OPS macro and use pm_sleep_ptr() to initialize pm_ops. This also allows us to drop the checks for CONFIG_PM_SLEEP. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kartik Rajput <kkartik@nvidia.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Link: https://patch.msgid.link/20251024064952.775883-3-kkartik@nvidia.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2025-10-24 12:19:52 +05:30
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00
rtc: tegra: Turn into regular driver Drivers registered with module_platform_driver_probe() are considered non-hotpluggable, which among other things means that they don't support deferred probe. However, recent changes in how the ARM SMMU works have required the BPMP (which is the clock provider on Tegra186 and later) be bound to the SMMU, which in turn means that the BPMP driver can defer probe and hence clocks become available much later than they used to. For most other drivers this is not a problem because they already properly support deferred probe, but rtc-tegra is the odd one out that now fails to probe and will therefore never be registered. Fix this by making the driver a regular driver that supports unloading and deferred probe. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-05-27 12:13:59 +02:00
rtc: add real-time clock driver for NVIDIA Tegra This is a platform driver that supports the built-in real-time clock on Tegra SOCs. Signed-off-by: Andrew Chew <achew@nvidia.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: Wan ZongShun <mcuos.com@gmail.com> Acked-by: Jon Mayo <jmayo@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 16:34:55 -07:00