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path: root/drivers/firmware/tegra/bpmp.c
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2017-08-17firmware: tegra: set drvdata earlierTimo Alho
Subdevices of bpmp, such as bpmp-i2c, require the bpmp device's drvdata to be set during their probe. Currently this is not always the case. Fix this by calling platform_set_drvdata() earlier during bpmp's probe. Signed-off-by: Timo Alho <talho@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2017-06-18Merge tag 'tegra-for-4.13-firmware' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers firmware: tegra: Changes for v4.13-rc1 This contains a fix for missing semaphore release in error paths as well as a bogus error code return in the BPMP firmware implementation. * tag 'tegra-for-4.13-firmware' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: firmware: tegra: Fix locking bugs in BPMP Signed-off-by: Olof Johansson <olof@lixom.net>
2017-06-14firmware: tegra: Fix locking bugs in BPMPDan Carpenter
There are a bunch of error paths were we don't unlock the bpmp->threaded lock. Also if __tegra_bpmp_channel_write() fails then we returned success instead of an error code. Fixes: 983de5f97169 ("firmware: tegra: Add BPMP support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2017-06-13soc/tegra: bpmp: Implement generic PM domainsThierry Reding
The BPMP firmware, found on Tegra186 and later, provides an ABI that can be used to enable and disable power to several power partitions in Tegra SoCs. The ABI allows for enumeration of the available power partitions, so the driver can be reused on future generations, provided the BPMP ABI remains stable. Based on work by Stefan Kristiansson <stefank@nvidia.com> and Mikko Perttunen <mperttunen@nvidia.com>. Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2017-03-02sched/headers: Prepare for new header dependencies before moving code to ↵Ingo Molnar
<linux/sched/clock.h> We are going to split <linux/sched/clock.h> out of <linux/sched.h>, which will have to be picked up from other headers and .c files. Create a trivial placeholder <linux/sched/clock.h> file that just maps to <linux/sched.h> to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-18firmware: tegra: Add BPMP supportThierry Reding
The Boot and Power Management Processor (BPMP) is a co-processor found on Tegra SoCs. It is designed to handle the early stages of the boot process and offload power management tasks (such as clocks, resets, powergates, ...) as well as system control services. Compared to the ARM SCPI, the services provided by BPMP are message- based rather than method-based. The BPMP firmware driver provides the services to transmit data to and receive data from the BPMP. Users can also register a Message ReQuest (MRQ), for which a service routine will be run when a corresponding event is received from the firmware. A set of messages, called the BPMP ABI, are specified for a number of different services provided by the BPMP (such as clocks or resets). Based on work by Sivaram Nair <sivaramn@nvidia.com> and Joseph Lo <josephl@nvidia.com>. Signed-off-by: Thierry Reding <treding@nvidia.com>