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path: root/drivers/acpi/arm64/gtdt.c
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* acpi/arm64: pr_err() strings should end with newlinesArvind Yadav2017-10-161-1/+1
| | | | | | | | | pr_err() messages should terminated with a new-line to avoid other messages being concatenated onto the end. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Hanjun Guo <hanjun.guo@linaro.org>
* acpi/arm64: Add SBSA Generic Watchdog support in GTDT driverFu Wei2017-04-191-0/+103
| | | | | | | | | | | | | | | | This driver adds support for parsing SBSA Generic Watchdog timer in GTDT, parse all info in SBSA Generic Watchdog Structure in GTDT, and creating a platform device with that information. This allows the operating system to obtain device data from the resource of platform device. The platform device named "sbsa-gwdt" can be used by the ARM SBSA Generic Watchdog driver. Signed-off-by: Fu Wei <fu.wei@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com>
* acpi/arm64: Add memory-mapped timer support in GTDT driverFu Wei2017-04-191-0/+157
| | | | | | | | | | | | | | | | | | | | | | On platforms booting with ACPI, architected memory-mapped timers' configuration data is provided by firmware through the ACPI GTDT static table. The clocksource architected timer kernel driver requires a firmware interface to collect timer configuration and configure its driver. this infrastructure is present for device tree systems, but it is missing on systems booting with ACPI. Implement the kernel infrastructure required to parse the static ACPI GTDT table so that the architected timer clocksource driver can make use of it on systems booting with ACPI, therefore enabling the corresponding timers configuration. Signed-off-by: Fu Wei <fu.wei@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> [Mark: restructure error handling] Signed-off-by: Mark Rutland <mark.rutland@arm.com>
* acpi/arm64: Add GTDT table parse driverFu Wei2017-04-191-0/+157
This patch adds support for parsing arch timer info in GTDT, provides some kernel APIs to parse all the PPIs and always-on info in GTDT and export them. By this driver, we can simplify arm_arch_timer drivers, and separate the ACPI GTDT knowledge from it. Signed-off-by: Fu Wei <fu.wei@linaro.org> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com>