From: Fu Wei fu.wei@linaro.org
This patchset: (1)Preparation for adding GTDT support in arm_arch_timer: 1. Move some enums and marcos to header file; 2. Add a new enum for spi type; 3. Improve printk relevant code; 4. use readq to get 64-bit CNTVCT.
(2)Introduce ACPI GTDT parser: drivers/acpi/arm64/acpi_gtdt.c Parse all kinds of timer in GTDT table of ACPI:arch timer, memory-mapped timer and SBSA Generic Watchdog timer. This driver can help to simplify all the relevant timer drivers, and separate all the ACPI GTDT knowledge from them.
(3)Simplify ACPI code for arm_arch_timer
(4)Add GTDT support for ARM memory-mapped timer
This patchset has been tested on the following platforms: (1)ARM Foundation v8 model
Changelog: v8: https://lkml.org/lkml/2016/7/ Improve "pr_fmt(fmt)" definition: add "ACPI" in front of "GTDT", and also improve printk message. Simplify is_timer_block and is_watchdog. Merge acpi_gtdt_desc_init and gtdt_arch_timer_init into acpi_gtdt_init(); Delete __init in include/linux/acpi.h for GTDT API Make ARM64 select GTDT. Delete "#include <linux/module.h>" from acpi_gtdt.c Simplify GT block parse code.
v7: https://lkml.org/lkml/2016/7/13/769 Move the GTDT driver to drivers/acpi/arm64 Add add the ARM64-specific ACPI Support maintainers in MAINTAINERS Merge 3 patches of GTDT parser driver. Fix the for_each_platform_timer bug.
v6: https://lkml.org/lkml/2016/6/29/580 split the GTDT driver to 4 parts: basic, arch_timer, memory-mapped timer, and SBSA Generic Watchdog timer Improve driver by suggestions and example code from Daniel Lezcano
v5: https://lkml.org/lkml/2016/5/24/356 Sorting out all patches, simplify the API of GTDT driver: GTDT driver just fills the data struct for arm_arch_timer driver.
v4: https://lists.linaro.org/pipermail/linaro-acpi/2016-March/006667.html Delete the kvm relevant patches Separate two patches for sorting out the code for arm_arch_timer. Improve irq info export code to allow missing irq info in GTDT table.
v3: https://lkml.org/lkml/2016/2/1/658 Improve GTDT driver code: (1)improve pr_* by defining pr_fmt(fmt) (2)simplify gtdt_sbsa_gwdt_init (3)improve gtdt_arch_timer_data_init, if table is NULL, it will try to get GTDT table. Move enum ppi_nr to arm_arch_timer.h, and add enum spi_nr. Add arm_arch_timer get ppi from DT and GTDT support for kvm.
v2: https://lkml.org/lkml/2015/12/2/10 Rebase to latest kernel version(4.4-rc3). Fix the bug about the config problem, use CONFIG_ACPI_GTDT instead of CONFIG_ACPI in arm_arch_timer.c
v1: The first upstreaming version: https://lkml.org/lkml/2015/10/28/553
Fu Wei (9): clocksource/drivers/arm_arch_timer: Move enums and defines to header file clocksource/drivers/arm_arch_timer: Add a new enum for spi type clocksource/drivers/arm_arch_timer: Improve printk relevant code clocksource/drivers/arm_arch_timer: use readq to get 64-bit CNTVCT acpi/arm64: Add GTDT table parse driver clocksource/drivers/arm_arch_timer: Simplify ACPI support code. acpi/arm64: Add memory-mapped timer support in GTDT driver clocksource/drivers/arm_arch_timer: Add GTDT support for memory-mapped timer acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver
arch/arm64/Kconfig | 1 + drivers/acpi/Kconfig | 5 + drivers/acpi/Makefile | 1 + drivers/acpi/arm64/Kconfig | 5 + drivers/acpi/arm64/Makefile | 1 + drivers/acpi/arm64/acpi_gtdt.c | 312 +++++++++++++++++++++++++++++++++++ drivers/clocksource/Kconfig | 2 +- drivers/clocksource/arm_arch_timer.c | 233 +++++++++++++++++--------- drivers/watchdog/Kconfig | 1 + include/clocksource/arm_arch_timer.h | 32 ++++ include/linux/acpi.h | 7 + 11 files changed, 522 insertions(+), 78 deletions(-) create mode 100644 drivers/acpi/arm64/Kconfig create mode 100644 drivers/acpi/arm64/Makefile create mode 100644 drivers/acpi/arm64/acpi_gtdt.c