[PATCH RFC 0/3] ACPI, clocksource: add GTDT and ARM memory-mapped timer support

From: fu . wei
Date: Wed Oct 28 2015 - 10:33:19 EST

From: Fu Wei <fu.wei@xxxxxxxxxx>

This patchset:
(1)Introduce ACPI GTDT parser: drivers/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.

(2)Simplify ACPI code for arch timer in arm_arch_timer.c

(3)Add memory-mapped timer support in arm_arch_timer.c

[PATCH 2/3] and [PATCH 3/3] depend on a patchset
[PATCH v2 0/5] ACPI probing infrastructure,
https://lkml.org/lkml/2015/9/13/126, which has been accepted by upstream
maintainer, and has been merged in linux-next.git, tag: next-20151013.

The SBSA Generic Watchdog info parsing support have been tested with
a upstreaming SBSA Generic Watchdog driver:
on the following platforms:
(1)ARM Foundation v8 model
(2)AMD Seattle platform

ARM memory-mapped timer support of this patchset has been tested
on the following platforms:
(1)ARM Foundation v8 model

v1: The first upstreaming version.

Fu Wei (3):
ACPI: add GTDT table parse driver into ACPI driver
clocksource: simplify ACPI code in arm_arch_timer.c
clocksource: add memory-mapped timer support in arm_arch_timer.c

drivers/acpi/Kconfig | 9 +
drivers/acpi/Makefile | 1 +
drivers/acpi/gtdt.c | 367 +++++++++++++++++++++++++++++++++++
drivers/clocksource/arm_arch_timer.c | 176 +++++++++++++----
include/clocksource/arm_arch_timer.h | 19 ++
include/linux/acpi.h | 17 ++
6 files changed, 554 insertions(+), 35 deletions(-)
create mode 100644 drivers/acpi/gtdt.c


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