From: Anup Patel <anup.patel@wdc.com>
To: Palmer Dabbelt <palmer@dabbelt.com>,
Palmer Dabbelt <palmerdabbelt@google.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
Pavel Machek <pavel@ucw.cz>, Rob Herring <robh+dt@kernel.org>
Cc: Sandeep Tripathy <milun.tripathy@gmail.com>,
Atish Patra <atish.patra@wdc.com>,
Alistair Francis <Alistair.Francis@wdc.com>,
Liush <liush@allwinnertech.com>, Anup Patel <anup@brainfault.org>,
devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Anup Patel <anup.patel@wdc.com>
Subject: [RFC PATCH v3 0/8] RISC-V CPU Idle Support
Date: Thu, 18 Mar 2021 18:35:04 +0530 [thread overview]
Message-ID: <20210318130512.1025416-1-anup.patel@wdc.com> (raw)
This series adds RISC-V CPU Idle support using SBI HSM suspend function.
The RISC-V SBI CPU idle driver added by this series is highly inspired
from the ARM PSCI CPU idle driver.
At high-level, this series includes the following changes:
1) Preparatory arch/riscv patches (Patches 1 to 3)
2) Defines for RISC-V SBI HSM suspend (Patch 4)
3) Preparatory patch to share code between RISC-V SBI CPU idle driver
and ARM PSCI CPU idle driver (Patch 5)
4) RISC-V SBI CPU idle driver and related DT bindings (Patches 6 to 7)
These patches can be found in riscv_sbi_hsm_suspend_v3 branch at
https://github.com/avpatel/linux
Special thanks Sandeep Tripathy for providing early feeback on SBI HSM
support in all above projects (RISC-V SBI specification, OpenSBI, and
Linux RISC-V).
Changes since v2:
- Rebased on Linux-5.12-rc3
- Updated PATCH7 to add common DT bindings for both ARM and RISC-V
idle states
- Added "additionalProperties = false" for both idle-states node and
child nodes in PATCH7
Changes since v1:
- Fixex minor typo in PATCH1
- Use just "idle-states" as DT node name for CPU idle states
- Added documentation for "cpu-idle-states" DT property in
devicetree/bindings/riscv/cpus.yaml
- Added documentation for "riscv,sbi-suspend-param" DT property in
devicetree/bindings/riscv/idle-states.yaml
Anup Patel (8):
RISC-V: Enable CPU_IDLE drivers
RISC-V: Rename relocate() and make it global
RISC-V: Add arch functions for non-retentive suspend entry/exit
RISC-V: Add SBI HSM suspend related defines
cpuidle: Factor-out power domain related code from PSCI domain driver
cpuidle: Add RISC-V SBI CPU idle driver
dt-bindings: Add common bindings for ARM and RISC-V idle states
RISC-V: Enable RISC-V SBI CPU Idle driver for QEMU virt machine
.../bindings/{arm => cpu}/idle-states.yaml | 228 +++++++-
.../devicetree/bindings/riscv/cpus.yaml | 6 +
MAINTAINERS | 8 +
arch/riscv/Kconfig | 7 +
arch/riscv/Kconfig.socs | 3 +
arch/riscv/configs/defconfig | 8 +-
arch/riscv/configs/rv32_defconfig | 5 +-
arch/riscv/include/asm/cpuidle.h | 24 +
arch/riscv/include/asm/sbi.h | 27 +-
arch/riscv/include/asm/suspend.h | 35 ++
arch/riscv/kernel/Makefile | 2 +
arch/riscv/kernel/asm-offsets.c | 3 +
arch/riscv/kernel/cpu_ops_sbi.c | 2 +-
arch/riscv/kernel/head.S | 7 +-
arch/riscv/kernel/process.c | 3 +-
arch/riscv/kernel/suspend.c | 86 +++
arch/riscv/kernel/suspend_entry.S | 116 ++++
drivers/cpuidle/Kconfig | 9 +
drivers/cpuidle/Kconfig.arm | 1 +
drivers/cpuidle/Kconfig.riscv | 15 +
drivers/cpuidle/Makefile | 5 +
drivers/cpuidle/cpuidle-psci-domain.c | 244 +--------
drivers/cpuidle/cpuidle-psci.h | 15 +-
drivers/cpuidle/cpuidle-sbi.c | 502 ++++++++++++++++++
...{cpuidle-psci-domain.c => dt_idle_genpd.c} | 165 ++----
drivers/cpuidle/dt_idle_genpd.h | 42 ++
26 files changed, 1184 insertions(+), 384 deletions(-)
rename Documentation/devicetree/bindings/{arm => cpu}/idle-states.yaml (74%)
create mode 100644 arch/riscv/include/asm/cpuidle.h
create mode 100644 arch/riscv/include/asm/suspend.h
create mode 100644 arch/riscv/kernel/suspend.c
create mode 100644 arch/riscv/kernel/suspend_entry.S
create mode 100644 drivers/cpuidle/Kconfig.riscv
create mode 100644 drivers/cpuidle/cpuidle-sbi.c
copy drivers/cpuidle/{cpuidle-psci-domain.c => dt_idle_genpd.c} (52%)
create mode 100644 drivers/cpuidle/dt_idle_genpd.h
--
2.25.1
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next reply other threads:[~2021-03-18 13:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-18 13:05 Anup Patel [this message]
2021-03-18 13:05 ` [RFC PATCH v3 1/8] RISC-V: Enable CPU_IDLE drivers Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 2/8] RISC-V: Rename relocate() and make it global Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 3/8] RISC-V: Add arch functions for non-retentive suspend entry/exit Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 4/8] RISC-V: Add SBI HSM suspend related defines Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 5/8] cpuidle: Factor-out power domain related code from PSCI domain driver Anup Patel
2021-04-15 13:01 ` Ulf Hansson
2021-05-09 4:49 ` Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 6/8] cpuidle: Add RISC-V SBI CPU idle driver Anup Patel
2021-03-18 13:05 ` [RFC PATCH v3 7/8] dt-bindings: Add common bindings for ARM and RISC-V idle states Anup Patel
2021-03-26 1:05 ` Rob Herring
2021-03-18 13:05 ` [RFC PATCH v3 8/8] RISC-V: Enable RISC-V SBI CPU Idle driver for QEMU virt machine Anup Patel
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