[v1,0/6] Consolidate and improve NVIDIA Tegra CPUIDLE driver(s)
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Message ID 20190707233809.14400-1-digetx@gmail.com
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  • Consolidate and improve NVIDIA Tegra CPUIDLE driver(s)
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Dmitry Osipenko July 7, 2019, 11:38 p.m. UTC
Hello,

I was spending quite some time recently trying to hunt down CPU-suspend
bug on Tegra30 SoC and in the end it was nailed. During that time I
realized that the CPU Idle drivers could get some polish and gain new
features, thus that's what this series does:

  1. Unifies Tegra20/30/114 drivers into a single driver and moves it out
     into common drivers/cpuidle/ directory.

  2. Enables CPU cluster power-down idling state on Tegra30.

  3. Removes CPUIDLE_FLAG_TIMER_STOP from all of the states since that
     flag is not relevant anymore.

In the end there is a quite nice clean up of the Terga CPUIDLE driver(s)
and of the Tegra's arch code in general. Please review, thanks!

Dmitry Osipenko (6):
  ARM: tegra: Remove cpuidle drivers
  ARM: tegra: Expose functions required for cpuidle driver
  cpuidle: Add unified driver for NVIDIA Tegra SoCs
  cpuidle: tegra: Support CPU cluster power-down on Tegra30
  cpuidle: tegra: Remove CPUIDLE_FLAG_TIMER_STOP from Tegra114/124
    idle-state
  cpuidle: tegra: Remove CPUIDLE_FLAG_TIMER_STOP from all states

 arch/arm/mach-tegra/Makefile           |  15 +-
 arch/arm/mach-tegra/cpuidle-tegra114.c |  89 ----------
 arch/arm/mach-tegra/cpuidle-tegra20.c  | 212 ----------------------
 arch/arm/mach-tegra/cpuidle-tegra30.c  | 132 --------------
 arch/arm/mach-tegra/cpuidle.c          |  50 ------
 arch/arm/mach-tegra/cpuidle.h          |  21 ---
 arch/arm/mach-tegra/irq.c              |  18 --
 arch/arm/mach-tegra/irq.h              |  11 --
 arch/arm/mach-tegra/platsmp.c          |   2 -
 arch/arm/mach-tegra/pm.c               |  27 +--
 arch/arm/mach-tegra/pm.h               |   4 -
 arch/arm/mach-tegra/reset-handler.S    |  11 --
 arch/arm/mach-tegra/reset.h            |   9 +-
 arch/arm/mach-tegra/sleep-tegra20.S    | 190 +-------------------
 arch/arm/mach-tegra/sleep.h            |  13 --
 arch/arm/mach-tegra/tegra.c            |   7 +-
 drivers/cpuidle/Kconfig.arm            |   8 +
 drivers/cpuidle/Makefile               |   1 +
 drivers/cpuidle/cpuidle-tegra.c        | 232 +++++++++++++++++++++++++
 drivers/soc/tegra/Kconfig              |   1 -
 include/linux/clk/tegra.h              |  13 ++
 include/soc/tegra/cpuidle.h            |   2 +-
 include/soc/tegra/pm.h                 |  28 +++
 23 files changed, 302 insertions(+), 794 deletions(-)
 delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra114.c
 delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra20.c
 delete mode 100644 arch/arm/mach-tegra/cpuidle-tegra30.c
 delete mode 100644 arch/arm/mach-tegra/cpuidle.c
 delete mode 100644 arch/arm/mach-tegra/cpuidle.h
 delete mode 100644 arch/arm/mach-tegra/irq.h
 create mode 100644 drivers/cpuidle/cpuidle-tegra.c