linux-kernel - [PATCH v2 00/14] ARM: at91: PMC driver rework

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Message-Id: <1444660131-14954-1-git-send-email-alexandre.belloni@free-electrons.com>
Date:	Mon, 12 Oct 2015 16:28:37 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-clk@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH v2 00/14] ARM: at91: PMC driver rework

Hi,

This patch set is a cleanup that properly separate drivers needing to access the
PMC (PM and USB) from the clock driver by exposing the PMC as a syscon.

This also allows to implement a fix for preempt-rt. Currently, at91 platform are
crashing when using preempt-rt because the irq handler are transformed in
threaded irq handler but at the time the pmc registers its clocks, it is not
possible to creat threads, leading to a NULL pointer dereference in the kernel.

The new infrastructure uses polling until it is late enough to register threaded
irqs.


Changes in v2:
 - added Felipe's ack
 - dropped the first two patches as they are already in clk-next
 - reworked struct clk_main as suggested by Boris
 - changed the commit descritpion for "clk: at91: only disable available IRQs"
   as suggested by Ludovic
 - added Stephen's ack on patch 2

Alexandre Belloni (11):
  ARM: at91/dt: use syscon for PMC
  clk: at91: clk-main: factorize irq handling
  clk: at91: make IRQ optional and register them later
  clk: at91: pmc: merge at91_pmc_init in atmel_pmc_probe
  clk: at91: pmc: move pmc structures to C file
  ARM: at91: pm: simply call at91_pm_init
  ARM: at91: pm: find and remap the pmc
  ARM: at91: pm: move idle functions to pm.c
  ARM: at91: remove useless includes and function prototypes
  usb: gadget: atmel: access the PMC using regmap
  clk: at91: pmc: drop at91_pmc_base

Boris Brezillon (3):
  clk: at91: make use of syscon to share PMC registers in several
    drivers
  clk: at91: make use of syscon/regmap internally
  clk: at91: only disable available IRQs

 arch/arm/boot/dts/at91rm9200.dtsi       |   2 +-
 arch/arm/boot/dts/at91sam9260.dtsi      |   2 +-
 arch/arm/boot/dts/at91sam9261.dtsi      |   2 +-
 arch/arm/boot/dts/at91sam9263.dtsi      |   2 +-
 arch/arm/boot/dts/at91sam9g45.dtsi      |   2 +-
 arch/arm/boot/dts/at91sam9n12.dtsi      |   2 +-
 arch/arm/boot/dts/at91sam9rl.dtsi       |   2 +-
 arch/arm/boot/dts/at91sam9x5.dtsi       |   2 +-
 arch/arm/boot/dts/sama5d2.dtsi          |   2 +-
 arch/arm/boot/dts/sama5d3.dtsi          |   2 +-
 arch/arm/boot/dts/sama5d4.dtsi          |   2 +-
 arch/arm/mach-at91/Kconfig              |   1 +
 arch/arm/mach-at91/at91rm9200.c         |   2 -
 arch/arm/mach-at91/at91sam9.c           |   2 -
 arch/arm/mach-at91/generic.h            |  13 +-
 arch/arm/mach-at91/pm.c                 |  69 ++++-
 arch/arm/mach-at91/sama5.c              |   2 +-
 drivers/clk/at91/clk-h32mx.c            |  33 ++-
 drivers/clk/at91/clk-main.c             | 430 ++++++++++++++++++--------------
 drivers/clk/at91/clk-master.c           | 134 ++++++----
 drivers/clk/at91/clk-peripheral.c       | 131 ++++++----
 drivers/clk/at91/clk-pll.c              | 190 +++++++++-----
 drivers/clk/at91/clk-plldiv.c           |  42 ++--
 drivers/clk/at91/clk-programmable.c     |  92 ++++---
 drivers/clk/at91/clk-slow.c             |  27 +-
 drivers/clk/at91/clk-smd.c              |  54 ++--
 drivers/clk/at91/clk-system.c           | 129 +++++++---
 drivers/clk/at91/clk-usb.c              | 121 +++++----
 drivers/clk/at91/clk-utmi.c             | 116 ++++++---
 drivers/clk/at91/pmc.c                  | 300 +++++-----------------
 drivers/clk/at91/pmc.h                  |  93 +------
 drivers/usb/gadget/udc/atmel_usba_udc.c |  20 +-
 drivers/usb/gadget/udc/atmel_usba_udc.h |   2 +
 include/linux/clk/at91_pmc.h            |  12 -
 34 files changed, 1069 insertions(+), 968 deletions(-)

-- 
2.1.4

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