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Message-Id: <1387815830-8794-1-git-send-email-pawel.moll@arm.com> Date: Mon, 23 Dec 2013 16:23:32 +0000 From: Pawel Moll <pawel.moll@....com> To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Cc: Samuel Ortiz <sameo@...ux.intel.com>, Arnd Bergmann <arnd@...db.de>, Jon Medhurst <tixy@...aro.org>, arm@...nel.org, Olof Johansson <olof@...om.net>, Pawel Moll <pawel.moll@....com> Subject: [RFC 00/18] Versatile Express config rework Greetings, When I promised to rework vexpress' MFD & co. components, I did't expect it would take almost half a year to post some patches... The worst thing is that I got most of this stuff done months ago, but not until the usual holiday period came I got a chance to post it. Anyway, the following series retires custom "function" interface, replacing it with regmap. For a price of a single WARN_ON removed (05/18 "driver core: Do not WARN when devres list is not empty at probe time"), I've managed to hide all possible VE-specific ways of talking to the peripherals behind regmap, creating platform devices with platform-specific regmap config added as devm. I also had to solve a problem of early initialization required for the core components, where early doesn't mean "very early" but simply "earlier than the other ones". The main issue was of_platform_populate() instantiating devices for nodes that already has been serviced. There were some attempts to fix it in the past (including a struct device pointer in struct device_node). My proposal is just an extra "already populated" flag in device_node, set by generic device functions, which makes the of_platform_populate() to skip such node. In the end the vexpress-sysreg is almost exclusively a "pure" MFD device, creating mfd_cells for other drivers. The system config interface has been split into a "misc" driver (may become a "soc" driver if the directory materializes) and the config bus core (using standard device "class" now) went of course into "bus". There is also a bunch of other, less important patches all around the place. I would appreciate the respective maintainers having a look at them. If anyone wants to take the small changes in for 3.16 that's cool, if not I'd more than happy to recieve an ack and merge it with the whole series in the future. This series is based on 3.15-rc5 and my hope is to get it polished enough in time for 3.17 merge window. Have a great time whatever your plans are for the next 2 weeks! Pawel Pawel Moll (17): mfd: syscon: Consider platform data a regmap config name power/reset: vexpress: Use sched_clock as the time source GPIO: gpio-generic: Add label to platform data driver core & of: Mark of_nodes of added device as populated driver core: Do not WARN when devres list is not empty at probe time regmap: Formalise use of non-bus context regmap: debugfs: Always create "registers" & "access" files hwmon: vexpress: Use regmap instead of custom interface power/reset: vexpress: Use regmap instead of custom interface regulator: vexpress: Use regmap instead of custom interface clocksource: Sched clock source for Versatile Express clk: versatile: Split config options for sp810 and vexpress_osc clk: versatile: Use regmap instead of custom interface ARM: vexpress: Simplify SMP operations for DT-powered system bus: Versatile Express configuration bus misc: Versatile Express System Config interface driver mfd: vexpress: Split sysreg functions into MFD cells Sudeep KarkadaNagesha (1): ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count .../devicetree/bindings/arm/vexpress-sysreg.txt | 37 +- arch/arm/boot/dts/vexpress-v2m-rs1.dtsi | 76 ++- arch/arm/boot/dts/vexpress-v2m.dtsi | 76 ++- arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 5 +- arch/arm/mach-vexpress/core.h | 3 +- arch/arm/mach-vexpress/ct-ca9x4.c | 8 +- arch/arm/mach-vexpress/platsmp.c | 187 ++----- arch/arm/mach-vexpress/v2m.c | 74 +-- arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi | 2 +- drivers/base/core.c | 4 + drivers/base/dd.c | 1 - drivers/base/regmap/internal.h | 3 +- drivers/base/regmap/regmap-debugfs.c | 10 +- drivers/base/regmap/regmap.c | 34 +- drivers/bus/Kconfig | 8 + drivers/bus/Makefile | 2 + drivers/bus/vexpress-config.c | 178 +++++++ drivers/clk/Kconfig | 9 +- drivers/clk/versatile/Kconfig | 26 + drivers/clk/versatile/Makefile | 5 +- drivers/clk/versatile/clk-vexpress-osc.c | 70 +-- drivers/clocksource/Kconfig | 9 + drivers/clocksource/Makefile | 1 + drivers/clocksource/vexpress.c | 40 ++ drivers/gpio/gpio-generic.c | 2 + drivers/hwmon/Kconfig | 3 +- drivers/hwmon/vexpress.c | 29 +- drivers/mfd/Kconfig | 15 +- drivers/mfd/Makefile | 2 +- drivers/mfd/syscon.c | 1 + drivers/mfd/vexpress-config.c | 288 ----------- drivers/mfd/vexpress-sysreg.c | 563 ++++++--------------- drivers/misc/Kconfig | 9 + drivers/misc/Makefile | 1 + drivers/misc/vexpress-syscfg.c | 322 ++++++++++++ drivers/of/device.c | 16 + drivers/of/platform.c | 6 +- drivers/power/reset/Kconfig | 2 +- drivers/power/reset/vexpress-poweroff.c | 15 +- drivers/regulator/Kconfig | 3 +- drivers/regulator/vexpress.c | 52 +- include/linux/basic_mmio_gpio.h | 1 + include/linux/of.h | 6 + include/linux/of_device.h | 11 + include/linux/regmap.h | 6 +- include/linux/vexpress.h | 101 +--- 46 files changed, 1168 insertions(+), 1154 deletions(-) create mode 100644 drivers/bus/vexpress-config.c create mode 100644 drivers/clk/versatile/Kconfig create mode 100644 drivers/clocksource/vexpress.c delete mode 100644 drivers/mfd/vexpress-config.c create mode 100644 drivers/misc/vexpress-syscfg.c -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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