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Message-ID: <1364993634-6378-1-git-send-email-kishon@ti.com> Date: Wed, 3 Apr 2013 18:23:48 +0530 From: Kishon Vijay Abraham I <kishon@...com> To: <balbi@...com>, <gregkh@...uxfoundation.org>, <arnd@...db.de>, <akpm@...ux-foundation.org>, <swarren@...dotorg.org>, <sylvester.nawrocki@...il.com>, <rob@...dley.net> CC: <netdev@...r.kernel.org>, <davem@...emloft.net>, <cesarb@...arb.net>, <linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>, <tony@...mide.com>, <grant.likely@...retlab.ca>, <rob.herring@...xeda.com>, <b-cousson@...com>, <linux@....linux.org.uk>, <eballetbo@...il.com>, <javier@...hile0.org>, <kishon@...com>, <mchehab@...hat.com>, <santosh.shilimkar@...com>, <broonie@...nsource.wolfsonmicro.com>, <swarren@...dia.com>, <linux-doc@...r.kernel.org>, <devicetree-discuss@...ts.ozlabs.org>, <linux-arm-kernel@...ts.infradead.org> Subject: [PATCH v5 0/6] Generic PHY Framework Added a generic PHY framework that provides a set of APIs for the PHY drivers to create/destroy a PHY and APIs for the PHY users to obtain a reference to the PHY with or without using phandle. To obtain a reference to the PHY without using phandle, the platform specfic intialization code (say from board file) should have already called phy_bind with the binding information. The binding information consists of phy's device name, phy user device name and an index. The index is used when the same phy user binds to mulitple phys. This framework will be of use only to devices that uses external PHY (PHY functionality is not embedded within the controller). The intention of creating this framework is to bring the phy drivers spread all over the Linux kernel to drivers/phy to increase code re-use and to increase code maintainability. Comments to make PHY as bus wasn't done because PHY devices can be part of other bus and making a same device attached to multiple bus leads to bad design. Making omap-usb2 and twl4030 to use this framework is provided as a sample. This patch series is developed on linus tree HEAD. Once the patch series gets finalised I'll resend omap-usb2 and twl4030 part based on Felipe's tree. Changes from v4: * removed of_phy_get_with_args/devm_of_phy_get_with_args. Now the *phy providers* should use their custom implementation of of_xlate or use of_phy_xlate to get *phy instance* from *phy providers*. * Added of_phy_xlate to be used by *phy providers* if it provides only one PHY. * changed phy_core from having subsys_initcall to module_init. * other minor fixes. Changes from v3: * Changed the return value of PHY APIs to ENOSYS * Added APIs of_phy_get_with_args/devm_of_phy_get_with_args to support getting PHYs if the same IP implements multiple PHYs. * modified phy_bind API so that the binding information can now be _updated_. In effect of this removed the binding information added in board files and added only in usb-musb.c. If a particular board uses a different phy binding, it can update it in board file after usb_musb_init(). * Added Documentation/devicetree/bindings/phy/phy-bindings.txt for dt binding information. Changes from v2: * removed phy_descriptor structure completely so changed the APIs which were taking phy_descriptor as parameters * Added 2 more APIs *of_phy_get_byname* and *devm_of_phy_get_byname* to be used by PHY user drivers which has *phy* and *phy-names* binding in the dt data * Fixed a few typos * Removed phy_list and we now use class_dev_iter_init, class_dev_iter_next and class_dev_iter_exit for traversing through the phy list. (Note we still need phy_bind list and phy_bind_mutex). * Changed the sysfs entry name from *bind* to *phy_bind*. Changes from v1: * Added Documentation for the PHY framework * Added few more APIs mostly w.r.t devres * Modified omap-usb2 and twl4030 to make use of the new framework Did USB enumeration testing in panda and beagle. Kishon Vijay Abraham I (6): drivers: phy: add generic PHY framework usb: phy: omap-usb2: use the new generic PHY framework usb: otg: twl4030: use the new generic PHY framework ARM: OMAP: USB: Add phy binding information ARM: dts: omap: update usb_otg_hs data usb: musb: omap2430: use the new generic PHY framework Documentation/ABI/testing/sysfs-class-phy | 15 + .../devicetree/bindings/phy/phy-bindings.txt | 67 +++ Documentation/devicetree/bindings/usb/omap-usb.txt | 5 + Documentation/devicetree/bindings/usb/usb-phy.txt | 6 + Documentation/phy.txt | 113 ++++ MAINTAINERS | 7 + arch/arm/boot/dts/omap3.dtsi | 2 + arch/arm/boot/dts/omap4.dtsi | 3 + arch/arm/boot/dts/twl4030.dtsi | 1 + arch/arm/mach-omap2/usb-musb.c | 7 +- drivers/Kconfig | 2 + drivers/Makefile | 2 + drivers/phy/Kconfig | 13 + drivers/phy/Makefile | 5 + drivers/phy/phy-core.c | 616 ++++++++++++++++++++ drivers/usb/musb/musb_core.h | 2 + drivers/usb/musb/omap2430.c | 22 +- drivers/usb/otg/twl4030-usb.c | 37 ++ drivers/usb/phy/omap-usb2.c | 48 ++ include/linux/phy/phy.h | 228 ++++++++ 20 files changed, 1194 insertions(+), 7 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-class-phy create mode 100644 Documentation/devicetree/bindings/phy/phy-bindings.txt create mode 100644 Documentation/phy.txt create mode 100644 drivers/phy/Kconfig create mode 100644 drivers/phy/Makefile create mode 100644 drivers/phy/phy-core.c create mode 100644 include/linux/phy/phy.h -- 1.7.10.4 -- 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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