Hello, This piece of code was a base for prepare my presentation talk for the U-Boot Mini Summit, which taking place at ELCE2014 conference, 13-th October 2014 Dusseldorf, Germany.
The tittle of talk: "Power(full) framework based on Driver Model" The presentation will be shared after the Summit. This patchset introduces the new one PMIC framework for the U-Boot. It is still under the construction, but the basic functionality was achieved and tested. Please feel free to comment and share the opinion. I think that each patch is described full enough, but for some more design details, please look into the documentation file. It includes some basic examples for the PMIC drivers. Quick summary of: Framework: - The new approach - UCLASS_PMIC - simple and designed for device I/O only - Add new uclass types: UCLASS_PMIC and UCLASS_PMIC_REGULATOR - Two uclass drivers for above types - A common regulator operations - will easy cover the real devices design Drivers: - Introduce new PMIC API for drivers - now everything base on "struct udevice" - Introduce Regulator Voltage descriptors and Operation Mode descriptors which are usually taken from the device tree (board dependent data) - Two uclass device drivers for MAX77686(PMIC+REGULATOR) User Interface: - command pmic, unchanged functionality and ported to the driver model - command regulator(NEW) for safe regulator setup from commandline, - now can check output Voltage and operation mode of the regulators, - also can check the board Voltage limits and driver available modes The future plans: - Wait for the I2c Driver Model implementation - Introduce a common way to bind pmic devices - now done by alias "pmic" - Add additional uclass types: MUIC, CHARGER, BATTERY, MFD and maybe more. - Introduce optimal operations for new uclasses - Port all U-Boot drivers to the new Framework - Remove the old drivers and the old PMIC Framework code The assumptions of this work is: - Add new code to independent files - Keep two Frameworks as independent and without conflicts - Don't mix OLD/NEW Framework code - for the readability - Port all drivers using new API - Remove the old Framework and the old drivers A disadvantage: - some parts of the present code is duplicated Need help: - After merge this, it is welcome to help with driver porting. - Everything should be tested The extra feature: The first commit introduces errno_str() function. It is a common function which I hope will be usefull for commands and not only. If any visible error says: -19 or some other magic number, then it means that this function should be used. U-Boot Mini Summit members: This code is maybe not as good as it could be, but the time was limited, and the conference is comming soon. I don't expects a code review of this now, but it would be nice if you take a look of this piece of code before our U-Boot Mini Summit. Of course it depends on you. Best Regards and see you in Dusseldorf! Przemyslaw Marczak Przemyslaw Marczak (19): lib: errno: introduce errno_str(): returns errno related message exynos: config-common: enable errno_str() function exynos: config-common: enable generic fs command dm: pmic: add implementation of driver model pmic uclass dm: pmic: add implementation of driver model regulator uclass dm: common: board_r: add call and weak of power_init_dm() dm: pmic: add max77686 pmic driver dm: regulator: add max77686 regulator driver dm: pmic: new commands: pmic and regulator dm: board:samsung: power_init_board: add requirement of CONFIG_DM_PMIC doc: driver-model: pmic and regulator uclass documentation samsung: board: lcd menu: check if any power framework is enabled samsung: misc: power_key_pressed: add support to dm pmic framework trats2: board: add support to dm pmic api trats2: dts: max77686: add pmic alias and names cleanup trats2: config: enable dm pmic, dm regulator api, dm max77686 odroid: board: add support to dm pmic api odroid: dts: add 'voltage-regulators' description to max77686 node odroid: config: enable dm pmic, dm regulator and max77686 driver Makefile | 1 + arch/arm/dts/exynos4412-odroid.dts | 250 +++++++++- arch/arm/dts/exynos4412-trats2.dts | 17 +- board/samsung/common/board.c | 5 +- board/samsung/common/misc.c | 21 +- board/samsung/odroid/odroid.c | 31 +- board/samsung/trats2/trats2.c | 208 ++------ common/board_r.c | 8 + doc/driver-model/dm-pmic-framework.txt | 450 ++++++++++++++++++ drivers/power/Makefile | 6 +- drivers/power/cmd_pmic.c | 845 +++++++++++++++++++++++++++++++++ drivers/power/pmic-uclass.c | 255 ++++++++++ drivers/power/pmic/Makefile | 1 + drivers/power/pmic/max77686.c | 89 ++++ drivers/power/pmic_i2c.c | 136 ++++++ drivers/power/pmic_spi.c | 137 ++++++ drivers/power/regulator-uclass.c | 250 ++++++++++ drivers/power/regulator/Makefile | 8 + drivers/power/regulator/max77686.c | 749 +++++++++++++++++++++++++++++ include/configs/exynos-common.h | 3 + include/configs/odroid.h | 8 +- include/configs/trats2.h | 14 +- include/dm/uclass-id.h | 4 + include/errno.h | 3 + include/power/max77686_pmic.h | 28 +- include/power/pmic.h | 82 ++++ include/power/regulator.h | 267 +++++++++++ lib/Makefile | 1 + lib/errno_str.c | 147 ++++++ 29 files changed, 3823 insertions(+), 201 deletions(-) create mode 100644 doc/driver-model/dm-pmic-framework.txt create mode 100644 drivers/power/cmd_pmic.c create mode 100644 drivers/power/pmic-uclass.c create mode 100644 drivers/power/pmic/max77686.c create mode 100644 drivers/power/pmic_i2c.c create mode 100644 drivers/power/pmic_spi.c create mode 100644 drivers/power/regulator-uclass.c create mode 100644 drivers/power/regulator/Makefile create mode 100644 drivers/power/regulator/max77686.c create mode 100644 include/power/regulator.h create mode 100644 lib/errno_str.c -- 1.9.1 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
