Patch series introducing support for ROHM BD71828 PMIC ROHM BD71828 is a power management IC containing 7 bucks and 7 LDOs. All regulators can either be controlled individually via I2C. Bucks 1,2,6 and 7 can also be assigned to a "regulator group" controlled by run-levels. Eg. Run level specific voltages and enable/disable statuses for each of these bucks can be set via register interface. The buck run-level group assignment (selection if buck is to be controlled individually or via run-levels) can be changed at run-time via I2C. Run level changes can then be initiated wither via I2C writes or GPIO. and when run-level is changed, state of all bucks which are set to be controlled via run-levels are changed accrdingly. This control mechanism selection (I2C or GPIO) is selected by data in one time programmable PMIC memory area (during production) and can't be changed later. In addition to the bucks and LDOs there are: - The usual clk gate - 4 IO pins (mostly usable as GPO or tied to specific purpose) - power button support - RTC - two LEDs - battery charger - HALL sensor input This patch series adds support to regulators, clk, RTC, GPIOs and LEDs. Power-supply driver for charger is "under construction" and not included in this RFC series. Reason for RFC status is the regulator grouping to run-levels. I don't know what would be the best way to do what patches 6,7 and 8 intend to provide. (Sure some of this is visible also patches 11 and 12 which provide dt binding documents.) All suggestions are welcome. Rest of the patches should be business as usual. Patch 1: BD71828 MFD core. Patch 2: Power button support using GPIO keys. Patch 3: CLK gate support using existing clk-bd718x7 Patch 4: Split existing bd718x7 regulator driver to generic ROHM dt parsing portion (used by more than one ROHM drivers) and bd718x8 specific parts Patch 5: Basic regulator support (individual control via I2C). This should be pretty standard stuff. Patch 6: Add support for getting regulator voltages when GPIO controlled run-levels are used. Allow specifying voltages for run-levels via DT. Allow controlling run-levels via sysfs entries (I am not happy about this. Probably should only provide in-kernel API for this or is there better ideas? Showing can be done vis sysfs? Debugfs?) Patch 7: Support setting/getting run-levels when they are controlled via I2C instead of GPIO. Add in-kernel API for settin run-level voltages for regulators at run-time. Patch 8: Add in-kernel APIs for changing the RUN-level. Safer than sysfs I guess. But is there some better method for controlling this kind of dynamic group of regulators? Patch 9: Support BD71828 RTC block using BD70528 RTC driver Patch 10: Allow control of GP(I)O pins on BD71828 via GPIO subsystem Patch 11: Support toggling the LEDs Patch 12: dt-bindings for BD71828 PMIC Patch 13: dt-bindings for regulators on BD71828 PMIC This patch series is based on v5.3-rc4 --- Matti Vaittinen (13): mfd: bd71828: Support ROHM BD71828 PMIC - core mfd: input: bd71828: Add power-key support clk: bd718x7: Support ROHM BD71828 clk block regulator: bd718x7: Split driver to common and bd718x7 specific parts regulator: bd71828: Basic support for ROHM bd71828 PMIC regulators regulator: bd71828: Add GPIO based run-level control for regulators regulator: bd71828: enhanced run-level support regulator: bd71828: Support in-kernel APIs to change run-level mfd: rtc: support RTC on ROHM BD71828 with BD70528 driver gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs led: bd71828: Support LED outputs on ROHM BD71828 PMIC dt-bindings: mfd: Document ROHM BD71282 bindings dt-bindings: regulator: Document ROHM BD71282 regulator bindings .../bindings/mfd/rohm,bd71828-pmic.txt | 180 ++ .../regulator/rohm,bd71828-regulator.txt | 164 ++ drivers/clk/Kconfig | 6 +- drivers/clk/clk-bd718x7.c | 15 +- drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-bd71828.c | 161 ++ drivers/leds/Kconfig | 10 + drivers/leds/Makefile | 1 + drivers/leds/leds-bd71828.c | 97 ++ drivers/mfd/Kconfig | 15 + drivers/mfd/Makefile | 2 +- drivers/mfd/rohm-bd71828.c | 350 ++++ drivers/regulator/Kconfig | 16 + drivers/regulator/Makefile | 2 + drivers/regulator/bd71828-regulator.c | 1442 +++++++++++++++++ drivers/regulator/bd718x7-regulator.c | 183 +-- drivers/regulator/rohm-regulator.c | 95 ++ drivers/rtc/Kconfig | 5 +- drivers/rtc/rtc-bd70528.c | 369 +++-- include/linux/mfd/rohm-bd70528.h | 12 +- include/linux/mfd/rohm-bd71828.h | 432 +++++ include/linux/mfd/rohm-generic.h | 45 + include/linux/mfd/rohm-shared.h | 22 + 24 files changed, 3388 insertions(+), 249 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.txt create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd71828-regulator.txt create mode 100644 drivers/gpio/gpio-bd71828.c create mode 100644 drivers/leds/leds-bd71828.c create mode 100644 drivers/mfd/rohm-bd71828.c create mode 100644 drivers/regulator/bd71828-regulator.c create mode 100644 drivers/regulator/rohm-regulator.c create mode 100644 include/linux/mfd/rohm-bd71828.h create mode 100644 include/linux/mfd/rohm-shared.h -- 2.21.0 -- Matti Vaittinen, Linux device drivers ROHM Semiconductors, Finland SWDC Kiviharjunlenkki 1E 90220 OULU FINLAND ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~ Simon says - in Latin please. ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~ Thanks to Simon Glass for the translation =]
