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, and GPIOs. LED support will be added later when fate of RFC "Add DT node finding and parsing to core" is known. https://lore.kernel.org/lkml/cover.1572351774.git.matti.vaittinen@xxxxxxxxxxxxxxxxx/ 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. Patches 8 and 9 bring more or less the usual regulator support. Patches 10, 11, 12 add run-level control which I am not entirely happy with. I don't like sysfs interface for run-level control. I am not entirely happy with the in-kernel APIs either as those provide run-level control via one *regulator pointer - but change impacts to more than one regulator. All suggestions are appreciated and welcome. Rest of the patches should be business as usual. Changelog v3: DT-Bindings: - yamlify - add LED binding doc CLK: - Move clk register definitions from MFD headers to clk driver GPIO: - Add generic direction define and use it. LED: - Drop LED driver from the series (for now). Changelog v2: Mainly RTC and GPIO fixes suggested by Alexandre and Bartosz General: -Patch ordering changed to provide dt binding documents right after the MFD core. DT-Bindings for regulators (Patch 3) -Fix typo in PMIC model number RTC (patch 11) -Reverted renaming in order to reduce patch size. -Reworded commit message BD71828 regulator (patch 7) -Add MODULE_ALIAS GPIO (patch 12) -Remove file-name from comment -prefix IN and OUT defines with chip type -improved documentation for the INPUT only pin. -removed empty left-over function -removed unnecessary #ifdef CONFIG_OF_GPIO -removed unnecessary error print -Add MODULE_ALIAS Patch 1: BD71828 MFD core. Patch 2: dt-bindings for BD71828 PMIC Patch 3: dt-bindings for regulators on BD71828 PMIC Patch 4: dt-bindings for LEDs on BD71828 PMIC Patch 5: Power button support using GPIO keys. Patch 6: CLK gate support using existing clk-bd718x7 Patch 7: Move clk register definitions from headers to driver Patch 8: Split existing bd718x7 regulator driver to generic ROHM dt parsing portion (used by more than one ROHM drivers) and bd718x8 specific parts Patch 9: Basic regulator support (individual control via I2C). This should be pretty standard stuff. Patch 10: 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 11: 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 12: 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 13: Support BD71828 RTC block using BD70528 RTC driver Patch 14: Add generic GPIO direction defines Patch 15: Allow control of GP(I)O pins on BD71828 via GPIO subsystem Patch 16: Support toggling the LEDs This patch series is based on v5.4-rc5 --- Matti Vaittinen (15): mfd: bd71828: Support ROHM BD71828 PMIC - core dt-bindings: mfd: Document ROHM BD71828 bindings dt-bindings: regulator: Document ROHM BD71282 regulator bindings dt-bindings: leds: ROHM BD71282 PMIC LED driver mfd: input: bd71828: Add power-key support clk: bd718x7: Support ROHM BD71828 clk block clk: bd718x7: simplify header dependencies 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 rtc: bd70528 add BD71828 support gpio: Add definition for GPIO direction gpio: bd71828: Initial support for ROHM BD71828 PMIC GPIOs .../bindings/leds/rohm,leds-bd71828.yaml | 46 + .../bindings/mfd/rohm,bd71828-pmic.yaml | 249 +++ .../regulator/rohm,bd71828-regulator.yaml | 123 ++ drivers/clk/Kconfig | 6 +- drivers/clk/clk-bd718x7.c | 37 +- drivers/gpio/Kconfig | 12 + drivers/gpio/Makefile | 1 + drivers/gpio/gpio-bd71828.c | 149 ++ 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 | 1443 +++++++++++++++++ drivers/regulator/bd718x7-regulator.c | 183 +-- drivers/regulator/rohm-regulator.c | 95 ++ drivers/rtc/Kconfig | 3 +- drivers/rtc/rtc-bd70528.c | 150 +- include/linux/gpio/driver.h | 3 + include/linux/mfd/rohm-bd70528.h | 19 +- include/linux/mfd/rohm-bd71828.h | 428 +++++ include/linux/mfd/rohm-bd718x7.h | 6 - include/linux/mfd/rohm-generic.h | 45 + include/linux/mfd/rohm-shared.h | 27 + 24 files changed, 3230 insertions(+), 180 deletions(-) create mode 100644 Documentation/devicetree/bindings/leds/rohm,leds-bd71828.yaml create mode 100644 Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml create mode 100644 Documentation/devicetree/bindings/regulator/rohm,bd71828-regulator.yaml create mode 100644 drivers/gpio/gpio-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 =]
