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* mfd: khadas-mcu: Convert to use maple tree register cacheBo Liu2024-02-231-1/+1
| | | | | | | | | | | The maple tree register cache is based on a much more modern data structure than the rbtree cache and makes optimisation choices which are probably more appropriate for modern systems than those made by the rbtree cache. Signed-off-by: Bo Liu <liubo03@inspur.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20240206071314.8721-9-liubo03@inspur.com Signed-off-by: Lee Jones <lee@kernel.org>
* mfd: Switch i2c drivers back to use .probe()Uwe Kleine-König2023-06-151-1/+1
| | | | | | | | | | | | After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back type"), all drivers being converted to .probe_new() and then 03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert back to (the new) .probe() to be able to eventually drop .probe_new() from struct i2c_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230515182752.10050-1-u.kleine-koenig@pengutronix.de Signed-off-by: Lee Jones <lee@kernel.org>
* mfd: various: Use of_property_present() for testing DT property presenceRob Herring2023-04-261-1/+1
| | | | | | | | | | | | | It is preferred to use typed property access functions (i.e. of_property_read_<type> functions) rather than low-level of_get_property/of_find_property functions for reading properties. As part of this, convert of_get_property/of_find_property calls to the recently added of_property_present() helper when we just want to test for presence of a property and nothing more. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20230310144712.1543379-1-robh@kernel.org
* mfd: khadas-mcu: Convert to i2c's .probe_new()Uwe Kleine-König2022-12-071-3/+2
| | | | | | | | | | The probe function doesn't make use of the i2c_device_id * parameter so it can be trivially converted. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Lee Jones <lee@kernel.org> Link: https://lore.kernel.org/r/20221118224540.619276-432-uwe@kleine-koenig.org
* mfd: khadas-mcu: Fix randconfig 'unused-const-variable' warningLee Jones2020-09-301-0/+2
| | | | | | | | | | | When testing with !OF, the build system reports: >> drivers/mfd/khadas-mcu.c:125:34: warning: unused variable 'khadas_mcu_of_match' [-Wunused-const-variable] static const struct of_device_id khadas_mcu_of_match[] = { ^ Reported-by: kernel test robot <lkp@intel.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: Add support for the Khadas System control MicrocontrollerNeil Armstrong2020-06-181-0/+142
This Microcontroller is present on the Khadas VIM1, VIM2, VIM3 and Edge boards. It has multiple boot control features like password check, power-on options, power-off control and system FAN control on recent boards. This implements a very basic MFD driver with the fan control and User NVMEM cells. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>