Am 2021-11-05 12:38, schrieb Robert Marko:
Delta TN48M switches have a Lattice CPLD that serves multiple purposes including being a GPIO expander. So, lets use the simple I2C MFD driver to provide the MFD core. Also add a virtual symbol which pulls in the simple-mfd-i2c driver and provide a common symbol on which the subdevice drivers can depend on. Signed-off-by: Robert Marko <robert.marko@xxxxxxxxxx> Acked-for-MFD-by: Lee Jones <lee.jones@xxxxxxxxxx> --- Changes in v2: * Drop the custom MFD driver and header * Use simple I2C MFD driver --- drivers/mfd/Kconfig | 10 ++++++++++ drivers/mfd/simple-mfd-i2c.c | 1 + 2 files changed, 11 insertions(+) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index ad15be6b86bc..3701657e831d 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -297,6 +297,16 @@ config MFD_ASIC3 This driver supports the ASIC3 multifunction chip found on many PDAs (mainly iPAQ and HTC based ones) +config MFD_TN48M_CPLD + tristate "Delta Networks TN48M switch CPLD driver" + depends on I2C + select MFD_SIMPLE_MFD_I2C
Is this device used on multiple architectures? See commit de1292817cf73 (mfd: MFD_SL28CPLD should depend on ARCH_LAYERSCAPE). -michael
