kernel/drivers/mfd/atmel-flexcom.c, branch linux-5.1.y

atmel_flexcom: Support resuming after a chip reset

2018-01-08T11:03:35Z

The controller used by a flexcom module is configured at boot, and left alone after this. In the suspend mode called "backup with self-refresh" available on SAMA5D2, the chip will resume with most of its registers reset. In this case, we need to restore the state of the flexcom driver on resume. Signed-off-by: Romain Izard Acked-by: Alexandre Belloni Acked-by: Nicolas Ferre Tested-by: Nicolas Ferre Signed-off-by: Lee Jones

mfd: atmel: Use devm_of_platform_populate()

2017-07-06T07:29:12Z

Use devm_of_platform_populate() to be sure that of_platform_depopulate is called when removing the driver. Signed-off-by: Benjamin Gaignard Signed-off-by: Lee Jones

mfd: atmel-flexcom: Add a driver for Atmel Flexible Serial Communication Unit

2015-10-30T17:19:49Z

This driver supports the new Atmel Flexcom. The Flexcom is a wrapper which integrates one SPI controller, one I2C controller and one USART. Only one function can be enabled at a time. This driver selects the function once for all, when the Flexcom is probed, according to the value of the new "atmel,flexcom-mode" device tree property. This driver has chosen to present the Flexcom to the system as a MFD so the implementation is seamless for the existing Atmel SPI, I2C and USART drivers. Also the Flexcom embeds FIFOs: the latest patches of the SPI, I2C and USART drivers take advantage of this new feature. Signed-off-by: Cyrille Pitchen Acked-by: Boris Brezillon Acked-by: Alexandre Belloni Acked-by: Nicolas Ferre Signed-off-by: Lee Jones