summaryrefslogtreecommitdiffstats
path: root/drivers/mfd/atmel-flexcom.c (follow)
Commit message (Collapse)AuthorAgeFilesLines
* atmel_flexcom: Support resuming after a chip resetRomain Izard2018-01-081-15/+48
| | | | | | | | | | | | | | 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 <romain.izard.pro@gmail.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Tested-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: atmel: Use devm_of_platform_populate()Benjamin Gaignard2017-07-061-1/+1
| | | | | | | | Use devm_of_platform_populate() to be sure that of_platform_depopulate is called when removing the driver. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
* mfd: atmel-flexcom: Add a driver for Atmel Flexible Serial Communication UnitCyrille Pitchen2015-10-301-0/+104
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 <cyrille.pitchen@atmel.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>