tree 78e57380c0e68d535b05fc5d5548db986b6e608e
parent bfa76d49576599a4b9f9b7a71f23d73d6dcff735
author Guenter Roeck <linux@roeck-us.net> 1423254474 -0800
committer Mark Brown <broonie@kernel.org> 1423633349 +0800

spi: sc18is602: Support multiple devices on a single I2C bus if DT is configured

The driver currently only supports a single device per I2C bus since it uses
the I2C bus number to set the SPI bus number. This makes it impossible to
connect more than one chip to a single I2C bus.

We don't want to use dynamic bus numbers unconditionally since this would
result in every instantiation getting a different bus number starting with
65,535 counting down unless devicetree is configured. If devicetree is
configured, however, the SPI bus number is obtained from devicetree
data. So we can use dynamic SPI bus numbers in this case.

Reported-and-Tested-by: Marco Menchise <marco.menchise@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@kernel.org>