spi/spi-fsl-spi: Make driver usable in CPU mode outside of an FSL_SOC environment

This makes the spi-fsl-spi driver usable in CPU mode outside of an FSL_SOC and
even an powerpc environment by moving CPM mode functionality to a separate file
that is only compiled and linked in an FSL_SOC environment and adding some
ifdefs to hide types and functions or provide alternatives.

For devicetree probing a "clock-frequency" property is used for clock frequency
instead of calls to FSL_SOC-specific functions.

Acked-by: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 32b85d43bbe2..3524bec5ae5b 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -229,12 +229,17 @@ config SPI_MPC512x_PSC
 
 config SPI_FSL_LIB
         tristate
+        depends on OF
+
+config SPI_FSL_CPM
+        tristate
         depends on FSL_SOC
 
 config SPI_FSL_SPI
         bool "Freescale SPI controller"
-        depends on FSL_SOC
+        depends on OF
         select SPI_FSL_LIB
+        select SPI_FSL_CPM if FSL_SOC
         help
           This enables using the Freescale SPI controllers in master mode.
           MPC83xx platform uses the controller in cpu mode or CPM/QE mode.