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, 4 insertions, 2 deletions

diff --git a/drivers/spi/spi-fsl-lib.h b/drivers/spi/spi-fsl-lib.h
index cbe881b9ea76..d785595c206e 100644
--- a/drivers/spi/spi-fsl-lib.h
+++ b/drivers/spi/spi-fsl-lib.h
@@ -34,8 +34,10 @@ struct mpc8xxx_spi {
 
         int subblock;
         struct spi_pram __iomem *pram;
+#ifdef CONFIG_FSL_SOC
         struct cpm_buf_desc __iomem *tx_bd;
         struct cpm_buf_desc __iomem *rx_bd;
+#endif
 
         struct spi_transfer *xfer_in_progress;
 
@@ -87,12 +89,12 @@ struct spi_mpc8xxx_cs {
 
 static inline void mpc8xxx_spi_write_reg(__be32 __iomem *reg, u32 val)
 {
-        out_be32(reg, val);
+        iowrite32be(val, reg);
 }
 
 static inline u32 mpc8xxx_spi_read_reg(__be32 __iomem *reg)
 {
-        return in_be32(reg);
+        return ioread32be(reg);
 }
 
 struct mpc8xxx_spi_probe_info {