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

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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>
This commit is contained in:
Andreas Larsson
2013-02-15 16:52:21 +01:00
committed by Grant Likely
parent 58ad60bbb2
commit e8beacbb85
9 changed files with 520 additions and 405 deletions
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6
drivers/spi/spi-fsl-lib.h
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@@ -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 {