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>
diff --git a/drivers/spi/spi-fsl-lib.c b/drivers/spi/spi-fsl-lib.c
index 8ade675..a91db0e 100644
--- a/drivers/spi/spi-fsl-lib.c
+++ b/drivers/spi/spi-fsl-lib.c
@@ -23,7 +23,9 @@
#include <linux/mm.h>
#include <linux/of_platform.h>
#include <linux/spi/spi.h>
+#ifdef CONFIG_FSL_SOC
#include <sysdev/fsl_soc.h>
+#endif
#include "spi-fsl-lib.h"
@@ -208,6 +210,7 @@
/* Allocate bus num dynamically. */
pdata->bus_num = -1;
+#ifdef CONFIG_FSL_SOC
/* SPI controller is either clocked from QE or SoC clock. */
pdata->sysclk = get_brgfreq();
if (pdata->sysclk == -1) {
@@ -217,6 +220,11 @@
goto err;
}
}
+#else
+ ret = of_property_read_u32(np, "clock-frequency", &pdata->sysclk);
+ if (ret)
+ goto err;
+#endif
prop = of_get_property(np, "mode", NULL);
if (prop && !strcmp(prop, "cpu-qe"))
