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authorSimon Glass <sjg@chromium.org>2014-10-13 23:41:56 -0600
committerSimon Glass <sjg@chromium.org>2014-10-22 10:36:47 -0600
commit1157a161b0a579c7021a10384b7042a75b0cb229 (patch)
treee3bf3cd301a4389d7b821f8d82e9ae2d8b27cde2 /common/cmd_spi.c
parent843c9e8796a7a6ebe0c9dec54c6a64ac29949d8f (diff)
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dm: spi: Adjust cmd_spi to work with driver model
Driver model uses a different way to find the SPI bus and slave from the numbered devices given on the command line. Adjust the code to suit. We use a generic SPI device, and attach it to the SPI bus before performing the transaction. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'common/cmd_spi.c')
-rw-r--r--common/cmd_spi.c39
1 files changed, 31 insertions, 8 deletions
diff --git a/common/cmd_spi.c b/common/cmd_spi.c
index be5709c..64c3ffc 100644
--- a/common/cmd_spi.c
+++ b/common/cmd_spi.c
@@ -11,6 +11,7 @@
#include <common.h>
#include <command.h>
+#include <dm.h>
#include <errno.h>
#include <spi.h>
@@ -42,19 +43,38 @@ static uchar din[MAX_SPI_BYTES];
static int do_spi_xfer(int bus, int cs)
{
struct spi_slave *slave;
- int rcode = 0;
-
+ int ret = 0;
+
+#ifdef CONFIG_DM_SPI
+ char name[30], *str;
+ struct udevice *dev;
+
+ snprintf(name, sizeof(name), "generic_%d:%d", bus, cs);
+ str = strdup(name);
+ ret = spi_get_bus_and_cs(bus, cs, 1000000, mode, "spi_generic_drv",
+ str, &dev, &slave);
+ if (ret)
+ return ret;
+#else
slave = spi_setup_slave(bus, cs, 1000000, mode);
if (!slave) {
printf("Invalid device %d:%d\n", bus, cs);
return -EINVAL;
}
+#endif
- spi_claim_bus(slave);
- if (spi_xfer(slave, bitlen, dout, din,
- SPI_XFER_BEGIN | SPI_XFER_END) != 0) {
- printf("Error during SPI transaction\n");
- rcode = -EIO;
+ ret = spi_claim_bus(slave);
+ if (ret)
+ goto done;
+ ret = spi_xfer(slave, bitlen, dout, din,
+ SPI_XFER_BEGIN | SPI_XFER_END);
+#ifndef CONFIG_DM_SPI
+ /* We don't get an error code in this case */
+ if (ret)
+ ret = -EIO;
+#endif
+ if (ret) {
+ printf("Error %d during SPI transaction\n", ret);
} else {
int j;
@@ -62,10 +82,13 @@ static int do_spi_xfer(int bus, int cs)
printf("%02X", din[j]);
printf("\n");
}
+done:
spi_release_bus(slave);
+#ifndef CONFIG_DM_SPI
spi_free_slave(slave);
+#endif
- return rcode;
+ return ret;
}
/*