summaryrefslogtreecommitdiff
path: root/Documentation/spi
diff options
context:
space:
mode:
authorAdrian Remonda <adrianremonda@gmail.com>2015-03-10 23:12:31 +0300
committerMark Brown <broonie@kernel.org>2015-03-10 23:51:04 +0300
commit31a5c5a72b90e074bd2377ada2bdfd506801ed72 (patch)
treeca0cd55dcab42f033edd254d186d21b04af0c4fd /Documentation/spi
parentb78ce7ed54093e5e63d4f5d7cbdc3f7d42ebbd5c (diff)
downloadlinux-31a5c5a72b90e074bd2377ada2bdfd506801ed72.tar.xz
spi: spidev_test: Added verbose output
Signed-off-by: Adrian Remonda <adrianremonda@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/spi')
-rw-r--r--Documentation/spi/spidev_test.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/spi/spidev_test.c b/Documentation/spi/spidev_test.c
index 9cb09184a3d6..4b6a3803638b 100644
--- a/Documentation/spi/spidev_test.c
+++ b/Documentation/spi/spidev_test.c
@@ -35,6 +35,7 @@ static uint32_t mode;
static uint8_t bits = 8;
static uint32_t speed = 500000;
static uint16_t delay;
+static int verbose;
static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix)
{
@@ -104,6 +105,8 @@ static void transfer(int fd)
if (ret < 1)
pabort("can't send spi message");
+ if (verbose)
+ hex_dump(tx, ARRAY_SIZE(tx), 32, "TX");
hex_dump(rx, ARRAY_SIZE(rx), 32, "RX");
}
@@ -120,6 +123,7 @@ static void print_usage(const char *prog)
" -L --lsb least significant bit first\n"
" -C --cs-high chip select active high\n"
" -3 --3wire SI/SO signals shared\n"
+ " -v --verbose Verbose (show tx buffer)\n"
" -N --no-cs no chip select\n"
" -R --ready slave pulls low to pause\n"
" -2 --dual dual transfer\n"
@@ -144,12 +148,13 @@ static void parse_opts(int argc, char *argv[])
{ "no-cs", 0, 0, 'N' },
{ "ready", 0, 0, 'R' },
{ "dual", 0, 0, '2' },
+ { "verbose", 0, 0, 'v' },
{ "quad", 0, 0, '4' },
{ NULL, 0, 0, 0 },
};
int c;
- c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24", lopts, NULL);
+ c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24:v", lopts, NULL);
if (c == -1)
break;
@@ -188,6 +193,9 @@ static void parse_opts(int argc, char *argv[])
case 'N':
mode |= SPI_NO_CS;
break;
+ case 'v':
+ verbose = 1;
+ break;
case 'R':
mode |= SPI_READY;
break;