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Diffstat (limited to 'drivers/spi/spi-loopback-test.c')
| -rw-r--r-- | drivers/spi/spi-loopback-test.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/spi/spi-loopback-test.c b/drivers/spi/spi-loopback-test.c index 3459965004f8..0d3c56e2526c 100644 --- a/drivers/spi/spi-loopback-test.c +++ b/drivers/spi/spi-loopback-test.c @@ -51,6 +51,12 @@ MODULE_PARM_DESC(loopback, "is checked to match tx_buf after the spi_message " \ "is executed"); +int loop_req; +module_param(loop_req, int, 0); +MODULE_PARM_DESC(loop_req, + "if set controller will be asked to enable test loop mode. " \ + "If controller supported it, MISO and MOSI will be connected"); + /* run only a specific test */ int run_only_test = -1; module_param(run_only_test, int, 0); @@ -313,6 +319,16 @@ static int spi_loopback_test_probe(struct spi_device *spi) { int ret; + if (loop_req) { + spi->mode = SPI_LOOP | spi->mode; + ret = spi_setup(spi); + if (ret) { + dev_err(&spi->dev, "SPI setup with SPI_LOOP failed (%d)\n", + ret); + return ret; + } + } + dev_info(&spi->dev, "Executing spi-loopback-tests\n"); ret = spi_test_run_tests(spi, spi_tests); |