diff options
Diffstat (limited to 'drivers/spi/spi-loopback-test.c')
| -rw-r--r-- | drivers/spi/spi-loopback-test.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/spi/spi-loopback-test.c b/drivers/spi/spi-loopback-test.c index 3459965004f8..bed7403bb6b3 100644 --- a/drivers/spi/spi-loopback-test.c +++ b/drivers/spi/spi-loopback-test.c @@ -32,39 +32,50 @@ #include "spi-test.h" /* flag to only simulate transfers */ -int simulate_only; +static int simulate_only; module_param(simulate_only, int, 0); MODULE_PARM_DESC(simulate_only, "if not 0 do not execute the spi message"); /* dump spi messages */ -int dump_messages; +static int dump_messages; module_param(dump_messages, int, 0); MODULE_PARM_DESC(dump_messages, "=1 dump the basic spi_message_structure, " \ "=2 dump the spi_message_structure including data, " \ "=3 dump the spi_message structure before and after execution"); /* the device is jumpered for loopback - enabling some rx_buf tests */ -int loopback; +static int loopback; module_param(loopback, int, 0); MODULE_PARM_DESC(loopback, "if set enable loopback mode, where the rx_buf " \ "is checked to match tx_buf after the spi_message " \ "is executed"); +static 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"); + +static int no_cs; +module_param(no_cs, int, 0); +MODULE_PARM_DESC(no_cs, + "if set Chip Select (CS) will not be used"); + /* run only a specific test */ -int run_only_test = -1; +static int run_only_test = -1; module_param(run_only_test, int, 0); MODULE_PARM_DESC(run_only_test, "only run the test with this number (0-based !)"); /* use vmalloc'ed buffers */ -int use_vmalloc; +static int use_vmalloc; module_param(use_vmalloc, int, 0644); MODULE_PARM_DESC(use_vmalloc, "use vmalloc'ed buffers instead of kmalloc'ed"); /* check rx ranges */ -int check_ranges = 1; +static int check_ranges = 1; module_param(check_ranges, int, 0644); MODULE_PARM_DESC(check_ranges, "checks rx_buffer pattern are valid"); @@ -313,6 +324,17 @@ static int spi_loopback_test_probe(struct spi_device *spi) { int ret; + if (loop_req || no_cs) { + spi->mode |= loop_req ? SPI_LOOP : 0; + spi->mode |= no_cs ? SPI_NO_CS : 0; + ret = spi_setup(spi); + if (ret) { + dev_err(&spi->dev, "SPI setup with SPI_LOOP or SPI_NO_CS failed (%d)\n", + ret); + return ret; + } + } + dev_info(&spi->dev, "Executing spi-loopback-tests\n"); ret = spi_test_run_tests(spi, spi_tests); |