drivers/spi/spi-loopback-test.c

37 /* the device is jumpered for loopback - enabling some rx_buf tests */
41 		 "if set enable loopback mode, where the rx_buf "	\
97 				.rx_buf = RX(0),
111 				.rx_buf = RX(PAGE_SIZE - 4),
135 				.rx_buf = RX(0),
202 				.rx_buf = RX(0),
219 				.rx_buf = RX(0),
236 				.rx_buf = RX(0),
250 				.rx_buf = RX(0),
257 				.rx_buf = RX(SPI_TEST_MAX_SIZE_HALF),
272 				.rx_buf = RX(1024),
278 				.rx_buf = RX(0),
293 				.rx_buf = RX(0),
298 				.rx_buf = RX(1024),
311 				.rx_buf = RX(0),
319 				.rx_buf = RX(0),
341 				.rx_buf = RX(0),
345 				.rx_buf = RX(1),
350 				.rx_buf = RX(513),
467 		dev_info(&spi->dev, "      rx_buf: %pK\n", xfer->rx_buf);
468 		if (dump_data && xfer->rx_buf)
470 						xfer->rx_buf,
472 		/* check for unwritten test pattern on rx_buf */
473 		if (xfer->rx_buf) {
475 				b = ((u8 *)xfer->rx_buf)[xfer->len - 1 - i];
481 					 "      rx_buf filled with %02x starts at offset: %i\n",
521 		if (!xfer->rx_buf)
524 		if (RANGE_CHECK(xfer->rx_buf, xfer->len,
526 			ranges[i].start = xfer->rx_buf;
527 			ranges[i].end = xfer->rx_buf + xfer->len;
622 	/* if applicable to transfer check that rx_buf is equal to tx_buf */
625 		if (!xfer->len || !xfer->rx_buf)
631 				rxb = ((u8 *)xfer->rx_buf)[i];
637 			txb = ((u8 *)xfer->rx_buf)[0];
647 				rxb = ((u8 *)xfer->rx_buf)[i];
725 		/* fill rx_buf with SPI_TEST_PATTERN_UNWRITTEN */
726 		if (xfers[i].rx_buf)
727 			memset(xfers[i].rx_buf, SPI_TEST_PATTERN_UNWRITTEN,
815 		/* patch the values of rx_buf */
816 		ret = spi_test_translate(spi, &x->rx_buf, x->len,
873 	/* count number of transfers with tx/rx_buf != NULL */
878 		if (test.transfers[i].rx_buf)
893 			      "%s: iterate_rx_off configured with rx_buf==NULL - ignoring\n",
915 		if (test.transfers[i].rx_buf)
916 			test.transfers[i].rx_buf += rx_off;