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authorSimon Glass <sjg@chromium.org>2014-10-13 23:42:10 -0600
committerSimon Glass <sjg@chromium.org>2014-10-22 10:36:51 -0600
commitebcab48a031fc96d5d6292564a35cf772d4e539c (patch)
tree17c5d710dd35a4317af5617b9208737fb2e5d96e /test/dm/spi.c
parent465bc03b0c5861864fa082c0f79fc9295a9e2cb9 (diff)
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dm: spi: Add tests
These tests use SPI flash (and the sandbox emulation) to operate. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'test/dm/spi.c')
-rw-r--r--test/dm/spi.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/test/dm/spi.c b/test/dm/spi.c
new file mode 100644
index 0000000..61b5b25
--- /dev/null
+++ b/test/dm/spi.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <spi.h>
+#include <spi_flash.h>
+#include <dm/device-internal.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <dm/ut.h>
+#include <dm/util.h>
+#include <asm/state.h>
+
+/* Test that we can find buses and chip-selects */
+static int dm_test_spi_find(struct dm_test_state *dms)
+{
+ struct sandbox_state *state = state_get_current();
+ struct spi_slave *slave;
+ struct udevice *bus, *dev;
+ const int busnum = 0, cs = 0, mode = 0, speed = 1000000, cs_b = 1;
+ struct spi_cs_info info;
+ int of_offset;
+
+ ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_SPI, busnum,
+ false, &bus));
+
+ /*
+ * spi_post_bind() will bind devices to chip selects. Check this then
+ * remove the emulation and the slave device.
+ */
+ ut_asserteq(0, uclass_get_device_by_seq(UCLASS_SPI, busnum, &bus));
+ ut_assertok(spi_cs_info(bus, cs, &info));
+ of_offset = info.dev->of_offset;
+ sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
+ device_remove(info.dev);
+ device_unbind(info.dev);
+
+ /*
+ * Even though the device is gone, the sandbox SPI drivers always
+ * reports that CS 0 is present
+ */
+ ut_assertok(spi_cs_info(bus, cs, &info));
+ ut_asserteq_ptr(info.dev, NULL);
+
+ /* This finds nothing because we removed the device */
+ ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev));
+ ut_asserteq(-ENODEV, spi_get_bus_and_cs(busnum, cs, speed, mode,
+ NULL, 0, &bus, &slave));
+
+ /*
+ * This forces the device to be re-added, but there is no emulation
+ * connected so the probe will fail. We require that bus is left
+ * alone on failure, and that the spi_get_bus_and_cs() does not add
+ * a 'partially-inited' device.
+ */
+ ut_asserteq(-ENODEV, spi_find_bus_and_cs(busnum, cs, &bus, &dev));
+ ut_asserteq(-ENOENT, spi_get_bus_and_cs(busnum, cs, speed, mode,
+ "spi_flash_std", "name", &bus,
+ &slave));
+ ut_assertok(spi_cs_info(bus, cs, &info));
+ ut_asserteq_ptr(info.dev, NULL);
+
+ /* Add the emulation and try again */
+ ut_assertok(sandbox_sf_bind_emul(state, busnum, cs, bus, of_offset,
+ "name"));
+ ut_assertok(spi_find_bus_and_cs(busnum, cs, &bus, &dev));
+ ut_assertok(spi_get_bus_and_cs(busnum, cs, speed, mode,
+ "spi_flash_std", "name", &bus, &slave));
+
+ ut_assertok(spi_cs_info(bus, cs, &info));
+ ut_asserteq_ptr(info.dev, slave->dev);
+
+ /* We should be able to add something to another chip select */
+ ut_assertok(sandbox_sf_bind_emul(state, busnum, cs_b, bus, of_offset,
+ "name"));
+ ut_assertok(spi_get_bus_and_cs(busnum, cs_b, speed, mode,
+ "spi_flash_std", "name", &bus, &slave));
+ ut_assertok(spi_cs_info(bus, cs_b, &info));
+ ut_asserteq_ptr(info.dev, slave->dev);
+
+ /*
+ * Since we are about to destroy all devices, we must tell sandbox
+ * to forget the emulation device
+ */
+ sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
+ sandbox_sf_unbind_emul(state_get_current(), busnum, cs_b);
+
+ return 0;
+}
+DM_TEST(dm_test_spi_find, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test that sandbox SPI works correctly */
+static int dm_test_spi_xfer(struct dm_test_state *dms)
+{
+ struct spi_slave *slave;
+ struct udevice *bus;
+ const int busnum = 0, cs = 0, mode = 0;
+ const char dout[5] = {0x9f};
+ unsigned char din[5];
+
+ ut_assertok(spi_get_bus_and_cs(busnum, cs, 1000000, mode, NULL, 0,
+ &bus, &slave));
+ ut_assertok(spi_claim_bus(slave));
+ ut_assertok(spi_xfer(slave, 40, dout, din,
+ SPI_XFER_BEGIN | SPI_XFER_END));
+ ut_asserteq(0xff, din[0]);
+ ut_asserteq(0x20, din[1]);
+ ut_asserteq(0x20, din[2]);
+ ut_asserteq(0x15, din[3]);
+ spi_release_bus(slave);
+
+ /*
+ * Since we are about to destroy all devices, we must tell sandbox
+ * to forget the emulation device
+ */
+#ifdef CONFIG_DM_SPI_FLASH
+ sandbox_sf_unbind_emul(state_get_current(), busnum, cs);
+#endif
+
+ return 0;
+}
+DM_TEST(dm_test_spi_xfer, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);