diff options
| author | Simon Glass <sjg@chromium.org> | 2018-12-10 10:37:34 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-12-13 16:32:49 -0700 |
| commit | e96fa6c91177d0aa81119d1d24cc0aa2dd663581 (patch) | |
| tree | 333d54a1f9349c5e238f836675d49dbe5b59bc4b /test/dm/i2s.c | |
| parent | ce6d99a056ebc9ad329521ca3660f6cb298a7666 (diff) | |
dm: sound: Create a uclass for i2s
The i2s bus is commonly used with audio codecs. It provides a way to
stream digital data sychronously in both directions. U-Boot only supports
audio output, so this uclass is very simple, with a single tx_data()
method.
Add a uclass and a test for i2s.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test/dm/i2s.c')
| -rw-r--r-- | test/dm/i2s.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/dm/i2s.c b/test/dm/i2s.c new file mode 100644 index 0000000000..49ebc3523c --- /dev/null +++ b/test/dm/i2s.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2018 Google LLC + * Written by Simon Glass <sjg@chromium.org> + */ + +#include <common.h> +#include <dm.h> +#include <i2s.h> +#include <dm/test.h> +#include <test/ut.h> +#include <asm/test.h> + +/* Basic test of the i2s codec uclass */ +static int dm_test_i2s(struct unit_test_state *uts) +{ + struct udevice *dev; + u8 data[3]; + + /* check probe success */ + ut_assertok(uclass_first_device_err(UCLASS_I2S, &dev)); + data[0] = 1; + data[1] = 4; + data[2] = 6; + ut_assertok(i2s_tx_data(dev, data, ARRAY_SIZE(data))); + ut_asserteq(11, sandbox_get_i2s_sum(dev)); + ut_assertok(i2s_tx_data(dev, data, 1)); + ut_asserteq(12, sandbox_get_i2s_sum(dev)); + + return 0; +} +DM_TEST(dm_test_i2s, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |