diff options
| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2018-11-12 14:03:58 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-11-20 12:35:25 -0500 |
| commit | 63f004e7aae17a6b6048c88ce7e39d64e58c08c1 (patch) | |
| tree | d24d457dd1dfedb302da045a978782508556dcc1 /test | |
| parent | d73d81fd85e4a030ade42c4b2d13466d45090aa3 (diff) | |
| download | u-boot-63f004e7aae17a6b6048c88ce7e39d64e58c08c1.tar.gz u-boot-63f004e7aae17a6b6048c88ce7e39d64e58c08c1.tar.xz u-boot-63f004e7aae17a6b6048c88ce7e39d64e58c08c1.zip | |
dm: adc: add uclass's mask and conversion helpers
Add two functions to ADC uclass's:
- adc_raw_to_uV() to ease ADC raw value conversion to microvolts
- adc_channel_mask() to get channels on consumer side
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test')
| -rw-r--r-- | test/dm/adc.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/test/dm/adc.c b/test/dm/adc.c index 13eda3bd23..1f82304f41 100644 --- a/test/dm/adc.c +++ b/test/dm/adc.c @@ -22,10 +22,14 @@ static int dm_test_adc_bind(struct unit_test_state *uts) { struct udevice *dev; + unsigned int channel_mask; ut_assertok(uclass_get_device_by_name(UCLASS_ADC, "adc", &dev)); ut_asserteq_str(SANDBOX_ADC_DEVNAME, dev->name); + ut_assertok(adc_channel_mask(dev, &channel_mask)); + ut_asserteq((1 << SANDBOX_ADC_CHANNELS) - 1, channel_mask); + return 0; } DM_TEST(dm_test_adc_bind, DM_TESTF_SCAN_FDT); @@ -160,3 +164,34 @@ static int dm_test_adc_multi_channel_shot(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_adc_multi_channel_shot, DM_TESTF_SCAN_FDT); + +static const int dm_test_adc_uV_data[SANDBOX_ADC_CHANNELS] = { + ((u64)SANDBOX_ADC_CHANNEL0_DATA * SANDBOX_BUCK2_INITIAL_EXPECTED_UV) / + SANDBOX_ADC_DATA_MASK, + ((u64)SANDBOX_ADC_CHANNEL1_DATA * SANDBOX_BUCK2_INITIAL_EXPECTED_UV) / + SANDBOX_ADC_DATA_MASK, + ((u64)SANDBOX_ADC_CHANNEL2_DATA * SANDBOX_BUCK2_INITIAL_EXPECTED_UV) / + SANDBOX_ADC_DATA_MASK, + ((u64)SANDBOX_ADC_CHANNEL3_DATA * SANDBOX_BUCK2_INITIAL_EXPECTED_UV) / + SANDBOX_ADC_DATA_MASK, +}; + +static int dm_test_adc_raw_to_uV(struct unit_test_state *uts) +{ + struct adc_channel *tdata = adc_channel_test_data; + unsigned int i, data; + struct udevice *dev; + int uV; + + ut_assertok(uclass_get_device_by_name(UCLASS_ADC, "adc", &dev)); + /* Test each ADC channel's value in microvolts */ + for (i = 0; i < SANDBOX_ADC_CHANNELS; i++, tdata++) { + ut_assertok(adc_start_channel(dev, tdata->id)); + ut_assertok(adc_channel_data(dev, tdata->id, &data)); + ut_assertok(adc_raw_to_uV(dev, data, &uV)); + ut_asserteq(dm_test_adc_uV_data[i], uV); + } + + return 0; +} +DM_TEST(dm_test_adc_raw_to_uV, DM_TESTF_SCAN_FDT); |