michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: adc: mcux_lpadc: support IP instances without side B channel

Browse source 
Updating the LPADC driver to support IP without a side B channel.
The MCXA156 is an example with this instantiation of the IP.

Signed-off-by: Neil Chen <cheng.chen_1@nxp.com>
This commit is contained in:
Neil Chen 2024-11-25 14:21:02 +08:00 • committed by Benjamin Cabé
commit 0436801cf9
1 changed files with 6 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/adc/adc_mcux_lpadc.c
View file

@ -157,6 +157,8 @@ static int mcux_lpadc_channel_setup(const struct device *dev,
return -EINVAL; return -EINVAL;
} }
#if !(defined(FSL_FEATURE_LPADC_HAS_B_SIDE_CHANNELS) && \
(FSL_FEATURE_LPADC_HAS_B_SIDE_CHANNELS == 0U))
if (channel_cfg->differential) { if (channel_cfg->differential) {
/* Channel pairs must match in differential mode */ /* Channel pairs must match in differential mode */
if ((ADC_CMDL_ADCH(channel_cfg->input_positive)) != if ((ADC_CMDL_ADCH(channel_cfg->input_positive)) !=
@ -183,6 +185,7 @@ static int mcux_lpadc_channel_setup(const struct device *dev,
} else { } else {
/* Default value for sampleChannelMode is SideA */ /* Default value for sampleChannelMode is SideA */
} }
#endif
#if defined(FSL_FEATURE_LPADC_HAS_CMDL_CSCALE) && FSL_FEATURE_LPADC_HAS_CMDL_CSCALE #if defined(FSL_FEATURE_LPADC_HAS_CMDL_CSCALE) && FSL_FEATURE_LPADC_HAS_CMDL_CSCALE
/* /*
* The true scaling factor used by the LPADC is 30/64, instead of * The true scaling factor used by the LPADC is 30/64, instead of
@ -435,6 +438,8 @@ static void mcux_lpadc_isr(const struct device *dev)
conv_mode = data->cmd_config[channel].sampleChannelMode; conv_mode = data->cmd_config[channel].sampleChannelMode;
if (data->ctx.sequence.resolution < 15) { if (data->ctx.sequence.resolution < 15) {
result = ((conv_result.convValue >> 3) & 0xFFF); result = ((conv_result.convValue >> 3) & 0xFFF);
#if !(defined(FSL_FEATURE_LPADC_HAS_B_SIDE_CHANNELS) && \
(FSL_FEATURE_LPADC_HAS_B_SIDE_CHANNELS == 0U))
#if defined(FSL_FEATURE_LPADC_HAS_CMDL_DIFF) && FSL_FEATURE_LPADC_HAS_CMDL_DIFF #if defined(FSL_FEATURE_LPADC_HAS_CMDL_DIFF) && FSL_FEATURE_LPADC_HAS_CMDL_DIFF
if (conv_mode == kLPADC_SampleChannelDiffBothSideAB || if (conv_mode == kLPADC_SampleChannelDiffBothSideAB ||
conv_mode == kLPADC_SampleChannelDiffBothSideBA) { conv_mode == kLPADC_SampleChannelDiffBothSideBA) {
@ -447,6 +452,7 @@ static void mcux_lpadc_isr(const struct device *dev)
} }
} }
*data->buffer++ = result; *data->buffer++ = result;
#endif
} else { } else {
*data->buffer++ = conv_result.convValue; *data->buffer++ = conv_result.convValue;
} }