doc: efm32: fix doxygen warnings

Mind you, this doesn't actually fix that most of these are _missing_
that is a subsequent commit

lib/efm32/common/adc_common.c

@@ -633,6 +633,7 @@ uint32_t adc_scan_data_peak(uint32_t adc)
 /**
  * Set ADC scan gain calibration
  * @param[in] adc ADC (use ADCx)
+ * @param scan_gain calibration of gain for internal ref
  */
 void adc_set_calibration_scan_gain(uint32_t adc, uint8_t scan_gain)
 {
@@ -642,6 +643,7 @@ void adc_set_calibration_scan_gain(uint32_t adc, uint8_t scan_gain)
 /**
  * Set ADC scan offset calibration
  * @param[in] adc ADC (use ADCx)
+ * @param scan_offset calibration of offset for internal ref
  */
 void adc_set_calibration_scan_offset(uint32_t adc, uint8_t scan_offset)
 {
@@ -651,6 +653,7 @@ void adc_set_calibration_scan_offset(uint32_t adc, uint8_t scan_offset)
 /**
  * Set ADC single gain calibration
  * @param[in] adc ADC (use ADCx)
+ * @param single_gain calibration of gain for internal ref
  */
 void adc_set_calibration_single_gain(uint32_t adc, uint8_t single_gain)
 {
@@ -660,6 +663,7 @@ void adc_set_calibration_single_gain(uint32_t adc, uint8_t single_gain)
 /**
  * Set ADC single offset calibration
  * @param[in] adc ADC (use ADCx)
+ * @param single_offset calibration of offset for internal ref
  */
 void adc_set_calibration_single_offset(uint32_t adc, uint8_t single_offset)
 {

lib/efm32/common/cmu_common.c

@@ -54,7 +54,7 @@ bool cmu_get_lock_flag(void)
  *
  * Enable the clock on particular peripheral.
  *
- * @param[in] periph enum cmu_periph_clken Peripheral Name
+ * @param[in] clken Peripheral Name
  *
  * For available constants, see @a enum::cmu_periph_clken (CMU_LEUART1 for
  * example)
@@ -69,7 +69,7 @@ void cmu_periph_clock_enable(enum cmu_periph_clken clken)
  * @brief Disable Peripheral Clock in running mode.
  * Disable the clock on particular peripheral.
  *
- * @param[in] periph enum cmu_periph_clken Peripheral Name
+ * @param[in] clken Peripheral Name
  *
  * For available constants, see @a enum::cmu_periph_clken (CMU_LEUART1 for
  * example)

lib/efm32/common/dac_common.c

@@ -95,8 +95,8 @@ void dac_disable_sine(uint32_t dac)
 /**
  * Set PRS trigger source on DAC channel
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
- * @param[in] prs_ch PRS Channel (use PRS_CHx)
+ * @param[in] dac_chan DAC Channel (use DAC_CHx)
+ * @param[in] prs_chan PRS Channel (use PRS_CHx)
  */
 void dac_set_prs_trigger(uint32_t dac, enum dac_ch dac_chan,
 			 enum prs_ch prs_chan)
@@ -110,7 +110,7 @@ void dac_set_prs_trigger(uint32_t dac, enum dac_ch dac_chan,
 /**
  * Enable PRS triggerring
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_enable_prs_trigger(uint32_t dac, enum dac_ch ch)
 {
@@ -120,7 +120,7 @@ void dac_enable_prs_trigger(uint32_t dac, enum dac_ch ch)
 /**
  * Disable PRS triggerring
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_disable_prs_trigger(uint32_t dac, enum dac_ch ch)
 {
@@ -130,7 +130,7 @@ void dac_disable_prs_trigger(uint32_t dac, enum dac_ch ch)
 /**
  * Enable auto refresh
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_enable_auto_refresh(uint32_t dac, enum dac_ch ch)
 {
@@ -140,7 +140,7 @@ void dac_enable_auto_refresh(uint32_t dac, enum dac_ch ch)
 /**
  * Disable auto refresh
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_disable_auto_refresh(uint32_t dac, enum dac_ch ch)
 {
@@ -150,7 +150,7 @@ void dac_disable_auto_refresh(uint32_t dac, enum dac_ch ch)
 /**
  * Enable channel
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_enable_channel(uint32_t dac, enum dac_ch ch)
 {
@@ -160,7 +160,7 @@ void dac_enable_channel(uint32_t dac, enum dac_ch ch)
 /**
  * Disable channel
  * @param[in] dac DAC (use DACx)
- * @param[in] dac_ch DAC Channel (use DAC_CHx)
+ * @param[in] ch DAC Channel (use DAC_CHx)
  */
 void dac_disable_channel(uint32_t dac, enum dac_ch ch)
 {

lib/efm32/common/dma_common.c

@@ -563,8 +563,8 @@ static inline uint32_t dma_calc_end_from_start(uint32_t start, uint8_t inc,
  *            descriptor
  * @param[in] ch Channel (use DMA_CHx)
  * @param[in] src_start Source data start address
- * @param[in] this function use dma_desc_set_count() and dma_desc_set_src_inc()
- *            set value to calculate the src data end address from @a src_start
+ * this function uses @ref dma_calc_end_from_start to calculate the
+ * src data end address from @a src_start
  * @note dma_desc_set_count() should be called first.
  * @note dma_desc_set_src_inc() should be called first.
  */
@@ -586,9 +586,8 @@ void dma_desc_set_src_address(uint32_t desc_base, enum dma_ch ch,
  *            descriptor
  * @param[in] ch Channel (use DMA_CHx)
  * @param[in] dest_start Destination data start address
- * @param[in] this function use dma_desc_set_count() and
- *            dma_desc_set_dest_inc() set value to calculate the dest data end
- *            address from @a dest_start
+ * this function uses @ref dma_calc_end_from_start to calculate the
+ * dest data end address from @a dest_start
  * @note dma_desc_set_count() should be called first.
  * @note dma_desc_set_dest_inc() should be called first.
  */