struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
        struct sof_ipc4_audio_format *ipc4_fmt;
        struct sof_ipc4_copier *ipc4_copier;
-       bool single_fmt = false;
+       bool single_bitdepth = false;
        u32 valid_bits = 0;
        int dir, ret;
 
                                return 0;
 
                        if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
-                               if (sof_ipc4_copier_is_single_format(sdev,
+                               if (sof_ipc4_copier_is_single_bitdepth(sdev,
                                        available_fmt->output_pin_fmts,
                                        available_fmt->num_output_formats)) {
                                        ipc4_fmt = &available_fmt->output_pin_fmts->audio_fmt;
-                                       single_fmt = true;
+                                       single_bitdepth = true;
                                }
                        } else {
-                               if (sof_ipc4_copier_is_single_format(sdev,
+                               if (sof_ipc4_copier_is_single_bitdepth(sdev,
                                        available_fmt->input_pin_fmts,
                                        available_fmt->num_input_formats)) {
                                        ipc4_fmt = &available_fmt->input_pin_fmts->audio_fmt;
-                                       single_fmt = true;
+                                       single_bitdepth = true;
                                }
                        }
                }
        if (ret)
                return ret;
 
-       if (single_fmt) {
+       if (single_bitdepth) {
                snd_mask_none(fmt);
                valid_bits = SOF_IPC4_AUDIO_FORMAT_CFG_V_BIT_DEPTH(ipc4_fmt->fmt_cfg);
                dev_dbg(component->dev, "Set %s to %d bit format\n", dai->name, valid_bits);
 
 
 static int
 snd_sof_get_nhlt_endpoint_data(struct snd_sof_dev *sdev, struct snd_sof_dai *dai,
-                              bool single_format,
+                              bool single_bitdepth,
                               struct snd_pcm_hw_params *params, u32 dai_index,
                               u32 linktype, u8 dir, u32 **dst, u32 *len)
 {
                 * Look for 32-bit blob first instead of 16-bit if copier
                 * supports multiple formats
                 */
-               if (bit_depth == 16 && !single_format) {
+               if (bit_depth == 16 && !single_bitdepth) {
                        dev_dbg(sdev->dev, "Looking for 32-bit blob first for DMIC\n");
                        format_change = true;
                        bit_depth = 32;
                        bit_depth = params_width(params);
                        format_change = false;
                        get_new_blob = true;
-               } else if (linktype == SOF_DAI_INTEL_DMIC && !single_format) {
+               } else if (linktype == SOF_DAI_INTEL_DMIC && !single_bitdepth) {
                        /*
                         * The requested 32-bit blob (no format change for the
                         * blob request) was not found in NHLT table, try to
 #else
 static int
 snd_sof_get_nhlt_endpoint_data(struct snd_sof_dev *sdev, struct snd_sof_dai *dai,
-                              bool single_format,
+                              bool single_bitdepth,
                               struct snd_pcm_hw_params *params, u32 dai_index,
                               u32 linktype, u8 dir, u32 **dst, u32 *len)
 {
 }
 #endif
 
-bool sof_ipc4_copier_is_single_format(struct snd_sof_dev *sdev,
-                                     struct sof_ipc4_pin_format *pin_fmts,
-                                     u32 pin_fmts_size)
+bool sof_ipc4_copier_is_single_bitdepth(struct snd_sof_dev *sdev,
+                                       struct sof_ipc4_pin_format *pin_fmts,
+                                       u32 pin_fmts_size)
 {
        struct sof_ipc4_audio_format *fmt;
        u32 valid_bits;
        struct snd_pcm_hw_params dai_params = *params;
        struct sof_ipc4_copier_data *copier_data;
        struct sof_ipc4_copier *ipc4_copier;
-       bool single_format;
+       bool single_bitdepth;
        int ret;
 
        ipc4_copier = dai->private;
         * format lookup
         */
        if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
-               single_format = sof_ipc4_copier_is_single_format(sdev,
+               single_bitdepth = sof_ipc4_copier_is_single_bitdepth(sdev,
                                                available_fmt->output_pin_fmts,
                                                available_fmt->num_output_formats);
 
                /* Update the dai_params with the only supported format */
-               if (single_format) {
+               if (single_bitdepth) {
                        ret = sof_ipc4_update_hw_params(sdev, &dai_params,
                                        &available_fmt->output_pin_fmts[0].audio_fmt,
                                        BIT(SNDRV_PCM_HW_PARAM_FORMAT));
                                return ret;
                }
        } else {
-               single_format = sof_ipc4_copier_is_single_format(sdev,
+               single_bitdepth = sof_ipc4_copier_is_single_bitdepth(sdev,
                                                available_fmt->input_pin_fmts,
                                                available_fmt->num_input_formats);
 
                /* Update the dai_params with the only supported format */
-               if (single_format) {
+               if (single_bitdepth) {
                        ret = sof_ipc4_update_hw_params(sdev, &dai_params,
                                        &available_fmt->input_pin_fmts[0].audio_fmt,
                                        BIT(SNDRV_PCM_HW_PARAM_FORMAT));
                }
        }
 
-       ret = snd_sof_get_nhlt_endpoint_data(sdev, dai, single_format,
+       ret = snd_sof_get_nhlt_endpoint_data(sdev, dai, single_bitdepth,
                                             &dai_params,
                                             ipc4_copier->dai_index,
                                             ipc4_copier->dai_type, dir,
        u32 out_ref_rate, out_ref_channels;
        u32 deep_buffer_dma_ms = 0;
        int output_fmt_index;
-       bool single_output_format;
+       bool single_output_bitdepth;
        int i;
 
        dev_dbg(sdev->dev, "copier %s, type %d", swidget->widget->name, swidget->id);
                return ret;
 
        /* set the reference params for output format selection */
-       single_output_format = sof_ipc4_copier_is_single_format(sdev,
-                                                               available_fmt->output_pin_fmts,
-                                                               available_fmt->num_output_formats);
+       single_output_bitdepth = sof_ipc4_copier_is_single_bitdepth(sdev,
+                                       available_fmt->output_pin_fmts,
+                                       available_fmt->num_output_formats);
        switch (swidget->id) {
        case snd_soc_dapm_aif_in:
        case snd_soc_dapm_dai_out:
                out_ref_rate = in_fmt->sampling_frequency;
                out_ref_channels = SOF_IPC4_AUDIO_FORMAT_CFG_CHANNELS_COUNT(in_fmt->fmt_cfg);
 
-               if (!single_output_format)
+               if (!single_output_bitdepth)
                        out_ref_valid_bits =
                                SOF_IPC4_AUDIO_FORMAT_CFG_V_BIT_DEPTH(in_fmt->fmt_cfg);
                break;
        case snd_soc_dapm_dai_in:
                out_ref_rate = params_rate(fe_params);
                out_ref_channels = params_channels(fe_params);
-               if (!single_output_format) {
+               if (!single_output_bitdepth) {
                        out_ref_valid_bits = sof_ipc4_get_valid_bits(sdev, fe_params);
                        if (out_ref_valid_bits < 0)
                                return out_ref_valid_bits;
         * if the output format is the same across all available output formats, choose
         * that as the reference.
         */
-       if (single_output_format) {
+       if (single_output_bitdepth) {
                struct sof_ipc4_audio_format *out_fmt;
 
                out_fmt = &available_fmt->output_pin_fmts[0].audio_fmt;