ASoC: soc-pcm: add soc_pcm_hw_update_chan()

We have soc_pcm_hw_update_rate() now.
This patch creates same function for chan.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/87r1lw90oo.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 0cf212c..23d6709 100644 (file)
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -478,6 +478,8 @@ static void soc_pcm_hw_init(struct snd_pcm_hardware *hw)
        hw->rates               = UINT_MAX;
        hw->rate_min            = 0;
        hw->rate_max            = UINT_MAX;
+       hw->channels_min        = 0;
+       hw->channels_max        = UINT_MAX;
 }
 
 static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw,
@@ -493,6 +495,13 @@ static void soc_pcm_hw_update_rate(struct snd_pcm_hardware *hw,
        hw->rate_max = min_not_zero(hw->rate_max, p->rate_max);
 }
 
+static void soc_pcm_hw_update_chan(struct snd_pcm_hardware *hw,
+                                  struct snd_soc_pcm_stream *p)
+{
+       hw->channels_min = max(hw->channels_min, p->channels_min);
+       hw->channels_max = min(hw->channels_max, p->channels_max);
+}
+
 /**
  * snd_soc_runtime_calc_hw() - Calculate hw limits for a PCM stream
  * @rtd: ASoC PCM runtime
@@ -509,7 +518,6 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
        struct snd_soc_dai *cpu_dai;
        struct snd_soc_pcm_stream *codec_stream;
        struct snd_soc_pcm_stream *cpu_stream;
-       unsigned int chan_min = 0, chan_max = UINT_MAX;
        unsigned int cpu_chan_min = 0, cpu_chan_max = UINT_MAX;
        u64 formats = ULLONG_MAX;
        int i;
@@ -530,11 +538,12 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 
                cpu_stream = snd_soc_dai_get_pcm_stream(cpu_dai, stream);
 
-               cpu_chan_min = max(cpu_chan_min, cpu_stream->channels_min);
-               cpu_chan_max = min(cpu_chan_max, cpu_stream->channels_max);
+               soc_pcm_hw_update_chan(hw, cpu_stream);
                soc_pcm_hw_update_rate(hw, cpu_stream);
                formats &= cpu_stream->formats;
        }
+       cpu_chan_min = hw->channels_min;
+       cpu_chan_max = hw->channels_max;
 
        /* second calculate min/max only for CODECs in the DAI link */
        for_each_rtd_codec_dais(rtd, i, codec_dai) {
@@ -550,14 +559,13 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
 
                codec_stream = snd_soc_dai_get_pcm_stream(codec_dai, stream);
 
-               chan_min = max(chan_min, codec_stream->channels_min);
-               chan_max = min(chan_max, codec_stream->channels_max);
+               soc_pcm_hw_update_chan(hw, codec_stream);
                soc_pcm_hw_update_rate(hw, codec_stream);
                formats &= codec_stream->formats;
        }
 
        /* Verify both a valid CPU DAI and a valid CODEC DAI were found */
-       if (!chan_min || !cpu_chan_min)
+       if (!hw->channels_min)
                return -EINVAL;
 
        /*
@@ -566,13 +574,11 @@ int snd_soc_runtime_calc_hw(struct snd_soc_pcm_runtime *rtd,
         * channel allocation be fixed up later
         */
        if (rtd->num_codecs > 1) {
-               chan_min = cpu_chan_min;
-               chan_max = cpu_chan_max;
+               hw->channels_min = cpu_chan_min;
+               hw->channels_max = cpu_chan_max;
        }
 
        /* finally find a intersection between CODECs and CPUs */
-       hw->channels_min = max(chan_min, cpu_chan_min);
-       hw->channels_max = min(chan_max, cpu_chan_max);
        hw->formats = formats;
 
        return 0;
@@ -1523,8 +1529,7 @@ static void dpcm_init_runtime_hw(struct snd_pcm_runtime *runtime,
        struct snd_pcm_hardware *hw = &runtime->hw;
 
        soc_pcm_hw_update_rate(hw, stream);
-       runtime->hw.channels_min = stream->channels_min;
-       runtime->hw.channels_max = stream->channels_max;
+       soc_pcm_hw_update_chan(hw, stream);
        if (runtime->hw.formats)
                runtime->hw.formats &= stream->formats;
        else
@@ -1601,10 +1606,7 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
 
                        cpu_stream = snd_soc_dai_get_pcm_stream(dai, stream);
 
-                       hw->channels_min = max(hw->channels_min,
-                                              cpu_stream->channels_min);
-                       hw->channels_max = min(hw->channels_max,
-                                              cpu_stream->channels_max);
+                       soc_pcm_hw_update_chan(hw, cpu_stream);
                }
 
                /*
@@ -1614,10 +1616,7 @@ static void dpcm_runtime_merge_chan(struct snd_pcm_substream *substream,
                if (be->num_codecs == 1) {
                        codec_stream = snd_soc_dai_get_pcm_stream(asoc_rtd_to_codec(be, 0), stream);
 
-                       hw->channels_min = max(hw->channels_min,
-                                              codec_stream->channels_min);
-                       hw->channels_max = min(hw->channels_max,
-                                              codec_stream->channels_max);
+                       soc_pcm_hw_update_chan(hw, codec_stream);
                }
        }
 }