ASoC: rt1308-sdw: use slot and rx_mask to configure stream

If the DAI was configured with a set_tdm_slots() call, use the information.

A platform or machine driver may configure each amplifier to extract
different bitSlots from the frame, or extract the same data and use
processing to generate the relevant output. The latter case is easier
to handle in case of orientation changes.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200325212905.28145-3-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt1308-sdw.c b/sound/soc/codecs/rt1308-sdw.c
index 8763192..a5a7e46 100644 (file)
--- a/sound/soc/codecs/rt1308-sdw.c
+++ b/sound/soc/codecs/rt1308-sdw.c
@@ -539,7 +539,7 @@ static int rt1308_sdw_hw_params(struct snd_pcm_substream *substream,
        struct sdw_port_config port_config;
        enum sdw_data_direction direction;
        struct sdw_stream_data *stream;
-       int retval, port, num_channels;
+       int retval, port, num_channels, ch_mask;
 
        dev_dbg(dai->dev, "%s %s", __func__, dai->name);
        stream = snd_soc_dai_get_dma_data(dai, substream);
@@ -559,13 +559,20 @@ static int rt1308_sdw_hw_params(struct snd_pcm_substream *substream,
                return -EINVAL;
        }
 
+       if (rt1308->slots) {
+               num_channels = rt1308->slots;
+               ch_mask = rt1308->rx_mask;
+       } else {
+               num_channels = params_channels(params);
+               ch_mask = (1 << num_channels) - 1;
+       }
+
        stream_config.frame_rate = params_rate(params);
-       stream_config.ch_count = params_channels(params);
+       stream_config.ch_count = num_channels;
        stream_config.bps = snd_pcm_format_width(params_format(params));
        stream_config.direction = direction;
 
-       num_channels = params_channels(params);
-       port_config.ch_mask = (1 << (num_channels)) - 1;
+       port_config.ch_mask = ch_mask;
        port_config.num = port;
 
        retval = sdw_stream_add_slave(rt1308->sdw_slave, &stream_config,