ASoC: meson: axg-iface: set continuous rates

The axg TDM HW does not depend on a selected set of rates.
The hardware itself, just takes an input clock and work with it, regardless
of its rate. In this way, the rates TDM can take are continuous.

What might force the use of specific rate are the PLL available as clock
and/or the codecs facing the TDM HW. Either way, this constraint does not
belong in the TDM interface driver.

Allow any rate as far as TDM is concerned by setting
SNDRV_PCM_RATE_CONTINUOUS with an interval it has been tested with.

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://patch.msgid.link/20240920-asoc-axg-iface-continuous-v1-1-6075d7db0e61@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/meson/axg-tdm-interface.c b/sound/soc/meson/axg-tdm-interface.c
index 62057c7..09103ee 100644 (file)
--- a/sound/soc/meson/axg-tdm-interface.c
+++ b/sound/soc/meson/axg-tdm-interface.c
@@ -442,14 +442,18 @@ static const struct snd_soc_dai_driver axg_tdm_iface_dai_drv[] = {
                        .stream_name    = "Playback",
                        .channels_min   = 1,
                        .channels_max   = AXG_TDM_CHANNEL_MAX,
-                       .rates          = AXG_TDM_RATES,
+                       .rates          = SNDRV_PCM_RATE_CONTINUOUS,
+                       .rate_min       = 5512,
+                       .rate_max       = 768000,
                        .formats        = AXG_TDM_FORMATS,
                },
                .capture = {
                        .stream_name    = "Capture",
                        .channels_min   = 1,
                        .channels_max   = AXG_TDM_CHANNEL_MAX,
-                       .rates          = AXG_TDM_RATES,
+                       .rates          = SNDRV_PCM_RATE_CONTINUOUS,
+                       .rate_min       = 5512,
+                       .rate_max       = 768000,
                        .formats        = AXG_TDM_FORMATS,
                },
                .id = TDM_IFACE_PAD,
@@ -461,7 +465,9 @@ static const struct snd_soc_dai_driver axg_tdm_iface_dai_drv[] = {
                        .stream_name    = "Loopback",
                        .channels_min   = 1,
                        .channels_max   = AXG_TDM_CHANNEL_MAX,
-                       .rates          = AXG_TDM_RATES,
+                       .rates          = SNDRV_PCM_RATE_CONTINUOUS,
+                       .rate_min       = 5512,
+                       .rate_max       = 768000,
                        .formats        = AXG_TDM_FORMATS,
                },
                .id = TDM_IFACE_LOOPBACK,

diff --git a/sound/soc/meson/axg-tdm.h b/sound/soc/meson/axg-tdm.h
index 1a17f54..acfcd48 100644 (file)
--- a/sound/soc/meson/axg-tdm.h
+++ b/sound/soc/meson/axg-tdm.h
@@ -15,8 +15,6 @@
 
 #define AXG_TDM_NUM_LANES      4
 #define AXG_TDM_CHANNEL_MAX    128
-#define AXG_TDM_RATES          (SNDRV_PCM_RATE_5512 |          \
-                                SNDRV_PCM_RATE_8000_768000)
 #define AXG_TDM_FORMATS                (SNDRV_PCM_FMTBIT_S8 |          \
                                 SNDRV_PCM_FMTBIT_S16_LE |      \
                                 SNDRV_PCM_FMTBIT_S20_LE |      \