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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:47:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:47:48 +0000
commita1865fbd182b17f2d2f465f557af5b45501c5f1c (patch)
tree59da519ef2e59c763bb8efdbe67bc348cf833767 /sound/soc/meson/axg-tdm-interface.c
parentAdding upstream version 6.7.9. (diff)
downloadlinux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.tar.xz
linux-a1865fbd182b17f2d2f465f557af5b45501c5f1c.zip
Adding upstream version 6.7.12.upstream/6.7.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/soc/meson/axg-tdm-interface.c')
-rw-r--r--sound/soc/meson/axg-tdm-interface.c29
1 files changed, 20 insertions, 9 deletions
diff --git a/sound/soc/meson/axg-tdm-interface.c b/sound/soc/meson/axg-tdm-interface.c
index 1c3d433cef..2cedbce738 100644
--- a/sound/soc/meson/axg-tdm-interface.c
+++ b/sound/soc/meson/axg-tdm-interface.c
@@ -12,6 +12,9 @@
#include "axg-tdm.h"
+/* Maximum bit clock frequency according the datasheets */
+#define MAX_SCLK 100000000 /* Hz */
+
enum {
TDM_IFACE_PAD,
TDM_IFACE_LOOPBACK,
@@ -153,19 +156,27 @@ static int axg_tdm_iface_startup(struct snd_pcm_substream *substream,
return -EINVAL;
}
- /* Apply component wide rate symmetry */
if (snd_soc_component_active(dai->component)) {
+ /* Apply component wide rate symmetry */
ret = snd_pcm_hw_constraint_single(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE,
iface->rate);
- if (ret < 0) {
- dev_err(dai->dev,
- "can't set iface rate constraint\n");
- return ret;
- }
+
+ } else {
+ /* Limit rate according to the slot number and width */
+ unsigned int max_rate =
+ MAX_SCLK / (iface->slots * iface->slot_width);
+ ret = snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_RATE,
+ 0, max_rate);
}
- return 0;
+ if (ret < 0)
+ dev_err(dai->dev, "can't set iface rate constraint\n");
+ else
+ ret = 0;
+
+ return ret;
}
static int axg_tdm_iface_set_stream(struct snd_pcm_substream *substream,
@@ -264,8 +275,8 @@ static int axg_tdm_iface_set_sclk(struct snd_soc_dai *dai,
srate = iface->slots * iface->slot_width * params_rate(params);
if (!iface->mclk_rate) {
- /* If no specific mclk is requested, default to bit clock * 4 */
- clk_set_rate(iface->mclk, 4 * srate);
+ /* If no specific mclk is requested, default to bit clock * 2 */
+ clk_set_rate(iface->mclk, 2 * srate);
} else {
/* Check if we can actually get the bit clock from mclk */
if (iface->mclk_rate % srate) {