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authorYu-Hsuan Hsu <yuhsuan@chromium.org>2019-11-26 15:54:24 +0800
committerMark Brown <broonie@kernel.org>2019-11-27 12:50:08 +0000
commit756ae8f237e19a014a1c20ad5a51b0686463d1f7 (patch)
treeb389febafc3c72768fd76ae62e1468030738d67e /sound/soc
parentbc094709de0192a756c6946a7c89c543243ae609 (diff)
ASoC: AMD: Enable clk in startup intead of hw_params
Some usages only call startup and shutdown without setting hw_params (e.g. arecord --dump-hw-params). If we don't enable clk in startup, it will cause ref count error because the clk will be disabled in shutdown. For this reason, we should move enabling clk from hw_params to startup. In addition, the hw_params is fixed in this driver(48000 rate, 2 channels, S16_LE format) so we don't need to change the clk rate after the hw_params is set. Signed-off-by: Yu-Hsuan Hsu <yuhsuan@chromium.org> Acked-by: Akshu Agrawal <akshu.agarawal@amd.com> Link: https://lore.kernel.org/r/20191126075424.80668-1-yuhsuan@chromium.org Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/amd/acp-da7219-max98357a.c46
1 files changed, 14 insertions, 32 deletions
diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c
index f4ee6798154a..7a5621e5e233 100644
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -96,14 +96,19 @@ static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd)
return 0;
}
-static int da7219_clk_enable(struct snd_pcm_substream *substream,
- int wclk_rate, int bclk_rate)
+static int da7219_clk_enable(struct snd_pcm_substream *substream)
{
int ret = 0;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
- clk_set_rate(da7219_dai_wclk, wclk_rate);
- clk_set_rate(da7219_dai_bclk, bclk_rate);
+ /*
+ * Set wclk to 48000 because the rate constraint of this driver is
+ * 48000. ADAU7002 spec: "The ADAU7002 requires a BCLK rate that is
+ * minimum of 64x the LRCLK sample rate." DA7219 is the only clk
+ * source so for all codecs we have to limit bclk to 64X lrclk.
+ */
+ clk_set_rate(da7219_dai_wclk, 48000);
+ clk_set_rate(da7219_dai_bclk, 48000 * 64);
ret = clk_prepare_enable(da7219_dai_bclk);
if (ret < 0) {
dev_err(rtd->dev, "can't enable master clock %d\n", ret);
@@ -156,7 +161,7 @@ static int cz_da7219_play_startup(struct snd_pcm_substream *substream)
&constraints_rates);
machine->play_i2s_instance = I2S_SP_INSTANCE;
- return 0;
+ return da7219_clk_enable(substream);
}
static int cz_da7219_cap_startup(struct snd_pcm_substream *substream)
@@ -178,7 +183,7 @@ static int cz_da7219_cap_startup(struct snd_pcm_substream *substream)
machine->cap_i2s_instance = I2S_SP_INSTANCE;
machine->capture_channel = CAP_CHANNEL1;
- return 0;
+ return da7219_clk_enable(substream);
}
static int cz_max_startup(struct snd_pcm_substream *substream)
@@ -199,7 +204,7 @@ static int cz_max_startup(struct snd_pcm_substream *substream)
&constraints_rates);
machine->play_i2s_instance = I2S_BT_INSTANCE;
- return 0;
+ return da7219_clk_enable(substream);
}
static int cz_dmic0_startup(struct snd_pcm_substream *substream)
@@ -220,7 +225,7 @@ static int cz_dmic0_startup(struct snd_pcm_substream *substream)
&constraints_rates);
machine->cap_i2s_instance = I2S_BT_INSTANCE;
- return 0;
+ return da7219_clk_enable(substream);
}
static int cz_dmic1_startup(struct snd_pcm_substream *substream)
@@ -242,25 +247,7 @@ static int cz_dmic1_startup(struct snd_pcm_substream *substream)
machine->cap_i2s_instance = I2S_SP_INSTANCE;
machine->capture_channel = CAP_CHANNEL0;
- return 0;
-}
-
-static int cz_da7219_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- int wclk, bclk;
-
- wclk = params_rate(params);
- bclk = wclk * params_channels(params) *
- snd_pcm_format_width(params_format(params));
- /* ADAU7002 spec: "The ADAU7002 requires a BCLK rate
- * that is minimum of 64x the LRCLK sample rate."
- * DA7219 is the only clk source so for all codecs
- * we have to limit bclk to 64X lrclk.
- */
- if (bclk < (wclk * 64))
- bclk = wclk * 64;
- return da7219_clk_enable(substream, wclk, bclk);
+ return da7219_clk_enable(substream);
}
static void cz_da7219_shutdown(struct snd_pcm_substream *substream)
@@ -271,31 +258,26 @@ static void cz_da7219_shutdown(struct snd_pcm_substream *substream)
static const struct snd_soc_ops cz_da7219_play_ops = {
.startup = cz_da7219_play_startup,
.shutdown = cz_da7219_shutdown,
- .hw_params = cz_da7219_params,
};
static const struct snd_soc_ops cz_da7219_cap_ops = {
.startup = cz_da7219_cap_startup,
.shutdown = cz_da7219_shutdown,
- .hw_params = cz_da7219_params,
};
static const struct snd_soc_ops cz_max_play_ops = {
.startup = cz_max_startup,
.shutdown = cz_da7219_shutdown,
- .hw_params = cz_da7219_params,
};
static const struct snd_soc_ops cz_dmic0_cap_ops = {
.startup = cz_dmic0_startup,
.shutdown = cz_da7219_shutdown,
- .hw_params = cz_da7219_params,
};
static const struct snd_soc_ops cz_dmic1_cap_ops = {
.startup = cz_dmic1_startup,
.shutdown = cz_da7219_shutdown,
- .hw_params = cz_da7219_params,
};
SND_SOC_DAILINK_DEF(designware1,