static int msm_mclk_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
pr_debug("%s: event = %d\n", __func__, event);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
clk_users++;
pr_debug("%s: clk_users = %d\n", __func__, clk_users);
if (clk_users != 1)
return 0;
codec_clk = clk_get(NULL, "i2s_spkr_osr_clk");
if (codec_clk) {
clk_set_rate(codec_clk, 12288000);
clk_enable(codec_clk);
tabla_mclk_enable(w->codec, 1, true);
} else {
pr_err("%s: Error setting Tabla MCLK\n", __func__);
clk_users--;
return -EINVAL;
}
break;
case SND_SOC_DAPM_POST_PMD:
pr_debug("%s: clk_users = %d\n", __func__, clk_users);
if (clk_users == 0)
return 0;
clk_users--;
if (!clk_users) {
pr_debug("%s: disabling MCLK. clk_users = %d\n",
__func__, clk_users);
clk_disable(codec_clk);
clk_put(codec_clk);
tabla_mclk_enable(w->codec, 0, true);
}
break;
}
return 0;
}
static int msm8960_enable_codec_ext_clk(struct snd_soc_codec *codec, int enable,
bool dapm)
{
int r = 0;
pr_debug("%s: enable = %d\n", __func__, enable);
mutex_lock(&cdc_mclk_mutex);
if (enable) {
clk_users++;
pr_debug("%s: clk_users = %d\n", __func__, clk_users);
if (clk_users == 1) {
codec_clk = clk_get(NULL, "i2s_spkr_osr_clk");
if (codec_clk) {
clk_set_rate(codec_clk, TABLA_EXT_CLK_RATE);
clk_enable(codec_clk);
tabla_mclk_enable(codec, 1, dapm);
} else {
pr_err("%s: Error setting Tabla MCLK\n",
__func__);
clk_users--;
r = -EINVAL;
}
}
} else {
if (clk_users > 0) {
clk_users--;
pr_debug("%s: clk_users = %d\n", __func__, clk_users);
if (clk_users == 0) {
pr_debug("%s: disabling MCLK. clk_users = %d\n",
__func__, clk_users);
clk_disable(codec_clk);
clk_put(codec_clk);
tabla_mclk_enable(codec, 0, dapm);
}
} else {
pr_err("%s: Error releasing Tabla MCLK\n", __func__);
r = -EINVAL;
}
}
mutex_unlock(&cdc_mclk_mutex);
return r;
}
