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-rw-r--r--sound/soc/intel/boards/cht_bsw_max98090_ti.c47
1 files changed, 41 insertions, 6 deletions
diff --git a/sound/soc/intel/boards/cht_bsw_max98090_ti.c b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
index 3263b0495853..c0e0844f75b9 100644
--- a/sound/soc/intel/boards/cht_bsw_max98090_ti.c
+++ b/sound/soc/intel/boards/cht_bsw_max98090_ti.c
@@ -43,6 +43,7 @@ struct cht_mc_private {
struct clk *mclk;
struct snd_soc_jack jack;
bool ts3a227e_present;
+ int quirks;
};
static int platform_clock_control(struct snd_soc_dapm_widget *w,
@@ -54,6 +55,10 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w,
struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
int ret;
+ /* See the comment in snd_cht_mc_probe() */
+ if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+ return 0;
+
codec_dai = snd_soc_card_get_codec_dai(card, CHT_CODEC_DAI);
if (!codec_dai) {
dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
@@ -223,6 +228,10 @@ static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
"jack detection gpios not added, error %d\n", ret);
}
+ /* See the comment in snd_cht_mc_probe() */
+ if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+ return 0;
+
/*
* The firmware might enable the clock at
* boot (this information may or may not
@@ -423,16 +432,15 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
const char *mclk_name;
struct snd_soc_acpi_mach *mach;
const char *platform_name;
- int quirks = 0;
-
- dmi_id = dmi_first_match(cht_max98090_quirk_table);
- if (dmi_id)
- quirks = (unsigned long)dmi_id->driver_data;
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (!drv)
return -ENOMEM;
+ dmi_id = dmi_first_match(cht_max98090_quirk_table);
+ if (dmi_id)
+ drv->quirks = (unsigned long)dmi_id->driver_data;
+
drv->ts3a227e_present = acpi_dev_found("104C227E");
if (!drv->ts3a227e_present) {
/* no need probe TI jack detection chip */
@@ -458,7 +466,7 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
snd_soc_card_cht.dev = &pdev->dev;
snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
- if (quirks & QUIRK_PMC_PLT_CLK_0)
+ if (drv->quirks & QUIRK_PMC_PLT_CLK_0)
mclk_name = "pmc_plt_clk_0";
else
mclk_name = "pmc_plt_clk_3";
@@ -471,6 +479,21 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
return PTR_ERR(drv->mclk);
}
+ /*
+ * Boards which have the MAX98090's clk connected to clk_0 do not seem
+ * to like it if we muck with the clock. If we disable the clock when
+ * it is unused we get "max98090 i2c-193C9890:00: PLL unlocked" errors
+ * and the PLL never seems to lock again.
+ * So for these boards we enable it here once and leave it at that.
+ */
+ if (drv->quirks & QUIRK_PMC_PLT_CLK_0) {
+ ret_val = clk_prepare_enable(drv->mclk);
+ if (ret_val < 0) {
+ dev_err(&pdev->dev, "MCLK enable error: %d\n", ret_val);
+ return ret_val;
+ }
+ }
+
ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
if (ret_val) {
dev_err(&pdev->dev,
@@ -481,11 +504,23 @@ static int snd_cht_mc_probe(struct platform_device *pdev)
return ret_val;
}
+static int snd_cht_mc_remove(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = platform_get_drvdata(pdev);
+ struct cht_mc_private *ctx = snd_soc_card_get_drvdata(card);
+
+ if (ctx->quirks & QUIRK_PMC_PLT_CLK_0)
+ clk_disable_unprepare(ctx->mclk);
+
+ return 0;
+}
+
static struct platform_driver snd_cht_mc_driver = {
.driver = {
.name = "cht-bsw-max98090",
},
.probe = snd_cht_mc_probe,
+ .remove = snd_cht_mc_remove,
};
module_platform_driver(snd_cht_mc_driver)