From: Daniel Baluta <[email protected]>
WM8962 needs its MCLK when powerup in wm8962_resume(). Thus it's better
to control the MCLK in codec driver. Thus remove the clock enable in
machine driver accordingly.
While at it, get rid of imx_wm8962_remove function since it is now
empty.
Signed-off-by: Daniel Baluta <[email protected]>
---
Changes since v1:
* s/wm8960/imx-wm890/ in subject prefix
* s/dirver/driver in commit message
* took ownership over the patch from Nicolin Chen
as per his agreement.
sound/soc/fsl/imx-wm8962.c | 40 ++++++++--------------------------------
1 file changed, 8 insertions(+), 32 deletions(-)
diff --git a/sound/soc/fsl/imx-wm8962.c b/sound/soc/fsl/imx-wm8962.c
index 1b60958..3d894d9 100644
--- a/sound/soc/fsl/imx-wm8962.c
+++ b/sound/soc/fsl/imx-wm8962.c
@@ -33,7 +33,6 @@ struct imx_wm8962_data {
struct snd_soc_card card;
char codec_dai_name[DAI_NAME_SIZE];
char platform_name[DAI_NAME_SIZE];
- struct clk *codec_clk;
unsigned int clk_frequency;
};
@@ -163,6 +162,7 @@ static int imx_wm8962_probe(struct platform_device *pdev)
struct imx_priv *priv = &card_priv;
struct i2c_client *codec_dev;
struct imx_wm8962_data *data;
+ struct clk *codec_clk;
int int_port, ext_port;
int ret;
@@ -231,19 +231,14 @@ static int imx_wm8962_probe(struct platform_device *pdev)
goto fail;
}
- data->codec_clk = devm_clk_get(&codec_dev->dev, NULL);
- if (IS_ERR(data->codec_clk)) {
- ret = PTR_ERR(data->codec_clk);
+ codec_clk = devm_clk_get(&codec_dev->dev, NULL);
+ if (IS_ERR(codec_clk)) {
+ ret = PTR_ERR(codec_clk);
dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
goto fail;
}
- data->clk_frequency = clk_get_rate(data->codec_clk);
- ret = clk_prepare_enable(data->codec_clk);
- if (ret) {
- dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret);
- goto fail;
- }
+ data->clk_frequency = clk_get_rate(codec_clk);
data->dai.name = "HiFi";
data->dai.stream_name = "HiFi";
@@ -258,10 +253,10 @@ static int imx_wm8962_probe(struct platform_device *pdev)
data->card.dev = &pdev->dev;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
- goto clk_fail;
+ goto fail;
ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
if (ret)
- goto clk_fail;
+ goto fail;
data->card.num_links = 1;
data->card.owner = THIS_MODULE;
data->card.dai_link = &data->dai;
@@ -277,16 +272,9 @@ static int imx_wm8962_probe(struct platform_device *pdev)
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
- goto clk_fail;
+ goto fail;
}
- of_node_put(ssi_np);
- of_node_put(codec_np);
-
- return 0;
-
-clk_fail:
- clk_disable_unprepare(data->codec_clk);
fail:
of_node_put(ssi_np);
of_node_put(codec_np);
@@ -294,17 +282,6 @@ static int imx_wm8962_probe(struct platform_device *pdev)
return ret;
}
-static int imx_wm8962_remove(struct platform_device *pdev)
-{
- struct snd_soc_card *card = platform_get_drvdata(pdev);
- struct imx_wm8962_data *data = snd_soc_card_get_drvdata(card);
-
- if (!IS_ERR(data->codec_clk))
- clk_disable_unprepare(data->codec_clk);
-
- return 0;
-}
-
static const struct of_device_id imx_wm8962_dt_ids[] = {
{ .compatible = "fsl,imx-audio-wm8962", },
{ /* sentinel */ }
@@ -318,7 +295,6 @@ static struct platform_driver imx_wm8962_driver = {
.of_match_table = imx_wm8962_dt_ids,
},
.probe = imx_wm8962_probe,
- .remove = imx_wm8962_remove,
};
module_platform_driver(imx_wm8962_driver);
--
2.7.4
On Fri, Mar 24, 2017 at 11:14:48AM +0200, Daniel Baluta wrote:
> From: Daniel Baluta <[email protected]>
>
> WM8962 needs its MCLK when powerup in wm8962_resume(). Thus it's better
> to control the MCLK in codec driver. Thus remove the clock enable in
> machine driver accordingly.
>
> While at it, get rid of imx_wm8962_remove function since it is now
> empty.
>
> Signed-off-by: Daniel Baluta <[email protected]>
> ---
> Changes since v1:
> * s/wm8960/imx-wm890/ in subject prefix
imx-wm8962 vs imx-wm8960 :)
> * s/dirver/driver in commit message
> * took ownership over the patch from Nicolin Chen
> as per his agreement.
>
> sound/soc/fsl/imx-wm8962.c | 40 ++++++++--------------------------------
> 1 file changed, 8 insertions(+), 32 deletions(-)
>
> diff --git a/sound/soc/fsl/imx-wm8962.c b/sound/soc/fsl/imx-wm8962.c
> index 1b60958..3d894d9 100644
> --- a/sound/soc/fsl/imx-wm8962.c
> +++ b/sound/soc/fsl/imx-wm8962.c
> @@ -33,7 +33,6 @@ struct imx_wm8962_data {
> struct snd_soc_card card;
> char codec_dai_name[DAI_NAME_SIZE];
> char platform_name[DAI_NAME_SIZE];
> - struct clk *codec_clk;
> unsigned int clk_frequency;
> };
>
> @@ -163,6 +162,7 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> struct imx_priv *priv = &card_priv;
> struct i2c_client *codec_dev;
> struct imx_wm8962_data *data;
> + struct clk *codec_clk;
> int int_port, ext_port;
> int ret;
>
> @@ -231,19 +231,14 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> goto fail;
> }
>
> - data->codec_clk = devm_clk_get(&codec_dev->dev, NULL);
> - if (IS_ERR(data->codec_clk)) {
> - ret = PTR_ERR(data->codec_clk);
> + codec_clk = devm_clk_get(&codec_dev->dev, NULL);
I actually just noticed a problem here -- not from your change but
it existed in the first place. IIRC, devm_clk_get() would only be
properly clk_put() for this driver if we passed pdev->dev while we
are using codec_dev->dev. So here we probably should use clk_get()
instead and call a clk_put() right after fetching the clock rate.
Would you please fix this issue along with this change since you
are touching the exact same line of the code?
Thanks
Nicolin
> + if (IS_ERR(codec_clk)) {
> + ret = PTR_ERR(codec_clk);
> dev_err(&codec_dev->dev, "failed to get codec clk: %d\n", ret);
> goto fail;
> }
>
> - data->clk_frequency = clk_get_rate(data->codec_clk);
> - ret = clk_prepare_enable(data->codec_clk);
> - if (ret) {
> - dev_err(&codec_dev->dev, "failed to enable codec clk: %d\n", ret);
> - goto fail;
> - }
> + data->clk_frequency = clk_get_rate(codec_clk);
>
> data->dai.name = "HiFi";
> data->dai.stream_name = "HiFi";
> @@ -258,10 +253,10 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> data->card.dev = &pdev->dev;
> ret = snd_soc_of_parse_card_name(&data->card, "model");
> if (ret)
> - goto clk_fail;
> + goto fail;
> ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
> if (ret)
> - goto clk_fail;
> + goto fail;
> data->card.num_links = 1;
> data->card.owner = THIS_MODULE;
> data->card.dai_link = &data->dai;
> @@ -277,16 +272,9 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
> if (ret) {
> dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
> - goto clk_fail;
> + goto fail;
> }
>
> - of_node_put(ssi_np);
> - of_node_put(codec_np);
> -
> - return 0;
> -
> -clk_fail:
> - clk_disable_unprepare(data->codec_clk);
> fail:
> of_node_put(ssi_np);
> of_node_put(codec_np);
> @@ -294,17 +282,6 @@ static int imx_wm8962_probe(struct platform_device *pdev)
> return ret;
> }