ASoC: sgtl5000: Let the codec acquire its clock

On a mx6qsabrelite board the following error happens on probe:

sgtl5000: probe of 0-000a failed with error -5
imx-sgtl5000 sound.13: ASoC: CODEC (null) not registered
imx-sgtl5000 sound.13: snd_soc_register_card failed (-517)
platform sound.13: Driver imx-sgtl5000 requests probe defer

Prior to reading the codec ID we need to turn the SYS_MCLK clock, so let's
enable the codec clock inside sgtl5000_i2c_probe().

Also remove the codec clock enable/disable functions from the machine driver.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 7 insertions, 23 deletions

diff --git a/sound/soc/fsl/imx-sgtl5000.c b/sound/soc/fsl/imx-sgtl5000.c
index a60aaa053d28..823151b7653b 100644
--- a/sound/soc/fsl/imx-sgtl5000.c
+++ b/sound/soc/fsl/imx-sgtl5000.c
@@ -129,20 +129,10 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
 	}
 
 	data->codec_clk = clk_get(&codec_dev->dev, NULL);
-	if (IS_ERR(data->codec_clk)) {
-		/* assuming clock enabled by default */
-		data->codec_clk = NULL;
-		ret = of_property_read_u32(codec_np, "clock-frequency",
-					&data->clk_frequency);
-		if (ret) {
-			dev_err(&codec_dev->dev,
-				"clock-frequency missing or invalid\n");
-			goto fail;
-		}
-	} else {
-		data->clk_frequency = clk_get_rate(data->codec_clk);
-		clk_prepare_enable(data->codec_clk);
-	}
+	if (IS_ERR(data->codec_clk))
+		goto fail;
+
+	data->clk_frequency = clk_get_rate(data->codec_clk);
 
 	data->dai.name = "HiFi";
 	data->dai.stream_name = "HiFi";
@@ -157,10 +147,10 @@ static int imx_sgtl5000_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;
@@ -170,7 +160,7 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
 	ret = snd_soc_register_card(&data->card);
 	if (ret) {
 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
-		goto clk_fail;
+		goto fail;
 	}
 
 	platform_set_drvdata(pdev, data);
@@ -179,8 +169,6 @@ static int imx_sgtl5000_probe(struct platform_device *pdev)
 
 	return 0;
 
-clk_fail:
-	clk_put(data->codec_clk);
 fail:
 	if (ssi_np)
 		of_node_put(ssi_np);
@@ -194,10 +182,6 @@ static int imx_sgtl5000_remove(struct platform_device *pdev)
 {
 	struct imx_sgtl5000_data *data = platform_get_drvdata(pdev);
 
-	if (data->codec_clk) {
-		clk_disable_unprepare(data->codec_clk);
-		clk_put(data->codec_clk);
-	}
 	snd_soc_unregister_card(&data->card);
 
 	return 0;