linux-kernel - [PATCH 03/11] ASoC: qcom: Add common array to initialize soc based core clocks

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Date:   Sat, 11 Apr 2020 13:32:43 +0530
From:   Ajit Pandey <ajitp@...eaurora.org>
To:     alsa-devel@...a-project.org, broonie@...nel.org,
        devicetree@...r.kernel.org, plai@...eaurora.org,
        bgoswami@...eaurora.org, srinivas.kandagatla@...aro.org
Cc:     linux-kernel@...r.kernel.org, tiwai@...e.com,
        Ajit Pandey <ajitp@...eaurora.org>
Subject: [PATCH 03/11] ASoC: qcom: Add common array to initialize soc based core clocks

lpass variants have their own soc specific clocks that needs to be
enable for MI2S audio support. Added a common variable in drvdata to
initialize such clocks using bulk clk api. Such clock names is still
defined in variants specific data and needs to fetched during init.

Signed-off-by: Ajit Pandey <ajitp@...eaurora.org>
---
 sound/soc/qcom/lpass-apq8016.c | 39 ++++++++++++++++++---------------------
 sound/soc/qcom/lpass.h         | 10 +++++++---
 2 files changed, 25 insertions(+), 24 deletions(-)

diff --git a/sound/soc/qcom/lpass-apq8016.c b/sound/soc/qcom/lpass-apq8016.c
index 6575da5..cef4661 100644
--- a/sound/soc/qcom/lpass-apq8016.c
+++ b/sound/soc/qcom/lpass-apq8016.c
@@ -161,33 +161,26 @@ static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
 static int apq8016_lpass_init(struct platform_device *pdev)
 {
 	struct lpass_data *drvdata = platform_get_drvdata(pdev);
+	struct lpass_variant *variant = drvdata->variant;
 	struct device *dev = &pdev->dev;
-	int ret;
+	int ret, i;
 
-	drvdata->pcnoc_mport_clk = devm_clk_get(dev, "pcnoc-mport-clk");
-	if (IS_ERR(drvdata->pcnoc_mport_clk)) {
-		dev_err(&pdev->dev, "error getting pcnoc-mport-clk: %ld\n",
-			PTR_ERR(drvdata->pcnoc_mport_clk));
-		return PTR_ERR(drvdata->pcnoc_mport_clk);
-	}
+	drvdata->clks = devm_kcalloc(dev, variant->num_clks,
+				     sizeof(*drvdata->clks), GFP_KERNEL);
+	drvdata->num_clks = variant->num_clks;
+
+	for (i = 0; i < drvdata->num_clks; i++)
+		drvdata->clks[i].id = variant->clk_name[i];
 
-	ret = clk_prepare_enable(drvdata->pcnoc_mport_clk);
+	ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
 	if (ret) {
-		dev_err(&pdev->dev, "Error enabling pcnoc-mport-clk: %d\n",
-			ret);
+		dev_err(dev, "Failed to get clocks %d\n", ret);
 		return ret;
 	}
 
-	drvdata->pcnoc_sway_clk = devm_clk_get(dev, "pcnoc-sway-clk");
-	if (IS_ERR(drvdata->pcnoc_sway_clk)) {
-		dev_err(&pdev->dev, "error getting pcnoc-sway-clk: %ld\n",
-			PTR_ERR(drvdata->pcnoc_sway_clk));
-		return PTR_ERR(drvdata->pcnoc_sway_clk);
-	}
-
-	ret = clk_prepare_enable(drvdata->pcnoc_sway_clk);
+	ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks);
 	if (ret) {
-		dev_err(&pdev->dev, "Error enabling pcnoc_sway_clk: %d\n", ret);
+		dev_err(dev, "ao8016 clk_enable failed\n");
 		return ret;
 	}
 
@@ -198,8 +191,7 @@ static int apq8016_lpass_exit(struct platform_device *pdev)
 {
 	struct lpass_data *drvdata = platform_get_drvdata(pdev);
 
-	clk_disable_unprepare(drvdata->pcnoc_mport_clk);
-	clk_disable_unprepare(drvdata->pcnoc_sway_clk);
+	clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks);
 
 	return 0;
 }
@@ -220,6 +212,11 @@ static int apq8016_lpass_exit(struct platform_device *pdev)
 	.wrdma_reg_stride	= 0x1000,
 	.wrdma_channel_start	= 5,
 	.wrdma_channels		= 2,
+	.clk_name		= (const char*[]) {
+				   "pcnoc-mport-clk",
+				   "pcnoc-sway-clk",
+				  },
+	.num_clks		= 2,
 	.dai_driver		= apq8016_lpass_cpu_dai_driver,
 	.num_dai		= ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),
 	.dai_osr_clk_names	= (const char *[]) {
diff --git a/sound/soc/qcom/lpass.h b/sound/soc/qcom/lpass.h
index b729686..279cd02 100644
--- a/sound/soc/qcom/lpass.h
+++ b/sound/soc/qcom/lpass.h
@@ -49,9 +49,9 @@ struct lpass_data {
 	/* used it for handling interrupt per dma channel */
 	struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS];
 
-	/* 8016 specific */
-	struct clk *pcnoc_mport_clk;
-	struct clk *pcnoc_sway_clk;
+	/* SOC specific clock list */
+	struct clk_bulk_data *clks;
+	int num_clks;
 
 };
 
@@ -87,6 +87,10 @@ struct lpass_variant {
 	int num_dai;
 	const char * const *dai_osr_clk_names;
 	const char * const *dai_bit_clk_names;
+
+	/* SOC specific clocks configuration */
+	const char **clk_name;
+	int num_clks;
 };
 
 /* register the platform driver from the CPU DAI driver */
-- 
1.9.1