[PATCH v3 1/8] ASoC: qcom: Add common array to initialize soc based core clocks

Rohit kumar
2020-07-08T05:09:12Z

From: Ajit Pandey <ajitp@codeaurora.org>

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

Signed-off-by: Ajit Pandey <ajitp@codeaurora.org>
Signed-off-by: Rohit kumar <rohitkr@codeaurora.org>
---
sound/soc/qcom/lpass-apq8016.c | 39 +++++++++++++++++++--------------------
sound/soc/qcom/lpass.h | 10 +++++++---
2 files changed, 26 insertions(+), 23 deletions(-)

diff --git a/sound/soc/qcom/lpass-apq8016.c b/sound/soc/qcom/lpass-apq8016.c
index b3610d0..8210e37 100644
--- a/sound/soc/qcom/lpass-apq8016.c
+++ b/sound/soc/qcom/lpass-apq8016.c
@@ -161,32 +161,27 @@ 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(dev, "error getting pcnoc-mport-clk: %ld\n",
- PTR_ERR(drvdata->pcnoc_mport_clk));
- return PTR_ERR(drvdata->pcnoc_mport_clk);
- }

- ret = clk_prepare_enable(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 = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks);
if (ret) {
- dev_err(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(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(dev, "Error enabling pcnoc_sway_clk: %d\n", ret);
+ dev_err(dev, "apq8016 clk_enable failed\n");
return ret;
}

@@ -197,8 +192,7 @@ 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;
}
@@ -219,6 +213,11 @@ static struct lpass_variant apq8016_data = {
.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 bd19ec5..450020e 100644
--- a/sound/soc/qcom/lpass.h
+++ b/sound/soc/qcom/lpass.h
@@ -51,9 +51,9 @@ 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;

};

@@ -89,6 +89,10 @@ 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 */
--
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