Add runtime PM support to ensure the supply rails are enabled
when necessary.

Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
---
Changes since v1:
 - None.

 drivers/clk/qcom/videocc-sm8150.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/qcom/videocc-sm8150.c b/drivers/clk/qcom/videocc-sm8150.c
index 52a9a453a143..b57df5ff96c4 100644
--- a/drivers/clk/qcom/videocc-sm8150.c
+++ b/drivers/clk/qcom/videocc-sm8150.c
@@ -6,6 +6,7 @@
 #include <linux/clk-provider.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 
 #include <dt-bindings/clock/qcom,videocc-sm8150.h>
@@ -240,17 +241,32 @@ MODULE_DEVICE_TABLE(of, video_cc_sm8150_match_table);
 static int video_cc_sm8150_probe(struct platform_device *pdev)
 {
 	struct regmap *regmap;
+	int ret;
+
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
+
+	ret = pm_runtime_resume_and_get(&pdev->dev);
+	if (ret)
+		return ret;
 
 	regmap = qcom_cc_map(pdev, &video_cc_sm8150_desc);
-	if (IS_ERR(regmap))
+	if (IS_ERR(regmap)) {
+		pm_runtime_put(&pdev->dev);
 		return PTR_ERR(regmap);
+	}
 
 	clk_trion_pll_configure(&video_pll0, regmap, &video_pll0_config);
 
 	/* Keep VIDEO_CC_XO_CLK ALWAYS-ON */
 	regmap_update_bits(regmap, 0x984, 0x1, 0x1);
 
-	return qcom_cc_really_probe(pdev, &video_cc_sm8150_desc, regmap);
+	ret = qcom_cc_really_probe(pdev, &video_cc_sm8150_desc, regmap);
+
+	pm_runtime_put(&pdev->dev);
+
+	return ret;
 }
 
 static struct platform_driver video_cc_sm8150_driver = {
-- 
2.25.1

On 11/18/23 13:39, Satya Priya Kakitapalli wrote:
> Add runtime PM support to ensure the supply rails are enabled
> when necessary.
> 
> Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
> ---
> Changes since v1:
>   - None.
> 
>   drivers/clk/qcom/videocc-sm8150.c | 20 ++++++++++++++++++--
>   1 file changed, 18 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/qcom/videocc-sm8150.c b/drivers/clk/qcom/videocc-sm8150.c
> index 52a9a453a143..b57df5ff96c4 100644
> --- a/drivers/clk/qcom/videocc-sm8150.c
> +++ b/drivers/clk/qcom/videocc-sm8150.c
> @@ -6,6 +6,7 @@
>   #include <linux/clk-provider.h>
>   #include <linux/module.h>
>   #include <linux/platform_device.h>
> +#include <linux/pm_runtime.h>
>   #include <linux/regmap.h>
>   
>   #include <dt-bindings/clock/qcom,videocc-sm8150.h>
> @@ -240,17 +241,32 @@ MODULE_DEVICE_TABLE(of, video_cc_sm8150_match_table);
>   static int video_cc_sm8150_probe(struct platform_device *pdev)
>   {
>   	struct regmap *regmap;
> +	int ret;
> +
> +	ret = devm_pm_runtime_enable(&pdev->dev);
> +	if (ret)
> +		return ret;
> +
> +	ret = pm_runtime_resume_and_get(&pdev->dev);
> +	if (ret)
> +		return ret;
>   
>   	regmap = qcom_cc_map(pdev, &video_cc_sm8150_desc);
> -	if (IS_ERR(regmap))
> +	if (IS_ERR(regmap)) {
> +		pm_runtime_put(&pdev->dev);
Shouldn't this be _sync?

Konrad

On 11/23/2023 1:31 AM, Konrad Dybcio wrote:
>
>
> On 11/18/23 13:39, Satya Priya Kakitapalli wrote:
>> Add runtime PM support to ensure the supply rails are enabled
>> when necessary.
>>
>> Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@quicinc.com>
>> ---
>> Changes since v1:
>>   - None.
>>
>>   drivers/clk/qcom/videocc-sm8150.c | 20 ++++++++++++++++++--
>>   1 file changed, 18 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/clk/qcom/videocc-sm8150.c 
>> b/drivers/clk/qcom/videocc-sm8150.c
>> index 52a9a453a143..b57df5ff96c4 100644
>> --- a/drivers/clk/qcom/videocc-sm8150.c
>> +++ b/drivers/clk/qcom/videocc-sm8150.c
>> @@ -6,6 +6,7 @@
>>   #include <linux/clk-provider.h>
>>   #include <linux/module.h>
>>   #include <linux/platform_device.h>
>> +#include <linux/pm_runtime.h>
>>   #include <linux/regmap.h>
>>     #include <dt-bindings/clock/qcom,videocc-sm8150.h>
>> @@ -240,17 +241,32 @@ MODULE_DEVICE_TABLE(of, 
>> video_cc_sm8150_match_table);
>>   static int video_cc_sm8150_probe(struct platform_device *pdev)
>>   {
>>       struct regmap *regmap;
>> +    int ret;
>> +
>> +    ret = devm_pm_runtime_enable(&pdev->dev);
>> +    if (ret)
>> +        return ret;
>> +
>> +    ret = pm_runtime_resume_and_get(&pdev->dev);
>> +    if (ret)
>> +        return ret;
>>         regmap = qcom_cc_map(pdev, &video_cc_sm8150_desc);
>> -    if (IS_ERR(regmap))
>> +    if (IS_ERR(regmap)) {
>> +        pm_runtime_put(&pdev->dev);
> Shouldn't this be _sync?
>

Yes, will update it on v2


> Konrad