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[4/5] soc: qcom: geni-se: Allow any combination of icc paths

Message ID 20230703-topic-8250_qup_icc-v1-4-fea39aa07525@linaro.org
State New
Headers
Series Add interconnects to QUPs on SM8250 |

Commit Message

Konrad Dybcio July 3, 2023, 1:31 p.m. UTC 
  Not all SoCs provide all the usual paths. By the looks of it, at least
SM8150 and SM8250 don't have one that would resemble "qup-core".

Check for the error that icc_get throws and assign a NULL value to each
path that can't be found to effectively allow any combination of icc paths
(which, like previously, includes no icc paths). The ICC APIs gracefully
handle a NULL path by exiting early.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/soc/qcom/qcom-geni-se.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Comments

Dmitry Baryshkov July 3, 2023, 2:31 p.m. UTC | #1 
On 03/07/2023 16:31, Konrad Dybcio wrote:
> Not all SoCs provide all the usual paths. By the looks of it, at least
> SM8150 and SM8250 don't have one that would resemble "qup-core".
> 
> Check for the error that icc_get throws and assign a NULL value to each
> path that can't be found to effectively allow any combination of icc paths
> (which, like previously, includes no icc paths). The ICC APIs gracefully
> handle a NULL path by exiting early.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
>   drivers/soc/qcom/qcom-geni-se.c | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
> index ba788762835f..a5e2e8925c8e 100644
> --- a/drivers/soc/qcom/qcom-geni-se.c
> +++ b/drivers/soc/qcom/qcom-geni-se.c
> @@ -813,8 +813,13 @@ int geni_icc_get(struct geni_se *se, const char *icc_ddr)
>   			continue;
>   
>   		se->icc_paths[i].path = devm_of_icc_get(se->dev, icc_names[i]);

Would it make sense to add (devm_)of_icc_get_optional instead?  I think 
we already have several usecases for such API call

For this patch:

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

> -		if (IS_ERR(se->icc_paths[i].path))
> -			goto err;
> +		if (IS_ERR(se->icc_paths[i].path)) {
> +			/* Not all SoCs implement all the paths */
> +			if (PTR_ERR(se->icc_paths[i].path) == -ENODATA)
> +				se->icc_paths[i].path = NULL;
> +			else
> +				goto err;
> +		}
>   	}
>   
>   	return 0;
>
diff mbox series

Patch

diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c
index ba788762835f..a5e2e8925c8e 100644
--- a/drivers/soc/qcom/qcom-geni-se.c
+++ b/drivers/soc/qcom/qcom-geni-se.c
@@ -813,8 +813,13 @@  int geni_icc_get(struct geni_se *se, const char *icc_ddr)
 			continue;
 
 		se->icc_paths[i].path = devm_of_icc_get(se->dev, icc_names[i]);
-		if (IS_ERR(se->icc_paths[i].path))
-			goto err;
+		if (IS_ERR(se->icc_paths[i].path)) {
+			/* Not all SoCs implement all the paths */
+			if (PTR_ERR(se->icc_paths[i].path) == -ENODATA)
+				se->icc_paths[i].path = NULL;
+			else
+				goto err;
+		}
 	}
 
 	return 0;