Messages in this thread Patch in this message | | | From | Bjorn Andersson <> | Subject | [PATCH v2] thermal: qcom: tsens: Allow number of sensors to come from DT | Date | Sat, 2 Jun 2018 12:32:11 -0700 |
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For platforms that has multiple copies of the TSENS hardware block it's convenient to specify the number of sensors per block in DeviceTree.
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> [binding] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> ---
Changes since v1: - Added comment as suggested by Amit - Picked up Amit and Rob's R-b
.../devicetree/bindings/thermal/qcom-tsens.txt | 1 + drivers/thermal/qcom/tsens.c | 13 ++++++++++--- 2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt index 292ed89d900b..06195e8f35e2 100644 --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt @@ -8,6 +8,7 @@ Required properties: - reg: Address range of the thermal registers - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description. +- #qcom,sensors: Number of sensors in tsens block - Refer to Documentation/devicetree/bindings/nvmem/nvmem.txt to know how to specify nvmem cells diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c index 3f9fe6aa51cc..b212bebcfc36 100644 --- a/drivers/thermal/qcom/tsens.c +++ b/drivers/thermal/qcom/tsens.c @@ -116,6 +116,7 @@ static int tsens_probe(struct platform_device *pdev) struct tsens_device *tmdev; const struct tsens_data *data; const struct of_device_id *id; + u32 num_sensors; if (pdev->dev.of_node) dev = &pdev->dev; @@ -130,18 +131,24 @@ static int tsens_probe(struct platform_device *pdev) else data = &data_8960; - if (data->num_sensors <= 0) { + num_sensors = data->num_sensors; + + /* Override driver provided num_sensors, if specified in DT */ + if (np) + of_property_read_u32(np, "#qcom,sensors", &num_sensors); + + if (num_sensors <= 0) { dev_err(dev, "invalid number of sensors\n"); return -EINVAL; } tmdev = devm_kzalloc(dev, sizeof(*tmdev) + - data->num_sensors * sizeof(*s), GFP_KERNEL); + num_sensors * sizeof(*s), GFP_KERNEL); if (!tmdev) return -ENOMEM; tmdev->dev = dev; - tmdev->num_sensors = data->num_sensors; + tmdev->num_sensors = num_sensors; tmdev->ops = data->ops; for (i = 0; i < tmdev->num_sensors; i++) { if (data->hw_ids) -- 2.17.0
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