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soc: qcom: smd-rpm: Match rpmsg channel instead of compatible

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There is an ever growing list of compatibles in the smd-rpm.c driver.
A fallback compatible would help here but would still require keeping
the current list around for backwards compatibility.

As an alternative, let's switch the driver to match the rpmsg_device_id
instead, which is always "rpm_requests" on all platforms. Add a check
to ensure that there is a device tree node defined for the device since
otherwise the of_platform_populate() call will operate on the root node (/).

Similar approaches with matching rpmsg_device_id are already used in
qcom_sysmon, qcom_glink_ssr, qrtr, and rpmsg_wwan_ctrl.

Tested-by: Konrad Dybcio <konrad.dybcio@linaro.org> # SM6375 (G-Link)
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20230531-rpm-rproc-v3-4-a07dcdefd918@gerhold.net
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Stephan Gerhold 2023-06-15 18:50:37 +02:00 committed by Bjorn Andersson
parent 029bf29419
commit bcabe1e091
1 changed files with 9 additions and 26 deletions
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35
drivers/soc/qcom/smd-rpm.c
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@ -199,6 +199,9 @@ static int qcom_smd_rpm_probe(struct rpmsg_device *rpdev)
struct qcom_smd_rpm *rpm; struct qcom_smd_rpm *rpm;
int ret; int ret;
if (!rpdev->dev.of_node)
return -EINVAL;
rpm = devm_kzalloc(&rpdev->dev, sizeof(*rpm), GFP_KERNEL); rpm = devm_kzalloc(&rpdev->dev, sizeof(*rpm), GFP_KERNEL);
if (!rpm) if (!rpm)
return -ENOMEM; return -ENOMEM;
@ -230,38 +233,18 @@ static void qcom_smd_rpm_remove(struct rpmsg_device *rpdev)
of_platform_depopulate(&rpdev->dev); of_platform_depopulate(&rpdev->dev);
} }
static const struct of_device_id qcom_smd_rpm_of_match[] = { static const struct rpmsg_device_id qcom_smd_rpm_id_table[] = {
{ .compatible = "qcom,rpm-apq8084" }, { .name = "rpm_requests", },
{ .compatible = "qcom,rpm-ipq6018" }, { /* sentinel */ }
{ .compatible = "qcom,rpm-ipq9574" },
{ .compatible = "qcom,rpm-msm8226" },
{ .compatible = "qcom,rpm-msm8909" },
{ .compatible = "qcom,rpm-msm8916" },
{ .compatible = "qcom,rpm-msm8936" },
{ .compatible = "qcom,rpm-msm8953" },
{ .compatible = "qcom,rpm-msm8974" },
{ .compatible = "qcom,rpm-msm8976" },
{ .compatible = "qcom,rpm-msm8994" },
{ .compatible = "qcom,rpm-msm8996" },
{ .compatible = "qcom,rpm-msm8998" },
{ .compatible = "qcom,rpm-sdm660" },
{ .compatible = "qcom,rpm-sm6115" },
{ .compatible = "qcom,rpm-sm6125" },
{ .compatible = "qcom,rpm-sm6375" },
{ .compatible = "qcom,rpm-qcm2290" },
{ .compatible = "qcom,rpm-qcs404" },
{}
}; };
MODULE_DEVICE_TABLE(of, qcom_smd_rpm_of_match); MODULE_DEVICE_TABLE(rpmsg, qcom_smd_rpm_id_table);
static struct rpmsg_driver qcom_smd_rpm_driver = { static struct rpmsg_driver qcom_smd_rpm_driver = {
.probe = qcom_smd_rpm_probe, .probe = qcom_smd_rpm_probe,
.remove = qcom_smd_rpm_remove, .remove = qcom_smd_rpm_remove,
.callback = qcom_smd_rpm_callback, .callback = qcom_smd_rpm_callback,
.drv = { .id_table = qcom_smd_rpm_id_table,
.name = "qcom_smd_rpm", .drv.name = "qcom_smd_rpm",
.of_match_table = qcom_smd_rpm_of_match,
},
}; };
static int __init qcom_smd_rpm_init(void) static int __init qcom_smd_rpm_init(void)