soc: qcom: pmic_glink: Add support for SOCCP remoteproc channels

System On Chip Control Processor (SOCCP) is a subsystem that can have
battery management firmware running on it to support Type-C/PD and
battery charging. SOCCP does not have multiple PDs and hence PDR is not
supported. So, if the subsystem comes up/down, rpmsg driver would be
probed or removed. Use that for notifying clients of pmic_glink for
PDR events.

Add support for battery management FW running on SOCCP by adding the
"PMIC_RTR_SOCCP_APPS" channel name to the rpmsg_match list and
updating notify_clients logic.

Signed-off-by: Anjelique Melendez <anjelique.melendez@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250919175025.2988948-1-anjelique.melendez@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c
index c0a4be5df9267d1a2ea439712089f33c3a342300..627f96ca322e16a32263b88ef4e3790870cebc70 100644 (file)
--- a/drivers/soc/qcom/pmic_glink.c
+++ b/drivers/soc/qcom/pmic_glink.c
@@ -39,6 +39,7 @@ struct pmic_glink {
        struct mutex state_lock;
        unsigned int client_state;
        unsigned int pdr_state;
+       bool pdr_available;
 
        /* serializing clients list updates */
        spinlock_t client_lock;
@@ -246,9 +247,12 @@ static int pmic_glink_rpmsg_probe(struct rpmsg_device *rpdev)
                return dev_err_probe(&rpdev->dev, -ENODEV, "no pmic_glink device to attach to\n");
 
        dev_set_drvdata(&rpdev->dev, pg);
+       pg->pdr_available = rpdev->id.driver_data;
 
        guard(mutex)(&pg->state_lock);
        pg->ept = rpdev->ept;
+       if (!pg->pdr_available)
+               pg->pdr_state = SERVREG_SERVICE_STATE_UP;
        pmic_glink_state_notify_clients(pg);
 
        return 0;
@@ -265,11 +269,14 @@ static void pmic_glink_rpmsg_remove(struct rpmsg_device *rpdev)
 
        guard(mutex)(&pg->state_lock);
        pg->ept = NULL;
+       if (!pg->pdr_available)
+               pg->pdr_state = SERVREG_SERVICE_STATE_DOWN;
        pmic_glink_state_notify_clients(pg);
 }
 
 static const struct rpmsg_device_id pmic_glink_rpmsg_id_match[] = {
-       { "PMIC_RTR_ADSP_APPS" },
+       {.name = "PMIC_RTR_ADSP_APPS", .driver_data = true },
+       {.name = "PMIC_RTR_SOCCP_APPS", .driver_data = false },
        {}
 };