Subject: [RFC] [PATCH v2 13/13] wifi: ath12k: bind to QRTR endpoint ID in ath12k_qmi_init_service

From: Mihai Moldovan <[email-masked]>
Date: Mon, 25 Nov 2024 04:50:28 +0100

If possible, fetch the QRTR endpoint ID in ath12k_qmi_init_service, just
before calling qmi_handle_init, and make it available in the qmi_handle.

qmi_helpers will then automatically bind to this endpoint for us.

This finally allows using multiple ath12k-based cards with the same QRTR
node/port combination to work simultanenous (and, for that matter, at
all), including combinations of ath11k-based and ath12k-based cards.

Signed-off-by: Mihai Moldovan <[email-masked]>
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
---
 drivers/net/wireless/ath/ath12k/qmi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index d2d9d03c7a28..a96bad490b10 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -9,8 +9,10 @@
 #include "qmi.h"
 #include "core.h"
 #include "debug.h"
+#include "hif.h"
 #include <linux/of.h>
 #include <linux/firmware.h>
+#include <net/sock.h>
 
 #define SLEEP_CLOCK_SELECT_INTERNAL_BIT	0x02
 #define HOST_CSTATE_BIT			0x04
@@ -3371,6 +3373,13 @@ int ath12k_qmi_init_service(struct ath12k_base *ab)
 	ab->qmi.ab = ab;
 
 	ab->qmi.target_mem_mode = ATH12K_QMI_TARGET_MEM_MODE_DEFAULT;
+
+	ret = ath12k_hif_set_qrtr_endpoint_id(ab);
+	if (ret) {
+		ath12k_warn(ab, "failed to set QRTR endpoint ID: %d\n", ret);
+		ath12k_warn(ab, "only one device per system will be supported\n");
+	}
+
 	ret = qmi_handle_init(&ab->qmi.handle, ATH12K_QMI_RESP_LEN_MAX,
 			      &ath12k_qmi_ops, ath12k_qmi_msg_handlers);
 	if (ret < 0) {
-- 
2.45.2