bf6a36e0b3bff8f93fa46049ae7f0f626e299f929a75b0c1458e182d.patch

From 916aabed348470931fac919791bcb316e0c30a2e Mon Sep 17 00:00:00 2001
From: Kiran K <kiran.k@intel.com>
Date: Tue, 7 Sep 2021 15:42:39 +0530
Subject: [PATCH] BACKPORT: FROMGIT: Bluetooth: btintel: Read supported offload
 use cases

Read offload use cases supported by controller.

Signed-off-by: Kiran K <kiran.k@intel.com>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

(cherry picked from commit a358ef86da458a12e28edacfff5b7f145f888a93
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
master)

BUG=b:183594508
TEST=build

Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Signed-off-by: Michael Sun <michaelfsun@google.com>

Change-Id: I4f889df0c829adfb886986f413ab4d657dfa044c
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3146657
Reviewed-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Tested-by: Michael Sun <michaelfsun@google.com>
Commit-Queue: Michael Sun <michaelfsun@google.com>
---
 drivers/bluetooth/btintel.c | 32 ++++++++++++++++++++++++++++++++
 drivers/bluetooth/btintel.h |  5 +++++
 2 files changed, 37 insertions(+)

diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -2163,6 +2163,35 @@ static int btintel_prepare_fw_download_tlv(struct hci_dev *hdev,
 	return err;
 }
 
+static int btintel_configure_offload(struct hci_dev *hdev)
+{
+	struct sk_buff *skb;
+	int err = 0;
+	struct intel_offload_use_cases *use_cases;
+
+	skb = __hci_cmd_sync(hdev, 0xfc86, 0, NULL, HCI_INIT_TIMEOUT);
+	if (IS_ERR(skb)) {
+		bt_dev_err(hdev, "Reading offload use cases failed (%ld)",
+			   PTR_ERR(skb));
+		return PTR_ERR(skb);
+	}
+
+	if (skb->len < sizeof(*use_cases)) {
+		err = -EIO;
+		goto error;
+	}
+
+	use_cases = (void *)skb->data;
+
+	if (use_cases->status) {
+		err = -bt_to_errno(skb->data[0]);
+		goto error;
+	}
+error:
+	kfree_skb(skb);
+	return err;
+}
+
 static int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
 					struct intel_version_tlv *ver)
 {
@@ -2204,6 +2233,9 @@ static int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
 	 */
 	btintel_load_ddc_config(hdev, ddcname);
 
+	/* Read supported use cases and set callbacks to fetch datapath id */
+	btintel_configure_offload(hdev);
+
 	btintel_clear_flag(hdev, HCI_QUALITY_REPORT);
 
 	/* Read the Intel version information after loading the FW  */
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -132,6 +132,11 @@ struct intel_debug_features {
 	__u8    page1[16];
 } __packed;
 
+struct intel_offload_use_cases {
+	__u8	status;
+	__u8	preset[8];
+} __packed;
+
 #define INTEL_HW_PLATFORM(cnvx_bt)	((u8)(((cnvx_bt) & 0x0000ff00) >> 8))
 #define INTEL_HW_VARIANT(cnvx_bt)	((u8)(((cnvx_bt) & 0x003f0000) >> 16))
 #define INTEL_CNVX_TOP_TYPE(cnvx_top)	((cnvx_top) & 0x00000fff)
-- 
2.33.0.882.g93a45727a2-goog