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authorChethan T N <chethan.tumkur.narayan@intel.com>2020-06-08 17:57:46 +0530
committerMarcel Holtmann <marcel@holtmann.org>2020-06-10 06:51:49 +0200
commitd74abe2138b39ae34c274f5ba5dec47408036c0b (patch)
treed56ff5df970ec83094dc8a70b2b0a62d2a441baa /drivers/bluetooth
parentf98aa80ff78c34fe328eb9cd3e2cc3058e42bcfd (diff)
Bluetooth: btusb: Add support to read Intel debug feature
The command shall read the Intel controller supported debug feature. Based on the supported features additional debug configuration shall be enabled. Signed-off-by: Chethan T N <chethan.tumkur.narayan@intel.com> Signed-off-by: Ps AyappadasX <AyappadasX.Ps@intel.com> Signed-off-by: Kiran K <kiran.k@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
-rw-r--r--drivers/bluetooth/btintel.c32
-rw-r--r--drivers/bluetooth/btintel.h15
-rw-r--r--drivers/bluetooth/btusb.c6
3 files changed, 53 insertions, 0 deletions
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index 6a0e2c5a8beb..105ab28836b8 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -754,6 +754,38 @@ void btintel_reset_to_bootloader(struct hci_dev *hdev)
}
EXPORT_SYMBOL_GPL(btintel_reset_to_bootloader);
+int btintel_read_debug_features(struct hci_dev *hdev,
+ struct intel_debug_features *features)
+{
+ struct sk_buff *skb;
+ u8 page_no = 1;
+
+ /* Intel controller supports two pages, each page is of 128-bit
+ * feature bit mask. And each bit defines specific feature support
+ */
+ skb = __hci_cmd_sync(hdev, 0xfca6, sizeof(page_no), &page_no,
+ HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_err(hdev, "Reading supported features failed (%ld)",
+ PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ if (skb->len != (sizeof(features->page1) + 3)) {
+ bt_dev_err(hdev, "Supported features event size mismatch");
+ kfree_skb(skb);
+ return -EILSEQ;
+ }
+
+ memcpy(features->page1, skb->data + 3, sizeof(features->page1));
+
+ /* Read the supported features page2 if required in future.
+ */
+ kfree_skb(skb);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(btintel_read_debug_features);
+
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
MODULE_VERSION(VERSION);
diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h
index a69ea8a87b9b..7cd813fc5db4 100644
--- a/drivers/bluetooth/btintel.h
+++ b/drivers/bluetooth/btintel.h
@@ -62,6 +62,10 @@ struct intel_reset {
__le32 boot_param;
} __packed;
+struct intel_debug_features {
+ __u8 page1[16];
+} __packed;
+
#if IS_ENABLED(CONFIG_BT_INTEL)
int btintel_check_bdaddr(struct hci_dev *hdev);
@@ -88,6 +92,10 @@ int btintel_read_boot_params(struct hci_dev *hdev,
int btintel_download_firmware(struct hci_dev *dev, const struct firmware *fw,
u32 *boot_param);
void btintel_reset_to_bootloader(struct hci_dev *hdev);
+
+int btintel_read_debug_features(struct hci_dev *hdev,
+ struct intel_debug_features *features);
+
#else
static inline int btintel_check_bdaddr(struct hci_dev *hdev)
@@ -186,4 +194,11 @@ static inline int btintel_download_firmware(struct hci_dev *dev,
static inline void btintel_reset_to_bootloader(struct hci_dev *hdev)
{
}
+
+static inline int btintel_read_debug_features(struct hci_dev *hdev,
+ struct intel_debug_features *features)
+{
+ return -EOPNOTSUPP;
+}
+
#endif
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 5f022e9cf667..e12d88e19098 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -2267,6 +2267,7 @@ static int btusb_setup_intel_new(struct hci_dev *hdev)
struct btusb_data *data = hci_get_drvdata(hdev);
struct intel_version ver;
struct intel_boot_params params;
+ struct intel_debug_features features;
const struct firmware *fw;
u32 boot_param;
char fwname[64];
@@ -2542,6 +2543,11 @@ done:
*/
btintel_load_ddc_config(hdev, fwname);
+ /* Read the Intel supported features and if new exception formats
+ * supported, need to load the additional DDC config to enable.
+ */
+ btintel_read_debug_features(hdev, &features);
+
/* Read the Intel version information after loading the FW */
err = btintel_read_version(hdev, &ver);
if (err)