linux-kernel - [PATCH] Bluetooth: hci_qca: Enable WBS support for wcn3991

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Date:   Wed, 13 May 2020 20:41:25 -0700
From:   Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
To:     linux-bluetooth@...r.kernel.org, bgodavar@...eaurora.org
Cc:     alainm@...omium.org, marcel@...tmann.org, mka@...omium.org,
        chromeos-bluetooth-upstreaming@...omium.org,
        Abhishek Pandit-Subedi <abhishekpandit@...omium.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] Bluetooth: hci_qca: Enable WBS support for wcn3991

WCN3991 supports transparent WBS (host encoded mSBC). Add a flag to the
device match data to show WBS is supported.

This requires the matching firmware for WCN3991 in linux-firmware:
        1a8b0dc00f77 (qca: Enable transparent WBS for WCN3991)

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org>
---

 drivers/bluetooth/hci_qca.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index b3fd07a6f8127..305976c4dcf42 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -75,6 +75,9 @@ enum qca_flags {
 	QCA_HW_ERROR_EVENT
 };
 
+enum qca_driver_flags {
+	QCA_DRV_WIDEBAND_SPEECH_SUPPORTED = 0x1,
+};
 
 /* HCI_IBS transmit side sleep protocol states */
 enum tx_ibs_states {
@@ -187,10 +190,11 @@ struct qca_vreg {
 	unsigned int load_uA;
 };
 
-struct qca_vreg_data {
+struct qca_device_data {
 	enum qca_btsoc_type soc_type;
 	struct qca_vreg *vregs;
 	size_t num_vregs;
+	uint32_t flags;
 };
 
 /*
@@ -1691,7 +1695,7 @@ static const struct hci_uart_proto qca_proto = {
 	.dequeue	= qca_dequeue,
 };
 
-static const struct qca_vreg_data qca_soc_data_wcn3990 = {
+static const struct qca_device_data qca_soc_data_wcn3990 = {
 	.soc_type = QCA_WCN3990,
 	.vregs = (struct qca_vreg []) {
 		{ "vddio", 15000  },
@@ -1702,7 +1706,7 @@ static const struct qca_vreg_data qca_soc_data_wcn3990 = {
 	.num_vregs = 4,
 };
 
-static const struct qca_vreg_data qca_soc_data_wcn3991 = {
+static const struct qca_device_data qca_soc_data_wcn3991 = {
 	.soc_type = QCA_WCN3991,
 	.vregs = (struct qca_vreg []) {
 		{ "vddio", 15000  },
@@ -1711,9 +1715,10 @@ static const struct qca_vreg_data qca_soc_data_wcn3991 = {
 		{ "vddch0", 450000 },
 	},
 	.num_vregs = 4,
+	.flags = QCA_DRV_WIDEBAND_SPEECH_SUPPORTED,
 };
 
-static const struct qca_vreg_data qca_soc_data_wcn3998 = {
+static const struct qca_device_data qca_soc_data_wcn3998 = {
 	.soc_type = QCA_WCN3998,
 	.vregs = (struct qca_vreg []) {
 		{ "vddio", 10000  },
@@ -1724,7 +1729,7 @@ static const struct qca_vreg_data qca_soc_data_wcn3998 = {
 	.num_vregs = 4,
 };
 
-static const struct qca_vreg_data qca_soc_data_qca6390 = {
+static const struct qca_device_data qca_soc_data_qca6390 = {
 	.soc_type = QCA_QCA6390,
 	.num_vregs = 0,
 };
@@ -1860,7 +1865,7 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 {
 	struct qca_serdev *qcadev;
 	struct hci_dev *hdev;
-	const struct qca_vreg_data *data;
+	const struct qca_device_data *data;
 	int err;
 	bool power_ctrl_enabled = true;
 
@@ -1948,6 +1953,12 @@ static int qca_serdev_probe(struct serdev_device *serdev)
 		hdev->shutdown = qca_power_off;
 	}
 
+	/* Wideband speech support must be set per driver since it can't be
+	 * queried via hci.
+	 */
+	if (data && (data->flags & QCA_DRV_WIDEBAND_SPEECH_SUPPORTED))
+		set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
+
 	return 0;
 }
 
-- 
2.26.2.761.g0e0b3e54be-goog