linux-kernel - [PATCH 2/3] Bluetooth: btrtl: Add support for RTL8822BS UART

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Message-Id: <20230514074731.70614-3-rudi@heitbaum.com>
Date:   Sun, 14 May 2023 07:47:30 +0000
From:   Rudi Heitbaum <rudi@...tbaum.com>
To:     davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        wens@...e.org, jernej.skrabec@...il.com, samuel@...lland.org,
        marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
        anarsoul@...il.com, alistair@...stair23.me
Cc:     netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-bluetooth@...r.kernel.org,
        Rudi Heitbaum <rudi@...tbaum.com>
Subject: [PATCH 2/3] Bluetooth: btrtl: Add support for RTL8822BS UART

Add a RTL8822BS UART with hci_ver = 0x07. This is similar to RTL8822CS
observed on the Tanix TX6 Android set-top box. But the previous
generation of chip. The RTL8822BS requires the
BROKEN_LOCAL_EXT_FEATURES_PAGE_2 quirk.

Signed-off-by: Rudi Heitbaum <rudi@...tbaum.com>
---
 drivers/bluetooth/btrtl.c  | 12 +++++++++++-
 drivers/bluetooth/hci_h5.c |  6 ++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
index 2915c82d719d..b53a4ef88550 100644
--- a/drivers/bluetooth/btrtl.c
+++ b/drivers/bluetooth/btrtl.c
@@ -234,7 +234,15 @@ static const struct id_table ic_id_table[] = {
 	  .fw_name  = "rtl_bt/rtl8822cu_fw.bin",
 	  .cfg_name = "rtl_bt/rtl8822cu_config" },
 
-	/* 8822B */
+	/* 8822BS with UART interface */
+	{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_UART),
+	  .config_needed = true,
+	  .has_rom_version = true,
+	  .has_msft_ext = true,
+	  .fw_name  = "rtl_bt/rtl8822bs_fw.bin",
+	  .cfg_name = "rtl_bt/rtl8822bs_config" },
+
+	/* 8822BU with USB interface */
 	{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB),
 	  .config_needed = true,
 	  .has_rom_version = true,
@@ -1182,6 +1190,8 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
 
 		hci_set_aosp_capable(hdev);
 		break;
+	case CHIP_ID_8822B:
+		set_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, &hdev->quirks);
 	default:
 		rtl_dev_dbg(hdev, "Central-peripheral role not enabled.");
 		rtl_dev_dbg(hdev, "WBS supported not enabled.");
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index fefc37b98b4a..726b6c7e28b8 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -1072,6 +1072,10 @@ static struct h5_vnd rtl_vnd = {
 	.acpi_gpio_map	= acpi_btrtl_gpios,
 };
 
+static const struct h5_device_data h5_data_rtl8822bs = {
+	.vnd = &rtl_vnd,
+};
+
 static const struct h5_device_data h5_data_rtl8822cs = {
 	.vnd = &rtl_vnd,
 };
@@ -1100,6 +1104,8 @@ static const struct dev_pm_ops h5_serdev_pm_ops = {
 
 static const struct of_device_id rtl_bluetooth_of_match[] = {
 #ifdef CONFIG_BT_HCIUART_RTL
+	{ .compatible = "realtek,rtl8822bs-bt",
+	  .data = (const void *)&h5_data_rtl8822bs },
 	{ .compatible = "realtek,rtl8822cs-bt",
 	  .data = (const void *)&h5_data_rtl8822cs },
 	{ .compatible = "realtek,rtl8723bs-bt",
-- 
2.25.1