RE: [PATCH] Bluetooth: btrtl: Add the support for RTL8852BT/RTL8852BE-VT

[Max Chou <max.chou@realtek.com>]

Hi! Paul,
If the USB VID is 0x0bda, it will be determined to Realtek device as below.
	/* Realtek Bluetooth devices */
	{ USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
	  .driver_info = BTUSB_REALTEK },

In btrtl.c, btrtl_setup_realtek() will judge what the chip is and start the initialization for firmware download.
Hence, PID is not necessary. 
However, I will send the v2 for the ID info. Thanks for the advice.

BRs,
Max

-----Original Message-----
From: Paul Menzel <pmenzel@molgen.mpg.de> 
Sent: Tuesday, December 26, 2023 4:39 PM
To: Max Chou <max.chou@realtek.com>
Cc: marcel@holtmann.org; johan.hedberg@gmail.com; luiz.dentz@gmail.com; linux-bluetooth@vger.kernel.org; linux-kernel@vger.kernel.org; alex_lu@realsil.com.cn; Hilda Wu <hildawu@realtek.com>; Karen Hsu <karenhsu@realtek.com>
Subject: Re: [PATCH] Bluetooth: btrtl: Add the support for RTL8852BT/RTL8852BE-VT


External mail.



Dear Max,


Thank you for your patch.

Am 26.12.23 um 02:57 schrieb max.chou@realtek.com:
> From: Max Chou <max.chou@realtek.com>
>
> Add the support for RTL8852BT/RTL8852BE-VT BT controller on USB interface.

It’d be great if you stated, how it differs from the existing devices.
Judging from your diff, only the ids need to be added.

> The necessary firmware will be submitted to linux-firmware project.
>
> The device info from /sys/kernel/debug/usb/devices as below.
>
> T:  Bus=02 Lev=02 Prnt=02 Port=05 Cnt=01 Dev#=  8 Spd=12   MxCh= 0
> D:  Ver= 1.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
> P:  Vendor=0bda ProdID=8520 Rev= 0.00
> S:  Manufacturer=Realtek
> S:  Product=Bluetooth Radio
> S:  SerialNumber=00e04c000001
> C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
> I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
> E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
> I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
> I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
> I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
> I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
> I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
> I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
> E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
> E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
>
> Signed-off-by: Max Chou <max.chou@realtek.com>
> ---
>   drivers/bluetooth/btrtl.c | 14 ++++++++++++++
>   1 file changed, 14 insertions(+)
>
> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c 
> index 277d039ecbb4..cc50de69e8dc 100644
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@ -69,6 +69,7 @@ enum btrtl_chip_id {
>       CHIP_ID_8852B = 20,
>       CHIP_ID_8852C = 25,
>       CHIP_ID_8851B = 36,
> +     CHIP_ID_8852BT = 47,
>   };
>
>   struct id_table {
> @@ -307,6 +308,15 @@ static const struct id_table ic_id_table[] = {
>         .fw_name  = "rtl_bt/rtl8851bu_fw",
>         .cfg_name = "rtl_bt/rtl8851bu_config",
>         .hw_info  = "rtl8851bu" },
> +
> +     /* 8852BT/8852BE-VT */
> +     { IC_INFO(RTL_ROM_LMP_8852A, 0x87, 0xc, HCI_USB),
> +       .config_needed = false,
> +       .has_rom_version = true,
> +       .has_msft_ext = true,
> +       .fw_name  = "rtl_bt/rtl8852btu_fw",
> +       .cfg_name = "rtl_bt/rtl8852btu_config",
> +       .hw_info  = "rtl8852btu" },
>       };
>
>   static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 
> hci_rev, @@ -645,6 +655,7 @@ static int rtlbt_parse_firmware(struct hci_dev *hdev,
>               { RTL_ROM_LMP_8852A, 20 },      /* 8852B */
>               { RTL_ROM_LMP_8852A, 25 },      /* 8852C */
>               { RTL_ROM_LMP_8851B, 36 },      /* 8851B */
> +             { RTL_ROM_LMP_8852A, 47 },      /* 8852BT */
>       };
>
>       if (btrtl_dev->fw_len <= 8)
> @@ -1275,6 +1286,7 @@ void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
>       case CHIP_ID_8852B:
>       case CHIP_ID_8852C:
>       case CHIP_ID_8851B:
> +     case CHIP_ID_8852BT:
>               set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
>               set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, 
> &hdev->quirks);
>
> @@ -1505,6 +1517,8 @@ MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin");
>   MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin");
>   MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin");
>   MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin");
> +MODULE_FIRMWARE("rtl_bt/rtl8852btu_fw.bin");
> +MODULE_FIRMWARE("rtl_bt/rtl8852btu_config.bin");

Should btu be ordered before bu?

>   MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin");
>   MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin");
>   MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin");


Kind regards,

Paul