linux-kernel - Re: [PATCH v3 1/2] Bluetooth: btrtl: Add support for RTL8822C hci

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Message-ID: <20220119090140.GA24@4f18b3450899>
Date:   Wed, 19 Jan 2022 09:01:40 +0000
From:   Rudi Heitbaum <rudi@...tbaum.com>
To:     Vyacheslav Bocharov <adeep@...ina.in>
Cc:     marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] Bluetooth: btrtl: Add support for RTL8822C
 hci_ver 0x08

On Wed, Oct 27, 2021 at 12:14:15PM +0300, Vyacheslav Bocharov wrote:
> Add detection of RTL8822CS controller with hci_ver = 0x08
> 
> Signed-off-by: Vyacheslav Bocharov <adeep@...ina.in>
> ---
>  drivers/bluetooth/btrtl.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
> index c2bdd1e6060e..38d547cc6fcd 100644
> --- a/drivers/bluetooth/btrtl.c
> +++ b/drivers/bluetooth/btrtl.c
> @@ -156,6 +156,13 @@ static const struct id_table ic_id_table[] = {
>  	  .fw_name  = "rtl_bt/rtl8822cs_fw.bin",
>  	  .cfg_name = "rtl_bt/rtl8822cs_config" },
>  
> +	/* 8822C with UART interface */
> +	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART),
> +	  .config_needed = true,
> +	  .has_rom_version = true,
> +	  .fw_name  = "rtl_bt/rtl8822cs_fw.bin",
> +	  .cfg_name = "rtl_bt/rtl8822cs_config" },
> +
>  	/* 8822C with USB interface */
>  	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB),
>  	  .config_needed = false,

Hi Vyacheslav,

Could I make a suggestion rebasing this patch against 5.16 and putting 
the UART hci ver 0008 berore 000a

this has been tested on Tanix TX6.

Before:

[   11.512883] Bluetooth: hci0: RTL: examining hci_ver=08 hci_rev=000c lmp_ver=08 lmp_subver=8822
[   11.512940] Bluetooth: hci0: RTL: unknown IC info, lmp subver 8822, hci rev 000c, hci ver 0008
[   11.512957] Bluetooth: hci0: RTL: no config loaded

After:

[   12.642167] Bluetooth: hci0: RTL: examining hci_ver=08 hci_rev=000c lmp_ver=08 lmp_subver=8822
[   12.671911] Bluetooth: hci0: RTL: rom_version status=0 version=3
[   12.671961] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cs_fw.bin
[   12.706248] Bluetooth: hci0: RTL: loading rtl_bt/rtl8822cs_config.bin
[   12.730251] Bluetooth: hci0: RTL: cfg_sz 33, total sz 40737
[   13.318832] Bluetooth: hci0: RTL: fw version 0x05a91a4a

Tested-by: Rudi Heitbaum <rudi@...tbaum.com>

---
 drivers/bluetooth/btrtl.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c
--- a/drivers/bluetooth/btrtl.c	2022-01-09 22:55:34.000000000 +0000
+++ b/drivers/bluetooth/btrtl.c	2022-01-15 07:12:21.102080089 +0000
@@ -148,7 +148,15 @@
 	  .fw_name  = "rtl_bt/rtl8761bu_fw.bin",
 	  .cfg_name = "rtl_bt/rtl8761bu_config" },
 
+ 	/* 8822C (hci ver 0008) with UART interface */
+	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART),
+	  .config_needed = true,
+	  .has_rom_version = true,
+	  .has_msft_ext = true,
+	  .fw_name  = "rtl_bt/rtl8822cs_fw.bin",
+	  .cfg_name = "rtl_bt/rtl8822cs_config" },
+
-	/* 8822C with UART interface */
+	/* 8822C (hci ver 000a) with UART interface */
 	{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART),
 	  .config_needed = true,
 	  .has_rom_version = true,
--
2.25.1