From: Max Chou max.chou@realtek.com
In the commit of linux-firmware project, rtl8852cu_fw.bin is updated as FW v2 format[1]. Consider the case that if driver did not be updated for FW v2 supported[2], it can not use FW v2. By Canonical's suggestion, older driver should be able to load FW v1, so rtl8852cu_fw.bin will be revert to the previous commit as FW v1 and add rtl8852cu_fw_v2.bin as FW v2. This item will be started on linux-firmware project.
In this commit, the driver prefers to load FW v2 if available. Fallback to FW v1 otherwise.
Note that the driver has supported to extract the data for v1 and v2 since the commit[1]. The previous FW format of RTL8852C is v1. After the commit[2], the FW format was changed to v2. Only RTL8852C suffered the different FW formats, so we will use rtl8852cu_fw.bin for the original commit as FW v1 and rtl8852cu_fw_v2.bin for the future maintained as FW v2. Other Realtek chips will not been impacted by this patch.
To do on linux-firmware project after this commit. 1. revert '55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")' => rtl_bt/rtl8852cu_fw.bin: FW v1 (stay at ver. 0xD7B8_FABF) 2. Add a new commit for rtl8852cu_fw_v2.bin =>rtl_bt/rtl8852cu_fw_v2.bin: FW v2 (to be maintained)
Reference: [1]'9a24ce5e29b1 ("Bluetooth: btrtl: Firmware format v2 support")' [2]'55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")'
Fixes: '9a24ce5e29b ("Bluetooth: btrtl: Firmware format v2 support")' Suggested-by: Juerg Haefliger juerg.haefliger@canonical.com Tested-by: Hilda Wu hildawu@realtek.com Signed-off-by: Max Chou max.chou@realtek.com
--- Changes in v2: - Fix commit log for CheckPatch FAIL
Changes in v2: - Tuning the code for more readable. Thanks Juerg! - Modify the commit log. --- drivers/bluetooth/btrtl.c | 70 +++++++++++++++++++++++++-------------- 1 file changed, 45 insertions(+), 25 deletions(-)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index ddae6524106d..84c2c2e1122f 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -104,7 +104,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB), .config_needed = false, .has_rom_version = false, - .fw_name = "rtl_bt/rtl8723a_fw.bin", + .fw_name = "rtl_bt/rtl8723a_fw", .cfg_name = NULL, .hw_info = "rtl8723au" },
@@ -112,7 +112,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723bs_fw.bin", + .fw_name = "rtl_bt/rtl8723bs_fw", .cfg_name = "rtl_bt/rtl8723bs_config", .hw_info = "rtl8723bs" },
@@ -120,7 +120,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723b_fw.bin", + .fw_name = "rtl_bt/rtl8723b_fw", .cfg_name = "rtl_bt/rtl8723b_config", .hw_info = "rtl8723bu" },
@@ -132,7 +132,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723cs_cg_fw.bin", + .fw_name = "rtl_bt/rtl8723cs_cg_fw", .cfg_name = "rtl_bt/rtl8723cs_cg_config", .hw_info = "rtl8723cs-cg" },
@@ -144,7 +144,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723cs_vf_fw.bin", + .fw_name = "rtl_bt/rtl8723cs_vf_fw", .cfg_name = "rtl_bt/rtl8723cs_vf_config", .hw_info = "rtl8723cs-vf" },
@@ -156,7 +156,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723cs_xx_fw.bin", + .fw_name = "rtl_bt/rtl8723cs_xx_fw", .cfg_name = "rtl_bt/rtl8723cs_xx_config", .hw_info = "rtl8723cs" },
@@ -164,7 +164,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723d_fw.bin", + .fw_name = "rtl_bt/rtl8723d_fw", .cfg_name = "rtl_bt/rtl8723d_config", .hw_info = "rtl8723du" },
@@ -172,7 +172,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), .config_needed = true, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8723ds_fw.bin", + .fw_name = "rtl_bt/rtl8723ds_fw", .cfg_name = "rtl_bt/rtl8723ds_config", .hw_info = "rtl8723ds" },
@@ -180,7 +180,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8821a_fw.bin", + .fw_name = "rtl_bt/rtl8821a_fw", .cfg_name = "rtl_bt/rtl8821a_config", .hw_info = "rtl8821au" },
@@ -189,7 +189,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8821c_fw.bin", + .fw_name = "rtl_bt/rtl8821c_fw", .cfg_name = "rtl_bt/rtl8821c_config", .hw_info = "rtl8821cu" },
@@ -198,7 +198,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8821cs_fw.bin", + .fw_name = "rtl_bt/rtl8821cs_fw", .cfg_name = "rtl_bt/rtl8821cs_config", .hw_info = "rtl8821cs" },
@@ -206,7 +206,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8761a_fw.bin", + .fw_name = "rtl_bt/rtl8761a_fw", .cfg_name = "rtl_bt/rtl8761a_config", .hw_info = "rtl8761au" },
@@ -215,7 +215,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8761b_fw.bin", + .fw_name = "rtl_bt/rtl8761b_fw", .cfg_name = "rtl_bt/rtl8761b_config", .hw_info = "rtl8761btv" },
@@ -223,7 +223,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), .config_needed = false, .has_rom_version = true, - .fw_name = "rtl_bt/rtl8761bu_fw.bin", + .fw_name = "rtl_bt/rtl8761bu_fw", .cfg_name = "rtl_bt/rtl8761bu_config", .hw_info = "rtl8761bu" },
@@ -232,7 +232,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8822cs_fw.bin", + .fw_name = "rtl_bt/rtl8822cs_fw", .cfg_name = "rtl_bt/rtl8822cs_config", .hw_info = "rtl8822cs" },
@@ -241,7 +241,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8822cs_fw.bin", + .fw_name = "rtl_bt/rtl8822cs_fw", .cfg_name = "rtl_bt/rtl8822cs_config", .hw_info = "rtl8822cs" },
@@ -250,7 +250,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8822cu_fw.bin", + .fw_name = "rtl_bt/rtl8822cu_fw", .cfg_name = "rtl_bt/rtl8822cu_config", .hw_info = "rtl8822cu" },
@@ -259,7 +259,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8822b_fw.bin", + .fw_name = "rtl_bt/rtl8822b_fw", .cfg_name = "rtl_bt/rtl8822b_config", .hw_info = "rtl8822bu" },
@@ -268,7 +268,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8852au_fw.bin", + .fw_name = "rtl_bt/rtl8852au_fw", .cfg_name = "rtl_bt/rtl8852au_config", .hw_info = "rtl8852au" },
@@ -277,7 +277,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8852bs_fw.bin", + .fw_name = "rtl_bt/rtl8852bs_fw", .cfg_name = "rtl_bt/rtl8852bs_config", .hw_info = "rtl8852bs" },
@@ -286,7 +286,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8852bu_fw.bin", + .fw_name = "rtl_bt/rtl8852bu_fw", .cfg_name = "rtl_bt/rtl8852bu_config", .hw_info = "rtl8852bu" },
@@ -295,7 +295,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true, - .fw_name = "rtl_bt/rtl8852cu_fw.bin", + .fw_name = "rtl_bt/rtl8852cu_fw", .cfg_name = "rtl_bt/rtl8852cu_config", .hw_info = "rtl8852cu" },
@@ -304,7 +304,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = false, - .fw_name = "rtl_bt/rtl8851bu_fw.bin", + .fw_name = "rtl_bt/rtl8851bu_fw", .cfg_name = "rtl_bt/rtl8851bu_config", .hw_info = "rtl8851bu" }, }; @@ -1045,6 +1045,7 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, struct sk_buff *skb; struct hci_rp_read_local_version *resp; struct hci_command_hdr *cmd; + char fw_name[40]; char cfg_name[40]; u16 hci_rev, lmp_subver; u8 hci_ver, lmp_ver, chip_type = 0; @@ -1154,8 +1155,26 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, goto err_free; }
- btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name, - &btrtl_dev->fw_data); + if (!btrtl_dev->ic_info->fw_name) { + ret = -ENOMEM; + goto err_free; + } + + btrtl_dev->fw_len = -EIO; + if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) { + snprintf(fw_name, sizeof(fw_name), "%s_v2.bin", + btrtl_dev->ic_info->fw_name); + btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, + &btrtl_dev->fw_data); + } + + if (btrtl_dev->fw_len < 0) { + snprintf(fw_name, sizeof(fw_name), "%s.bin", + btrtl_dev->ic_info->fw_name); + btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, + &btrtl_dev->fw_data); + } + if (btrtl_dev->fw_len < 0) { rtl_dev_err(hdev, "firmware file %s not found", btrtl_dev->ic_info->fw_name); @@ -1491,4 +1510,5 @@ 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/rtl8852cu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin"); MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin");
Hi,
Thanks for your patch.
FYI: kernel test robot notices the stable kernel rule is not satisfied.
Rule: 'Cc: stable@vger.kernel.org' or 'commit <sha1> upstream.' Subject: [PATCH v3] Bluetooth: btrtl: Load FW v2 otherwise FW v1 for RTL8852C Link: https://lore.kernel.org/stable/20230807014415.12358-1-max.chou%40realtek.com
The check is based on https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
On Mon, 7 Aug 2023 09:44:15 +0800 max.chou@realtek.com wrote:
From: Max Chou max.chou@realtek.com
In the commit of linux-firmware project, rtl8852cu_fw.bin is updated as FW v2 format[1]. Consider the case that if driver did not be updated for FW v2 supported[2], it can not use FW v2. By Canonical's suggestion, older driver should be able to load FW v1, so rtl8852cu_fw.bin will be revert to the previous commit as FW v1 and add rtl8852cu_fw_v2.bin as FW v2. This item will be started on linux-firmware project.
In this commit, the driver prefers to load FW v2 if available. Fallback to FW v1 otherwise.
Note that the driver has supported to extract the data for v1 and v2 since the commit[1]. The previous FW format of RTL8852C is v1. After the commit[2], the FW format was changed to v2. Only RTL8852C suffered the different FW formats, so we will use rtl8852cu_fw.bin for the original commit as FW v1 and rtl8852cu_fw_v2.bin for the future maintained as FW v2. Other Realtek chips will not been impacted by this patch.
To do on linux-firmware project after this commit.
- revert '55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")' => rtl_bt/rtl8852cu_fw.bin: FW v1 (stay at ver. 0xD7B8_FABF)
- Add a new commit for rtl8852cu_fw_v2.bin =>rtl_bt/rtl8852cu_fw_v2.bin: FW v2 (to be maintained)
Reference: [1]'9a24ce5e29b1 ("Bluetooth: btrtl: Firmware format v2 support")' [2]'55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")'
IMO this commit message is too confusing. I don't think you need nor should refer to linux-firmware commits and what happened in that repo. This commit simply fixes the v2 support by trying to load a v2 file for certain chips with a fall-back if fw is not found (or failed to load). That's all that needs to be mentioned in the commit message.
Fixes: '9a24ce5e29b ("Bluetooth: btrtl: Firmware format v2 support")'
No '' quotes.
...Juerg
Suggested-by: Juerg Haefliger juerg.haefliger@canonical.com Tested-by: Hilda Wu hildawu@realtek.com Signed-off-by: Max Chou max.chou@realtek.com
Changes in v2:
- Fix commit log for CheckPatch FAIL
Changes in v2:
- Tuning the code for more readable. Thanks Juerg!
- Modify the commit log.
drivers/bluetooth/btrtl.c | 70 +++++++++++++++++++++++++-------------- 1 file changed, 45 insertions(+), 25 deletions(-)
diff --git a/drivers/bluetooth/btrtl.c b/drivers/bluetooth/btrtl.c index ddae6524106d..84c2c2e1122f 100644 --- a/drivers/bluetooth/btrtl.c +++ b/drivers/bluetooth/btrtl.c @@ -104,7 +104,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB), .config_needed = false, .has_rom_version = false,
.fw_name = "rtl_bt/rtl8723a_fw.bin",
.fw_name = "rtl_bt/rtl8723a_fw",@@ -112,7 +112,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723bs_fw.bin",
.fw_name = "rtl_bt/rtl8723bs_fw",@@ -120,7 +120,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723b_fw.bin",
.fw_name = "rtl_bt/rtl8723b_fw",@@ -132,7 +132,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_cg_fw.bin",
.fw_name = "rtl_bt/rtl8723cs_cg_fw",@@ -144,7 +144,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_vf_fw.bin",
.fw_name = "rtl_bt/rtl8723cs_vf_fw",@@ -156,7 +156,7 @@ static const struct id_table ic_id_table[] = { .hci_bus = HCI_UART, .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_xx_fw.bin",
.fw_name = "rtl_bt/rtl8723cs_xx_fw",@@ -164,7 +164,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723d_fw.bin",
.fw_name = "rtl_bt/rtl8723d_fw",@@ -172,7 +172,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), .config_needed = true, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8723ds_fw.bin",
.fw_name = "rtl_bt/rtl8723ds_fw",@@ -180,7 +180,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8821a_fw.bin",
.fw_name = "rtl_bt/rtl8821a_fw",@@ -189,7 +189,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8821c_fw.bin",
.fw_name = "rtl_bt/rtl8821c_fw",@@ -198,7 +198,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8821cs_fw.bin",
.fw_name = "rtl_bt/rtl8821cs_fw",@@ -206,7 +206,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), .config_needed = false, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8761a_fw.bin",
.fw_name = "rtl_bt/rtl8761a_fw",@@ -215,7 +215,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8761b_fw.bin",
.fw_name = "rtl_bt/rtl8761b_fw",@@ -223,7 +223,7 @@ static const struct id_table ic_id_table[] = { { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), .config_needed = false, .has_rom_version = true,
.fw_name = "rtl_bt/rtl8761bu_fw.bin",
.fw_name = "rtl_bt/rtl8761bu_fw",@@ -232,7 +232,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cs_fw.bin",
.fw_name = "rtl_bt/rtl8822cs_fw",@@ -241,7 +241,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cs_fw.bin",
.fw_name = "rtl_bt/rtl8822cs_fw",@@ -250,7 +250,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cu_fw.bin",
.fw_name = "rtl_bt/rtl8822cu_fw",@@ -259,7 +259,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822b_fw.bin",
.fw_name = "rtl_bt/rtl8822b_fw",@@ -268,7 +268,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852au_fw.bin",
.fw_name = "rtl_bt/rtl8852au_fw",@@ -277,7 +277,7 @@ static const struct id_table ic_id_table[] = { .config_needed = true, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852bs_fw.bin",
.fw_name = "rtl_bt/rtl8852bs_fw",@@ -286,7 +286,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852bu_fw.bin",
.fw_name = "rtl_bt/rtl8852bu_fw",@@ -295,7 +295,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852cu_fw.bin",
.fw_name = "rtl_bt/rtl8852cu_fw",@@ -304,7 +304,7 @@ static const struct id_table ic_id_table[] = { .config_needed = false, .has_rom_version = true, .has_msft_ext = false,
.fw_name = "rtl_bt/rtl8851bu_fw.bin",
.fw_name = "rtl_bt/rtl8851bu_fw",@@ -1045,6 +1045,7 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, struct sk_buff *skb; struct hci_rp_read_local_version *resp; struct hci_command_hdr *cmd;
- char fw_name[40]; char cfg_name[40]; u16 hci_rev, lmp_subver; u8 hci_ver, lmp_ver, chip_type = 0;
@@ -1154,8 +1155,26 @@ struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, goto err_free; }
- btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name,
&btrtl_dev->fw_data);
- if (!btrtl_dev->ic_info->fw_name) {
ret = -ENOMEM;goto err_free;- }
- btrtl_dev->fw_len = -EIO;
- if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) {
snprintf(fw_name, sizeof(fw_name), "%s_v2.bin",btrtl_dev->ic_info->fw_name);btrtl_dev->fw_len = rtl_load_file(hdev, fw_name,&btrtl_dev->fw_data);- }
- if (btrtl_dev->fw_len < 0) {
snprintf(fw_name, sizeof(fw_name), "%s.bin",btrtl_dev->ic_info->fw_name);btrtl_dev->fw_len = rtl_load_file(hdev, fw_name,&btrtl_dev->fw_data);- }
- if (btrtl_dev->fw_len < 0) { rtl_dev_err(hdev, "firmware file %s not found", btrtl_dev->ic_info->fw_name);
@@ -1491,4 +1510,5 @@ 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/rtl8852cu_fw.bin"); +MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin"); MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin");
On 07.08.23 12:06, Juerg Haefliger wrote:
On Mon, 7 Aug 2023 09:44:15 +0800 max.chou@realtek.com wrote:
From: Max Chou max.chou@realtek.com
In the commit of linux-firmware project, rtl8852cu_fw.bin is updated as FW v2 format[1]. Consider the case that if driver did not be updated for FW v2 supported[2], it can not use FW v2. By Canonical's suggestion, older driver should be able to load FW v1, so rtl8852cu_fw.bin will be revert to the previous commit as FW v1 and add rtl8852cu_fw_v2.bin as FW v2. This item will be started on linux-firmware project.
In this commit, the driver prefers to load FW v2 if available. Fallback to FW v1 otherwise.
Note that the driver has supported to extract the data for v1 and v2 since the commit[1]. The previous FW format of RTL8852C is v1. After the commit[2], the FW format was changed to v2. Only RTL8852C suffered the different FW formats, so we will use rtl8852cu_fw.bin for the original commit as FW v1 and rtl8852cu_fw_v2.bin for the future maintained as FW v2. Other Realtek chips will not been impacted by this patch.
To do on linux-firmware project after this commit.
- revert '55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")' => rtl_bt/rtl8852cu_fw.bin: FW v1 (stay at ver. 0xD7B8_FABF)
- Add a new commit for rtl8852cu_fw_v2.bin =>rtl_bt/rtl8852cu_fw_v2.bin: FW v2 (to be maintained)
Reference: [1]'9a24ce5e29b1 ("Bluetooth: btrtl: Firmware format v2 support")' [2]'55e7448533e7 ("rtl_bt: Update RTL8852C BT USB firmware to 0x040D_7225")'
IMO this commit message is too confusing. I don't think you need nor should refer to linux-firmware commits and what happened in that repo. This commit simply fixes the v2 support by trying to load a v2 file for certain chips with a fall-back if fw is not found (or failed to load). That's all that needs to be mentioned in the commit message.
/me totally agrees that this in confusing the way it is and needs to be simplified, but explaining things briefly with maybe a Link: to the linux-firmware commit in question might nevertheless be a good idea (YMMV)
Fixes: '9a24ce5e29b ("Bluetooth: btrtl: Firmware format v2 support")'
No '' quotes.
Max Chou, you could have just picked the two tags I mentioned earlier just without the space in front of it[1]. If you do so the 0-day robot will also stop complaining, as you apparently misunderstood what I meant with stable tag; [2] explains this.
Ciao, Thorsten
[1] https://lore.kernel.org/all/f11ba0ef-0bb1-b925-3088-2ba7a8d17393@leemhuis.in... [2] https://docs.kernel.org/process/stable-kernel-rules.html
linux-stable-mirror@lists.linaro.org
-
Juerg Haefliger -
kernel test robot -
Linux regression tracking (Thorsten Leemhuis) -
max.chou＠realtek.com