diff options
| author | Kiran K <kiraank@gmail.com> | 2020-09-11 14:44:17 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2020-09-13 10:58:22 +0300 |
| commit | e91172151a40d16d978a76159a07ec5c7be5de32 (patch) | |
| tree | 6b15ed12608b2b6d586490d4f745bec71aed36c4 /drivers/bluetooth/btintel.c | |
| parent | 2f20216c1d6fe17c1a224f658be0dc6fab2269c7 (diff) | |
| download | linux-e91172151a40d16d978a76159a07ec5c7be5de32.tar.xz | |
Bluetooth: btintel: Refactor firmware download function
Split firmware download code into two functions - one to download
header and other to download payload. This patch enhances readability
and reusabiltiy of code
Signed-off-by: Kiran K <kiran.k@intel.com>
Reviewed-by: Chethan T N <chethan.tumkur.narayan@intel.com>
Reviewed-by: Sathish Narasimman <Sathish.Narasimman@intel.com>
Reviewed-by: Srivatsa Ravishankar <ravishankar.srivatsa@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btintel.c')
| -rw-r--r-- | drivers/bluetooth/btintel.c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 5fa5be3c5598..dc6f1a99a019 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -19,6 +19,7 @@ #define VERSION "0.1" #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}}) +#define RSA_HEADER_LEN 644 int btintel_check_bdaddr(struct hci_dev *hdev) { @@ -626,12 +627,10 @@ int btintel_read_boot_params(struct hci_dev *hdev, } EXPORT_SYMBOL_GPL(btintel_read_boot_params); -int btintel_download_firmware(struct hci_dev *hdev, const struct firmware *fw, - u32 *boot_param) +static int btintel_sfi_rsa_header_secure_send(struct hci_dev *hdev, + const struct firmware *fw) { int err; - const u8 *fw_ptr; - u32 frag_len; /* Start the firmware download transaction with the Init fragment * represented by the 128 bytes of CSS header. @@ -660,8 +659,21 @@ int btintel_download_firmware(struct hci_dev *hdev, const struct firmware *fw, goto done; } - fw_ptr = fw->data + 644; +done: + return err; +} + +static int btintel_download_firmware_payload(struct hci_dev *hdev, + const struct firmware *fw, + u32 *boot_param, size_t offset) +{ + int err; + const u8 *fw_ptr; + u32 frag_len; + + fw_ptr = fw->data + offset; frag_len = 0; + err = -EINVAL; while (fw_ptr - fw->data < fw->size) { struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len); @@ -707,6 +719,20 @@ int btintel_download_firmware(struct hci_dev *hdev, const struct firmware *fw, done: return err; } + +int btintel_download_firmware(struct hci_dev *hdev, + const struct firmware *fw, + u32 *boot_param) +{ + int err; + + err = btintel_sfi_rsa_header_secure_send(hdev, fw); + if (err) + return err; + + return btintel_download_firmware_payload(hdev, fw, boot_param, + RSA_HEADER_LEN); +} EXPORT_SYMBOL_GPL(btintel_download_firmware); void btintel_reset_to_bootloader(struct hci_dev *hdev) |