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Bluetooth: btintel: Refactor firmware download function

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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>
This commit is contained in:
Kiran K 2020-09-11 17:14:17 +05:30 committed by Marcel Holtmann
parent 2f20216c1d
commit e91172151a
1 changed files with 31 additions and 5 deletions
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36
drivers/bluetooth/btintel.c
View file

@ -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)