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Bluetooth: btqca: inject command complete event during fw download

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Latest qualcomm chips are not sending an command complete event for
every firmware packet sent to chip. They only respond with a vendor
specific event for the last firmware packet. This optimization will
decrease the BT ON time. Due to this we are seeing a timeout error
message logs on the console during firmware download. Now we are
injecting a command complete event once we receive an vendor specific
event for the last RAM firmware packet.

Signed-off-by: Balakrishna Godavarthi <bgodavar@codeaurora.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Balakrishna Godavarthi 2019-05-28 14:43:22 -07:00 committed by Marcel Holtmann
parent 82b7d85664
commit 32646db8cc
2 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/bluetooth/btqca.c
View File

@ -131,6 +131,7 @@ static void qca_tlv_check_data(struct rome_config *config,
* In case VSE is skipped, only the last segment is acked.
*/
config->dnld_mode = tlv_patch->download_mode;
config->dnld_type = config->dnld_mode;
BT_DBG("Total Length : %d bytes",
le32_to_cpu(tlv_patch->total_size));
@ -251,6 +252,31 @@ out:
return err;
}
static int qca_inject_cmd_complete_event(struct hci_dev *hdev)
{
struct hci_event_hdr *hdr;
struct hci_ev_cmd_complete *evt;
struct sk_buff *skb;
skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
if (!skb)
return -ENOMEM;
hdr = skb_put(skb, sizeof(*hdr));
hdr->evt = HCI_EV_CMD_COMPLETE;
hdr->plen = sizeof(*evt) + 1;
evt = skb_put(skb, sizeof(*evt));
evt->ncmd = 1;
evt->opcode = QCA_HCI_CC_OPCODE;
skb_put_u8(skb, QCA_HCI_CC_SUCCESS);
hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
return hci_recv_frame(hdev, skb);
}
static int qca_download_firmware(struct hci_dev *hdev,
struct rome_config *config)
{
@ -284,11 +310,22 @@ static int qca_download_firmware(struct hci_dev *hdev,
ret = qca_tlv_send_segment(hdev, segsize, segment,
config->dnld_mode);
if (ret)
break;
goto out;
segment += segsize;
}
/* Latest qualcomm chipsets are not sending a command complete event
* for every fw packet sent. They only respond with a vendor specific
* event for the last packet. This optimization in the chip will
* decrease the BT in initialization time. Here we will inject a command
* complete event to avoid a command timeout error message.
*/
if (config->dnld_type == ROME_SKIP_EVT_VSE_CC ||
config->dnld_type == ROME_SKIP_EVT_VSE)
return qca_inject_cmd_complete_event(hdev);
out:
release_firmware(fw);
return ret;

4
drivers/bluetooth/btqca.h
View File

@ -28,6 +28,9 @@
#define QCA_WCN3990_POWERON_PULSE 0xFC
#define QCA_WCN3990_POWEROFF_PULSE 0xC0
#define QCA_HCI_CC_OPCODE 0xFC00
#define QCA_HCI_CC_SUCCESS 0x00
enum qca_baudrate {
QCA_BAUDRATE_115200 = 0,
QCA_BAUDRATE_57600,
@ -69,6 +72,7 @@ struct rome_config {
char fwname[64];
uint8_t user_baud_rate;
enum rome_tlv_dnld_mode dnld_mode;
enum rome_tlv_dnld_mode dnld_type;
};
struct edl_event_hdr {