Hi Ankit,
> Add the definitions for LE read transmit power HCI commands to
> read the minimum and maximum Tx power.
>
> Signed-off-by: Ankit Navik <ankit.p.navik@xxxxxxxxx>
> ---
> include/net/bluetooth/hci.h | 7 +++++++
> include/net/bluetooth/hci_core.h | 3 +++
> net/bluetooth/hci_event.c | 17 +++++++++++++++++
> 3 files changed, 27 insertions(+)
>
> diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
> index 07b6ece..eccb6b2 100644
> --- a/include/net/bluetooth/hci.h
> +++ b/include/net/bluetooth/hci.h
> @@ -1718,6 +1718,13 @@ struct hci_cp_le_set_adv_set_rand_addr {
> bdaddr_t bdaddr;
> } __packed;
>
> +#define HCI_OP_LE_READ_TX_POWER 0x204b
> +struct hci_rp_le_read_tx_power {
> + __u8 status;
> + __s8 min_tx_power;
> + __s8 max_tx_power;
> +} __packed;
> +
> /* ---- HCI Events ---- */
> #define HCI_EV_INQUIRY_COMPLETE 0x01
>
> diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
> index faebe38..f3d389d 100644
> --- a/include/net/bluetooth/hci_core.h
> +++ b/include/net/bluetooth/hci_core.h
> @@ -418,6 +418,9 @@ struct hci_dev {
> __u8 scan_rsp_data[HCI_MAX_AD_LENGTH];
> __u8 scan_rsp_data_len;
>
> + __s8 le_min_tx_power;
> + __s8 le_max_tx_power;
> +
> struct list_head adv_instances;
> unsigned int adv_instance_cnt;
> __u8 cur_adv_instance;
> diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
> index 6ddc4a7..3646f77 100644
> --- a/net/bluetooth/hci_event.c
> +++ b/net/bluetooth/hci_event.c
> @@ -988,6 +988,19 @@ static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev,
> hdev->adv_tx_power = rp->tx_power;
> }
>
> +static void hci_cc_le_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb)
> +{
> + struct hci_rp_le_read_tx_power *rp = (void *) skb->data;
> +
> + BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
> +
> + if (rp->status)
> + return;
> +
> + hdev->le_min_tx_power = rp->min_tx_power;
> + hdev->le_max_tx_power = rp->max_tx_power;
> +}
> +
> static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb)
> {
> struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
> @@ -3414,6 +3427,10 @@ static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb,
> hci_cc_le_read_max_data_len(hdev, skb);
> break;
>
> + case HCI_OP_LE_READ_TX_POWER:
> + hci_cc_le_read_tx_power(hdev, skb);
> + break;
> +
> case HCI_OP_WRITE_LE_HOST_SUPPORTED:
> hci_cc_write_le_host_supported(hdev, skb);
> break;
by itself this addition is useless. You also need to send the HCI_OP_LE_READ_TX_POWER during the power on of the controller. Please add that part.
And on the controller creation you need to the default le_{min,max}_tx_power fields to invalid.
Regards
Marcel
