Re: [PATCH v2 1/7] android: Add flags parameter to register service command

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Hi Szymon,

> This will allow to configure daemon services.
> ---
> android/hal-a2dp.c      | 1 +
> android/hal-avrcp.c     | 1 +
> android/hal-bluetooth.c | 1 +
> android/hal-handsfree.c | 1 +
> android/hal-hidhost.c   | 1 +
> android/hal-ipc-api.txt | 7 +++++++

please do not mix code with API docs updates.

> android/hal-msg.h       | 1 +
> android/hal-pan.c       | 1 +
> 8 files changed, 14 insertions(+)
> 
> diff --git a/android/hal-a2dp.c b/android/hal-a2dp.c
> index c898995..87d89a2 100644
> --- a/android/hal-a2dp.c
> +++ b/android/hal-a2dp.c
> @@ -109,6 +109,7 @@ static bt_status_t init(btav_callbacks_t *callbacks)
> 				sizeof(ev_handlers)/sizeof(ev_handlers[0]));
> 
> 	cmd.service_id = HAL_SERVICE_ID_A2DP;
> +	cmd.flags = 0;
> 
> 	ret = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
> 					sizeof(cmd), &cmd, 0, NULL, NULL);
> diff --git a/android/hal-avrcp.c b/android/hal-avrcp.c
> index 46e25a0..4907f4a 100644
> --- a/android/hal-avrcp.c
> +++ b/android/hal-avrcp.c
> @@ -220,6 +220,7 @@ static bt_status_t init(btrc_callbacks_t *callbacks)
> 				sizeof(ev_handlers) / sizeof(ev_handlers[0]));
> 
> 	cmd.service_id = HAL_SERVICE_ID_AVRCP;
> +	cmd.flags = 0;
> 
> 	ret = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
> 					sizeof(cmd), &cmd, 0, NULL, NULL);
> diff --git a/android/hal-bluetooth.c b/android/hal-bluetooth.c
> index 6871f5d..4b31ff1 100644
> --- a/android/hal-bluetooth.c
> +++ b/android/hal-bluetooth.c
> @@ -442,6 +442,7 @@ static int init(bt_callbacks_t *callbacks)
> 	}
> 
> 	cmd.service_id = HAL_SERVICE_ID_SOCKET;
> +	cmd.flags = 0;
> 
> 	status = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
> 					sizeof(cmd), &cmd, NULL, NULL, NULL);
> diff --git a/android/hal-handsfree.c b/android/hal-handsfree.c
> index 1b150c3..422f52c 100644
> --- a/android/hal-handsfree.c
> +++ b/android/hal-handsfree.c
> @@ -212,6 +212,7 @@ static bt_status_t init(bthf_callbacks_t *callbacks)
> 				sizeof(ev_handlers)/sizeof(ev_handlers[0]));
> 
> 	cmd.service_id = HAL_SERVICE_ID_HANDSFREE;
> +	cmd.flags = 0;
> 
> 	ret = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
> 					sizeof(cmd), &cmd, 0, NULL, NULL);
> diff --git a/android/hal-hidhost.c b/android/hal-hidhost.c
> index c758d2a..fe1b4df 100644
> --- a/android/hal-hidhost.c
> +++ b/android/hal-hidhost.c
> @@ -354,6 +354,7 @@ static bt_status_t init(bthh_callbacks_t *callbacks)
> 				sizeof(ev_handlers)/sizeof(ev_handlers[0]));
> 
> 	cmd.service_id = HAL_SERVICE_ID_HIDHOST;
> +	cmd.flags = 0;
> 
> 	ret = hal_ipc_cmd(HAL_SERVICE_ID_CORE, HAL_OP_REGISTER_MODULE,
> 					sizeof(cmd), &cmd, 0, NULL, NULL);
> diff --git a/android/hal-ipc-api.txt b/android/hal-ipc-api.txt
> index 1a19c80..f68324d 100644
> --- a/android/hal-ipc-api.txt
> +++ b/android/hal-ipc-api.txt
> @@ -124,12 +124,16 @@ Core Service (ID 0)
> 	Opcode 0x01 - Register module command/response
> 
> 		Command parameters: Service id (1 octet)
> +		                    Flags (1 octet)

We might better go with a Flags (4 octets) here. Otherwise you only have 8 options which might be enough or not. Your choice.

Or instead of a bit mask, we do a Configuration (1 octet) were we have the default configuration with 0x00 and then alternatives with all other values. That might be actually a bit better.

> 		Response parameters: <none>
> 
> 		In case a command is sent for an undeclared service ID, it will
> 		be rejected. Also there will be no notifications for undeclared
> 		service ID.
> 
> +		Flags parameter values should be defined as needed by
> +		respective services.
> +
> 		In case of an error, the error response will be returned.
> 
> 	Opcode 0x02 - Unregister module command/response
> @@ -749,6 +753,9 @@ Bluetooth Handsfree HAL (ID 5)
> 
> Android HAL name: "handsfree" (BT_PROFILE_HANDSFREE_ID)
> 
> +	Service flags:               0x01 = Disable HSP AG
> +	                             0x02 = Disable HFP AG
> +

If you do not want HSP and HFP, then there is no point in registering handsfree ID at all. I am tending currently towards the configuration option.

	0x00 = Provide Handsfree profile
	0x01 = Provide Headset profile

There is really no point in providing both? Or is there a case where you would provide both?

Regards

Marcel

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