Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a9dc1cf5 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

greybus: hd/es2: add cport_connected callback and ARPC 



Add a host-device cport_connected callback, which will be called after a
connection has been created and that can be used by the host-device
driver to make sure its internal state is updated to match the CPort
attributes set by the SVC.

This callback will eventually replace the cport_features_enable
callback.

Signed-off-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Reviewed-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Acked-by: default avatarSandeep Patil <sspatil@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent b3136a77

drivers/staging/greybus/arpc.h

+6 −0
Original line number Diff line number Diff line
@@ -77,9 +77,15 @@ struct arpc_response_message { 


/* ARPC requests */

#define ARPC_TYPE_CPORT_RESET			0x00

#define ARPC_TYPE_CPORT_CONNECTED		0x01



struct arpc_cport_reset_req {

	__le16 cport_id;

} __packed;



struct arpc_cport_connected_req {

	__le16 cport_id;

} __packed;





#endif	/* __ARPC_H */

drivers/staging/greybus/es2.c

+20 −0
Original line number Diff line number Diff line
@@ -746,6 +746,25 @@ static int cport_disable(struct gb_host_device *hd, u16 cport_id) 
	return 0;

}



static int es2_cport_connected(struct gb_host_device *hd, u16 cport_id)

{

	struct es2_ap_dev *es2 = hd_to_es2(hd);

	struct device *dev = &es2->usb_dev->dev;

	struct arpc_cport_connected_req req;

	int ret;



	req.cport_id = cpu_to_le16(cport_id);

	ret = arpc_sync(es2, ARPC_TYPE_CPORT_CONNECTED, &req, sizeof(req),

			NULL, ES2_ARPC_CPORT_TIMEOUT);

	if (ret) {

		dev_err(dev, "failed to set connected state for cport %u: %d\n",

				cport_id, ret);

		return ret;

	}



	return 0;

}



static int latency_tag_enable(struct gb_host_device *hd, u16 cport_id)

{

	int retval;
@@ -930,6 +949,7 @@ static struct gb_hd_driver es2_driver = { 
	.cport_release			= es2_cport_release,

	.cport_enable			= cport_enable,

	.cport_disable			= cport_disable,

	.cport_connected		= es2_cport_connected,

	.latency_tag_enable		= latency_tag_enable,

	.latency_tag_disable		= latency_tag_disable,

	.output				= output,

drivers/staging/greybus/hd.h

+1 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ struct gb_hd_driver { 
	int (*cport_enable)(struct gb_host_device *hd, u16 cport_id,

				unsigned long flags);

	int (*cport_disable)(struct gb_host_device *hd, u16 cport_id);

	int (*cport_connected)(struct gb_host_device *hd, u16 cport_id);

	int (*cport_flush)(struct gb_host_device *hd, u16 cport_id);

	int (*cport_ping)(struct gb_host_device *hd, u16 cport_id);

	int (*message_send)(struct gb_host_device *hd, u16 dest_cport_id,