diff options
author | Johan Hovold <johan@hovoldconsulting.com> | 2016-08-10 12:58:44 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-08-11 14:13:07 +0200 |
commit | 6471c0039cd2fa92bb7df1262c57cb5190eb4311 (patch) | |
tree | 49132fb017e0d7ac3c11a423fabfa4cb3e56355f /drivers/staging/greybus/es2.c | |
parent | 0e7cd0d259890f21d13171d5798eed24a03903dc (diff) |
greybus: hd/es2: add cport_clear callback and ARPC
Add a host-device cport_clear callback, which will be called as part
of the new connection tear-down sequence to reset the CPort state.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Sandeep Patil <sspatil@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/es2.c')
-rw-r--r-- | drivers/staging/greybus/es2.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c index 42f248362b35..7f46f2a91833 100644 --- a/drivers/staging/greybus/es2.c +++ b/drivers/staging/greybus/es2.c @@ -794,6 +794,24 @@ static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id, return 0; } +static int es2_cport_clear(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_clear_req req; + int ret; + + req.cport_id = cpu_to_le16(cport_id); + ret = arpc_sync(es2, ARPC_TYPE_CPORT_CLEAR, &req, sizeof(req), + NULL, ES2_ARPC_CPORT_TIMEOUT); + if (ret) { + dev_err(dev, "failed to clear 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; @@ -980,6 +998,7 @@ static struct gb_hd_driver es2_driver = { .cport_disable = cport_disable, .cport_connected = es2_cport_connected, .cport_quiesce = es2_cport_quiesce, + .cport_clear = es2_cport_clear, .latency_tag_enable = latency_tag_enable, .latency_tag_disable = latency_tag_disable, .output = output, |