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| author | Johan Hovold <johan@hovoldconsulting.com> | 2016-08-26 10:55:48 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-08-26 11:21:13 (GMT) |
| commit | 77e52b3b0b6489968fa7d230052afca47c556ad6 (patch) | |
| tree | d450a5a8d46b55cb58cfd5cab01ba7d4c1bb0746 | |
| parent | d2dee94b66162d0839dcccee663c90400492fd1b (diff) | |
| download | linux-77e52b3b0b6489968fa7d230052afca47c556ad6.tar.xz | |
greybus: es2: implement shutdown callback
Implement the shutdown callback which is used to execute shutdown
operations on offloaded connections.
This adds a new shutdown ARPC.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
| -rw-r--r-- | drivers/staging/greybus/arpc.h | 7 | ||||
| -rw-r--r-- | drivers/staging/greybus/es2.c | 27 |
2 files changed, 34 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arpc.h b/drivers/staging/greybus/arpc.h index d44434f..d0230ab 100644 --- a/drivers/staging/greybus/arpc.h +++ b/drivers/staging/greybus/arpc.h @@ -81,6 +81,7 @@ struct arpc_response_message { #define ARPC_TYPE_CPORT_QUIESCE 0x02 #define ARPC_TYPE_CPORT_CLEAR 0x03 #define ARPC_TYPE_CPORT_FLUSH 0x04 +#define ARPC_TYPE_CPORT_SHUTDOWN 0x05 struct arpc_cport_reset_req { __le16 cport_id; @@ -104,4 +105,10 @@ struct arpc_cport_flush_req { __le16 cport_id; } __packed; +struct arpc_cport_shutdown_req { + __le16 cport_id; + __le16 timeout; + __u8 phase; +} __packed; + #endif /* __ARPC_H */ diff --git a/drivers/staging/greybus/es2.c b/drivers/staging/greybus/es2.c index 1817c35..123dc9d 100644 --- a/drivers/staging/greybus/es2.c +++ b/drivers/staging/greybus/es2.c @@ -783,6 +783,32 @@ static int es2_cport_flush(struct gb_host_device *hd, u16 cport_id) return 0; } +static int es2_cport_shutdown(struct gb_host_device *hd, u16 cport_id, + u8 phase, unsigned int timeout) +{ + struct es2_ap_dev *es2 = hd_to_es2(hd); + struct device *dev = &es2->usb_dev->dev; + struct arpc_cport_shutdown_req req; + int result; + int ret; + + if (timeout > U16_MAX) + return -EINVAL; + + req.cport_id = cpu_to_le16(cport_id); + req.timeout = cpu_to_le16(timeout); + req.phase = phase; + ret = arpc_sync(es2, ARPC_TYPE_CPORT_SHUTDOWN, &req, sizeof(req), + &result, ES2_ARPC_CPORT_TIMEOUT + timeout); + if (ret) { + dev_err(dev, "failed to send shutdown over cport %u: %d (%d)\n", + cport_id, ret, result); + return ret; + } + + return 0; +} + static int es2_cport_quiesce(struct gb_host_device *hd, u16 cport_id, size_t peer_space, unsigned int timeout) { @@ -1016,6 +1042,7 @@ static struct gb_hd_driver es2_driver = { .cport_disable = cport_disable, .cport_connected = es2_cport_connected, .cport_flush = es2_cport_flush, + .cport_shutdown = es2_cport_shutdown, .cport_quiesce = es2_cport_quiesce, .cport_clear = es2_cport_clear, .latency_tag_enable = latency_tag_enable, |