Messages in this thread Patch in this message | | | From | Rodrigo Rivas Costa <> | Subject | [PATCH v5 3/4] HID: steam: command to check wireless connection | Date | Sun, 11 Mar 2018 20:58:41 +0100 |
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The wireless adaptor does not tell if a device is already connected when steam_probe() is run. Use a command to request the connection status.
Signed-off-by: Rodrigo Rivas Costa <rodrigorivascosta@gmail.com> --- drivers/hid/hid-steam.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/hid/hid-steam.c b/drivers/hid/hid-steam.c index 03eebc4c28ba..3d34716ae55f 100644 --- a/drivers/hid/hid-steam.c +++ b/drivers/hid/hid-steam.c @@ -118,6 +118,11 @@ static int steam_send_report(struct steam_device *steam, return ret; } +static inline int steam_send_report_byte(struct steam_device *steam, u8 cmd) +{ + return steam_send_report(steam, &cmd, 1); +} + static int steam_get_serial(struct steam_device *steam) { /* @@ -139,6 +144,16 @@ static int steam_get_serial(struct steam_device *steam) return 0; } +/* + * This command requests the wireless adaptor to post an event + * with the connection status. Useful if this driver is loaded when + * the controller is already connected. + */ +static inline int steam_request_conn_status(struct steam_device *steam) +{ + return steam_send_report_byte(steam, 0xb4); +} + static int steam_input_open(struct input_dev *dev) { struct steam_device *steam = input_get_drvdata(dev); @@ -360,6 +375,7 @@ static int steam_probe(struct hid_device *hdev, goto hid_hw_open_fail; } hid_info(hdev, "Steam wireless receiver connected"); + steam_request_conn_status(steam); } else { ret = steam_register(steam); if (ret) { -- 2.16.2
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