From c4425c8f26aad2b49c5959fad277c9d109fb8ca3 Mon Sep 17 00:00:00 2001 From: Frank Praznik Date: Thu, 22 Sep 2016 20:18:10 -0400 Subject: [PATCH] HID: sony: Update copyright and add Dualshock 4 rate control note Update the copyright notice with the current year and add a note about values for controlling the Dualshock 4 reporting rate. Processing reports at the default full rate of 1000hz can be too demanding for some low-power embedded processors so noting alternate values for people working with this hardware can be useful. Thanks to Rostislav Pehlivanov for finding these values. Signed-off-by: Frank Praznik Signed-off-by: Jiri Kosina --- drivers/hid/hid-sony.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 9b96f9570531..9bf4e3637ba2 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -8,7 +8,7 @@ * Copyright (c) 2012 David Dillow * Copyright (c) 2006-2013 Jiri Kosina * Copyright (c) 2013 Colin Leitner - * Copyright (c) 2014 Frank Praznik + * Copyright (c) 2014-2016 Frank Praznik */ /* @@ -1879,6 +1879,17 @@ static void dualshock4_send_output_report(struct sony_sc *sc) u8 *buf = sc->output_report_dmabuf; int offset; + /* + * NOTE: The buf[1] field of the Bluetooth report controls + * the Dualshock 4 reporting rate. + * + * Known values include: + * + * 0x80 - 1000hz (full speed) + * 0xA0 - 31hz + * 0xB0 - 20hz + * 0xD0 - 66hz + */ if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) { memset(buf, 0, DS4_REPORT_0x05_SIZE); buf[0] = 0x05; -- 2.20.1