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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 <frank.praznik@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -8,7 +8,7 @@
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* Copyright (c) 2012 David Dillow <dave@thedillows.org>
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* Copyright (c) 2006-2013 Jiri Kosina
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* Copyright (c) 2013 Colin Leitner <colin.leitner@gmail.com>
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* Copyright (c) 2014 Frank Praznik <frank.praznik@gmail.com>
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* Copyright (c) 2014-2016 Frank Praznik <frank.praznik@gmail.com>
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*/
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/*
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@ -1879,6 +1879,17 @@ static void dualshock4_send_output_report(struct sony_sc *sc)
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u8 *buf = sc->output_report_dmabuf;
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int offset;
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/*
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* NOTE: The buf[1] field of the Bluetooth report controls
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* the Dualshock 4 reporting rate.
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*
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* Known values include:
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*
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* 0x80 - 1000hz (full speed)
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* 0xA0 - 31hz
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* 0xB0 - 20hz
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* 0xD0 - 66hz
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*/
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if (sc->quirks & DUALSHOCK4_CONTROLLER_USB) {
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memset(buf, 0, DS4_REPORT_0x05_SIZE);
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buf[0] = 0x05;
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