ts (time stamp) interface is required when axd is to perform synchronisation. since the time stamp hardware is SoC dependent, this file provides the interface that can be implemented by a different driver to do the necessary time stamp translation to perform synchronisation inside AXD
Signed-off-by: Qais Yousef <qais.you...@imgtec.com> Cc: Arnd Bergmann <a...@arndb.de> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: <alsa-de...@alsa-project.org> --- drivers/char/axd/axd_ts_driver.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 drivers/char/axd/axd_ts_driver.h diff --git a/drivers/char/axd/axd_ts_driver.h b/drivers/char/axd/axd_ts_driver.h new file mode 100644 index 000000000000..2b99ad4a7adc --- /dev/null +++ b/drivers/char/axd/axd_ts_driver.h @@ -0,0 +1,24 @@ +/* + * Copyright (C) 2014 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * AXD timestamp driver interface. + */ +#include <linux/types.h> + +/* + * Called at the beginning of a stream to set the fixed reference point in time + * for the stream. This should not be implemented if the reference point should + * not be altered in this way, and is managed through other means. + */ +void __attribute__((weak)) axd_ts_reset(void); + +/* + * Adjusts the provided timestamp from the source to destination formats. + * @return Non-zero for failure. + */ +int __attribute__((weak)) axd_ts_adjust(u64 *ts); -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
