From c5a120b3f09c03e87b2cbc116af8250afb2dd500 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 1 Apr 2019 13:38:40 -0700 Subject: tegra: sound: Add an I2S driver Add a driver which supports transmitting digital sound to an audio codec. This uses fixed parameters as a device-tree binding is not currently defined. Signed-off-by: Simon Glass Acked-by: Jon Hunter Signed-off-by: Tom Warren --- drivers/sound/tegra_i2s_priv.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 drivers/sound/tegra_i2s_priv.h (limited to 'drivers/sound/tegra_i2s_priv.h') diff --git a/drivers/sound/tegra_i2s_priv.h b/drivers/sound/tegra_i2s_priv.h new file mode 100644 index 0000000000..7cd3fc808c --- /dev/null +++ b/drivers/sound/tegra_i2s_priv.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2018 Google LLC + * Written by Simon Glass + */ + +#ifndef __TEGRA_I2S_PRIV_H +#define __TEGRA_I2S_PRIV_H + +enum { + /* Set i2s device (in buf) */ + AHUB_MISCOP_SET_I2S, +}; + +/* + * tegra_i2s_set_cif_tx_ctrl() - Set the I2C port to send to + * + * The CIF is not really part of I2S -- it's for Audio Hub to control + * the interface between I2S and Audio Hub. However since it's put in + * the I2S registers domain instead of the Audio Hub, we need to export + * this as a function. + * + * @dev: I2S device + * @value: Value to write to CIF_TX_CTRL register + * @return 0 + */ +int tegra_i2s_set_cif_tx_ctrl(struct udevice *dev, u32 value); + +#endif -- cgit v1.2.3