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| author | Vinod Koul <vinod.koul@intel.com> | 2017-12-14 11:19:34 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-19 11:14:56 +0100 |
| commit | 7c3cd189b86d2fcf0579a7b61e8d9c6d5717a72e (patch) | |
| tree | 38d2cb5c787b71c10007d5d65f87f8b290c8afda /drivers/soundwire/bus.h | |
| parent | 9251345dca24b62b14e4e53e6ee3387ae7d9c790 (diff) | |
| download | lwn-7c3cd189b86d2fcf0579a7b61e8d9c6d5717a72e.tar.gz lwn-7c3cd189b86d2fcf0579a7b61e8d9c6d5717a72e.zip | |
soundwire: Add Master registration
A Master adds a SoundWire bus instance which scans the firmware
provided for device description.
In this patch we scan ACPI namespaces and create SoundWire
Slave devices based on ACPI description
Signed-off-by: Sanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-By: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/soundwire/bus.h')
| -rw-r--r-- | drivers/soundwire/bus.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h new file mode 100644 index 000000000000..a54921825ce0 --- /dev/null +++ b/drivers/soundwire/bus.h @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) +// Copyright(c) 2015-17 Intel Corporation. + +#ifndef __SDW_BUS_H +#define __SDW_BUS_H + +#if IS_ENABLED(CONFIG_ACPI) +int sdw_acpi_find_slaves(struct sdw_bus *bus); +#else +static inline int sdw_acpi_find_slaves(struct sdw_bus *bus) +{ + return -ENOTSUPP; +} +#endif + +void sdw_extract_slave_id(struct sdw_bus *bus, + u64 addr, struct sdw_slave_id *id); + +#endif /* __SDW_BUS_H */ |