diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2019-08-21 13:58:18 -0500 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-08-23 12:01:02 +0530 |
| commit | bf03473d5bcc85fbe9533fa042f67809d8520c4e (patch) | |
| tree | f7011ad3cc5026c8d2644ba7bede251510ec2d98 /drivers/soundwire/bus.h | |
| parent | e87cf35835d933d8c295cc946dae8547d1a6bd63 (diff) | |
soundwire: add debugfs support
Add base debugfs mechanism for SoundWire bus by creating soundwire
root and master-N and slave-x hierarchy.
Also add SDW Slave SCP, DP0 and DP-N register debug file.
Registers not implemented will print as "XX"
Credits: this patch is based on an earlier internal contribution by
Vinod Koul, Sanyog Kale, Shreyas Nc and Hardik Shah.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Sanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190821185821.12690-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/bus.h')
| -rw-r--r-- | drivers/soundwire/bus.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h index 4429c51c5f86..9d6ea7e447ff 100644 --- a/drivers/soundwire/bus.h +++ b/drivers/soundwire/bus.h @@ -18,6 +18,22 @@ static inline int sdw_acpi_find_slaves(struct sdw_bus *bus) void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id); +#ifdef CONFIG_DEBUG_FS +void sdw_bus_debugfs_init(struct sdw_bus *bus); +void sdw_bus_debugfs_exit(struct sdw_bus *bus); +void sdw_slave_debugfs_init(struct sdw_slave *slave); +void sdw_slave_debugfs_exit(struct sdw_slave *slave); +void sdw_debugfs_init(void); +void sdw_debugfs_exit(void); +#else +static inline void sdw_bus_debugfs_init(struct sdw_bus *bus) {} +static inline void sdw_bus_debugfs_exit(struct sdw_bus *bus) {} +static inline void sdw_slave_debugfs_init(struct sdw_slave *slave) {} +static inline void sdw_slave_debugfs_exit(struct sdw_slave *slave) {} +static inline void sdw_debugfs_init(void) {} +static inline void sdw_debugfs_exit(void) {} +#endif + enum { SDW_MSG_FLAG_READ = 0, SDW_MSG_FLAG_WRITE, |