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authorPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>2019-08-21 21:58:18 +0300
committerVinod Koul <vkoul@kernel.org>2019-08-23 09:31:02 +0300
commitbf03473d5bcc85fbe9533fa042f67809d8520c4e (patch)
treef7011ad3cc5026c8d2644ba7bede251510ec2d98 /drivers/soundwire/bus.h
parente87cf35835d933d8c295cc946dae8547d1a6bd63 (diff)
downloadlinux-bf03473d5bcc85fbe9533fa042f67809d8520c4e.tar.xz
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.h16
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,