diff options
| author | Eric Yang <Eric.Yang2@amd.com> | 2018-02-06 17:28:46 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-02-19 14:20:15 -0500 |
| commit | fdf0c1c2f75ea3380e13a5f26a0155775d5162f0 (patch) | |
| tree | 304ad6a318c09359cdeac5436683605689ec43a1 /drivers/gpu/drm/amd/display/dc | |
| parent | 3b94a4007dcfd4ac5780cd3d8a2d99979c966073 (diff) | |
drm/amd/display: Add logging for aux DPCD access
Add basic logging for DPCD access. Does not print
by default.
Currently only prints first byte of the data accessed.
Technical debt: Need to make it so that the entire
data block accessed is printed. Also need to log
address space that's not DPCD.
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c index fc7a7d4ebca5..0b1db48fef36 100644 --- a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c +++ b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c @@ -284,6 +284,14 @@ static bool read_command( msleep(engine->delay); } while (ctx.operation_succeeded && !ctx.transaction_complete); + if (request->payload.address_space == + I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) { + dm_logger_write(engine->base.ctx->logger, LOG_I2C_AUX, "READ: addr:0x%x value:0x%x Result:%d", + request->payload.address, + request->payload.data[0], + ctx.operation_succeeded); + } + return ctx.operation_succeeded; } @@ -484,6 +492,14 @@ static bool write_command( msleep(engine->delay); } while (ctx.operation_succeeded && !ctx.transaction_complete); + if (request->payload.address_space == + I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD) { + dm_logger_write(engine->base.ctx->logger, LOG_I2C_AUX, "WRITE: addr:0x%x value:0x%x Result:%d", + request->payload.address, + request->payload.data[0], + ctx.operation_succeeded); + } + return ctx.operation_succeeded; } |