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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-08-27 17:23:28 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-09-08 20:12:53 +0200 |
| commit | 1f75b29d3fc9abb06b095860f9312f8190e6015b (patch) | |
| tree | daa75b633926b8a1002f7e5f879f4bbec99b68d8 /drivers/gpu/drm/radeon/atombios_dp.c | |
| parent | c1e74122fb029d30b66d9364122aef50265354aa (diff) | |
| download | op-kernel-dev-1f75b29d3fc9abb06b095860f9312f8190e6015b.zip op-kernel-dev-1f75b29d3fc9abb06b095860f9312f8190e6015b.tar.gz | |
drm/radeon: Handle DP_AUX_I2C_WRITE_STATUS_UPDATE
When we get an i2c defer or short ack for i2c-over-aux write we need
to switch to WRITE_STATUS_UPDATE to poll for the completion of the
original request.
Looks like radeon doesn't do anything special with the request type,
so hopefully just treating it the same as a i2c write is enough.
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 9cd49c5..bd73b40 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -179,6 +179,7 @@ radeon_dp_aux_transfer_atom(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg) switch (msg->request & ~DP_AUX_I2C_MOT) { case DP_AUX_NATIVE_WRITE: case DP_AUX_I2C_WRITE: + case DP_AUX_I2C_WRITE_STATUS_UPDATE: /* The atom implementation only supports writes with a max payload of * 12 bytes since it uses 4 bits for the total count (header + payload) * in the parameter space. The atom interface supports 16 byte |
