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| author | Alex Deucher <alexander.deucher@amd.com> | 2015-08-31 11:08:44 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-09-02 12:04:54 -0400 |
| commit | e39daf2c63518a8ce92e3ad5caa04097524b3585 (patch) | |
| tree | 34ba96570eb20d0c0743c5ab0cdfd2ea615c1147 | |
| parent | 7040c399aea2b0213a9aefd73e507369a6d641d6 (diff) | |
| download | drm-exynos-e39daf2c63518a8ce92e3ad5caa04097524b3585.tar.gz | |
drm/amdgpu/atom: Send out the full AUX address
AUX addresses are 20 bits long. Send out the entire address instead of
just the low 16 bits.
Port of:
drm/radeon/atom: Send out the full AUX address
to amdgpu
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c index 9ba0a7d5bc8e8..92b6acadfc527 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c @@ -139,7 +139,8 @@ amdgpu_atombios_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *m tx_buf[0] = msg->address & 0xff; tx_buf[1] = msg->address >> 8; - tx_buf[2] = msg->request << 4; + tx_buf[2] = (msg->request << 4) | + ((msg->address >> 16) & 0xf); tx_buf[3] = msg->size ? (msg->size - 1) : 0; switch (msg->request & ~DP_AUX_I2C_MOT) { |