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 radeon non-atom aux path
Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_dp_auxch.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_dp_auxch.c b/drivers/gpu/drm/radeon/radeon_dp_auxch.c index fcbd60b..3b0c229 100644 --- a/drivers/gpu/drm/radeon/radeon_dp_auxch.c +++ b/drivers/gpu/drm/radeon/radeon_dp_auxch.c @@ -116,8 +116,8 @@ radeon_dp_aux_transfer_native(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg AUX_SW_WR_BYTES(bytes));
/* write the data header into the registers */ - /* request, addres, msg size */ - byte = (msg->request << 4); + /* request, address, msg size */ + byte = (msg->request << 4) | ((msg->address >> 16) & 0xf); WREG32(AUX_SW_DATA + aux_offset[instance], AUX_SW_DATA_MASK(byte) | AUX_SW_AUTOINCREMENT_DISABLE);