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 Signed-off-by: Alex Deucher <[email protected]> Cc: [email protected] --- drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c index 9ba0a7d..92b6aca 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) { -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
