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drm/radeon/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.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Ville Syrjälä 2015-08-27 17:23:31 +03:00 committed by Alex Deucher
parent 6e7a384074
commit 3f8340cc72
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/radeon/atombios_dp.c
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@ -171,8 +171,9 @@ radeon_dp_aux_transfer_atom(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
return -E2BIG; return -E2BIG;
tx_buf[0] = msg->address & 0xff; tx_buf[0] = msg->address & 0xff;
tx_buf[1] = msg->address >> 8; tx_buf[1] = (msg->address >> 8) & 0xff;
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; tx_buf[3] = msg->size ? (msg->size - 1) : 0;
switch (msg->request & ~DP_AUX_I2C_MOT) { switch (msg->request & ~DP_AUX_I2C_MOT) {