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authorVille Syrjälä <ville.syrjala@linux.intel.com>2015-08-27 17:23:31 +0300
committerAlex Deucher <alexander.deucher@amd.com>2015-08-31 18:38:29 +0300
commit3f8340cc72c9a1a4b49bce7802afd7f248400ef5 (patch)
treedf1748057e0ac2443b2d0b993300994b72f7d921 /drivers/gpu/drm/radeon/atombios_dp.c
parent6e7a3840745c950c37d37cbb0af2e753a765d4ec (diff)
downloadlinux-3f8340cc72c9a1a4b49bce7802afd7f248400ef5.tar.xz
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
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
-rw-r--r--drivers/gpu/drm/radeon/atombios_dp.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index f81e0d7d0232..9cd49c584263 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -171,8 +171,9 @@ radeon_dp_aux_transfer_atom(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
return -E2BIG;
tx_buf[0] = msg->address & 0xff;
- tx_buf[1] = msg->address >> 8;
- tx_buf[2] = msg->request << 4;
+ tx_buf[1] = (msg->address >> 8) & 0xff;
+ 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) {