kernel/drivers/gpu/drm/amd/amdgpu/atombios_dp.c, branch linux-4.17.y

drm/amdgpu: Don't retry 7 times in amdgpu_atombios_dp_get_dpcd()

2016-08-08T17:28:39Z

When this code was written, we didn't retry DP aux transactions on any error, which required retrying important transactions like this in individual drivers. Since that's no longer the case, retrying here is not necessary. As well, we retry any aux transaction on any error 32 times. 7 * 32 = 224, which means this loop causes us to retry grabbing the dpcd 224 times. This is definitely far more then we actually need to do. Reviewed-by: Christian König Signed-off-by: Lyude Signed-off-by: Alex Deucher

drm/amdgpu: Don't print error on aux transaction timeouts

2016-08-08T17:28:33Z

Since it's normal for DRM to retry our aux transaction helpers multiple times in a row, up to 32 times for each attempted transaction, we're making a lot of noise that is no longer necessary now that DRM will just print the return code we give it. Reviewed-by: Christian König Signed-off-by: Lyude Signed-off-by: Alex Deucher

drm/amdgpu: fix DP mode validation

2016-05-12T19:03:49Z

Switch the order of the loops to walk the rates on the top so we exhaust all DP 1.1 rate/lane combinations before trying DP 1.2 rate/lane combos. This avoids selecting rates that are supported by the monitor, but not the connector leading to valid modes getting rejected. bug: https://bugs.freedesktop.org/show_bug.cgi?id=95206 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdgpu/dp: add back special handling for NUTMEG

2016-03-08T16:26:34Z

When I fixed the dp rate selection in: 3b73b168cffd9c392584d3f665021fa2190f8612 drm/amdgpu: fix dp link rate selection (v2) I accidently dropped the special handling for NUTMEG DP bridge chips. They require a fixed link rate. Reviewed-by: Christian König Reviewed-by: Ken Wang Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdgpu: fix dp link rate selection (v2)

2015-12-21T21:38:51Z

Need to properly handle the max link rate in the dpcd. This prevents some cases where 5.4 Ghz is selected when it shouldn't be. v2: simplify logic, add array bounds check Reviewed-by: Tom St Denis Signed-off-by: Alex Deucher

drm/amdgpu/atom: Send out the full AUX address

2015-09-02T16:04:54Z

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 Reviewed-by: Christian König Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org

drm/amdgpu: retry dcpd fetch

2015-06-04T01:03:41Z

Retry the dpcd fetch several times. Some eDP panels fail several times before the fetch is successful. bug: https://bugs.freedesktop.org/show_bug.cgi?id=73530 Ported from radeon. Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: simplify DPCD debug output

2015-06-04T01:03:41Z

Use %*ph rather than walking the array. Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: make some DP parameters const

2015-06-04T01:03:40Z

Ported from similar radeon patch. Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: add core driver (v4)

2015-06-04T01:03:15Z

This adds the non-asic specific core driver code. v2: remove extra kconfig option v3: implement minor fixes from Fengguang Wu v4: fix cast in amdgpu_ucode.c Acked-by: Christian König Acked-by: Jammy Zhou Signed-off-by: Alex Deucher