kernel/linux.git/drivers/gpu/drm, branch v3.14.47

drm/mgag200: Reject non-character-cell-aligned mode widths

2015-06-29T19:25:37+00:00

commit 25161084b1c1b0c29948f6f77266a35f302196b7 upstream. Turns out 1366x768 does not in fact work on this hardware. Signed-off-by: Adam Jackson Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman

drm/radeon: fix freeze for laptop with Turks/Thames GPU.

2015-06-23T00:01:23+00:00

commit 6dfd197283bffc23a2b046a7f065588de7e1fc1e upstream. Laptop with Turks/Thames GPU will freeze if dpm is enabled. It seems the SMC engine is relying on some state inside the CP engine. CP needs to chew at least one packet for it to get in good state for dynamic power management. This patch simply disabled and re-enable DPM after the ring test which is enough to avoid the freeze. Signed-off-by: Jérôme Glisse Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/i915: Fix DDC probe for passive adapters

2015-06-23T00:01:23+00:00

commit 3f5f1554ee715639e78d9be87623ee82772537e0 upstream. Passive DP->DVI/HDMI dongles on DP++ ports show up to the system as HDMI devices, as they do not have a sink device in them to respond to any AUX traffic. When probing these dongles over the DDC, sometimes they will NAK the first attempt even though the transaction is valid and they support the DDC protocol. The retry loop inside of drm_do_probe_ddc_edid() would normally catch this case and try the transaction again, resulting in success. That, however, was thwarted by the fix for [1]: commit 9292f37e1f5c79400254dca46f83313488093825 Author: Eugeni Dodonov Date: Thu Jan 5 09:34:28 2012 -0200 drm: give up on edid retries when i2c bus is not responding This added code to exit immediately if the return code from the i2c_transfer function was -ENXIO in order to reduce the amount of time spent in waiting for unresponsive or disconnected devices. That was possible because the underlying i2c bit banging algorithm had retries of its own (which, of course, were part of the reason for the bug the commit fixes). Since its introduction in commit f899fc64cda8569d0529452aafc0da31c042df2e Author: Chris Wilson Date: Tue Jul 20 15:44:45 2010 -0700 drm/i915: use GMBUS to manage i2c links we've been flipping back and forth enabling the GMBUS transfers, but we've settled since then. The GMBUS implementation does not do any retries, however, bailing out of the drm_do_probe_ddc_edid() retry loop on first encounter of -ENXIO. This, combined with Eugeni's commit, broke the retry on -ENXIO. Retry GMBUS once on -ENXIO on first message to mitigate the issues with passive adapters. This patch is based on the work, and commit message, by Todd Previte . [1] https://bugs.freedesktop.org/show_bug.cgi?id=41059 v2: Don't retry if using bit banging. v3: Move retry within gmbux_xfer, retry only on first message. v4: Initialize GMBUS0 on retry (Ville). v5: Take index reads into account (Ville). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=85924 Cc: Todd Previte Tested-by: Oliver Grafe (v2) Tested-by: Jim Bride Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman

drm/i915/hsw: Fix workaround for server AUX channel clock divisor

2015-06-23T00:01:23+00:00

commit e058c945e03a629c99606452a6931f632dd28903 upstream. According to the HSW b-spec we need to try clock divisors of 63 and 72, each 3 or more times, when attempting DP AUX channel communication on a server chipset. This actually wasn't happening due to a short-circuit that only checked the DP_AUX_CH_CTL_DONE bit in status rather than checking that the operation was done and that DP_AUX_CH_CTL_TIME_OUT_ERROR was not set. [v2] Implemented alternate solution suggested by Jani Nikula. Signed-off-by: Jim Bride Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman

drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling"

2015-06-06T15:19:40+00:00

commit 7c0411d2fabc2e2702c9871ffb603e251158b317 upstream. We have that bug for years and some users report side effects when fixing it on older hardware. So revert it for VM_CONTEXT0_PAGE_TABLE_END_ADDR, but keep it for VM 1-15. Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/radeon: fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling

2015-06-06T15:19:40+00:00

commit 607d48063512707a414e346972e2210dc71ab491 upstream. The mapping range is inclusive between starting and ending addresses. Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/radeon: more strictly validate the UVD codec

2015-05-17T16:53:50+00:00

commit d52cdfa4a0c6406bbfb33206341eaf1fb1555994 upstream. MPEG 2/4 are only supported since UVD3. Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/radeon: make UVD handle checking more strict

2015-05-17T16:53:50+00:00

commit a1b403da70e038ca6c6c6fe434d1d873546873a3 upstream. Invalid messages can crash the hw otherwise. Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/radeon: disable semaphores for UVD V1 (v2)

2015-05-17T16:53:50+00:00

commit 013ead48a843442e63b9426e3bd5df18ca5d054a upstream. Hardware doesn't seem to work correctly, just block userspace in this case. v2: add missing defines Bugs: https://bugs.freedesktop.org/show_bug.cgi?id=85320 Signed-off-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman

drm/i915: Add missing MacBook Pro models with dual channel LVDS

2015-05-17T16:53:50+00:00

commit 3916e3fd81021fb795bfbdb17f375b6b3685bced upstream. Single channel LVDS maxes out at 112 MHz. The 15" pre-retina models shipped with 1440x900 (106 MHz) by default or 1680x1050 (119 MHz) as a BTO option, both versions used dual channel LVDS even though the smaller one would have fit into a single channel. Notes: Bug report showing that the MacBookPro8,2 with 1440x900 uses dual channel LVDS (this lead to it being hardcoded in intel_lvds.c by Daniel Vetter with commit 618563e3945b9d0864154bab3c607865b557cecc): https://bugzilla.kernel.org/show_bug.cgi?id=42842 If i915.lvds_channel_mode=2 is missing even though the machine needs it, every other vertical line is white and consequently, only the left half of the screen is visible (verified by myself on a MacBookPro9,1). Forum posting concerning a MacBookPro6,2 with 1440x900, author is using i915.lvds_channel_mode=2 on the kernel command line, proving that the machine uses dual channels: https://bbs.archlinux.org/viewtopic.php?id=185770 Chi Mei N154C6-L04 with 1440x900 is a replacement panel for all MacBook Pro "A1286" models, and that model number encompasses the MacBookPro6,2 / 8,2 / 9,1. Page 17 of the panel's datasheet shows it's driven with dual channel LVDS: http://www.ebay.com/itm/-/400690878560 http://www.everymac.com/ultimate-mac-lookup/?search_keywords=A1286 http://www.taopanel.com/chimei/datasheet/N154C6-L04.pdf Those three 15" models, MacBookPro6,2 / 8,2 / 9,1, are the only ones with i915 graphics and dual channel LVDS, so that list should be complete. And the 8,2 is already in intel_lvds.c. Possible motivation to use dual channel LVDS even on the 1440x900 models: Reduce the number of different parts, i.e. use identical logic boards and display cabling on both versions and the only differing component is the panel. Signed-off-by: Lukas Wunner Acked-by: Jani Nikula [Jani: included notes in the commit message for posterity] Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman