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Author SHA1 Message Date
Jeffrey Hugo
830f3f27a3 accel/qaic: Add documentation for AIC100 accelerator driver 
The Qualcomm Cloud AI 100 (AIC100) device is an Artificial Intelligence
accelerator PCIe card. It contains a number of components both in the
SoC and on the card which facilitate running workloads:

QSM: management processor
NSPs: workload compute units
DMA Bridge: dedicated data mover for the workloads
MHI: multiplexed communication channels
DDR: workload storage and memory

The Linux kernel driver for AIC100 is called "QAIC" and is located in the
accel subsystem.

Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1679932497-30277-2-git-send-email-quic_jhugo@quicinc.com
 2023-04-06 08:23:03 +02:00
Daniel Vetter
f2c7ca8901 drm/atomic-helper: Don't set deadline for modesets 
If the crtc is being switched on or off then the semantics of
computing the timestampe of the next vblank is somewhat ill-defined.
And indeed, the code splats with a warning in the timestamp
computation code. Specifically it hits the check to make sure that
atomic drivers have full set up the timing constants in the drm_vblank
structure, and that's just not the case before the crtc is actually
on.

For robustness it seems best to just not set deadlines for modesets.

v2: Also skip on inactive crtc (Ville)

Link: https://lore.kernel.org/dri-devel/dfc21f18-7e1e-48f0-c05a-d659b9c90b91@linaro.org/
Fixes: d39e48ca80 ("drm/atomic-helper: Set fence deadline for vblank")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Rob Clark <robdclark@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Reported-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # test patch only
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405133105.947834-1-daniel.vetter@ffwll.ch
 2023-04-06 07:33:25 +02:00
Ville Syrjälä
5d844091f2 drm/scdc-helper: Pimp SCDC debugs 
Include the device and connector information in the SCDC
debugs. Makes it easier to figure out who did what.

v2: Rely on connector->ddc (Maxime)

Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Emma Anholt <emma@anholt.net>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403223652.18848-1-ville.syrjala@linux.intel.com
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
 2023-04-06 01:30:12 +03:00
Daniel Vetter
ee4cce0a8f drm/fb-helper: fix input validation gaps in check_var 
Apparently drivers need to check all this stuff themselves, which for
most things makes sense I guess. And for everything else we luck out,
because modern distros stopped supporting any other fbdev drivers than
drm ones and I really don't want to argue anymore about who needs to
check stuff. Therefore fixing all this just for drm fbdev emulation is
good enough.

Note that var->active is not set or validated. This is just control
flow for fbmem.c and needs to be validated in there as needed.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-3-daniel.vetter@ffwll.ch
 2023-04-05 22:43:08 +02:00
Daniel Vetter
36e239b5d5 drm/fb-helper: drop redundant pixclock check from drm_fb_helper_set_par() 
The fb_check_var hook is supposed to validate all this stuff. Any
errors from fb_set_par are considered driver/hw issues and resulting
in dmesg warnings.

Luckily we do fix up the pixclock already, so this is all fine.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-2-daniel.vetter@ffwll.ch
 2023-04-05 22:42:37 +02:00
Daniel Vetter
1935f0deb6 drm/fb-helper: set x/yres_virtual in drm_fb_helper_check_var 
Drivers are supposed to fix this up if needed if they don't outright
reject it. Uncovered by 6c11df58fd ("fbmem: Check virtual screen
sizes in fb_set_var()").

Reported-by: syzbot+20dcf81733d43ddff661@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=c5faf983bfa4a607de530cd3bb008888bf06cefc
Cc: stable@vger.kernel.org # v5.4+
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404194038.472803-1-daniel.vetter@ffwll.ch
 2023-04-05 22:42:10 +02:00
Alexander Stein
77d08a2de6 drm/bridge: ti-sn65dsi86: Allow GPIO operations to sleep 
There is no need to require non-sleeping GPIO access. Silence the
WARN_ON() if GPIO is using e.g. I2C expanders.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405135127.769665-1-alexander.stein@ew.tq-group.com
 2023-04-05 08:33:19 -07:00
AngeloGioacchino Del Regno
a80c882183 drm/panel-edp: Add AUO NE135FBM-N41 v8.1 panel entry 
Add a panel entry with delay_200_500_e50 for the AUO NE135FBM-N41
version 8.1, found on a number of ACER laptops, including the
Swift 3 (SF313-52, SF313-53), Chromebook Spin 513 (CP513-2H) and
others.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405100452.44225-1-angelogioacchino.delregno@collabora.com
 2023-04-05 08:28:00 -07:00
Pin-yen Lin
4224011374 drm/bridge: ps8640: Use constant sleep time for polling hpd 
The default hpd_wait_us in panel_edp.c is 2 seconds. This makes the
sleep time in the polling of _ps8640_wait_hpd_asserted become 200ms.
Change it to a constant 20ms to speed up the function.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230331030204.1179524-1-treapking@chromium.org
 2023-04-05 14:42:12 +02:00
Marek Vasut
ca161b259c drm/bridge: ti-sn65dsi83: Do not generate HFP/HBP/HSA and EOT packet 
Do not generate the HS front and back porch gaps, the HSA gap and
EOT packet, as per "SN65DSI83 datasheet SLLSEC1I - SEPTEMBER 2012
- REVISED OCTOBER 2020", page 22, these packets are not required.
This makes the TI SN65DSI83 bridge work with Samsung DSIM on i.MX8MN.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403190242.224490-1-marex@denx.de
 2023-04-05 13:01:29 +02:00
Luca Ceresoli
e09220f42b drm: bridge: ldb: add support for using channel 1 only 
The LDB driver currently checks whether dual mode is used, otherwise it
assumes only channel 0 is in use. Add support for using only channel 1. In
device tree terms, this means linking port 2 only.

Doing this cleanly requires changing the logic of the probe functions from
this:

 1. use of_graph_get_remote_node() on port 1 to find the panel
 2. use drm_of_lvds_get_dual_link_pixel_order() to detect dual mode

to this:

 1. use of_graph_get_remote_node() twice to find remote ports
 2. reuse the result of the above to know whether each channel is enabled
    and to find the panel
 3. if (both channels as enabled)
        use drm_of_lvds_get_dual_link_pixel_order() to detect dual mode

Also add a dev_dbg() to log the detected mode and log an error in case no
panel was found (no channel enabled).

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405081058.2347130-2-luca.ceresoli@bootlin.com
 2023-04-05 11:01:42 +02:00
Luca Ceresoli
8cc0b604f2 drm: bridge: ldb: add missing \n in dev_warn() string 
dev_warn() and similar require a training \n.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405081058.2347130-1-luca.ceresoli@bootlin.com
 2023-04-05 11:01:12 +02:00
Alexander Stein
ce7498acaa drm/bridge: ti-sn65dsi83: use dev_err_probe if host attach failed 
There might be cases where the host attach is deferred, use dev_err_probe
to add more detailed information to /sys/kernel/debug/devices_deferred.

Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230405075223.579461-1-alexander.stein@ew.tq-group.com
 2023-04-05 10:47:28 +02:00
Karol Wachowski
cb949ce504 accel/ivpu: Remove D3hot delay for Meteorlake 
VPU on MTL has hardware optimizations and does not require 10ms
D0 - D3hot transition delay imposed by PCI specification (PCIe
r6.0, sec 5.9.) .

The delay removal is traditionally done by adding PCI ID to
quirk_remove_d3hot_delay() in drivers/pci/quirks.c . But since
we do not need that optimization before driver probe and we
can better specify in the ivpu driver on what (future) hardware
use the optimization, we do not use quirk_remove_d3hot_delay()
for that.

Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403121545.2995279-1-stanislaw.gruszka@linux.intel.com
 2023-04-05 09:02:28 +02:00
Qiang Yu
8678c8b305 Revert "drm/lima: add usage counting method to ctx_mgr" 
This reverts commit bccafec957.

This is due to the depend commit has been reverted on upstream:
commit baad10973f ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-4-yq882255@163.com
 2023-04-05 08:40:47 +08:00
Qiang Yu
4ad17bf571 Revert "drm/lima: allocate unique id per drm_file" 
This reverts commit 87767de835.

This is due to the depend commit has been reverted on upstream:
commit baad10973f ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-3-yq882255@163.com
 2023-04-05 08:40:06 +08:00
Qiang Yu
7e4d0b09a9 Revert "drm/lima: add show_fdinfo for drm usage stats" 
This reverts commit 4a66f3da99.

This is due to the depend commit has been reverted on upstream:
commit baad10973f ("Revert "drm/scheduler: track GPU active time per entity"")

Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404002601.24136-2-yq882255@163.com
 2023-04-05 08:37:54 +08:00
Rob Clark
6f1ccbf074 drm/vblank: Fix for drivers that do not drm_vblank_init() 
This should fix a crash that was reported on ast (and possibly other
drivers which do not initialize vblank).

   fbcon: Taking over console
   Unable to handle kernel NULL pointer dereference at virtual address 0000000000000074
   Mem abort info:
     ESR = 0x0000000096000004
     EC = 0x25: DABT (current EL), IL = 32 bits
     SET = 0, FnV = 0
     EA = 0, S1PTW = 0
     FSC = 0x04: level 0 translation fault
   Data abort info:
     ISV = 0, ISS = 0x00000004
     CM = 0, WnR = 0
   user pgtable: 4k pages, 48-bit VAs, pgdp=0000080009d16000
   [0000000000000074] pgd=0000000000000000, p4d=0000000000000000
   Internal error: Oops: 0000000096000004 [#1] SMP
   Modules linked in: ip6table_nat tun nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink qrtr sunrpc binfmt_misc vfat fat xfs snd_usb_audio snd_hwdep snd_usbmidi_lib snd_seq snd_pcm snd_rawmidi snd_timer snd_seq_device snd soundcore joydev mc ipmi_ssif ipmi_devintf ipmi_msghandler arm_spe_pmu arm_cmn arm_dsu_pmu arm_dmc620_pmu cppc_cpufreq loop zram crct10dif_ce polyval_ce nvme polyval_generic ghash_ce sbsa_gwdt igb nvme_core ast nvme_common i2c_algo_bit xgene_hwmon gpio_dwapb scsi_dh_rdac scsi_dh_emc scsi_dh_alua ip6_tables ip_tables dm_multipath fuse
   CPU: 12 PID: 469 Comm: kworker/12:1 Not tainted 6.3.0-rc2-00008-gd39e48ca80c0 #1
   Hardware name: ADLINK AVA Developer Platform/AVA Developer Platform, BIOS TianoCore 2.04.100.07 (SYS: 2.06.20220308) 09/08/2022
   Workqueue: events fbcon_register_existing_fbs
   pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
   pc : drm_crtc_next_vblank_start+0x2c/0x98
   lr : drm_atomic_helper_wait_for_fences+0x90/0x240
   sp : ffff80000d583960
   x29: ffff80000d583960 x28: ffff07ff8fc187b0 x27: 0000000000000000
   x26: ffff07ff99c08c00 x25: 0000000000000038 x24: ffff07ff99c0c000
   x23: 0000000000000001 x22: 0000000000000038 x21: 0000000000000000
   x20: ffff07ff9640a280 x19: 0000000000000000 x18: ffffffffffffffff
   x17: 0000000000000000 x16: ffffb24d2eece1c0 x15: 0000003038303178
   x14: 3032393100000048 x13: 0000000000000000 x12: 0000000000000000
   x11: 0000000000000000 x10: 0000000000000000 x9 : ffffb24d2eeeaca0
   x8 : ffff80000d583628 x7 : 0000080077783000 x6 : 0000000000000000
   x5 : ffff80000d584000 x4 : ffff07ff99c0c000 x3 : 0000000000000130
   x2 : 0000000000000000 x1 : ffff80000d5839c0 x0 : ffff07ff99c0cc08
   Call trace:
    drm_crtc_next_vblank_start+0x2c/0x98
    drm_atomic_helper_wait_for_fences+0x90/0x240
    drm_atomic_helper_commit+0xb0/0x188
    drm_atomic_commit+0xb0/0xf0
    drm_client_modeset_commit_atomic+0x218/0x280
    drm_client_modeset_commit_locked+0x64/0x1a0
    drm_client_modeset_commit+0x38/0x68
    __drm_fb_helper_restore_fbdev_mode_unlocked+0xb0/0xf8
    drm_fb_helper_set_par+0x44/0x88
    fbcon_init+0x1e0/0x4a8
    visual_init+0xbc/0x118
    do_bind_con_driver.isra.0+0x194/0x3a0
    do_take_over_console+0x50/0x70
    do_fbcon_takeover+0x74/0xf8
    do_fb_registered+0x13c/0x158
    fbcon_register_existing_fbs+0x78/0xc0
    process_one_work+0x1ec/0x478
    worker_thread+0x74/0x418
    kthread+0xec/0x100
    ret_from_fork+0x10/0x20
   Code: f9400004 b9409013 f940a082 9ba30a73 (b9407662)
   ---[ end trace 0000000000000000 ]---

v2: Use drm_dev_has_vblank()

Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: d39e48ca80 ("drm/atomic-helper: Set fence deadline for vblank")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230403160314.1210533-1-robdclark@gmail.com
 2023-04-04 22:38:03 +02:00
Daniel Vetter
9b539c4d1b fbdev/radeon: use pci aperture helpers 
It's not exactly the same since the open coded version doesn't set
primary correctly. But that's a bugfix, so shouldn't hurt really.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-7-daniel.vetter@ffwll.ch
 2023-04-04 14:55:58 +02:00
Daniel Vetter
deddc9127b staging/lynxfb: Use pci aperture helper 
It exists! Note that since this is an exact copy, there shouldn't be
any functional difference here.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Teddy Wang <teddy.wang@siliconmotion.com>
Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-6-daniel.vetter@ffwll.ch
 2023-04-04 14:55:55 +02:00
Daniel Vetter
c1ebead360 drm/ast: Use drm_aperture_remove_conflicting_pci_framebuffers 
It's just open coded and matches.

Note that Thomas said that his version apparently failed for some
reason, but hey maybe we should try again.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Tested-by: Thomas Zimmmermann <tzimmermann@suse.de>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230111154112.90575-1-daniel.vetter@ffwll.ch
 2023-04-04 14:55:50 +02:00
Sui Jingfeng
92ba67347a video/aperture: Fix typos in comments 
EFI FB, VESA FB or VGA FB etc belong to firmware based framebuffer driver.

Signed-off-by: Sui Jingfeng <suijingfeng@loongson.cn>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230404040101.2165600-1-suijingfeng@loongson.cn
 2023-04-04 12:40:08 +02:00
Marek Vasut
3e66f493e1 dt-bindings: display: Start the info graphics with HS/VS change 
The VS signal change is synchronized to HS signal change, start the
info graphics with that event, instead of having that event occur in
the middle of it.

Scope trace of DPI bus with HS/VS active HIGH looks as follows:
         ________________...__
VS...___/__         __        \______...
HS...___/  \_______/  \__...__/  \___...
        ^                        ^
	|                        |
        |    Used to start here -'
	|
	'--- Start info graphics here

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230221200407.16531-1-marex@denx.de
 2023-04-03 16:38:16 +02:00
Marek Vasut
2792aed16c drm/bridge: tc358767: Enable DSI burst mode, LPM, non-continuous clock 
The TC358767/TC358867/TC9595 are capable of DSI burst mode, which
is more energy efficient than the non-burst modes. Make use of it.

The TC358767/TC358867/TC9595 are capable of DSI non-continuous clock,
since it sources the internal PLL clock from external clock source.
The DSI non-continuous clock further reduces power utilization.

The TC358767/TC358867/TC9595 may use DSI LPM for command transmissions,
make sure this is configured correctly in the DSI mode flags.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20221016003632.406468-1-marex@denx.de
 2023-04-03 16:38:16 +02:00
Simon Ser
41068c8b28 drm/vram-helper: turn on PRIME import/export 
We don't populate drm_driver.gem_prime_import_sg_table so only
DMA-BUFs exported from our own device can be imported. We don't
populate drm_gem_object_funcs.get_sg_table so DMA-BUFs cannot be
imported into another device. Still, this is useful to user-space
to share buffers between processes and between API boundaries
(e.g. wlroots hard-requires PRIME import/export support).

v2: expand commit message

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tian Tao <tiantao6@hisilicon.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302143502.500661-2-contact@emersion.fr
 2023-04-03 14:31:24 +02:00