- 05 Sep, 2022 3 commits
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Simon Ser authored
This can help figure out why the kernel returns EINVAL from user-space. v2: add missing newlines Signed-off-by:
Simon Ser <contact@emersion.fr> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by:
Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220829151451.152114-2-contact@emersion.fr
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Simon Ser authored
Sometimes drivers are missing logs when they return EINVAL. Printing the failure here in common code can help understand where EINVAL is coming from. All other atomic_check() calls in this file already have similar logging. v2: add missing newlines Signed-off-by:
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Simon Ser authored
When registering a connector, the kernel sends a hotplug uevent in drm_connector_register(). When unregistering a connector, drivers are expected to send a uevent as well. However, user-space has no way to figure out that the connector isn't registered anymore: it'll still be reported in GETCONNECTOR IOCTLs. The documentation for DRM_CONNECTOR_UNREGISTERED states: > The connector […] has since been unregistered and removed from > userspace, or the connector was unregistered before it had a chance > to be exposed to userspace Signed-off-by:
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- 04 Sep, 2022 10 commits
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Guillaume Ranquet authored
This patch adds audio support to the DP driver for MT8195 with up to 8 channels. Signed-off-by:
Guillaume Ranquet <granquet@baylibre.com> Signed-off-by:
Bo-Chen Chen <rex-bc.chen@mediatek.com> Tested-by:
AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by:
Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220901044149.16782-11-rex-bc.chen@mediatek.com
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Jitao Shi authored
From the DP spec 1.4a chapter 3.3, upstream devices should implement HPD signal de-bouncing on an external connection. A period of 100ms should be used to detect an HPD connect event. To cover these cases, HPD de-bounce should be implemented only after HPD low has been detected for at least 100ms. Therefore, 1. If HPD is low (which means plugging out) for longer than 100ms: we need to do de-bouncing (which means we need to wait for 100ms). 2. If HPD low is for less than 100ms: we don't need to care about the de-bouncing. In this patch, we start a 100ms timer and use a need_debounce boolean to implement the feature. Two cases when HPD is high: 1. If the timer is expired (>100ms): - need_debounce is true. - When HPD high (plugging event comes), need_debounce will be true and then we need to do de-bouncing (wait for 100ms). 2. If the timer is not expired (<100ms): - need_debounce is false. - When HPD high (plugging event comes), need_debounce will be false and no need to do de-bouncing. HPD_______ __________________ | |<- 100ms -> |____________| <- 100ms -> Without HPD de-bouncing, USB-C to HDMI Adapaters will not be detected. The change has been successfully tested with the following devices: - Dell Adapter - USB-C to HDMI - Acer 1in1 HDMI dongle - Ugreen 1in1 HDMI dongle - innowatt HDMI + USB3 hub - Acer 2in1 HDMI dongle - Apple 3in1 HDMI dongle (A2119) - J5Create 3in1 HDMI dongle (JAC379) Tested-by:Jitao Shi <jitao.shi@mediatek.com> Signed-off-by:
CK Hu <ck.hu@mediatek.com> Signed-off-by:
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Guillaume Ranquet authored
Add External DisplayPort support to the MT8195 eDP driver. Signed-off-by:
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Bo-Chen Chen authored
It's not necessary to have a next_bridge for DP device, so we add this patch to judge this. Signed-off-by:
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Bo-Chen Chen authored
The calibration data formats of eDP and DP are different. We add "const struct mtk_dp_efuse_fmt *efuse_fmt" to the device data to define them. Signed-off-by:
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Bo-Chen Chen authored
The smc commands of eDP and DP are different. We add smc_cmd to the device data to define them. Signed-off-by:
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Bo-Chen Chen authored
The bridge types of eDP and DP are different. We add device data to this driver and add bridge_type to the device data to define them. Signed-off-by:
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Markus Schneider-Pargmann authored
This patch adds a embedded displayport driver for the MediaTek mt8195 SoC. It supports the MT8195, the embedded DisplayPort units. It offers DisplayPort 1.4 with up to 4 lanes. The driver creates a child device for the phy. The child device will never exist without the parent being active. As they are sharing a register range, the parent passes a regmap pointer to the child so that both can work with the same register range. The phy driver sets device data that is read by the parent to get the phy device that can be used to control the phy properties. This driver is based on an initial version by Jitao shi <jitao.shi@mediatek.com> Signed-off-by:
Markus Schneider-Pargmann <msp@baylibre.com> Signed-off-by:
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Markus Schneider-Pargmann authored
Similar to HDMI, DP uses audio infoframes as well which are structured very similar to the HDMI ones. This patch adds a helper function to pack the HDMI audio infoframe for DP, called hdmi_audio_infoframe_pack_for_dp(). hdmi_audio_infoframe_pack_only() is split into two parts. One of them packs the payload only and can be used for HDMI and DP. Also constify the frame parameter in hdmi_audio_infoframe_check() as it is passed to hdmi_audio_infoframe_check_only() which expects a const. Signed-off-by:
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Markus Schneider-Pargmann authored
This controller is present on several mediatek hardware. Currently mt8195 and mt8395 have this controller without a functional difference, so only one compatible field is added. The controller can have two forms, as a normal display port and as an embedded display port. Signed-off-by:
Rob Herring <robh@kernel.org> Reviewed-by:
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- 02 Sep, 2022 6 commits
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Chris Morgan authored
Add the option to set the byteswap order in the devicetree. For the official HDMI DIP for the NTC CHIP the byteswap order needs to be RGB, however the driver sets it as BGR. With this patch the driver will remain at BGR unless manually specified via devicetree. Signed-off-by:
Chris Morgan <macromorgan@hotmail.com> Reviewed-by:
Robert Foss <robert.foss@linaro.org> Signed-off-by:
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Chris Morgan authored
Update dt-binding documentation to add support for setting byteswap of chrontel ch7033. New property name of chrontel,byteswap added to set the byteswap order. This property is optional. Signed-off-by:
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Laurent Pinchart authored
Implement the bridge connector-related .get_edid() and .detect() operations for full DP mode, and report the related bridge capabilities and type. Signed-off-by:
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by:
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by:
Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
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Laurent Pinchart authored
Despite the SN65DSI86 being an eDP bridge, on some systems its output is routed to a DisplayPort connector. Enable DisplayPort mode when the next component in the display pipeline is detected as a DisplayPort connector, and disable eDP features in that case. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
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Tomi Valkeinen authored
The front and back porch registers are 8 bits, and pulse width registers are 15 bits, so reject any modes with larger periods. Signed-off-by:
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Imre Deak authored
If an MST connector was disabled in the old state during a commit, the connector's best_encoder will be NULL, so we can't look up mst_mgr via it. Do the lookup instead via intel_connector->mst_port which always points to the primary encoder. This fixes the following: [ 58.922866] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 58.922867] #PF: supervisor read access in kernel mode [ 58.922868] #PF: error_code(0x0000) - not-present page [ 58.922869] PGD 0 P4D 0 [ 58.922870] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 58.922872] CPU: 0 PID: 133 Comm: kworker/0:2 Tainted: G U 6.0.0-rc3-imre+ #560 [ 58.922874] Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR5 RVP, BIOS ADLPFWI1.R00.3135.A00.2203251419 03/25/2022 [ 58.922874] Workqueue: events output_poll_execute [drm_kms_helper] [ 58.922879] RIP: 0010:intel_dp_mst_atomic_check+0xbb/0x1c0 [i915] [ 58.922955] Code: 5b 7b f6 ff 84 c0 75 41 48 8b 44 24 18 65 48 2b 04 25 28 00 00 00 0f 85 ff 00 00 00 48 8b 45 10 48 8b 93 10 07 00 00 4c 89 e7 <48> 8b b0 70 01 00 00 48 83 c4 20 5b 5d 48 81 c6 f0 0c 00 00 41 5c [ 58.922956] RSP: 0018:ffffc90000633a88 EFLAGS: 00010246 [ 58.922957] RAX: 0000000000000000 RBX: ffff888117d19000 RCX: ffff888101893308 [ 58.922958] RDX: ffff888122981000 RSI: ffffffff82309ecc RDI: ffff888114da6800 [ 58.922959] RBP: ffff8881094bab48 R08: 0000000081917436 R09: 0000000068191743 [ 58.922960] R10: 0000000000000001 R11: 0000000000000001 R12: ffff888114da6800 [ 58.922960] R13: ffff8881143f8000 R14: 0000000000000000 R15: ffff888119bf2000 [ 58.922961] FS: 0000000000000000(0000) GS:ffff888496200000(0000) knlGS:0000000000000000 [ 58.922962] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.922962] CR2: 0000000000000170 CR3: 0000000005612004 CR4: 0000000000770ef0 [ 58.922963] PKRU: 55555554 [ 58.922963] Call Trace: [ 58.922964] <TASK> [ 58.922966] drm_atomic_helper_check_modeset+0x3f8/0xc70 [drm_kms_helper] [ 58.922972] intel_atomic_check+0xb1/0x3180 [i915] [ 58.923059] ? find_held_lock+0x2b/0x80 [ 58.923064] drm_atomic_check_only+0x5d3/0xa60 [drm] [ 58.923082] drm_atomic_commit+0x56/0xc0 [drm] [ 58.923097] ? drm_plane_get_damage_clips.cold+0x1c/0x1c [drm] [ 58.923114] drm_client_modeset_commit_atomic+0x235/0x280 [drm] [ 58.923132] drm_client_modeset_commit_locked+0x5b/0x190 [drm] [ 58.923148] drm_client_modeset_commit+0x24/0x50 [drm] [ 58.923164] drm_fb_helper_set_par+0xae/0xe0 [drm_kms_helper] [ 58.923171] drm_fb_helper_hotplug_event+0xd5/0xf0 [drm_kms_helper] [ 58.923178] output_poll_execute+0xac/0x200 [drm_kms_helper] [ 58.923187] process_one_work+0x268/0x580 [ 58.923190] ? process_one_work+0x580/0x580 [ 58.923191] worker_thread+0x52/0x3b0 [ 58.923193] ? process_one_work+0x580/0x580 [ 58.923195] kthread+0xf0/0x120 [ 58.923196] ? kthread_complete_and_exit+0x20/0x20 [ 58.923198] ret_from_fork+0x1f/0x30 [ 58.923202] </TASK> Fixes: ffac9721 ("drm/display/dp_mst: Don't open code modeset checks for releasing time slots") Cc: Lyude Paul <lyude@redhat.com> Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
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- 01 Sep, 2022 4 commits
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Michał Winiarski authored
Expecting to observe a specific value, when the function responsible for setting the value has failed will lead to extra noise in test output. Use assert when the situation calls for it. Also - very small tidying up around the changed areas (whitespace). v2: Leave out the locals (drm_connector is huge) (lkp) Signed-off-by:
Michał Winiarski <michal.winiarski@intel.com> Reviewed-by:
Maíra Canal <mairacanal@riseup.net> Signed-off-by:
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Michał Winiarski authored
Negative tests can be expressed as a single parameterized test case, which highlights that we're following the same test logic (passing invalid cmdline and expecting drm_mode_parse_command_line_for_connector to fail), which improves readability. v2: s/negative/invalid to be consistent with other testcases in DRM Signed-off-by:
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Tetsuo Handa authored
Like commit c4f135d6 ("workqueue: Wrap flush_workqueue() using a macro") says, flush_scheduled_work() is dangerous and will be forbidden. We are on the way for removing all flush_scheduled_work() callers from the kernel, and this patch is for removing flush_scheduled_work() call from cadence driver. Since cdns-mhdp8546 driver uses 4 works mhdp->modeset_retry_work mhdp->hpd_work mhdp->hdcp.check_work mhdp->hdcp.prop_work I assume that flush_scheduled_work() in cdns_mhdp_remove() needs to wait for only these 4 works. Since mhdp->modeset_retry_work already uses cancel_work_sync(), I assume that flush_scheduled_work() needs to wait for only 3 works. But I came to wonder whether mhdp->hdcp.check_work should be flushed or cancelled. While flush_scheduled_work() waits for completion of works which were already queued to system_wq, mhdp->hdcp.check_work is a delayed work. That is, this work won't be queued to system_wq unless timeout expires. Current code will wait for mhdp->hdcp.check_work only if timeout already expired. If timeout is not expired yet, flush_scheduled_work() will fail to cancel mhdp->hdcp.check_work, and cdns_mhdp_hdcp_check_work() which is triggered by mhdp->hdcp.check_work will schedule hdcp->check_work, which is too late for flush_scheduled_work() to wait for completion of cdns_mhdp_hdcp_prop_work(). But since I couldn't get comments on how do we want to handle this race window [1], this patch chose "do nothing" for mhdp->hdcp.check_work and mhdp->hdcp.prop_work. That is, I assume that flush_scheduled_work() in cdns_mhdp_remove() needs to wait for only mhdp->hpd_work work. Link: https://lkml.kernel.org/r/943273cb-c2ec-24e3-5edb-64eacc6e2d30@I-love.SAKURA.ne.jp [1] Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by:
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Robin Murphy authored
Convert to io-pgtable's bulk {map,unmap}_pages() APIs, to help the old single-page interfaces eventually go away. Unmapping heap BOs still wants to be done a page at a time, but everything else can get the full benefit of the more efficient interface. Signed-off-by:Robin Murphy <robin.murphy@arm.com> Acked-by:
Alyssa Rosenzweig <alyssa@collabora.com> Reviewed-by:
Steven Price <steven.price@arm.com> Signed-off-by:
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- 30 Aug, 2022 4 commits
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Douglas Anderson authored
panel-edp changes go through the drm-misc tree (as per the "DRM PANEL DRIVERS" entry in MAINTAINERS), but ever since splitting panel-edp out of panel-simple I've been trying to keep a close eye on it. Make that official by listing me as a reviewer. Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220822105340.1.I66a9a5577f9b0af66492ef13c47bc78ed85e5d6b@changeid
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Pin-yen Lin authored
Send DP_SET_POWER_D3 command to the downstream before stopping DP, so the suspend process will not be interrupted by the HPD interrupt. Also modify the order in .atomic_enable callback to make the callbacks symmetric. Fixes: 46ca7da7 ("drm/bridge: it6505: Send DPCD SET_POWER to downstream") Signed-off-by:
Pin-yen Lin <treapking@chromium.org> Reviewed-by:
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Zheyu Ma authored
When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed. Fixes: 11632d4a ("drm/bridge: megachips: Ensure both bridges are probed before registration") Signed-off-by:
Zheyu Ma <zheyuma97@gmail.com> Signed-off-by:
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Jani Nikula authored
Add a helper for getting the DP PHY name. In the interest of caller simplicity and to avoid allocations and passing in of buffers, duplicate the const strings to return. It's a minor penalty to pay for simplicity in all the call sites. v2: Rebase, add kernel-doc, ensure non-NULL always Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/b08dc12a7e621a48ec35546d6cd1ed4b1434810d.1660553850.git.jani.nikula@intel.com
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- 29 Aug, 2022 7 commits
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Hsin-Yi Wang authored
The double reset power-on sequence is a workaround for the hardware flaw in some chip that SPI Clock output glitch and cause internal MPU unable to read firmware correctly. The sequence is suggested in ps8640 application note. Signed-off-by:
Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by:
Rock Chiu <rock.chiu@paradetech.corp-partner.google.com> Signed-off-by:
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Lucas Stach authored
There are two events that signal a real change of the link state: HPD going high means the sink is newly connected or wants the source to re-read the EDID, RX sense going low is a indication that the link has been disconnected. Ignore the other two events that also trigger interrupts, but don't need immediate attention: HPD going low does not necessarily mean the link has been lost and should not trigger a immediate read of the status. RX sense going high also does not require a detect cycle, as HPD going high is the right point in time to read the EDID. Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> (v1) Reviewed-by:
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Marek Vasut authored
The drm_of_lvds_get_data_mapping() returns either negative value on error or MEDIA_BUS_FMT_* otherwise. The check for 'ret' would also catch the positive case of MEDIA_BUS_FMT_* and lead to probe failure every time 'data-mapping' DT property is specified. Fixes: 7c4dd0a2 ("drm: of: Add drm_of_lvds_get_data_mapping") Signed-off-by:
Marek Vasut <marex@denx.de> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Sam Ravnborg <sam@ravnborg.org> To: dri-devel@lists.freedesktop.org Reviewed-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
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Marek Vasut authored
Currently the driver only handles panel directly connected to the DPI output. Handle the case where a bridge is connected past DPI output of this bridge. This could be e.g. DPI to LVDS encoder chip. Signed-off-by:
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Xin Ji authored
1. Support HDMI_I2S audio format. 2. Return 0 if there is no sink connection in .hw_param callback. Signed-off-by:
Xin Ji <xji@analogixsemi.com> Acked-by:
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Jason Wang authored
The double `the' is duplicated in the comment, remove one. Signed-off-by:
Jason Wang <wangborong@cdjrlc.com> Signed-off-by:
Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220804114751.46714-1-wangborong@cdjrlc.com
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Patrik Jakobsson authored
At some point the DRM printers started adding a newline after each print. This caused SDVO command debug printing to look weird. Fix this by using snprintf to print into a buffer which can be printed as a whole by DRM_DEBUG_KMS(). Code is heavily inspired by i915. Signed-off-by:
Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220610130925.8650-1-patrik.r.jakobsson@gmail.com
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- 26 Aug, 2022 6 commits
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Linus Walleij authored
The "ret" variable is ambiguously returning something that could be zero in the tve200_modeset_init() function, assign it an explicit error return code to make this unambiguous. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Reviewed-by:
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Marek Vasut authored
The ICN6211 is capable of deriving its internal PLL clock from either MIPI DSI HS clock, external REFCLK clock, or even internal oscillator. Currently supported is only the first option. Add support for external REFCLK clock input in addition to that. There is little difference between these options, except that in case of MIPI DSI HS clock input, the HS clock are pre-divided by a fixed /4 divider before being fed to the PLL input, while in case of external REFCLK, the RECLK clock are fed directly into the PLL input. Per exceptionally poor documentation, the REFCLK must be in range of 10..154 MHz. Signed-off-by:
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Marek Vasut authored
The ICN6211 is capable of deriving its internal PLL clock from either MIPI DSI HS clock, external REFCLK clock, or even internal oscillator. Currently supported is only the first option. Document support for external REFCLK clock input in addition to that. Signed-off-by:
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Marek Vasut authored
Fill in hs_rate and lp_rate to struct mipi_dsi_device for this bridge and adjust DSI input frequency calculations such that they expect the DSI host to configure HS clock according to hs_rate. This is an optimization for the DSI burst mode case. In case the DSI device supports DSI burst mode, it is recommended to operate the DSI interface at the highest possible HS clock frequency which the DSI device supports. This permits the DSI host to send as short as possible bursts of data on the DSI link and keep the DSI data lanes in LP mode otherwise, which reduces power consumption. Signed-off-by:
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Randy Dunlap authored
drm_mipi_dbi needs lots of DRM_KMS_HELPER support, so select that Kconfig symbol like it is done is most other uses, and the way that it was before MIPS_DBI was moved from tinydrm to its core location. Fixes these build errors: ld: drivers/gpu/drm/drm_mipi_dbi.o: in function `mipi_dbi_buf_copy': drivers/gpu/drm/drm_mipi_dbi.c:205: undefined reference to `drm_gem_fb_get_obj' ld: drivers/gpu/drm/drm_mipi_dbi.c:211: undefined reference to `drm_gem_fb_begin_cpu_access' ld: drivers/gpu/drm/drm_mipi_dbi.c:215: undefined reference to `drm_gem_fb_vmap' ld: drivers/gpu/drm/drm_mipi_dbi.c:222: undefined reference to `drm_fb_swab' ld: drivers/gpu/drm/drm_mipi_dbi.c:224: undefined reference to `drm_fb_memcpy' ld: drivers/gpu/drm/drm_mipi_dbi.c:227: undefined reference to `drm_fb_xrgb8888_to_rgb565' ld: drivers/gpu/drm/drm_mipi_dbi.c:235: undefined reference to `drm_gem_fb_vunmap' ld: drivers/gpu/drm/drm_mipi_dbi.c:237: undefined reference to `drm_gem_fb_end_cpu_access' ld: drivers/gpu/drm/drm_mipi_dbi.o: in function `mipi_dbi_dev_init_with_formats': ld: drivers/gpu/drm/drm_mipi_dbi.o:/X64/../drivers/gpu/drm/drm_mipi_dbi.c:469: undefined reference to `drm_gem_fb_create_with_dirty' Fixes: 174102f4 ("drm/tinydrm: Move mipi-dbi") Signed-off-by:
Randy Dunlap <rdunlap@infradead.org> Reported-by:
kernel test robot <lkp@intel.com> Cc: Dillon Min <dillon.minfei@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: dri-devel@lists.freedesktop.org Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by:
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Randy Dunlap authored
Use 'select' instead of 'depends on' for DRM helpers for the Ilitek ILI9341 panel driver. This is what is done in the vast majority of other cases and this makes it possible to fix a build error with drm_mipi_dbi. Fixes: 5a042273 ("drm/panel: Add ilitek ili9341 panel driver") Signed-off-by:
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