- 01 Mar, 2017 29 commits
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John Keeping authored
The multiplication ratio for the PLL is required to be even due to the use of a "by 2 pre-scaler". Currently we are likely to end up with an odd multiplier even though there is an equivalent set of parameters with an even multiplier. For example, using the 324MHz bit rate with a reference clock of 24MHz we end up with M = 27, N = 2 whereas the example in the PHY databook gives M = 54, N = 4 for this bit rate and reference clock. By walking down through the available multiplier instead of up we are more likely to hit an even multiplier. With the above example we do now get M = 54, N = 4 as given by the databook. While doing this, change the loop limits to encode the actual limits on the divisor, which are: 40MHz >= (pllref / N) >= 5MHz Signed-off-by:
John Keeping <john@metanate.com> Reviewed-by:
Sean Paul <seanpaul@chromium.org> Signed-off-by:
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John Keeping authored
These values are specified as constant time periods but the PHY configuration is in terms of the current lane byte clock so using constant values guarantees that the timings will be outside the specification with some display configurations. Derive the necessary configuration from the byte clock in order to ensure that the PHY configuration is correct. Signed-off-by:
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John Keeping authored
The bias, bandgap and PLL should all be configured before we enable them. Signed-off-by:
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John Keeping authored
Also don't power up the DSI host at this point since this is not necessary in order to configure the PHY and we do so later when selecting video or command mode. Signed-off-by:
Chris Zhong <zyw@rock-chips.com> Reviewed-by:
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John Keeping authored
This clock rate is derived from the PHY PLL, so it should be calculated dynamically. This calculation is the same as that used by the vendor kernel and ensures that the escape clock runs at <20MHz as required by the MIPI specification. Signed-off-by:
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John Keeping authored
Panel drivers may want to sent commands during the disable function, for example MIPI_DCS_SET_DISPLAY_OFF before the video signal ends. In order to send commands we need to write to registers, so pclk must be enabled. While changing this, remove the unnecessary code after the panel unprepare call which seems to be a workaround for a specific panel and thus belongs in the panel driver. Signed-off-by:
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John Keeping authored
Some panels need to be configured with commands sent over the MIPI link, which they will do in the prepare hook. Call this after the PHY has been initialized so that we are able to send commands to the panel. Signed-off-by:
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John Keeping authored
By dereferencing the MIPI command buffer as a u32* we rely on it being correctly aligned on ARM, but this may not be the case. Copy it into a stack variable that will be correctly aligned. Signed-off-by:
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John Keeping authored
Requesting the HS clock from the PHY before we initialize it causes an invalid signal to be sent out since the input clock is not yet configured. The PHY databook suggests only asserting this signal when performing HS transfers, so let's do that. Signed-off-by:
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John Keeping authored
Instead of always sending commands in LP mode, respect the MIPI_DSI_MSG_USE_LPM flag to decide how to send each message. Also request acks if MIPI_DSI_MSG_REQ_ACK is set. Signed-off-by:
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John Keeping authored
As an aid to debugging. Signed-off-by:
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John Keeping authored
As a side-effect of this, encode the endianness explicitly rather than casting a u16. Signed-off-by:
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John Keeping authored
We want to check that both the GEN_CMD_EMPTY and GEN_PLD_W_EMPTY bits are set so we can't just check "val & mask" because that will be true if either bit is set. Signed-off-by:
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John Keeping authored
In a couple of places here we use "val" for the value that is about to be written to a register but then reuse the same variable for the value of a status register before we get around to writing it. Rename the value to be written to so that we write the value we intend to and not what we have just read from the status register. Signed-off-by:
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John Keeping authored
This is not needed since we can access the mode via the CRTC from the enable hook. Also remove the "mode" field that is no longer used. Signed-off-by:
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John Keeping authored
This shows that we only use the mode from the enable function and prepares us to remove the "mode" field and the mode_set hook in the next commit. Signed-off-by:
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John Keeping authored
With atomic modesetting the hardware will be powered off when the mode_set function is called. We should configure the hardware in the enable function, which is the atomic version of "commit" so let's use the enable hook rather than commit while we're at it. Signed-off-by:
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Manasi Navare authored
If link training at a link rate optimal for a particular mode fails during modeset's atomic commit phase, then we let the modeset complete and then retry. We save the link rate value at which link training failed, update the link status property to "BAD" and use a lower link rate to prune the modes. It will redo the modeset on the current mode at lower link rate or if the current mode gets pruned due to lower link constraints then, it will send a hotplug uevent for userspace to handle it. This is also required to pass DP CTS tests 4.3.1.3, 4.3.1.4, 4.3.1.6. v9: * Use the trimmed max values of link rate/lane count based on link train fallback (Daniel Vetter) v8: * Set link_status to BAD first and then call mode_valid (Jani Nikula) v7: Remove the redundant variable in previous patch itself v6: * Obtain link rate index from fallback_link_rate using the helper intel_dp_link_rate_index (Jani Nikula) * Include fallback within intel_dp_start_link_train (Jani Nikula) v5: * Move set link status to drm core (Daniel Vetter, Jani Nikula) v4: * Add fallback support for non DDI platforms too * Set connector->link status inside set_link_status function (Jani Nikula) v3: * Set link status property to BAd unconditionally (Jani Nikula) * Dont use two separate variables link_train_failed and link_status to indicate same thing (Jani Nikula) v2: * Squashed a few patches (Jani Nikula) Acked-by:
Tony Cheng <tony.cheng@amd.com> Acked-by:
Harry Wentland <Harry.wentland@amd.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Signed-off-by:
Manasi Navare <manasi.d.navare@intel.com> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/d796cc0c2814d668a47ef43c464f9a4089d46d64.1481883920.git.jani.nikula@intel.com
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Manasi Navare authored
This fixes the kernel doc warning that was introduced in the 'commit 40ee6fbe ("drm: Add a new connector atomic property for link status")'. Description has been added for the enum values. Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so it's not necessary to call drm_debugfs_remove_files(). Additionally it uses debugfs_remove_recursive() to clean up the debugfs files, so no need to do that. Cc: robdclark@gmail.com Signed-off-by:
Noralf Trønnes <noralf@tronnes.org> Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so no need to do this explicitly. Additionally it uses debugfs_remove_recursive() to clean up the debugfs files, so no need for adding fake drm_info_node entries. Cc: daniel.vetter@intel.com Cc: jani.nikula@linux.intel.com Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so the drm_driver.debugfs_cleanup callback is not needed. Cc: airlied@linux.ie Cc: kraxel@redhat.com Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so the drm_driver.debugfs_cleanup callback is not needed. Cc: airlied@linux.ie Cc: kraxel@redhat.com Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so the drm_driver.debugfs_cleanup callback is not needed. Additionally it uses debugfs_remove_recursive() to clean up the debugfs files, so no need for adding fake drm_info_node entries. Cc: bskeggs@redhat.com Signed-off-by:
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Noralf Trønnes authored
drm_debugfs_cleanup() now removes all minor->debugfs_list entries automatically, so no need to do this explicitly. Additionally it uses debugfs_remove_recursive() to clean up the debugfs files, so no need for adding fake drm_info_node entries. And finally there's no need to clean up on error, drm_debugfs_cleanup() is called in the error path. Cc: linux@armlinux.org.uk Signed-off-by:
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Neil Armstrong authored
Add the main git entry and the drm-misc experiment git for small patches. Cc: Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Acked-by:
Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1488360018-16835-1-git-send-email-narmstrong@baylibre.com
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Joan Jani authored
Fixed the following style issues drivers/gpu/vga/vga_switcheroo.c:98: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:99: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:102: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:103: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:129: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:135: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:217: WARNING: line over 80 characters drivers/gpu/vga/vga_switcheroo.c:218: WARNING: line over 80 characters drivers/gpu/vga/vga_switcheroo.c:308: WARNING: please, no space before tabs drivers/gpu/vga/vga_switcheroo.c:340: WARNING: line over 80 characters drivers/gpu/vga/vga_switcheroo.c:1087: WARNING: Block comments use * on subsequent lines drivers/gpu/vga/vga_switcheroo.c:1087: WARNING: Block comments use a trailing */ on a separate line Signed-off-by:
Joan Jani <igiann@hotmail.com> Signed-off-by:
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Joe Perches authored
Use a more common logging style. Miscellanea: o Coalesce formats and realign arguments o Neaten a few macros now using pr_<level> Signed-off-by:
Joe Perches <joe@perches.com> Acked-by:
Rob Clark <robdclark@gmail.com> Acked-by:
Sinclair Yeh <syeh@vmware.com> Acked-by:
Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Acked-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by:
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Daniel Vetter authored
It's still just an experiment, but one lesson learned from drm-misc is that not updating MAINTAINERS just leads to confusion. And this is easy to revert. Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Mark Yao <mark.yao@rock-chips.com> Cc: Eric Anholt <eric@anholt.net> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Shawn Guo <shawnguo@kernel.org> Acked-by:
Gerd Hoffmann <kraxel@redhat.com> Acked-by:
Eric Anholt <eric@anholt.net> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
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- 28 Feb, 2017 11 commits
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Eric Anholt authored
This makes for more sensible documentation of the whole module than jumping straight into the details of display. Signed-off-by:
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Eric Anholt authored
I had written most of my comments as if I was describing the individual code files the way I used to for doxygen, while for RST we want to describe things in a more chapter/section way where there's no obvious relation to .c files. Additionally, several of the files had stub descriptions that I've taken this opportunity to extend. Signed-off-by:
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Eric Anholt authored
This doesn't yet produce coherent documentation of the module, but at least gets the kerneldoc built and somewhat glued together. Signed-off-by:
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Eric Anholt authored
I'm going to hook vc4 up to the sphinx build, so clean up its comments to not generate warnings when we do. Signed-off-by:
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Michael Zoran authored
Commonly used desktop environments such as xfce4 and gnome on debian sid can flood the graphics drivers with cursor updates. Because the current implementation is waiting for a vblank between cursor updates, this will cause the display to hang for a long time since a typical refresh rate is only 60Hz. This is unnecessary and unexpected by user mode software, so simply swap out the cursor frame buffer without waiting. Signed-off-by:
Michael Zoran <mzoran@crowfest.net> Reviewed-by:
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Gabriel Krisman Bertazi authored
Now that atomic support is implemented, enable the atomic flag. Signed-off-by:
Gabriel Krisman Bertazi <krisman@collabora.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170227204328.18761-15-krisman@collabora.co.ukSigned-off-by:
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Gabriel Krisman Bertazi authored
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Gabriel Krisman Bertazi authored
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Gabriel Krisman Bertazi authored
Now that the state objects are wired up, we can move to the final atomic handlers. Signed-off-by:
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Gabriel Krisman Bertazi authored
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Gabriel Krisman Bertazi authored
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