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2019-03-18dt-bindings: panel: td028ttec1: add backlight propertyAndreas Kemnade1-0/+2
This adds an additional backlight property as described in panel-common.txt Signed-off-by: Andreas Kemnade <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: panel-tpo-td028ttec1: add backlight supportAndreas Kemnade1-0/+10
This panel has a backlight, so fetch it from devicetree using the corresponding property as documented in panel-common.txt. It is implemented the same way as in panel-dpi.c This ensures the backlight is also disabled when the display is turned off like when doing xset dpms force off. Signed-off-by: Andreas Kemnade <[email protected]> Reviewed-by: Laurent Pinchart <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: dsi: Fix PM for display blank with paired dss_pll callsTony Lindgren1-29/+31
Currently dsi_display_init_dsi() calls dss_pll_enable() but it is not paired with dss_pll_disable() in dsi_display_uninit_dsi(). This leaves the DSS clocks enabled when the display is blanked wasting about extra 5mW of power while idle. The clock that is left on by not calling dss_pll_disable() is DSS_CLKCTRL bit 10 OPTFCLKEN_SYS_CLK that is the source clock for DSI PLL. We can fix this issue by by making the current dsi_pll_uninit() into dsi_pll_disable(). This way we can just call dss_pll_disable() from dsi_display_uninit_dsi() and the code becomes a bit easier to follow. However, we need to also consider that DSI PLL can be muxed for DVI too as pointed out by Tomi Valkeinen <[email protected]>. In the DVI case, we want to unconditionally disable the clocks. To get around this issue, we separate out the DSI lane handling from dsi_pll_enable() and dsi_pll_disable() as suggested by Tomi in an earlier experimental patch. So we must only toggle the DSI regulator based on the vdds_dsi_enabled flag from dsi_display_init_dsi() and dsi_display_uninit_dsi(). We need to make these two changes together to avoid breaking things for DVI when fixing the DSI clock handling. And this all causes a slight renumbering of the error path for dsi_display_init_dsi(). Suggested-by: Tomi Valkeinen <[email protected]> Signed-off-by: Tony Lindgren <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm: Turn bus flags macros into an enumLaurent Pinchart1-44/+64
This allows nicer kerneldoc with an easy way to reference the enum and the values. Signed-off-by: Laurent Pinchart <[email protected]> Acked-by: Daniel Vetter <[email protected]> Reviewed-by: Sam Ravnborg <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove panel-dpi driverLaurent Pinchart4-207/+0
Panels are now supported through the drm_panel infrastructure, remove the omapdrm-specific driver. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove TFP410 and DVI connector driversLaurent Pinchart5-448/+0
Those components are supported by the drm_bridge infrastructure, remove the omapdrm-specific driver. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Whitelist DT nodes to fixup with omapdss, prefixLaurent Pinchart2-8/+33
The omapdss driver patches DT at runtime to prepend an "omapdss," prefix to the compatible string of all encoders, panels and connectors. This mechanism ensures they get bound to the omapdss-specific drivers instead of generic drivers. Now that we have drm_bridge support in omapdrm, we need to selectively disable this mechanism. Add a whitelist of compatible strings to patch, and fill it with all the devices we support. They will be removed one by one once corresponding drm_bridge drivers become available and get successfully tested with omapdrm. The omapdss components load check code is updated accordingly to ignore devices managed by external bridge drivers. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Add support for drm_panelLaurent Pinchart6-20/+65
Hook up drm_panel support in the omapdrm driver. The change is relatively simply as the way has been paved by drm_bridge support already. In addition to looking up, attaching to and detaching from the panel, we only need to add panel support in the connector .get_modes() handler, take connector bus flags (set by the panel) into account, and enable/disable the panel in the encoder enable/disable operations handlers. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Add support for drm_bridgeLaurent Pinchart9-62/+145
Hook up drm_bridge support in the omapdrm driver. Despite the recent extensive preparation work, this is a rather intrusive change, as the management of outputs needs to be adapted through the driver to handle both omap_dss_device and drm_bridge. Connector creation is skipped when using a drm_bridge, as the bridge creates the connector internally. This creates issues with systems that split connector operations (such as modes retrieval and hot-plug detection) across different bridges. These systems can't be supported using drm_bridge for now (their support through the omap_dss_device infrastructure is not affected), this will be fixed in subsequent changes. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/panel: simple: Add OSD070T1718-19TS panel supportLaurent Pinchart1-0/+29
Add support for the OSD070T1718-19TS 7" 800x480 panel from One Stop Displays to the panel-simple driver. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18dt-bindings: display: Add OSD Displays OSD070T1718-19TS panel bindingLaurent Pinchart1-0/+12
The OSD Displays OSD070T1718-19TS is a 7" WVGA (800x480) 24bit RGB panel and is compatible with the simple-panel bindings. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18dt-bindings: Add vendor prefix for OSD DisplaysLaurent Pinchart1-0/+1
OSD Displays is a panel manufacturer. It has been acquired by New Vision Displays in 2015 but continues to operate under its own brand name. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Reviewed-by: Rob Herring <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/bridge: ti-tfp410: Report input bus config through bridge timingsLaurent Pinchart1-3/+74
The TFP410 supports configurable pixel clock sampling edge and data de-skew adjustments. The configuration can be set through I2C or dedicated chip pins. Report the configuration through the drm_bridge timings. As the ti-tftp410 driver doesn't support configuring the chip through I2C, we simply use the default configuration in that case. When the chip is configured through dedicated pins, we parse the configuration from DT. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Reviewed-by: Jyri Sarha <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/bridge: ti-tfp410: Add support for the powerdown GPIOLaurent Pinchart1-0/+24
The TFP410 has a powerdown pin that can be connected to a GPIO to control power saving. The DT bindings define a corresponding property, but the driver doesn't implement support for it. Fix that. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Reviewed-by: Jyri Sarha <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/bridge: ti-tfp410: Set connector type based on DT connector nodeLaurent Pinchart1-1/+7
The TI TFP410 is a DVI encoder, not a full HDMI encoder. Its output can be routed to a DVI-D connector, even if in many cases embedded systems will use an HDMI connector to carry the DVI signals. Instead of hardcoding the connector type to HDMI, retrieve the connector type from its DT node. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Reviewed-by: Jyri Sarha <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18dt-bindings: display: tfp410: Add bus parameters propertiesLaurent Pinchart1-6/+18
The TFP410 supports configuration of several input bus parameters through either the I2C port or chip pins. In the latter case, we need to specify those parameters in DT. Two new properties are added, ti,deskew to specify the data de-skew configuration (as set through the DK[3:1] pins), and pclk-sample to specify the pixel clock sampling edge (as set through the EDGE pin). Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Reviewed-by: Rob Herring <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/bridge: use bus flags in bridge timingsStefan Agner2-10/+8
The DRM bus flags convey additional information on pixel data on the bus. All current available bus flags might be of interest for a bridge. Remove the sampling_edge field and use bus_flags. In the case at hand a dumb VGA bridge needs a specific data enable polarity (DRM_BUS_FLAG_DE_LOW). Signed-off-by: Stefan Agner <[email protected]> Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm: Use new DRM_BUS_FLAG_*_(DRIVE|SAMPLE)_(POS|NEG)EDGE flagsLaurent Pinchart25-68/+77
The DRM_BUS_FLAG_PIXDATA_(POS|NEG)EDGE and DRM_BUS_FLAG_SYNC_(POS|NEG)EDGE flags are deprecated in favour of the new DRM_BUS_FLAG_PIXDATA_(DRIVE|SAMPLE)_(POS|NEG)EDGE and new DRM_BUS_FLAG_SYNC_(DRIVE|SAMPLE)_(POS|NEG)EDGE flags. Replace them through the code. This effectively changes the value of the .sampling_edge bridge timings field in the dumb-vga-dac driver. This is safe to do as no driver consumes these values yet. Signed-off-by: Laurent Pinchart <[email protected]> Acked-by: Linus Walleij <[email protected]> Reviewed-by: Stefan Agner <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm: Clarify definition of the DRM_BUS_FLAG_(PIXDATA|SYNC)_* macrosLaurent Pinchart1-4/+32
The DRM_BUS_FLAG_PIXDATA_POSEDGE and DRM_BUS_FLAG_PIXDATA_NEGEDGE macros and their DRM_BUS_FLAG_SYNC_* counterparts define on which pixel clock edge data and sync signals are driven. They are however used in some drivers to define on which pixel clock edge data and sync signals are sampled, which should usually (but not always) be the opposite edge of the driving edge. This creates confusion. Create four new macros for both PIXDATA and SYNC that explicitly state the driving and sampling edge in their name to remove the confusion. The driving macros are defined as the opposite of the sampling macros to made code simpler based on the assumption that the driving and sampling edges are opposite. Signed-off-by: Laurent Pinchart <[email protected]> Acked-by: Linus Walleij <[email protected]> Reviewed-by: Stefan Agner <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Merge omap_dss_device type and output_type fieldsLaurent Pinchart25-20/+32
The omap_dss_device type and output_type fields differ mostly for historical reasons. The output_type field is required for all devices but the display at the end of the pipeline, and must be set to OMAP_DISPLAY_TYPE_NONE for the latter. The type field is required for all devices but the internal encoder, for which it is ignored. The only reason why the output_type field must be set to OMAP_DISPLAY_TYPE_NONE for the display at the end of the pipeline is to identify omap_dss_device instances corresponding to displays. This is not documented and confusing. Clean the code by adding a new display field to the omap_dss_device structure to identify displays, and merge the type and output_type fields. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Refactor initialization sequenceLaurent Pinchart1-67/+56
The omapdrm driver initialization procedure starts by connecting all available pipelines, gathering related information (such as output and display DSS devices, and DT aliases), sorting them by alias, and finally creates all the DRM/KMS objects. When using DRM bridges instead of DSS devices, we will need to attach to the bridges before getting the aliases. As attaching to bridges requires an encoder object, we have to reorganize the initialization sequence to create encoders before getting aliases and sorting the pipelines. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Simplify OF lookup of DSS devicesLaurent Pinchart3-58/+10
Now that the direction of OF graph walk has been reversed, there's no need to lookup devices by port as we have no sink device connected through multiple sink ports. Simplify OF lookup of the DSS devices to look them up by node only. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Store pixel clock instead of full mode in DPI and SDI encodersLaurent Pinchart2-8/+7
The DPI and SDI encoders store the full videomode upon mode set, to only use the value of the pixel clock when enabling the encoder. This wastes memory. Store the pixel clock value only. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: venc: Use drm_display_mode nativelyLaurent Pinchart1-46/+44
Replace internal usage of struct videomode with struct drm_display_mode in order to avoid converting needlessly between the data structures. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Pass drm_display_mode to .check_timings() and .set_timings()Laurent Pinchart9-48/+46
The omap_dss_device .check_timings() and .set_timings() operations operate on struct videomode, while the DRM API operates on struct drm_display_mode. This forces conversion from to videomode in the callers. While that's not a problem per se, it creates a difference with the drm_bridge API. Replace the videomode parameter to the .check_timings() and .set_timings() operations with a drm_display_mode. This pushed the conversion to videomode down to the DSS devices in some cases. If needed they will be converted to operate on drm_display_mode natively. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Factor out common mode validation codeLaurent Pinchart3-45/+44
The encoder .atomic_check() and connector .mode_valid() operations both walk through the dss devices in the pipeline to validate the mode. Factor out the common code in a new omap_drm_connector_mode_fixup() function. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: venc: Simplify mode setting by caching configurationLaurent Pinchart1-34/+34
The mode setting handler of the VENC stores the video mode internally, to then convert it to a configuration when programming the hardware. The stored mode is otherwise unused. Cache the configuration directly instead. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Move DISPC timing checks to CRTC .mode_valid() operationLaurent Pinchart3-12/+9
The DISPC timings checks relate to the CRTC, but they're performed in the encoder and connector .atomic_check() and .mode_valid() operations. Move them to the CRTC .mode_valid() operation. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove src field from omap_dss_device structureLaurent Pinchart2-14/+1
The field is only used to check whether the device is connected, and we can do so by checking the dss field instead. Remove the src field. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Notify all devices in the pipeline of output disconnectionLaurent Pinchart1-12/+16
For HDMI pipelines, when the output gets disconnected the device handling CEC needs to be notified. Instead of guessing which device that would be (and sometimes getting it wrong), notify all devices in the pipeline. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: panel-dsi-cm: Store source pointer internallyLaurent Pinchart1-26/+29
The source pointer will be removed to the omap_dss_device structure. Store it internally in the DSI panel driver data. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Don't store display pointer in omap_connector structureLaurent Pinchart1-18/+13
Display pipelines based on drm_bridge are handled from the bridge closest to the CRTC. To move to that model we thus need to transition away from walking pipelines in the other direction, and from accessing the device at the end of the pipeline when possible. Remove most accesses to the display device from the omap_connector implementation, and don't store it in the omap_connector structure. - For debug messages we can simply use the connector name instead. - For type checks we can use the drm_connector type. - For operation lookup we can start at the other end of the pipeline and locate the last matching device. The display device is still passed to the connector init function in order to find its type, which requires access to the end of the pipeline. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Move display alias ID to omap_drm_pipelineLaurent Pinchart4-6/+8
The DT bindings for the OMAP DSS allow assigning numerical IDs to display outputs through display entries in the alias node. The driver uses this information to sort pipelines according to the order specified in DT, making it possible for a system to give a priority order to outputs. Retrieval of the alias ID is done when initializing display dss devices. That code will be removed when moving to drm_bridge and drm_panel. Move retrieval of the alias ID to display pipeline connection time and store it in the pipeline structure instead to keep the feature. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Don't pass display pointer to encoder init functionLaurent Pinchart3-7/+3
The display isn't used by the encoder implementation, don't pass it to the initialization function and store it internally needlessly. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: venc: List both PAL and NTSC modesLaurent Pinchart1-6/+19
The TV encoder supports both PAL and NTSC modes, but when queried for the list of modes it supports, only the currently selected mode is reported. Fix it and report the two modes unconditionally. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Add a dss device operation flag for .get_modes()Laurent Pinchart11-5/+16
Instead of manually iterating over the dss devices in the pipeline to find the first one that implements the .get_modes() operation, add a new operation flag for .get_modes() and use the omap_connector_find_device() helper function to locate the right dss device. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Merge display .get_modes() and .get_size() operationsLaurent Pinchart3-27/+5
Now that the .get_modes() operations takes a drm_connector and fills it with modes, it becomes easy to fill display information in the same operation without requiring a separate .get_size() opearation. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Expose DRM modes instead of timings in display devicesLaurent Pinchart12-61/+80
omap_dss_device operations expose fixed video timings through a .get_timings() operation that return a single timing for the device. To prepare for the move to drm_bridge, modify the API to instead add DRM modes directly to the connector. As this puts more burden on display devices, we also create a helper function for panels to add a single DRM mode from the panel video timings. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Factor out common init/cleanup code for output devicesLaurent Pinchart8-87/+36
All the internal encoders share common init and cleanup code. Factor it out to separate functions. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove omap_dss_device dst fieldLaurent Pinchart2-5/+2
The field is only used in a safety check during device connection/disconnection, where the src field can be easily used instead. Remove it and use src. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Reverse direction of the DSS device enable/disable operationsLaurent Pinchart24-337/+171
The omapdrm and omapdss drivers are architectured based on display pipelines made of multiple components handled from sink (display) to source (DSS output). This is incompatible with the DRM bridge and panel APIs that handle components from source to sink. Reconcile the omapdrm and omapdss drivers with the DRM bridge and panel model by reversing the direction of the DSS device .enable() and .disable() operations. This completes the move to the DRM bridge model, with the notable exception of the DSI pipelines that will require more work. We also adapt the omapdss shutdown handler dss_shutdown() to shut down all active pipelines starting from the pipeline output device instead of the display device. As a consequence the for_each_dss_display() macro isn't used and can be removed, and the omapdss_device_get_next() function underlying the macro can be simplified to search for output devices only. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove enable checks from display .enable() and .remove()Laurent Pinchart14-64/+25
The displays (connectors, panels and encoders) bail out from their .enable() and .disable() handlers if the dss device is already enabled or disabled. Those safety checks are not needed when the functions are called through the omapdss_device_ops, as the .enable() and .disable() handlers are called from the DRM atomic helpers that already guarantee that no double enabling or disabling can occur. However, the handlers are also called directly from the .remove() handler. While this shouldn't be needed either as the modules can't be removed as long as the device is in use, it's still a good practice to disable the device explicitly. There is currently a safety check in .remove() in some drivers but not all of them. Remove the safety checks from the .enable() and .disable() handlers, and add missing ones in the .remove() handler. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove connection checks from display .enable() and .remove()Laurent Pinchart6-35/+10
The displays (connectors, panels and encoders) return an error from their .enable() handler when the dss device is not connected. They also disconnect the dss device explicitly from their .remove() handler if it is still connected. Those safety checks are not needed: - The .enable() handler is called from code paths that access the dss devices chain from the display device, which is set to NULL when the device isn't connected. - The .remove() handler can only be called when unloading the module as the driver has the suppress_bind_attrs attribute set, and a reference to the module is taken when constructing the dss devices chain, so the module can only be unloaded when the dss device is disconnected. Remove the safety checks. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove connection checks from internal encoders .enable()Laurent Pinchart7-98/+7
The internal encoders return an error from their .enable() handler when their are not connected to a dss manager. As the flag used is set and cleared in the connect and disconnect handlers, this effectively checks whether the omap_dss_device is connected. The .enable() handler is called from code paths that access the dss devices chain from the display device, which is set to NULL when the device isn't connected, making it impossible to access the device in that case. The safety check is thus not needed, remove it. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Move common display enable/disable code to encoderLaurent Pinchart12-161/+32
All .enable() and .disable() handlers for panels and connectors share common code that validates and updates the device's state. Move it to common locations in the omap_encoder_enable() and omap_encoder_disable() handlers. The enabled check in the .disable() handler is left untouched, it will be addressed separately. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Use atomic suspend/resume helpersLaurent Pinchart2-51/+2
Instead of rolling out custom suspend/resume implementations based on state information stored in the driver's data structures, use the atomic suspend/resume helpers that rely on a DRM atomic state object. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: venc: Remove wss_data field from venc_device structureLaurent Pinchart1-10/+1
The venc_device structure wss_data field is set to 0 and never otherwise modified, remove it. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove unused kobj field from struct omap_dss_deviceLaurent Pinchart1-2/+0
The kobj field from struct omap_dss_device is not used. Remove it. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/omap: Remove declaration of nonexisting functionLaurent Pinchart1-2/+0
The omap_connector_attached_encoder() doesn't exist anymore, remove its declaration from omap_connector.h. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Tested-by: Sebastian Reichel <[email protected]> Reviewed-by: Tomi Valkeinen <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>
2019-03-18drm/atomic: Constify mode argument to mode_valid_path()Laurent Pinchart1-2/+2
The mode_valid_path() function validates the mode it receives without ever modifying it. Constify the mode pointer argument to make that explicit. Signed-off-by: Laurent Pinchart <[email protected]> Reviewed-by: Ville Syrjälä <[email protected]> Signed-off-by: Tomi Valkeinen <[email protected]>