kernel/linux.git/drivers/gpu/drm/msm/dp/dp_parser.c, branch v5.18

drm/msm/dp: support finding next bridge even for DP interfaces

2022-02-19T02:31:36+00:00

It is possible to supply display-connector (bridge) to the DP interface, add support for parsing it too. Signed-off-by: Dmitry Baryshkov Tested-by: Kuogee Hsieh Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20220211224006.1797846-4-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov

drm/msm/dp: support attaching bridges to the DP encoder

2022-02-19T02:31:12+00:00

Currently DP driver will allocate panel bridge for eDP panels. This supports only the following topology: - eDP encoder ⇒ eDP panel (wrapped using panel-bridge) Simplify this code to just check if there is any next bridge in the chain (be it a panel bridge or regular bridge). Rename panel_bridge field to next_bridge accordingly. This allows one to use e.g. one of the following display topologies: - eDP encoder ⇒ ptn3460 ⇒ fixed LVDS panel - eDP encoder ⇒ ptn3460 ⇒ LVDS connector with EDID lines for panel autodetect - eDP encoder ⇒ ptn3460 ⇒ THC63LVD1024 ⇒ DPI panel. - eDP encoder ⇒ LT8912 ⇒ DSI panel Signed-off-by: Dmitry Baryshkov Tested-by: Kuogee Hsieh Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20220211224006.1797846-3-dmitry.baryshkov@linaro.org Signed-off-by: Dmitry Baryshkov

drm/msm/dp: fix missing #include

2021-10-26T16:31:24+00:00

Some randconfig builds fail when drm/drm_bridge.h is not included implicitly in this file: drivers/gpu/drm/msm/dp/dp_parser.c:279:25: error: implicit declaration of function 'devm_drm_panel_bridge_add' [-Werror,-Wimplicit-function-declaration] parser->panel_bridge = devm_drm_panel_bridge_add(dev, panel); Fixes: 4b296d15b355 ("drm/msm/dp: Allow attaching a drm_panel") Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20211026083254.3396322-1-arnd@kernel.org Signed-off-by: Rob Clark

drm/msm/dp: Allow attaching a drm_panel

2021-10-18T21:28:30+00:00

eDP panels might need some power sequencing and backlight management, so make it possible to associate a drm_panel with an eDP instance and prepare and enable the panel accordingly. Now that we know which hardware instance is DP and which is eDP, parser->parse() is passed the connector_type and the parser is limited to only search for a panel in the eDP case. Signed-off-by: Bjorn Andersson Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20211016221843.2167329-5-bjorn.andersson@linaro.org Signed-off-by: Rob Clark

drm/msm/dp: Allow sub-regions to be specified in DT

2021-10-15T23:35:39+00:00

Not all platforms has P0 at an offset of 0x1000 from the base address, so add support for specifying each sub-region in DT. The code falls back to the predefined offsets in the case that only a single reg is specified, in order to support existing DT. Reviewed-by: Stephen Boyd Reviewed-by: Abhinav Kumar Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20211001174400.981707-6-bjorn.andersson@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Rob Clark

drm/msm/dp: Store each subblock in the io region

2021-10-15T20:26:34+00:00

Not all platforms has DP_P0 at offset 0x1000 from the beginning of the DP block. So split the dss_io_data memory region into a set of sub-regions, to make it possible in the next patch to specify each of the sub-regions individually. Reviewed-by: Stephen Boyd Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20211001174400.981707-5-bjorn.andersson@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Rob Clark

drm/msm/dp: Refactor ioremap wrapper

2021-10-15T20:26:34+00:00

In order to deal with multiple memory ranges in the following commit change the ioremap wrapper to not poke directly into the dss_io_data struct. While at it, devm_ioremap_resource() already prints useful error messages on failure, so omit the unnecessary prints from the caller. Signed-off-by: Bjorn Andersson Reviewed-by: Stephen Boyd Link: https://lore.kernel.org/r/20211001174400.981707-4-bjorn.andersson@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Rob Clark

drm/msm/dp: Use devres for ioremap()

2021-10-15T20:26:34+00:00

The non-devres version of ioremap is used, which requires manual cleanup. But the code paths leading here is mixed with other devres users, so rely on this for ioremap as well to simplify the code. Reviewed-by: Abhinav Kumar Reviewed-by: Stephen Boyd Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20211001174400.981707-3-bjorn.andersson@linaro.org Signed-off-by: Dmitry Baryshkov Signed-off-by: Rob Clark

drm/msm/dp: Use qmp phy for DP PLL and PHY

2020-09-15T17:54:35+00:00

Make the necessary changes to the DP driver to use the qmp phy from the common phy framework instead of rolling our own in the drm subsystem. This also removes the PLL code and adds proper includes so things build. Cc: Jeykumar Sankaran Cc: Chandan Uddaraju Cc: Vara Reddy Cc: Tanmay Shah Cc: Bjorn Andersson Cc: Manu Gautam Cc: Sandeep Maheswaram Cc: Douglas Anderson Cc: Sean Paul Cc: Jonathan Marek Cc: Dmitry Baryshkov Cc: Rob Clark Signed-off-by: Stephen Boyd Signed-off-by: Rob Clark

drm/msm/dp: Add DP compliance tests on Snapdragon Chipsets

2020-09-15T17:54:34+00:00

add event thread to execute events serially from event queue. Also timeout mode is supported which allow an event be deferred to be executed at later time. Both link and phy compliant tests had been done successfully. Changes in v2: -- Fix potential deadlock by removing redundant connect_mutex -- Check and enable link clock during modeset -- Drop unused code and fix function prototypes. -- set sink power to normal operation state (D0) before DPCD read Changes in v3: -- push idle pattern at main link before timing generator off -- add timeout handles for both connect and disconnect Changes in v4: -- add ST_SUSPEND_PENDING to handles suspend/modeset test operations -- clear dp phy aux interrupt status when ERR_DPPHY_AUX error -- send segment addr during edid read -- clear bpp depth before MISC register write Changes in v5: -- add ST_SUSPENDED to fix crash at resume Changes in v6: -- at msm_dp_display_enable() do not return until resume_done to avoid kms commit timeout Signed-off-by: Kuogee Hsieh Signed-off-by: Rob Clark