[PATCH v8 0/3] Add RZ/G2L DSI driver

[Biju Das]

Gentle ping.

Cheers,
Biju

> Subject: [PATCH v8 0/3] Add RZ/G2L DSI driver
> 
> This patch series aims to support the MIPI DSI encoder found in the
> RZ/G2L SoC. It currently supports DSI video mode only.
> 
> This unit supports MIPI Alliance Specification for Display Serial
> Interface (DSI) Specification. This unit provides a solution for
> transmitting MIPI DSI compliant digital video and packets. Normative
> References are below.
> * MIPI Alliance Specification for Display Serial Interface Version
> 1.3.1
> * MIPI Alliance Specification for D-PHY Version 2.1
> 
> The following are key features of this unit.
> 
> * 1 channel
> * The number of Lane: 4-lane
> * Support up to Full HD (1920 × 1080), 60 fps (RGB888)
> * Maximum Bandwidth: 1.5 Gbps per lane
> * Support Output Data Format: RGB666 / RGB888
> 
> This patch series is based on drm_misc and patches from drm/du/next
> [1]
> 
> 
> v7->v8:
>  * Added Rb tag from Laurent.
>  * Added hsfreq_max to struct rzg2l_mipi_dsi_timings.
>  * Removed enums rzg2l_mipi_dsi_dphy_timings.
>  * Replaced if else with for loop for finding dphy_timings
>    based on hsfreq.
>  * Removed checking "number of lanes capability" from rzg2l_mipi_dsi_
>    startup() and added patch#3 for handling it in probe() and
> enforcing
>    it in rzg2l_mipi_dsi_host_attach().
>  * Added Labels with an "err_" prefix.
> 	out_pm_put->err_pm_put
> 	out_assert_rst_and_stop_clocks->err_stop
> 	out_stop_hs_clock->err_stop_clock
> 	out_pm_disable->err_pm_disable
>  * Added error message for lane check in rzg2l_mipi_dsi_host_attach()
>  * Replaced dev_warn->dev_err for the format error in
> rzg2l_mipi_dsi_host
>    _attach(). Added missing "\n" and print the format for debugging.
> v6->v7:
>  * Added rzg2l_mipi_dsi_stop() counterpart of
> rzg2l_mipi_dsi_startup().
>  * Error labels are named according to the cleanup operation they
> perform.
>  * Restored Max lane capability read after dphy timing initialization
>    as per the guide lines from SoC design team.
>  * Added recommended lut values for the Global Operation Timing
>    parameters for MIPI DPHY.
> v5->v6:
>  * Updated commit description
>  * Moved handling of arst and prst from rzg2l_mipi_dsi_startup-
> >runtime
>    PM suspend/resume handlers.
>  * Max lane capability read at probe(), and enforced in
>    rzg2l_mipi_dsi_host_attach()
>  * Simplified vich1ppsetr setting.
>  * Renamed hsclk_running_mode,hsclk_mode->is_clk_cont.
>  * Fixed typo in probe error message(arst->rst).
>  * Reordered DRM bridge initaization in probe()
>  * Updated typo in e-mail address.
> v4->v5:
>  * Added Ack from Sam.
>  * Added a trivial change, replaced rzg2l_mipi_dsi_parse_dt()
>    with drm_of_get_data_lanes_count_ep() in probe.
> v3->v4:
>  * Updated error handling in rzg2l_mipi_dsi_startup() and
> rzg2l_mipi_dsi_atomic_enable().
> v2->v3:
>  * Added Rb tag from Geert and Laurent
>  * Fixed the typo "Receive" -> "transmit"
>  * Added accepible values for data-lanes
>  * Sorted Header file in the example
>  * Added SoC specific compaible along with generic one.
>  * pass rzg2l_mipi_dsi pointer to {Link,Phy} register rd/wr function
> instead
>    of the memory pointer
>  * Fixed the comment in rzg2l_mipi_dsi_startup()
>  * Removed unnecessary dbg message from rzg2l_mipi_dsi_start_video()
>  * DRM bridge parameter initialization moved to probe
>  * Replaced dev_dbg->dev_err in rzg2l_mipi_dsi_parse_dt()
>  * Inserted the missing blank lane after return in probe()
>  * Added missing MODULE_DEVICE_TABLE
>  * Added include linux/bits.h in header file
>  * Fixed various macros in header file.
>  * Reorder the make file for DSI, so that it is no more dependent
>    on RZ/G2L DU patch series.
> v1->v2:
>  * Added full path for dsi-controller.yaml
>  * Modeled DSI + D-PHY as single block and updated reg property
>  * Fixed typo D_PHY->D-PHY
>  * Updated description
>  * Added interrupts and interrupt-names and updated the example
>  * Driver rework based on dt-binding changes (DSI + D-PHY) as single
> block
>  * Replaced link_mmio and phy_mmio with mmio in struct rzg2l_mipi_dsi
>  * Replaced rzg2l_mipi_phy_write with rzg2l_mipi_dsi_phy_write
>    and rzg2l_mipi_dsi_link_write
>  * Replaced rzg2l_mipi_phy_read->rzg2l_mipi_dsi_link_read
> RFC->v1:
>  * Added a ref to dsi-controller.yaml.
>  * Added "depends on ARCH_RENESAS || COMPILE_TEST" on KCONFIG
>    and dropped DRM as it is implied by DRM_BRIDGE
>  * Used devm_reset_control_get_exclusive() for reset handle
>  * Removed bool hsclkmode from struct rzg2l_mipi_dsi
>  * Added error check for pm, using pm_runtime_resume_and_get() instead
> of
>    pm_runtime_get_sync()
>  * Added check for unsupported formats in rzg2l_mipi_dsi_host_attach()
>  * Avoided read-modify-write stopping hsclock
>  * Used devm_platform_ioremap_resource for resource allocation
>  * Removed unnecessary assert call from probe and remove.
>  * wrap the line after the PTR_ERR() in probe()
>  * Updated reset failure messages in probe
>  * Fixed the typo arstc->prstc
>  * Made hex constants to lower case.
> RFC:
>  *
> 
> 
> Biju Das (3):
>   dt-bindings: display: bridge: Document RZ/G2L MIPI DSI TX bindings
>   drm: rcar-du: Add RZ/G2L DSI driver
>   drm: rcar-du: rzg2l_mipi_dsi: Enhance device lanes check
> 
>  .../bindings/display/bridge/renesas,dsi.yaml  | 182 ++++
>  drivers/gpu/drm/rcar-du/Kconfig               |   8 +
>  drivers/gpu/drm/rcar-du/Makefile              |   2 +
>  drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c      | 816
> ++++++++++++++++++
>  drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi_regs.h | 151 ++++
>  5 files changed, 1159 insertions(+)
>  create mode 100644
> Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
>  create mode 100644 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi.c
>  create mode 100644 drivers/gpu/drm/rcar-du/rzg2l_mipi_dsi_regs.h
> 
> --
> 2.25.1