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SubjectRe: [Linux-stm32] [PATCH v4 0/4] Genericize DW MIPI DSI bridge and add i.MX 6 driver
Date
On Mon, 02 Dec 2019, Adrian Ratiu <adrian.ratiu@collabora.com> 
wrote:
> Having a generic Synopsis DesignWare MIPI-DSI host controller
> bridge driver is a very good idea, however the current
> implementation has hardcoded quite a lot of the register layouts
> used by the two supported SoC vendors, STM and Rockchip, which
> use IP cores v1.30 and v1.31.
>
> This makes it hard to support other SoC vendors like the FSL/NXP
> i.MX 6 which use older v1.01 cores or future versions because,
> based on history, layout changes should also be expected in new
> DSI versions / SoCs.
>
> This patch series converts the bridge and platform drivers to
> access registers via generic regmap APIs and allows each
> platform driver to configure its register layout via struct
> reg_fields, then adds support for the host controller found on
> i.MX 6.
>
> I only have i.MX hardware with MIPI-DSI panel and relevant
> documentation available for testing so I'll really appreciate it
> if someone could test the series on Rockchip and
> STM... eyeballing register fields could only get me so far, so
> sorry in advance for any breakage!
>
> Many thanks to Boris Brezillon <boris.brezillon@collabora.com>
> for suggesting the regmap solution and to Liu Ying
> <Ying.Liu@freescale.com> for doing the initial i.MX platform
> driver implementation.
>
> This series applies on top of latest linux-next tree,
> next-20191202.
>
> v3 -> v4:
> * Added commmit message to dt-binding patch (Neil) * Converted
> the dt-binding to yaml dt-schema format (Neil) * Small DT node
> + driver fixes (Rob) * Renamed platform driver to reflect it's
> only for i.MX v6 (Fabio) * Added small panel example to the
> host controller DT binding
>
> v2 -> v3:
> * Added const declarations to dw-mipi-dsi.c structs (Emil) *
> Fixed Reviewed-by tags and cc'd some more relevant ML (Emil)
>
> v1 -> v2:
> * Moved register definitions & regmap initialization into
> bridge module. Platform drivers get the regmap via plat_data
> after calling the bridge probe (Emil).

I've been told I forgot to explicitly CC some of the maintainers,
sorry about that! Added a few more persons to CC.

>
> Adrian Ratiu (4):
> drm: bridge: dw_mipi_dsi: access registers via a regmap
> drm: bridge: dw_mipi_dsi: abstract register access using reg_fields
> drm: imx: Add i.MX 6 MIPI DSI host driver
> dt-bindings: display: add i.MX6 MIPI DSI host controller doc
>
> .../display/imx/fsl,mipi-dsi-imx6.yaml | 136 ++++
> drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 699 +++++++++++++-----
> drivers/gpu/drm/imx/Kconfig | 7 +
> drivers/gpu/drm/imx/Makefile | 1 +
> drivers/gpu/drm/imx/dw_mipi_dsi-imx6.c | 378 ++++++++++
> .../gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 17 +-
> drivers/gpu/drm/stm/dw_mipi_dsi-stm.c | 34 +-
> include/drm/bridge/dw_mipi_dsi.h | 2 +-
> 8 files changed, 1067 insertions(+), 207 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml
> create mode 100644 drivers/gpu/drm/imx/dw_mipi_dsi-imx6.c
>
> --
> 2.24.0
>
> _______________________________________________
> Linux-stm32 mailing list
> Linux-stm32@st-md-mailman.stormreply.com
> https://st-md-mailman.stormreply.com/mailman/listinfo/linux-stm32

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