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drm/bridge: Add Cadence DSI driver

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Add a driver for Cadence DPI -> DSI bridge.

This driver only support a subset of Cadence DSI bridge capabilities.

This driver has been tested/debugged in a simulated environment which
explains why some of the features are missing.  Here is a
non-exhaustive list of missing features:
 * burst mode
 * DPHY init/configuration steps
 * support for additional input interfaces (SDI input)

DSI commands and non-burst video mode have been tested.

Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180421070846.10330-1-boris.brezillon@bootlin.com
This commit is contained in:
Boris Brezillon 2018-04-21 09:08:45 +02:00
parent ccaf509037
commit e19233955d
3 changed files with 1634 additions and 0 deletions
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10
drivers/gpu/drm/bridge/Kconfig
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@ -25,6 +25,16 @@ config DRM_ANALOGIX_ANX78XX
the HDMI output of an application processor to MyDP
or DisplayPort.
config DRM_CDNS_DSI
tristate "Cadence DPI/DSI bridge"
select DRM_KMS_HELPER
select DRM_MIPI_DSI
select DRM_PANEL_BRIDGE
depends on OF
help
Support Cadence DPI to DSI bridge. This is an internal
bridge and is meant to be directly embedded in a SoC.
config DRM_DUMB_VGA_DAC
tristate "Dumb VGA DAC Bridge support"
depends on OF

1
drivers/gpu/drm/bridge/Makefile
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@ -1,5 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o
obj-$(CONFIG_DRM_CDNS_DSI) += cdns-dsi.o
obj-$(CONFIG_DRM_DUMB_VGA_DAC) += dumb-vga-dac.o
obj-$(CONFIG_DRM_LVDS_ENCODER) += lvds-encoder.o
obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o

1623
drivers/gpu/drm/bridge/cdns-dsi.c Normal file
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