linux-stable.git/drivers/gpu/drm/bridge/Makefile, branch v5.7

drm/bridge: Add driver for the TI TPD12S015 HDMI level shifter

2020-02-26T11:31:38+00:00

The TI TPD12S015 is an HDMI level shifter and ESD protector controlled
through GPIOs. Add a DRM bridge driver for the device.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Tomi Valkeinen 
Acked-by: Sam Ravnborg 
Tested-by: Sebastian Reichel 
Reviewed-by: Sebastian Reichel 
Signed-off-by: Tomi Valkeinen 
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-17-laurent.pinchart@ideasonboard.com

drm/bridge: Add bridge driver for display connectors

2020-02-26T11:31:37+00:00

Display connectors are modelled in DT as a device node, but have so far
been handled manually in several bridge drivers. This resulted in
duplicate code in several bridge drivers, with slightly different (and
thus confusing) logics.

In order to fix this, implement a bridge driver for display connectors.
The driver centralises logic for the DVI, HDMI, VGAn composite and
S-video connectors and exposes corresponding bridge operations.

This driver in itself doesn't solve the issue completely, changes in
bridge and display controller drivers are needed to make use of the new
connector driver.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Maxime Ripard 
Reviewed-by: Boris Brezillon 
Acked-by: Sam Ravnborg 
Tested-by: Sebastian Reichel 
Reviewed-by: Sebastian Reichel 
Signed-off-by: Tomi Valkeinen 
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-16-laurent.pinchart@ideasonboard.com

drm/bridge: dumb-vga-dac: Rename driver to simple-bridge

2020-02-26T11:31:31+00:00

The dumb-vga-dac driver can support simple DRM bridges without being
limited to VGA DACs. Rename it to simple-bridge.

Signed-off-by: Laurent Pinchart 
Reviewed-by: Andrzej Hajda 
Reviewed-by: Boris Brezillon 
Acked-by: Maxime Ripard 
Acked-by: Sam Ravnborg 
Tested-by: Sebastian Reichel 
Reviewed-by: Sebastian Reichel 
Signed-off-by: Tomi Valkeinen 
Link: https://patchwork.freedesktop.org/patch/msgid/20200226112514.12455-12-laurent.pinchart@ideasonboard.com

drm/bridge: Add tc358768 driver

2020-02-10T09:49:49+00:00

Add basic support for the Toshiba TC358768 RGB to DSI bridge.
Not all the features of the TC358768 is implemented by the initial driver:
MIPI_DSI_MODE_VIDEO and MIPI_DSI_FMT_RGB888 is only supported and tested.

Only write is implemented for mipi_dsi_host_ops.transfer.

Signed-off-by: Peter Ujfalusi 
Reviewed-by: Andrzej Hajda 
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20200131111553.472-3-peter.ujfalusi@ti.com

drm/bridge: Add I2C based driver for ps8640 bridge

2020-01-22T15:45:50+00:00

This patch adds drm_bridge driver for parade DSI to eDP bridge chip.

Signed-off-by: Jitao Shi 
Reviewed-by: Daniel Kurtz 
[uli: followed API changes, removed FW update feature]
Signed-off-by: Ulrich Hecht 
Signed-off-by: Enric Balletbo i Serra 
Tested-by: Hsin-Yi Wang 
Reviewed-by: Ezequiel Garcia 
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/20191230090419.137141-3-enric.balletbo@collabora.com

drm/bridge: Repurpose lvds-encoder.c

2019-12-18T11:26:07+00:00

lvds-encoder.c implementation is also suitable for LVDS decoders,
not just LVDS encoders.
Instead of creating a new driver for addressing support for
transparent LVDS decoders, repurpose lvds-encoder.c for the greater
good with this patch.

This patch only "rebrands" the lvds-encoder.c driver, to make it
suitable for hosting LVDS decoders support. The actual support for
LVDS decoders will come with a later patch.

Signed-off-by: Fabrizio Castro 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Neil Armstrong 
Link: https://patchwork.freedesktop.org/patch/msgid/1573660292-10629-6-git-send-email-fabrizio.castro@bp.renesas.com

drm/bridge: move ANA78xx driver to analogix subdirectory

2019-11-08T09:27:26+00:00

As ANA78xx chips are designed and produced by Analogix Semiconductor,
Inc, move their driver codes into analogix subdirectory.

Signed-off-by: Icenowy Zheng 
Signed-off-by: Vasily Khoruzhick 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Torsten Duwe 
Reviewed-by: Andrzej Hajda 
Signed-off-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20191107135202.2089C68BE1@verein.lst.de

drm/bridge: tc358764: Add DSI to LVDS bridge driver

2018-07-27T07:09:57+00:00

Add a drm_bridge driver for the Toshiba TC358764 DSI to LVDS bridge.

Changes in v4:
- removed license blob,
- ordered includes,
- added error handling,
- fixed reset GPIO handling,
- added missing calls to the panel,
- custom OF graph code replaced with helpers,
- removed tc358764_poweroff from remove callback.
v5:
- fixed supply names,
- fixed broken console - added connector to fb_helper,
- added detach callback - unbinding works,
- fixed typo in error checking code,
- removed sparse bridge->encoder check - core does it already.

Signed-off-by: Andrzej Hajda 
Signed-off-by: Maciej Purski 
[ a.hajda@samsung.com: v4, v5 ]
Signed-off-by: Andrzej Hajda 
Reviewed-by: Archit Taneja 
Link: https://patchwork.freedesktop.org/patch/msgid/20180725154644.25412-6-a.hajda@samsung.com

drm/bridge: add support for sn65dsi86 bridge driver

2018-07-27T06:43:36+00:00

Add support for TI's sn65dsi86 dsi2edp bridge chip.
The chip converts DSI transmitted signal to eDP signal,
which is fed to the connected eDP panel.

This chip can be controlled via either i2c interface or
dsi interface. Currently in driver all the control registers
are being accessed through i2c interface only.
Also as of now HPD support has not been added to bridge
chip driver.

Changes in v1:
 - Split the dt-bindings and the driver support into separate patches
   (Andrzej Hajda).
 - Use of gpiod APIs to parse and configure gpios instead of obsolete ones
   (Andrzej Hajda).
 - Use macros to define the register offsets (Andrzej Hajda).

Changes in v2:
 - Separate out edp panel specific HW resource handling from bridge
   driver and create a separate edp panel drivers to handle panel
   specific mode information and HW resources (Sean Paul).
 - Replace pr_* APIs to DRM_* APIs to log error or debug information
   (Sean Paul).
 - Remove some of the unnecessary structure/variable from driver (Sean
   Paul).
 - Rename the function and structure prefix "sn65dsi86" to "ti_sn_bridge"
   (Sean Paul / Rob Herring).
 - Remove most of the hard-coding and modified the bridge init sequence
   based on current mode (Sean Paul).
 - Remove the existing function to retrieve the EDID data and
   implemented this as an i2c_adapter and use drm_get_edid() (Sean Paul).
 - Remove the dummy irq handler implementation, will add back the
   proper irq handling later (Sean Paul).
 - Capture the required enable gpios in a single array based on dt entry
   instead of having individual descriptor for each gpio (Sean Paul).

Changes in v3:
 - Remove usage of irq_gpio and replace it as "interrupts" property (Rob
   Herring).
 - Remove the unnecessary header file inclusions (Sean Paul).
 - Rearrange the header files in alphabetical order (Sean Paul).
 - Use regmap interface to perform i2c transactions.
 - Update Copyright/License field and address other review comments
   (Jordan Crouse).

Changes in v4:
 - Update License/Copyright (Sean Paul).
 - Add Kconfig and Makefile changes (Sean Paul).
 - Drop i2c gpio handling from this bridge driver, since i2c sda/scl gpios
   will be handled by i2c master.
 - Update required supplies names.
 - Remove unnecessary goto statements (Sean Paul).
 - Add mutex lock to power_ctrl API to avoid race conditions (Sean
   Paul).
 - Add support to parse reference clk frequency from dt(optional).
 - Update the bridge chip enable/disable sequence.

Changes in v5:
 - Fixed Kbuild test service reported warnings.

Changes in v6:
 - Use PM runtime based ref-counting instead of local ref_count mechanism
   (Stephen Boyd).
 - Clean up some debug logs and indentations (Sean Paul).
 - Simplify dp rate calculation (Sean Paul).
 - Add support to configure refclk based on input REFCLK pin or DACP/N
   pin (Stephen Boyd).

Changes in v7:
 - Use static supply entries instead of dynamic allocation (Andrzej
   Hajda).
 - Defer bridge driver probe if panel is not probed (Andrzej Hajda).
 - Update of_graph APIs for correct node reference management. (Andrzej
   Hajda).
 - Remove local display_mode object (Andrzej Hajda).
 - Remove version id check function from driver.

Changes in v8:
 - Move dsi register/attach function to bridge driver probe (Andrzej
   Hajda).
 - Introduce a new helper function to write 16bit words into consecutive
   registers (Andrzej Hajda).
 - Remove unnecessary macros (Andrzej Hajda).

Changes in v9:
 - Remove dsi register/attach from bridge probe, since dsi dev register
   completion also waits for any panel or bridge to get added. This creates
   deadlock situation when bridge driver calls dsi dev register and
   attach before bridge add, in its probe function.
 - Fix issues faced during testing of bridge driver on actual HW.
 - Remove unnecessary initializations (Stephen Boyd).
 - Use local refclk lut size instead of global macro (Sean Paul).

Changes in v10:
 - Use refclk to determine if continuous dsi clock is needed or not.

Changes in v11:
 - Read DPPLL_SRC register to determine continuous clock instead of
   using refclk handle (Stephen Boyd).

Changes in v12:
 - Explain in comment as in why dsi dev registration is done in
   bridge_attach (Andrzej Hajda).
 - Move HPD disable to bridge_pre_enable (Andrzej Hajda).
 - Make panel/DDC exclusive until HPD support is added (Andrzej Hajda).

Changes in v13:
 - eDP panels report EDID via DP-AUX channel, so remove support for
   dedicated DDC line (Andrzej Hajda).

Changes in v14:
 - Remove unnecessary drm_panel checks (Andrzej Hajda).

Signed-off-by: Sandeep Panda 
Reviewed-by: Andrzej Hajda 
Signed-off-by: Andrzej Hajda 
Link: https://patchwork.freedesktop.org/patch/msgid/1532069642-21392-1-git-send-email-spanda@codeaurora.org

drm/bridge: Add Cadence DSI driver

2018-04-23T17:12:18+00:00

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 
Reviewed-by: Andrzej Hajda 
Acked-by: Eric Anholt 
Reviewed-by: Archit Taneja 
Link: https://patchwork.freedesktop.org/patch/msgid/20180421070846.10330-1-boris.brezillon@bootlin.com