On 20.07.2018 08:54, Sandeep Panda wrote: > 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 <spanda@xxxxxxxxxxxxxx> I will queue both patches to drm-misc. Reviewed-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx> -- Regards Andrzej -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
