Re: [PATCH v10 3/3] drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel

From: Thierry Reding
Date: Fri Sep 16 2016 - 11:34:17 EST


On Fri, Aug 26, 2016 at 08:07:07AM +0530, Vinay Simha BN wrote:
> Add support for the JDI LT070ME05000 WUXGA DSI panel used in
> Nexus 7 2013 devices.
>
> Programming sequence for the panel is was originally found in the
> android-msm-flo-3.4-lollipop-release branch from:
> https://android.googlesource.com/kernel/msm.git
>
> And video mode setting is from dsi-panel-jdi-dualmipi1-video.dtsi
> file in:
> git://codeaurora.org/kernel/msm-3.10.git LNX.LA.3.6_rb1.27
>
> Cc: Archit Taneja <archit.taneja@xxxxxxxxx>
> Cc: Rob Clark <robdclark@xxxxxxxxx>
> Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
> Cc: John Stultz <john.stultz@xxxxxxxxxx>
> Cc: Emil Velikov <emil.l.velikov@xxxxxxxxx>
> Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>
> Signed-off-by: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
> Signed-off-by: John Stultz <john.stultz@xxxxxxxxxx>
> Signed-off-by: Vinay Simha BN <simhavcs@xxxxxxxxx>
> Tested-by: John Stultz <john.stultz@xxxxxxxxxx>
> Reviewed-by: Emil Velikov <emil.l.velikov@xxxxxxxxx>
>
> ---
> v1:
> * sumit ported to drm/panel framework, john cherry-picked to mainline,
> folded down other fixes from Vinay and Archit, vinay removed interface
> setting cmd mode, video mode panel selected
>
> v2:
> * incorporated code reviews from theiry, archit
> code style, alphabetical soring in Makefile, Kconfig, regulator_bulk,
> arrays of u8, generic helper function, documentation bindings,
>
> v3:
> * dcs backlight support added
> * tested this panel driver in nexus7 2013 device
>
> v4:
> * backlight interface added in the panel driver
> * incorporated width_mm and height_mm suggested by rob herring
>
> v5:
> * theirry review comments incorporated
> panel model naming consistent, alphabetical soring in Kconfig
> Makefile, MAX_BRIGHTNESS dropped, regulator_names, parameterize
> panel width and height, descprition for control display, cabc
> and interface setting, temporary variable removed, consistent
> error reporting and commit message
> * removed tear on/off, scanline, since these are required only
> for command mode panels
>
> v6:
> * emil review comments incorporated
> PANEL_NUM_REGULATORS dropped, return ret added at necessary
> places, if checks dropped for backlight and gpios
>
> v7:
> * emil review comments incorporated
> added ARRAY_SIZE in struct, regulator_bulk_disable in poweroff,
> gpios checks dropped.
> some returns cannot be dropped, since drm panel framework return
> type required.
>
> v8:
> * emil review commnets incorporated for jdi_panel_unprepare,
> dropped the returns (ref: panel-sharp-lq101r1sx01.c) and
> for jdi_panel_prepare(panel_on) it does not return prematurely
> and goes to poweroff if not success
> * few dev_err's for panel_init
>
> v9:
> * function drm_panel_create_dsi_backlight made as static
>
> v10:
> * proper naming conventions and sequence wrt panel datasheet
> (vddp-supply, iovcc-supply,
> enable-gpios, reset-gpios, dcdc-en-gpios)
> * GPIO_ACTIVE_LOW polarity logic for reset-gpios
> ---
> drivers/gpu/drm/panel/Kconfig | 11 +
> drivers/gpu/drm/panel/Makefile | 1 +
> drivers/gpu/drm/panel/panel-jdi-lt070me05000.c | 532 +++++++++++++++++++++++++
> 3 files changed, 544 insertions(+)
> create mode 100644 drivers/gpu/drm/panel/panel-jdi-lt070me05000.c

Applied, thanks.

Thierry

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