[PATCH v4 RESEND] drm/panel: add Kingdisplay kd097d04 panel driver

[Thierry Reding]

On Thu, Jan 24, 2019 at 12:51:36PM -0500, Sean Paul wrote:
> On Thu, Jan 24, 2019 at 05:18:12PM +0100, Thierry Reding wrote:
> > On Thu, Jan 24, 2019 at 12:01:55PM -0300, Ezequiel Garcia wrote:
> > > On Tue, 2018-10-30 at 10:15 +0100, Heiko Stuebner wrote:
> > > > From: Nickey Yang <nickey.yang at rock-chips.com>
> > > > 
> > > > Support Kingdisplay kd097d04 9.7" 1536x2048 TFT LCD panel,
> > > > it is a MIPI dual-DSI panel.
> > > > 
> > > > v4-resend:
> > > > - Thierry noted missing dt-bindings for v4 but forgot that he
> > > >   already had applied them one kernel release back in
> > > >   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ebc950fdff6d5f9250cd5a5a348af97f7d8508df
> > > > v4:
> > > > - address Philipp's comments
> > > >   - real range for usleep_range and
> > > >   - poweroff ordering in kingdisplay_panel_prepare
> > > >   - return value beautification in panel_probe
> > > > - update author naming for full name
> > > > v3:
> > > > - address Thierry's comments
> > > >   - error handling for init dsi writes in init
> > > >   - unconditionally remove the panel
> > > >   - don't use drm_panel_detach
> > > >   - a bit of variable signednes wiggling
> > > > - I did talk to ChromeOS people and the delays really should be as short
> > > >   as possible, so dropped the 100ms from the delay comments
> > > > v2:
> > > > - update timing + cmds from chromeos kernel
> > > > - new backlight API including switch to devm_of_find_backlight
> > > > - fix most of Sean Paul's comments
> > > >   enable/prepare tracking seems something all panels do
> > > > - document origins of the init sequence
> > > > - lanes per dsi interface to 4 (two interfaces). Matches how tegra
> > > >   and pending rockchip dual-dsi handle (dual-)dsi lanes
> > > > - spdx header instead of license boilerplate
> > > > 
> > > > Signed-off-by: Nickey Yang <nickey.yang at rock-chips.com>
> > > > Signed-off-by: Heiko Stuebner <heiko at sntech.de>
> > > 
> > > Hm, this v4 patch has been stalling here for *four full months*.
> > > 
> > > Which deity do we need to pray to get this one moving? ;-)
> > > 
> > > Seriously, can someone please apply this?
> > 
> > If you care about this driver, perhaps you'd like to review and provide
> > a Reviewed-by?
> 
> Looks good to me,
> 
> Reviewed-by: Sean Paul <sean at poorly.run>

I was aiming for a Reviewed-by from Ezequiel, but I'll take yours as
well, thanks very much.

Thierry
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