linux-kernel - [RFC PATCH v2 0/3]

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Date:	Thu,  2 Jun 2016 20:57:08 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Mark Yao <yzq@...k-chips.com>, Heiko Stuebner <heiko@...ech.de>,
	tfiga@...omium.org
Cc:	David Airlie <airlied@...ux.ie>, daniel.vetter@...ll.ch,
	Thierry Reding <treding@...dia.com>, dianders@...omium.org,
	Yakir Yang <ykk@...k-chips.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-rockchip@...ts.infradead.org
Subject: [RFC PATCH v2 0/3] 

The full name of PSR is Panel Self Refresh, panel device could refresh
itself with the hardware framebuffer in panel, this would make a lots
of sense to save the power consumption.

For example, when desktop haven't change the context for a long time,
then we could refresh the data to the hardware framebuffer of panel,
and then let panel enter into PSR mode. After that system could poweroff
the LCDC controller and eDP controller, just let panel refresh the screen
by itself.

It's hard to decide when panel should enter into PSR or exit from PSR, in
this time I chose to let the drm_vblank enable/disable event driver the PSR.

This thread is based on Mark's RK3399 VOP thread[0] and my RK3399 eDP
thread[1].

[0]: https://patchwork.kernel.org/patch/8886041/
[1]: https://patchwork.kernel.org/patch/9132713/

BR.
- Yakir


Changes in v2:
- Introduce in v2, splite the common Analogix DP changes out
- introduce in v2, split VOP line flag changes out
- Remove vblank notify out (Daniel)
- Create a psr_active() callback in vop data struct.

Yakir Yang (3):
  drm: bridge/analogix_dp: add the PSR function support
  drm/rockchip: vop: add line flag function support
  drm/rockchip: analogix_dp: add PSR support

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c |  69 ++++++++++++++
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |   4 +
 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c  |  54 +++++++++++
 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.h  |  28 ++++++
 drivers/gpu/drm/rockchip/Makefile                  |   2 +-
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c    |  64 ++++++++++++-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.h        |   7 ++
 drivers/gpu/drm/rockchip/rockchip_drm_notify.c     |  54 +++++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_notify.h     |  23 +++++
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c        | 104 +++++++++++++++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_vop.h        |   3 +
 drivers/gpu/drm/rockchip/rockchip_vop_reg.c        |   2 +
 include/drm/bridge/analogix_dp.h                   |   3 +
 13 files changed, 415 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_notify.c
 create mode 100644 drivers/gpu/drm/rockchip/rockchip_drm_notify.h

-- 
1.9.1