linux-kernel - [RFC PATCH v1 0/2]

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Date:	Tue, 31 May 2016 21:37:36 +0800
From:	Yakir Yang <ykk@...k-chips.com>
To:	Mark Yao <yzq@...k-chips.com>, Inki Dae <inki.dae@...sung.com>,
	Heiko Stuebner <heiko@...ech.de>, tfiga@...omium.org,
	Jingoo Han <jingoohan1@...il.com>
Cc:	David Airlie <airlied@...ux.ie>, daniel.vetter@...ll.ch,
	Thierry Reding <treding@...dia.com>, dianders@...omium.org,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	emil.l.velikov@...il.com, Dan Carpenter <dan.carpenter@...cle.com>,
	Yakir Yang <ykk@...k-chips.com>, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-samsung-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org
Subject: [RFC PATCH v1 0/2] 

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/

- Yakir
Thanks,


Yakir Yang (2):
  drm/rockchip: add a notify event about vblank enable/disable
  drm/rockchip: analogix: add eDP PSR function

 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c |  69 ++++++++++++++
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h |   5 +
 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    |  65 +++++++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_notify.c     | 105 +++++++++++++++++++++
 drivers/gpu/drm/rockchip/rockchip_drm_notify.h     |  33 +++++++
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c        |  96 +++++++++++++++++++
 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 +
 12 files changed, 464 insertions(+), 1 deletion(-)
 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