linux-kernel - Re: [RFC 0/3] DRM driver for the ATMEL High end LCD controller

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Message-ID: <1398343612.4295.66.camel@herbert.er.corscience.de>
Date:	Thu, 24 Apr 2014 14:46:52 +0200
From:	Tim Niemeyer <tim.niemeyer@...science.de>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>
Cc:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	Robert Nelson <robertcnelson@...il.com>,
	nicolas.ferre@...el.com, linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, airlied@...ux.ie,
	robdclark@...il.com, plagnioj@...osoft.com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC 0/3] DRM driver for the ATMEL High end LCD controller

Hi Boris

Am Donnerstag, den 24.04.2014, 14:14 +0200 schrieb Boris BREZILLON:
> Hi Tim,
> 
> On 23/04/2014 17:36, Tim Niemeyer wrote:
> > Hi Jean-Jacques,
> >
> > Am Freitag, den 18.04.2014, 11:45 +0200 schrieb Jean-Jacques Hiblot:
> >> Hi,
> >>
> >> this patch serie implements a simple DRM driver for the ATMEL High end LCD
> >> controller found in the SAMA5 familly. It's based on the tilcdc driver.
> >> It uses the cma_helper for memory and fbdev stuff.
> >> Your comments are welcome !
> > I applied your and Robert's patches on a 3.15-rc2 kernel and tried the
> > framebuffer device on the sama5d31-ek. Seems to work.
> >
> >> Supported features:
> >> * the base layer (the main framebuffer)
> > Tested to show a little tux png, but it's appearing only after 
> > 'echo 0 > /sys/devices/ahb.1/apb.2/f0030000.hlcdc/graphics/fb0/rotate'
> > is there missing some initializing?
> 
> Could you try to apply this http://code.bulix.org/f01kvh-86117 ?
I can't see any difference with that.

I used fbv to display the tux. With CONFIG_FRAMEBUFFER_CONSOLE=n the
display stays with a small atmel logo and u-Boot version information. If
i set CONFIG_FRAMEBUFFER_CONSOLE=y, the display is black after kernel
start and fbv just works as expected.

Best Regards,
Tim

> Best Regards,
> 
> Boris
> 
> >
> >> * a simple panel
> >> * a backlight driver
> > Tested to set brightness to 0, 20 and 255. Works.
> >
> > Thanks for your work.
> >
> > Best Regards
> > Tim
> >
> >> * structure to 'easily' add other connectors (it comes from the tilcdc)
> >>
> >> On the todo list:
> >> * support overlays as drm_planes
> >> * support for the hardware cursor
> >> * support for the SiI9022 HDMI connector (present on sama5d36ek)
> >>
> >>
> >> Jean-Jacques Hiblot (3):
> >>   atmel: drm: added drm driver for the atmel hlcd controller
> >>   atmel: drm: dt: Added DT entry for the atmel hlcdc found in the sama5
> >>   atmel: dt: Add supports for the lcdc support on the sama5d36ek
> >>
> >>  arch/arm/boot/dts/sama5d36ek.dts                   |  27 +-
> >>  arch/arm/boot/dts/sama5d3_lcd.dtsi                 |  11 +
> >>  drivers/gpu/drm/Kconfig                            |   2 +
> >>  drivers/gpu/drm/Makefile                           |   1 +
> >>  drivers/gpu/drm/atmel_hlcdc/Kconfig                |  13 +
> >>  drivers/gpu/drm/atmel_hlcdc/Makefile               |  12 +
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc.h          | 771 +++++++++++++++++++++
> >>  .../gpu/drm/atmel_hlcdc/atmel_hlcdc_backlight.c    |  92 +++
> >>  .../gpu/drm/atmel_hlcdc/atmel_hlcdc_backlight.h    |  25 +
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_crtc.c     | 702 +++++++++++++++++++
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_drv.c      | 586 ++++++++++++++++
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_drv.h      | 124 ++++
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_ovl.h      | 190 +++++
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_panel.c    | 459 ++++++++++++
> >>  drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_panel.h    |  28 +
> >>  15 files changed, 3042 insertions(+), 1 deletion(-)
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/Kconfig
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/Makefile
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc.h
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_backlight.c
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_backlight.h
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_crtc.c
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_drv.c
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_drv.h
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_ovl.h
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_panel.c
> >>  create mode 100644 drivers/gpu/drm/atmel_hlcdc/atmel_hlcdc_panel.h
> >>
> >> --
> >> 1.9.1
> >>
> >>
> >> _______________________________________________
> >> linux-arm-kernel mailing list
> >> linux-arm-kernel@...ts.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> >
> 

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