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

[Boris BREZILLON <boris.brezillon@free-electrons.com>]

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 ?

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
>>
>>
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>

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com