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Message-ID: <53610936.6020902@traphandler.com> Date: Wed, 30 Apr 2014 16:31:18 +0200 From: Jean-Jacques Hiblot <jjhiblot@...phandler.com> To: Tim Niemeyer <tim.niemeyer@...science.de>, Boris BREZILLON <boris.brezillon@...e-electrons.com> CC: 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 Tim, On 04/24/2014 02:46 PM, Tim Niemeyer wrote: > > 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. > I've been able to reproduce the problem. After some digging, I found that trigerring a hotplug event with drm_kms_helper_hotplug_event() to trigger a detection of the connectors at the end of atmel_hlcdc_load() solves the issue. I don't know if this is a proper way to fix it though. > 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 >>> >> > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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