[U-Boot] [PATCH 2/3] sunxi: video: Add support for Hitachi tx18d42vm LCD panels

[Hans de Goede <hdegoede@redhat.com>]

Hi,

On 08-01-15 09:32, Ian Campbell wrote:
> On Sun, 2015-01-04 at 21:05 +0100, Hans de Goede wrote:
>> Hitachi tx18d42vm LCD panels have an onboard controller which needs some
>> initialization via spi for the panel to become functional as a regular LVDS
>> panel.
>>
>> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>> ---
>>   board/sunxi/Kconfig             |  3 ++
>>   drivers/video/Makefile          |  2 +-
>>   drivers/video/sunxi_display.c   |  9 ++++++
>>   drivers/video/sunxi_lcd_panel.c | 68 +++++++++++++++++++++++++++++++++++++++++
>>   drivers/video/sunxi_lcd_panel.h |  9 ++++++
>>   5 files changed, 90 insertions(+), 1 deletion(-)
>>   create mode 100644 drivers/video/sunxi_lcd_panel.c
>>   create mode 100644 drivers/video/sunxi_lcd_panel.h
>>
>> diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
>> index fdb18a4..e9f62b9 100644
>> --- a/board/sunxi/Kconfig
>> +++ b/board/sunxi/Kconfig
>> @@ -357,6 +357,9 @@ config VIDEO_LCD_PANEL_PARALLEL
>>   config VIDEO_LCD_PANEL_LVDS
>>   	bool "Generic lvds interface LCD panel"
>>
>> +config VIDEO_LCD_PANEL_HITACHI_TX18D42VM
>> +	bool "Hitachi tx18d42vm LCD panel"
>> +
>>   endchoice
>>
>>   config USB_KEYBOARD
>> diff --git a/drivers/video/Makefile b/drivers/video/Makefile
>> index 42b1eaa..d4fe1aa 100644
>> --- a/drivers/video/Makefile
>> +++ b/drivers/video/Makefile
>> @@ -39,7 +39,7 @@ obj-$(CONFIG_VIDEO_SANDBOX_SDL) += sandbox_sdl.o
>>   obj-$(CONFIG_VIDEO_SED13806) += sed13806.o
>>   obj-$(CONFIG_VIDEO_SM501) += sm501.o
>>   obj-$(CONFIG_VIDEO_SMI_LYNXEM) += smiLynxEM.o videomodes.o
>> -obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o videomodes.o
>> +obj-$(CONFIG_VIDEO_SUNXI) += sunxi_display.o sunxi_lcd_panel.o videomodes.o
>>   obj-$(CONFIG_VIDEO_TEGRA) += tegra.o
>>   obj-$(CONFIG_VIDEO_VCXK) += bus_vcxk.o
>>   obj-$(CONFIG_VIDEO_X86) += x86_fb.o
>> diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
>> index 4b63b01..f087c2c 100644
>> --- a/drivers/video/sunxi_display.c
>> +++ b/drivers/video/sunxi_display.c
>> @@ -19,8 +19,13 @@
>>   #include <fdtdec.h>
>>   #include <fdt_support.h>
>>   #include <video_fb.h>
>> +#include "sunxi_lcd_panel.h"
>>   #include "videomodes.h"
>>
>> +#ifdef CONFIG_VIDEO_LCD_PANEL_HITACHI_TX18D42VM
>> +#define CONFIG_VIDEO_LCD_PANEL_LVDS
>> +#endif
>
> Your reply to 1/3 made me notice this, which I somehow missed before, I
> don't think this is the right way to go about this.
>
> It seems to me that LCD_PANEL_HITACHI does not belong under the PARALLEL
> vs LVDS Kconfig choice, rather it should be an independent bool option
> which depends on PANEL_LVDS.

Technically you are correct, but from a user pov it seems easier to tell
the user to select which panel he has, and then the user can chose between a
bunch of generic ones (generic parallel, generic lvds) and a bunch of specific
panels which need some extra setup.

If you insist I can live with doing things your way though, either way let
me know how you want to handle this.

Regards,

Hans