[U-Boot] [PATCH v5 3/3] sunxi: video: Add simplefb support

[Hans de Goede]

Hi,

On 11/20/2014 06:40 PM, Simon Glass wrote:
> Hi Hans,
> 
> On 19 November 2014 13:32, Hans de Goede <hdegoede at redhat.com> wrote:
>> From: Luc Verhaegen <libv at skynet.be>
>>
>> Add simplefb support, note this depends on the kernel having support for
>> the clocks property which has recently been added to the simplefb devicetree
>> binding.
>>
>> Signed-off-by: Luc Verhaegen <libv at skynet.be>
>> [hdegoede at redhat.com: Use pre-populated simplefb node under /chosen as
>>  disussed on the devicetree list]
>> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
>> ---
>>  arch/arm/include/asm/arch-sunxi/display.h |  4 +++
>>  board/sunxi/board.c                       | 11 ++++++++
>>  drivers/video/sunxi_display.c             | 42 +++++++++++++++++++++++++++++++
>>  include/configs/sunxi-common.h            |  8 ++++++
>>  4 files changed, 65 insertions(+)
>>
>> diff --git a/arch/arm/include/asm/arch-sunxi/display.h b/arch/arm/include/asm/arch-sunxi/display.h
>> index 8d80ceb..c9d81ba 100644
>> --- a/arch/arm/include/asm/arch-sunxi/display.h
>> +++ b/arch/arm/include/asm/arch-sunxi/display.h
>> @@ -195,4 +195,8 @@ struct sunxi_hdmi_reg {
>>  #define SUNXI_HDMI_PLL_DBG0_PLL3               (0 << 21)
>>  #define SUNXI_HDMI_PLL_DBG0_PLL7               (1 << 21)
>>
>> +#ifdef CONFIG_VIDEO_DT_SIMPLEFB
>> +int sunxi_simplefb_setup(void *blob);
>> +#endif
> 
> Do you really need this #ifdef?

No, I'm not the original author of this patch and I inherited this from the
original author, I'm not a big fan either, I'll drop it.

> 
>> +
>>  #endif /* _SUNXI_DISPLAY_H */
>> diff --git a/board/sunxi/board.c b/board/sunxi/board.c
>> index e6ec5b8..d4530e8 100644
>> --- a/board/sunxi/board.c
>> +++ b/board/sunxi/board.c
>> @@ -24,6 +24,7 @@
>>  #endif
>>  #include <asm/arch/clock.h>
>>  #include <asm/arch/cpu.h>
>> +#include <asm/arch/display.h>
>>  #include <asm/arch/dram.h>
>>  #include <asm/arch/gpio.h>
>>  #include <asm/arch/mmc.h>
>> @@ -237,3 +238,13 @@ int misc_init_r(void)
>>         return 0;
>>  }
>>  #endif
>> +
>> +#ifdef CONFIG_OF_BOARD_SETUP
>> +void
>> +ft_board_setup(void *blob, bd_t *bd)
> 
> void on same line?

Another inherited thing, will fixup (everywhere).

> Also can you make it return int. You could look at
> u-boot-fdt/next (I am waiting on resolving one patch before sending a
> pull).

Ack, will also fix.

> 
>> +{
>> +#ifdef CONFIG_VIDEO_DT_SIMPLEFB
>> +       sunxi_simplefb_setup(blob);
>> +#endif
>> +}
>> +#endif /* CONFIG_OF_BOARD_SETUP */
>> diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
>> index 3f46c31..2f3f5db 100644
>> --- a/drivers/video/sunxi_display.c
>> +++ b/drivers/video/sunxi_display.c
>> @@ -13,6 +13,8 @@
>>  #include <asm/arch/display.h>
>>  #include <asm/global_data.h>
>>  #include <asm/io.h>
>> +#include <fdtdec.h>
>> +#include <fdt_support.h>
>>  #include <linux/fb.h>
>>  #include <video_fb.h>
>>
>> @@ -416,3 +418,43 @@ video_hw_init(void)
>>
>>         return graphic_device;
>>  }
>> +
>> +/*
>> + * Simplefb support.
>> + */
>> +#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB)
>> +int
>> +sunxi_simplefb_setup(void *blob)
> 
> int on same line
> 
>> +{
>> +       static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
>> +       int offset, ret;
>> +
>> +       if (!sunxi_display.enabled)
>> +               return 0;
>> +
>> +       /* Find a framebuffer node, with pipeline == "de_be0-lcd0-hdmi" */
>> +       offset = fdt_node_offset_by_compatible(blob, -1,
>> +                                              "allwinner,simple-framebuffer");
>> +       while (offset >= 0) {
>> +               ret = fdt_find_string(blob, offset, "allwinner,pipeline",
>> +                                     "de_be0-lcd0-hdmi");
>> +               if (ret == 0)
>> +                       break;
>> +               offset = fdt_node_offset_by_compatible(blob, offset,
>> +                                              "allwinner,simple-framebuffer");
>> +       }
> 
> Can you use do...while() to avoid repeating the 'offset =' line?
> 
>> +       if (offset < 0) {
>> +               eprintf("Cannot setup simplefb: node not found\n");
>> +               return 0; /* Keep older kernels working */
>> +       }
>> +
>> +       ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base,
>> +                       graphic_device->winSizeX, graphic_device->winSizeY,
>> +                       graphic_device->winSizeX * graphic_device->gdfBytesPP,
>> +                       "x8r8g8b8");
>> +       if (ret)
>> +               eprintf("Cannot setup simplefb: Error setting properties\n");
>> +
>> +       return ret;
>> +}
>> +#endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */
>> diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
>> index 900ef52..d5d907b 100644
>> --- a/include/configs/sunxi-common.h
>> +++ b/include/configs/sunxi-common.h
>> @@ -204,6 +204,9 @@
>>   */
>>  #define CONFIG_SUNXI_FB_SIZE (8 << 20)
>>
>> +/* Do we want to initialize a simple FB? */
>> +#define CONFIG_VIDEO_DT_SIMPLEFB
>> +
>>  #define CONFIG_VIDEO_SUNXI
>>
>>  #define CONFIG_CFB_CONSOLE
>> @@ -217,6 +220,11 @@
>>
>>  #define CONFIG_SYS_MEM_TOP_HIDE ((CONFIG_SUNXI_FB_SIZE + 0xFFF) & ~0xFFF)
>>
>> +/* To be able to hook simplefb into dt */
>> +#ifdef CONFIG_VIDEO_DT_SIMPLEFB
>> +#define CONFIG_OF_BOARD_SETUP
>> +#endif
>> +
>>  #endif /* CONFIG_VIDEO */
>>
>>  /* Ethernet support */
>> --
>> 2.1.0
>>
> 
> Regards,
> Simon

Regards,

Hans