On 12/04/14 09:53, Alexander Shiyan wrote:
> This adds support for the framebuffer available in the Cirrus
> Logic CLPS711X CPUs.
> FB features:
> - 1-2-4 bits per pixel.
> - Programmable panel size to a maximum of 1024x256 at 4 bps.
> - Relocatible Frame Buffer (SRAM or SDRAM).
> - Programmable refresh rates.
> - 16 gray scale values.
> This new driver supports usage with devicetree and as a general
> change it removes last user of <mach/hardware.h> for CLPS711X targets,
> so this subarch will fully prepared to switch to multiplatform.
> The driver have been tested with custom board equipped Cirrus Logic
> EP7312 in DT and non-DT mode.
>
> Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
> ---
> drivers/video/fbdev/clps711x-fb.c | 456 ++++++++++++++++++++++++++++++++++++++
> 1 file changed, 456 insertions(+)
> create mode 100644 drivers/video/fbdev/clps711x-fb.c
<snip>
> +
> +static int clps711x_fb_get_mode_dt(struct platform_device *pdev)
> +{
> + struct device_node *disp, *np = pdev->dev.of_node;
> + struct fb_info *info = platform_get_drvdata(pdev);
> + struct clps711x_fb_info *cfb = info->par;
> + int ret;
> +
> + cfb->syscon =
> + syscon_regmap_lookup_by_compatible("cirrus,clps711x-syscon1");
> + if (IS_ERR(cfb->syscon))
> + return PTR_ERR(cfb->syscon);
Hmm, what's the syscon stuff about? Looks like it's required, but the DT
documentation patch doesn't mention it at all.
Tomi
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