linux-kernel - Re: [PATCH 3/7] Add i.MX5 framebuffer driver

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Date:	Fri, 18 Feb 2011 10:52:21 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Jason Chen <weitway@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-fbdev@...r.kernel.org, Paul Mundt <lethal@...ux-sh.org>,
	Samuel Ortiz <sameo@...ux.intel.com>
Subject: Re: [PATCH 3/7] Add i.MX5 framebuffer driver

Hi Jason,

On Fri, Feb 18, 2011 at 05:22:09PM +0800, Jason Chen wrote:
> hi, Sasha,
> 
> > +       if (var->vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */
> > +               sig_cfg.odd_field_first = 1;
> > +       if (var->sync & FB_SYNC_EXT)
> > +               sig_cfg.ext_clk = 1;
> > +       if (var->sync & FB_SYNC_HOR_HIGH_ACT)
> > +               sig_cfg.Hsync_pol = 1;
> Please remove FB_SYNC_EXT support.

No problem, can do. But why? Is it nonfunctional in the hardware
or is it that the current code just misses more pieces to support
this?

> 
> +static void imx_ipu_fb_disable_overlay(struct fb_info *ovl)
> +{
> +       struct imx_ipu_fb_info *mxc_ovl = ovl->par;
> +
> +       if (!mxc_ovl->enabled)
> +               return;
> +
> +       ipu_dp_disable_fg(mxc_ovl->dp);
> +       ipu_wait_for_interrupt(451, 100);
> +       ipu_idmac_disable_channel(mxc_ovl->ipu_ch);
> +       ipu_dmfc_disable_channel(mxc_ovl->dmfc);
> +       mxc_ovl->enabled = 0;
> +}
> Had better has a definition of ipu irq 451.

Ok.

Sascha

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