[PATCH v16 03/12] drm: imx: imx-hdmi: convert imx-hdmi to drm_bridge mode

Russell King - ARM Linux linux at arm.linux.org.uk
Wed Dec 3 15:40:00 PST 2014

On Thu, Dec 04, 2014 at 12:56:24AM +0800, Andy Yan wrote:
> Hi Russell:
> On 2014年12月04日 00:33, Russell King - ARM Linux wrote:
> >On Thu, Dec 04, 2014 at 12:30:23AM +0800, Andy Yan wrote:
> >>On 2014年12月04日 00:11, Russell King - ARM Linux wrote:
> >>>I meant that imx_hdmi_bind should be passed these, so that it needs to
> >>>know nothing about the struct device beyond the generic device structure.
> >>>In other words, the dw-hdmi core should not assume that the struct device
> >>>is part of a platform device.
> >>>
> >>    if so, how about the device tree properties  ddc-i2c-bus, reg-io-width,
> >>iahb, isfr,
> >>   they are all found by device?
> >If the device has a device tree node associated with it, it will have a
> >non-NULL dev->of_node - which is part of the generic device structure.
> >
>   so , I just need get the resource and irq number in the
> dw_hdmi-imx/rockchip ,than
>   pass them to imx_hdmi_bind, as the properties ddc-i2c-bus, reg-io-width,
> iahb,isfr, they
>   are still can be handled in imx_hdmi_bind ?

Basically, what I'm suggesting is just this change to imx_hdmi_bind():

 int imx_hdmi_bind(struct device *dev, struct device *master,
		  void *data, struct drm_encoder *encoder,
+		  const struct resource *iores, int irq,
		  const struct imx_hdmi_plat_data *plat_data)
-	struct platform_device *pdev = to_platform_device(dev);

-	irq = platform_get_irq(pdev, 0);
	if (irq < 0)
		return irq;
		return ret;

-	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	hdmi->regs = devm_ioremap_resource(dev, iores);
	if (IS_ERR(hdmi->regs))

and supplying those as arguments from the caller.

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