On Thu, Dec 04, 2014 at 12:04:37AM +0800, Andy Yan wrote:
> Hi Russell:
>
> On 2014年12月03日 23:38, Russell King - ARM Linux wrote:
> >On Wed, Dec 03, 2014 at 11:29:26PM +0800, Andy Yan wrote:
> >>+int imx_hdmi_bind(struct device *dev, struct device *master,
> >>+ void *data, struct drm_encoder *encoder,
> >>+ const struct imx_hdmi_plat_data *plat_data)
> >> {
> >> struct platform_device *pdev = to_platform_device(dev);
> >>- const struct of_device_id *of_id =
> >>- of_match_device(imx_hdmi_dt_ids, dev);
> >> struct drm_device *drm = data;
> >> struct device_node *np = dev->of_node;
> >> struct device_node *ddc_node;
> >>@@ -1594,19 +1566,16 @@ static int imx_hdmi_bind(struct device *dev, struct device *master, void *data)
> >> struct resource *iores;
> >> int ret, irq;
> >>- hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
> >>+ hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
> >> if (!hdmi)
> >> return -ENOMEM;
> >>- hdmi->dev = dev;
> >>+ hdmi->plat_data = plat_data;
> >>+ hdmi->dev = &pdev->dev;
> >>+ hdmi->dev_type = plat_data->dev_type;
> >> hdmi->sample_rate = 48000;
> >> hdmi->ratio = 100;
> >>-
> >>- if (of_id) {
> >>- const struct platform_device_id *device_id = of_id->data;
> >>-
> >>- hdmi->dev_type = device_id->driver_data;
> >>- }
> >>+ hdmi->encoder = encoder;
> >I'd suggest changing imx_hdmi_bind() to take the struct resource and irq
> >number, and avoiding the platform device stuff altogether in here.
> >
> Actually this is what the current code do: the resource and irq number
> are all handled in imx_hdmi_bind
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.
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