Re: [PATCH v4 09/10] drm/vs: Innosilicon HDMI support

[Krzysztof Kozlowski <krzk@kernel.org>]

On 21/05/2024 12:58, keith wrote:
> add inno hdmi driver which binds to vs display controller
> and this driver uses the commom api from the inno hdmi
> 
> Signed-off-by: keith <keith.zhao@starfivetech.com>
> ---

...

> +static int starfive_hdmi_bind(struct device *dev, struct device *master,
> +			      void *data)
> +{
> +	struct platform_device *pdev = to_platform_device(dev);
> +	struct drm_device *drm = dev_get_drvdata(master);
> +	struct stf_inno_hdmi *stf_hdmi;
> +	struct inno_hdmi *hdmi;
> +	struct resource *iores;
> +
> +	int ret;
> +	unsigned long long rate;
> +
> +	stf_hdmi = drmm_simple_encoder_alloc(drm, struct stf_inno_hdmi,
> +					     encoder, DRM_MODE_ENCODER_TMDS);
> +	hdmi = &stf_hdmi->inno_hdmi;
> +
> +	hdmi->dev = dev;
> +	hdmi->plat_data = (struct inno_hdmi_plat_data *)of_device_get_match_data(dev);
> +
> +	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	hdmi->regs = devm_ioremap_resource(dev, iores);

There's a helper combining these two.

> +	if (IS_ERR(hdmi->regs))
> +		return PTR_ERR(hdmi->regs);
> +
> +	ret = starfive_hdmi_get_clk_rst(dev, stf_hdmi);
> +	if (ret < 0)
> +		return ret;
> +
> +	ret = starfive_hdmi_enable_clk_rst(dev, stf_hdmi);
> +	if (ret)
> +		return ret;
> +
> +	rate = clk_get_rate(stf_hdmi->clk_hdmi[CLK_SYS].clk);
> +	inno_hdmi_i2c_init(hdmi, rate);
> +
> +	ret = inno_hdmi_bind(drm, hdmi, &stf_hdmi->encoder);
> +	if (ret)
> +		goto err_disable_clk;
> +
> +	dev_set_drvdata(dev, stf_hdmi);
> +
> +	return 0;
> +



Best regards,
Krzysztof