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Date: Tue, 21 May 2024 11:31:43 +0200
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Subject: Re: [PATCH v4 09/10] drm/vs: Innosilicon HDMI support
To: keith <keith.zhao@starfivetech.com>, andrzej.hajda@intel.com,
 neil.armstrong@linaro.org, rfoss@kernel.org,
 Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se,
 jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com,
 mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch,
 robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
 hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com,
 xingyu.wu@starfivetech.com, p.zabel@pengutronix.de,
 jack.zhu@starfivetech.com, shengyang.chen@starfivetech.com
Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
References: <20240521105817.3301-1-keith.zhao@starfivetech.com>
 <20240521105817.3301-10-keith.zhao@starfivetech.com>
From: Krzysztof Kozlowski <krzk@kernel.org>
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In-Reply-To: <20240521105817.3301-10-keith.zhao@starfivetech.com>
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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