linux-kernel - Re: [PATCH v3 1/4] drm/mediatek: Move tz_disabled from mtk_hdmi_phy to mtk

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Message-ID: <1585707361.28859.19.camel@mhfsdcap03>
Date:   Wed, 1 Apr 2020 10:16:01 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
CC:     Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        <linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-mediatek@...ts.infradead.org>, "CK Hu" <ck.hu@...iatek.com>
Subject: Re: [PATCH v3 1/4] drm/mediatek: Move tz_disabled from mtk_hdmi_phy
 to mtk_hdmi driver

On Tue, 2020-03-31 at 23:57 +0800, Chun-Kuang Hu wrote:
> From: CK Hu <ck.hu@...iatek.com>
> 
> tz_disabled is used to control mtk_hdmi output signal, but this variable
> is stored in mtk_hdmi_phy and mtk_hdmi_phy does not use it. So move
> tz_disabled to mtk_hdmi where it's used.
> 
> Signed-off-by: CK Hu <ck.hu@...iatek.com>
> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_hdmi.c           | 22 ++++++++++++++++---
>  drivers/gpu/drm/mediatek/mtk_hdmi_phy.h       |  1 -
>  .../gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c    |  1 -
>  3 files changed, 19 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> index 5e4a4dbda443..878433c09c9b 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c
> @@ -144,11 +144,16 @@ struct hdmi_audio_param {
>  	struct hdmi_codec_params codec_params;
>  };
>  
> +struct mtk_hdmi_conf {
> +	bool tz_disabled;
> +};
> +
>  struct mtk_hdmi {
>  	struct drm_bridge bridge;
>  	struct drm_bridge *next_bridge;
>  	struct drm_connector conn;
>  	struct device *dev;
> +	const struct mtk_hdmi_conf *conf;
>  	struct phy *phy;
>  	struct device *cec_dev;
>  	struct i2c_adapter *ddc_adpt;
> @@ -230,7 +235,6 @@ static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
>  static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
>  {
>  	struct arm_smccc_res res;
> -	struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy);
>  
>  	/*
>  	 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
> @@ -238,7 +242,7 @@ static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
>  	 * The ARM trusted firmware provides an API for the HDMI driver to set
>  	 * this control bit to enable HDMI output in supervisor mode.
>  	 */
> -	if (hdmi_phy->conf && hdmi_phy->conf->tz_disabled)
> +	if (hdmi->conf->tz_disabled)
>  		regmap_update_bits(hdmi->sys_regmap,
>  				   hdmi->sys_offset + HDMI_SYS_CFG20,
>  				   0x80008005, enable ? 0x80000005 : 0x8000);
> @@ -1688,6 +1692,7 @@ static int mtk_drm_hdmi_probe(struct platform_device *pdev)
>  		return -ENOMEM;
>  
>  	hdmi->dev = dev;
> +	hdmi->conf = of_device_get_match_data(dev);
>  
>  	ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
>  	if (ret)
> @@ -1765,8 +1770,19 @@ static int mtk_hdmi_resume(struct device *dev)
>  static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
>  			 mtk_hdmi_suspend, mtk_hdmi_resume);
>  
> +static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
> +	.tz_disabled = true,
> +};
> +
> +static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8173;
> +
>  static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
> -	{ .compatible = "mediatek,mt8173-hdmi", },
> +	{ .compatible = "mediatek,mt2701-hdmi",
> +	  .data = &mtk_hdmi_conf_mt2701,
> +	},
> +	{ .compatible = "mediatek,mt8173-hdmi",
> +	  .data = &mtk_hdmi_conf_mt8173,
> +	},
>  	{}
>  };
>  
> diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
> index 2d8b3182470d..fc1c2efd1128 100644
> --- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
> +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
> @@ -20,7 +20,6 @@
>  struct mtk_hdmi_phy;
>  
>  struct mtk_hdmi_phy_conf {
> -	bool tz_disabled;
>  	unsigned long flags;
>  	const struct clk_ops *hdmi_phy_clk_ops;
>  	void (*hdmi_phy_enable_tmds)(struct mtk_hdmi_phy *hdmi_phy);
> diff --git a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
> index d3cc4022e988..99fe05cd3598 100644
> --- a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
> +++ b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
> @@ -237,7 +237,6 @@ static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
>  }
>  
>  struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = {
> -	.tz_disabled = true,
>  	.flags = CLK_SET_RATE_GATE,
>  	.hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
>  	.hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds,

Reviewed-by: Chunfeng Yun <chunfeng.yun@...iatek.com>