linux-kernel - Re: [PATCH 4/4] Revert "drm/exynos: add mout_hdmi clock in hdmi driver to change parent"

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Message-id: <53441B2B.1020001@samsung.com>
Date:	Tue, 08 Apr 2014 17:52:11 +0200
From:	Tomasz Figa <t.figa@...sung.com>
To:	Tomasz Stanislawski <t.stanislaws@...sung.com>,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org
Cc:	mturquette@...aro.org, kgene.kim@...sung.com, inki.dae@...sung.com,
	sw0312.kim@...sung.com, kyungmin.park@...sung.com,
	airlied@...ux.ie, rob.herring@...xeda.com,
	sylvester.nawrocki@...il.com, a.hajda@...sung.com, kishon@...com
Subject: Re: [PATCH 4/4] Revert
 "drm/exynos: add mout_hdmi clock in hdmi driver to change parent"

Hi Tomasz,

On 04.04.2014 16:53, Tomasz Stanislawski wrote:
> This reverts commit 59956d35a8618235ea715280b49447bb36f2c975.
>

Probably a reason why this commit is being reverted would be a good idea.

> Signed-off-by: Tomasz Stanislawski <t.stanislaws@...sung.com>
> ---
>   drivers/gpu/drm/exynos/exynos_hdmi.c |   14 ++++----------
>   1 file changed, 4 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
> index 9a6d652..8ebb4bf 100644
> --- a/drivers/gpu/drm/exynos/exynos_hdmi.c
> +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
> @@ -75,7 +75,6 @@ struct hdmi_resources {
>   	struct clk			*sclk_pixel;
>   	struct clk			*sclk_hdmiphy;
>   	struct clk			*hdmiphy;
> -	struct clk			*mout_hdmi;
>   	struct regulator_bulk_data	*regul_bulk;
>   	int				regul_count;
>   };
> @@ -1282,7 +1281,7 @@ static void hdmi_v13_mode_apply(struct hdmi_context *hdata)
>   	}
>
>   	clk_disable_unprepare(hdata->res.sclk_hdmi);
> -	clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_hdmiphy);
> +	clk_set_parent(hdata->res.sclk_hdmi, hdata->res.sclk_hdmiphy);
>   	clk_prepare_enable(hdata->res.sclk_hdmi);
>
>   	/* enable HDMI and timing generator */
> @@ -1449,7 +1448,7 @@ static void hdmi_v14_mode_apply(struct hdmi_context *hdata)
>   	}
>
>   	clk_disable_unprepare(hdata->res.sclk_hdmi);
> -	clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_hdmiphy);
> +	clk_set_parent(hdata->res.sclk_hdmi, hdata->res.sclk_hdmiphy);
>   	clk_prepare_enable(hdata->res.sclk_hdmi);
>
>   	/* enable HDMI and timing generator */
> @@ -1475,7 +1474,7 @@ static void hdmiphy_conf_reset(struct hdmi_context *hdata)
>   	u32 reg;
>
>   	clk_disable_unprepare(hdata->res.sclk_hdmi);
> -	clk_set_parent(hdata->res.mout_hdmi, hdata->res.sclk_pixel);
> +	clk_set_parent(hdata->res.sclk_hdmi, hdata->res.sclk_pixel);
>   	clk_prepare_enable(hdata->res.sclk_hdmi);
>
>   	/* operation mode */
> @@ -1982,13 +1981,8 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
>   		DRM_ERROR("failed to get clock 'hdmiphy'\n");
>   		goto fail;
>   	}
> -	res->mout_hdmi = devm_clk_get(dev, "mout_hdmi");
> -	if (IS_ERR(res->mout_hdmi)) {
> -		DRM_ERROR("failed to get clock 'mout_hdmi'\n");
> -		goto fail;
> -	}
>
> -	clk_set_parent(res->mout_hdmi, res->sclk_pixel);
> +	clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
>
>   	res->regul_bulk = devm_kzalloc(dev, ARRAY_SIZE(supply) *
>   		sizeof(res->regul_bulk[0]), GFP_KERNEL);
>

Otherwise looks fine and will apply after all its dependencies are 
agreed upon.

Best regards,
Tomasz
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