linux-kernel - Re: [PATCH 2/3] drm/exynos: dp: Remove support for unused dptx-phy

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Date:	Wed, 08 Oct 2014 12:10:47 +0900
From:	Inki Dae <inki.dae@...sung.com>
To:	Vivek Gautam <gautam.vivek@...sung.com>
Cc:	dri-devel@...ts.freedesktop.org,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sean Paul <seanpaul@...gle.com>, kishon <kishon@...com>,
	ajaykumar.rs@...sung.com, Jingoo Han <jg1.han@...sung.com>,
	cpgs@...sung.com
Subject: Re: [PATCH 2/3] drm/exynos: dp: Remove support for unused dptx-phy

On 2014년 10월 08일 11:57, Vivek Gautam wrote:
> Hi,
> 
> 
> On Mon, Sep 15, 2014 at 6:43 PM, Vivek Gautam <gautam.vivek@...sung.com> wrote:
>> Now that we have moved to generic phy based bindings,
>> we don't need to have any code related to older dptx-phy.
>> Nobody is using this dptx-phy anymore, so removing the
>> same.
>>
>> Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
>> Cc: Jingoo Han <jg1.han@...sung.com>
>> ---
> 
> Is someone taking care of this patch ? We already have got the corresponsding
> dp-phy patch merged, so we should also get this patch in.
> 

Can anyone give me tested-by after test? I cannot test this module
because I have no any board equipped with dp panel.

Jingoo or other?

Thanks,
Inki Dae

>>  drivers/gpu/drm/exynos/exynos_dp_core.c |   58 +++++++------------------------
>>  drivers/gpu/drm/exynos/exynos_dp_core.h |    2 --
>>  2 files changed, 13 insertions(+), 47 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> index 4f3c7eb..5ffc1b2 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
>> @@ -1050,28 +1050,14 @@ static int exynos_dp_create_connector(struct exynos_drm_display *display,
>>
>>  static void exynos_dp_phy_init(struct exynos_dp_device *dp)
>>  {
>> -       if (dp->phy) {
>> +       if (dp->phy)
>>                 phy_power_on(dp->phy);
>> -       } else if (dp->phy_addr) {
>> -               u32 reg;
>> -
>> -               reg = __raw_readl(dp->phy_addr);
>> -               reg |= dp->enable_mask;
>> -               __raw_writel(reg, dp->phy_addr);
>> -       }
>>  }
>>
>>  static void exynos_dp_phy_exit(struct exynos_dp_device *dp)
>>  {
>> -       if (dp->phy) {
>> +       if (dp->phy)
>>                 phy_power_off(dp->phy);
>> -       } else if (dp->phy_addr) {
>> -               u32 reg;
>> -
>> -               reg = __raw_readl(dp->phy_addr);
>> -               reg &= ~(dp->enable_mask);
>> -               __raw_writel(reg, dp->phy_addr);
>> -       }
>>  }
>>
>>  static void exynos_dp_poweron(struct exynos_drm_display *display)
>> @@ -1210,39 +1196,21 @@ static struct video_info *exynos_dp_dt_parse_pdata(struct device *dev)
>>
>>  static int exynos_dp_dt_parse_phydata(struct exynos_dp_device *dp)
>>  {
>> -       struct device_node *dp_phy_node = of_node_get(dp->dev->of_node);
>> -       u32 phy_base;
>>         int ret = 0;
>>
>> -       dp_phy_node = of_find_node_by_name(dp_phy_node, "dptx-phy");
>> -       if (!dp_phy_node) {
>> -               dp->phy = devm_phy_get(dp->dev, "dp");
>> -               return PTR_ERR_OR_ZERO(dp->phy);
>> -       }
>> -
>> -       if (of_property_read_u32(dp_phy_node, "reg", &phy_base)) {
>> -               dev_err(dp->dev, "failed to get reg for dptx-phy\n");
>> -               ret = -EINVAL;
>> -               goto err;
>> -       }
>> -
>> -       if (of_property_read_u32(dp_phy_node, "samsung,enable-mask",
>> -                               &dp->enable_mask)) {
>> -               dev_err(dp->dev, "failed to get enable-mask for dptx-phy\n");
>> -               ret = -EINVAL;
>> -               goto err;
>> -       }
>> -
>> -       dp->phy_addr = ioremap(phy_base, SZ_4);
>> -       if (!dp->phy_addr) {
>> -               dev_err(dp->dev, "failed to ioremap dp-phy\n");
>> -               ret = -ENOMEM;
>> -               goto err;
>> +       dp->phy = devm_phy_get(dp->dev, "dp");
>> +       if (IS_ERR(dp->phy)) {
>> +               ret = PTR_ERR(dp->phy);
>> +               if (ret == -ENOSYS || ret == -ENODEV) {
>> +                       dp->phy = NULL;
>> +               } else if (ret == -EPROBE_DEFER) {
>> +                       return ret;
>> +               } else {
>> +                       dev_err(dp->dev, "no DP phy configured\n");
>> +                       return ret;
>> +               }
>>         }
>>
>> -err:
>> -       of_node_put(dp_phy_node);
>> -
>>         return ret;
>>  }
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.h b/drivers/gpu/drm/exynos/exynos_dp_core.h
>> index a1aee69..6426201 100644
>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.h
>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.h
>> @@ -153,8 +153,6 @@ struct exynos_dp_device {
>>         struct clk              *clock;
>>         unsigned int            irq;
>>         void __iomem            *reg_base;
>> -       void __iomem            *phy_addr;
>> -       unsigned int            enable_mask;
>>
>>         struct video_info       *video_info;
>>         struct link_train       link_train;
>> --
>> 1.7.10.4
>>
> 
> 
> 

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