diff mbox series

[v2,07/17] drm/mediatek: add disp config and mm 26mhz clock into mutex device

Message ID 1607746317-4696-8-git-send-email-yongqiang.niu@mediatek.com (mailing list archive)
State New, archived
Headers show
Series drm/mediatek: add support for mediatek SOC MT8192 | expand

Commit Message

Yongqiang Niu Dec. 12, 2020, 4:11 a.m. UTC 
there are 2 more clock need enable for display.
parser these clock when mutex device probe,
enable and disable when mutex on/off

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 49 ++++++++++++++++++++++++++++------
 1 file changed, 41 insertions(+), 8 deletions(-)

Comments

Nicolas Boichat Dec. 15, 2020, 1:37 p.m. UTC | #1 
On Sat, Dec 12, 2020 at 12:12 PM Yongqiang Niu
<yongqiang.niu@mediatek.com> wrote:
>
> there are 2 more clock need enable for display.
> parser these clock when mutex device probe,
> enable and disable when mutex on/off
>
> Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 49 ++++++++++++++++++++++++++++------
>  1 file changed, 41 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> index 60788c1..de618a1 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> @@ -118,7 +118,7 @@ struct mtk_ddp_data {
>
>  struct mtk_ddp {
>         struct device                   *dev;
> -       struct clk                      *clk;
> +       struct clk                      *clk[3];
>         void __iomem                    *regs;
>         struct mtk_disp_mutex           mutex[10];
>         const struct mtk_ddp_data       *data;
> @@ -257,14 +257,39 @@ int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex)
>  {
>         struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
>                                            mutex[mutex->id]);
> -       return clk_prepare_enable(ddp->clk);
> +       int ret;
> +       int i;
> +
> +       for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> +               if (IS_ERR(ddp->clk[i]))
> +                       continue;
> +               ret = clk_prepare_enable(ddp->clk[i]);
> +               if (ret) {
> +                       pr_err("failed to enable clock, err %d. i:%d\n",
> +                               ret, i);
> +                       goto err;
> +               }
> +       }
> +
> +       return 0;
> +
> +err:
> +       while (--i >= 0)
> +               clk_disable_unprepare(ddp->clk[i]);
> +       return ret;
>  }
>
>  void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex)
>  {
>         struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
>                                            mutex[mutex->id]);
> -       clk_disable_unprepare(ddp->clk);
> +       int i;
> +
> +        for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> +               if (IS_ERR(ddp->clk[i]))
> +                       continue;
> +               clk_disable_unprepare(ddp->clk[i]);
> +       }
>  }
>
>  void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
> @@ -415,11 +440,19 @@ static int mtk_ddp_probe(struct platform_device *pdev)
>         ddp->data = of_device_get_match_data(dev);
>
>         if (!ddp->data->no_clk) {
> -               ddp->clk = devm_clk_get(dev, NULL);
> -               if (IS_ERR(ddp->clk)) {
> -                       if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
> -                               dev_err(dev, "Failed to get clock\n");
> -                       return PTR_ERR(ddp->clk);
> +               int ret;
> +
> +               for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> +                       ddp->clk[i] = of_clk_get(dev->of_node, i);
> +
> +                       if (IS_ERR(ddp->clk[i])) {
> +                               ret = PTR_ERR(ddp->clk[i]);
> +                               if (ret != EPROBE_DEFER)
> +                                       dev_err(dev, "Failed to get clock %d\n",
> +                                               ret);
> +
> +                               return ret;
> +                       }

Use of_clk_bulk_get_all instead?

ddp->num_clks = of_clk_bulk_get_all(dev->of_node, &ddp->clks);
...

Then the calls above can be clk_bulk_enable/clk_bulk_disable using
num_clks and clks.


>                 }
>         }
>
> --
> 1.8.1.1.dirty
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
Yongqiang Niu Dec. 23, 2020, 1:23 a.m. UTC | #2 
On Tue, 2020-12-15 at 21:37 +0800, Nicolas Boichat wrote:
> On Sat, Dec 12, 2020 at 12:12 PM Yongqiang Niu
> <yongqiang.niu@mediatek.com> wrote:
> >
> > there are 2 more clock need enable for display.
> > parser these clock when mutex device probe,
> > enable and disable when mutex on/off
> >
> > Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
> > ---
> >  drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 49 ++++++++++++++++++++++++++++------
> >  1 file changed, 41 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > index 60788c1..de618a1 100644
> > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
> > @@ -118,7 +118,7 @@ struct mtk_ddp_data {
> >
> >  struct mtk_ddp {
> >         struct device                   *dev;
> > -       struct clk                      *clk;
> > +       struct clk                      *clk[3];
> >         void __iomem                    *regs;
> >         struct mtk_disp_mutex           mutex[10];
> >         const struct mtk_ddp_data       *data;
> > @@ -257,14 +257,39 @@ int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex)
> >  {
> >         struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
> >                                            mutex[mutex->id]);
> > -       return clk_prepare_enable(ddp->clk);
> > +       int ret;
> > +       int i;
> > +
> > +       for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> > +               if (IS_ERR(ddp->clk[i]))
> > +                       continue;
> > +               ret = clk_prepare_enable(ddp->clk[i]);
> > +               if (ret) {
> > +                       pr_err("failed to enable clock, err %d. i:%d\n",
> > +                               ret, i);
> > +                       goto err;
> > +               }
> > +       }
> > +
> > +       return 0;
> > +
> > +err:
> > +       while (--i >= 0)
> > +               clk_disable_unprepare(ddp->clk[i]);
> > +       return ret;
> >  }
> >
> >  void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex)
> >  {
> >         struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
> >                                            mutex[mutex->id]);
> > -       clk_disable_unprepare(ddp->clk);
> > +       int i;
> > +
> > +        for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> > +               if (IS_ERR(ddp->clk[i]))
> > +                       continue;
> > +               clk_disable_unprepare(ddp->clk[i]);
> > +       }
> >  }
> >
> >  void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
> > @@ -415,11 +440,19 @@ static int mtk_ddp_probe(struct platform_device *pdev)
> >         ddp->data = of_device_get_match_data(dev);
> >
> >         if (!ddp->data->no_clk) {
> > -               ddp->clk = devm_clk_get(dev, NULL);
> > -               if (IS_ERR(ddp->clk)) {
> > -                       if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
> > -                               dev_err(dev, "Failed to get clock\n");
> > -                       return PTR_ERR(ddp->clk);
> > +               int ret;
> > +
> > +               for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
> > +                       ddp->clk[i] = of_clk_get(dev->of_node, i);
> > +
> > +                       if (IS_ERR(ddp->clk[i])) {
> > +                               ret = PTR_ERR(ddp->clk[i]);
> > +                               if (ret != EPROBE_DEFER)
> > +                                       dev_err(dev, "Failed to get clock %d\n",
> > +                                               ret);
> > +
> > +                               return ret;
> > +                       }
> 
> Use of_clk_bulk_get_all instead?
> 
> ddp->num_clks = of_clk_bulk_get_all(dev->of_node, &ddp->clks);
> ...
> 
> Then the calls above can be clk_bulk_enable/clk_bulk_disable using
> num_clks and clks.
> 

will be fixed in next version
> 
> >                 }
> >         }
> >
> > --
> > 1.8.1.1.dirty
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
index 60788c1..de618a1 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c
@@ -118,7 +118,7 @@  struct mtk_ddp_data {
 
 struct mtk_ddp {
 	struct device			*dev;
-	struct clk			*clk;
+	struct clk			*clk[3];
 	void __iomem			*regs;
 	struct mtk_disp_mutex		mutex[10];
 	const struct mtk_ddp_data	*data;
@@ -257,14 +257,39 @@  int mtk_disp_mutex_prepare(struct mtk_disp_mutex *mutex)
 {
 	struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
 					   mutex[mutex->id]);
-	return clk_prepare_enable(ddp->clk);
+	int ret;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+		if (IS_ERR(ddp->clk[i]))
+			continue;
+		ret = clk_prepare_enable(ddp->clk[i]);
+		if (ret) {
+			pr_err("failed to enable clock, err %d. i:%d\n",
+				ret, i);
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	while (--i >= 0)
+		clk_disable_unprepare(ddp->clk[i]);
+	return ret;
 }
 
 void mtk_disp_mutex_unprepare(struct mtk_disp_mutex *mutex)
 {
 	struct mtk_ddp *ddp = container_of(mutex, struct mtk_ddp,
 					   mutex[mutex->id]);
-	clk_disable_unprepare(ddp->clk);
+	int i;
+
+	 for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+		if (IS_ERR(ddp->clk[i]))
+			continue;
+		clk_disable_unprepare(ddp->clk[i]);
+	}
 }
 
 void mtk_disp_mutex_add_comp(struct mtk_disp_mutex *mutex,
@@ -415,11 +440,19 @@  static int mtk_ddp_probe(struct platform_device *pdev)
 	ddp->data = of_device_get_match_data(dev);
 
 	if (!ddp->data->no_clk) {
-		ddp->clk = devm_clk_get(dev, NULL);
-		if (IS_ERR(ddp->clk)) {
-			if (PTR_ERR(ddp->clk) != -EPROBE_DEFER)
-				dev_err(dev, "Failed to get clock\n");
-			return PTR_ERR(ddp->clk);
+		int ret;
+
+		for (i = 0; i < ARRAY_SIZE(ddp->clk); i++) {
+			ddp->clk[i] = of_clk_get(dev->of_node, i);
+
+			if (IS_ERR(ddp->clk[i])) {
+				ret = PTR_ERR(ddp->clk[i]);
+				if (ret != EPROBE_DEFER)
+					dev_err(dev, "Failed to get clock %d\n",
+						ret);
+
+				return ret;
+			}
 		}
 	}