[PATCH] drm/panel: s6e8aa0: Update calls to gpiod_get*()

[PATCH] drm/panel: s6e8aa0: Update calls to gpiod_get*()

[Alexandre Courbot]

Add the new flags argument to calls of (devm_)gpiod_get*() and
remove any direction setting code afterwards.

Currently both forms (with or without the flags argument)
are valid thanks to transitional macros in
<linux/gpio/consumer.h>. These macros will be removed once
all consumers are updated and the flags argument will become
compulsary.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 drivers/gpu/drm/panel/panel-s6e8aa0.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-s6e8aa0.c b/drivers/gpu/drm/panel/panel-s6e8aa0.c
index b5217fe37f02..6427aa187735 100644
--- a/drivers/gpu/drm/panel/panel-s6e8aa0.c
+++ b/drivers/gpu/drm/panel/panel-s6e8aa0.c
@@ -1019,17 +1019,12 @@ static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
 		return ret;
 	}
 
-	ctx->reset_gpio = devm_gpiod_get(dev, "reset");
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
 	if (IS_ERR(ctx->reset_gpio)) {
 		dev_err(dev, "cannot get reset-gpios %ld\n",
 			PTR_ERR(ctx->reset_gpio));
 		return PTR_ERR(ctx->reset_gpio);
 	}
-	ret = gpiod_direction_output(ctx->reset_gpio, 1);
-	if (ret < 0) {
-		dev_err(dev, "cannot configure reset-gpios %d\n", ret);
-		return ret;
-	}
 
 	ctx->brightness = GAMMA_LEVEL_NUM - 1;
 
-- 
2.1.2

[PATCH] drm/panel: simple: Update calls to gpiod_get*()

[Alexandre Courbot]

Add the new flags argument to calls of (devm_)gpiod_get*() and
remove any direction setting code afterwards.

Currently both forms (with or without the flags argument)
are valid thanks to transitional macros in
<linux/gpio/consumer.h>. These macros will be removed once
all consumers are updated and the flags argument will become
compulsary.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
 drivers/gpu/drm/panel/panel-simple.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 23de22f8c820..83d93062930d 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -247,21 +247,14 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
 	if (IS_ERR(panel->supply))
 		return PTR_ERR(panel->supply);
 
-	panel->enable_gpio = devm_gpiod_get_optional(dev, "enable");
+	panel->enable_gpio = devm_gpiod_get_optional(dev, "enable",
+						     GPIOD_OUT_LOW);
 	if (IS_ERR(panel->enable_gpio)) {
 		err = PTR_ERR(panel->enable_gpio);
 		dev_err(dev, "failed to request GPIO: %d\n", err);
 		return err;
 	}
 
-	if (panel->enable_gpio) {
-		err = gpiod_direction_output(panel->enable_gpio, 0);
-		if (err < 0) {
-			dev_err(dev, "failed to setup GPIO: %d\n", err);
-			return err;
-		}
-	}
-
 	backlight = of_parse_phandle(dev->of_node, "backlight", 0);
 	if (backlight) {
 		panel->backlight = of_find_backlight_by_node(backlight);
-- 
2.1.2

Re: [PATCH] drm/panel: s6e8aa0: Update calls to gpiod_get*()

[Andrzej Hajda]

On 10/23/2014 10:16 AM, Alexandre Courbot wrote:
> Add the new flags argument to calls of (devm_)gpiod_get*() and
> remove any direction setting code afterwards.
> 
> Currently both forms (with or without the flags argument)
> are valid thanks to transitional macros in
> <linux/gpio/consumer.h>. These macros will be removed once
> all consumers are updated and the flags argument will become
> compulsary.
> 
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

It needs patch "gpio: Fix gpio direction flags not getting set" to work
correctly. It is not yet present in drm-next. Beside this:

Acked-by: Andrzej Hajda <a.hajda@samsung.com>

--
Regards
Andrzej


> ---
>  drivers/gpu/drm/panel/panel-s6e8aa0.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-s6e8aa0.c b/drivers/gpu/drm/panel/panel-s6e8aa0.c
> index b5217fe37f02..6427aa187735 100644
> --- a/drivers/gpu/drm/panel/panel-s6e8aa0.c
> +++ b/drivers/gpu/drm/panel/panel-s6e8aa0.c
> @@ -1019,17 +1019,12 @@ static int s6e8aa0_probe(struct mipi_dsi_device *dsi)
>  		return ret;
>  	}
>  
> -	ctx->reset_gpio = devm_gpiod_get(dev, "reset");
> +	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
>  	if (IS_ERR(ctx->reset_gpio)) {
>  		dev_err(dev, "cannot get reset-gpios %ld\n",
>  			PTR_ERR(ctx->reset_gpio));
>  		return PTR_ERR(ctx->reset_gpio);
>  	}
> -	ret = gpiod_direction_output(ctx->reset_gpio, 1);
> -	if (ret < 0) {
> -		dev_err(dev, "cannot configure reset-gpios %d\n", ret);
> -		return ret;
> -	}
>  
>  	ctx->brightness = GAMMA_LEVEL_NUM - 1;
>  
> 

Re: [PATCH] drm/panel: s6e8aa0: Update calls to gpiod_get*()

[Alexandre Courbot]

On Thu, Oct 23, 2014 at 6:46 PM, Andrzej Hajda <a.hajda@samsung.com> wrote:
> On 10/23/2014 10:16 AM, Alexandre Courbot wrote:
>> Add the new flags argument to calls of (devm_)gpiod_get*() and
>> remove any direction setting code afterwards.
>>
>> Currently both forms (with or without the flags argument)
>> are valid thanks to transitional macros in
>> <linux/gpio/consumer.h>. These macros will be removed once
>> all consumers are updated and the flags argument will become
>> compulsary.
>>
>> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
>
> It needs patch "gpio: Fix gpio direction flags not getting set" to work
> correctly. It is not yet present in drm-next. Beside this:
>
> Acked-by: Andrzej Hajda <a.hajda@samsung.com>

The required patch is now merged, can we go on with this patch?

Re: [PATCH] drm/panel: simple: Update calls to gpiod_get*()

[Alexandre Courbot]

On Thu, Oct 23, 2014 at 5:16 PM, Alexandre Courbot <acourbot@nvidia.com> wrote:
> Add the new flags argument to calls of (devm_)gpiod_get*() and
> remove any direction setting code afterwards.
>
> Currently both forms (with or without the flags argument)
> are valid thanks to transitional macros in
> <linux/gpio/consumer.h>. These macros will be removed once
> all consumers are updated and the flags argument will become
> compulsary.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

Thierry, are you ok with this patch?

Re: [PATCH] drm/panel: s6e8aa0: Update calls to gpiod_get*()

[Thierry Reding]

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On Thu, Oct 23, 2014 at 05:16:57PM +0900, Alexandre Courbot wrote:
> Add the new flags argument to calls of (devm_)gpiod_get*() and
> remove any direction setting code afterwards.
> 
> Currently both forms (with or without the flags argument)
> are valid thanks to transitional macros in
> <linux/gpio/consumer.h>. These macros will be removed once
> all consumers are updated and the flags argument will become
> compulsary.
> 
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
>  drivers/gpu/drm/panel/panel-s6e8aa0.c | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)

Applied, thanks.

Thierry

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Re: [PATCH] drm/panel: simple: Update calls to gpiod_get*()

[Thierry Reding]

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On Thu, Oct 23, 2014 at 05:16:58PM +0900, Alexandre Courbot wrote:
> Add the new flags argument to calls of (devm_)gpiod_get*() and
> remove any direction setting code afterwards.
> 
> Currently both forms (with or without the flags argument)
> are valid thanks to transitional macros in
> <linux/gpio/consumer.h>. These macros will be removed once
> all consumers are updated and the flags argument will become
> compulsary.
> 
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
>  drivers/gpu/drm/panel/panel-simple.c | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)

Applied, thanks.

Thierry

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