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[PATCH v5 02/10] drm: Introduce drm_bridge_mode_valid()

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  [PATCH v5 02/10] drm: Introduce drm_bridge_mode_valid() Jose Abreu <Jose.Abreu@synopsys.com> - 2017-05-25 16:30 +0200
    Re: [PATCH v5 02/10] drm: Introduce drm_bridge_mode_valid() Archit Taneja <architt@codeaurora.org> - 2017-05-26 06:30 +0200
    Re: [PATCH v5 02/10] drm: Introduce drm_bridge_mode_valid() Neil Armstrong <narmstrong@baylibre.com> - 2017-05-30 09:30 +0200

#1650545 — [PATCH v5 02/10] drm: Introduce drm_bridge_mode_valid()

Introduce a new helper function which calls mode_valid() callback
for all bridges in an encoder chain.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Carlos Palminha <palminha@synopsys.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/gpu/drm/drm_bridge.c | 33 +++++++++++++++++++++++++++++++++
 include/drm/drm_bridge.h     |  2 ++
 2 files changed, 35 insertions(+)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 86a7637..dc8cdfe 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -206,6 +206,39 @@ bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
 EXPORT_SYMBOL(drm_bridge_mode_fixup);
 
 /**
+ * drm_bridge_mode_valid - validate the mode against all bridges in the
+ * 			   encoder chain.
+ * @bridge: bridge control structure
+ * @mode: desired mode to be validated
+ *
+ * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
+ * chain, starting from the first bridge to the last. If at least one bridge
+ * does not accept the mode the function returns the error code.
+ *
+ * Note: the bridge passed should be the one closest to the encoder.
+ *
+ * RETURNS:
+ * MODE_OK on success, drm_mode_status Enum error code on failure
+ */
+enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
+					   const struct drm_display_mode *mode)
+{
+	enum drm_mode_status ret = MODE_OK;
+
+	if (!bridge)
+		return ret;
+
+	if (bridge->funcs->mode_valid)
+		ret = bridge->funcs->mode_valid(bridge, mode);
+
+	if (ret != MODE_OK)
+		return ret;
+
+	return drm_bridge_mode_valid(bridge->next, mode);
+}
+EXPORT_SYMBOL(drm_bridge_mode_valid);
+
+/**
  * drm_bridge_disable - disables all bridges in the encoder chain
  * @bridge: bridge control structure
  *
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 00c6c36..8358eb3 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -233,6 +233,8 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
 			const struct drm_display_mode *mode,
 			struct drm_display_mode *adjusted_mode);
+enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
+					   const struct drm_display_mode *mode);
 void drm_bridge_disable(struct drm_bridge *bridge);
 void drm_bridge_post_disable(struct drm_bridge *bridge);
 void drm_bridge_mode_set(struct drm_bridge *bridge,
-- 
1.9.1

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#1651072

On 05/25/2017 07:49 PM, Jose Abreu wrote:
> Introduce a new helper function which calls mode_valid() callback
> for all bridges in an encoder chain.
>

Reviewed-by: Archit Taneja <architt@codeaurora.org>

> Signed-off-by: Jose Abreu <joabreu@synopsys.com>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Carlos Palminha <palminha@synopsys.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Dave Airlie <airlied@linux.ie>
> Cc: Andrzej Hajda <a.hajda@samsung.com>
> Cc: Archit Taneja <architt@codeaurora.org>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
>  drivers/gpu/drm/drm_bridge.c | 33 +++++++++++++++++++++++++++++++++
>  include/drm/drm_bridge.h     |  2 ++
>  2 files changed, 35 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
> index 86a7637..dc8cdfe 100644
> --- a/drivers/gpu/drm/drm_bridge.c
> +++ b/drivers/gpu/drm/drm_bridge.c
> @@ -206,6 +206,39 @@ bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
>  EXPORT_SYMBOL(drm_bridge_mode_fixup);
>
>  /**
> + * drm_bridge_mode_valid - validate the mode against all bridges in the
> + * 			   encoder chain.
> + * @bridge: bridge control structure
> + * @mode: desired mode to be validated
> + *
> + * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
> + * chain, starting from the first bridge to the last. If at least one bridge
> + * does not accept the mode the function returns the error code.
> + *
> + * Note: the bridge passed should be the one closest to the encoder.
> + *
> + * RETURNS:
> + * MODE_OK on success, drm_mode_status Enum error code on failure
> + */
> +enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
> +					   const struct drm_display_mode *mode)
> +{
> +	enum drm_mode_status ret = MODE_OK;
> +
> +	if (!bridge)
> +		return ret;
> +
> +	if (bridge->funcs->mode_valid)
> +		ret = bridge->funcs->mode_valid(bridge, mode);
> +
> +	if (ret != MODE_OK)
> +		return ret;
> +
> +	return drm_bridge_mode_valid(bridge->next, mode);
> +}
> +EXPORT_SYMBOL(drm_bridge_mode_valid);
> +
> +/**
>   * drm_bridge_disable - disables all bridges in the encoder chain
>   * @bridge: bridge control structure
>   *
> diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
> index 00c6c36..8358eb3 100644
> --- a/include/drm/drm_bridge.h
> +++ b/include/drm/drm_bridge.h
> @@ -233,6 +233,8 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
>  bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
>  			const struct drm_display_mode *mode,
>  			struct drm_display_mode *adjusted_mode);
> +enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
> +					   const struct drm_display_mode *mode);
>  void drm_bridge_disable(struct drm_bridge *bridge);
>  void drm_bridge_post_disable(struct drm_bridge *bridge);
>  void drm_bridge_mode_set(struct drm_bridge *bridge,
>

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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#1652893

On 05/25/2017 04:19 PM, Jose Abreu wrote:
> Introduce a new helper function which calls mode_valid() callback
> for all bridges in an encoder chain.
> 
> Signed-off-by: Jose Abreu <joabreu@synopsys.com>
> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Carlos Palminha <palminha@synopsys.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Dave Airlie <airlied@linux.ie>
> Cc: Andrzej Hajda <a.hajda@samsung.com>
> Cc: Archit Taneja <architt@codeaurora.org>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
>  drivers/gpu/drm/drm_bridge.c | 33 +++++++++++++++++++++++++++++++++
>  include/drm/drm_bridge.h     |  2 ++
>  2 files changed, 35 insertions(+)
> 
> diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
> index 86a7637..dc8cdfe 100644
> --- a/drivers/gpu/drm/drm_bridge.c
> +++ b/drivers/gpu/drm/drm_bridge.c
> @@ -206,6 +206,39 @@ bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
>  EXPORT_SYMBOL(drm_bridge_mode_fixup);
>  
>  /**
> + * drm_bridge_mode_valid - validate the mode against all bridges in the
> + * 			   encoder chain.
> + * @bridge: bridge control structure
> + * @mode: desired mode to be validated
> + *
> + * Calls &drm_bridge_funcs.mode_valid for all the bridges in the encoder
> + * chain, starting from the first bridge to the last. If at least one bridge
> + * does not accept the mode the function returns the error code.
> + *
> + * Note: the bridge passed should be the one closest to the encoder.
> + *
> + * RETURNS:
> + * MODE_OK on success, drm_mode_status Enum error code on failure
> + */
> +enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
> +					   const struct drm_display_mode *mode)
> +{
> +	enum drm_mode_status ret = MODE_OK;
> +
> +	if (!bridge)
> +		return ret;
> +
> +	if (bridge->funcs->mode_valid)
> +		ret = bridge->funcs->mode_valid(bridge, mode);
> +
> +	if (ret != MODE_OK)
> +		return ret;
> +
> +	return drm_bridge_mode_valid(bridge->next, mode);
> +}
> +EXPORT_SYMBOL(drm_bridge_mode_valid);
> +
> +/**
>   * drm_bridge_disable - disables all bridges in the encoder chain
>   * @bridge: bridge control structure
>   *
> diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
> index 00c6c36..8358eb3 100644
> --- a/include/drm/drm_bridge.h
> +++ b/include/drm/drm_bridge.h
> @@ -233,6 +233,8 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
>  bool drm_bridge_mode_fixup(struct drm_bridge *bridge,
>  			const struct drm_display_mode *mode,
>  			struct drm_display_mode *adjusted_mode);
> +enum drm_mode_status drm_bridge_mode_valid(struct drm_bridge *bridge,
> +					   const struct drm_display_mode *mode);
>  void drm_bridge_disable(struct drm_bridge *bridge);
>  void drm_bridge_post_disable(struct drm_bridge *bridge);
>  void drm_bridge_mode_set(struct drm_bridge *bridge,
> 

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>

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