[v6,11/12] soc: mediatek: cmdq: add cmdq_dev_get_event function
diff mbox series

Message ID 20190516090224.59070-12-bibby.hsieh@mediatek.com
State New
Headers show
Series
  • support gce on mt8183 platform
Related show

Commit Message

Bibby Hsieh May 16, 2019, 9:02 a.m. UTC
When client ask gce to clear or wait for event,
client need to pass event number to the API.
We suggest client store the event information in device node,
so we provide an API for client parse the event property.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c | 18 ++++++++++++++++++
 include/linux/soc/mediatek/mtk-cmdq.h  | 12 ++++++++++++
 2 files changed, 30 insertions(+)

Comments

CK Hu May 16, 2019, 10:27 a.m. UTC | #1
Hi, Bibby:

On Thu, 2019-05-16 at 17:02 +0800, Bibby Hsieh wrote:
> When client ask gce to clear or wait for event,
> client need to pass event number to the API.
> We suggest client store the event information in device node,
> so we provide an API for client parse the event property.
> 
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
> ---
>  drivers/soc/mediatek/mtk-cmdq-helper.c | 18 ++++++++++++++++++
>  include/linux/soc/mediatek/mtk-cmdq.h  | 12 ++++++++++++
>  2 files changed, 30 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index a64060a34e01..e9658063c3d4 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -52,6 +52,24 @@ struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx)
>  }
>  EXPORT_SYMBOL(cmdq_dev_get_subsys);
>  
> +s32 cmdq_dev_get_event(struct device *dev, int index)
> +{
> +	s32 result;
> +
> +	if (!dev)
> +		return -EINVAL;
> +
> +	if (of_property_read_u32_index(dev->of_node, "mediatek,gce-events",
> +				       index, &result)) {
> +		dev_err(dev, "can't parse gce-events property");
> +
> +		return -ENODEV;
> +	}
> +
> +	return result;

This function just does one thing, so client driver could just directly
call of_property_read_u32_index().

Regards,
CK

> +}
> +EXPORT_SYMBOL(cmdq_dev_get_event);
> +
>  static void cmdq_client_timeout(struct timer_list *t)
>  {
>  	struct cmdq_client *client = from_timer(client, t, timer);
> diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> index 574006c5cd76..525713bf79b5 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -160,4 +160,16 @@ int cmdq_pkt_flush(struct cmdq_pkt *pkt);
>   */
>  struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx);
>  
> +/**
> + * cmdq_dev_get_event() - parse event from the device node of CMDQ client
> + * @dev:	device of CMDQ mailbox client
> + * @index:	the index of desired event
> + *
> + * Return: CMDQ event number
> + *
> + * Help CMDQ client pasing the event number
> + * from the device node of CMDQ client.
> + */
> +s32 cmdq_dev_get_event(struct device *dev, int index);
> +
>  #endif	/* __MTK_CMDQ_H__ */

Patch
diff mbox series

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index a64060a34e01..e9658063c3d4 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -52,6 +52,24 @@  struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx)
 }
 EXPORT_SYMBOL(cmdq_dev_get_subsys);
 
+s32 cmdq_dev_get_event(struct device *dev, int index)
+{
+	s32 result;
+
+	if (!dev)
+		return -EINVAL;
+
+	if (of_property_read_u32_index(dev->of_node, "mediatek,gce-events",
+				       index, &result)) {
+		dev_err(dev, "can't parse gce-events property");
+
+		return -ENODEV;
+	}
+
+	return result;
+}
+EXPORT_SYMBOL(cmdq_dev_get_event);
+
 static void cmdq_client_timeout(struct timer_list *t)
 {
 	struct cmdq_client *client = from_timer(client, t, timer);
diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
index 574006c5cd76..525713bf79b5 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -160,4 +160,16 @@  int cmdq_pkt_flush(struct cmdq_pkt *pkt);
  */
 struct cmdq_subsys *cmdq_dev_get_subsys(struct device *dev, int idx);
 
+/**
+ * cmdq_dev_get_event() - parse event from the device node of CMDQ client
+ * @dev:	device of CMDQ mailbox client
+ * @index:	the index of desired event
+ *
+ * Return: CMDQ event number
+ *
+ * Help CMDQ client pasing the event number
+ * from the device node of CMDQ client.
+ */
+s32 cmdq_dev_get_event(struct device *dev, int index);
+
 #endif	/* __MTK_CMDQ_H__ */