diff mbox series

[06/10] soc: mediatek: add register device function

Message ID 1548747128-60136-7-git-send-email-bibby.hsieh@mediatek.com (mailing list archive)
State New, archived
Headers show
Series support gce on mt8183 platform | expand

Commit Message

Bibby Hsieh Jan. 29, 2019, 7:32 a.m. UTC 
GCE cannot know the register base address, we store the subsys-base address
relationship in the device node, and store the relationship by
cmdq_register_device function.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
 drivers/soc/mediatek/mtk-cmdq-helper.c | 24 ++++++++++++++++++++++++
 include/linux/soc/mediatek/mtk-cmdq.h  |  1 +
 2 files changed, 25 insertions(+)

Comments

Pi-Hsun Shih Jan. 30, 2019, 6 a.m. UTC | #1 
On 01/29/2019 03:32 PM, Bibby Hsieh wrote:
> GCE cannot know the register base address, we store the subsys-base address
> relationship in the device node, and store the relationship by
> cmdq_register_device function.
> 
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
> ---
>   drivers/soc/mediatek/mtk-cmdq-helper.c | 24 ++++++++++++++++++++++++
>   include/linux/soc/mediatek/mtk-cmdq.h  |  1 +
>   2 files changed, 25 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 6e4b85e..6ad997f 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -32,6 +32,30 @@ u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base)
>   }
>   EXPORT_SYMBOL(cmdq_subsys_base_to_id);
>   
> +struct cmdq_base *cmdq_register_device(struct device *dev)
> +{
> +	struct cmdq_base *clt_base;
> +	struct of_phandle_args spec;
> +	u32 idx;
> +
> +	clt_base = devm_kzalloc(dev, sizeof(*clt_base), GFP_KERNEL);
> +	if (!clt_base)
> +		return NULL;
> +
> +	/* parse subsys */
> +	for (idx = 0; idx < ARRAY_SIZE(clt_base->subsys); idx++) {
> +		if (of_parse_phandle_with_args(dev->of_node, "gce-subsys",
> +		    "#gce-subsys-cells", idx, &spec))

nit: Should have more indention for the line above. (Align with the
dev->of_node?)

> +			break;
> +		clt_base->subsys[idx].base = spec.args[0];
> +		clt_base->subsys[idx].id = spec.args[1];
> +	}
> +	clt_base->count = idx;
> +
> +	return clt_base;
> +}
> +EXPORT_SYMBOL(cmdq_register_device);
> +
>   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 0c7a6ee..a1f5eb6 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -138,5 +138,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
>   int cmdq_pkt_flush(struct cmdq_pkt *pkt);
>   
>   u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base);
> +struct cmdq_base *cmdq_register_device(struct device *dev);
>   
>   #endif	/* __MTK_CMDQ_H__ */
>
CK Hu (胡俊光) Feb. 1, 2019, 1:31 a.m. UTC | #2 
Hi, Bibby:

On Tue, 2019-01-29 at 15:32 +0800, Bibby Hsieh wrote:
> GCE cannot know the register base address, we store the subsys-base address
> relationship in the device node, and store the relationship by
> cmdq_register_device function.
> 
> Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
> ---
>  drivers/soc/mediatek/mtk-cmdq-helper.c | 24 ++++++++++++++++++++++++
>  include/linux/soc/mediatek/mtk-cmdq.h  |  1 +
>  2 files changed, 25 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 6e4b85e..6ad997f 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -32,6 +32,30 @@ u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base)
>  }
>  EXPORT_SYMBOL(cmdq_subsys_base_to_id);
>  
> +struct cmdq_base *cmdq_register_device(struct device *dev)
> +{
> +	struct cmdq_base *clt_base;
> +	struct of_phandle_args spec;
> +	u32 idx;
> +
> +	clt_base = devm_kzalloc(dev, sizeof(*clt_base), GFP_KERNEL);
> +	if (!clt_base)
> +		return NULL;
> +
> +	/* parse subsys */
> +	for (idx = 0; idx < ARRAY_SIZE(clt_base->subsys); idx++) {
> +		if (of_parse_phandle_with_args(dev->of_node, "gce-subsys",
> +		    "#gce-subsys-cells", idx, &spec))
> +			break;
> +		clt_base->subsys[idx].base = spec.args[0];
> +		clt_base->subsys[idx].id = spec.args[1];

This does not match the binding [1].

[1]
https://www.kernel.org/doc/Documentation/devicetree/bindings/mailbox/mtk-gce.txt

Regards,
CK

> +	}
> +	clt_base->count = idx;
> +
> +	return clt_base;
> +}
> +EXPORT_SYMBOL(cmdq_register_device);
> +
>  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 0c7a6ee..a1f5eb6 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -138,5 +138,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
>  int cmdq_pkt_flush(struct cmdq_pkt *pkt);
>  
>  u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base);
> +struct cmdq_base *cmdq_register_device(struct device *dev);
>  
>  #endif	/* __MTK_CMDQ_H__ */
diff mbox series

Patch

diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
index 6e4b85e..6ad997f 100644
--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -32,6 +32,30 @@  u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base)
 }
 EXPORT_SYMBOL(cmdq_subsys_base_to_id);
 
+struct cmdq_base *cmdq_register_device(struct device *dev)
+{
+	struct cmdq_base *clt_base;
+	struct of_phandle_args spec;
+	u32 idx;
+
+	clt_base = devm_kzalloc(dev, sizeof(*clt_base), GFP_KERNEL);
+	if (!clt_base)
+		return NULL;
+
+	/* parse subsys */
+	for (idx = 0; idx < ARRAY_SIZE(clt_base->subsys); idx++) {
+		if (of_parse_phandle_with_args(dev->of_node, "gce-subsys",
+		    "#gce-subsys-cells", idx, &spec))
+			break;
+		clt_base->subsys[idx].base = spec.args[0];
+		clt_base->subsys[idx].id = spec.args[1];
+	}
+	clt_base->count = idx;
+
+	return clt_base;
+}
+EXPORT_SYMBOL(cmdq_register_device);
+
 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 0c7a6ee..a1f5eb6 100644
--- a/include/linux/soc/mediatek/mtk-cmdq.h
+++ b/include/linux/soc/mediatek/mtk-cmdq.h
@@ -138,5 +138,6 @@  int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
 int cmdq_pkt_flush(struct cmdq_pkt *pkt);
 
 u8 cmdq_subsys_base_to_id(struct cmdq_base *clt_base, u32 base);
+struct cmdq_base *cmdq_register_device(struct device *dev);
 
 #endif	/* __MTK_CMDQ_H__ */