linux-kernel - Re: [PATCH v2 11/14] soc: mediatek: cmdq: export finalize function

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Date:   Tue, 10 Dec 2019 15:50:21 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <wsd_upstream@...iatek.com>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>,
        Houlong Wei <houlong.wei@...iatek.com>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 11/14] soc: mediatek: cmdq: export finalize function

Hi, Dennis:

On Wed, 2019-11-27 at 09:58 +0800, Dennis YC Hsieh wrote:
> Export finalize function to client which helps append eoc and jump
> command to pkt.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@...iatek.com>
> ---
>  drivers/soc/mediatek/mtk-cmdq-helper.c | 7 ++-----
>  include/linux/soc/mediatek/mtk-cmdq.h  | 8 ++++++++
>  2 files changed, 10 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index 244b8528eb16..38e0c13e1922 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -392,7 +392,7 @@ int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value)
>  }
>  EXPORT_SYMBOL(cmdq_pkt_assign);
>  
> -static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
> +int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
>  {
>  	struct cmdq_client *cl = pkt->cl;
>  	struct cmdq_instruction inst = { {0} };
> @@ -412,6 +412,7 @@ static int cmdq_pkt_finalize(struct cmdq_pkt *pkt)
>  
>  	return err;
>  }
> +EXPORT_SYMBOL(cmdq_pkt_finalize);
>  
>  static void cmdq_pkt_flush_async_cb(struct cmdq_cb_data data)
>  {
> @@ -446,10 +447,6 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
>  	unsigned long flags = 0;
>  	struct cmdq_client *client = (struct cmdq_client *)pkt->cl;
>  
> -	err = cmdq_pkt_finalize(pkt);
> -	if (err < 0)
> -		return err;
> -
>  	pkt->cb.cb = cb;
>  	pkt->cb.data = data;
>  	pkt->async_cb.cb = cmdq_pkt_flush_async_cb;
> diff --git a/include/linux/soc/mediatek/mtk-cmdq.h b/include/linux/soc/mediatek/mtk-cmdq.h
> index 4bce240dbb56..998bc90f9da9 100644
> --- a/include/linux/soc/mediatek/mtk-cmdq.h
> +++ b/include/linux/soc/mediatek/mtk-cmdq.h
> @@ -204,6 +204,14 @@ int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
>   */
>  int cmdq_pkt_assign(struct cmdq_pkt *pkt, u16 reg_idx, u32 value);
>  
> +/**
> + * cmdq_pkt_finalize() - Append EOC and jump command to pkt.
> + * @pkt:	the CMDQ packet
> + *
> + * Return: 0 for success; else the error code is returned
> + */
> +int cmdq_pkt_finalize(struct cmdq_pkt *pkt);
> +
>  /**
>   * cmdq_pkt_flush_async() - trigger CMDQ to asynchronously execute the CMDQ
>   *                          packet and call back at the end of done packet