linux-kernel - Re: [PATCH v1 1/3] soc: mediatek: mtk-cmdq: Move mask build and append to function

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Message-ID: <c91c920b-ecc9-431e-9e35-36f243fb9cd1@gmail.com>
Date: Wed, 2 Oct 2024 14:33:36 +0200
From: Matthias Brugger <matthias.bgg@...il.com>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 linux-mediatek@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 kernel@...labora.com
Subject: Re: [PATCH v1 1/3] soc: mediatek: mtk-cmdq: Move mask build and
 append to function



On 18/09/2024 12:06, AngeloGioacchino Del Regno wrote:
> Move the CMDQ_CODE_MASK packet build and append logic to a new
> cmdq_pkt_mask() function; this reduces code duplication by 4x.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>

> ---
>   drivers/soc/mediatek/mtk-cmdq-helper.c | 31 ++++++++++++--------------
>   1 file changed, 14 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c b/drivers/soc/mediatek/mtk-cmdq-helper.c
> index a8fccedba83f..620c371fd1fc 100644
> --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> @@ -180,6 +180,15 @@ static int cmdq_pkt_append_command(struct cmdq_pkt *pkt,
>   	return 0;
>   }
>   
> +static int cmdq_pkt_mask(struct cmdq_pkt *pkt, u32 mask)
> +{
> +	struct cmdq_instruction inst = {
> +		.op = CMDQ_CODE_MASK,
> +		.mask = ~mask
> +	};
> +	return cmdq_pkt_append_command(pkt, inst);
> +}
> +
>   int cmdq_pkt_write(struct cmdq_pkt *pkt, u8 subsys, u16 offset, u32 value)
>   {
>   	struct cmdq_instruction inst;
> @@ -196,14 +205,11 @@ EXPORT_SYMBOL(cmdq_pkt_write);
>   int cmdq_pkt_write_mask(struct cmdq_pkt *pkt, u8 subsys,
>   			u16 offset, u32 value, u32 mask)
>   {
> -	struct cmdq_instruction inst = { {0} };
>   	u16 offset_mask = offset;
>   	int err;
>   
>   	if (mask != 0xffffffff) {
> -		inst.op = CMDQ_CODE_MASK;
> -		inst.mask = ~mask;
> -		err = cmdq_pkt_append_command(pkt, inst);
> +		err = cmdq_pkt_mask(pkt, mask);
>   		if (err < 0)
>   			return err;
>   
> @@ -251,9 +257,7 @@ int cmdq_pkt_write_s_mask(struct cmdq_pkt *pkt, u16 high_addr_reg_idx,
>   	struct cmdq_instruction inst = {};
>   	int err;
>   
> -	inst.op = CMDQ_CODE_MASK;
> -	inst.mask = ~mask;
> -	err = cmdq_pkt_append_command(pkt, inst);
> +	err = cmdq_pkt_mask(pkt, mask);
>   	if (err < 0)
>   		return err;
>   
> @@ -288,9 +292,7 @@ int cmdq_pkt_write_s_mask_value(struct cmdq_pkt *pkt, u8 high_addr_reg_idx,
>   	struct cmdq_instruction inst = {};
>   	int err;
>   
> -	inst.op = CMDQ_CODE_MASK;
> -	inst.mask = ~mask;
> -	err = cmdq_pkt_append_command(pkt, inst);
> +	err = cmdq_pkt_mask(pkt, mask);
>   	if (err < 0)
>   		return err;
>   
> @@ -409,12 +411,9 @@ EXPORT_SYMBOL(cmdq_pkt_poll);
>   int cmdq_pkt_poll_mask(struct cmdq_pkt *pkt, u8 subsys,
>   		       u16 offset, u32 value, u32 mask)
>   {
> -	struct cmdq_instruction inst = { {0} };
>   	int err;
>   
> -	inst.op = CMDQ_CODE_MASK;
> -	inst.mask = ~mask;
> -	err = cmdq_pkt_append_command(pkt, inst);
> +	err = cmdq_pkt_mask(pkt, mask);
>   	if (err < 0)
>   		return err;
>   
> @@ -436,9 +435,7 @@ int cmdq_pkt_poll_addr(struct cmdq_pkt *pkt, dma_addr_t addr, u32 value, u32 mas
>   	 * which enables use_mask bit.
>   	 */
>   	if (mask != GENMASK(31, 0)) {
> -		inst.op = CMDQ_CODE_MASK;
> -		inst.mask = ~mask;
> -		ret = cmdq_pkt_append_command(pkt, inst);
> +		ret = cmdq_pkt_mask(pkt, mask);
>   		if (ret < 0)
>   			return ret;
>   		use_mask = CMDQ_POLL_ENABLE_MASK;