linux-kernel - Re: [RESEND, PATCH 2/5] soc: mediatek: mtk-cmdq: Add cmdq_pkt_mem

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Date: Mon, 4 Mar 2024 15:52:38 +0000
From: Jason-JH Lin (林睿祥) <Jason-JH.Lin@...iatek.com>
To: CK Hu (胡俊光) <ck.hu@...iatek.com>,
	"jassisinghbrar@...il.com" <jassisinghbrar@...il.com>,
	"matthias.bgg@...il.com" <matthias.bgg@...il.com>, "chunkuang.hu@...nel.org"
	<chunkuang.hu@...nel.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	Singo Chang (張興國) <Singo.Chang@...iatek.com>,
	Jason-ch Chen (陳建豪)
	<Jason-ch.Chen@...iatek.com>, Shawn Sung (宋孝謙)
	<Shawn.Sung@...iatek.com>, Nancy Lin (林欣螢)
	<Nancy.Lin@...iatek.com>, Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>,
	"angelogioacchino.delregno@...labora.com"
	<angelogioacchino.delregno@...labora.com>
Subject: Re: [RESEND, PATCH 2/5] soc: mediatek: mtk-cmdq: Add
 cmdq_pkt_mem_move() function

Hi CK,

Thanks for the reviews.

On Mon, 2024-03-04 at 02:39 +0000, CK Hu (胡俊光) wrote:
> Hi, Jason:
> 
> On Fri, 2024-03-01 at 22:44 +0800, Jason-JH.Lin wrote:
> > Add cmdq_pkt_mem_move() function to support CMDQ user making
> > an instruction for moving a value from a source address to a
> > destination address.
> > 
> > Signed-off-by: Jason-JH.Lin <jason-jh.lin@...iatek.com>
> > ---
> >  drivers/soc/mediatek/mtk-cmdq-helper.c | 26
> > ++++++++++++++++++++++++++
> >  include/linux/soc/mediatek/mtk-cmdq.h  | 10 ++++++++++
> >  2 files changed, 36 insertions(+)
> > 
> > diff --git a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > index b0cd071c4719..3a1e47ad8a41 100644
> > --- a/drivers/soc/mediatek/mtk-cmdq-helper.c
> > +++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
> > @@ -299,6 +299,32 @@ int cmdq_pkt_write_s_mask_value(struct
> > cmdq_pkt
> > *pkt, u8 high_addr_reg_idx,
> >  }
> >  EXPORT_SYMBOL(cmdq_pkt_write_s_mask_value);
> >  
> > +s32 cmdq_pkt_mem_move(struct cmdq_pkt *pkt, dma_addr_t src_addr,
> > dma_addr_t dst_addr)
> 
> return type int.

OK, I'll change it.
> 
> > +{
> > +	s32 err;
> 
> It may not error, so I prefer to use 'ret'.
> Move this after the next two declaration.

OK, Ill change it to 'ret' and move it.
> 
> > +	const u16 tmp_reg_idx = CMDQ_THR_SPR_IDX0;
> > +	const u16 swap_reg_idx = CMDQ_THR_SPR_IDX1;
> 
> I would like tmp_reg_idx to be high_addr_reg_idx and swap_reg_idx to
> be
> value_reg_idx.
> 

OK, I'll rename them.

Regards,
Jason-JH.Lin

> Regards,
> CK
>