linux-kernel - Re: [PATCH 13/13] media: qcom: camss: Add support for VFE hardware version Titan 780

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Message-ID: <c7aa6519-0706-4cc2-b043-43f31a78ab5b@linaro.org>
Date: Sat, 24 Aug 2024 16:31:45 +0300
From: Vladimir Zapolskiy <vladimir.zapolskiy@...aro.org>
To: Depeng Shao <quic_depengs@...cinc.com>, rfoss@...nel.org,
 todor.too@...il.com, bryan.odonoghue@...aro.org, mchehab@...nel.org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org
Cc: linux-arm-msm@...r.kernel.org, linux-media@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 kernel@...cinc.com, Yongsheng Li <quic_yon@...cinc.com>
Subject: Re: [PATCH 13/13] media: qcom: camss: Add support for VFE hardware
 version Titan 780

On 8/21/24 14:11, Vladimir Zapolskiy wrote:
> On 8/12/24 17:41, Depeng Shao wrote:
>> Add support for VFE found on SM8550 (Titan 780). This implementation is
>> based on the titan 480 implementation. It supports the normal and lite
>> VFE.
>>
>> Co-developed-by: Yongsheng Li <quic_yon@...cinc.com>
>> Signed-off-by: Yongsheng Li <quic_yon@...cinc.com>
>> Signed-off-by: Depeng Shao <quic_depengs@...cinc.com>
>> ---
> 
> <snip>
> 
>> +
>> +static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
>> +{
>> +	int port_id = line_id;
>> +
>> +	/* RUP(register update) registers has beem moved to CSID in Titan 780.
>> +	 * Notify the event of trigger RUP.
>> +	 */
>> +	camss_reg_update(vfe->camss, vfe->id, port_id, false);
>> +}
>> +
>> +static inline void vfe_reg_update_clear(struct vfe_device *vfe,
>> +					enum vfe_line_id line_id)
>> +{
>> +	int port_id = line_id;
> 
> Once I said that the comment with a typo can be removed from these two
> functions, however the functions can be removed, since they are trivial,
> use camss_reg_update(vfe->camss, vfe->id, port_id, ...) directly in the code.
> 

I see that these new vfe_reg_update() and vfe_reg_update_clear() are
callback functions now, so, without making a step back, now it will not
be straightforward to get rid of one more level of indirection.

Just remove the comments then.

>> +
>> +	/* RUP(register update) registers has beem moved to CSID in Titan 780.
>> +	 * Notify the event of trigger RUP clear.
>> +	 */
>> +	camss_reg_update(vfe->camss, vfe->id, port_id, true);
>> +}
>> +

--
Best wishes,
Vladimir