linux-kernel - Re: [PATCH 3/3] venus: core: add sc7180 DT compatible and resource struct

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Message-ID: <98c83352cae3a5e38a3711f81dc28df5@codeaurora.org>
Date:   Mon, 23 Dec 2019 15:34:45 +0530
From:   dikshita@...eaurora.org
To:     Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc:     linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        vgarodia@...eaurora.org
Subject: Re: [PATCH 3/3] venus: core: add sc7180 DT compatible and resource
 struct

Hi Stan,

Thanks for the review!

On 2019-12-20 15:03, Stanimir Varbanov wrote:
> Hi Dikshita,
> 
> Thanks for the patch!
> 
> On 12/20/19 9:59 AM, Dikshita Agarwal wrote:
>> This add DT compatible string and resource structure for sc7180.
>> 
>> Signed-off-by: Dikshita Agarwal <dikshita@...eaurora.org>
>> ---
>>  drivers/media/platform/qcom/venus/core.c | 58 
>> +++++++++++++++++++++++++++++++-
>>  1 file changed, 57 insertions(+), 1 deletion(-)
>> 
>> diff --git a/drivers/media/platform/qcom/venus/core.c 
>> b/drivers/media/platform/qcom/venus/core.c
>> index c7525d9..e8c8b28 100644
>> --- a/drivers/media/platform/qcom/venus/core.c
>> +++ b/drivers/media/platform/qcom/venus/core.c
>> @@ -469,7 +469,7 @@ static __maybe_unused int 
>> venus_runtime_resume(struct device *dev)
>>  	{ 2073600, 3929000, 0, 5551000, 0 },	/* 4096x2160@60 */
>>  	{ 1036800, 1987000, 0, 2797000, 0 },	/* 4096x2160@30 */
>>  	{  489600, 1040000, 0, 1298000, 0 },	/* 1920x1080@60 */
>> -	{  244800,  530000, 0,  659000, 0 },	/* 1920x1080@30 */
>> +	{  244800,  442000, 0,  659000, 0 },	/* 1920x1080@30 */
> 
> unrelated change, please drop it
Sure, I will address this in next version.
> 
>>  };
>> 
>>  static const struct venus_resources sdm845_res = {
>> @@ -521,11 +521,67 @@ static __maybe_unused int 
>> venus_runtime_resume(struct device *dev)
>>  	.fwname = "qcom/venus-5.2/venus.mdt",
>>  };
>> 
>> +static const struct freq_tbl sc7180_freq_table[] = {
>> +	{  0, 380000000 },
>> +	{  0, 340000000 },
>> +	{  0, 270000000 },
>> +	{  0, 150000000 },
> 
> why .load is zero?
.load is not being used any longer to calculate load and is a dummy 
value.
So keeping it 0.

> 
>> +};
>> +
>> +static struct codec_freq_data sc7180_codec_freq_data[] =  {
>> +	{ V4L2_PIX_FMT_H264, VIDC_SESSION_TYPE_ENC, 675, 10 },
>> +	{ V4L2_PIX_FMT_HEVC, VIDC_SESSION_TYPE_ENC, 675, 10 },
>> +	{ V4L2_PIX_FMT_VP8, VIDC_SESSION_TYPE_ENC, 675, 10 },
>> +	{ V4L2_PIX_FMT_MPEG2, VIDC_SESSION_TYPE_DEC, 200, 10 },
>> +	{ V4L2_PIX_FMT_H264, VIDC_SESSION_TYPE_DEC, 200, 10 },
>> +	{ V4L2_PIX_FMT_HEVC, VIDC_SESSION_TYPE_DEC, 200, 10 },
>> +	{ V4L2_PIX_FMT_VP8, VIDC_SESSION_TYPE_DEC, 200, 10 },
>> +	{ V4L2_PIX_FMT_VP9, VIDC_SESSION_TYPE_DEC, 200, 10 },
>> +};
> 
> the table is exactly the same as sdm845 one, please reuse it.
Sure, I will address this in next version.
> 
>> +
>> +static const struct bw_tbl sc7180_bw_table_enc[] = {
>> +	{  972000,  750000, 0, 0, 0 },	/* 3840x2160@30 */
>> +	{  489600,  451000, 0, 0, 0 },	/* 1920x1080@60 */
>> +	{  244800,  234000, 0, 0, 0 },	/* 1920x1080@30 */
>> +};
>> +
>> +static const struct bw_tbl sc7180_bw_table_dec[] = {
>> +	{ 1036800, 1386000, 0, 1875000, 0 },	/* 4096x2160@30 */
>> +	{  489600,  865000, 0, 1146000, 0 },	/* 1920x1080@60 */
>> +	{  244800,  530000, 0,  583000, 0 },	/* 1920x1080@30 */
>> +};
>> +
>> +static const struct venus_resources sc7180_res = {
>> +	.freq_tbl = sc7180_freq_table,
>> +	.freq_tbl_size = ARRAY_SIZE(sc7180_freq_table),
>> +	.bw_tbl_enc = sc7180_bw_table_enc,
>> +	.bw_tbl_enc_size = ARRAY_SIZE(sc7180_bw_table_enc),
>> +	.bw_tbl_dec = sc7180_bw_table_dec,
>> +	.bw_tbl_dec_size = ARRAY_SIZE(sc7180_bw_table_dec),
>> +	.codec_freq_data = sc7180_codec_freq_data,
>> +	.codec_freq_data_size = ARRAY_SIZE(sc7180_codec_freq_data),
>> +	.clks = {"core", "iface", "bus" },
>> +	.clks_num = 3,
>> +	.vcodec0_clks = { "vcodec0_core", "vcodec0_bus" },
>> +	.vcodec_clks_num = 2,
>> +	.vcodec_pmdomains = { "venus", "vcodec0" },
>> +	.vcodec_pmdomains_num = 2,
>> +	.vcodec_num = 1,
>> +	.max_load = 3110400,	/* 4096x2160@90 */
> 
> Looking into above bandwidth tables I can guess that the maximimum load
> is reached at 4096x2160@30? If so you have to change it here.

After checking further on this I see that max_load can be removed since
it is not being used now to determine if H/W is overloaded or not.
What do you suggest?
> 
> <cut>