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

[dikshita@xxxxxxxxxxxxxx]

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@xxxxxxxxxxxxxx>
> > ---
> >  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>