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FROMLIST: media: iris: Fix VSP clock calculation for high bitrate str… #1250

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FROMLIST: media: iris: Fix VSP clock calculation for high bitrate str… #1250

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29 changes: 28 additions & 1 deletion drivers/media/platform/qcom/iris/iris_vpu_common.c
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Original file line number Diff line number Diff line change
Expand Up @@ -423,11 +423,32 @@ void iris_vpu35_vpu4x_program_bootup_registers(struct iris_core *core)
writel(0x1, core->reg_base + WRAPPER_IRIS_VCODEC_VPU_WRAPPER_SPARE_0);
}

static u64 iris_get_vsp_ref_bitrate(struct iris_inst *inst)
{
struct device *dev = inst->core->dev;
u32 codec = inst->codec;

switch (codec) {
case V4L2_PIX_FMT_H264:
return 150;
case V4L2_PIX_FMT_HEVC:
return 140;
case V4L2_PIX_FMT_VP9:
return 70;
case V4L2_PIX_FMT_AV1:
return 100;
default:
dev_err(dev, "Unsupported codec\n");
return 1;
}
}

u64 iris_vpu3x_vpu4x_calculate_frequency(struct iris_inst *inst, size_t data_size)
{
struct platform_inst_caps *caps = inst->core->iris_platform_data->inst_caps;
struct v4l2_format *inp_f = inst->fmt_src;
u32 height, width, mbs_per_second, mbpf;
u64 vsp_ref_bitrate, vsp_ref_freq;
u64 fw_cycles, fw_vpp_cycles;
u64 vsp_cycles, vpp_cycles;
u32 fps = inst->frame_rate;
Expand All @@ -454,7 +475,13 @@ u64 iris_vpu3x_vpu4x_calculate_frequency(struct iris_inst *inst, size_t data_siz
vpp_cycles += div_u64(vpp_cycles * 5, 100);

vsp_cycles = fps * data_size * 8;
vsp_cycles = div_u64(vsp_cycles, 2);
vsp_ref_bitrate = iris_get_vsp_ref_bitrate(inst);
vsp_ref_freq = inst->codec == V4L2_PIX_FMT_AV1 ? 533 : 444;
vsp_cycles = div_u64(vsp_ref_freq * vsp_cycles, vsp_ref_bitrate);

/* VSP FW SW offset */
vsp_cycles = div_u64(vsp_cycles * 1000, 1055);

/* VSP FW overhead 1.05 */
vsp_cycles = div_u64(vsp_cycles * 21, 20);

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