mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-18 20:56:12 +00:00
ef0baf36f7
Implement power scaling including a specific vpu2 and vpu3 calculation for clock and bus bandwidth, which depends on the hardware configuration, codec format, resolution and frame rate. Signed-off-by: Vedang Nagar <quic_vnagar@quicinc.com> Tested-by: Stefan Schmidt <stefan.schmidt@linaro.org> # x1e80100 (Dell XPS 13 9345) Reviewed-by: Stefan Schmidt <stefan.schmidt@linaro.org> Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-HDK Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
140 lines
3.1 KiB
C
140 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/pm_opp.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <media/v4l2-mem2mem.h>
|
|
|
|
#include "iris_buffer.h"
|
|
#include "iris_instance.h"
|
|
#include "iris_power.h"
|
|
#include "iris_resources.h"
|
|
#include "iris_vpu_common.h"
|
|
|
|
static u32 iris_calc_bw(struct iris_inst *inst, struct icc_vote_data *data)
|
|
{
|
|
const struct bw_info *bw_tbl = NULL;
|
|
struct iris_core *core = inst->core;
|
|
u32 num_rows, i, mbs, mbps;
|
|
u32 icc_bw = 0;
|
|
|
|
mbs = DIV_ROUND_UP(data->height, 16) * DIV_ROUND_UP(data->width, 16);
|
|
mbps = mbs * data->fps;
|
|
if (mbps == 0)
|
|
goto exit;
|
|
|
|
bw_tbl = core->iris_platform_data->bw_tbl_dec;
|
|
num_rows = core->iris_platform_data->bw_tbl_dec_size;
|
|
|
|
for (i = 0; i < num_rows; i++) {
|
|
if (i != 0 && mbps > bw_tbl[i].mbs_per_sec)
|
|
break;
|
|
|
|
icc_bw = bw_tbl[i].bw_ddr;
|
|
}
|
|
|
|
exit:
|
|
return icc_bw;
|
|
}
|
|
|
|
static int iris_set_interconnects(struct iris_inst *inst)
|
|
{
|
|
struct iris_core *core = inst->core;
|
|
struct iris_inst *instance;
|
|
u64 total_bw_ddr = 0;
|
|
int ret;
|
|
|
|
mutex_lock(&core->lock);
|
|
list_for_each_entry(instance, &core->instances, list) {
|
|
if (!instance->max_input_data_size)
|
|
continue;
|
|
|
|
total_bw_ddr += instance->power.icc_bw;
|
|
}
|
|
|
|
ret = iris_set_icc_bw(core, total_bw_ddr);
|
|
|
|
mutex_unlock(&core->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iris_vote_interconnects(struct iris_inst *inst)
|
|
{
|
|
struct icc_vote_data *vote_data = &inst->icc_data;
|
|
struct v4l2_format *inp_f = inst->fmt_src;
|
|
|
|
vote_data->width = inp_f->fmt.pix_mp.width;
|
|
vote_data->height = inp_f->fmt.pix_mp.height;
|
|
vote_data->fps = DEFAULT_FPS;
|
|
|
|
inst->power.icc_bw = iris_calc_bw(inst, vote_data);
|
|
|
|
return iris_set_interconnects(inst);
|
|
}
|
|
|
|
static int iris_set_clocks(struct iris_inst *inst)
|
|
{
|
|
struct iris_core *core = inst->core;
|
|
struct iris_inst *instance;
|
|
u64 freq = 0;
|
|
int ret;
|
|
|
|
mutex_lock(&core->lock);
|
|
list_for_each_entry(instance, &core->instances, list) {
|
|
if (!instance->max_input_data_size)
|
|
continue;
|
|
|
|
freq += instance->power.min_freq;
|
|
}
|
|
|
|
core->power.clk_freq = freq;
|
|
ret = dev_pm_opp_set_rate(core->dev, freq);
|
|
mutex_unlock(&core->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int iris_scale_clocks(struct iris_inst *inst)
|
|
{
|
|
const struct vpu_ops *vpu_ops = inst->core->iris_platform_data->vpu_ops;
|
|
struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
|
|
struct v4l2_m2m_buffer *buffer, *n;
|
|
struct iris_buffer *buf;
|
|
size_t data_size = 0;
|
|
|
|
v4l2_m2m_for_each_src_buf_safe(m2m_ctx, buffer, n) {
|
|
buf = to_iris_buffer(&buffer->vb);
|
|
data_size = max(data_size, buf->data_size);
|
|
}
|
|
|
|
inst->max_input_data_size = data_size;
|
|
if (!inst->max_input_data_size)
|
|
return 0;
|
|
|
|
inst->power.min_freq = vpu_ops->calc_freq(inst, inst->max_input_data_size);
|
|
|
|
return iris_set_clocks(inst);
|
|
}
|
|
|
|
int iris_scale_power(struct iris_inst *inst)
|
|
{
|
|
struct iris_core *core = inst->core;
|
|
int ret;
|
|
|
|
if (pm_runtime_suspended(core->dev)) {
|
|
ret = pm_runtime_resume_and_get(core->dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
pm_runtime_put_autosuspend(core->dev);
|
|
}
|
|
|
|
ret = iris_scale_clocks(inst);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return iris_vote_interconnects(inst);
|
|
}
|