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drm/tegra: Bridge tegra_wmark devfreq with host1x

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To support actmon DFS for nvdec with tegra_wmark govenor, the nvdec
driver needs to provide interrupt handling callback function for host1x,
and watermark update callback for tegra_wmark govenor.

Bug 200493763

Signed-off-by: Johnny Liu <johnliu@nvidia.com>
Change-Id: I0cbf882da1ccb3243c48fc65dce6eec5f68f6abe
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2900038
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Johnny Liu
2023-05-08 08:31:52 +00:00
committed by mobile promotions
parent e4fcb41e8a
commit fa6b38eb2a
1 changed files with 74 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
drivers/gpu/drm/tegra/nvdec.c
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@@ -6,6 +6,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/devfreq.h>
#include <linux/devfreq/tegra_wmark.h>
#include <linux/dma-mapping.h>
#include <linux/host1x-next.h>
#include <linux/iommu.h>
@@ -183,6 +184,21 @@ release_reset:
return err;
}
static void nvdec_devfreq_update_wmark_threshold(struct devfreq *devfreq,
struct devfreq_tegra_wmark_config *cfg)
{
struct nvdec *nvdec = dev_get_drvdata(devfreq->dev.parent);
struct host1x_client *client = &nvdec->client.base;
host1x_actmon_update_active_wmark(client,
cfg->avg_upper_wmark,
cfg->avg_lower_wmark,
cfg->consec_upper_wmark,
cfg->consec_lower_wmark,
cfg->upper_wmark_enabled,
cfg->lower_wmark_enabled);
}
static int nvdec_devfreq_target(struct device *dev, unsigned long *freq, u32 flags)
{
struct nvdec *nvdec = dev_get_drvdata(dev);
@@ -225,13 +241,6 @@ static int nvdec_devfreq_get_cur_freq(struct device *dev, unsigned long *freq)
return 0;
}
static struct devfreq_dev_profile nvdec_devfreq_profile = {
.target = nvdec_devfreq_target,
.get_dev_status = nvdec_devfreq_get_dev_status,
.get_cur_freq = nvdec_devfreq_get_cur_freq,
.polling_ms = 100,
};
static int nvdec_devfreq_init(struct nvdec *nvdec)
{
struct clk *clk = nvdec->clks[0].clk;
@@ -239,6 +248,8 @@ static int nvdec_devfreq_init(struct nvdec *nvdec)
unsigned long min_rate = clk_round_rate(clk, 0);
unsigned long margin = clk_round_rate(clk, min_rate + 1) - min_rate;
unsigned long rate = min_rate;
struct devfreq_tegra_wmark_data *data;
struct devfreq_dev_profile *devfreq_profile;
struct devfreq *devfreq;
while (rate <= max_rate) {
@@ -246,15 +257,32 @@ static int nvdec_devfreq_init(struct nvdec *nvdec)
rate += margin;
}
data = devm_kzalloc(nvdec->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->event = DEVFREQ_TEGRA_AVG_WMARK_BELOW;
data->update_wmark_threshold = nvdec_devfreq_update_wmark_threshold;
devfreq_profile = devm_kzalloc(nvdec->dev, sizeof(*devfreq_profile), GFP_KERNEL);
if (!devfreq_profile)
return -ENOMEM;
devfreq_profile->target = nvdec_devfreq_target;
devfreq_profile->get_dev_status = nvdec_devfreq_get_dev_status;
devfreq_profile->get_cur_freq = nvdec_devfreq_get_cur_freq;
devfreq_profile->initial_freq = max_rate;
devfreq_profile->polling_ms = 100;
devfreq = devm_devfreq_add_device(nvdec->dev,
&nvdec_devfreq_profile,
devfreq_profile,
DEVFREQ_GOV_USERSPACE,
NULL);
data);
if (IS_ERR(devfreq))
return PTR_ERR(devfreq);
devfreq->suspend_freq = min_rate;
devfreq->resume_freq = min_rate;
devfreq->resume_freq = max_rate;
nvdec->devfreq = devfreq;
return 0;
@@ -364,10 +392,46 @@ static unsigned long nvdec_get_rate(struct host1x_client *client)
return clk_get_rate(nvdec->clks[0].clk);
}
static void nvdec_actmon_event(struct host1x_client *client,
enum host1x_actmon_wmark_event event)
{
struct platform_device *pdev = to_platform_device(client->dev);
struct nvdec *nvdec = platform_get_drvdata(pdev);
struct devfreq *df = nvdec->devfreq;
struct devfreq_tegra_wmark_data *data;
if (!df)
return;
data = df->data;
switch (event) {
case HOST1X_ACTMON_AVG_WMARK_BELOW:
data->event = DEVFREQ_TEGRA_AVG_WMARK_BELOW;
break;
case HOST1X_ACTMON_AVG_WMARK_ABOVE:
data->event = DEVFREQ_TEGRA_AVG_WMARK_ABOVE;
break;
case HOST1X_ACTMON_CONSEC_WMARK_BELOW:
data->event = DEVFREQ_TEGRA_CONSEC_WMARK_BELOW;
break;
case HOST1X_ACTMON_CONSEC_WMARK_ABOVE:
data->event = DEVFREQ_TEGRA_CONSEC_WMARK_ABOVE;
break;
default:
return;
}
mutex_lock(&df->lock);
update_devfreq(df);
mutex_unlock(&df->lock);
}
static const struct host1x_client_ops nvdec_client_ops = {
.init = nvdec_init,
.exit = nvdec_exit,
.get_rate = nvdec_get_rate,
.actmon_event = nvdec_actmon_event,
};
static int nvdec_load_falcon_firmware(struct nvdec *nvdec)