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video: tegra: support clock set rate for isp5

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Dynamic frequency scaling based on the current workload is implemented
in the tegra_camera_platform driver. Registering the clock set rate
callback to allow the tegra_camera_platform driver to set the device
clock rate.

Bug 4374126

Signed-off-by: Johnny Liu <johnliu@nvidia.com>
Change-Id: Ic4e65428c25a2b95b975e88d3865d995549e8ca7
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3020545
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Ankur Pawar <ankurp@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Johnny Liu
2023-11-22 08:54:08 +00:00
committed by mobile promotions
parent 53ebc773be
commit d25c39fa00
1 changed files with 25 additions and 4 deletions
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29
drivers/video/tegra/host/isp/isp5.c
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@@ -1,15 +1,14 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* ISP5 driver
*
* Copyright (c) 2017-2023, NVIDIA Corporation. All rights reserved.
* SPDX-FileCopyrightText: Copyright (C) 2017-2023 NVIDIA CORPORATION. All rights reserved.
*/
#include <asm/ioctls.h>
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/dma-buf.h>
#include <linux/dma-mapping.h>
#include <linux/export.h>
#include <linux/fs.h>
#include <linux/module.h>
@@ -43,6 +42,7 @@
struct host_isp5 {
struct platform_device *pdev;
struct platform_device *isp_thi;
struct clk *clk;
};
static int isp5_alloc_syncpt(struct platform_device *pdev,
@@ -156,6 +156,18 @@ error:
return err;
}
static int isp5_set_rate(struct tegra_camera_dev_info *cdev_info, unsigned long rate)
{
struct nvhost_device_data *info = platform_get_drvdata(cdev_info->pdev);
struct host_isp5 *isp5 = info->private_data;
return clk_set_rate(isp5->clk, rate);
}
static struct tegra_camera_dev_ops isp5_cdev_ops = {
.set_rate = isp5_set_rate,
};
int isp5_priv_late_probe(struct platform_device *pdev)
{
struct tegra_camera_dev_info isp_info;
@@ -168,6 +180,8 @@ int isp5_priv_late_probe(struct platform_device *pdev)
isp_info.ppc = ISP_PPC;
isp_info.hw_type = HWTYPE_ISPA;
isp_info.pdev = pdev;
isp_info.ops = &isp5_cdev_ops;
err = tegra_camera_device_register(&isp_info, isp5);
if (err)
goto device_release;
@@ -186,6 +200,7 @@ device_release:
static int isp5_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct nvhost_device_data *pdata;
struct host_isp5 *isp5;
int err = 0;
@@ -197,6 +212,12 @@ static int isp5_probe(struct platform_device *pdev)
pdata = platform_get_drvdata(pdev);
isp5 = pdata->private_data;
isp5->clk = devm_clk_get(dev, NULL);
if (IS_ERR(isp5->clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(isp5->clk);
}
err = nvhost_client_device_get_resources(pdev);
if (err)
goto put_thi;