mirror of
git://nv-tegra.nvidia.com/linux-nv-oot.git
synced 2025-12-22 09:11:26 +03:00
5a54d4161a
In Linux v6.12 the definition 'no_llseek' was finally removed. Since Linux v6.0 it had been redefined as NULL. Add a test to conftest to determine if 'no_llseek' is present and if not then it is no longer necessary to populate this and we can leave as NULL. Bug 4876974 Change-Id: I051fdb285b32260b5913dad89cabe0be04253f67 Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3222106 Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
278 lines
6.3 KiB
C
278 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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// SPDX-FileCopyrightText: Copyright (c) 2017-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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#include <nvidia/conftest.h>
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#include "nvcsi-t194.h"
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#include <uapi/linux/nvhost_nvcsi_ioctl.h>
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#include <linux/tegra-camera-rtcpu.h>
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#include <asm/ioctls.h>
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#include <linux/device.h>
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#include <linux/export.h>
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#include <linux/fs.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_graph.h>
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#include <linux/of_platform.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/uaccess.h>
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#include <linux/kthread.h>
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#include <linux/nvhost.h>
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#include <media/mc_common.h>
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#include <media/tegra_camera_platform.h>
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#include "camera/nvcsi/csi5_fops.h"
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#include "media/csi.h"
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/* PG rate based on max ISP throughput */
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#define PG_CLK_RATE 102000000
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/* width of interface between VI and CSI */
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#define CSI_BUS_WIDTH 64
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/* number of lanes per brick */
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#define NUM_LANES 4
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#define PHY_OFFSET 0x10000U
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#define CIL_A_SW_RESET 0x11024U
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#define CIL_B_SW_RESET 0x110b0U
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#define CSIA (1 << 20)
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#define CSIH (1 << 27)
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static struct tegra_csi_device *mc_csi;
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struct t194_nvcsi {
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struct platform_device *pdev;
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struct tegra_csi_device csi;
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struct dentry *dir;
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struct clk *clk;
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};
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struct nvhost_device_data t19_nvcsi_info = {
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.moduleid = 14, //NVHOST_MODULE_NVCSI,
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.clocks = {
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{"nvcsi", 400000000},
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},
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.devfs_name = "nvcsi",
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.autosuspend_delay = 500,
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.can_powergate = true,
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};
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static const struct of_device_id tegra194_nvcsi_of_match[] = {
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{
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.compatible = "nvidia,tegra194-nvcsi",
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.data = &t19_nvcsi_info,
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},
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{ },
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};
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MODULE_DEVICE_TABLE(of, tegra194_nvcsi_of_match);
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struct t194_nvcsi_file_private {
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struct platform_device *pdev;
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};
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static long t194_nvcsi_ioctl(struct file *file, unsigned int cmd,
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unsigned long arg)
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{
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return -ENOIOCTLCMD;
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}
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static int t194_nvcsi_open(struct inode *inode, struct file *file)
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{
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struct nvhost_device_data *pdata = container_of(inode->i_cdev,
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struct nvhost_device_data, ctrl_cdev);
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struct platform_device *pdev = pdata->pdev;
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struct t194_nvcsi_file_private *filepriv;
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filepriv = kzalloc(sizeof(*filepriv), GFP_KERNEL);
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if (unlikely(filepriv == NULL))
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return -ENOMEM;
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filepriv->pdev = pdev;
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file->private_data = filepriv;
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return nonseekable_open(inode, file);
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}
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static int t194_nvcsi_release(struct inode *inode, struct file *file)
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{
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struct t194_nvcsi_file_private *filepriv = file->private_data;
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kfree(filepriv);
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return 0;
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}
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const struct file_operations tegra194_nvcsi_ctrl_ops = {
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.owner = THIS_MODULE,
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#if defined(NV_NO_LLSEEK_PRESENT)
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.llseek = no_llseek,
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#endif
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.unlocked_ioctl = t194_nvcsi_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = t194_nvcsi_ioctl,
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#endif
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.open = t194_nvcsi_open,
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.release = t194_nvcsi_release,
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};
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int t194_nvcsi_early_probe(struct platform_device *pdev)
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{
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struct nvhost_device_data *pdata;
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struct t194_nvcsi *nvcsi;
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pdata = (void *)of_device_get_match_data(&pdev->dev);
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if (unlikely(pdata == NULL)) {
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dev_WARN(&pdev->dev, "no platform data\n");
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return -ENODATA;
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}
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nvcsi = devm_kzalloc(&pdev->dev, sizeof(*nvcsi), GFP_KERNEL);
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if (!nvcsi)
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return -ENOMEM;
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pdata->pdev = pdev;
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nvcsi->pdev = pdev;
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mutex_init(&pdata->lock);
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platform_set_drvdata(pdev, pdata);
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mc_csi = &nvcsi->csi;
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pdata->private_data = nvcsi;
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return 0;
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}
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static int t194_nvcsi_set_rate(struct tegra_camera_dev_info *cdev_info, unsigned long rate)
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{
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struct nvhost_device_data *info = platform_get_drvdata(cdev_info->pdev);
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struct t194_nvcsi *nvcsi = info->private_data;
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return clk_set_rate(nvcsi->clk, rate);
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}
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static struct tegra_camera_dev_ops t194_nvcsi_cdev_ops = {
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.set_rate = t194_nvcsi_set_rate,
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};
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int t194_nvcsi_late_probe(struct platform_device *pdev)
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{
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struct nvhost_device_data *pdata = platform_get_drvdata(pdev);
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struct t194_nvcsi *nvcsi = pdata->private_data;
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struct tegra_camera_dev_info csi_info;
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int err;
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memset(&csi_info, 0, sizeof(csi_info));
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csi_info.pdev = pdev;
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csi_info.hw_type = HWTYPE_CSI;
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csi_info.use_max = true;
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csi_info.bus_width = CSI_BUS_WIDTH;
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csi_info.lane_num = NUM_LANES;
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csi_info.pg_clk_rate = PG_CLK_RATE;
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csi_info.ops = &t194_nvcsi_cdev_ops;
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err = tegra_camera_device_register(&csi_info, nvcsi);
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if (err)
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return err;
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nvcsi->pdev = pdev;
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nvcsi->csi.fops = &csi5_fops;
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err = tegra_csi_media_controller_init(&nvcsi->csi, pdev);
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return 0;
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}
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static int t194_nvcsi_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct nvhost_device_data *pdata;
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struct t194_nvcsi *nvcsi;
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int err;
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err = t194_nvcsi_early_probe(pdev);
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if (err)
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return err;
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pdata = platform_get_drvdata(pdev);
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nvcsi = pdata->private_data;
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nvcsi->clk = devm_clk_get(dev, NULL);
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if (IS_ERR(nvcsi->clk)) {
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dev_err(&pdev->dev, "failed to get clock\n");
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return PTR_ERR(nvcsi->clk);
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}
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err = nvhost_client_device_get_resources(pdev);
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if (err)
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return err;
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err = nvhost_module_init(pdev);
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if (err)
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return err;
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err = nvhost_client_device_init(pdev);
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if (err) {
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nvhost_module_deinit(pdev);
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goto err_client_device_init;
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}
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err = t194_nvcsi_late_probe(pdev);
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if (err)
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goto err_mediacontroller_init;
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return 0;
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err_mediacontroller_init:
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nvhost_client_device_release(pdev);
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err_client_device_init:
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pdata->private_data = NULL;
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return err;
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}
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static int __exit t194_nvcsi_remove(struct platform_device *dev)
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{
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struct nvhost_device_data *pdata = platform_get_drvdata(dev);
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struct t194_nvcsi *nvcsi = pdata->private_data;
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tegra_camera_device_unregister(nvcsi);
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mc_csi = NULL;
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tegra_csi_media_controller_remove(&nvcsi->csi);
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return 0;
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}
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#if defined(NV_PLATFORM_DRIVER_STRUCT_REMOVE_RETURNS_VOID) /* Linux v6.11 */
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static inline void t194_nvcsi_remove_wrapper(struct platform_device *pdev)
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{
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t194_nvcsi_remove(pdev);
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}
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#else
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static inline int t194_nvcsi_remove_wrapper(struct platform_device *pdev)
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{
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return t194_nvcsi_remove(pdev);
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}
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#endif
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static struct platform_driver t194_nvcsi_driver = {
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.probe = t194_nvcsi_probe,
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.remove = __exit_p(t194_nvcsi_remove_wrapper),
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.driver = {
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.owner = THIS_MODULE,
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.name = "t194-nvcsi",
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#ifdef CONFIG_OF
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.of_match_table = tegra194_nvcsi_of_match,
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#endif
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#ifdef CONFIG_PM
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.pm = &nvhost_module_pm_ops,
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#endif
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},
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};
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module_platform_driver(t194_nvcsi_driver);
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MODULE_LICENSE("GPL");
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