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92ac7bc35a
Port camera drivers below from /kenrel/nvidia to /kernel/nvidia-oot as OOT modules: - Fusa-capture driver - Tegra V4L2 framework driver - vi/csi driver - tegra camera platform driver Change-Id: I390af27096425bb11e0934201dd1a90f001bb3fa Signed-off-by: Frank Chen <frankc@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2780698 Reviewed-by: FNU Raunak <fraunak@nvidia.com> Reviewed-by: Ankur Pawar <ankurp@nvidia.com> Reviewed-by: Shiva Dubey <sdubey@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2017-2022 NVIDIA Corporation. All rights reserved.
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*/
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/**
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* @file include/media/fusa-capture/capture-isp-channel.h
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*
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* @brief ISP channel character device driver header for the T186/T194 Camera
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* RTCPU platform.
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*/
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#ifndef __FUSA_CAPTURE_ISP_CHANNEL_H__
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#define __FUSA_CAPTURE_ISP_CHANNEL_H__
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#include <linux/of_platform.h>
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struct isp_channel_drv;
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/**
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* @brief ISP fops for Host1x syncpt/gos allocations
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*
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* This fops is a HAL for chip/IP generations, see the respective VI platform
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* drivers for the implementations.
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*/
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struct isp_channel_drv_ops {
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/**
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* @brief Request a syncpt allocation from Host1x.
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*
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* @param[in] pdev ISP platform_device
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* @param[in] name syncpt name
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* @param[out] syncpt_id assigned syncpt id
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*
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* @returns 0 (success), neg. errno (failure)
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*/
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int (*alloc_syncpt)(
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struct platform_device *pdev,
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const char *name,
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uint32_t *syncpt_id);
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/**
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* @brief Release a syncpt to Host1x.
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*
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* @param[in] pdev ISP platform_device
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* @param[in] id syncpt id to free
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*/
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void (*release_syncpt)(
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struct platform_device *pdev,
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uint32_t id);
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/**
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* @brief Retrieve the GoS table allocated in the ISP-THI carveout.
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*
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* @param[in] pdev ISP platform_device
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* @param[out] table GoS table pointer
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*/
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uint32_t (*get_gos_table)(
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struct platform_device *pdev,
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const dma_addr_t **table);
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/**
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* @brief Get a syncpt's GoS backing in the ISP-THI carveout.
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*
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* @param[in] pdev ISP platform_device
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* @param[in] id syncpt id
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* @param[out] gos_index GoS id
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* @param[out] gos_offset Offset of syncpt within GoS [dword]
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*
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* @returns 0 (success), neg. errno (failure)
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*/
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int (*get_syncpt_gos_backing)(
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struct platform_device *pdev,
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uint32_t id,
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dma_addr_t *syncpt_addr,
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uint32_t *gos_index,
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uint32_t *gos_offset);
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};
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/**
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* @brief ISP channel context (character device).
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*/
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struct tegra_isp_channel {
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struct device *isp_dev; /**< ISP device */
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struct platform_device *ndev; /**< ISP platform_device */
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struct isp_channel_drv *drv; /**< ISP channel driver context */
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void *priv; /**< ISP channel private context */
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struct isp_capture *capture_data; /**< ISP channel capture context */
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const struct isp_channel_drv_ops *ops; /**< ISP syncpt/gos fops */
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};
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/**
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* @brief Create the ISP channels driver contexts, and instantiate
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* MAX_ISP_CHANNELS many channel character device nodes.
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*
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* ISP channel nodes appear in the filesystem as:
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* /dev/capture-isp-channel{0..MAX_ISP_CHANNELS-1}
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*
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* @param[in] ndev ISP platform_device context
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* @param[in] ops isp_channel_drv_ops fops
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*
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* @returns 0 (success), neg. errno (failure)
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*/
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int isp_channel_drv_register(
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struct platform_device *pdev,
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const struct isp_channel_drv_ops *ops);
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/**
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* @brief Destroy the ISP channels driver and all character device nodes.
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*
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* The ISP channels driver and associated channel contexts in memory are freed,
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* rendering the ISP platform driver unusable until re-initialized.
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*
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* @param[in] dev ISP device context
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*/
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void isp_channel_drv_unregister(
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struct device *dev);
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int isp_channel_drv_init(void);
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void isp_channel_drv_exit(void);
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#endif /* __FUSA_CAPTURE_ISP_CHANNEL_H__ */
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