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135 lines
3.0 KiB
C
135 lines
3.0 KiB
C
/*
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* Broadcom PCIe 1570 webcam driver
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*
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* Copyright (C) 2014 Patrik Jakobsson (patrik.r.jakobsson@gmail.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation.
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*
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*/
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#ifndef _BCWC_PCIE_H
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#define _PCWC_PCIE_H
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <linux/mutex.h>
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#include <media/videobuf2-dma-sg.h>
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#include <media/v4l2-device.h>
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#include "bcwc_reg.h"
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#include "bcwc_ringbuf.h"
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#include "bcwc_buffer.h"
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#include "bcwc_v4l2.h"
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#define BCWC_PCI_S2_IO 0
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#define BCWC_PCI_S2_MEM 2
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#define BCWC_PCI_ISP_IO 4
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#define MAX(a, b) ((a)>(b)?(a):(b))
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#define BCWC_BUFFERS 4
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struct bcwc_reg {
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u32 offset;
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u32 value;
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};
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enum FW_CHAN_TYPE {
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FW_CHAN_TYPE_OUT=0,
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FW_CHAN_TYPE_IN=1,
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FW_CHAN_TYPE_UNI_IN=2,
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};
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struct fw_channel {
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u32 offset;
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u32 size;
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u32 source;
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u32 type;
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struct bcwc_ringbuf ringbuf;
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char *name;
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};
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struct bcwc_private {
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struct pci_dev *pdev;
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unsigned int dma_mask;
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struct v4l2_device v4l2_dev;
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struct video_device *videodev;
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struct mutex ioctl_lock;
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int users;
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/* lock for synchronizing with irq/workqueue */
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spinlock_t io_lock;
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/* lock for ringbuffer synchronization */
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spinlock_t rb_lock;
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/* waitqueue for signaling command completion */
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wait_queue_head_t wq;
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/* Mapped PCI resources */
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void *s2_io;
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u32 s2_io_len;
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void *s2_mem;
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u32 s2_mem_len;
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void *isp_io;
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u32 isp_io_len;
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struct work_struct irq_work;
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/* Hardware info */
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u32 core_clk;
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u32 ddr_model;
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u32 ddr_speed;
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u32 vdl_step_size;
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/* DDR_PHY saved registers. Offsets need to be initialized somewhere */
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u32 ddr_phy_num_regs;
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struct bcwc_reg ddr_phy_reg_map[DDR_PHY_NUM_REGS];
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/* Root resource for memory management */
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struct resource *mem;
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/* Resource for managing IO mmu slots */
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struct resource *iommu;
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/* ISP memory objects */
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struct isp_mem_obj *firmware;
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struct isp_mem_obj *set_file;
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struct isp_mem_obj *ipc_queue;
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struct isp_mem_obj *heap;
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/* Firmware channels */
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int num_channels;
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struct fw_channel **channels;
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struct fw_channel *channel_terminal;
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struct fw_channel *channel_io;
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struct fw_channel *channel_debug;
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struct fw_channel *channel_buf_h2t;
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struct fw_channel *channel_buf_t2h;
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struct fw_channel *channel_shared_malloc;
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struct fw_channel *channel_io_t2h;
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/* camera config */
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int sensor_count;
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const struct bcwc_fmt *fmt;
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struct vb2_queue vb2_queue;
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struct mutex vb2_queue_lock;
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struct list_head buffer_queue;
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struct vb2_alloc_ctx *alloc_ctx;
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struct h2t_buf_ctx h2t_bufs[BCWC_BUFFERS];
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};
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#endif
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