+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2006-2010 by Marin Mitov *
- * mitov@issp.bas.bg *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
-
-#include <linux/module.h>
-#include <linux/version.h>
-#include <linux/stringify.h>
-#include <linux/delay.h>
-#include <linux/kthread.h>
-#include <linux/slab.h>
-#include <media/v4l2-dev.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-common.h>
-#include <media/videobuf2-dma-contig.h>
-
-#include "dt3155v4l.h"
-
-#define DT3155_DEVICE_ID 0x1223
-
-/* DT3155_CHUNK_SIZE is 4M (2^22) 8 full size buffers */
-#define DT3155_CHUNK_SIZE (1U << 22)
-
-#define DT3155_COH_FLAGS (GFP_KERNEL | GFP_DMA32 | __GFP_COLD | __GFP_NOWARN)
-
-#define DT3155_BUF_SIZE (768 * 576)
-
-#ifdef CONFIG_DT3155_STREAMING
-#define DT3155_CAPTURE_METHOD V4L2_CAP_STREAMING
-#else
-#define DT3155_CAPTURE_METHOD V4L2_CAP_READWRITE
-#endif
-
-/* global initializers (for all boards) */
-#ifdef CONFIG_DT3155_CCIR
-static const u8 csr2_init = VT_50HZ;
-#define DT3155_CURRENT_NORM V4L2_STD_625_50
-static const unsigned int img_width = 768;
-static const unsigned int img_height = 576;
-static const unsigned int frames_per_sec = 25;
-static const struct v4l2_fmtdesc frame_std[] = {
- {
- .index = 0,
- .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
- .flags = 0,
- .description = "CCIR/50Hz 8 bits gray",
- .pixelformat = V4L2_PIX_FMT_GREY,
- },
-};
-#else
-static const u8 csr2_init = VT_60HZ;
-#define DT3155_CURRENT_NORM V4L2_STD_525_60
-static const unsigned int img_width = 640;
-static const unsigned int img_height = 480;
-static const unsigned int frames_per_sec = 30;
-static const struct v4l2_fmtdesc frame_std[] = {
- {
- .index = 0,
- .type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
- .flags = 0,
- .description = "RS-170/60Hz 8 bits gray",
- .pixelformat = V4L2_PIX_FMT_GREY,
- },
-};
-#endif
-
-#define NUM_OF_FORMATS ARRAY_SIZE(frame_std)
-
-static u8 config_init = ACQ_MODE_EVEN;
-
-/**
- * read_i2c_reg - reads an internal i2c register
- *
- * @addr: dt3155 mmio base address
- * @index: index (internal address) of register to read
- * @data: pointer to byte the read data will be placed in
- *
- * returns: zero on success or error code
- *
- * This function starts reading the specified (by index) register
- * and busy waits for the process to finish. The result is placed
- * in a byte pointed by data.
- */
-static int
-read_i2c_reg(void __iomem *addr, u8 index, u8 *data)
-{
- u32 tmp = index;
-
- iowrite32((tmp<<17) | IIC_READ, addr + IIC_CSR2);
- mmiowb();
- udelay(45); /* wait at least 43 usec for NEW_CYCLE to clear */
- if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
- return -EIO; /* error: NEW_CYCLE not cleared */
- tmp = ioread32(addr + IIC_CSR1);
- if (tmp & DIRECT_ABORT) {
- /* reset DIRECT_ABORT bit */
- iowrite32(DIRECT_ABORT, addr + IIC_CSR1);
- return -EIO; /* error: DIRECT_ABORT set */
- }
- *data = tmp>>24;
- return 0;
-}
-
-/**
- * write_i2c_reg - writes to an internal i2c register
- *
- * @addr: dt3155 mmio base address
- * @index: index (internal address) of register to read
- * @data: data to be written
- *
- * returns: zero on success or error code
- *
- * This function starts writting the specified (by index) register
- * and busy waits for the process to finish.
- */
-static int
-write_i2c_reg(void __iomem *addr, u8 index, u8 data)
-{
- u32 tmp = index;
-
- iowrite32((tmp<<17) | IIC_WRITE | data, addr + IIC_CSR2);
- mmiowb();
- udelay(65); /* wait at least 63 usec for NEW_CYCLE to clear */
- if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
- return -EIO; /* error: NEW_CYCLE not cleared */
- if (ioread32(addr + IIC_CSR1) & DIRECT_ABORT) {
- /* reset DIRECT_ABORT bit */
- iowrite32(DIRECT_ABORT, addr + IIC_CSR1);
- return -EIO; /* error: DIRECT_ABORT set */
- }
- return 0;
-}
-
-/**
- * write_i2c_reg_nowait - writes to an internal i2c register
- *
- * @addr: dt3155 mmio base address
- * @index: index (internal address) of register to read
- * @data: data to be written
- *
- * This function starts writting the specified (by index) register
- * and then returns.
- */
-static void write_i2c_reg_nowait(void __iomem *addr, u8 index, u8 data)
-{
- u32 tmp = index;
-
- iowrite32((tmp<<17) | IIC_WRITE | data, addr + IIC_CSR2);
- mmiowb();
-}
-
-/**
- * wait_i2c_reg - waits the read/write to finish
- *
- * @addr: dt3155 mmio base address
- *
- * returns: zero on success or error code
- *
- * This function waits reading/writting to finish.
- */
-static int wait_i2c_reg(void __iomem *addr)
-{
- if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
- udelay(65); /* wait at least 63 usec for NEW_CYCLE to clear */
- if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
- return -EIO; /* error: NEW_CYCLE not cleared */
- if (ioread32(addr + IIC_CSR1) & DIRECT_ABORT) {
- /* reset DIRECT_ABORT bit */
- iowrite32(DIRECT_ABORT, addr + IIC_CSR1);
- return -EIO; /* error: DIRECT_ABORT set */
- }
- return 0;
-}
-
-static int
-dt3155_start_acq(struct dt3155_priv *pd)
-{
- struct vb2_buffer *vb = pd->curr_buf;
- dma_addr_t dma_addr;
-
- dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
- iowrite32(dma_addr, pd->regs + EVEN_DMA_START);
- iowrite32(dma_addr + img_width, pd->regs + ODD_DMA_START);
- iowrite32(img_width, pd->regs + EVEN_DMA_STRIDE);
- iowrite32(img_width, pd->regs + ODD_DMA_STRIDE);
- /* enable interrupts, clear all irq flags */
- iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START |
- FLD_END_EVEN | FLD_END_ODD, pd->regs + INT_CSR);
- iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN |
- FLD_DN_ODD | FLD_DN_EVEN | CAP_CONT_EVEN | CAP_CONT_ODD,
- pd->regs + CSR1);
- wait_i2c_reg(pd->regs);
- write_i2c_reg(pd->regs, CONFIG, pd->config);
- write_i2c_reg(pd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE);
- write_i2c_reg(pd->regs, ODD_CSR, CSR_ERROR | CSR_DONE);
-
- /* start the board */
- write_i2c_reg(pd->regs, CSR2, pd->csr2 | BUSY_EVEN | BUSY_ODD);
- return 0; /* success */
-}
-
-/*
- * driver-specific callbacks (vb2_ops)
- */
-static int
-dt3155_queue_setup(struct vb2_queue *q, const struct v4l2_format *fmt,
- unsigned int *num_buffers, unsigned int *num_planes,
- unsigned int sizes[], void *alloc_ctxs[])
-
-{
- struct dt3155_priv *pd = vb2_get_drv_priv(q);
- void *ret;
-
- if (*num_buffers == 0)
- *num_buffers = 1;
- *num_planes = 1;
- sizes[0] = img_width * img_height;
- if (pd->q->alloc_ctx[0])
- return 0;
- ret = vb2_dma_contig_init_ctx(&pd->pdev->dev);
- if (IS_ERR(ret))
- return PTR_ERR(ret);
- pd->q->alloc_ctx[0] = ret;
- return 0;
-}
-
-static void
-dt3155_wait_prepare(struct vb2_queue *q)
-{
- struct dt3155_priv *pd = vb2_get_drv_priv(q);
-
- mutex_unlock(pd->vdev.lock);
-}
-
-static void
-dt3155_wait_finish(struct vb2_queue *q)
-{
- struct dt3155_priv *pd = vb2_get_drv_priv(q);
-
- mutex_lock(pd->vdev.lock);
-}
-
-static int
-dt3155_buf_prepare(struct vb2_buffer *vb)
-{
- vb2_set_plane_payload(vb, 0, img_width * img_height);
- return 0;
-}
-
-static void
-dt3155_stop_streaming(struct vb2_queue *q)
-{
- struct dt3155_priv *pd = vb2_get_drv_priv(q);
- struct vb2_buffer *vb;
-
- spin_lock_irq(&pd->lock);
- while (!list_empty(&pd->dmaq)) {
- vb = list_first_entry(&pd->dmaq, typeof(*vb), done_entry);
- list_del(&vb->done_entry);
- vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
- }
- spin_unlock_irq(&pd->lock);
- msleep(45); /* irq hendler will stop the hardware */
-}
-
-static void
-dt3155_buf_queue(struct vb2_buffer *vb)
-{
- struct dt3155_priv *pd = vb2_get_drv_priv(vb->vb2_queue);
-
- /* pd->q->streaming = 1 when dt3155_buf_queue() is invoked */
- spin_lock_irq(&pd->lock);
- if (pd->curr_buf)
- list_add_tail(&vb->done_entry, &pd->dmaq);
- else {
- pd->curr_buf = vb;
- dt3155_start_acq(pd);
- }
- spin_unlock_irq(&pd->lock);
-}
-/*
- * end driver-specific callbacks
- */
-
-static const struct vb2_ops q_ops = {
- .queue_setup = dt3155_queue_setup,
- .wait_prepare = dt3155_wait_prepare,
- .wait_finish = dt3155_wait_finish,
- .buf_prepare = dt3155_buf_prepare,
- .stop_streaming = dt3155_stop_streaming,
- .buf_queue = dt3155_buf_queue,
-};
-
-static irqreturn_t
-dt3155_irq_handler_even(int irq, void *dev_id)
-{
- struct dt3155_priv *ipd = dev_id;
- struct vb2_buffer *ivb;
- dma_addr_t dma_addr;
- u32 tmp;
-
- tmp = ioread32(ipd->regs + INT_CSR) & (FLD_START | FLD_END_ODD);
- if (!tmp)
- return IRQ_NONE; /* not our irq */
- if ((tmp & FLD_START) && !(tmp & FLD_END_ODD)) {
- iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START,
- ipd->regs + INT_CSR);
- ipd->field_count++;
- return IRQ_HANDLED; /* start of field irq */
- }
- if ((tmp & FLD_START) && (tmp & FLD_END_ODD))
- ipd->stats.start_before_end++;
- /* check for corrupted fields */
-/* write_i2c_reg(ipd->regs, EVEN_CSR, CSR_ERROR | CSR_DONE); */
-/* write_i2c_reg(ipd->regs, ODD_CSR, CSR_ERROR | CSR_DONE); */
- tmp = ioread32(ipd->regs + CSR1) & (FLD_CRPT_EVEN | FLD_CRPT_ODD);
- if (tmp) {
- ipd->stats.corrupted_fields++;
- iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN |
- FLD_DN_ODD | FLD_DN_EVEN |
- CAP_CONT_EVEN | CAP_CONT_ODD,
- ipd->regs + CSR1);
- mmiowb();
- }
-
- spin_lock(&ipd->lock);
- if (ipd->curr_buf) {
- v4l2_get_timestamp(&ipd->curr_buf->v4l2_buf.timestamp);
- ipd->curr_buf->v4l2_buf.sequence = (ipd->field_count) >> 1;
- vb2_buffer_done(ipd->curr_buf, VB2_BUF_STATE_DONE);
- }
-
- if (!ipd->q->streaming || list_empty(&ipd->dmaq))
- goto stop_dma;
- ivb = list_first_entry(&ipd->dmaq, typeof(*ivb), done_entry);
- list_del(&ivb->done_entry);
- ipd->curr_buf = ivb;
- dma_addr = vb2_dma_contig_plane_dma_addr(ivb, 0);
- iowrite32(dma_addr, ipd->regs + EVEN_DMA_START);
- iowrite32(dma_addr + img_width, ipd->regs + ODD_DMA_START);
- iowrite32(img_width, ipd->regs + EVEN_DMA_STRIDE);
- iowrite32(img_width, ipd->regs + ODD_DMA_STRIDE);
- mmiowb();
- /* enable interrupts, clear all irq flags */
- iowrite32(FLD_START_EN | FLD_END_ODD_EN | FLD_START |
- FLD_END_EVEN | FLD_END_ODD, ipd->regs + INT_CSR);
- spin_unlock(&ipd->lock);
- return IRQ_HANDLED;
-
-stop_dma:
- ipd->curr_buf = NULL;
- /* stop the board */
- write_i2c_reg_nowait(ipd->regs, CSR2, ipd->csr2);
- iowrite32(FIFO_EN | SRST | FLD_CRPT_ODD | FLD_CRPT_EVEN |
- FLD_DN_ODD | FLD_DN_EVEN, ipd->regs + CSR1);
- /* disable interrupts, clear all irq flags */
- iowrite32(FLD_START | FLD_END_EVEN | FLD_END_ODD, ipd->regs + INT_CSR);
- spin_unlock(&ipd->lock);
- return IRQ_HANDLED;
-}
-
-static int
-dt3155_open(struct file *filp)
-{
- int ret = 0;
- struct dt3155_priv *pd = video_drvdata(filp);
-
- if (mutex_lock_interruptible(&pd->mux))
- return -ERESTARTSYS;
- if (!pd->users) {
- pd->q = kzalloc(sizeof(*pd->q), GFP_KERNEL);
- if (!pd->q) {
- ret = -ENOMEM;
- goto err_alloc_queue;
- }
- pd->q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- pd->q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- pd->q->io_modes = VB2_READ | VB2_MMAP;
- pd->q->ops = &q_ops;
- pd->q->mem_ops = &vb2_dma_contig_memops;
- pd->q->drv_priv = pd;
- pd->curr_buf = NULL;
- pd->field_count = 0;
- ret = vb2_queue_init(pd->q);
- if (ret < 0)
- goto err_request_irq;
- INIT_LIST_HEAD(&pd->dmaq);
- spin_lock_init(&pd->lock);
- /* disable all irqs, clear all irq flags */
- iowrite32(FLD_START | FLD_END_EVEN | FLD_END_ODD,
- pd->regs + INT_CSR);
- ret = request_irq(pd->pdev->irq, dt3155_irq_handler_even,
- IRQF_SHARED, DT3155_NAME, pd);
- if (ret)
- goto err_request_irq;
- }
- pd->users++;
- mutex_unlock(&pd->mux);
- return 0; /* success */
-err_request_irq:
- kfree(pd->q);
- pd->q = NULL;
-err_alloc_queue:
- mutex_unlock(&pd->mux);
- return ret;
-}
-
-static int
-dt3155_release(struct file *filp)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- mutex_lock(&pd->mux);
- pd->users--;
- BUG_ON(pd->users < 0);
- if (!pd->users) {
- vb2_queue_release(pd->q);
- free_irq(pd->pdev->irq, pd);
- if (pd->q->alloc_ctx[0])
- vb2_dma_contig_cleanup_ctx(pd->q->alloc_ctx[0]);
- kfree(pd->q);
- pd->q = NULL;
- }
- mutex_unlock(&pd->mux);
- return 0;
-}
-
-static ssize_t
-dt3155_read(struct file *filp, char __user *user, size_t size, loff_t *loff)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
- ssize_t res;
-
- if (mutex_lock_interruptible(&pd->mux))
- return -ERESTARTSYS;
- res = vb2_read(pd->q, user, size, loff, filp->f_flags & O_NONBLOCK);
- mutex_unlock(&pd->mux);
- return res;
-}
-
-static unsigned int
-dt3155_poll(struct file *filp, struct poll_table_struct *polltbl)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
- unsigned int res;
-
- mutex_lock(&pd->mux);
- res = vb2_poll(pd->q, filp, polltbl);
- mutex_unlock(&pd->mux);
- return res;
-}
-
-static int
-dt3155_mmap(struct file *filp, struct vm_area_struct *vma)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
- int res;
-
- if (mutex_lock_interruptible(&pd->mux))
- return -ERESTARTSYS;
- res = vb2_mmap(pd->q, vma);
- mutex_unlock(&pd->mux);
- return res;
-}
-
-static const struct v4l2_file_operations dt3155_fops = {
- .owner = THIS_MODULE,
- .open = dt3155_open,
- .release = dt3155_release,
- .read = dt3155_read,
- .poll = dt3155_poll,
- .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
- .mmap = dt3155_mmap,
-};
-
-static int
-dt3155_ioc_streamon(struct file *filp, void *p, enum v4l2_buf_type type)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_streamon(pd->q, type);
-}
-
-static int
-dt3155_ioc_streamoff(struct file *filp, void *p, enum v4l2_buf_type type)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_streamoff(pd->q, type);
-}
-
-static int
-dt3155_ioc_querycap(struct file *filp, void *p, struct v4l2_capability *cap)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- strcpy(cap->driver, DT3155_NAME);
- strcpy(cap->card, DT3155_NAME " frame grabber");
- sprintf(cap->bus_info, "PCI:%s", pci_name(pd->pdev));
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE |
- DT3155_CAPTURE_METHOD;
- cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
- return 0;
-}
-
-static int
-dt3155_ioc_enum_fmt_vid_cap(struct file *filp, void *p, struct v4l2_fmtdesc *f)
-{
- if (f->index >= NUM_OF_FORMATS)
- return -EINVAL;
- *f = frame_std[f->index];
- return 0;
-}
-
-static int
-dt3155_ioc_g_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
-{
- if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- f->fmt.pix.width = img_width;
- f->fmt.pix.height = img_height;
- f->fmt.pix.pixelformat = V4L2_PIX_FMT_GREY;
- f->fmt.pix.field = V4L2_FIELD_NONE;
- f->fmt.pix.bytesperline = f->fmt.pix.width;
- f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height;
- f->fmt.pix.colorspace = 0;
- f->fmt.pix.priv = 0;
- return 0;
-}
-
-static int
-dt3155_ioc_try_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
-{
- if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- if (f->fmt.pix.width == img_width &&
- f->fmt.pix.height == img_height &&
- f->fmt.pix.pixelformat == V4L2_PIX_FMT_GREY &&
- f->fmt.pix.field == V4L2_FIELD_NONE &&
- f->fmt.pix.bytesperline == f->fmt.pix.width &&
- f->fmt.pix.sizeimage == f->fmt.pix.width * f->fmt.pix.height)
- return 0;
- else
- return -EINVAL;
-}
-
-static int
-dt3155_ioc_s_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
-{
- return dt3155_ioc_g_fmt_vid_cap(filp, p, f);
-}
-
-static int
-dt3155_ioc_reqbufs(struct file *filp, void *p, struct v4l2_requestbuffers *b)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_reqbufs(pd->q, b);
-}
-
-static int
-dt3155_ioc_querybuf(struct file *filp, void *p, struct v4l2_buffer *b)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_querybuf(pd->q, b);
-}
-
-static int
-dt3155_ioc_qbuf(struct file *filp, void *p, struct v4l2_buffer *b)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_qbuf(pd->q, b);
-}
-
-static int
-dt3155_ioc_dqbuf(struct file *filp, void *p, struct v4l2_buffer *b)
-{
- struct dt3155_priv *pd = video_drvdata(filp);
-
- return vb2_dqbuf(pd->q, b, filp->f_flags & O_NONBLOCK);
-}
-
-static int
-dt3155_ioc_querystd(struct file *filp, void *p, v4l2_std_id *norm)
-{
- *norm = DT3155_CURRENT_NORM;
- return 0;
-}
-
-static int
-dt3155_ioc_g_std(struct file *filp, void *p, v4l2_std_id *norm)
-{
- *norm = DT3155_CURRENT_NORM;
- return 0;
-}
-
-static int
-dt3155_ioc_s_std(struct file *filp, void *p, v4l2_std_id norm)
-{
- if (norm & DT3155_CURRENT_NORM)
- return 0;
- return -EINVAL;
-}
-
-static int
-dt3155_ioc_enum_input(struct file *filp, void *p, struct v4l2_input *input)
-{
- if (input->index)
- return -EINVAL;
- strcpy(input->name, "Coax in");
- input->type = V4L2_INPUT_TYPE_CAMERA;
- /*
- * FIXME: input->std = 0 according to v4l2 API
- * VIDIOC_G_STD, VIDIOC_S_STD, VIDIOC_QUERYSTD and VIDIOC_ENUMSTD
- * should return -EINVAL
- */
- input->std = DT3155_CURRENT_NORM;
- input->status = 0;/* FIXME: add sync detection & V4L2_IN_ST_NO_H_LOCK */
- return 0;
-}
-
-static int
-dt3155_ioc_g_input(struct file *filp, void *p, unsigned int *i)
-{
- *i = 0;
- return 0;
-}
-
-static int
-dt3155_ioc_s_input(struct file *filp, void *p, unsigned int i)
-{
- if (i)
- return -EINVAL;
- return 0;
-}
-
-static int
-dt3155_ioc_g_parm(struct file *filp, void *p, struct v4l2_streamparm *parms)
-{
- if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- parms->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
- parms->parm.capture.capturemode = 0;
- parms->parm.capture.timeperframe.numerator = 1001;
- parms->parm.capture.timeperframe.denominator = frames_per_sec * 1000;
- parms->parm.capture.extendedmode = 0;
- parms->parm.capture.readbuffers = 1; /* FIXME: 2 buffers? */
- return 0;
-}
-
-static int
-dt3155_ioc_s_parm(struct file *filp, void *p, struct v4l2_streamparm *parms)
-{
- if (parms->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- parms->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
- parms->parm.capture.capturemode = 0;
- parms->parm.capture.timeperframe.numerator = 1001;
- parms->parm.capture.timeperframe.denominator = frames_per_sec * 1000;
- parms->parm.capture.extendedmode = 0;
- parms->parm.capture.readbuffers = 1; /* FIXME: 2 buffers? */
- return 0;
-}
-
-static const struct v4l2_ioctl_ops dt3155_ioctl_ops = {
- .vidioc_streamon = dt3155_ioc_streamon,
- .vidioc_streamoff = dt3155_ioc_streamoff,
- .vidioc_querycap = dt3155_ioc_querycap,
-/*
- .vidioc_g_priority = dt3155_ioc_g_priority,
- .vidioc_s_priority = dt3155_ioc_s_priority,
-*/
- .vidioc_enum_fmt_vid_cap = dt3155_ioc_enum_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = dt3155_ioc_try_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = dt3155_ioc_g_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = dt3155_ioc_s_fmt_vid_cap,
- .vidioc_reqbufs = dt3155_ioc_reqbufs,
- .vidioc_querybuf = dt3155_ioc_querybuf,
- .vidioc_qbuf = dt3155_ioc_qbuf,
- .vidioc_dqbuf = dt3155_ioc_dqbuf,
- .vidioc_querystd = dt3155_ioc_querystd,
- .vidioc_g_std = dt3155_ioc_g_std,
- .vidioc_s_std = dt3155_ioc_s_std,
- .vidioc_enum_input = dt3155_ioc_enum_input,
- .vidioc_g_input = dt3155_ioc_g_input,
- .vidioc_s_input = dt3155_ioc_s_input,
-/*
- .vidioc_queryctrl = dt3155_ioc_queryctrl,
- .vidioc_g_ctrl = dt3155_ioc_g_ctrl,
- .vidioc_s_ctrl = dt3155_ioc_s_ctrl,
- .vidioc_querymenu = dt3155_ioc_querymenu,
- .vidioc_g_ext_ctrls = dt3155_ioc_g_ext_ctrls,
- .vidioc_s_ext_ctrls = dt3155_ioc_s_ext_ctrls,
-*/
- .vidioc_g_parm = dt3155_ioc_g_parm,
- .vidioc_s_parm = dt3155_ioc_s_parm,
-/*
- .vidioc_cropcap = dt3155_ioc_cropcap,
- .vidioc_g_crop = dt3155_ioc_g_crop,
- .vidioc_s_crop = dt3155_ioc_s_crop,
- .vidioc_enum_framesizes = dt3155_ioc_enum_framesizes,
- .vidioc_enum_frameintervals = dt3155_ioc_enum_frameintervals,
-*/
-};
-
-static int
-dt3155_init_board(struct pci_dev *pdev)
-{
- struct dt3155_priv *pd = pci_get_drvdata(pdev);
- void *buf_cpu;
- dma_addr_t buf_dma;
- int i;
- u8 tmp;
-
- pci_set_master(pdev); /* dt3155 needs it */
-
- /* resetting the adapter */
- iowrite32(FLD_CRPT_ODD | FLD_CRPT_EVEN | FLD_DN_ODD | FLD_DN_EVEN,
- pd->regs + CSR1);
- mmiowb();
- msleep(20);
-
- /* initializing adaper registers */
- iowrite32(FIFO_EN | SRST, pd->regs + CSR1);
- mmiowb();
- iowrite32(0xEEEEEE01, pd->regs + EVEN_PIXEL_FMT);
- iowrite32(0xEEEEEE01, pd->regs + ODD_PIXEL_FMT);
- iowrite32(0x00000020, pd->regs + FIFO_TRIGER);
- iowrite32(0x00000103, pd->regs + XFER_MODE);
- iowrite32(0, pd->regs + RETRY_WAIT_CNT);
- iowrite32(0, pd->regs + INT_CSR);
- iowrite32(1, pd->regs + EVEN_FLD_MASK);
- iowrite32(1, pd->regs + ODD_FLD_MASK);
- iowrite32(0, pd->regs + MASK_LENGTH);
- iowrite32(0x0005007C, pd->regs + FIFO_FLAG_CNT);
- iowrite32(0x01010101, pd->regs + IIC_CLK_DUR);
- mmiowb();
-
- /* verifying that we have a DT3155 board (not just a SAA7116 chip) */
- read_i2c_reg(pd->regs, DT_ID, &tmp);
- if (tmp != DT3155_ID)
- return -ENODEV;
-
- /* initialize AD LUT */
- write_i2c_reg(pd->regs, AD_ADDR, 0);
- for (i = 0; i < 256; i++)
- write_i2c_reg(pd->regs, AD_LUT, i);
-
- /* initialize ADC references */
- /* FIXME: pos_ref & neg_ref depend on VT_50HZ */
- write_i2c_reg(pd->regs, AD_ADDR, AD_CMD_REG);
- write_i2c_reg(pd->regs, AD_CMD, VIDEO_CNL_1 | SYNC_CNL_1 | SYNC_LVL_3);
- write_i2c_reg(pd->regs, AD_ADDR, AD_POS_REF);
- write_i2c_reg(pd->regs, AD_CMD, 34);
- write_i2c_reg(pd->regs, AD_ADDR, AD_NEG_REF);
- write_i2c_reg(pd->regs, AD_CMD, 0);
-
- /* initialize PM LUT */
- write_i2c_reg(pd->regs, CONFIG, pd->config | PM_LUT_PGM);
- for (i = 0; i < 256; i++) {
- write_i2c_reg(pd->regs, PM_LUT_ADDR, i);
- write_i2c_reg(pd->regs, PM_LUT_DATA, i);
- }
- write_i2c_reg(pd->regs, CONFIG, pd->config | PM_LUT_PGM | PM_LUT_SEL);
- for (i = 0; i < 256; i++) {
- write_i2c_reg(pd->regs, PM_LUT_ADDR, i);
- write_i2c_reg(pd->regs, PM_LUT_DATA, i);
- }
- write_i2c_reg(pd->regs, CONFIG, pd->config); /* ACQ_MODE_EVEN */
-
- /* select channel 1 for input and set sync level */
- write_i2c_reg(pd->regs, AD_ADDR, AD_CMD_REG);
- write_i2c_reg(pd->regs, AD_CMD, VIDEO_CNL_1 | SYNC_CNL_1 | SYNC_LVL_3);
-
- /* allocate memory, and initialize the DMA machine */
- buf_cpu = dma_alloc_coherent(&pdev->dev, DT3155_BUF_SIZE, &buf_dma,
- GFP_KERNEL);
- if (!buf_cpu)
- return -ENOMEM;
- iowrite32(buf_dma, pd->regs + EVEN_DMA_START);
- iowrite32(buf_dma, pd->regs + ODD_DMA_START);
- iowrite32(0, pd->regs + EVEN_DMA_STRIDE);
- iowrite32(0, pd->regs + ODD_DMA_STRIDE);
-
- /* Perform a pseudo even field acquire */
- iowrite32(FIFO_EN | SRST | CAP_CONT_ODD, pd->regs + CSR1);
- write_i2c_reg(pd->regs, CSR2, pd->csr2 | SYNC_SNTL);
- write_i2c_reg(pd->regs, CONFIG, pd->config);
- write_i2c_reg(pd->regs, EVEN_CSR, CSR_SNGL);
- write_i2c_reg(pd->regs, CSR2, pd->csr2 | BUSY_EVEN | SYNC_SNTL);
- msleep(100);
- read_i2c_reg(pd->regs, CSR2, &tmp);
- write_i2c_reg(pd->regs, EVEN_CSR, CSR_ERROR | CSR_SNGL | CSR_DONE);
- write_i2c_reg(pd->regs, ODD_CSR, CSR_ERROR | CSR_SNGL | CSR_DONE);
- write_i2c_reg(pd->regs, CSR2, pd->csr2);
- iowrite32(FIFO_EN | SRST | FLD_DN_EVEN | FLD_DN_ODD, pd->regs + CSR1);
-
- /* deallocate memory */
- dma_free_coherent(&pdev->dev, DT3155_BUF_SIZE, buf_cpu, buf_dma);
- if (tmp & BUSY_EVEN)
- return -EIO;
- return 0;
-}
-
-static struct video_device dt3155_vdev = {
- .name = DT3155_NAME,
- .fops = &dt3155_fops,
- .ioctl_ops = &dt3155_ioctl_ops,
- .minor = -1,
- .release = video_device_release_empty,
- .tvnorms = DT3155_CURRENT_NORM,
-};
-
-/* same as in drivers/base/dma-coherent.c */
-struct dma_coherent_mem {
- void *virt_base;
- dma_addr_t device_base;
- int size;
- int flags;
- unsigned long *bitmap;
-};
-
-static int
-dt3155_alloc_coherent(struct device *dev, size_t size, int flags)
-{
- struct dma_coherent_mem *mem;
- dma_addr_t dev_base;
- int pages = size >> PAGE_SHIFT;
- int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long);
-
- if ((flags & DMA_MEMORY_MAP) == 0)
- goto out;
- if (!size)
- goto out;
- if (dev->dma_mem)
- goto out;
-
- mem = kzalloc(sizeof(*mem), GFP_KERNEL);
- if (!mem)
- goto out;
- mem->virt_base = dma_alloc_coherent(dev, size, &dev_base,
- DT3155_COH_FLAGS);
- if (!mem->virt_base)
- goto err_alloc_coherent;
- mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL);
- if (!mem->bitmap)
- goto err_bitmap;
-
- /* coherent_dma_mask is already set to 32 bits */
- mem->device_base = dev_base;
- mem->size = pages;
- mem->flags = flags;
- dev->dma_mem = mem;
- return DMA_MEMORY_MAP;
-
-err_bitmap:
- dma_free_coherent(dev, size, mem->virt_base, dev_base);
-err_alloc_coherent:
- kfree(mem);
-out:
- return 0;
-}
-
-static void
-dt3155_free_coherent(struct device *dev)
-{
- struct dma_coherent_mem *mem = dev->dma_mem;
-
- if (!mem)
- return;
- dev->dma_mem = NULL;
- dma_free_coherent(dev, mem->size << PAGE_SHIFT,
- mem->virt_base, mem->device_base);
- kfree(mem->bitmap);
- kfree(mem);
-}
-
-static int
-dt3155_probe(struct pci_dev *pdev, const struct pci_device_id *id)
-{
- int err;
- struct dt3155_priv *pd;
-
- err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
- if (err)
- return -ENODEV;
- pd = devm_kzalloc(&pdev->dev, sizeof(*pd), GFP_KERNEL);
- if (!pd)
- return -ENOMEM;
-
- pd->vdev = dt3155_vdev;
- pci_set_drvdata(pdev, pd); /* for use in dt3155_remove() */
- video_set_drvdata(&pd->vdev, pd); /* for use in video_fops */
- pd->users = 0;
- pd->pdev = pdev;
- INIT_LIST_HEAD(&pd->dmaq);
- mutex_init(&pd->mux);
- pd->vdev.lock = &pd->mux; /* for locking v4l2_file_operations */
- spin_lock_init(&pd->lock);
- pd->csr2 = csr2_init;
- pd->config = config_init;
- err = pci_enable_device(pdev);
- if (err)
- return err;
- err = pci_request_region(pdev, 0, pci_name(pdev));
- if (err)
- goto err_req_region;
- pd->regs = pci_iomap(pdev, 0, pci_resource_len(pd->pdev, 0));
- if (!pd->regs) {
- err = -ENOMEM;
- goto err_pci_iomap;
- }
- err = dt3155_init_board(pdev);
- if (err)
- goto err_init_board;
- err = video_register_device(&pd->vdev, VFL_TYPE_GRABBER, -1);
- if (err)
- goto err_init_board;
- if (dt3155_alloc_coherent(&pdev->dev, DT3155_CHUNK_SIZE,
- DMA_MEMORY_MAP))
- dev_info(&pdev->dev, "preallocated 8 buffers\n");
- dev_info(&pdev->dev, "/dev/video%i is ready\n", pd->vdev.minor);
- return 0; /* success */
-
-err_init_board:
- pci_iounmap(pdev, pd->regs);
-err_pci_iomap:
- pci_release_region(pdev, 0);
-err_req_region:
- pci_disable_device(pdev);
- return err;
-}
-
-static void
-dt3155_remove(struct pci_dev *pdev)
-{
- struct dt3155_priv *pd = pci_get_drvdata(pdev);
-
- dt3155_free_coherent(&pdev->dev);
- video_unregister_device(&pd->vdev);
- pci_iounmap(pdev, pd->regs);
- pci_release_region(pdev, 0);
- pci_disable_device(pdev);
-}
-
-static const struct pci_device_id pci_ids[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, DT3155_DEVICE_ID) },
- { 0, /* zero marks the end */ },
-};
-MODULE_DEVICE_TABLE(pci, pci_ids);
-
-static struct pci_driver pci_driver = {
- .name = DT3155_NAME,
- .id_table = pci_ids,
- .probe = dt3155_probe,
- .remove = dt3155_remove,
-};
-
-module_pci_driver(pci_driver);
-
-MODULE_DESCRIPTION("video4linux pci-driver for dt3155 frame grabber");
-MODULE_AUTHOR("Marin Mitov <mitov@issp.bas.bg>");
-MODULE_VERSION(DT3155_VERSION);
-MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff