mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-16 00:34:20 +08:00
[media] cx25821: replace custom ioctls with write()
Ideally this should be implemented with vb2, but it'll do for now. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
7087d31b0c
commit
ea3f7ac6e9
@ -775,8 +775,8 @@ void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel_select,
|
||||
if (channel_select <= 7 && channel_select >= 0) {
|
||||
cx_write(dev->channels[channel_select].sram_channels->pix_frmt,
|
||||
format);
|
||||
dev->channels[channel_select].pixel_formats = format;
|
||||
}
|
||||
dev->channels[channel_select].pixel_formats = format;
|
||||
}
|
||||
|
||||
static void cx25821_set_vip_mode(struct cx25821_dev *dev,
|
||||
@ -820,6 +820,7 @@ static void cx25821_initialize(struct cx25821_dev *dev)
|
||||
/* Probably only affect Downstream */
|
||||
for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
|
||||
i <= VID_UPSTREAM_SRAM_CHANNEL_J; i++) {
|
||||
dev->channels[i].pixel_formats = PIXEL_FRMT_422;
|
||||
cx25821_set_vip_mode(dev, dev->channels[i].sram_channels);
|
||||
}
|
||||
|
||||
|
||||
@ -25,16 +25,11 @@
|
||||
#include "cx25821-video.h"
|
||||
#include "cx25821-video-upstream.h"
|
||||
|
||||
#include <linux/fs.h>
|
||||
#include <linux/errno.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/syscalls.h>
|
||||
#include <linux/file.h>
|
||||
#include <linux/fcntl.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/uaccess.h>
|
||||
|
||||
MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards");
|
||||
MODULE_AUTHOR("Hiep Huynh <hiep.huynh@conexant.com>");
|
||||
@ -258,6 +253,10 @@ void cx25821_stop_upstream_video(struct cx25821_channel *chan)
|
||||
pr_info("No video file is currently running so return!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
/* Set the interrupt mask register, disable irq. */
|
||||
cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) & ~(1 << sram_ch->irq_bit));
|
||||
|
||||
/* Disable RISC interrupts */
|
||||
tmp = cx_read(sram_ch->int_msk);
|
||||
cx_write(sram_ch->int_msk, tmp & ~_intr_msk);
|
||||
@ -266,6 +265,8 @@ void cx25821_stop_upstream_video(struct cx25821_channel *chan)
|
||||
tmp = cx_read(sram_ch->dma_ctl);
|
||||
cx_write(sram_ch->dma_ctl, tmp & ~(FLD_VID_FIFO_EN | FLD_VID_RISC_EN));
|
||||
|
||||
free_irq(dev->pci->irq, chan);
|
||||
|
||||
/* Clear data buffer memory */
|
||||
if (out->_data_buf_virt_addr)
|
||||
memset(out->_data_buf_virt_addr, 0, out->_data_buf_size);
|
||||
@ -275,11 +276,6 @@ void cx25821_stop_upstream_video(struct cx25821_channel *chan)
|
||||
out->_frame_count = 0;
|
||||
out->_file_status = END_OF_FILE;
|
||||
|
||||
destroy_workqueue(out->_irq_queues);
|
||||
out->_irq_queues = NULL;
|
||||
|
||||
kfree(out->_filename);
|
||||
|
||||
tmp = cx_read(VID_CH_MODE_SEL);
|
||||
cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
|
||||
}
|
||||
@ -306,25 +302,15 @@ void cx25821_free_mem_upstream(struct cx25821_channel *chan)
|
||||
}
|
||||
}
|
||||
|
||||
static int cx25821_get_frame(struct cx25821_channel *chan,
|
||||
const struct sram_channel *sram_ch)
|
||||
int cx25821_write_frame(struct cx25821_channel *chan,
|
||||
const char __user *data, size_t count)
|
||||
{
|
||||
struct cx25821_video_out_data *out = chan->out;
|
||||
struct file *myfile;
|
||||
int frame_index_temp = out->_frame_index;
|
||||
int i = 0;
|
||||
int line_size = (out->_pixel_format == PIXEL_FRMT_411) ?
|
||||
Y411_LINE_SZ : Y422_LINE_SZ;
|
||||
int frame_size = 0;
|
||||
int frame_offset = 0;
|
||||
ssize_t vfs_read_retval = 0;
|
||||
char mybuf[line_size];
|
||||
loff_t file_offset;
|
||||
loff_t pos;
|
||||
mm_segment_t old_fs;
|
||||
|
||||
if (out->_file_status == END_OF_FILE)
|
||||
return 0;
|
||||
int curpos = out->curpos;
|
||||
|
||||
if (out->is_60hz)
|
||||
frame_size = (line_size == Y411_LINE_SZ) ?
|
||||
@ -333,160 +319,27 @@ static int cx25821_get_frame(struct cx25821_channel *chan,
|
||||
frame_size = (line_size == Y411_LINE_SZ) ?
|
||||
FRAME_SIZE_PAL_Y411 : FRAME_SIZE_PAL_Y422;
|
||||
|
||||
frame_offset = (frame_index_temp > 0) ? frame_size : 0;
|
||||
file_offset = out->_frame_count * frame_size;
|
||||
|
||||
myfile = filp_open(out->_filename, O_RDONLY | O_LARGEFILE, 0);
|
||||
|
||||
if (IS_ERR(myfile)) {
|
||||
const int open_errno = -PTR_ERR(myfile);
|
||||
pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
|
||||
__func__, out->_filename, open_errno);
|
||||
return PTR_ERR(myfile);
|
||||
} else {
|
||||
if (!(myfile->f_op)) {
|
||||
pr_err("%s(): File has no file operations registered!\n",
|
||||
__func__);
|
||||
filp_close(myfile, NULL);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
if (!myfile->f_op->read) {
|
||||
pr_err("%s(): File has no READ operations registered!\n",
|
||||
__func__);
|
||||
filp_close(myfile, NULL);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
pos = myfile->f_pos;
|
||||
old_fs = get_fs();
|
||||
set_fs(KERNEL_DS);
|
||||
|
||||
for (i = 0; i < out->_lines_count; i++) {
|
||||
pos = file_offset;
|
||||
|
||||
vfs_read_retval = vfs_read(myfile, mybuf, line_size,
|
||||
&pos);
|
||||
|
||||
if (vfs_read_retval > 0 && vfs_read_retval == line_size
|
||||
&& out->_data_buf_virt_addr != NULL) {
|
||||
memcpy((void *)(out->_data_buf_virt_addr +
|
||||
frame_offset / 4), mybuf,
|
||||
vfs_read_retval);
|
||||
}
|
||||
|
||||
file_offset += vfs_read_retval;
|
||||
frame_offset += vfs_read_retval;
|
||||
|
||||
if (vfs_read_retval < line_size) {
|
||||
pr_info("Done: exit %s() since no more bytes to read from Video file\n",
|
||||
__func__);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (i > 0)
|
||||
out->_frame_count++;
|
||||
|
||||
out->_file_status = (vfs_read_retval == line_size) ?
|
||||
IN_PROGRESS : END_OF_FILE;
|
||||
|
||||
set_fs(old_fs);
|
||||
filp_close(myfile, NULL);
|
||||
if (curpos == 0) {
|
||||
out->cur_frame_index = out->_frame_index;
|
||||
if (wait_event_interruptible(out->waitq, out->cur_frame_index != out->_frame_index))
|
||||
return -EINTR;
|
||||
out->cur_frame_index = out->_frame_index;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
frame_offset = out->cur_frame_index ? frame_size : 0;
|
||||
|
||||
static void cx25821_vidups_handler(struct work_struct *work)
|
||||
{
|
||||
struct cx25821_video_out_data *out =
|
||||
container_of(work, struct cx25821_video_out_data, _irq_work_entry);
|
||||
|
||||
cx25821_get_frame(out->chan, out->chan->sram_channels);
|
||||
}
|
||||
|
||||
static int cx25821_openfile(struct cx25821_channel *chan,
|
||||
const struct sram_channel *sram_ch)
|
||||
{
|
||||
struct cx25821_video_out_data *out = chan->out;
|
||||
struct file *myfile;
|
||||
int i = 0, j = 0;
|
||||
int line_size = (out->_pixel_format == PIXEL_FRMT_411) ?
|
||||
Y411_LINE_SZ : Y422_LINE_SZ;
|
||||
ssize_t vfs_read_retval = 0;
|
||||
char mybuf[line_size];
|
||||
loff_t pos;
|
||||
loff_t offset = (unsigned long)0;
|
||||
mm_segment_t old_fs;
|
||||
|
||||
myfile = filp_open(out->_filename, O_RDONLY | O_LARGEFILE, 0);
|
||||
|
||||
if (IS_ERR(myfile)) {
|
||||
const int open_errno = -PTR_ERR(myfile);
|
||||
pr_err("%s(): ERROR opening file(%s) with errno = %d!\n",
|
||||
__func__, out->_filename, open_errno);
|
||||
return PTR_ERR(myfile);
|
||||
} else {
|
||||
if (!(myfile->f_op)) {
|
||||
pr_err("%s(): File has no file operations registered!\n",
|
||||
__func__);
|
||||
filp_close(myfile, NULL);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
if (!myfile->f_op->read) {
|
||||
pr_err("%s(): File has no READ operations registered! Returning\n",
|
||||
__func__);
|
||||
filp_close(myfile, NULL);
|
||||
return -EIO;
|
||||
}
|
||||
|
||||
pos = myfile->f_pos;
|
||||
old_fs = get_fs();
|
||||
set_fs(KERNEL_DS);
|
||||
|
||||
for (j = 0; j < NUM_FRAMES; j++) {
|
||||
for (i = 0; i < out->_lines_count; i++) {
|
||||
pos = offset;
|
||||
|
||||
vfs_read_retval = vfs_read(myfile, mybuf,
|
||||
line_size, &pos);
|
||||
|
||||
if (vfs_read_retval > 0
|
||||
&& vfs_read_retval == line_size
|
||||
&& out->_data_buf_virt_addr != NULL) {
|
||||
memcpy((void *)(out->
|
||||
_data_buf_virt_addr +
|
||||
offset / 4), mybuf,
|
||||
vfs_read_retval);
|
||||
}
|
||||
|
||||
offset += vfs_read_retval;
|
||||
|
||||
if (vfs_read_retval < line_size) {
|
||||
pr_info("Done: exit %s() since no more bytes to read from Video file\n",
|
||||
__func__);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (i > 0)
|
||||
out->_frame_count++;
|
||||
|
||||
if (vfs_read_retval < line_size)
|
||||
break;
|
||||
}
|
||||
|
||||
out->_file_status = (vfs_read_retval == line_size) ?
|
||||
IN_PROGRESS : END_OF_FILE;
|
||||
|
||||
set_fs(old_fs);
|
||||
myfile->f_pos = 0;
|
||||
filp_close(myfile, NULL);
|
||||
if (frame_size - curpos < count)
|
||||
count = frame_size - curpos;
|
||||
memcpy((char *)out->_data_buf_virt_addr + frame_offset + curpos,
|
||||
data, count);
|
||||
curpos += count;
|
||||
if (curpos == frame_size) {
|
||||
out->_frame_count++;
|
||||
curpos = 0;
|
||||
}
|
||||
out->curpos = curpos;
|
||||
|
||||
return 0;
|
||||
return count;
|
||||
}
|
||||
|
||||
static int cx25821_upstream_buffer_prepare(struct cx25821_channel *chan,
|
||||
@ -536,10 +389,6 @@ static int cx25821_upstream_buffer_prepare(struct cx25821_channel *chan,
|
||||
/* Clear memory at address */
|
||||
memset(out->_data_buf_virt_addr, 0, out->_data_buf_size);
|
||||
|
||||
ret = cx25821_openfile(chan, sram_ch);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
/* Create RISC programs */
|
||||
ret = cx25821_risc_buffer_upstream(chan, dev->pci, 0, bpl,
|
||||
out->_lines_count);
|
||||
@ -576,12 +425,12 @@ static int cx25821_video_upstream_irq(struct cx25821_channel *chan, u32 status)
|
||||
cx_write(channel->int_msk, int_msk_tmp & ~_intr_msk);
|
||||
cx_write(channel->int_stat, _intr_msk);
|
||||
|
||||
wake_up(&out->waitq);
|
||||
|
||||
spin_lock(&dev->slock);
|
||||
|
||||
out->_frame_index = prog_cnt;
|
||||
|
||||
queue_work(out->_irq_queues, &out->_irq_work_entry);
|
||||
|
||||
if (out->_is_first_frame) {
|
||||
out->_is_first_frame = 0;
|
||||
|
||||
@ -762,7 +611,6 @@ int cx25821_vidupstream_init(struct cx25821_channel *chan,
|
||||
int err = 0;
|
||||
int data_frame_size = 0;
|
||||
int risc_buffer_size = 0;
|
||||
int str_length = 0;
|
||||
|
||||
if (out->_is_running) {
|
||||
pr_info("Video Channel is still running so return!\n");
|
||||
@ -771,13 +619,8 @@ int cx25821_vidupstream_init(struct cx25821_channel *chan,
|
||||
|
||||
sram_ch = chan->sram_channels;
|
||||
|
||||
INIT_WORK(&out->_irq_work_entry, cx25821_vidups_handler);
|
||||
out->_irq_queues = create_singlethread_workqueue("cx25821_workqueue");
|
||||
out->is_60hz = dev->tvnorm & V4L2_STD_525_60;
|
||||
|
||||
if (!out->_irq_queues) {
|
||||
pr_err("create_singlethread_workqueue() for Video FAILED!\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
/* 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for
|
||||
* channel A-C
|
||||
*/
|
||||
@ -795,39 +638,6 @@ int cx25821_vidupstream_init(struct cx25821_channel *chan,
|
||||
risc_buffer_size = out->is_60hz ?
|
||||
NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE;
|
||||
|
||||
if (out->input_filename) {
|
||||
str_length = strlen(out->input_filename);
|
||||
out->_filename = kmemdup(out->input_filename, str_length + 1,
|
||||
GFP_KERNEL);
|
||||
|
||||
if (!out->_filename) {
|
||||
err = -ENOENT;
|
||||
goto error;
|
||||
}
|
||||
} else {
|
||||
str_length = strlen(out->_defaultname);
|
||||
out->_filename = kmemdup(out->_defaultname, str_length + 1,
|
||||
GFP_KERNEL);
|
||||
|
||||
if (!out->_filename) {
|
||||
err = -ENOENT;
|
||||
goto error;
|
||||
}
|
||||
}
|
||||
|
||||
/* Default if filename is empty string */
|
||||
if (strcmp(out->_filename, "") == 0) {
|
||||
if (out->is_60hz) {
|
||||
out->_filename =
|
||||
(out->_pixel_format == PIXEL_FRMT_411) ?
|
||||
"/root/vid411.yuv" : "/root/vidtest.yuv";
|
||||
} else {
|
||||
out->_filename =
|
||||
(out->_pixel_format == PIXEL_FRMT_411) ?
|
||||
"/root/pal411.yuv" : "/root/pal422.yuv";
|
||||
}
|
||||
}
|
||||
|
||||
out->_is_running = 0;
|
||||
out->_frame_count = 0;
|
||||
out->_file_status = RESET_STATUS;
|
||||
@ -835,6 +645,8 @@ int cx25821_vidupstream_init(struct cx25821_channel *chan,
|
||||
out->_pixel_format = pixel_format;
|
||||
out->_line_size = (out->_pixel_format == PIXEL_FRMT_422) ?
|
||||
(WIDTH_D1 * 2) : (WIDTH_D1 * 3) / 2;
|
||||
out->curpos = 0;
|
||||
init_waitqueue_head(&out->waitq);
|
||||
|
||||
err = cx25821_sram_channel_setup_upstream(dev, sram_ch,
|
||||
out->_line_size, 0);
|
||||
|
||||
@ -893,15 +893,47 @@ static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t video_write(struct file *file, const char __user *data, size_t count,
|
||||
loff_t *ppos)
|
||||
{
|
||||
struct cx25821_channel *chan = video_drvdata(file);
|
||||
struct cx25821_dev *dev = chan->dev;
|
||||
struct v4l2_fh *fh = file->private_data;
|
||||
int err = 0;
|
||||
|
||||
if (mutex_lock_interruptible(&dev->lock))
|
||||
return -ERESTARTSYS;
|
||||
if (chan->streaming_fh && chan->streaming_fh != fh) {
|
||||
err = -EBUSY;
|
||||
goto unlock;
|
||||
}
|
||||
if (!chan->streaming_fh) {
|
||||
err = cx25821_vidupstream_init(chan, chan->pixel_formats);
|
||||
if (err)
|
||||
goto unlock;
|
||||
chan->streaming_fh = fh;
|
||||
}
|
||||
|
||||
err = cx25821_write_frame(chan, data, count);
|
||||
count -= err;
|
||||
*ppos += err;
|
||||
|
||||
unlock:
|
||||
mutex_unlock(&dev->lock);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int video_out_release(struct file *file)
|
||||
{
|
||||
struct cx25821_channel *chan = video_drvdata(file);
|
||||
struct cx25821_video_out_data *out = chan->out;
|
||||
struct cx25821_dev *dev = chan->dev;
|
||||
struct v4l2_fh *fh = file->private_data;
|
||||
|
||||
mutex_lock(&dev->lock);
|
||||
if ((chan->id == SRAM_CH09 || chan->id == SRAM_CH10) && out->_is_running)
|
||||
if (chan->streaming_fh == fh) {
|
||||
cx25821_stop_upstream_video(chan);
|
||||
chan->streaming_fh = NULL;
|
||||
}
|
||||
mutex_unlock(&dev->lock);
|
||||
|
||||
return v4l2_fh_release(file);
|
||||
@ -955,6 +987,7 @@ static const struct video_device cx25821_video_device = {
|
||||
static const struct v4l2_file_operations video_out_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = v4l2_fh_open,
|
||||
.write = video_write,
|
||||
.release = video_out_release,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
};
|
||||
|
||||
@ -197,15 +197,11 @@ struct cx25821_video_out_data {
|
||||
|
||||
u32 upstream_riscbuf_size;
|
||||
u32 upstream_databuf_size;
|
||||
struct workqueue_struct *_irq_queues;
|
||||
struct work_struct _irq_work_entry;
|
||||
int is_60hz;
|
||||
int _frame_index;
|
||||
char *input_filename;
|
||||
char *vid_stdname;
|
||||
int pixel_format;
|
||||
char *_filename;
|
||||
char *_defaultname;
|
||||
int cur_frame_index;
|
||||
int curpos;
|
||||
wait_queue_head_t waitq;
|
||||
};
|
||||
|
||||
struct cx25821_channel {
|
||||
@ -440,6 +436,8 @@ extern int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
|
||||
extern int cx25821_vidupstream_init(struct cx25821_channel *chan, int pixel_format);
|
||||
extern int cx25821_audio_upstream_init(struct cx25821_dev *dev,
|
||||
int channel_select);
|
||||
extern int cx25821_write_frame(struct cx25821_channel *chan,
|
||||
const char __user *data, size_t count);
|
||||
extern void cx25821_free_mem_upstream(struct cx25821_channel *chan);
|
||||
extern void cx25821_free_mem_upstream_audio(struct cx25821_dev *dev);
|
||||
extern void cx25821_stop_upstream_video(struct cx25821_channel *chan);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user