#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <linux/version.h>
+#include <linux/mm.h>
#include <media/videobuf-vmalloc.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
#include <linux/vmalloc.h>
#include <linux/usb.h>
/* maximum time for DSP to start responding after last FW word loaded(ms) */
#define S2255_DSP_BOOTTIME 400
/* maximum time to wait for firmware to load (ms) */
-#define S2255_LOAD_TIMEOUT (5000+S2255_DSP_BOOTTIME)
+#define S2255_LOAD_TIMEOUT (5000 + S2255_DSP_BOOTTIME)
#define S2255_DEF_BUFS 16
#define MAX_CHANNELS 4
#define FRAME_MARKER 0x2255DA4AL
-#define MAX_PIPE_USBBLOCK (40*1024)
-#define DEFAULT_PIPE_USBBLOCK (16*1024)
+#define MAX_PIPE_USBBLOCK (40 * 1024)
+#define DEFAULT_PIPE_USBBLOCK (16 * 1024)
#define MAX_CHANNELS 4
#define MAX_PIPE_BUFFERS 1
#define SYS_FRAMES 4
/* maximum size is PAL full size plus room for the marker header(s) */
-#define SYS_FRAMES_MAXSIZE (720*288*2*2 + 4096)
+#define SYS_FRAMES_MAXSIZE (720 * 288 * 2 * 2 + 4096)
#define DEF_USB_BLOCK (4096)
#define LINE_SZ_4CIFS_NTSC 640
#define LINE_SZ_2CIFS_NTSC 640
#define DEF_MODEI_NTSC_CONT {FORMAT_NTSC, DEF_SCALE, DEF_COLOR, \
DEF_FDEC, DEF_BRIGHT, DEF_CONTRAST, DEF_SATURATION, \
- DEF_HUE, 0, DEF_USB_BLOCK, 0 }
+ DEF_HUE, 0, DEF_USB_BLOCK, 0}
struct s2255_dmaqueue {
struct list_head active;
#define S2255_FW_LOADED_DSPWAIT 1
#define S2255_FW_SUCCESS 2
#define S2255_FW_FAILED 3
+#define S2255_FW_DISCONNECTING 4
struct s2255_fw {
int fw_loaded;
struct s2255_fh {
struct s2255_dev *dev;
- unsigned int resources;
const struct s2255_fmt *fmt;
unsigned int width;
unsigned int height;
/* mode below is the desired mode.
mode in s2255_dev is the current mode that was last set */
struct s2255_mode mode;
+ int resources[MAX_CHANNELS];
};
-#define S2255_MAX_USERS 1
-
#define CUR_USB_FWVER 774 /* current cypress EEPROM firmware version */
#define S2255_MAJOR_VERSION 1
#define S2255_MINOR_VERSION 13
#define PREFIX_SIZE 512
/* Channels on box are in reverse order */
-static unsigned long G_chnmap[MAX_CHANNELS] = { 3, 2, 1, 0 };
+static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
static LIST_HEAD(s2255_devlist);
/* start video number */
static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
-module_param(debug, int, 0);
+module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level(0-100) default 0");
-module_param(vid_limit, int, 0);
+module_param(vid_limit, int, 0644);
MODULE_PARM_DESC(vid_limit, "video memory limit(Mb)");
-module_param(video_nr, int, 0);
+module_param(video_nr, int, 0644);
MODULE_PARM_DESC(video_nr, "start video minor(-1 default autodetect)");
/* USB device table */
}
-/* converts 2255 planar format to yuyv or uyvy */
+/*
+ * TODO: fixme: move YUV reordering to hardware
+ * converts 2255 planar format to yuyv or uyvy
+ */
static void planar422p_to_yuv_packed(const unsigned char *in,
unsigned char *out,
int width, int height,
dprintk(100, "s2255 timer\n");
if (usb_submit_urb(data->fw_urb, GFP_ATOMIC) < 0) {
printk(KERN_ERR "s2255: can't submit urb\n");
- if (data->fw) {
- release_firmware(data->fw);
- data->fw = NULL;
- }
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
return;
}
}
struct usb_device *udev = urb->dev;
int len;
dprintk(100, "udev %p urb %p", udev, urb);
-
if (urb->status) {
dev_err(&udev->dev, "URB failed with status %d", urb->status);
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
return;
}
if (data->fw_urb == NULL) {
- dev_err(&udev->dev, "early disconncect\n");
+ dev_err(&udev->dev, "s2255 disconnected\n");
+ atomic_set(&data->fw_state, S2255_FW_FAILED);
+ /* wake up anything waiting for the firmware */
+ wake_up(&data->wait_fw);
return;
}
#define CHUNK_SIZE 512
if (0 == *count)
*count = S2255_DEF_BUFS;
- while (*size * *count > vid_limit * 1024 * 1024)
+ while (*size * (*count) > vid_limit * 1024 * 1024)
(*count)--;
return 0;
}
/* it's free, grab it */
dev->resources[fh->channel] = 1;
- dprintk(1, "res: get\n");
+ fh->resources[fh->channel] = 1;
+ dprintk(1, "s2255: res: get\n");
mutex_unlock(&dev->lock);
return 1;
}
static int res_locked(struct s2255_dev *dev, struct s2255_fh *fh)
{
- return (dev->resources[fh->channel]);
+ return dev->resources[fh->channel];
+}
+
+static int res_check(struct s2255_fh *fh)
+{
+ return fh->resources[fh->channel];
}
+
static void res_free(struct s2255_dev *dev, struct s2255_fh *fh)
{
+ mutex_lock(&dev->lock);
dev->resources[fh->channel] = 0;
+ fh->resources[fh->channel] = 0;
+ mutex_unlock(&dev->lock);
dprintk(1, "res: put\n");
}
struct s2255_dev *dev = fh->dev;
strlcpy(cap->driver, "s2255", sizeof(cap->driver));
strlcpy(cap->card, "s2255", sizeof(cap->card));
- strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info));
+ strlcpy(cap->bus_info, dev_name(&dev->udev->dev),
+ sizeof(cap->bus_info));
cap->version = S2255_VERSION;
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
return 0;
f->fmt.pix.pixelformat = fh->fmt->fourcc;
f->fmt.pix.bytesperline = f->fmt.pix.width * (fh->fmt->depth >> 3);
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
-
- return (0);
+ return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
ret = vidioc_try_fmt_vid_cap(file, fh, f);
if (ret < 0)
- return (ret);
+ return ret;
fmt = format_by_fourcc(f->fmt.pix.pixelformat);
}
if (!res_get(dev, fh)) {
- dev_err(&dev->udev->dev, "res get busy\n");
+ dev_err(&dev->udev->dev, "s2255: stream busy\n");
return -EBUSY;
}
}
s2255_stop_acquire(dev, fh->channel);
res = videobuf_streamoff(&fh->vb_vidq);
+ if (res < 0)
+ return res;
res_free(dev, fh);
- return res;
+ return 0;
}
static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
inp->type = V4L2_INPUT_TYPE_CAMERA;
inp->std = S2255_NORMS;
strlcpy(inp->name, "Camera", sizeof(inp->name));
- return (0);
+ return 0;
}
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++)
if (qc->id && qc->id == s2255_qctrl[i].id) {
memcpy(qc, &(s2255_qctrl[i]), sizeof(*qc));
- return (0);
+ return 0;
}
dprintk(4, "query_ctrl -EINVAL %d\n", qc->id);
for (i = 0; i < ARRAY_SIZE(s2255_qctrl); i++)
if (ctrl->id == s2255_qctrl[i].id) {
ctrl->value = qctl_regs[i];
- return (0);
+ return 0;
}
dprintk(4, "g_ctrl -EINVAL\n");
if (ctrl->id == s2255_qctrl[i].id) {
if (ctrl->value < s2255_qctrl[i].minimum ||
ctrl->value > s2255_qctrl[i].maximum)
- return (-ERANGE);
+ return -ERANGE;
qctl_regs[i] = ctrl->value;
/* update the mode to the corresponding value */
mutex_lock(&dev->open_lock);
dev->users[cur_channel]++;
- if (dev->users[cur_channel] > S2255_MAX_USERS) {
- dev->users[cur_channel]--;
- mutex_unlock(&dev->open_lock);
- printk(KERN_INFO "s2255drv: too many open handles!\n");
- return -EBUSY;
- }
+ dprintk(4, "s2255: open_handles %d\n", dev->users[cur_channel]);
if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_FAILED) {
err("2255 firmware load failed. retrying.\n");
msecs_to_jiffies(S2255_LOAD_TIMEOUT));
if (atomic_read(&dev->fw_data->fw_state)
!= S2255_FW_SUCCESS) {
- printk(KERN_INFO "2255 FW load failed after 2 tries\n");
+ printk(KERN_INFO "2255 FW load failed.\n");
+ dev->users[cur_channel]--;
mutex_unlock(&dev->open_lock);
return -EFAULT;
}
!= S2255_FW_SUCCESS) {
printk(KERN_INFO "2255 firmware not loaded"
"try again\n");
+ dev->users[cur_channel]--;
mutex_unlock(&dev->open_lock);
return -EBUSY;
}
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh) {
+ dev->users[cur_channel]--;
mutex_unlock(&dev->open_lock);
return -ENOMEM;
}
printk(KERN_ERR "s2255drv: kref problem\n");
return;
}
+
+ /*
+ * Wake up any firmware load waiting (only done in .open,
+ * which holds the open_lock mutex)
+ */
+ atomic_set(&dev->fw_data->fw_state, S2255_FW_DISCONNECTING);
+ wake_up(&dev->fw_data->wait_fw);
+
/* prevent s2255_disconnect from racing s2255_open */
mutex_lock(&dev->open_lock);
s2255_exit_v4l(dev);
- /* device unregistered so no longer possible to open. open_mutex
- can be unlocked */
+ /*
+ * device unregistered so no longer possible to open. open_mutex
+ * can be unlocked and timers deleted afterwards.
+ */
mutex_unlock(&dev->open_lock);
/* board shutdown stops the read pipe if it is running */
s2255_board_shutdown(dev);
/* make sure firmware still not trying to load */
+ del_timer(&dev->timer); /* only started in .probe and .open */
+
if (dev->fw_data->fw_urb) {
dprintk(2, "kill fw_urb\n");
usb_kill_urb(dev->fw_data->fw_urb);
dev->fw_data->fw_urb = NULL;
}
- /* make sure we aren't waiting for the DSP */
- if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_LOADED_DSPWAIT) {
- /* if we are, wait for the wakeup for fw_success or timeout */
- wait_event_timeout(dev->fw_data->wait_fw,
- (atomic_read(&dev->fw_data->fw_state)
- == S2255_FW_SUCCESS),
- msecs_to_jiffies(S2255_LOAD_TIMEOUT));
- }
+ /*
+ * delete the dsp_wait timer, which sets the firmware
+ * state on completion. This is done before fw_data
+ * is freed below.
+ */
- if (dev->fw_data) {
- kfree(dev->fw_data->pfw_data);
- kfree(dev->fw_data);
- }
+ del_timer(&dev->fw_data->dsp_wait); /* only started in .open */
- if (dev->fw_data->fw) {
+ if (dev->fw_data->fw)
release_firmware(dev->fw_data->fw);
- dev->fw_data->fw = NULL;
- }
+ kfree(dev->fw_data->pfw_data);
+ kfree(dev->fw_data);
usb_put_dev(dev->udev);
dprintk(1, "%s", __func__);
mutex_lock(&dev->open_lock);
- if (dev->b_acquire[fh->channel])
- s2255_stop_acquire(dev, fh->channel);
- res_free(dev, fh);
+ /* turn off stream */
+ if (res_check(fh)) {
+ if (dev->b_acquire[fh->channel])
+ s2255_stop_acquire(dev, fh->channel);
+ videobuf_streamoff(&fh->vb_vidq);
+ res_free(dev, fh);
+ }
+
videobuf_mmap_free(&fh->vb_vidq);
- kfree(fh);
dev->users[fh->channel]--;
+
mutex_unlock(&dev->open_lock);
kref_put(&dev->kref, s2255_destroy);
dprintk(1, "s2255: close called (minor=%d, users=%d)\n",
minor, dev->users[fh->channel]);
+ kfree(fh);
return 0;
}
.llseek = no_llseek,
};
-static struct video_device template = {
- .name = "s2255v",
- .type = VID_TYPE_CAPTURE,
- .fops = &s2255_fops_v4l,
- .minor = -1,
- .release = video_device_release,
+static const struct v4l2_ioctl_ops s2255_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidioc_cgmbuf,
#endif
+};
+
+static struct video_device template = {
+ .name = "s2255v",
+ .fops = &s2255_fops_v4l,
+ .ioctl_ops = &s2255_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
.tvnorms = S2255_NORMS,
.current_norm = V4L2_STD_NTSC_M,
};
/* register 4 video devices */
dev->vdev[i] = video_device_alloc();
memcpy(dev->vdev[i], &template, sizeof(struct video_device));
- dev->vdev[i]->dev = &dev->interface->dev;
+ dev->vdev[i]->parent = &dev->interface->dev;
if (video_nr == -1)
ret = video_register_device(dev->vdev[i],
VFL_TYPE_GRABBER,
projects / linux-2.6-omap-h63xx.git / blobdiff