V4L/DVB: s2255drv: adding video input status capability

Video status capability for inputs on Sensoray 2255 driver.

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 81 insertions, 4 deletions

diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c
index 3de914deb8ee..a9c53335fd8f 100644
--- a/drivers/media/video/s2255drv.c
+++ b/drivers/media/video/s2255drv.c
@@ -1,7 +1,7 @@
 /*
  *  s2255drv.c - a driver for the Sensoray 2255 USB video capture device
  *
- *   Copyright (C) 2007-2008 by Sensoray Company Inc.
+ *   Copyright (C) 2007-2010 by Sensoray Company Inc.
  *                              Dean Anderson
  *
  * Some video buffer code based on vivi driver:
@@ -76,11 +76,13 @@
 #define S2255_LOAD_TIMEOUT      (5000 + S2255_DSP_BOOTTIME)
 #define S2255_DEF_BUFS          16
 #define S2255_SETMODE_TIMEOUT   500
+#define S2255_VIDSTATUS_TIMEOUT 350
 #define MAX_CHANNELS            4
 #define S2255_MARKER_FRAME      0x2255DA4AL
 #define S2255_MARKER_RESPONSE   0x2255ACACL
 #define S2255_RESPONSE_SETMODE  0x01
 #define S2255_RESPONSE_FW       0x10
+#define S2255_RESPONSE_STATUS   0x20
 #define S2255_USB_XFER_SIZE     (16 * 1024)
 #define MAX_CHANNELS            4
 #define MAX_PIPE_BUFFERS        1
@@ -261,9 +263,16 @@ struct s2255_dev {
         int                     chn_configured[MAX_CHANNELS];
         wait_queue_head_t       wait_setmode[MAX_CHANNELS];
         int                     setmode_ready[MAX_CHANNELS];
+        /* video status items */
+        int                     vidstatus[MAX_CHANNELS];
+        wait_queue_head_t       wait_vidstatus[MAX_CHANNELS];
+        int                     vidstatus_ready[MAX_CHANNELS];
+
         int                     chn_ready;
         struct kref             kref;
         spinlock_t              slock;
+        /* dsp firmware version (f2255usb.bin) */
+        int                     dsp_fw_ver;
 };
 #define to_s2255_dev(d) container_of(d, struct s2255_dev, kref)
 
@@ -296,8 +305,12 @@ struct s2255_fh {
 
 /* current cypress EEPROM firmware version */
 #define S2255_CUR_USB_FWVER     ((3 << 8) | 6)
+/* current DSP FW version */
+#define S2255_CUR_DSP_FWVER     5
+/* Need DSP version 5+ for video status feature */
+#define S2255_MIN_DSP_STATUS    5
 #define S2255_MAJOR_VERSION     1
-#define S2255_MINOR_VERSION     14
+#define S2255_MINOR_VERSION     15
 #define S2255_RELEASE           0
 #define S2255_VERSION           KERNEL_VERSION(S2255_MAJOR_VERSION, \
                                                S2255_MINOR_VERSION, \
@@ -1261,6 +1274,42 @@ static int s2255_set_mode(struct s2255_dev *dev, unsigned long chn,
         return res;
 }
 
+static int s2255_cmd_status(struct s2255_dev *dev, unsigned long chn,
+                            u32 *pstatus)
+{
+        int res;
+        u32 *buffer;
+        u32 chn_rev;
+        mutex_lock(&dev->lock);
+        chn_rev = G_chnmap[chn];
+        dprintk(4, "%s chan %d\n", __func__, chn_rev);
+        buffer = kzalloc(512, GFP_KERNEL);
+        if (buffer == NULL) {
+                dev_err(&dev->udev->dev, "out of mem\n");
+                mutex_unlock(&dev->lock);
+                return -ENOMEM;
+        }
+        /* form the get vid status command */
+        buffer[0] = IN_DATA_TOKEN;
+        buffer[1] = chn_rev;
+        buffer[2] = CMD_STATUS;
+        *pstatus = 0;
+        dev->vidstatus_ready[chn] = 0;
+        res = s2255_write_config(dev->udev, (unsigned char *)buffer, 512);
+        kfree(buffer);
+        wait_event_timeout(dev->wait_vidstatus[chn],
+                           (dev->vidstatus_ready[chn] != 0),
+                           msecs_to_jiffies(S2255_VIDSTATUS_TIMEOUT));
+        if (dev->vidstatus_ready[chn] != 1) {
+                printk(KERN_DEBUG "s2255: no vidstatus response\n");
+                res = -EFAULT;
+        }
+        *pstatus = dev->vidstatus[chn];
+        dprintk(4, "%s, vid status %d\n", __func__, *pstatus);
+        mutex_unlock(&dev->lock);
+        return res;
+}
+
 static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
 {
         int res;
@@ -1386,11 +1435,24 @@ out_s_std:
 static int vidioc_enum_input(struct file *file, void *priv,
                              struct v4l2_input *inp)
 {
+        struct s2255_fh *fh = priv;
+        struct s2255_dev *dev = fh->dev;
+        u32 status = 0;
+
         if (inp->index != 0)
                 return -EINVAL;
 
         inp->type = V4L2_INPUT_TYPE_CAMERA;
         inp->std = S2255_NORMS;
+        inp->status = 0;
+        if (dev->dsp_fw_ver >= S2255_MIN_DSP_STATUS) {
+                int rc;
+                rc = s2255_cmd_status(dev, fh->channel, &status);
+                dprintk(4, "s2255_cmd_status rc: %d status %x\n", rc, status);
+                if (rc == 0)
+                        inp->status =  (status & 0x01) ? 0
+                                : V4L2_IN_ST_NO_SIGNAL;
+        }
         strlcpy(inp->name, "Camera", sizeof(inp->name));
         return 0;
 }
@@ -1700,6 +1762,8 @@ static void s2255_destroy(struct kref *kref)
         for (i = 0; i < MAX_CHANNELS; i++) {
                 dev->setmode_ready[i] = 1;
                 wake_up(&dev->wait_setmode[i]);
+                dev->vidstatus_ready[i] = 1;
+                wake_up(&dev->wait_vidstatus[i]);
         }
         mutex_lock(&dev->open_lock);
         /* reset the DSP so firmware can be reload next time */
@@ -1965,6 +2029,13 @@ static int save_frame(struct s2255_dev *dev, struct s2255_pipeinfo *pipe_info)
                                                    S2255_FW_SUCCESS);
                                         wake_up(&dev->fw_data->wait_fw);
                                         break;
+                                case S2255_RESPONSE_STATUS:
+                                        dev->vidstatus[cc] = pdword[3];
+                                        dev->vidstatus_ready[cc] = 1;
+                                        wake_up(&dev->wait_vidstatus[cc]);
+                                        dprintk(5, "got vidstatus %x chan %d\n",
+                                                pdword[3], cc);
+                                        break;
                                 default:
                                         printk(KERN_INFO "s2255 unknown resp\n");
                                 }
@@ -2527,9 +2598,10 @@ static int s2255_probe(struct usb_interface *interface,
         dev->timer.data = (unsigned long)dev->fw_data;
 
         init_waitqueue_head(&dev->fw_data->wait_fw);
-        for (i = 0; i < MAX_CHANNELS; i++)
+        for (i = 0; i < MAX_CHANNELS; i++) {
                 init_waitqueue_head(&dev->wait_setmode[i]);
-
+                init_waitqueue_head(&dev->wait_vidstatus[i]);
+        }
 
         dev->fw_data->fw_urb = usb_alloc_urb(0, GFP_KERNEL);
 
@@ -2561,6 +2633,9 @@ static int s2255_probe(struct usb_interface *interface,
                 __le32 *pRel;
                 pRel = (__le32 *) &dev->fw_data->fw->data[fw_size - 4];
                 printk(KERN_INFO "s2255 dsp fw version %x\n", *pRel);
+                dev->dsp_fw_ver = *pRel;
+                if (*pRel < S2255_CUR_DSP_FWVER)
+                        printk(KERN_INFO "s2255: f2255usb.bin out of date.\n");
         }
         /* loads v4l specific */
         s2255_probe_v4l(dev);
@@ -2597,6 +2672,8 @@ static void s2255_disconnect(struct usb_interface *interface)
         for (i = 0; i < MAX_CHANNELS; i++) {
                 dev->setmode_ready[i] = 1;
                 wake_up(&dev->wait_setmode[i]);
+                dev->vidstatus_ready[i] = 1;
+                wake_up(&dev->wait_vidstatus[i]);
         }
 
         mutex_lock(&dev->open_lock);