V4L/DVB: gspca_stv06xx: Add support for camera button

Only tested with an stv6422 based cam, as that is the only stv06xx cam
I have with a button.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/stv06xx/stv06xx.c b/drivers/media/video/gspca/stv06xx/stv06xx.c
index de823ed..af73da3 100644 (file)
--- a/drivers/media/video/gspca/stv06xx/stv06xx.c
+++ b/drivers/media/video/gspca/stv06xx/stv06xx.c
@@ -27,6 +27,7 @@
  * P/N 861040-0000: Sensor ST VV6410       ASIC STV0610   - QuickCam Web
  */
 
+#include <linux/input.h>
 #include "stv06xx_sensor.h"
 
 MODULE_AUTHOR("Erik Andrén");
@@ -427,6 +428,29 @@ frame_data:
        }
 }
 
+#ifdef CONFIG_INPUT
+static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
+                       u8 *data,               /* interrupt packet data */
+                       int len)                /* interrupt packet length */
+{
+       int ret = -EINVAL;
+
+       if (len == 1 && data[0] == 0x80) {
+               input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
+               input_sync(gspca_dev->input_dev);
+               ret = 0;
+       }
+
+       if (len == 1 && data[0] == 0x88) {
+               input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
+               input_sync(gspca_dev->input_dev);
+               ret = 0;
+       }
+
+       return ret;
+}
+#endif
+
 static int stv06xx_config(struct gspca_dev *gspca_dev,
                          const struct usb_device_id *id);
 
@@ -437,7 +461,10 @@ static const struct sd_desc sd_desc = {
        .init = stv06xx_init,
        .start = stv06xx_start,
        .stopN = stv06xx_stopN,
-       .pkt_scan = stv06xx_pkt_scan
+       .pkt_scan = stv06xx_pkt_scan,
+#ifdef CONFIG_INPUT
+       .int_pkt_scan = sd_int_pkt_scan,
+#endif
 };
 
 /* This function is called at probe time */