[media] gscpa_t613: Add support for the camera button

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

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/t613.c b/drivers/media/video/gspca/t613.c
index 90f0877eb599..c22d4e810f8d 100644
--- a/drivers/media/video/gspca/t613.c
+++ b/drivers/media/video/gspca/t613.c
@@ -30,6 +30,7 @@
 
 #define MODULE_NAME "t613"
 
+#include <linux/input.h>
 #include <linux/slab.h>
 #include "gspca.h"
 
@@ -57,6 +58,7 @@ struct sd {
         u8 effect;
 
         u8 sensor;
+        u8 button_pressed;
 };
 enum sensors {
         SENSOR_OM6802,
@@ -1095,15 +1097,35 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
                 msleep(20);
                 reg_w(gspca_dev, 0x0309);
         }
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+        /* If the last button state is pressed, release it now! */
+        if (sd->button_pressed) {
+                input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
+                input_sync(gspca_dev->input_dev);
+                sd->button_pressed = 0;
+        }
+#endif
 }
 
 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                         u8 *data,                       /* isoc packet */
                         int len)                        /* iso packet length */
 {
+        struct sd *sd = (struct sd *) gspca_dev;
         int pkt_type;
 
         if (data[0] == 0x5a) {
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+                if (len > 20) {
+                        u8 state = (data[20] & 0x80) ? 1 : 0;
+                        if (sd->button_pressed != state) {
+                                input_report_key(gspca_dev->input_dev,
+                                                 KEY_CAMERA, state);
+                                input_sync(gspca_dev->input_dev);
+                                sd->button_pressed = state;
+                        }
+                }
+#endif
                 /* Control Packet, after this came the header again,
                  * but extra bytes came in the packet before this,
                  * sometimes an EOF arrives, sometimes not... */
@@ -1410,6 +1432,9 @@ static const struct sd_desc sd_desc = {
         .stopN = sd_stopN,
         .pkt_scan = sd_pkt_scan,
         .querymenu = sd_querymenu,
+#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
+        .other_input = 1,
+#endif
 };
 
 /* -- module initialisation -- */