V4L/DVB (12626): gspca_mr97310a: Allow overriding of detected sensor type

gspca_mr97310a: Allow overriding of detected sensor type

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

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/media/video/gspca/mr97310a.c b/drivers/media/video/gspca/mr97310a.c
index 8190a1d4dc84..169cdb65c14a 100644
--- a/drivers/media/video/gspca/mr97310a.c
+++ b/drivers/media/video/gspca/mr97310a.c
@@ -57,6 +57,11 @@ MODULE_AUTHOR("Kyle Guinn <elyk03@gmail.com>,"
 MODULE_DESCRIPTION("GSPCA/Mars-Semi MR97310A USB Camera Driver");
 MODULE_LICENSE("GPL");
 
+/* global parameters */
+int force_sensor_type = -1;
+module_param(force_sensor_type, int, 0644);
+MODULE_PARM_DESC(force_sensor_type, "Force sensor type (-1 (auto), 0 or 1)");
+
 /* specific webcam descriptor */
 struct sd {
         struct gspca_dev gspca_dev;  /* !! must be the first item */
@@ -401,6 +406,12 @@ static int sd_config(struct gspca_dev *gspca_dev,
                 PDEBUG(D_PROBE, "MR97310A CIF camera detected, sensor: %d",
                        sd->sensor_type);
 
+                if (force_sensor_type != -1) {
+                        sd->sensor_type = !! force_sensor_type;
+                        PDEBUG(D_PROBE, "Forcing sensor type to: %d",
+                               sd->sensor_type);
+                }
+
                 if (sd->sensor_type == 0)
                         gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX);
         } else {
@@ -606,6 +617,12 @@ static int start_vga_cam(struct gspca_dev *gspca_dev)
                 msleep(200);
         }
 
+        if (force_sensor_type != -1) {
+                sd->sensor_type = !! force_sensor_type;
+                PDEBUG(D_PROBE, "Forcing sensor type to: %d",
+                       sd->sensor_type);
+        }
+
         /*
          * Known VGA cameras.
          * This test is only run if the previous test returned 0x30, but