[media] mt9m111: move lastpage to struct mt9m111 for multi instances

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
index a357aa889fc6c07357b91c86877f8094db7d8539..07af26e6bebdacf9a2ea8ce70debfddaabb0c12a 100644 (file)
--- a/drivers/media/video/mt9m111.c
+++ b/drivers/media/video/mt9m111.c
@@ -184,6 +184,7 @@ struct mt9m111 {
        struct mutex power_lock; /* lock to protect power_count */
        int power_count;
        const struct mt9m111_datafmt *fmt;
+       int lastpage;   /* PageMap cache value */
        unsigned int gain;
        unsigned char autoexposure;
        unsigned char datawidth;
@@ -202,17 +203,17 @@ static int reg_page_map_set(struct i2c_client *client, const u16 reg)
 {
        int ret;
        u16 page;
-       static int lastpage = -1;       /* PageMap cache value */
+       struct mt9m111 *mt9m111 = to_mt9m111(client);
 
        page = (reg >> 8);
-       if (page == lastpage)
+       if (page == mt9m111->lastpage)
                return 0;
        if (page > 2)
                return -EINVAL;
 
        ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
        if (!ret)
-               lastpage = page;
+               mt9m111->lastpage = page;
        return ret;
 }
 
@@ -932,6 +933,8 @@ static int mt9m111_video_probe(struct soc_camera_device *icd,
        BUG_ON(!icd->parent ||
               to_soc_camera_host(icd->parent)->nr != icd->iface);
 
+       mt9m111->lastpage = -1;
+
        mt9m111->autoexposure = 1;
        mt9m111->autowhitebalance = 1;