[media] media: davinic: vpif_capture: drop started member from struct common_obj

the started member was indicating whether streaming was started
or not, this can be determined by vb2 offering, this patch replaces
the started member from struct common_obj with appropriate vb2 calls.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

2 files changed, 14 insertions, 24 deletions

diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index 6b66f55d09a0..b89877941661 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -73,6 +73,9 @@ static void vpif_config_addr(struct channel_obj *ch, int muxmode);
 
 static u8 channel_first_int[VPIF_NUMBER_OF_OBJECTS][2] = { {1, 1} };
 
+/* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
+static int ycmux_mode;
+
 static inline struct vpif_cap_buffer *to_vpif_buffer(struct vb2_buffer *vb)
 {
         return container_of(vb, struct vpif_cap_buffer, vb);
@@ -194,9 +197,8 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 
         spin_lock_irqsave(&common->irqlock, flags);
 
-        /* Initialize field_id and started member */
+        /* Initialize field_id */
         ch->field_id = 0;
-        common->started = 1;
 
         /* configure 1 or 2 channel mode */
         if (vpif_config_data->setup_input_channel_mode) {
@@ -216,13 +218,12 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 
         /* Call vpif_set_params function to set the parameters and addresses */
         ret = vpif_set_video_params(vpif, ch->channel_id);
-
         if (ret < 0) {
                 vpif_dbg(1, debug, "can't set video params\n");
                 goto err;
         }
 
-        common->started = ret;
+        ycmux_mode = ret;
         vpif_config_addr(ch, ret);
 
         /* Get the next frame from the buffer queue */
@@ -252,7 +253,7 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
                 enable_channel0(1);
         }
         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
-                common->started == 2) {
+                ycmux_mode == 2) {
                 channel1_intr_assert();
                 channel1_intr_enable(1);
                 enable_channel1(1);
@@ -291,11 +292,12 @@ static void vpif_stop_streaming(struct vb2_queue *vq)
                 channel0_intr_enable(0);
         }
         if (VPIF_CHANNEL1_VIDEO == ch->channel_id ||
-                2 == common->started) {
+                ycmux_mode == 2) {
                 enable_channel1(0);
                 channel1_intr_enable(0);
         }
-        common->started = 0;
+
+        ycmux_mode = 0;
 
         ret = v4l2_subdev_call(ch->sd, video, s_stream, 0);
         if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
@@ -404,9 +406,6 @@ static irqreturn_t vpif_channel_isr(int irq, void *dev_id)
         for (i = 0; i < VPIF_NUMBER_OF_OBJECTS; i++) {
                 common = &ch->common[i];
                 /* skip If streaming is not started in this channel */
-                if (0 == common->started)
-                        continue;
-
                 /* Check the field format */
                 if (1 == ch->vpifparams.std_info.frm_fmt) {
                         /* Progressive mode */
@@ -910,10 +909,8 @@ static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 
         vpif_dbg(2, debug, "vpif_s_std\n");
 
-        if (common->started) {
-                vpif_err("streaming in progress\n");
+        if (vb2_is_busy(&common->buffer_queue))
                 return -EBUSY;
-        }
 
         /* Call encoder subdevice function to set the standard */
         ch->video.stdid = std_id;
@@ -998,10 +995,8 @@ static int vpif_s_input(struct file *file, void *priv, unsigned int index)
         if (index >= chan_cfg->input_count)
                 return -EINVAL;
 
-        if (common->started) {
-                vpif_err("Streaming in progress\n");
+        if (vb2_is_busy(&common->buffer_queue))
                 return -EBUSY;
-        }
 
         return vpif_set_input(config, ch, index);
 }
@@ -1092,11 +1087,8 @@ static int vpif_s_fmt_vid_cap(struct file *file, void *priv,
 
         vpif_dbg(2, debug, "%s\n", __func__);
 
-        /* If streaming is started, return error */
-        if (common->started) {
-                vpif_dbg(1, debug, "Streaming is started\n");
+        if (vb2_is_busy(&common->buffer_queue))
                 return -EBUSY;
-        }
 
         pixfmt = &fmt->fmt.pix;
         /* Check for valid field format */
@@ -1707,7 +1699,7 @@ static int vpif_suspend(struct device *dev)
                                 channel0_intr_enable(0);
                         }
                         if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
-                            common->started == 2) {
+                                ycmux_mode == 2) {
                                 enable_channel1(0);
                                 channel1_intr_enable(0);
                         }
@@ -1739,7 +1731,7 @@ static int vpif_resume(struct device *dev)
                                 channel0_intr_enable(1);
                         }
                         if (ch->channel_id == VPIF_CHANNEL1_VIDEO ||
-                            common->started == 2) {
+                                ycmux_mode == 2) {
                                 enable_channel1(1);
                                 channel1_intr_enable(1);
                         }
diff --git a/drivers/media/platform/davinci/vpif_capture.h b/drivers/media/platform/davinci/vpif_capture.h
index 9b7dd06bfb0a..4960504a5108 100644
--- a/drivers/media/platform/davinci/vpif_capture.h
+++ b/drivers/media/platform/davinci/vpif_capture.h
@@ -77,8 +77,6 @@ struct common_obj {
         struct mutex lock;
         /* number of users performing IO */
         u32 io_usrs;
-        /* Indicates whether streaming started */
-        u8 started;
         /* Function pointer to set the addresses */
         void (*set_addr) (unsigned long, unsigned long, unsigned long,
                           unsigned long);