[media] Add support for AUX_PLL on cx2583x chips

This adds support for the AUX_PLL in cx2583x chips which is available in
those although the audio part of the chip is not.
The AUX_PLL is used at least by Terratec in their Grabster AV400 device.
Signed-off-by: NSven Barth <pascaldragon@googlemail.com>
Acked-by: NMike Isely <isely@pobox.com>
Reviewed-by: NAndy Walls <awalls@md.metrocast.net>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx25840/cx25840-audio.c

@@ -437,6 +437,7 @@ void cx25840_audio_set_path(struct i2c_client *client)
 {
 	struct cx25840_state *state = to_state(i2c_get_clientdata(client));
 
+	if (!is_cx2583x(state)) {
 		/* assert soft reset */
 		cx25840_and_or(client, 0x810, ~0x1, 0x01);
 
@@ -457,9 +458,11 @@ void cx25840_audio_set_path(struct i2c_client *client)
 			/* Set Path1 to Analog Demod Main Channel */
 			cx25840_write4(client, 0x8d0, 0x1f063870);
 		}
+	}
 
 	set_audclk_freq(client, state->audclk_freq);
 
+	if (!is_cx2583x(state)) {
 		if (state->aud_input != CX25840_AUDIO_SERIAL) {
 			/* When the microcontroller detects the
 			 * audio format, it will unmute the lines */
@@ -472,6 +475,7 @@ void cx25840_audio_set_path(struct i2c_client *client)
 		/* Ensure the controller is running when we exit */
 		if (is_cx2388x(state) || is_cx231xx(state))
 			cx25840_and_or(client, 0x803, ~0x10, 0x10);
+	}
 }
 
 static void set_volume(struct i2c_client *client, int volume)

drivers/media/video/cx25840/cx25840-core.c

@@ -870,6 +870,11 @@ static void input_change(struct i2c_client *client)
 	}
 	cx25840_and_or(client, 0x401, ~0x60, 0);
 	cx25840_and_or(client, 0x401, ~0x60, 0x60);
+
+	/* Don't write into audio registers on cx2583x chips */
+	if (is_cx2583x(state))
+		return;
+
 	cx25840_and_or(client, 0x810, ~0x01, 1);
 
 	if (state->radio) {
@@ -1028,10 +1033,8 @@ static int set_input(struct i2c_client *client, enum cx25840_video_input vid_inp
 
 	state->vid_input = vid_input;
 	state->aud_input = aud_input;
-	if (!is_cx2583x(state)) {
 	cx25840_audio_set_path(client);
 	input_change(client);
-	}
 
 	if (is_cx2388x(state)) {
 		/* Audio channel 1 src : Parallel 1 */
@@ -1552,8 +1555,6 @@ static int cx25840_s_audio_routing(struct v4l2_subdev *sd,
 	struct cx25840_state *state = to_state(sd);
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (is_cx2583x(state))
-		return -EINVAL;
 	return set_input(client, state->vid_input, input);
 }
 
@@ -1562,7 +1563,6 @@ static int cx25840_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *fr
 	struct cx25840_state *state = to_state(sd);
 	struct i2c_client *client = v4l2_get_subdevdata(sd);
 
-	if (!is_cx2583x(state))
 	input_change(client);
 	return 0;
 }