V4L/DVB (10758): cx18: Convert I2C devices to v4l2_subdevices

This is a major perturbation to cx18 I2C device handling to convert it to the
v4l2_device/subdeivce framework.  This change breaks GPIO audio multiplexer
control for the time being.  It will be fixed in a coming change.

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 13 insertions, 37 deletions

diff --git a/drivers/media/video/cx18/cx18-audio.c b/drivers/media/video/cx18/cx18-audio.c
index d19bd778c6ac..ccd170887b89 100644
--- a/drivers/media/video/cx18/cx18-audio.c
+++ b/drivers/media/video/cx18/cx18-audio.c
@@ -23,9 +23,7 @@
 
 #include "cx18-driver.h"
 #include "cx18-io.h"
-#include "cx18-i2c.h"
 #include "cx18-cards.h"
-#include "cx18-audio.h"
 
 #define CX18_AUDIO_ENABLE 0xc72014
 
@@ -33,54 +31,32 @@
    settings. */
 int cx18_audio_set_io(struct cx18 *cx)
 {
+	const struct cx18_card_audio_input *in;
 	struct v4l2_routing route;
-	u32 audio_input;
 	u32 val;
-	int mux_input;
 	int err;
 
 	/* Determine which input to use */
-	if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) {
-		audio_input = cx->card->radio_input.audio_input;
-		mux_input = cx->card->radio_input.muxer_input;
-	} else {
-		audio_input =
-			cx->card->audio_inputs[cx->audio_input].audio_input;
-		mux_input =
-			cx->card->audio_inputs[cx->audio_input].muxer_input;
-	}
+	if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
+		in = &cx->card->radio_input;
+	else
+		in = &cx->card->audio_inputs[cx->audio_input];
 
 	/* handle muxer chips */
-	route.input = mux_input;
+	route.input = in->muxer_input;
 	route.output = 0;
-	cx18_i2c_hw(cx, cx->card->hw_muxer, VIDIOC_INT_S_AUDIO_ROUTING, &route);
+	v4l2_subdev_call(cx->sd_extmux, audio, s_routing, &route);
 
-	route.input = audio_input;
-	err = cx18_i2c_hw(cx, cx->card->hw_audio_ctrl,
-			VIDIOC_INT_S_AUDIO_ROUTING, &route);
+	route.input = in->audio_input;
+	err = cx18_call_hw_err(cx, cx->card->hw_audio_ctrl,
+			       audio, s_routing, &route);
 	if (err)
 		return err;
 
+	/* FIXME - this internal mux should be abstracted to a subdev */
 	val = cx18_read_reg(cx, CX18_AUDIO_ENABLE) & ~0x30;
-	val |= (audio_input > CX18_AV_AUDIO_SERIAL2) ? 0x20 :
-					(audio_input << 4);
+	val |= (in->audio_input > CX18_AV_AUDIO_SERIAL2) ? 0x20 :
+					(in->audio_input << 4);
 	cx18_write_reg_expect(cx, val | 0xb00, CX18_AUDIO_ENABLE, val, 0x30);
 	return 0;
 }
-
-void cx18_audio_set_route(struct cx18 *cx, struct v4l2_routing *route)
-{
-	cx18_i2c_hw(cx, cx->card->hw_audio_ctrl,
-			VIDIOC_INT_S_AUDIO_ROUTING, route);
-}
-
-void cx18_audio_set_audio_clock_freq(struct cx18 *cx, u8 freq)
-{
-	static u32 freqs[3] = { 44100, 48000, 32000 };
-
-	/* The audio clock of the digitizer must match the codec sample
-	   rate otherwise you get some very strange effects. */
-	if (freq > 2)
-		return;
-	cx18_call_i2c_clients(cx, VIDIOC_INT_AUDIO_CLOCK_FREQ, &freqs[freq]);
-}