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path: root/drivers/media/video/cx18/cx18-audio.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-audio.c')
-rw-r--r--drivers/media/video/cx18/cx18-audio.c50
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 @@
23 23
24#include "cx18-driver.h" 24#include "cx18-driver.h"
25#include "cx18-io.h" 25#include "cx18-io.h"
26#include "cx18-i2c.h"
27#include "cx18-cards.h" 26#include "cx18-cards.h"
28#include "cx18-audio.h"
29 27
30#define CX18_AUDIO_ENABLE 0xc72014 28#define CX18_AUDIO_ENABLE 0xc72014
31 29
@@ -33,54 +31,32 @@
33 settings. */ 31 settings. */
34int cx18_audio_set_io(struct cx18 *cx) 32int cx18_audio_set_io(struct cx18 *cx)
35{ 33{
34 const struct cx18_card_audio_input *in;
36 struct v4l2_routing route; 35 struct v4l2_routing route;
37 u32 audio_input;
38 u32 val; 36 u32 val;
39 int mux_input;
40 int err; 37 int err;
41 38
42 /* Determine which input to use */ 39 /* Determine which input to use */
43 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) { 40 if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
44 audio_input = cx->card->radio_input.audio_input; 41 in = &cx->card->radio_input;
45 mux_input = cx->card->radio_input.muxer_input; 42 else
46 } else { 43 in = &cx->card->audio_inputs[cx->audio_input];
47 audio_input =
48 cx->card->audio_inputs[cx->audio_input].audio_input;
49 mux_input =
50 cx->card->audio_inputs[cx->audio_input].muxer_input;
51 }
52 44
53 /* handle muxer chips */ 45 /* handle muxer chips */
54 route.input = mux_input; 46 route.input = in->muxer_input;
55 route.output = 0; 47 route.output = 0;
56 cx18_i2c_hw(cx, cx->card->hw_muxer, VIDIOC_INT_S_AUDIO_ROUTING, &route); 48 v4l2_subdev_call(cx->sd_extmux, audio, s_routing, &route);
57 49
58 route.input = audio_input; 50 route.input = in->audio_input;
59 err = cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, 51 err = cx18_call_hw_err(cx, cx->card->hw_audio_ctrl,
60 VIDIOC_INT_S_AUDIO_ROUTING, &route); 52 audio, s_routing, &route);
61 if (err) 53 if (err)
62 return err; 54 return err;
63 55
56 /* FIXME - this internal mux should be abstracted to a subdev */
64 val = cx18_read_reg(cx, CX18_AUDIO_ENABLE) & ~0x30; 57 val = cx18_read_reg(cx, CX18_AUDIO_ENABLE) & ~0x30;
65 val |= (audio_input > CX18_AV_AUDIO_SERIAL2) ? 0x20 : 58 val |= (in->audio_input > CX18_AV_AUDIO_SERIAL2) ? 0x20 :
66 (audio_input << 4); 59 (in->audio_input << 4);
67 cx18_write_reg_expect(cx, val | 0xb00, CX18_AUDIO_ENABLE, val, 0x30); 60 cx18_write_reg_expect(cx, val | 0xb00, CX18_AUDIO_ENABLE, val, 0x30);
68 return 0; 61 return 0;
69} 62}
70
71void cx18_audio_set_route(struct cx18 *cx, struct v4l2_routing *route)
72{
73 cx18_i2c_hw(cx, cx->card->hw_audio_ctrl,
74 VIDIOC_INT_S_AUDIO_ROUTING, route);
75}
76
77void cx18_audio_set_audio_clock_freq(struct cx18 *cx, u8 freq)
78{
79 static u32 freqs[3] = { 44100, 48000, 32000 };
80
81 /* The audio clock of the digitizer must match the codec sample
82 rate otherwise you get some very strange effects. */
83 if (freq > 2)
84 return;
85 cx18_call_i2c_clients(cx, VIDIOC_INT_AUDIO_CLOCK_FREQ, &freqs[freq]);
86}