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path: root/drivers/media/video/msp3400-driver.c
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Diffstat (limited to 'drivers/media/video/msp3400-driver.c')
-rw-r--r--drivers/media/video/msp3400-driver.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 027c3d35eaa5..a82a26aa1e48 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -288,17 +288,19 @@ void msp_set_audio(struct i2c_client *client)
struct msp_state *state = i2c_get_clientdata(client);
int bal = 0, bass, treble, loudness;
int val = 0;
+ int reallymuted = state->muted | state->scan_in_progress;
- if (!state->muted)
+ if (!reallymuted)
val = (state->volume * 0x7f / 65535) << 8;
- v4l_dbg(1, msp_debug, client, "mute=%s volume=%d\n",
- state->muted ? "on" : "off", state->volume);
+ v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
+ state->muted ? "on" : "off", state->scan_in_progress ? "yes" : "no",
+ state->volume);
msp_write_dsp(client, 0x0000, val);
- msp_write_dsp(client, 0x0007, state->muted ? 0x1 : (val | 0x1));
+ msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
if (state->has_scart2_out_volume)
- msp_write_dsp(client, 0x0040, state->muted ? 0x1 : (val | 0x1));
+ msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
if (state->has_headphones)
msp_write_dsp(client, 0x0006, val);
if (!state->has_sound_processing)
@@ -671,21 +673,23 @@ static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
int sc_in = rt->input & 0x7;
int sc1_out = rt->output & 0xf;
int sc2_out = (rt->output >> 4) & 0xf;
- u16 val;
+ u16 val, reg;
+ if (state->routing.input == rt->input &&
+ state->routing.output == rt->output)
+ break;
state->routing = *rt;
- if (state->opmode == OPMODE_AUTOSELECT) {
- val = msp_read_dem(client, 0x30) & ~0x100;
- msp_write_dem(client, 0x30, val | (tuner ? 0x100 : 0));
- } else {
- val = msp_read_dem(client, 0xbb) & ~0x100;
- msp_write_dem(client, 0xbb, val | (tuner ? 0x100 : 0));
- }
msp_set_scart(client, sc_in, 0);
msp_set_scart(client, sc1_out, 1);
msp_set_scart(client, sc2_out, 2);
msp_set_audmode(client);
- msp_wake_thread(client);
+ reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
+ val = msp_read_dem(client, reg);
+ if (tuner != ((val >> 8) & 1)) {
+ msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
+ /* wake thread when a new tuner input is chosen */
+ msp_wake_thread(client);
+ }
break;
}