On 05/31/2012 05:37 PM, Mark Brown wrote:
On Thu, May 31, 2012 at 04:49:26PM -0600, Stephen Warren wrote:
[ having problems getting codec/codec DAI links working]
...
It's really hard to comment in much more detail, you've not shown enough information. What are the DAI links connecting the devices? Is the rest of the DAPM path through the system connected? My best guess is that (possibly due to the linking of the playback widgets) you don't have a full DAPM path.
Here's hopefully everything:
I'm playing back audio on CPU DAI named APBIF0. This is connected to AHUB XBAR DAI also named APBIF0. This link appears to be working, since the XBAR's stream node is active:
# cat tegra30-ahub-xbar/dapm/APBIF0\ Receive APBIF0 Receive: On in 1 out 1 stream APBIF0 Receive active out "static" "APBIF0 RX"
Tracing the path through the XBAR, the paths seem set up OK, but nothing else is active:
# cat tegra30-ahub-xbar/dapm/APBIF0\ RX APBIF0 RX: Off in 1 out 0 in "static" "APBIF0 Receive" out "APBIF0 RX" "I2S1 Mux"
# cat tegra30-ahub-xbar/dapm/I2S1\ Mux I2S1 Mux: Off in 1 out 0 in "APBIF0 RX" "APBIF0 RX" out "static" "I2S1 TX"
# cat tegra30-ahub-xbar/dapm/I2S1\ TX I2S1 TX: Off in 1 out 0 in "static" "I2S1 Mux" out "static" "I2S1 Transmit"
# cat tegra30-ahub-xbar/dapm/I2S1\ Transmit I2S1 Transmit: Off in 1 out 0 stream I2S1 Transmit inactive in "static" "I2S1 TX"
There is also a DAI link from XBAR's I2S1 TX/Transmit to the I2S controller's CIF Receive/RX, which appears to have been linked correctly since both DAI names show up in the I2S controller's CIF Receive stream debugfs file (see "in" line):
# cat tegra30-i2s.1/dapm/CIF\ Receive CIF Receive: Off in 0 out 0 stream CIF Receive inactive in "static" "I2S1 Transmit-CIF Receive" out "static" "CIF RX"
(I assume that the "in" line of the AHUB's "APBIF0 Receive" debugfs file way above is only "APBIF0" instead of "APBIF0-APBIF0" since it's a cpu/codec link not a codec/codec link?)
And again, the path through the I2S controller looks complete:
# cat tegra30-i2s.1/dapm/CIF\ RX CIF RX: Off in 0 out 0 in "static" "CIF Receive" out "static" "DAP TX"
# cat tegra30-i2s.1/dapm/DAP\ TX DAP TX: Off in 0 out 0 in "static" "CIF RX" out "static" "DAP Transmit"
# cat tegra30-i2s.1/dapm/DAP\ Transmit DAP Transmit: Off in 0 out 0 stream DAP Transmit inactive in "static" "DAP TX"
Finally, there's a DAI link from the I2S controller's DAP DAI to the WM8903's DAI, which again shows up in the debugfs file:
# cat wm8903.4-001a/dapm/Playback Playback: Off in 0 out 8 stream Playback inactive in "static" "DAP Transmit-Playback" out "static" "AIFRXL" out "static" "AIFRXR" out "static" "AIFRXL" out "static" "AIFRXR"
For completeness, here's the route through the WM8903, although nothing in that codec has changed since before I started reworking the Tegra drivers:
# cd wm8903.4-001a/dapm/
# cat AIFRXL AIFRXL: Off in 0 out 2 stream Left Playback inactive in "static" "Playback" in "static" "Playback" out "Left" "Left Playback Mux"
# cat Left\ Playback\ Mux Left Playback Mux: Off in 0 out 2 in "Left" "AIFRXL" out "static" "DACL"
# cat DACL DACL: Off in 0 out 2 - R18(0x12) bit 3 in "static" "CLK_DSP" in "static" "DACL Sidetone" in "static" "Left Playback Mux" out "DACL Switch" "Left Speaker Mixer" out "DACL Switch" "Left Output Mixer"
# cat Left\ Speaker\ Mixer Left Speaker Mixer: Off in 0 out 2 - R16(0x10) bit 1 in "DACL Switch" "DACL" out "static" "Left Speaker PGA"
# cat Left\ Speaker\ PGA Left Speaker PGA: Off in 0 out 2 - R17(0x11) bit 1 in "static" "Left Speaker Mixer" out "static" "LON" out "static" "LOP"
# cat LON LON: Off in 0 out 1 in "static" "Left Speaker PGA" out "static" "Int Spk"
# amixer cget name='Int Spk Switch' numid=87,iface=MIXER,name='Int Spk Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on
(I do note that on IRC you said soc-pcm might be a better fit for this HW now, but since I figure I'm very close, I'd like to get this working and experiment with it a bit either way)
Thanks so much for the help.