Hello,
Thanx for the work, just 2 cosmetic questions:
(just testing and comparing HDSP9552 /HDSP9632 and HDSP-MADI on
function, so I fall over these:)
I have a questions to the patch:
1)
+#define H9632_SS_CHANNELS 12
+#define H9632_DS_CHANNELS 8
+#define H9632_QS_CHANNELS 4
I always thought the HDSP96 can use 16 channels in Single speed
since you can use adat (8) + analog (2) + spdif (2) + optional 4 channels expansion
at the same time.
It is the case. You seem to have missed the comment just above those lines stating that extension boards were checked for at initialization time.
2) different IOextents on different cards
+#define HDSP_IO_EXTENT 7168
maybe its safer to use
io_extent= pci_resource_len(pci,0);
(in the hdsp_createfunction instead of giving a fix one.)
This covers only the specific part of the card's memory we need to map.
3) should we change the the hw_params so that only needed channels are enabled (and change the ruleset to it) ?
This is not essential for non-madi cards, but if this results in a performance enhancement, maybe we should backport your work to the non-madi driver. On the other hand how would you handle the capture side of this ? As you mentioned in an earlier post, during playback as few as one channel can be used and still, thanks to the matrix mixer, any physical output can send the signal. For recording this is a problem because capture channels are hardwired to physical inputs. How would you choose the recording channel ?
Thomas
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