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Intel MID platforms. It is used for sending/receiving I2S audio samples
It support new DMA interface of kernel 2.6.37
Below is a simple diagram that explain where is the intel_mid_i2s in software
architecture:
+-----------+
| |
|Pulse Audio|
| |
| |
+-----------+
|
|
+------------+------------+
| |
| |
| |
+-----------+ +-----------+
| | |Lib cmt |
|Alsa Lib |------+ |speech |------+
| | | |data | |
| | | | | |
+-----------+ | +-----------+ |
| | |
| | | User
......|............|.........................|.................................
| | | Kernel
| | |
| | |
| | |
| | |
| | |
| | |
\|/ \|/ \|/
V V V
+---------+ ++---------++ ++---------++
| | ||Alsa snd || ||cmt ||
|Intel SST| ||driver || ||speech ||
| "MAD" | ||SSP || ||driver ||
| | ||BT/FM || || ||
+---------+ ++---------++ ++---------++
| | |
| | |
| | |
| | |
\|/ | \|/
V | V
+-----------+ | ++---------++
| | | \ ||intel mid||
|LPE Driver | +------------------>||i2s ||
| | / ||unified ||
| | ||driver ||
+-----------+ ++---------++
| |
| | Kernel
......|......................................|.................................
| | Hardware
\|/ \|/
V V
+-- --+ +-- --+
| | | |
|MSIC | |SSP in I2S |
| | |config |
| | | |
+-- --+ +-- --+
Signed-off-by: Louis LE GALL <louis.le.gall@intel.com>
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