net: wwan: iosm: Enable M.2 7360 WWAN card support

This patch enables Intel M.2 7360 WWAN card support on
IOSM Driver.

Control path implementation is a reuse whereas data path
implementation it uses a different protocol called as MUX
Aggregation. The major portion of this patch covers the MUX
Aggregation protocol implementation used for IP traffic
communication.

For M.2 7360 WWAN card, driver exposes 2 wwan AT ports for
control communication.  The user space application or the
modem manager to use wwan AT port for data path establishment.

During probe, driver reads the mux protocol device capability
register to know the mux protocol version supported by device.
Base on which the right mux protocol is initialized for data
path communication.

An overview of an Aggregation Protocol
1>  An IP packet is encapsulated with 16 octet padding header
    to form a Datagram & the start offset of the Datagram is
    indexed into Datagram Header (DH).
2>  Multiple such Datagrams are composed & the start offset of
    each DH is indexed into Datagram Table Header (DTH).
3>  The Datagram Table (DT) is IP session specific & table_length
    item in DTH holds the number of composed datagram pertaining
    to that particular IP session.
4>  And finally the offset of first DTH is indexed into DBH (Datagram
    Block Header).

So in TX/RX flow Datagram Block (Datagram Block Header + Payload)is
exchanged between driver & device.

Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/wwan/iosm/iosm_ipc_pcie.c b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
index d73894e2a84e..31f57b986df2 100644
--- a/drivers/net/wwan/iosm/iosm_ipc_pcie.c
+++ b/drivers/net/wwan/iosm/iosm_ipc_pcie.c
@@ -320,6 +320,7 @@ ret_fail:
 
 static const struct pci_device_id iosm_ipc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CP_DEVICE_7560_ID) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, INTEL_CP_DEVICE_7360_ID) },
 	{}
 };
 MODULE_DEVICE_TABLE(pci, iosm_ipc_ids);