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net: wwan: iosm: add rpc interface for xmm modems

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Add a new iosm wwan port that connects to the modem rpc interface. This
interface provides a configuration channel, and in the case of the 7360, is
the only way to configure the modem (as it does not support mbim).

The new interface is compatible with existing software, such as
open_xdatachannel.py from the xmm7360-pci project [1].

[1] https://github.com/xmm7360/xmm7360-pci

Signed-off-by: Shane Parslow <shaneparslow808@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shane Parslow 2022-10-29 02:03:56 -07:00 committed by David S. Miller
parent 3349e4a48a
commit d08b0f8f46
3 changed files with 7 additions and 1 deletions
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2
drivers/net/wwan/iosm/iosm_ipc_chnl_cfg.c
View file

@ -39,7 +39,7 @@ static struct ipc_chnl_cfg modem_cfg[] = {
/* RPC - 0 */
{ IPC_MEM_CTRL_CHL_ID_1, IPC_MEM_PIPE_2, IPC_MEM_PIPE_3,
IPC_MEM_MAX_TDS_RPC, IPC_MEM_MAX_TDS_RPC,
IPC_MEM_MAX_DL_RPC_BUF_SIZE, WWAN_PORT_UNKNOWN },
IPC_MEM_MAX_DL_RPC_BUF_SIZE, WWAN_PORT_XMMRPC },
/* IAT0 */
{ IPC_MEM_CTRL_CHL_ID_2, IPC_MEM_PIPE_4, IPC_MEM_PIPE_5,
IPC_MEM_MAX_TDS_AT, IPC_MEM_MAX_TDS_AT, IPC_MEM_MAX_DL_AT_BUF_SIZE,

4
drivers/net/wwan/wwan_core.c
View file

@ -319,6 +319,10 @@ static const struct {
.name = "FIREHOSE",
.devsuf = "firehose",
},
[WWAN_PORT_XMMRPC] = {
.name = "XMMRPC",
.devsuf = "xmmrpc",
},
};
static ssize_t type_show(struct device *dev, struct device_attribute *attr,

2
include/linux/wwan.h
View file

@ -15,6 +15,7 @@
* @WWAN_PORT_QMI: Qcom modem/MSM interface for modem control
* @WWAN_PORT_QCDM: Qcom Modem diagnostic interface
* @WWAN_PORT_FIREHOSE: XML based command protocol
* @WWAN_PORT_XMMRPC: Control protocol for Intel XMM modems
*
* @WWAN_PORT_MAX: Highest supported port types
* @WWAN_PORT_UNKNOWN: Special value to indicate an unknown port type
@ -26,6 +27,7 @@ enum wwan_port_type {
WWAN_PORT_QMI,
WWAN_PORT_QCDM,
WWAN_PORT_FIREHOSE,
WWAN_PORT_XMMRPC,
/* Add new port types above this line */