Lines Matching +full:- +full:- +full:- +full:- +full:-
6 processing to a dedicated low power co-processor. This allows the core
27 ----------------- ----------------------
28 | USB HID | --> | ISH HID |
29 ----------------- ----------------------
30 ----------------- ----------------------
31 | USB protocol | --> | ISH Transport |
32 ----------------- ----------------------
33 ----------------- ----------------------
34 | EHCI/XHCI | --> | ISH IPC |
35 ----------------- ----------------------
37 ----------------- ----------------------
38 |Host controller| --> | ISH processor |
39 ----------------- ----------------------
41 ----------------- ----------------------
42 | USB End points| --> | ISH Clients |
43 ----------------- ----------------------
66 ---------------------------
68 ---------------------------
70 ----------------IIO ABI----------------
71 --------------------------
73 --------------------------
74 --------------------------
76 --------------------------
77 --------------------------
79 --------------------------
80 --------------------------
82 --------------------------
83 --------------------------
85 --------------------------
86 --------------------------
88 --------------------------
89 --------------------------
91 --------------------------
93 ---------------- PCI -----------------
95 ----------------------------
97 ----------------------------
103 ----------------------
105 The ISH is exposed as "Non-VGA unclassified PCI device" to the host. The PCI
111 ----------------------------------------------
113 Location: drivers/hid/intel-ish-hid/ipc
116 hw-ish-regs.h.
136 Each side has 32 32-bit message registers and a 32-bit doorbell. Doorbell
152 -----------------------
154 Location: drivers/hid/intel-ish-hid/ishtp/
159 The transport layer is a bi-directional protocol, which defines:
160 - Set of commands to start, stop, connect, disconnect and flow control
162 - A flow control mechanism to avoid buffer overflows
165 http://www.intel.com/content/dam/www/public/us/en/documents/technical-\
166 specifications/dcmi-hi-1-0-spec.pdf "Chapter 7: Bus Message Layer"
178 flow-control credit before. Once it sent a message, it may not send another one
205 it's request to do host->ISH DMA transfer; when FW sends DMA_XFER, it means
242 - Host sends HOST_START_REQ_CMD, indicating that host ISHTP layer is up.
243 - FW responds with HOST_START_RES_CMD
244 - Host sends HOST_ENUM_REQ_CMD (enumerate FW clients)
245 - FW responds with HOST_ENUM_RES_CMD that includes bitmap of available FW
247 - For each FW ID found in that bitmap host sends
249 - FW responds with HOST_CLIENT_PROPERTIES_RES_CMD. Properties include UUID,
251 - Once host received properties for that last discovered client, it considers
255 -----------------------
257 Location: drivers/hid/intel-ish-hid
261 - enumerate HID devices under FW ISH client
262 - Get Report descriptor
263 - Register with HID core as a LL driver
264 - Process Get/Set feature request
265 - Get input reports
268 ---------------------------------------------
272 Documentation/hid/hid-sensor.rst for HID sensor
273 Documentation/ABI/testing/sysfs-bus-iio for IIO ABIs to user space
276 ---------------------------------------------
280 HID-ISH-CLN ISHTP IPC HW
282 | | |-----WAKE UP------------------>|
284 | | |-----HOST READY--------------->|
286 | | |<----MNG_RESET_NOTIFY_ACK----- |
288 | |<----ISHTP_START------ | |
290 | |<-----------------HOST_START_RES_CMD-------------------|
292 | |------------------QUERY_SUBSCRIBER-------------------->|
294 | |------------------HOST_ENUM_REQ_CMD------------------->|
296 | |<-----------------HOST_ENUM_RES_CMD--------------------|
298 | |------------------HOST_CLIENT_PROPERTIES_REQ_CMD------>|
300 | |<-----------------HOST_CLIENT_PROPERTIES_RES_CMD-------|
303 | |------------------HOST_CLIENT_PROPERTIES_REQ_CMD------>|
305 | |<-----------------HOST_CLIENT_PROPERTIES_RES_CMD-------|
308 | |--Repeat HOST_CLIENT_PROPERTIES_REQ_CMD-till last one--|
311 |----ishtp_cl_connect--->|----------------- CLIENT_CONNECT_REQ_CMD-------------->|
313 | |<----------------CLIENT_CONNECT_RES_CMD----------------|
318 HOSTIF_DM_ENUM_DEVICES) |----------fill ishtp_msg_hdr struct write to HW----- >|
320 | | |<-----IRQ(IPC_PROTOCOL_ISHTP---|
322 |<--ENUM_DEVICE RSP------| | |
326 HOSTIF_GET_HID_DESCRIPTOR|----------fill ishtp_msg_hdr struct write to HW----- >|
332 HOSTIF_GET_REPORT_DESCRIPTOR|--------------fill ishtp_msg_hdr struct write to HW-- >|
342 -----------------
349 -----------------------------------------------------
353 root@otcpl-ThinkPad-Yoga-260:~# tree -l /sys/bus/iio/devices/
355 ├── iio:device0 -> ../../../devices/0044:8086:22D8.0001/HID-SENSOR-200073.9.auto/iio:device0