Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
new file mode 100644
index 0000000000..05074c4a65
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
@@ -0,0 +1,143 @@
+What:		/sys/bus/iio/devices/triggerX/master_mode_available
+KernelVersion:	4.11
+Contact:	benjamin.gaignard@st.com
+Description:
+		Reading returns the list possible master modes which are:
+
+
+		- "reset"
+				The UG bit from the TIMx_EGR register is
+				used as trigger output (TRGO).
+		- "enable"
+				The Counter Enable signal CNT_EN is used
+				as trigger output.
+		- "update"
+				The update event is selected as trigger output.
+				For instance a master timer can then be used
+				as a prescaler for a slave timer.
+		- "compare_pulse"
+				The trigger output send a positive pulse
+				when the CC1IF flag is to be set.
+		- "OC1REF"
+				OC1REF signal is used as trigger output.
+		- "OC2REF"
+				OC2REF signal is used as trigger output.
+		- "OC3REF"
+				OC3REF signal is used as trigger output.
+		- "OC4REF"
+				OC4REF signal is used as trigger output.
+
+		Additional modes (on TRGO2 only):
+
+		- "OC5REF"
+				OC5REF signal is used as trigger output.
+		- "OC6REF"
+				OC6REF signal is used as trigger output.
+		- "compare_pulse_OC4REF":
+				OC4REF rising or falling edges generate pulses.
+		- "compare_pulse_OC6REF":
+				OC6REF rising or falling edges generate pulses.
+		- "compare_pulse_OC4REF_r_or_OC6REF_r":
+				OC4REF or OC6REF rising edges generate pulses.
+		- "compare_pulse_OC4REF_r_or_OC6REF_f":
+				OC4REF rising or OC6REF falling edges generate
+				pulses.
+		- "compare_pulse_OC5REF_r_or_OC6REF_r":
+				OC5REF or OC6REF rising edges generate pulses.
+		- "compare_pulse_OC5REF_r_or_OC6REF_f":
+				OC5REF rising or OC6REF falling edges generate
+				pulses.
+
+		::
+
+		  +-----------+   +-------------+            +---------+
+		  | Prescaler +-> | Counter     |        +-> | Master  | TRGO(2)
+		  +-----------+   +--+--------+-+        |-> | Control +-->
+		                     |        |          ||  +---------+
+		                  +--v--------+-+ OCxREF ||  +---------+
+		                  | Chx compare +----------> | Output  | ChX
+		                  +-----------+-+         |  | Control +-->
+		                        .     |           |  +---------+
+		                        .     |           |    .
+		                  +-----------v-+ OC6REF  |    .
+		                  | Ch6 compare +---------+>
+		                  +-------------+
+
+		Example with: "compare_pulse_OC4REF_r_or_OC6REF_r"::
+
+		                  X
+		                X   X
+		              X .   . X
+		            X   .   .   X
+		          X     .   .     X
+		  count X .     .   .     . X
+		          .     .   .     .
+		          .     .   .     .
+		          +---------------+
+		  OC4REF  |     .   .     |
+		        +-+     .   .     +-+
+		          .     +---+     .
+		  OC6REF  .     |   |     .
+		        +-------+   +-------+
+		          +-+   +-+
+		  TRGO2   | |   | |
+		        +-+ +---+ +---------+
+
+What:		/sys/bus/iio/devices/triggerX/master_mode
+KernelVersion:	4.11
+Contact:	benjamin.gaignard@st.com
+Description:
+		Reading returns the current master modes.
+		Writing set the master mode
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_count0_preset
+KernelVersion:	4.12
+Contact:	benjamin.gaignard@st.com
+Description:
+		Reading returns the current preset value.
+		Writing sets the preset value.
+		When counting up the counter starts from 0 and fires an
+		event when reach preset value.
+		When counting down the counter start from preset value
+		and fire event when reach 0.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_count_enable_mode_available
+KernelVersion:	4.12
+Contact:	benjamin.gaignard@st.com
+Description:
+		Reading returns the list possible enable modes.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_count0_enable_mode
+KernelVersion:	4.12
+Contact:	benjamin.gaignard@st.com
+Description:
+		Configure the device counter enable modes, in all case
+		counting direction is set by in_count0_count_direction
+		attribute and the counter is clocked by the internal clock.
+
+		always:
+			Counter is always ON.
+
+		gated:
+			Counting is enabled when connected trigger signal
+			level is high else counting is disabled.
+
+		triggered:
+			Counting is enabled on rising edge of the connected
+			trigger, and remains enabled for the duration of this
+			selected mode.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_count_trigger_mode_available
+KernelVersion:	4.13
+Contact:	benjamin.gaignard@st.com
+Description:
+		Reading returns the list possible trigger modes.
+
+What:		/sys/bus/iio/devices/iio:deviceX/in_count0_trigger_mode
+KernelVersion:	4.13
+Contact:	benjamin.gaignard@st.com
+Description:
+		Configure the device counter trigger mode
+		counting direction is set by in_count0_count_direction
+		attribute and the counter is clocked by the connected trigger
+		rising edges.